mirror of
https://github.com/niklasvh/html2canvas.git
synced 2023-08-10 21:13:10 +03:00
17702 lines
506 KiB
JavaScript
17702 lines
506 KiB
JavaScript
/*
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html2canvas 0.5.0-alpha <http://html2canvas.hertzen.com>
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Copyright (c) 2015 Niklas von Hertzen
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Released under MIT License
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*/
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(function(window, document, exports, undefined){
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/* build: `node build.js modules=text,serialization,parser,gradient,pattern,shadow,freedrawing,image_filters,serialization no-es5-compat minifier=uglifyjs` */
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/*! Fabric.js Copyright 2008-2014, Printio (Juriy Zaytsev, Maxim Chernyak) */
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var fabric = fabric || { version: "1.4.11" };
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if (typeof exports !== 'undefined') {
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exports.fabric = fabric;
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}
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if (typeof document !== 'undefined' && typeof window !== 'undefined') {
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fabric.document = document;
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fabric.window = window;
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}
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else {
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// assume we're running under node.js when document/window are not present
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fabric.document = require("jsdom")
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.jsdom("<!DOCTYPE html><html><head></head><body></body></html>");
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fabric.window = fabric.document.createWindow();
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}
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/**
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* True when in environment that supports touch events
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* @type boolean
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*/
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fabric.isTouchSupported = "ontouchstart" in fabric.document.documentElement;
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/**
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* True when in environment that's probably Node.js
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* @type boolean
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*/
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fabric.isLikelyNode = typeof Buffer !== 'undefined' &&
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typeof window === 'undefined';
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/**
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* Attributes parsed from all SVG elements
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* @type array
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*/
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fabric.SHARED_ATTRIBUTES = [
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"display",
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"transform",
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"fill", "fill-opacity", "fill-rule",
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"opacity",
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"stroke", "stroke-dasharray", "stroke-linecap",
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"stroke-linejoin", "stroke-miterlimit",
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"stroke-opacity", "stroke-width"
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];
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/**
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* Pixel per Inch as a default value set to 96. Can be changed for more realistic conversion.
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*/
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fabric.DPI = 96;
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/*!
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* Copyright (c) 2009 Simo Kinnunen.
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* Licensed under the MIT license.
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*/
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var Cufon = (function() {
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/** @ignore */
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var api = function() {
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return api.replace.apply(null, arguments);
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};
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/** @ignore */
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var DOM = api.DOM = {
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ready: (function() {
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var complete = false, readyStatus = { loaded: 1, complete: 1 };
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var queue = [], /** @ignore */ perform = function() {
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if (complete) return;
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complete = true;
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for (var fn; fn = queue.shift(); fn());
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};
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// Gecko, Opera, WebKit r26101+
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if (fabric.document.addEventListener) {
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fabric.document.addEventListener('DOMContentLoaded', perform, false);
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fabric.window.addEventListener('pageshow', perform, false); // For cached Gecko pages
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}
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// Old WebKit, Internet Explorer
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if (!fabric.window.opera && fabric.document.readyState) (function() {
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readyStatus[fabric.document.readyState] ? perform() : setTimeout(arguments.callee, 10);
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})();
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// Internet Explorer
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if (fabric.document.readyState && fabric.document.createStyleSheet) (function() {
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try {
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fabric.document.body.doScroll('left');
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perform();
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}
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catch (e) {
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setTimeout(arguments.callee, 1);
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}
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})();
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addEvent(fabric.window, 'load', perform); // Fallback
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return function(listener) {
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if (!arguments.length) perform();
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else complete ? listener() : queue.push(listener);
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};
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})()
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};
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/** @ignore */
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var CSS = api.CSS = /** @ignore */ {
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/** @ignore */
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Size: function(value, base) {
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this.value = parseFloat(value);
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this.unit = String(value).match(/[a-z%]*$/)[0] || 'px';
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/** @ignore */
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this.convert = function(value) {
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return value / base * this.value;
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};
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/** @ignore */
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this.convertFrom = function(value) {
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return value / this.value * base;
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};
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/** @ignore */
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this.toString = function() {
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return this.value + this.unit;
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};
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},
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/** @ignore */
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getStyle: function(el) {
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return new Style(el.style);
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/*
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var view = document.defaultView;
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if (view && view.getComputedStyle) return new Style(view.getComputedStyle(el, null));
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if (el.currentStyle) return new Style(el.currentStyle);
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return new Style(el.style);
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*/
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},
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quotedList: cached(function(value) {
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// doesn't work properly with empty quoted strings (""), but
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// it's not worth the extra code.
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var list = [], re = /\s*((["'])([\s\S]*?[^\\])\2|[^,]+)\s*/g, match;
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while (match = re.exec(value)) list.push(match[3] || match[1]);
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return list;
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}),
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ready: (function() {
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var complete = false;
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var queue = [], perform = function() {
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complete = true;
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for (var fn; fn = queue.shift(); fn());
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};
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// Safari 2 does not include <style> elements in document.styleSheets.
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// Safari 2 also does not support Object.prototype.propertyIsEnumerable.
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var styleElements = Object.prototype.propertyIsEnumerable ? elementsByTagName('style') : { length: 0 };
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var linkElements = elementsByTagName('link');
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DOM.ready(function() {
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// These checks are actually only needed for WebKit-based browsers, but don't really hurt other browsers.
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var linkStyles = 0, link;
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for (var i = 0, l = linkElements.length; link = linkElements[i], i < l; ++i) {
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// WebKit does not load alternate stylesheets.
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if (!link.disabled && link.rel.toLowerCase() == 'stylesheet') ++linkStyles;
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}
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if (fabric.document.styleSheets.length >= styleElements.length + linkStyles) perform();
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else setTimeout(arguments.callee, 10);
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});
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return function(listener) {
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if (complete) listener();
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else queue.push(listener);
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};
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})(),
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/** @ignore */
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supports: function(property, value) {
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var checker = fabric.document.createElement('span').style;
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if (checker[property] === undefined) return false;
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checker[property] = value;
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return checker[property] === value;
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},
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/** @ignore */
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textAlign: function(word, style, position, wordCount) {
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if (style.get('textAlign') == 'right') {
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if (position > 0) word = ' ' + word;
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}
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else if (position < wordCount - 1) word += ' ';
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return word;
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},
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/** @ignore */
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textDecoration: function(el, style) {
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if (!style) style = this.getStyle(el);
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var types = {
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underline: null,
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overline: null,
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'line-through': null
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};
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for (var search = el; search.parentNode && search.parentNode.nodeType == 1; ) {
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var foundAll = true;
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for (var type in types) {
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if (types[type]) continue;
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if (style.get('textDecoration').indexOf(type) != -1) types[type] = style.get('color');
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foundAll = false;
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}
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if (foundAll) break; // this is rather unlikely to happen
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style = this.getStyle(search = search.parentNode);
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}
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return types;
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},
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textShadow: cached(function(value) {
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if (value == 'none') return null;
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var shadows = [], currentShadow = {}, result, offCount = 0;
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var re = /(#[a-f0-9]+|[a-z]+\(.*?\)|[a-z]+)|(-?[\d.]+[a-z%]*)|,/ig;
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while (result = re.exec(value)) {
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if (result[0] == ',') {
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shadows.push(currentShadow);
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currentShadow = {}, offCount = 0;
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}
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else if (result[1]) {
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currentShadow.color = result[1];
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}
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else {
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currentShadow[[ 'offX', 'offY', 'blur' ][offCount++]] = result[2];
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}
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}
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shadows.push(currentShadow);
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return shadows;
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}),
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color: cached(function(value) {
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var parsed = {};
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parsed.color = value.replace(/^rgba\((.*?),\s*([\d.]+)\)/, function($0, $1, $2) {
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parsed.opacity = parseFloat($2);
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return 'rgb(' + $1 + ')';
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});
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return parsed;
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}),
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/** @ignore */
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textTransform: function(text, style) {
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return text[{
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uppercase: 'toUpperCase',
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lowercase: 'toLowerCase'
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}[style.get('textTransform')] || 'toString']();
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}
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};
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function Font(data) {
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var face = this.face = data.face;
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this.glyphs = data.glyphs;
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this.w = data.w;
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this.baseSize = parseInt(face['units-per-em'], 10);
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this.family = face['font-family'].toLowerCase();
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this.weight = face['font-weight'];
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this.style = face['font-style'] || 'normal';
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this.viewBox = (function () {
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var parts = face.bbox.split(/\s+/);
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var box = {
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minX: parseInt(parts[0], 10),
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minY: parseInt(parts[1], 10),
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maxX: parseInt(parts[2], 10),
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maxY: parseInt(parts[3], 10)
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};
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box.width = box.maxX - box.minX,
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box.height = box.maxY - box.minY;
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/** @ignore */
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box.toString = function() {
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return [ this.minX, this.minY, this.width, this.height ].join(' ');
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};
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return box;
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})();
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this.ascent = -parseInt(face.ascent, 10);
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this.descent = -parseInt(face.descent, 10);
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this.height = -this.ascent + this.descent;
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}
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function FontFamily() {
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var styles = {}, mapping = {
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oblique: 'italic',
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italic: 'oblique'
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};
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this.add = function(font) {
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(styles[font.style] || (styles[font.style] = {}))[font.weight] = font;
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};
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/** @ignore */
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this.get = function(style, weight) {
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var weights = styles[style] || styles[mapping[style]]
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|| styles.normal || styles.italic || styles.oblique;
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if (!weights) return null;
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// we don't have to worry about "bolder" and "lighter"
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// because IE's currentStyle returns a numeric value for it,
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// and other browsers use the computed value anyway
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weight = {
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normal: 400,
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bold: 700
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}[weight] || parseInt(weight, 10);
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if (weights[weight]) return weights[weight];
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// http://www.w3.org/TR/CSS21/fonts.html#propdef-font-weight
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// Gecko uses x99/x01 for lighter/bolder
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var up = {
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1: 1,
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99: 0
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}[weight % 100], alts = [], min, max;
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if (up === undefined) up = weight > 400;
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if (weight == 500) weight = 400;
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for (var alt in weights) {
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alt = parseInt(alt, 10);
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if (!min || alt < min) min = alt;
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if (!max || alt > max) max = alt;
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alts.push(alt);
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}
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if (weight < min) weight = min;
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if (weight > max) weight = max;
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alts.sort(function(a, b) {
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return (up
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? (a > weight && b > weight) ? a < b : a > b
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: (a < weight && b < weight) ? a > b : a < b) ? -1 : 1;
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});
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return weights[alts[0]];
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};
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}
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function HoverHandler() {
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function contains(node, anotherNode) {
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if (node.contains) return node.contains(anotherNode);
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return node.compareDocumentPosition(anotherNode) & 16;
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}
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function onOverOut(e) {
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var related = e.relatedTarget;
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if (!related || contains(this, related)) return;
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trigger(this);
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}
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function onEnterLeave(e) {
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trigger(this);
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}
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function trigger(el) {
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// A timeout is needed so that the event can actually "happen"
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// before replace is triggered. This ensures that styles are up
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// to date.
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setTimeout(function() {
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api.replace(el, sharedStorage.get(el).options, true);
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}, 10);
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}
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this.attach = function(el) {
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if (el.onmouseenter === undefined) {
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addEvent(el, 'mouseover', onOverOut);
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addEvent(el, 'mouseout', onOverOut);
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}
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else {
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addEvent(el, 'mouseenter', onEnterLeave);
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addEvent(el, 'mouseleave', onEnterLeave);
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}
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};
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}
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function Storage() {
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var map = {}, at = 0;
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function identify(el) {
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return el.cufid || (el.cufid = ++at);
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}
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/** @ignore */
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this.get = function(el) {
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var id = identify(el);
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return map[id] || (map[id] = {});
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};
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}
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function Style(style) {
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var custom = {}, sizes = {};
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this.get = function(property) {
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return custom[property] != undefined ? custom[property] : style[property];
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};
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this.getSize = function(property, base) {
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return sizes[property] || (sizes[property] = new CSS.Size(this.get(property), base));
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};
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this.extend = function(styles) {
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for (var property in styles) custom[property] = styles[property];
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return this;
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};
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}
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function addEvent(el, type, listener) {
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if (el.addEventListener) {
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el.addEventListener(type, listener, false);
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}
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else if (el.attachEvent) {
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el.attachEvent('on' + type, function() {
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return listener.call(el, fabric.window.event);
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});
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}
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}
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function attach(el, options) {
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var storage = sharedStorage.get(el);
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if (storage.options) return el;
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if (options.hover && options.hoverables[el.nodeName.toLowerCase()]) {
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hoverHandler.attach(el);
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}
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storage.options = options;
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return el;
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}
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function cached(fun) {
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var cache = {};
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return function(key) {
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if (!cache.hasOwnProperty(key)) cache[key] = fun.apply(null, arguments);
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return cache[key];
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};
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}
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function getFont(el, style) {
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if (!style) style = CSS.getStyle(el);
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var families = CSS.quotedList(style.get('fontFamily').toLowerCase()), family;
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for (var i = 0, l = families.length; i < l; ++i) {
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family = families[i];
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if (fonts[family]) return fonts[family].get(style.get('fontStyle'), style.get('fontWeight'));
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}
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return null;
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}
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function elementsByTagName(query) {
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return fabric.document.getElementsByTagName(query);
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}
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function merge() {
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var merged = {}, key;
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for (var i = 0, l = arguments.length; i < l; ++i) {
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for (key in arguments[i]) merged[key] = arguments[i][key];
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}
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return merged;
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}
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function process(font, text, style, options, node, el) {
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var separate = options.separate;
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if (separate == 'none') return engines[options.engine].apply(null, arguments);
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var fragment = fabric.document.createDocumentFragment(), processed;
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var parts = text.split(separators[separate]), needsAligning = (separate == 'words');
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if (needsAligning && HAS_BROKEN_REGEXP) {
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// @todo figure out a better way to do this
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if (/^\s/.test(text)) parts.unshift('');
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if (/\s$/.test(text)) parts.push('');
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}
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for (var i = 0, l = parts.length; i < l; ++i) {
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processed = engines[options.engine](font,
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needsAligning ? CSS.textAlign(parts[i], style, i, l) : parts[i],
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style, options, node, el, i < l - 1);
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if (processed) fragment.appendChild(processed);
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}
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return fragment;
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}
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/** @ignore */
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function replaceElement(el, options) {
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var font, style, nextNode, redraw;
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for (var node = attach(el, options).firstChild; node; node = nextNode) {
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nextNode = node.nextSibling;
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redraw = false;
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if (node.nodeType == 1) {
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if (!node.firstChild) continue;
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if (!/cufon/.test(node.className)) {
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arguments.callee(node, options);
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continue;
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}
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else redraw = true;
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}
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if (!style) style = CSS.getStyle(el).extend(options);
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if (!font) font = getFont(el, style);
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if (!font) continue;
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if (redraw) {
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engines[options.engine](font, null, style, options, node, el);
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continue;
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}
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var text = node.data;
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//for some reason, the carriage return is not stripped by IE but "\n" is, so let's keep \r as a new line marker...
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if (typeof G_vmlCanvasManager != 'undefined') {
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text = text.replace(/\r/g, "\n");
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}
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if (text === '') continue;
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var processed = process(font, text, style, options, node, el);
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if (processed) node.parentNode.replaceChild(processed, node);
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else node.parentNode.removeChild(node);
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}
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}
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var HAS_BROKEN_REGEXP = ' '.split(/\s+/).length == 0;
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|
|
var sharedStorage = new Storage();
|
|
var hoverHandler = new HoverHandler();
|
|
var replaceHistory = [];
|
|
|
|
var engines = {}, fonts = {}, defaultOptions = {
|
|
engine: null,
|
|
//fontScale: 1,
|
|
//fontScaling: false,
|
|
hover: false,
|
|
hoverables: {
|
|
a: true
|
|
},
|
|
printable: true,
|
|
//rotation: 0,
|
|
//selectable: false,
|
|
selector: (
|
|
fabric.window.Sizzle
|
|
|| (fabric.window.jQuery && function(query) { return jQuery(query); }) // avoid noConflict issues
|
|
|| (fabric.window.dojo && dojo.query)
|
|
|| (fabric.window.$$ && function(query) { return $$(query); })
|
|
|| (fabric.window.$ && function(query) { return $(query); })
|
|
|| (fabric.document.querySelectorAll && function(query) { return fabric.document.querySelectorAll(query); })
|
|
|| elementsByTagName
|
|
),
|
|
separate: 'words', // 'none' and 'characters' are also accepted
|
|
textShadow: 'none'
|
|
};
|
|
|
|
var separators = {
|
|
words: /\s+/,
|
|
characters: ''
|
|
};
|
|
|
|
/** @ignore */
|
|
api.now = function() {
|
|
DOM.ready();
|
|
return api;
|
|
};
|
|
|
|
/** @ignore */
|
|
api.refresh = function() {
|
|
var currentHistory = replaceHistory.splice(0, replaceHistory.length);
|
|
for (var i = 0, l = currentHistory.length; i < l; ++i) {
|
|
api.replace.apply(null, currentHistory[i]);
|
|
}
|
|
return api;
|
|
};
|
|
|
|
/** @ignore */
|
|
api.registerEngine = function(id, engine) {
|
|
if (!engine) return api;
|
|
engines[id] = engine;
|
|
return api.set('engine', id);
|
|
};
|
|
|
|
/** @ignore */
|
|
api.registerFont = function(data) {
|
|
var font = new Font(data), family = font.family;
|
|
if (!fonts[family]) fonts[family] = new FontFamily();
|
|
fonts[family].add(font);
|
|
return api.set('fontFamily', '"' + family + '"');
|
|
};
|
|
|
|
/** @ignore */
|
|
api.replace = function(elements, options, ignoreHistory) {
|
|
options = merge(defaultOptions, options);
|
|
if (!options.engine) return api; // there's no browser support so we'll just stop here
|
|
if (typeof options.textShadow == 'string' && options.textShadow)
|
|
options.textShadow = CSS.textShadow(options.textShadow);
|
|
if (!ignoreHistory) replaceHistory.push(arguments);
|
|
if (elements.nodeType || typeof elements == 'string') elements = [ elements ];
|
|
CSS.ready(function() {
|
|
for (var i = 0, l = elements.length; i < l; ++i) {
|
|
var el = elements[i];
|
|
if (typeof el == 'string') api.replace(options.selector(el), options, true);
|
|
else replaceElement(el, options);
|
|
}
|
|
});
|
|
return api;
|
|
};
|
|
|
|
/** @ignore */
|
|
api.replaceElement = function(el, options) {
|
|
options = merge(defaultOptions, options);
|
|
if (typeof options.textShadow == 'string' && options.textShadow)
|
|
options.textShadow = CSS.textShadow(options.textShadow);
|
|
return replaceElement(el, options);
|
|
};
|
|
|
|
api.engines = engines;
|
|
api.fonts = fonts;
|
|
/** @ignore */
|
|
api.getOptions = function() {
|
|
return merge(defaultOptions);
|
|
};
|
|
|
|
/** @ignore */
|
|
api.set = function(option, value) {
|
|
defaultOptions[option] = value;
|
|
return api;
|
|
};
|
|
|
|
return api;
|
|
|
|
})();
|
|
|
|
Cufon.registerEngine('canvas', (function() {
|
|
|
|
// Safari 2 doesn't support .apply() on native methods
|
|
var HAS_INLINE_BLOCK = Cufon.CSS.supports('display', 'inline-block');
|
|
|
|
// Firefox 2 w/ non-strict doctype (almost standards mode)
|
|
var HAS_BROKEN_LINEHEIGHT = !HAS_INLINE_BLOCK && (fabric.document.compatMode == 'BackCompat' || /frameset|transitional/i.test(fabric.document.doctype.publicId));
|
|
|
|
var styleSheet = fabric.document.createElement('style');
|
|
styleSheet.type = 'text/css';
|
|
|
|
var textNode = fabric.document.createTextNode(
|
|
'.cufon-canvas{text-indent:0}' +
|
|
'@media screen,projection{' +
|
|
'.cufon-canvas{display:inline;display:inline-block;position:relative;vertical-align:middle' +
|
|
(HAS_BROKEN_LINEHEIGHT
|
|
? ''
|
|
: ';font-size:1px;line-height:1px') +
|
|
'}.cufon-canvas .cufon-alt{display:-moz-inline-box;display:inline-block;width:0;height:0;overflow:hidden}' +
|
|
(HAS_INLINE_BLOCK
|
|
? '.cufon-canvas canvas{position:relative}'
|
|
: '.cufon-canvas canvas{position:absolute}') +
|
|
'}' +
|
|
'@media print{' +
|
|
'.cufon-canvas{padding:0 !important}' +
|
|
'.cufon-canvas canvas{display:none}' +
|
|
'.cufon-canvas .cufon-alt{display:inline}' +
|
|
'}'
|
|
)
|
|
|
|
try {
|
|
styleSheet.appendChild(textNode);
|
|
} catch(e) {
|
|
//IE8- can't do this...
|
|
styleSheet.setAttribute("type", "text/css");
|
|
styleSheet.styleSheet.cssText = textNode.data;
|
|
}
|
|
fabric.document.getElementsByTagName('head')[0].appendChild(styleSheet);
|
|
|
|
function generateFromVML(path, context) {
|
|
var atX = 0, atY = 0;
|
|
var code = [], re = /([mrvxe])([^a-z]*)/g, match;
|
|
generate: for (var i = 0; match = re.exec(path); ++i) {
|
|
var c = match[2].split(',');
|
|
switch (match[1]) {
|
|
case 'v':
|
|
code[i] = { m: 'bezierCurveTo', a: [ atX + ~~c[0], atY + ~~c[1], atX + ~~c[2], atY + ~~c[3], atX += ~~c[4], atY += ~~c[5] ] };
|
|
break;
|
|
case 'r':
|
|
code[i] = { m: 'lineTo', a: [ atX += ~~c[0], atY += ~~c[1] ] };
|
|
break;
|
|
case 'm':
|
|
code[i] = { m: 'moveTo', a: [ atX = ~~c[0], atY = ~~c[1] ] };
|
|
break;
|
|
case 'x':
|
|
code[i] = { m: 'closePath', a: [] };
|
|
break;
|
|
case 'e':
|
|
break generate;
|
|
}
|
|
context[code[i].m].apply(context, code[i].a);
|
|
}
|
|
return code;
|
|
}
|
|
|
|
function interpret(code, context) {
|
|
for (var i = 0, l = code.length; i < l; ++i) {
|
|
var line = code[i];
|
|
context[line.m].apply(context, line.a);
|
|
}
|
|
}
|
|
|
|
return function(font, text, style, options, node, el) {
|
|
|
|
var redraw = (text === null);
|
|
|
|
var viewBox = font.viewBox;
|
|
|
|
var size = style.getSize('fontSize', font.baseSize);
|
|
|
|
var letterSpacing = style.get('letterSpacing');
|
|
letterSpacing = (letterSpacing == 'normal') ? 0 : size.convertFrom(parseInt(letterSpacing, 10));
|
|
|
|
var expandTop = 0, expandRight = 0, expandBottom = 0, expandLeft = 0;
|
|
var shadows = options.textShadow, shadowOffsets = [];
|
|
|
|
Cufon.textOptions.shadowOffsets = [ ];
|
|
Cufon.textOptions.shadows = null;
|
|
|
|
if (shadows) {
|
|
Cufon.textOptions.shadows = shadows;
|
|
for (var i = 0, l = shadows.length; i < l; ++i) {
|
|
var shadow = shadows[i];
|
|
var x = size.convertFrom(parseFloat(shadow.offX));
|
|
var y = size.convertFrom(parseFloat(shadow.offY));
|
|
shadowOffsets[i] = [ x, y ];
|
|
//if (y < expandTop) expandTop = y;
|
|
//if (x > expandRight) expandRight = x;
|
|
//if (y > expandBottom) expandBottom = y;
|
|
//if (x < expandLeft) expandLeft = x;
|
|
}
|
|
}
|
|
|
|
var chars = Cufon.CSS.textTransform(redraw ? node.alt : text, style).split('');
|
|
|
|
var width = 0, lastWidth = null;
|
|
|
|
var maxWidth = 0, lines = 1, lineWidths = [ ];
|
|
for (var i = 0, l = chars.length; i < l; ++i) {
|
|
if (chars[i] === '\n') {
|
|
lines++;
|
|
if (width > maxWidth) {
|
|
maxWidth = width;
|
|
}
|
|
lineWidths.push(width);
|
|
width = 0;
|
|
continue;
|
|
}
|
|
var glyph = font.glyphs[chars[i]] || font.missingGlyph;
|
|
if (!glyph) continue;
|
|
width += lastWidth = Number(glyph.w || font.w) + letterSpacing;
|
|
}
|
|
lineWidths.push(width);
|
|
|
|
width = Math.max(maxWidth, width);
|
|
|
|
var lineOffsets = [ ];
|
|
for (var i = lineWidths.length; i--; ) {
|
|
lineOffsets[i] = width - lineWidths[i];
|
|
}
|
|
|
|
if (lastWidth === null) return null; // there's nothing to render
|
|
|
|
expandRight += (viewBox.width - lastWidth);
|
|
expandLeft += viewBox.minX;
|
|
|
|
var wrapper, canvas;
|
|
|
|
if (redraw) {
|
|
wrapper = node;
|
|
canvas = node.firstChild;
|
|
}
|
|
else {
|
|
wrapper = fabric.document.createElement('span');
|
|
wrapper.className = 'cufon cufon-canvas';
|
|
wrapper.alt = text;
|
|
|
|
canvas = fabric.document.createElement('canvas');
|
|
wrapper.appendChild(canvas);
|
|
|
|
if (options.printable) {
|
|
var print = fabric.document.createElement('span');
|
|
print.className = 'cufon-alt';
|
|
print.appendChild(fabric.document.createTextNode(text));
|
|
wrapper.appendChild(print);
|
|
}
|
|
}
|
|
|
|
var wStyle = wrapper.style;
|
|
var cStyle = canvas.style || { };
|
|
|
|
var height = size.convert(viewBox.height - expandTop + expandBottom);
|
|
var roundedHeight = Math.ceil(height);
|
|
var roundingFactor = roundedHeight / height;
|
|
|
|
canvas.width = Math.ceil(size.convert(width + expandRight - expandLeft) * roundingFactor);
|
|
canvas.height = roundedHeight;
|
|
|
|
expandTop += viewBox.minY;
|
|
|
|
cStyle.top = Math.round(size.convert(expandTop - font.ascent)) + 'px';
|
|
cStyle.left = Math.round(size.convert(expandLeft)) + 'px';
|
|
|
|
var _width = Math.ceil(size.convert(width * roundingFactor));
|
|
var wrapperWidth = _width + 'px';
|
|
var _height = size.convert(font.height);
|
|
var totalLineHeight = (options.lineHeight - 1) * size.convert(-font.ascent / 5) * (lines - 1);
|
|
|
|
Cufon.textOptions.width = _width;
|
|
Cufon.textOptions.height = (_height * lines) + totalLineHeight;
|
|
Cufon.textOptions.lines = lines;
|
|
Cufon.textOptions.totalLineHeight = totalLineHeight;
|
|
|
|
if (HAS_INLINE_BLOCK) {
|
|
wStyle.width = wrapperWidth;
|
|
wStyle.height = _height + 'px';
|
|
}
|
|
else {
|
|
wStyle.paddingLeft = wrapperWidth;
|
|
wStyle.paddingBottom = (_height - 1) + 'px';
|
|
}
|
|
|
|
var g = Cufon.textOptions.context || canvas.getContext('2d'),
|
|
scale = roundedHeight / viewBox.height;
|
|
|
|
Cufon.textOptions.fontAscent = font.ascent * scale;
|
|
Cufon.textOptions.boundaries = null;
|
|
|
|
for (var offsets = Cufon.textOptions.shadowOffsets, i = shadowOffsets.length; i--; ) {
|
|
offsets[i] = [ shadowOffsets[i][0] * scale, shadowOffsets[i][1] * scale ];
|
|
}
|
|
|
|
g.save();
|
|
g.scale(scale, scale);
|
|
|
|
g.translate(
|
|
// we're at the center of an object and need to jump to the top left corner
|
|
// where first character is to be drawn
|
|
-expandLeft - ((1/scale * canvas.width) / 2) + (Cufon.fonts[font.family].offsetLeft || 0),
|
|
-expandTop - ((Cufon.textOptions.height / scale) / 2) + (Cufon.fonts[font.family].offsetTop || 0)
|
|
);
|
|
|
|
g.lineWidth = font.face['underline-thickness'];
|
|
|
|
g.save();
|
|
|
|
function line(y, color) {
|
|
g.strokeStyle = color;
|
|
|
|
g.beginPath();
|
|
|
|
g.moveTo(0, y);
|
|
g.lineTo(width, y);
|
|
|
|
g.stroke();
|
|
}
|
|
|
|
var textDecoration = Cufon.getTextDecoration(options),
|
|
isItalic = options.fontStyle === 'italic';
|
|
|
|
function renderBackground() {
|
|
g.save();
|
|
|
|
var left = 0, lineNum = 0, boundaries = [{ left: 0 }];
|
|
|
|
if (options.backgroundColor) {
|
|
g.save();
|
|
g.fillStyle = options.backgroundColor;
|
|
g.translate(0, font.ascent);
|
|
g.fillRect(0, 0, width + 10, (-font.ascent + font.descent) * lines);
|
|
g.restore();
|
|
}
|
|
|
|
if (options.textAlign === 'right') {
|
|
g.translate(lineOffsets[lineNum], 0);
|
|
boundaries[0].left = lineOffsets[lineNum] * scale;
|
|
}
|
|
else if (options.textAlign === 'center') {
|
|
g.translate(lineOffsets[lineNum] / 2, 0);
|
|
boundaries[0].left = lineOffsets[lineNum] / 2 * scale;
|
|
}
|
|
|
|
for (var i = 0, l = chars.length; i < l; ++i) {
|
|
if (chars[i] === '\n') {
|
|
|
|
lineNum++;
|
|
|
|
var topOffset = -font.ascent - ((font.ascent / 5) * options.lineHeight);
|
|
var boundary = boundaries[boundaries.length - 1];
|
|
var nextBoundary = { left: 0 };
|
|
|
|
boundary.width = left * scale;
|
|
boundary.height = (-font.ascent + font.descent) * scale;
|
|
|
|
if (options.textAlign === 'right') {
|
|
g.translate(-width, topOffset);
|
|
g.translate(lineOffsets[lineNum], 0);
|
|
nextBoundary.left = lineOffsets[lineNum] * scale;
|
|
}
|
|
else if (options.textAlign === 'center') {
|
|
// offset to the start of text in previous line AND half of its offset
|
|
// (essentially moving caret to the left edge of bounding box)
|
|
g.translate(-left - (lineOffsets[lineNum - 1] / 2), topOffset);
|
|
g.translate(lineOffsets[lineNum] / 2, 0);
|
|
nextBoundary.left = lineOffsets[lineNum] / 2 * scale;
|
|
}
|
|
else {
|
|
g.translate(-left, topOffset);
|
|
}
|
|
|
|
/* push next boundary (for the next line) */
|
|
boundaries.push(nextBoundary);
|
|
|
|
left = 0;
|
|
|
|
continue;
|
|
}
|
|
var glyph = font.glyphs[chars[i]] || font.missingGlyph;
|
|
if (!glyph) continue;
|
|
|
|
var charWidth = Number(glyph.w || font.w) + letterSpacing;
|
|
|
|
// only draw text-background when there's some kind of value
|
|
if (options.textBackgroundColor) {
|
|
g.save();
|
|
g.fillStyle = options.textBackgroundColor;
|
|
g.translate(0, font.ascent);
|
|
g.fillRect(0, 0, charWidth + 10, -font.ascent + font.descent);
|
|
g.restore();
|
|
}
|
|
|
|
g.translate(charWidth, 0);
|
|
left += charWidth;
|
|
|
|
if (i == l-1) {
|
|
boundaries[boundaries.length - 1].width = left * scale;
|
|
boundaries[boundaries.length - 1].height = (-font.ascent + font.descent) * scale;
|
|
}
|
|
}
|
|
g.restore();
|
|
|
|
Cufon.textOptions.boundaries = boundaries;
|
|
}
|
|
|
|
function renderText(color) {
|
|
g.fillStyle = color || Cufon.textOptions.color || style.get('color');
|
|
|
|
var left = 0, lineNum = 0;
|
|
|
|
if (options.textAlign === 'right') {
|
|
g.translate(lineOffsets[lineNum], 0);
|
|
}
|
|
else if (options.textAlign === 'center') {
|
|
g.translate(lineOffsets[lineNum] / 2, 0);
|
|
}
|
|
|
|
for (var i = 0, l = chars.length; i < l; ++i) {
|
|
if (chars[i] === '\n') {
|
|
|
|
lineNum++;
|
|
|
|
var topOffset = -font.ascent - ((font.ascent / 5) * options.lineHeight);
|
|
|
|
if (options.textAlign === 'right') {
|
|
g.translate(-width, topOffset);
|
|
g.translate(lineOffsets[lineNum], 0);
|
|
}
|
|
else if (options.textAlign === 'center') {
|
|
// offset to the start of text in previous line AND half of its offset
|
|
// (essentially moving caret to the left edge of bounding box)
|
|
g.translate(-left - (lineOffsets[lineNum - 1] / 2), topOffset);
|
|
g.translate(lineOffsets[lineNum] / 2, 0);
|
|
}
|
|
else {
|
|
g.translate(-left, topOffset);
|
|
}
|
|
|
|
left = 0;
|
|
|
|
continue;
|
|
}
|
|
var glyph = font.glyphs[chars[i]] || font.missingGlyph;
|
|
if (!glyph) continue;
|
|
|
|
var charWidth = Number(glyph.w || font.w) + letterSpacing;
|
|
|
|
if (textDecoration) {
|
|
g.save();
|
|
g.strokeStyle = g.fillStyle;
|
|
|
|
// add 2x more thickness — closer to SVG rendering
|
|
g.lineWidth += g.lineWidth;
|
|
|
|
g.beginPath();
|
|
if (textDecoration.underline) {
|
|
g.moveTo(0, -font.face['underline-position'] + 0.5);
|
|
g.lineTo(charWidth, -font.face['underline-position'] + 0.5);
|
|
}
|
|
if (textDecoration.overline) {
|
|
g.moveTo(0, font.ascent + 0.5);
|
|
g.lineTo(charWidth, font.ascent + 0.5);
|
|
}
|
|
if (textDecoration['line-through']) {
|
|
g.moveTo(0, -font.descent + 0.5);
|
|
g.lineTo(charWidth, -font.descent + 0.5);
|
|
}
|
|
g.stroke();
|
|
g.restore();
|
|
}
|
|
|
|
if (isItalic) {
|
|
g.save();
|
|
g.transform(1, 0, -0.25, 1, 0, 0);
|
|
}
|
|
|
|
g.beginPath();
|
|
if (glyph.d) {
|
|
if (glyph.code) interpret(glyph.code, g);
|
|
else glyph.code = generateFromVML('m' + glyph.d, g);
|
|
}
|
|
|
|
g.fill();
|
|
|
|
if (options.strokeStyle) {
|
|
g.closePath();
|
|
g.save();
|
|
g.lineWidth = options.strokeWidth;
|
|
g.strokeStyle = options.strokeStyle;
|
|
g.stroke();
|
|
g.restore();
|
|
}
|
|
|
|
if (isItalic) {
|
|
g.restore();
|
|
}
|
|
|
|
g.translate(charWidth, 0);
|
|
left += charWidth;
|
|
}
|
|
}
|
|
|
|
g.save();
|
|
renderBackground();
|
|
if (shadows) {
|
|
for (var i = 0, l = shadows.length; i < l; ++i) {
|
|
var shadow = shadows[i];
|
|
g.save();
|
|
g.translate.apply(g, shadowOffsets[i]);
|
|
renderText(shadow.color);
|
|
g.restore();
|
|
}
|
|
}
|
|
renderText();
|
|
g.restore();
|
|
g.restore();
|
|
g.restore();
|
|
|
|
return wrapper;
|
|
|
|
};
|
|
|
|
})());
|
|
|
|
Cufon.registerEngine('vml', (function() {
|
|
|
|
if (!fabric.document.namespaces) return;
|
|
|
|
var canvasEl = fabric.document.createElement('canvas');
|
|
if (canvasEl && canvasEl.getContext && canvasEl.getContext.apply) return;
|
|
|
|
if (fabric.document.namespaces.cvml == null) {
|
|
fabric.document.namespaces.add('cvml', 'urn:schemas-microsoft-com:vml');
|
|
}
|
|
|
|
var check = fabric.document.createElement('cvml:shape');
|
|
check.style.behavior = 'url(#default#VML)';
|
|
if (!check.coordsize) return; // VML isn't supported
|
|
check = null;
|
|
|
|
fabric.document.write('<style type="text/css">' +
|
|
'.cufon-vml-canvas{text-indent:0}' +
|
|
'@media screen{' +
|
|
'cvml\\:shape,cvml\\:shadow{behavior:url(#default#VML);display:block;antialias:true;position:absolute}' +
|
|
'.cufon-vml-canvas{position:absolute;text-align:left}' +
|
|
'.cufon-vml{display:inline-block;position:relative;vertical-align:middle}' +
|
|
'.cufon-vml .cufon-alt{position:absolute;left:-10000in;font-size:1px}' +
|
|
'a .cufon-vml{cursor:pointer}' +
|
|
'}' +
|
|
'@media print{' +
|
|
'.cufon-vml *{display:none}' +
|
|
'.cufon-vml .cufon-alt{display:inline}' +
|
|
'}' +
|
|
'</style>');
|
|
|
|
function getFontSizeInPixels(el, value) {
|
|
return getSizeInPixels(el, /(?:em|ex|%)$/i.test(value) ? '1em' : value);
|
|
}
|
|
|
|
// Original by Dead Edwards.
|
|
// Combined with getFontSizeInPixels it also works with relative units.
|
|
function getSizeInPixels(el, value) {
|
|
if (/px$/i.test(value)) return parseFloat(value);
|
|
var style = el.style.left, runtimeStyle = el.runtimeStyle.left;
|
|
el.runtimeStyle.left = el.currentStyle.left;
|
|
el.style.left = value;
|
|
var result = el.style.pixelLeft;
|
|
el.style.left = style;
|
|
el.runtimeStyle.left = runtimeStyle;
|
|
return result;
|
|
}
|
|
|
|
return function(font, text, style, options, node, el, hasNext) {
|
|
var redraw = (text === null);
|
|
|
|
if (redraw) text = node.alt;
|
|
|
|
// @todo word-spacing, text-decoration
|
|
|
|
var viewBox = font.viewBox;
|
|
|
|
var size = style.computedFontSize ||
|
|
(style.computedFontSize = new Cufon.CSS.Size(getFontSizeInPixels(el, style.get('fontSize')) + 'px', font.baseSize));
|
|
|
|
var letterSpacing = style.computedLSpacing;
|
|
|
|
if (letterSpacing == undefined) {
|
|
letterSpacing = style.get('letterSpacing');
|
|
style.computedLSpacing = letterSpacing =
|
|
(letterSpacing == 'normal') ? 0 : ~~size.convertFrom(getSizeInPixels(el, letterSpacing));
|
|
}
|
|
|
|
var wrapper, canvas;
|
|
|
|
if (redraw) {
|
|
wrapper = node;
|
|
canvas = node.firstChild;
|
|
}
|
|
else {
|
|
wrapper = fabric.document.createElement('span');
|
|
wrapper.className = 'cufon cufon-vml';
|
|
wrapper.alt = text;
|
|
|
|
canvas = fabric.document.createElement('span');
|
|
canvas.className = 'cufon-vml-canvas';
|
|
wrapper.appendChild(canvas);
|
|
|
|
if (options.printable) {
|
|
var print = fabric.document.createElement('span');
|
|
print.className = 'cufon-alt';
|
|
print.appendChild(fabric.document.createTextNode(text));
|
|
wrapper.appendChild(print);
|
|
}
|
|
|
|
// ie6, for some reason, has trouble rendering the last VML element in the document.
|
|
// we can work around this by injecting a dummy element where needed.
|
|
// @todo find a better solution
|
|
if (!hasNext) wrapper.appendChild(fabric.document.createElement('cvml:shape'));
|
|
}
|
|
|
|
var wStyle = wrapper.style;
|
|
var cStyle = canvas.style;
|
|
|
|
var height = size.convert(viewBox.height), roundedHeight = Math.ceil(height);
|
|
var roundingFactor = roundedHeight / height;
|
|
var minX = viewBox.minX, minY = viewBox.minY;
|
|
|
|
cStyle.height = roundedHeight;
|
|
cStyle.top = Math.round(size.convert(minY - font.ascent));
|
|
cStyle.left = Math.round(size.convert(minX));
|
|
|
|
wStyle.height = size.convert(font.height) + 'px';
|
|
|
|
var textDecoration = Cufon.getTextDecoration(options);
|
|
|
|
var color = style.get('color');
|
|
|
|
var chars = Cufon.CSS.textTransform(text, style).split('');
|
|
|
|
var width = 0, offsetX = 0, advance = null;
|
|
|
|
var glyph, shape, shadows = options.textShadow;
|
|
|
|
// pre-calculate width
|
|
for (var i = 0, k = 0, l = chars.length; i < l; ++i) {
|
|
glyph = font.glyphs[chars[i]] || font.missingGlyph;
|
|
if (glyph) width += advance = ~~(glyph.w || font.w) + letterSpacing;
|
|
}
|
|
|
|
if (advance === null) return null;
|
|
|
|
var fullWidth = -minX + width + (viewBox.width - advance);
|
|
|
|
var shapeWidth = size.convert(fullWidth * roundingFactor), roundedShapeWidth = Math.round(shapeWidth);
|
|
|
|
var coordSize = fullWidth + ',' + viewBox.height, coordOrigin;
|
|
var stretch = 'r' + coordSize + 'nsnf';
|
|
|
|
for (i = 0; i < l; ++i) {
|
|
|
|
glyph = font.glyphs[chars[i]] || font.missingGlyph;
|
|
if (!glyph) continue;
|
|
|
|
if (redraw) {
|
|
// some glyphs may be missing so we can't use i
|
|
shape = canvas.childNodes[k];
|
|
if (shape.firstChild) shape.removeChild(shape.firstChild); // shadow
|
|
}
|
|
else {
|
|
shape = fabric.document.createElement('cvml:shape');
|
|
canvas.appendChild(shape);
|
|
}
|
|
|
|
shape.stroked = 'f';
|
|
shape.coordsize = coordSize;
|
|
shape.coordorigin = coordOrigin = (minX - offsetX) + ',' + minY;
|
|
shape.path = (glyph.d ? 'm' + glyph.d + 'xe' : '') + 'm' + coordOrigin + stretch;
|
|
shape.fillcolor = color;
|
|
|
|
// it's important to not set top/left or IE8 will grind to a halt
|
|
var sStyle = shape.style;
|
|
sStyle.width = roundedShapeWidth;
|
|
sStyle.height = roundedHeight;
|
|
|
|
if (shadows) {
|
|
// due to the limitations of the VML shadow element there
|
|
// can only be two visible shadows. opacity is shared
|
|
// for all shadows.
|
|
var shadow1 = shadows[0], shadow2 = shadows[1];
|
|
var color1 = Cufon.CSS.color(shadow1.color), color2;
|
|
var shadow = fabric.document.createElement('cvml:shadow');
|
|
shadow.on = 't';
|
|
shadow.color = color1.color;
|
|
shadow.offset = shadow1.offX + ',' + shadow1.offY;
|
|
if (shadow2) {
|
|
color2 = Cufon.CSS.color(shadow2.color);
|
|
shadow.type = 'double';
|
|
shadow.color2 = color2.color;
|
|
shadow.offset2 = shadow2.offX + ',' + shadow2.offY;
|
|
}
|
|
shadow.opacity = color1.opacity || (color2 && color2.opacity) || 1;
|
|
shape.appendChild(shadow);
|
|
}
|
|
|
|
offsetX += ~~(glyph.w || font.w) + letterSpacing;
|
|
|
|
++k;
|
|
|
|
}
|
|
|
|
wStyle.width = Math.max(Math.ceil(size.convert(width * roundingFactor)), 0);
|
|
|
|
return wrapper;
|
|
|
|
};
|
|
|
|
})());
|
|
|
|
Cufon.getTextDecoration = function(options) {
|
|
return {
|
|
underline: options.textDecoration === 'underline',
|
|
overline: options.textDecoration === 'overline',
|
|
'line-through': options.textDecoration === 'line-through'
|
|
};
|
|
};
|
|
|
|
if (typeof exports != 'undefined') {
|
|
exports.Cufon = Cufon;
|
|
}
|
|
|
|
|
|
/*
|
|
json2.js
|
|
2014-02-04
|
|
|
|
Public Domain.
|
|
|
|
NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
|
|
|
|
See http://www.JSON.org/js.html
|
|
|
|
|
|
This code should be minified before deployment.
|
|
See http://javascript.crockford.com/jsmin.html
|
|
|
|
USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
|
|
NOT CONTROL.
|
|
|
|
|
|
This file creates a global JSON object containing two methods: stringify
|
|
and parse.
|
|
|
|
JSON.stringify(value, replacer, space)
|
|
value any JavaScript value, usually an object or array.
|
|
|
|
replacer an optional parameter that determines how object
|
|
values are stringified for objects. It can be a
|
|
function or an array of strings.
|
|
|
|
space an optional parameter that specifies the indentation
|
|
of nested structures. If it is omitted, the text will
|
|
be packed without extra whitespace. If it is a number,
|
|
it will specify the number of spaces to indent at each
|
|
level. If it is a string (such as '\t' or ' '),
|
|
it contains the characters used to indent at each level.
|
|
|
|
This method produces a JSON text from a JavaScript value.
|
|
|
|
When an object value is found, if the object contains a toJSON
|
|
method, its toJSON method will be called and the result will be
|
|
stringified. A toJSON method does not serialize: it returns the
|
|
value represented by the name/value pair that should be serialized,
|
|
or undefined if nothing should be serialized. The toJSON method
|
|
will be passed the key associated with the value, and this will be
|
|
bound to the value
|
|
|
|
For example, this would serialize Dates as ISO strings.
|
|
|
|
Date.prototype.toJSON = function (key) {
|
|
function f(n) {
|
|
// Format integers to have at least two digits.
|
|
return n < 10 ? '0' + n : n;
|
|
}
|
|
|
|
return this.getUTCFullYear() + '-' +
|
|
f(this.getUTCMonth() + 1) + '-' +
|
|
f(this.getUTCDate()) + 'T' +
|
|
f(this.getUTCHours()) + ':' +
|
|
f(this.getUTCMinutes()) + ':' +
|
|
f(this.getUTCSeconds()) + 'Z';
|
|
};
|
|
|
|
You can provide an optional replacer method. It will be passed the
|
|
key and value of each member, with this bound to the containing
|
|
object. The value that is returned from your method will be
|
|
serialized. If your method returns undefined, then the member will
|
|
be excluded from the serialization.
|
|
|
|
If the replacer parameter is an array of strings, then it will be
|
|
used to select the members to be serialized. It filters the results
|
|
such that only members with keys listed in the replacer array are
|
|
stringified.
|
|
|
|
Values that do not have JSON representations, such as undefined or
|
|
functions, will not be serialized. Such values in objects will be
|
|
dropped; in arrays they will be replaced with null. You can use
|
|
a replacer function to replace those with JSON values.
|
|
JSON.stringify(undefined) returns undefined.
|
|
|
|
The optional space parameter produces a stringification of the
|
|
value that is filled with line breaks and indentation to make it
|
|
easier to read.
|
|
|
|
If the space parameter is a non-empty string, then that string will
|
|
be used for indentation. If the space parameter is a number, then
|
|
the indentation will be that many spaces.
|
|
|
|
Example:
|
|
|
|
text = JSON.stringify(['e', {pluribus: 'unum'}]);
|
|
// text is '["e",{"pluribus":"unum"}]'
|
|
|
|
|
|
text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');
|
|
// text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'
|
|
|
|
text = JSON.stringify([new Date()], function (key, value) {
|
|
return this[key] instanceof Date ?
|
|
'Date(' + this[key] + ')' : value;
|
|
});
|
|
// text is '["Date(---current time---)"]'
|
|
|
|
|
|
JSON.parse(text, reviver)
|
|
This method parses a JSON text to produce an object or array.
|
|
It can throw a SyntaxError exception.
|
|
|
|
The optional reviver parameter is a function that can filter and
|
|
transform the results. It receives each of the keys and values,
|
|
and its return value is used instead of the original value.
|
|
If it returns what it received, then the structure is not modified.
|
|
If it returns undefined then the member is deleted.
|
|
|
|
Example:
|
|
|
|
// Parse the text. Values that look like ISO date strings will
|
|
// be converted to Date objects.
|
|
|
|
myData = JSON.parse(text, function (key, value) {
|
|
var a;
|
|
if (typeof value === 'string') {
|
|
a =
|
|
/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
|
|
if (a) {
|
|
return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
|
|
+a[5], +a[6]));
|
|
}
|
|
}
|
|
return value;
|
|
});
|
|
|
|
myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {
|
|
var d;
|
|
if (typeof value === 'string' &&
|
|
value.slice(0, 5) === 'Date(' &&
|
|
value.slice(-1) === ')') {
|
|
d = new Date(value.slice(5, -1));
|
|
if (d) {
|
|
return d;
|
|
}
|
|
}
|
|
return value;
|
|
});
|
|
|
|
|
|
This is a reference implementation. You are free to copy, modify, or
|
|
redistribute.
|
|
*/
|
|
|
|
/*jslint evil: true, regexp: true */
|
|
|
|
/*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,
|
|
call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,
|
|
getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,
|
|
lastIndex, length, parse, prototype, push, replace, slice, stringify,
|
|
test, toJSON, toString, valueOf
|
|
*/
|
|
|
|
|
|
// Create a JSON object only if one does not already exist. We create the
|
|
// methods in a closure to avoid creating global variables.
|
|
|
|
if (typeof JSON !== 'object') {
|
|
JSON = {};
|
|
}
|
|
|
|
(function () {
|
|
'use strict';
|
|
|
|
function f(n) {
|
|
// Format integers to have at least two digits.
|
|
return n < 10 ? '0' + n : n;
|
|
}
|
|
|
|
if (typeof Date.prototype.toJSON !== 'function') {
|
|
|
|
Date.prototype.toJSON = function () {
|
|
|
|
return isFinite(this.valueOf())
|
|
? this.getUTCFullYear() + '-' +
|
|
f(this.getUTCMonth() + 1) + '-' +
|
|
f(this.getUTCDate()) + 'T' +
|
|
f(this.getUTCHours()) + ':' +
|
|
f(this.getUTCMinutes()) + ':' +
|
|
f(this.getUTCSeconds()) + 'Z'
|
|
: null;
|
|
};
|
|
|
|
String.prototype.toJSON =
|
|
Number.prototype.toJSON =
|
|
Boolean.prototype.toJSON = function () {
|
|
return this.valueOf();
|
|
};
|
|
}
|
|
|
|
var cx,
|
|
escapable,
|
|
gap,
|
|
indent,
|
|
meta,
|
|
rep;
|
|
|
|
|
|
function quote(string) {
|
|
|
|
// If the string contains no control characters, no quote characters, and no
|
|
// backslash characters, then we can safely slap some quotes around it.
|
|
// Otherwise we must also replace the offending characters with safe escape
|
|
// sequences.
|
|
|
|
escapable.lastIndex = 0;
|
|
return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
|
|
var c = meta[a];
|
|
return typeof c === 'string'
|
|
? c
|
|
: '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
|
|
}) + '"' : '"' + string + '"';
|
|
}
|
|
|
|
|
|
function str(key, holder) {
|
|
|
|
// Produce a string from holder[key].
|
|
|
|
var i, // The loop counter.
|
|
k, // The member key.
|
|
v, // The member value.
|
|
length,
|
|
mind = gap,
|
|
partial,
|
|
value = holder[key];
|
|
|
|
// If the value has a toJSON method, call it to obtain a replacement value.
|
|
|
|
if (value && typeof value === 'object' &&
|
|
typeof value.toJSON === 'function') {
|
|
value = value.toJSON(key);
|
|
}
|
|
|
|
// If we were called with a replacer function, then call the replacer to
|
|
// obtain a replacement value.
|
|
|
|
if (typeof rep === 'function') {
|
|
value = rep.call(holder, key, value);
|
|
}
|
|
|
|
// What happens next depends on the value's type.
|
|
|
|
switch (typeof value) {
|
|
case 'string':
|
|
return quote(value);
|
|
|
|
case 'number':
|
|
|
|
// JSON numbers must be finite. Encode non-finite numbers as null.
|
|
|
|
return isFinite(value) ? String(value) : 'null';
|
|
|
|
case 'boolean':
|
|
case 'null':
|
|
|
|
// If the value is a boolean or null, convert it to a string. Note:
|
|
// typeof null does not produce 'null'. The case is included here in
|
|
// the remote chance that this gets fixed someday.
|
|
|
|
return String(value);
|
|
|
|
// If the type is 'object', we might be dealing with an object or an array or
|
|
// null.
|
|
|
|
case 'object':
|
|
|
|
// Due to a specification blunder in ECMAScript, typeof null is 'object',
|
|
// so watch out for that case.
|
|
|
|
if (!value) {
|
|
return 'null';
|
|
}
|
|
|
|
// Make an array to hold the partial results of stringifying this object value.
|
|
|
|
gap += indent;
|
|
partial = [];
|
|
|
|
// Is the value an array?
|
|
|
|
if (Object.prototype.toString.apply(value) === '[object Array]') {
|
|
|
|
// The value is an array. Stringify every element. Use null as a placeholder
|
|
// for non-JSON values.
|
|
|
|
length = value.length;
|
|
for (i = 0; i < length; i += 1) {
|
|
partial[i] = str(i, value) || 'null';
|
|
}
|
|
|
|
// Join all of the elements together, separated with commas, and wrap them in
|
|
// brackets.
|
|
|
|
v = partial.length === 0
|
|
? '[]'
|
|
: gap
|
|
? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']'
|
|
: '[' + partial.join(',') + ']';
|
|
gap = mind;
|
|
return v;
|
|
}
|
|
|
|
// If the replacer is an array, use it to select the members to be stringified.
|
|
|
|
if (rep && typeof rep === 'object') {
|
|
length = rep.length;
|
|
for (i = 0; i < length; i += 1) {
|
|
if (typeof rep[i] === 'string') {
|
|
k = rep[i];
|
|
v = str(k, value);
|
|
if (v) {
|
|
partial.push(quote(k) + (gap ? ': ' : ':') + v);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
|
|
// Otherwise, iterate through all of the keys in the object.
|
|
|
|
for (k in value) {
|
|
if (Object.prototype.hasOwnProperty.call(value, k)) {
|
|
v = str(k, value);
|
|
if (v) {
|
|
partial.push(quote(k) + (gap ? ': ' : ':') + v);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Join all of the member texts together, separated with commas,
|
|
// and wrap them in braces.
|
|
|
|
v = partial.length === 0
|
|
? '{}'
|
|
: gap
|
|
? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}'
|
|
: '{' + partial.join(',') + '}';
|
|
gap = mind;
|
|
return v;
|
|
}
|
|
}
|
|
|
|
// If the JSON object does not yet have a stringify method, give it one.
|
|
|
|
if (typeof JSON.stringify !== 'function') {
|
|
escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
|
|
meta = { // table of character substitutions
|
|
'\b': '\\b',
|
|
'\t': '\\t',
|
|
'\n': '\\n',
|
|
'\f': '\\f',
|
|
'\r': '\\r',
|
|
'"' : '\\"',
|
|
'\\': '\\\\'
|
|
};
|
|
JSON.stringify = function (value, replacer, space) {
|
|
|
|
// The stringify method takes a value and an optional replacer, and an optional
|
|
// space parameter, and returns a JSON text. The replacer can be a function
|
|
// that can replace values, or an array of strings that will select the keys.
|
|
// A default replacer method can be provided. Use of the space parameter can
|
|
// produce text that is more easily readable.
|
|
|
|
var i;
|
|
gap = '';
|
|
indent = '';
|
|
|
|
// If the space parameter is a number, make an indent string containing that
|
|
// many spaces.
|
|
|
|
if (typeof space === 'number') {
|
|
for (i = 0; i < space; i += 1) {
|
|
indent += ' ';
|
|
}
|
|
|
|
// If the space parameter is a string, it will be used as the indent string.
|
|
|
|
} else if (typeof space === 'string') {
|
|
indent = space;
|
|
}
|
|
|
|
// If there is a replacer, it must be a function or an array.
|
|
// Otherwise, throw an error.
|
|
|
|
rep = replacer;
|
|
if (replacer && typeof replacer !== 'function' &&
|
|
(typeof replacer !== 'object' ||
|
|
typeof replacer.length !== 'number')) {
|
|
throw new Error('JSON.stringify');
|
|
}
|
|
|
|
// Make a fake root object containing our value under the key of ''.
|
|
// Return the result of stringifying the value.
|
|
|
|
return str('', {'': value});
|
|
};
|
|
}
|
|
|
|
|
|
// If the JSON object does not yet have a parse method, give it one.
|
|
|
|
if (typeof JSON.parse !== 'function') {
|
|
cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
|
|
JSON.parse = function (text, reviver) {
|
|
|
|
// The parse method takes a text and an optional reviver function, and returns
|
|
// a JavaScript value if the text is a valid JSON text.
|
|
|
|
var j;
|
|
|
|
function walk(holder, key) {
|
|
|
|
// The walk method is used to recursively walk the resulting structure so
|
|
// that modifications can be made.
|
|
|
|
var k, v, value = holder[key];
|
|
if (value && typeof value === 'object') {
|
|
for (k in value) {
|
|
if (Object.prototype.hasOwnProperty.call(value, k)) {
|
|
v = walk(value, k);
|
|
if (v !== undefined) {
|
|
value[k] = v;
|
|
} else {
|
|
delete value[k];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return reviver.call(holder, key, value);
|
|
}
|
|
|
|
|
|
// Parsing happens in four stages. In the first stage, we replace certain
|
|
// Unicode characters with escape sequences. JavaScript handles many characters
|
|
// incorrectly, either silently deleting them, or treating them as line endings.
|
|
|
|
text = String(text);
|
|
cx.lastIndex = 0;
|
|
if (cx.test(text)) {
|
|
text = text.replace(cx, function (a) {
|
|
return '\\u' +
|
|
('0000' + a.charCodeAt(0).toString(16)).slice(-4);
|
|
});
|
|
}
|
|
|
|
// In the second stage, we run the text against regular expressions that look
|
|
// for non-JSON patterns. We are especially concerned with '()' and 'new'
|
|
// because they can cause invocation, and '=' because it can cause mutation.
|
|
// But just to be safe, we want to reject all unexpected forms.
|
|
|
|
// We split the second stage into 4 regexp operations in order to work around
|
|
// crippling inefficiencies in IE's and Safari's regexp engines. First we
|
|
// replace the JSON backslash pairs with '@' (a non-JSON character). Second, we
|
|
// replace all simple value tokens with ']' characters. Third, we delete all
|
|
// open brackets that follow a colon or comma or that begin the text. Finally,
|
|
// we look to see that the remaining characters are only whitespace or ']' or
|
|
// ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.
|
|
|
|
if (/^[\],:{}\s]*$/
|
|
.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@')
|
|
.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
|
|
.replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
|
|
|
|
// In the third stage we use the eval function to compile the text into a
|
|
// JavaScript structure. The '{' operator is subject to a syntactic ambiguity
|
|
// in JavaScript: it can begin a block or an object literal. We wrap the text
|
|
// in parens to eliminate the ambiguity.
|
|
|
|
j = eval('(' + text + ')');
|
|
|
|
// In the optional fourth stage, we recursively walk the new structure, passing
|
|
// each name/value pair to a reviver function for possible transformation.
|
|
|
|
return typeof reviver === 'function'
|
|
? walk({'': j}, '')
|
|
: j;
|
|
}
|
|
|
|
// If the text is not JSON parseable, then a SyntaxError is thrown.
|
|
|
|
throw new SyntaxError('JSON.parse');
|
|
};
|
|
}
|
|
}());
|
|
|
|
|
|
(function(){
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} eventName
|
|
* @param {Function} handler
|
|
*/
|
|
function _removeEventListener(eventName, handler) {
|
|
if (!this.__eventListeners[eventName]) {
|
|
return;
|
|
}
|
|
|
|
if (handler) {
|
|
fabric.util.removeFromArray(this.__eventListeners[eventName], handler);
|
|
}
|
|
else {
|
|
this.__eventListeners[eventName].length = 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Observes specified event
|
|
* @deprecated `observe` deprecated since 0.8.34 (use `on` instead)
|
|
* @memberOf fabric.Observable
|
|
* @alias on
|
|
* @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler})
|
|
* @param {Function} handler Function that receives a notification when an event of the specified type occurs
|
|
* @return {Self} thisArg
|
|
* @chainable
|
|
*/
|
|
function observe(eventName, handler) {
|
|
if (!this.__eventListeners) {
|
|
this.__eventListeners = { };
|
|
}
|
|
// one object with key/value pairs was passed
|
|
if (arguments.length === 1) {
|
|
for (var prop in eventName) {
|
|
this.on(prop, eventName[prop]);
|
|
}
|
|
}
|
|
else {
|
|
if (!this.__eventListeners[eventName]) {
|
|
this.__eventListeners[eventName] = [ ];
|
|
}
|
|
this.__eventListeners[eventName].push(handler);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Stops event observing for a particular event handler. Calling this method
|
|
* without arguments removes all handlers for all events
|
|
* @deprecated `stopObserving` deprecated since 0.8.34 (use `off` instead)
|
|
* @memberOf fabric.Observable
|
|
* @alias off
|
|
* @param {String|Object} eventName Event name (eg. 'after:render') or object with key/value pairs (eg. {'after:render': handler, 'selection:cleared': handler})
|
|
* @param {Function} handler Function to be deleted from EventListeners
|
|
* @return {Self} thisArg
|
|
* @chainable
|
|
*/
|
|
function stopObserving(eventName, handler) {
|
|
if (!this.__eventListeners) {
|
|
return;
|
|
}
|
|
|
|
// remove all key/value pairs (event name -> event handler)
|
|
if (arguments.length === 0) {
|
|
this.__eventListeners = { };
|
|
}
|
|
// one object with key/value pairs was passed
|
|
else if (arguments.length === 1 && typeof arguments[0] === 'object') {
|
|
for (var prop in eventName) {
|
|
_removeEventListener.call(this, prop, eventName[prop]);
|
|
}
|
|
}
|
|
else {
|
|
_removeEventListener.call(this, eventName, handler);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Fires event with an optional options object
|
|
* @deprecated `fire` deprecated since 1.0.7 (use `trigger` instead)
|
|
* @memberOf fabric.Observable
|
|
* @alias trigger
|
|
* @param {String} eventName Event name to fire
|
|
* @param {Object} [options] Options object
|
|
* @return {Self} thisArg
|
|
* @chainable
|
|
*/
|
|
function fire(eventName, options) {
|
|
if (!this.__eventListeners) {
|
|
return;
|
|
}
|
|
|
|
var listenersForEvent = this.__eventListeners[eventName];
|
|
if (!listenersForEvent) {
|
|
return;
|
|
}
|
|
|
|
for (var i = 0, len = listenersForEvent.length; i < len; i++) {
|
|
// avoiding try/catch for perf. reasons
|
|
listenersForEvent[i].call(this, options || { });
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @namespace fabric.Observable
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#events}
|
|
* @see {@link http://fabricjs.com/events/|Events demo}
|
|
*/
|
|
fabric.Observable = {
|
|
observe: observe,
|
|
stopObserving: stopObserving,
|
|
fire: fire,
|
|
|
|
on: observe,
|
|
off: stopObserving,
|
|
trigger: fire
|
|
};
|
|
})();
|
|
|
|
|
|
/**
|
|
* @namespace fabric.Collection
|
|
*/
|
|
fabric.Collection = {
|
|
|
|
/**
|
|
* Adds objects to collection, then renders canvas (if `renderOnAddRemove` is not `false`)
|
|
* Objects should be instances of (or inherit from) fabric.Object
|
|
* @param {...fabric.Object} object Zero or more fabric instances
|
|
* @return {Self} thisArg
|
|
*/
|
|
add: function () {
|
|
this._objects.push.apply(this._objects, arguments);
|
|
for (var i = 0, length = arguments.length; i < length; i++) {
|
|
this._onObjectAdded(arguments[i]);
|
|
}
|
|
this.renderOnAddRemove && this.renderAll();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Inserts an object into collection at specified index, then renders canvas (if `renderOnAddRemove` is not `false`)
|
|
* An object should be an instance of (or inherit from) fabric.Object
|
|
* @param {Object} object Object to insert
|
|
* @param {Number} index Index to insert object at
|
|
* @param {Boolean} nonSplicing When `true`, no splicing (shifting) of objects occurs
|
|
* @return {Self} thisArg
|
|
* @chainable
|
|
*/
|
|
insertAt: function (object, index, nonSplicing) {
|
|
var objects = this.getObjects();
|
|
if (nonSplicing) {
|
|
objects[index] = object;
|
|
}
|
|
else {
|
|
objects.splice(index, 0, object);
|
|
}
|
|
this._onObjectAdded(object);
|
|
this.renderOnAddRemove && this.renderAll();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Removes objects from a collection, then renders canvas (if `renderOnAddRemove` is not `false`)
|
|
* @param {...fabric.Object} object Zero or more fabric instances
|
|
* @return {Self} thisArg
|
|
* @chainable
|
|
*/
|
|
remove: function() {
|
|
var objects = this.getObjects(),
|
|
index;
|
|
|
|
for (var i = 0, length = arguments.length; i < length; i++) {
|
|
index = objects.indexOf(arguments[i]);
|
|
|
|
// only call onObjectRemoved if an object was actually removed
|
|
if (index !== -1) {
|
|
objects.splice(index, 1);
|
|
this._onObjectRemoved(arguments[i]);
|
|
}
|
|
}
|
|
|
|
this.renderOnAddRemove && this.renderAll();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Executes given function for each object in this group
|
|
* @param {Function} callback
|
|
* Callback invoked with current object as first argument,
|
|
* index - as second and an array of all objects - as third.
|
|
* Iteration happens in reverse order (for performance reasons).
|
|
* Callback is invoked in a context of Global Object (e.g. `window`)
|
|
* when no `context` argument is given
|
|
*
|
|
* @param {Object} context Context (aka thisObject)
|
|
* @return {Self} thisArg
|
|
*/
|
|
forEachObject: function(callback, context) {
|
|
var objects = this.getObjects(),
|
|
i = objects.length;
|
|
while (i--) {
|
|
callback.call(context, objects[i], i, objects);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns an array of children objects of this instance
|
|
* Type parameter introduced in 1.3.10
|
|
* @param {String} [type] When specified, only objects of this type are returned
|
|
* @return {Array}
|
|
*/
|
|
getObjects: function(type) {
|
|
if (typeof type === 'undefined') {
|
|
return this._objects;
|
|
}
|
|
return this._objects.filter(function(o) {
|
|
return o.type === type;
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Returns object at specified index
|
|
* @param {Number} index
|
|
* @return {Self} thisArg
|
|
*/
|
|
item: function (index) {
|
|
return this.getObjects()[index];
|
|
},
|
|
|
|
/**
|
|
* Returns true if collection contains no objects
|
|
* @return {Boolean} true if collection is empty
|
|
*/
|
|
isEmpty: function () {
|
|
return this.getObjects().length === 0;
|
|
},
|
|
|
|
/**
|
|
* Returns a size of a collection (i.e: length of an array containing its objects)
|
|
* @return {Number} Collection size
|
|
*/
|
|
size: function() {
|
|
return this.getObjects().length;
|
|
},
|
|
|
|
/**
|
|
* Returns true if collection contains an object
|
|
* @param {Object} object Object to check against
|
|
* @return {Boolean} `true` if collection contains an object
|
|
*/
|
|
contains: function(object) {
|
|
return this.getObjects().indexOf(object) > -1;
|
|
},
|
|
|
|
/**
|
|
* Returns number representation of a collection complexity
|
|
* @return {Number} complexity
|
|
*/
|
|
complexity: function () {
|
|
return this.getObjects().reduce(function (memo, current) {
|
|
memo += current.complexity ? current.complexity() : 0;
|
|
return memo;
|
|
}, 0);
|
|
}
|
|
};
|
|
|
|
|
|
(function(global) {
|
|
|
|
var sqrt = Math.sqrt,
|
|
atan2 = Math.atan2,
|
|
PiBy180 = Math.PI / 180;
|
|
|
|
/**
|
|
* @namespace fabric.util
|
|
*/
|
|
fabric.util = {
|
|
|
|
/**
|
|
* Removes value from an array.
|
|
* Presence of value (and its position in an array) is determined via `Array.prototype.indexOf`
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Array} array
|
|
* @param {Any} value
|
|
* @return {Array} original array
|
|
*/
|
|
removeFromArray: function(array, value) {
|
|
var idx = array.indexOf(value);
|
|
if (idx !== -1) {
|
|
array.splice(idx, 1);
|
|
}
|
|
return array;
|
|
},
|
|
|
|
/**
|
|
* Returns random number between 2 specified ones.
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Number} min lower limit
|
|
* @param {Number} max upper limit
|
|
* @return {Number} random value (between min and max)
|
|
*/
|
|
getRandomInt: function(min, max) {
|
|
return Math.floor(Math.random() * (max - min + 1)) + min;
|
|
},
|
|
|
|
/**
|
|
* Transforms degrees to radians.
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Number} degrees value in degrees
|
|
* @return {Number} value in radians
|
|
*/
|
|
degreesToRadians: function(degrees) {
|
|
return degrees * PiBy180;
|
|
},
|
|
|
|
/**
|
|
* Transforms radians to degrees.
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Number} radians value in radians
|
|
* @return {Number} value in degrees
|
|
*/
|
|
radiansToDegrees: function(radians) {
|
|
return radians / PiBy180;
|
|
},
|
|
|
|
/**
|
|
* Rotates `point` around `origin` with `radians`
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {fabric.Point} point The point to rotate
|
|
* @param {fabric.Point} origin The origin of the rotation
|
|
* @param {Number} radians The radians of the angle for the rotation
|
|
* @return {fabric.Point} The new rotated point
|
|
*/
|
|
rotatePoint: function(point, origin, radians) {
|
|
var sin = Math.sin(radians),
|
|
cos = Math.cos(radians);
|
|
|
|
point.subtractEquals(origin);
|
|
|
|
var rx = point.x * cos - point.y * sin,
|
|
ry = point.x * sin + point.y * cos;
|
|
|
|
return new fabric.Point(rx, ry).addEquals(origin);
|
|
},
|
|
|
|
/**
|
|
* Apply transform t to point p
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {fabric.Point} p The point to transform
|
|
* @param {Array} t The transform
|
|
* @param {Boolean} [ignoreOffset] Indicates that the offset should not be applied
|
|
* @return {fabric.Point} The transformed point
|
|
*/
|
|
transformPoint: function(p, t, ignoreOffset) {
|
|
if (ignoreOffset) {
|
|
return new fabric.Point(
|
|
t[0] * p.x + t[1] * p.y,
|
|
t[2] * p.x + t[3] * p.y
|
|
);
|
|
}
|
|
return new fabric.Point(
|
|
t[0] * p.x + t[1] * p.y + t[4],
|
|
t[2] * p.x + t[3] * p.y + t[5]
|
|
);
|
|
},
|
|
|
|
/**
|
|
* Invert transformation t
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Array} t The transform
|
|
* @return {Array} The inverted transform
|
|
*/
|
|
invertTransform: function(t) {
|
|
var r = t.slice(),
|
|
a = 1 / (t[0] * t[3] - t[1] * t[2]);
|
|
r = [a * t[3], -a * t[1], -a * t[2], a * t[0], 0, 0];
|
|
var o = fabric.util.transformPoint({ x: t[4], y: t[5] }, r);
|
|
r[4] = -o.x;
|
|
r[5] = -o.y;
|
|
return r;
|
|
},
|
|
|
|
/**
|
|
* A wrapper around Number#toFixed, which contrary to native method returns number, not string.
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Number|String} number number to operate on
|
|
* @param {Number} fractionDigits number of fraction digits to "leave"
|
|
* @return {Number}
|
|
*/
|
|
toFixed: function(number, fractionDigits) {
|
|
return parseFloat(Number(number).toFixed(fractionDigits));
|
|
},
|
|
|
|
/**
|
|
* Converts from attribute value to pixel value if applicable.
|
|
* Returns converted pixels or original value not converted.
|
|
* @param {Number|String} value number to operate on
|
|
* @return {Number|String}
|
|
*/
|
|
parseUnit: function(value) {
|
|
var unit = /\D{0,2}$/.exec(value),
|
|
number = parseFloat(value);
|
|
|
|
switch (unit[0]) {
|
|
case 'mm':
|
|
return number * fabric.DPI / 25.4;
|
|
|
|
case 'cm':
|
|
return number * fabric.DPI / 2.54;
|
|
|
|
case 'in':
|
|
return number * fabric.DPI;
|
|
|
|
case 'pt':
|
|
return number * fabric.DPI / 72; // or * 4 / 3
|
|
|
|
case 'pc':
|
|
return number * fabric.DPI / 72 * 12; // or * 16
|
|
|
|
default:
|
|
return number;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Function which always returns `false`.
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @return {Boolean}
|
|
*/
|
|
falseFunction: function() {
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Returns klass "Class" object of given namespace
|
|
* @memberOf fabric.util
|
|
* @param {String} type Type of object (eg. 'circle')
|
|
* @param {String} namespace Namespace to get klass "Class" object from
|
|
* @return {Object} klass "Class"
|
|
*/
|
|
getKlass: function(type, namespace) {
|
|
// capitalize first letter only
|
|
type = fabric.util.string.camelize(type.charAt(0).toUpperCase() + type.slice(1));
|
|
return fabric.util.resolveNamespace(namespace)[type];
|
|
},
|
|
|
|
/**
|
|
* Returns object of given namespace
|
|
* @memberOf fabric.util
|
|
* @param {String} namespace Namespace string e.g. 'fabric.Image.filter' or 'fabric'
|
|
* @return {Object} Object for given namespace (default fabric)
|
|
*/
|
|
resolveNamespace: function(namespace) {
|
|
if (!namespace) {
|
|
return fabric;
|
|
}
|
|
|
|
var parts = namespace.split('.'),
|
|
len = parts.length,
|
|
obj = global || fabric.window;
|
|
|
|
for (var i = 0; i < len; ++i) {
|
|
obj = obj[parts[i]];
|
|
}
|
|
|
|
return obj;
|
|
},
|
|
|
|
/**
|
|
* Loads image element from given url and passes it to a callback
|
|
* @memberOf fabric.util
|
|
* @param {String} url URL representing an image
|
|
* @param {Function} callback Callback; invoked with loaded image
|
|
* @param {Any} [context] Context to invoke callback in
|
|
* @param {Object} [crossOrigin] crossOrigin value to set image element to
|
|
*/
|
|
loadImage: function(url, callback, context, crossOrigin) {
|
|
if (!url) {
|
|
callback && callback.call(context, url);
|
|
return;
|
|
}
|
|
|
|
var img = fabric.util.createImage();
|
|
|
|
/** @ignore */
|
|
img.onload = function () {
|
|
callback && callback.call(context, img);
|
|
img = img.onload = img.onerror = null;
|
|
};
|
|
|
|
/** @ignore */
|
|
img.onerror = function() {
|
|
fabric.log('Error loading ' + img.src);
|
|
callback && callback.call(context, null, true);
|
|
img = img.onload = img.onerror = null;
|
|
};
|
|
|
|
// data-urls appear to be buggy with crossOrigin
|
|
// https://github.com/kangax/fabric.js/commit/d0abb90f1cd5c5ef9d2a94d3fb21a22330da3e0a#commitcomment-4513767
|
|
// see https://code.google.com/p/chromium/issues/detail?id=315152
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=935069
|
|
if (url.indexOf('data') !== 0 && typeof crossOrigin !== 'undefined') {
|
|
img.crossOrigin = crossOrigin;
|
|
}
|
|
|
|
img.src = url;
|
|
},
|
|
|
|
/**
|
|
* Creates corresponding fabric instances from their object representations
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Array} objects Objects to enliven
|
|
* @param {Function} callback Callback to invoke when all objects are created
|
|
* @param {String} namespace Namespace to get klass "Class" object from
|
|
* @param {Function} reviver Method for further parsing of object elements,
|
|
* called after each fabric object created.
|
|
*/
|
|
enlivenObjects: function(objects, callback, namespace, reviver) {
|
|
objects = objects || [ ];
|
|
|
|
function onLoaded() {
|
|
if (++numLoadedObjects === numTotalObjects) {
|
|
callback && callback(enlivenedObjects);
|
|
}
|
|
}
|
|
|
|
var enlivenedObjects = [ ],
|
|
numLoadedObjects = 0,
|
|
numTotalObjects = objects.length;
|
|
|
|
if (!numTotalObjects) {
|
|
callback && callback(enlivenedObjects);
|
|
return;
|
|
}
|
|
|
|
objects.forEach(function (o, index) {
|
|
// if sparse array
|
|
if (!o || !o.type) {
|
|
onLoaded();
|
|
return;
|
|
}
|
|
var klass = fabric.util.getKlass(o.type, namespace);
|
|
if (klass.async) {
|
|
klass.fromObject(o, function (obj, error) {
|
|
if (!error) {
|
|
enlivenedObjects[index] = obj;
|
|
reviver && reviver(o, enlivenedObjects[index]);
|
|
}
|
|
onLoaded();
|
|
});
|
|
}
|
|
else {
|
|
enlivenedObjects[index] = klass.fromObject(o);
|
|
reviver && reviver(o, enlivenedObjects[index]);
|
|
onLoaded();
|
|
}
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Groups SVG elements (usually those retrieved from SVG document)
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Array} elements SVG elements to group
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Object|fabric.PathGroup}
|
|
*/
|
|
groupSVGElements: function(elements, options, path) {
|
|
var object;
|
|
|
|
object = new fabric.PathGroup(elements, options);
|
|
|
|
if (typeof path !== 'undefined') {
|
|
object.setSourcePath(path);
|
|
}
|
|
return object;
|
|
},
|
|
|
|
/**
|
|
* Populates an object with properties of another object
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Object} source Source object
|
|
* @param {Object} destination Destination object
|
|
* @return {Array} properties Propertie names to include
|
|
*/
|
|
populateWithProperties: function(source, destination, properties) {
|
|
if (properties && Object.prototype.toString.call(properties) === '[object Array]') {
|
|
for (var i = 0, len = properties.length; i < len; i++) {
|
|
if (properties[i] in source) {
|
|
destination[properties[i]] = source[properties[i]];
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Draws a dashed line between two points
|
|
*
|
|
* This method is used to draw dashed line around selection area.
|
|
* See <a href="http://stackoverflow.com/questions/4576724/dotted-stroke-in-canvas">dotted stroke in canvas</a>
|
|
*
|
|
* @param {CanvasRenderingContext2D} ctx context
|
|
* @param {Number} x start x coordinate
|
|
* @param {Number} y start y coordinate
|
|
* @param {Number} x2 end x coordinate
|
|
* @param {Number} y2 end y coordinate
|
|
* @param {Array} da dash array pattern
|
|
*/
|
|
drawDashedLine: function(ctx, x, y, x2, y2, da) {
|
|
var dx = x2 - x,
|
|
dy = y2 - y,
|
|
len = sqrt(dx * dx + dy * dy),
|
|
rot = atan2(dy, dx),
|
|
dc = da.length,
|
|
di = 0,
|
|
draw = true;
|
|
|
|
ctx.save();
|
|
ctx.translate(x, y);
|
|
ctx.moveTo(0, 0);
|
|
ctx.rotate(rot);
|
|
|
|
x = 0;
|
|
while (len > x) {
|
|
x += da[di++ % dc];
|
|
if (x > len) {
|
|
x = len;
|
|
}
|
|
ctx[draw ? 'lineTo' : 'moveTo'](x, 0);
|
|
draw = !draw;
|
|
}
|
|
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Creates canvas element and initializes it via excanvas if necessary
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {CanvasElement} [canvasEl] optional canvas element to initialize;
|
|
* when not given, element is created implicitly
|
|
* @return {CanvasElement} initialized canvas element
|
|
*/
|
|
createCanvasElement: function(canvasEl) {
|
|
canvasEl || (canvasEl = fabric.document.createElement('canvas'));
|
|
//jscs:disable requireCamelCaseOrUpperCaseIdentifiers
|
|
if (!canvasEl.getContext && typeof G_vmlCanvasManager !== 'undefined') {
|
|
G_vmlCanvasManager.initElement(canvasEl);
|
|
}
|
|
//jscs:enable requireCamelCaseOrUpperCaseIdentifiers
|
|
return canvasEl;
|
|
},
|
|
|
|
/**
|
|
* Creates image element (works on client and node)
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @return {HTMLImageElement} HTML image element
|
|
*/
|
|
createImage: function() {
|
|
return fabric.isLikelyNode
|
|
? new (require('canvas').Image)()
|
|
: fabric.document.createElement('img');
|
|
},
|
|
|
|
/**
|
|
* Creates accessors (getXXX, setXXX) for a "class", based on "stateProperties" array
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Object} klass "Class" to create accessors for
|
|
*/
|
|
createAccessors: function(klass) {
|
|
var proto = klass.prototype;
|
|
|
|
for (var i = proto.stateProperties.length; i--; ) {
|
|
|
|
var propName = proto.stateProperties[i],
|
|
capitalizedPropName = propName.charAt(0).toUpperCase() + propName.slice(1),
|
|
setterName = 'set' + capitalizedPropName,
|
|
getterName = 'get' + capitalizedPropName;
|
|
|
|
// using `new Function` for better introspection
|
|
if (!proto[getterName]) {
|
|
proto[getterName] = (function(property) {
|
|
return new Function('return this.get("' + property + '")');
|
|
})(propName);
|
|
}
|
|
if (!proto[setterName]) {
|
|
proto[setterName] = (function(property) {
|
|
return new Function('value', 'return this.set("' + property + '", value)');
|
|
})(propName);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {fabric.Object} receiver Object implementing `clipTo` method
|
|
* @param {CanvasRenderingContext2D} ctx Context to clip
|
|
*/
|
|
clipContext: function(receiver, ctx) {
|
|
ctx.save();
|
|
ctx.beginPath();
|
|
receiver.clipTo(ctx);
|
|
ctx.clip();
|
|
},
|
|
|
|
/**
|
|
* Multiply matrix A by matrix B to nest transformations
|
|
* @static
|
|
* @memberOf fabric.util
|
|
* @param {Array} matrixA First transformMatrix
|
|
* @param {Array} matrixB Second transformMatrix
|
|
* @return {Array} The product of the two transform matrices
|
|
*/
|
|
multiplyTransformMatrices: function(matrixA, matrixB) {
|
|
// Matrix multiply matrixA * matrixB
|
|
var a = [
|
|
[matrixA[0], matrixA[2], matrixA[4]],
|
|
[matrixA[1], matrixA[3], matrixA[5]],
|
|
[0, 0, 1 ]
|
|
],
|
|
|
|
b = [
|
|
[matrixB[0], matrixB[2], matrixB[4]],
|
|
[matrixB[1], matrixB[3], matrixB[5]],
|
|
[0, 0, 1 ]
|
|
],
|
|
|
|
result = [];
|
|
|
|
for (var r = 0; r < 3; r++) {
|
|
result[r] = [];
|
|
for (var c = 0; c < 3; c++) {
|
|
var sum = 0;
|
|
for (var k = 0; k < 3; k++) {
|
|
sum += a[r][k] * b[k][c];
|
|
}
|
|
|
|
result[r][c] = sum;
|
|
}
|
|
}
|
|
|
|
return [
|
|
result[0][0],
|
|
result[1][0],
|
|
result[0][1],
|
|
result[1][1],
|
|
result[0][2],
|
|
result[1][2]
|
|
];
|
|
},
|
|
|
|
/**
|
|
* Returns string representation of function body
|
|
* @param {Function} fn Function to get body of
|
|
* @return {String} Function body
|
|
*/
|
|
getFunctionBody: function(fn) {
|
|
return (String(fn).match(/function[^{]*\{([\s\S]*)\}/) || {})[1];
|
|
},
|
|
|
|
/**
|
|
* Returns true if context has transparent pixel
|
|
* at specified location (taking tolerance into account)
|
|
* @param {CanvasRenderingContext2D} ctx context
|
|
* @param {Number} x x coordinate
|
|
* @param {Number} y y coordinate
|
|
* @param {Number} tolerance Tolerance
|
|
*/
|
|
isTransparent: function(ctx, x, y, tolerance) {
|
|
|
|
// If tolerance is > 0 adjust start coords to take into account.
|
|
// If moves off Canvas fix to 0
|
|
if (tolerance > 0) {
|
|
if (x > tolerance) {
|
|
x -= tolerance;
|
|
}
|
|
else {
|
|
x = 0;
|
|
}
|
|
if (y > tolerance) {
|
|
y -= tolerance;
|
|
}
|
|
else {
|
|
y = 0;
|
|
}
|
|
}
|
|
|
|
var _isTransparent = true,
|
|
imageData = ctx.getImageData(x, y, (tolerance * 2) || 1, (tolerance * 2) || 1);
|
|
|
|
// Split image data - for tolerance > 1, pixelDataSize = 4;
|
|
for (var i = 3, l = imageData.data.length; i < l; i += 4) {
|
|
var temp = imageData.data[i];
|
|
_isTransparent = temp <= 0;
|
|
if (_isTransparent === false) {
|
|
break; // Stop if colour found
|
|
}
|
|
}
|
|
|
|
imageData = null;
|
|
|
|
return _isTransparent;
|
|
}
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function() {
|
|
|
|
var arcToSegmentsCache = { },
|
|
segmentToBezierCache = { },
|
|
_join = Array.prototype.join;
|
|
|
|
/* Adapted from http://dxr.mozilla.org/mozilla-central/source/content/svg/content/src/nsSVGPathDataParser.cpp
|
|
* by Andrea Bogazzi code is under MPL. if you don't have a copy of the license you can take it here
|
|
* http://mozilla.org/MPL/2.0/
|
|
*/
|
|
function arcToSegments(toX, toY, rx, ry, large, sweep, rotateX) {
|
|
var argsString = _join.call(arguments);
|
|
if (arcToSegmentsCache[argsString]) {
|
|
return arcToSegmentsCache[argsString];
|
|
}
|
|
|
|
var PI = Math.PI, th = rotateX * (PI / 180),
|
|
sinTh = Math.sin(th),
|
|
cosTh = Math.cos(th),
|
|
fromX = 0, fromY = 0;
|
|
|
|
rx = Math.abs(rx);
|
|
ry = Math.abs(ry);
|
|
|
|
var px = -cosTh * toX - sinTh * toY,
|
|
py = -cosTh * toY + sinTh * toX,
|
|
rx2 = rx * rx, ry2 = ry * ry, py2 = py * py, px2 = px * px,
|
|
pl = 4 * rx2 * ry2 - rx2 * py2 - ry2 * px2,
|
|
root = 0;
|
|
|
|
if (pl < 0) {
|
|
var s = Math.sqrt(1 - 0.25 * pl/(rx2 * ry2));
|
|
rx *= s;
|
|
ry *= s;
|
|
}
|
|
else {
|
|
root = (large === sweep ? -0.5 : 0.5) *
|
|
Math.sqrt( pl /(rx2 * py2 + ry2 * px2));
|
|
}
|
|
|
|
var cx = root * rx * py / ry,
|
|
cy = -root * ry * px / rx,
|
|
cx1 = cosTh * cx - sinTh * cy + toX / 2,
|
|
cy1 = sinTh * cx + cosTh * cy + toY / 2,
|
|
mTheta = calcVectorAngle(1, 0, (px - cx) / rx, (py - cy) / ry),
|
|
dtheta = calcVectorAngle((px - cx) / rx, (py - cy) / ry, (-px - cx) / rx, (-py - cy) / ry);
|
|
|
|
if (sweep === 0 && dtheta > 0) {
|
|
dtheta -= 2 * PI;
|
|
}
|
|
else if (sweep === 1 && dtheta < 0) {
|
|
dtheta += 2 * PI;
|
|
}
|
|
|
|
// Convert into cubic bezier segments <= 90deg
|
|
var segments = Math.ceil(Math.abs(dtheta / (PI * 0.5))),
|
|
result = [], mDelta = dtheta / segments,
|
|
mT = 8 / 3 * Math.sin(mDelta / 4) * Math.sin(mDelta / 4) / Math.sin(mDelta / 2),
|
|
th3 = mTheta + mDelta;
|
|
|
|
for (var i = 0; i < segments; i++) {
|
|
result[i] = segmentToBezier(mTheta, th3, cosTh, sinTh, rx, ry, cx1, cy1, mT, fromX, fromY);
|
|
fromX = result[i][4];
|
|
fromY = result[i][5];
|
|
mTheta += mDelta;
|
|
th3 += mDelta;
|
|
}
|
|
arcToSegmentsCache[argsString] = result;
|
|
return result;
|
|
}
|
|
|
|
function segmentToBezier(th2, th3, cosTh, sinTh, rx, ry, cx1, cy1, mT, fromX, fromY) {
|
|
var argsString2 = _join.call(arguments);
|
|
if (segmentToBezierCache[argsString2]) {
|
|
return segmentToBezierCache[argsString2];
|
|
}
|
|
|
|
var costh2 = Math.cos(th2),
|
|
sinth2 = Math.sin(th2),
|
|
costh3 = Math.cos(th3),
|
|
sinth3 = Math.sin(th3),
|
|
toX = cosTh * rx * costh3 - sinTh * ry * sinth3 + cx1,
|
|
toY = sinTh * rx * costh3 + cosTh * ry * sinth3 + cy1,
|
|
cp1X = fromX + mT * ( - cosTh * rx * sinth2 - sinTh * ry * costh2),
|
|
cp1Y = fromY + mT * ( - sinTh * rx * sinth2 + cosTh * ry * costh2),
|
|
cp2X = toX + mT * ( cosTh * rx * sinth3 + sinTh * ry * costh3),
|
|
cp2Y = toY + mT * ( sinTh * rx * sinth3 - cosTh * ry * costh3);
|
|
|
|
segmentToBezierCache[argsString2] = [
|
|
cp1X, cp1Y,
|
|
cp2X, cp2Y,
|
|
toX, toY
|
|
];
|
|
return segmentToBezierCache[argsString2];
|
|
}
|
|
|
|
/*
|
|
* Private
|
|
*/
|
|
function calcVectorAngle(ux, uy, vx, vy) {
|
|
var ta = Math.atan2(uy, ux),
|
|
tb = Math.atan2(vy, vx);
|
|
if (tb >= ta) {
|
|
return tb - ta;
|
|
}
|
|
else {
|
|
return 2 * Math.PI - (ta - tb);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Draws arc
|
|
* @param {CanvasRenderingContext2D} ctx
|
|
* @param {Number} fx
|
|
* @param {Number} fy
|
|
* @param {Array} coords
|
|
*/
|
|
fabric.util.drawArc = function(ctx, fx, fy, coords) {
|
|
var rx = coords[0],
|
|
ry = coords[1],
|
|
rot = coords[2],
|
|
large = coords[3],
|
|
sweep = coords[4],
|
|
tx = coords[5],
|
|
ty = coords[6],
|
|
segs = [[ ], [ ], [ ], [ ]],
|
|
segsNorm = arcToSegments(tx - fx, ty - fy, rx, ry, large, sweep, rot);
|
|
|
|
for (var i = 0, len = segsNorm.length; i < len; i++) {
|
|
segs[i][0] = segsNorm[i][0] + fx;
|
|
segs[i][1] = segsNorm[i][1] + fy;
|
|
segs[i][2] = segsNorm[i][2] + fx;
|
|
segs[i][3] = segsNorm[i][3] + fy;
|
|
segs[i][4] = segsNorm[i][4] + fx;
|
|
segs[i][5] = segsNorm[i][5] + fy;
|
|
ctx.bezierCurveTo.apply(ctx, segs[i]);
|
|
}
|
|
};
|
|
})();
|
|
|
|
|
|
(function() {
|
|
|
|
var slice = Array.prototype.slice;
|
|
|
|
|
|
|
|
/**
|
|
* Invokes method on all items in a given array
|
|
* @memberOf fabric.util.array
|
|
* @param {Array} array Array to iterate over
|
|
* @param {String} method Name of a method to invoke
|
|
* @return {Array}
|
|
*/
|
|
function invoke(array, method) {
|
|
var args = slice.call(arguments, 2), result = [ ];
|
|
for (var i = 0, len = array.length; i < len; i++) {
|
|
result[i] = args.length ? array[i][method].apply(array[i], args) : array[i][method].call(array[i]);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Finds maximum value in array (not necessarily "first" one)
|
|
* @memberOf fabric.util.array
|
|
* @param {Array} array Array to iterate over
|
|
* @param {String} byProperty
|
|
* @return {Any}
|
|
*/
|
|
function max(array, byProperty) {
|
|
return find(array, byProperty, function(value1, value2) {
|
|
return value1 >= value2;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Finds minimum value in array (not necessarily "first" one)
|
|
* @memberOf fabric.util.array
|
|
* @param {Array} array Array to iterate over
|
|
* @param {String} byProperty
|
|
* @return {Any}
|
|
*/
|
|
function min(array, byProperty) {
|
|
return find(array, byProperty, function(value1, value2) {
|
|
return value1 < value2;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function find(array, byProperty, condition) {
|
|
if (!array || array.length === 0) {
|
|
return;
|
|
}
|
|
|
|
var i = array.length - 1,
|
|
result = byProperty ? array[i][byProperty] : array[i];
|
|
if (byProperty) {
|
|
while (i--) {
|
|
if (condition(array[i][byProperty], result)) {
|
|
result = array[i][byProperty];
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
while (i--) {
|
|
if (condition(array[i], result)) {
|
|
result = array[i];
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @namespace fabric.util.array
|
|
*/
|
|
fabric.util.array = {
|
|
invoke: invoke,
|
|
min: min,
|
|
max: max
|
|
};
|
|
|
|
})();
|
|
|
|
|
|
(function(){
|
|
|
|
/**
|
|
* Copies all enumerable properties of one object to another
|
|
* @memberOf fabric.util.object
|
|
* @param {Object} destination Where to copy to
|
|
* @param {Object} source Where to copy from
|
|
* @return {Object}
|
|
*/
|
|
function extend(destination, source) {
|
|
// JScript DontEnum bug is not taken care of
|
|
for (var property in source) {
|
|
destination[property] = source[property];
|
|
}
|
|
return destination;
|
|
}
|
|
|
|
/**
|
|
* Creates an empty object and copies all enumerable properties of another object to it
|
|
* @memberOf fabric.util.object
|
|
* @param {Object} object Object to clone
|
|
* @return {Object}
|
|
*/
|
|
function clone(object) {
|
|
return extend({ }, object);
|
|
}
|
|
|
|
/** @namespace fabric.util.object */
|
|
fabric.util.object = {
|
|
extend: extend,
|
|
clone: clone
|
|
};
|
|
|
|
})();
|
|
|
|
|
|
(function() {
|
|
|
|
|
|
|
|
/**
|
|
* Camelizes a string
|
|
* @memberOf fabric.util.string
|
|
* @param {String} string String to camelize
|
|
* @return {String} Camelized version of a string
|
|
*/
|
|
function camelize(string) {
|
|
return string.replace(/-+(.)?/g, function(match, character) {
|
|
return character ? character.toUpperCase() : '';
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Capitalizes a string
|
|
* @memberOf fabric.util.string
|
|
* @param {String} string String to capitalize
|
|
* @param {Boolean} [firstLetterOnly] If true only first letter is capitalized
|
|
* and other letters stay untouched, if false first letter is capitalized
|
|
* and other letters are converted to lowercase.
|
|
* @return {String} Capitalized version of a string
|
|
*/
|
|
function capitalize(string, firstLetterOnly) {
|
|
return string.charAt(0).toUpperCase() +
|
|
(firstLetterOnly ? string.slice(1) : string.slice(1).toLowerCase());
|
|
}
|
|
|
|
/**
|
|
* Escapes XML in a string
|
|
* @memberOf fabric.util.string
|
|
* @param {String} string String to escape
|
|
* @return {String} Escaped version of a string
|
|
*/
|
|
function escapeXml(string) {
|
|
return string.replace(/&/g, '&')
|
|
.replace(/"/g, '"')
|
|
.replace(/'/g, ''')
|
|
.replace(/</g, '<')
|
|
.replace(/>/g, '>');
|
|
}
|
|
|
|
/**
|
|
* String utilities
|
|
* @namespace fabric.util.string
|
|
*/
|
|
fabric.util.string = {
|
|
camelize: camelize,
|
|
capitalize: capitalize,
|
|
escapeXml: escapeXml
|
|
};
|
|
}());
|
|
|
|
|
|
|
|
|
|
|
|
(function() {
|
|
|
|
var slice = Array.prototype.slice, emptyFunction = function() { },
|
|
|
|
IS_DONTENUM_BUGGY = (function(){
|
|
for (var p in { toString: 1 }) {
|
|
if (p === 'toString') {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
})(),
|
|
|
|
/** @ignore */
|
|
addMethods = function(klass, source, parent) {
|
|
for (var property in source) {
|
|
|
|
if (property in klass.prototype &&
|
|
typeof klass.prototype[property] === 'function' &&
|
|
(source[property] + '').indexOf('callSuper') > -1) {
|
|
|
|
klass.prototype[property] = (function(property) {
|
|
return function() {
|
|
|
|
var superclass = this.constructor.superclass;
|
|
this.constructor.superclass = parent;
|
|
var returnValue = source[property].apply(this, arguments);
|
|
this.constructor.superclass = superclass;
|
|
|
|
if (property !== 'initialize') {
|
|
return returnValue;
|
|
}
|
|
};
|
|
})(property);
|
|
}
|
|
else {
|
|
klass.prototype[property] = source[property];
|
|
}
|
|
|
|
if (IS_DONTENUM_BUGGY) {
|
|
if (source.toString !== Object.prototype.toString) {
|
|
klass.prototype.toString = source.toString;
|
|
}
|
|
if (source.valueOf !== Object.prototype.valueOf) {
|
|
klass.prototype.valueOf = source.valueOf;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
function Subclass() { }
|
|
|
|
function callSuper(methodName) {
|
|
var fn = this.constructor.superclass.prototype[methodName];
|
|
return (arguments.length > 1)
|
|
? fn.apply(this, slice.call(arguments, 1))
|
|
: fn.call(this);
|
|
}
|
|
|
|
/**
|
|
* Helper for creation of "classes".
|
|
* @memberOf fabric.util
|
|
* @param {Function} [parent] optional "Class" to inherit from
|
|
* @param {Object} [properties] Properties shared by all instances of this class
|
|
* (be careful modifying objects defined here as this would affect all instances)
|
|
*/
|
|
function createClass() {
|
|
var parent = null,
|
|
properties = slice.call(arguments, 0);
|
|
|
|
if (typeof properties[0] === 'function') {
|
|
parent = properties.shift();
|
|
}
|
|
function klass() {
|
|
this.initialize.apply(this, arguments);
|
|
}
|
|
|
|
klass.superclass = parent;
|
|
klass.subclasses = [ ];
|
|
|
|
if (parent) {
|
|
Subclass.prototype = parent.prototype;
|
|
klass.prototype = new Subclass();
|
|
parent.subclasses.push(klass);
|
|
}
|
|
for (var i = 0, length = properties.length; i < length; i++) {
|
|
addMethods(klass, properties[i], parent);
|
|
}
|
|
if (!klass.prototype.initialize) {
|
|
klass.prototype.initialize = emptyFunction;
|
|
}
|
|
klass.prototype.constructor = klass;
|
|
klass.prototype.callSuper = callSuper;
|
|
return klass;
|
|
}
|
|
|
|
fabric.util.createClass = createClass;
|
|
})();
|
|
|
|
|
|
(function () {
|
|
|
|
var unknown = 'unknown';
|
|
|
|
/* EVENT HANDLING */
|
|
|
|
function areHostMethods(object) {
|
|
var methodNames = Array.prototype.slice.call(arguments, 1),
|
|
t, i, len = methodNames.length;
|
|
for (i = 0; i < len; i++) {
|
|
t = typeof object[methodNames[i]];
|
|
if (!(/^(?:function|object|unknown)$/).test(t)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/** @ignore */
|
|
var getElement,
|
|
setElement,
|
|
getUniqueId = (function () {
|
|
var uid = 0;
|
|
return function (element) {
|
|
return element.__uniqueID || (element.__uniqueID = 'uniqueID__' + uid++);
|
|
};
|
|
})();
|
|
|
|
(function () {
|
|
var elements = { };
|
|
/** @ignore */
|
|
getElement = function (uid) {
|
|
return elements[uid];
|
|
};
|
|
/** @ignore */
|
|
setElement = function (uid, element) {
|
|
elements[uid] = element;
|
|
};
|
|
})();
|
|
|
|
function createListener(uid, handler) {
|
|
return {
|
|
handler: handler,
|
|
wrappedHandler: createWrappedHandler(uid, handler)
|
|
};
|
|
}
|
|
|
|
function createWrappedHandler(uid, handler) {
|
|
return function (e) {
|
|
handler.call(getElement(uid), e || fabric.window.event);
|
|
};
|
|
}
|
|
|
|
function createDispatcher(uid, eventName) {
|
|
return function (e) {
|
|
if (handlers[uid] && handlers[uid][eventName]) {
|
|
var handlersForEvent = handlers[uid][eventName];
|
|
for (var i = 0, len = handlersForEvent.length; i < len; i++) {
|
|
handlersForEvent[i].call(this, e || fabric.window.event);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
var shouldUseAddListenerRemoveListener = (
|
|
areHostMethods(fabric.document.documentElement, 'addEventListener', 'removeEventListener') &&
|
|
areHostMethods(fabric.window, 'addEventListener', 'removeEventListener')),
|
|
|
|
shouldUseAttachEventDetachEvent = (
|
|
areHostMethods(fabric.document.documentElement, 'attachEvent', 'detachEvent') &&
|
|
areHostMethods(fabric.window, 'attachEvent', 'detachEvent')),
|
|
|
|
// IE branch
|
|
listeners = { },
|
|
|
|
// DOM L0 branch
|
|
handlers = { },
|
|
|
|
addListener, removeListener;
|
|
|
|
if (shouldUseAddListenerRemoveListener) {
|
|
/** @ignore */
|
|
addListener = function (element, eventName, handler) {
|
|
element.addEventListener(eventName, handler, false);
|
|
};
|
|
/** @ignore */
|
|
removeListener = function (element, eventName, handler) {
|
|
element.removeEventListener(eventName, handler, false);
|
|
};
|
|
}
|
|
|
|
else if (shouldUseAttachEventDetachEvent) {
|
|
/** @ignore */
|
|
addListener = function (element, eventName, handler) {
|
|
var uid = getUniqueId(element);
|
|
setElement(uid, element);
|
|
if (!listeners[uid]) {
|
|
listeners[uid] = { };
|
|
}
|
|
if (!listeners[uid][eventName]) {
|
|
listeners[uid][eventName] = [ ];
|
|
|
|
}
|
|
var listener = createListener(uid, handler);
|
|
listeners[uid][eventName].push(listener);
|
|
element.attachEvent('on' + eventName, listener.wrappedHandler);
|
|
};
|
|
/** @ignore */
|
|
removeListener = function (element, eventName, handler) {
|
|
var uid = getUniqueId(element), listener;
|
|
if (listeners[uid] && listeners[uid][eventName]) {
|
|
for (var i = 0, len = listeners[uid][eventName].length; i < len; i++) {
|
|
listener = listeners[uid][eventName][i];
|
|
if (listener && listener.handler === handler) {
|
|
element.detachEvent('on' + eventName, listener.wrappedHandler);
|
|
listeners[uid][eventName][i] = null;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
}
|
|
else {
|
|
/** @ignore */
|
|
addListener = function (element, eventName, handler) {
|
|
var uid = getUniqueId(element);
|
|
if (!handlers[uid]) {
|
|
handlers[uid] = { };
|
|
}
|
|
if (!handlers[uid][eventName]) {
|
|
handlers[uid][eventName] = [ ];
|
|
var existingHandler = element['on' + eventName];
|
|
if (existingHandler) {
|
|
handlers[uid][eventName].push(existingHandler);
|
|
}
|
|
element['on' + eventName] = createDispatcher(uid, eventName);
|
|
}
|
|
handlers[uid][eventName].push(handler);
|
|
};
|
|
/** @ignore */
|
|
removeListener = function (element, eventName, handler) {
|
|
var uid = getUniqueId(element);
|
|
if (handlers[uid] && handlers[uid][eventName]) {
|
|
var handlersForEvent = handlers[uid][eventName];
|
|
for (var i = 0, len = handlersForEvent.length; i < len; i++) {
|
|
if (handlersForEvent[i] === handler) {
|
|
handlersForEvent.splice(i, 1);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Adds an event listener to an element
|
|
* @function
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element
|
|
* @param {String} eventName
|
|
* @param {Function} handler
|
|
*/
|
|
fabric.util.addListener = addListener;
|
|
|
|
/**
|
|
* Removes an event listener from an element
|
|
* @function
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element
|
|
* @param {String} eventName
|
|
* @param {Function} handler
|
|
*/
|
|
fabric.util.removeListener = removeListener;
|
|
|
|
/**
|
|
* Cross-browser wrapper for getting event's coordinates
|
|
* @memberOf fabric.util
|
|
* @param {Event} event Event object
|
|
* @param {HTMLCanvasElement} upperCanvasEl <canvas> element on which object selection is drawn
|
|
*/
|
|
function getPointer(event, upperCanvasEl) {
|
|
event || (event = fabric.window.event);
|
|
|
|
var element = event.target ||
|
|
(typeof event.srcElement !== unknown ? event.srcElement : null),
|
|
|
|
scroll = fabric.util.getScrollLeftTop(element, upperCanvasEl);
|
|
|
|
return {
|
|
x: pointerX(event) + scroll.left,
|
|
y: pointerY(event) + scroll.top
|
|
};
|
|
}
|
|
|
|
var pointerX = function(event) {
|
|
// looks like in IE (<9) clientX at certain point (apparently when mouseup fires on VML element)
|
|
// is represented as COM object, with all the consequences, like "unknown" type and error on [[Get]]
|
|
// need to investigate later
|
|
return (typeof event.clientX !== unknown ? event.clientX : 0);
|
|
},
|
|
|
|
pointerY = function(event) {
|
|
return (typeof event.clientY !== unknown ? event.clientY : 0);
|
|
};
|
|
|
|
function _getPointer(event, pageProp, clientProp) {
|
|
var touchProp = event.type === 'touchend' ? 'changedTouches' : 'touches';
|
|
|
|
return (event[touchProp] && event[touchProp][0]
|
|
? (event[touchProp][0][pageProp] - (event[touchProp][0][pageProp] - event[touchProp][0][clientProp]))
|
|
|| event[clientProp]
|
|
: event[clientProp]);
|
|
}
|
|
|
|
if (fabric.isTouchSupported) {
|
|
pointerX = function(event) {
|
|
return _getPointer(event, 'pageX', 'clientX');
|
|
};
|
|
pointerY = function(event) {
|
|
return _getPointer(event, 'pageY', 'clientY');
|
|
};
|
|
}
|
|
|
|
fabric.util.getPointer = getPointer;
|
|
|
|
fabric.util.object.extend(fabric.util, fabric.Observable);
|
|
|
|
})();
|
|
|
|
|
|
(function () {
|
|
|
|
/**
|
|
* Cross-browser wrapper for setting element's style
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element
|
|
* @param {Object} styles
|
|
* @return {HTMLElement} Element that was passed as a first argument
|
|
*/
|
|
function setStyle(element, styles) {
|
|
var elementStyle = element.style;
|
|
if (!elementStyle) {
|
|
return element;
|
|
}
|
|
if (typeof styles === 'string') {
|
|
element.style.cssText += ';' + styles;
|
|
return styles.indexOf('opacity') > -1
|
|
? setOpacity(element, styles.match(/opacity:\s*(\d?\.?\d*)/)[1])
|
|
: element;
|
|
}
|
|
for (var property in styles) {
|
|
if (property === 'opacity') {
|
|
setOpacity(element, styles[property]);
|
|
}
|
|
else {
|
|
var normalizedProperty = (property === 'float' || property === 'cssFloat')
|
|
? (typeof elementStyle.styleFloat === 'undefined' ? 'cssFloat' : 'styleFloat')
|
|
: property;
|
|
elementStyle[normalizedProperty] = styles[property];
|
|
}
|
|
}
|
|
return element;
|
|
}
|
|
|
|
var parseEl = fabric.document.createElement('div'),
|
|
supportsOpacity = typeof parseEl.style.opacity === 'string',
|
|
supportsFilters = typeof parseEl.style.filter === 'string',
|
|
reOpacity = /alpha\s*\(\s*opacity\s*=\s*([^\)]+)\)/,
|
|
|
|
/** @ignore */
|
|
setOpacity = function (element) { return element; };
|
|
|
|
if (supportsOpacity) {
|
|
/** @ignore */
|
|
setOpacity = function(element, value) {
|
|
element.style.opacity = value;
|
|
return element;
|
|
};
|
|
}
|
|
else if (supportsFilters) {
|
|
/** @ignore */
|
|
setOpacity = function(element, value) {
|
|
var es = element.style;
|
|
if (element.currentStyle && !element.currentStyle.hasLayout) {
|
|
es.zoom = 1;
|
|
}
|
|
if (reOpacity.test(es.filter)) {
|
|
value = value >= 0.9999 ? '' : ('alpha(opacity=' + (value * 100) + ')');
|
|
es.filter = es.filter.replace(reOpacity, value);
|
|
}
|
|
else {
|
|
es.filter += ' alpha(opacity=' + (value * 100) + ')';
|
|
}
|
|
return element;
|
|
};
|
|
}
|
|
|
|
fabric.util.setStyle = setStyle;
|
|
|
|
})();
|
|
|
|
|
|
(function() {
|
|
|
|
var _slice = Array.prototype.slice;
|
|
|
|
/**
|
|
* Takes id and returns an element with that id (if one exists in a document)
|
|
* @memberOf fabric.util
|
|
* @param {String|HTMLElement} id
|
|
* @return {HTMLElement|null}
|
|
*/
|
|
function getById(id) {
|
|
return typeof id === 'string' ? fabric.document.getElementById(id) : id;
|
|
}
|
|
|
|
var sliceCanConvertNodelists,
|
|
/**
|
|
* Converts an array-like object (e.g. arguments or NodeList) to an array
|
|
* @memberOf fabric.util
|
|
* @param {Object} arrayLike
|
|
* @return {Array}
|
|
*/
|
|
toArray = function(arrayLike) {
|
|
return _slice.call(arrayLike, 0);
|
|
};
|
|
|
|
try {
|
|
sliceCanConvertNodelists = toArray(fabric.document.childNodes) instanceof Array;
|
|
}
|
|
catch (err) { }
|
|
|
|
if (!sliceCanConvertNodelists) {
|
|
toArray = function(arrayLike) {
|
|
var arr = new Array(arrayLike.length), i = arrayLike.length;
|
|
while (i--) {
|
|
arr[i] = arrayLike[i];
|
|
}
|
|
return arr;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates specified element with specified attributes
|
|
* @memberOf fabric.util
|
|
* @param {String} tagName Type of an element to create
|
|
* @param {Object} [attributes] Attributes to set on an element
|
|
* @return {HTMLElement} Newly created element
|
|
*/
|
|
function makeElement(tagName, attributes) {
|
|
var el = fabric.document.createElement(tagName);
|
|
for (var prop in attributes) {
|
|
if (prop === 'class') {
|
|
el.className = attributes[prop];
|
|
}
|
|
else if (prop === 'for') {
|
|
el.htmlFor = attributes[prop];
|
|
}
|
|
else {
|
|
el.setAttribute(prop, attributes[prop]);
|
|
}
|
|
}
|
|
return el;
|
|
}
|
|
|
|
/**
|
|
* Adds class to an element
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element Element to add class to
|
|
* @param {String} className Class to add to an element
|
|
*/
|
|
function addClass(element, className) {
|
|
if (element && (' ' + element.className + ' ').indexOf(' ' + className + ' ') === -1) {
|
|
element.className += (element.className ? ' ' : '') + className;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Wraps element with another element
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element Element to wrap
|
|
* @param {HTMLElement|String} wrapper Element to wrap with
|
|
* @param {Object} [attributes] Attributes to set on a wrapper
|
|
* @return {HTMLElement} wrapper
|
|
*/
|
|
function wrapElement(element, wrapper, attributes) {
|
|
if (typeof wrapper === 'string') {
|
|
wrapper = makeElement(wrapper, attributes);
|
|
}
|
|
if (element.parentNode) {
|
|
element.parentNode.replaceChild(wrapper, element);
|
|
}
|
|
wrapper.appendChild(element);
|
|
return wrapper;
|
|
}
|
|
|
|
/**
|
|
* Returns element scroll offsets
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element Element to operate on
|
|
* @param {HTMLElement} upperCanvasEl Upper canvas element
|
|
* @return {Object} Object with left/top values
|
|
*/
|
|
function getScrollLeftTop(element, upperCanvasEl) {
|
|
|
|
var firstFixedAncestor,
|
|
origElement,
|
|
left = 0,
|
|
top = 0,
|
|
docElement = fabric.document.documentElement,
|
|
body = fabric.document.body || {
|
|
scrollLeft: 0, scrollTop: 0
|
|
};
|
|
|
|
origElement = element;
|
|
|
|
while (element && element.parentNode && !firstFixedAncestor) {
|
|
|
|
element = element.parentNode;
|
|
|
|
if (element !== fabric.document &&
|
|
fabric.util.getElementStyle(element, 'position') === 'fixed') {
|
|
firstFixedAncestor = element;
|
|
}
|
|
|
|
if (element !== fabric.document &&
|
|
origElement !== upperCanvasEl &&
|
|
fabric.util.getElementStyle(element, 'position') === 'absolute') {
|
|
left = 0;
|
|
top = 0;
|
|
}
|
|
else if (element === fabric.document) {
|
|
left = body.scrollLeft || docElement.scrollLeft || 0;
|
|
top = body.scrollTop || docElement.scrollTop || 0;
|
|
}
|
|
else {
|
|
left += element.scrollLeft || 0;
|
|
top += element.scrollTop || 0;
|
|
}
|
|
}
|
|
|
|
return { left: left, top: top };
|
|
}
|
|
|
|
/**
|
|
* Returns offset for a given element
|
|
* @function
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element Element to get offset for
|
|
* @return {Object} Object with "left" and "top" properties
|
|
*/
|
|
function getElementOffset(element) {
|
|
var docElem,
|
|
doc = element && element.ownerDocument,
|
|
box = { left: 0, top: 0 },
|
|
offset = { left: 0, top: 0 },
|
|
scrollLeftTop,
|
|
offsetAttributes = {
|
|
borderLeftWidth: 'left',
|
|
borderTopWidth: 'top',
|
|
paddingLeft: 'left',
|
|
paddingTop: 'top'
|
|
};
|
|
|
|
if (!doc) {
|
|
return { left: 0, top: 0 };
|
|
}
|
|
|
|
for (var attr in offsetAttributes) {
|
|
offset[offsetAttributes[attr]] += parseInt(getElementStyle(element, attr), 10) || 0;
|
|
}
|
|
|
|
docElem = doc.documentElement;
|
|
if ( typeof element.getBoundingClientRect !== 'undefined' ) {
|
|
box = element.getBoundingClientRect();
|
|
}
|
|
|
|
scrollLeftTop = fabric.util.getScrollLeftTop(element, null);
|
|
|
|
return {
|
|
left: box.left + scrollLeftTop.left - (docElem.clientLeft || 0) + offset.left,
|
|
top: box.top + scrollLeftTop.top - (docElem.clientTop || 0) + offset.top
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Returns style attribute value of a given element
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element Element to get style attribute for
|
|
* @param {String} attr Style attribute to get for element
|
|
* @return {String} Style attribute value of the given element.
|
|
*/
|
|
var getElementStyle;
|
|
if (fabric.document.defaultView && fabric.document.defaultView.getComputedStyle) {
|
|
getElementStyle = function(element, attr) {
|
|
return fabric.document.defaultView.getComputedStyle(element, null)[attr];
|
|
};
|
|
}
|
|
else {
|
|
getElementStyle = function(element, attr) {
|
|
var value = element.style[attr];
|
|
if (!value && element.currentStyle) {
|
|
value = element.currentStyle[attr];
|
|
}
|
|
return value;
|
|
};
|
|
}
|
|
|
|
(function () {
|
|
var style = fabric.document.documentElement.style,
|
|
selectProp = 'userSelect' in style
|
|
? 'userSelect'
|
|
: 'MozUserSelect' in style
|
|
? 'MozUserSelect'
|
|
: 'WebkitUserSelect' in style
|
|
? 'WebkitUserSelect'
|
|
: 'KhtmlUserSelect' in style
|
|
? 'KhtmlUserSelect'
|
|
: '';
|
|
|
|
/**
|
|
* Makes element unselectable
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element Element to make unselectable
|
|
* @return {HTMLElement} Element that was passed in
|
|
*/
|
|
function makeElementUnselectable(element) {
|
|
if (typeof element.onselectstart !== 'undefined') {
|
|
element.onselectstart = fabric.util.falseFunction;
|
|
}
|
|
if (selectProp) {
|
|
element.style[selectProp] = 'none';
|
|
}
|
|
else if (typeof element.unselectable === 'string') {
|
|
element.unselectable = 'on';
|
|
}
|
|
return element;
|
|
}
|
|
|
|
/**
|
|
* Makes element selectable
|
|
* @memberOf fabric.util
|
|
* @param {HTMLElement} element Element to make selectable
|
|
* @return {HTMLElement} Element that was passed in
|
|
*/
|
|
function makeElementSelectable(element) {
|
|
if (typeof element.onselectstart !== 'undefined') {
|
|
element.onselectstart = null;
|
|
}
|
|
if (selectProp) {
|
|
element.style[selectProp] = '';
|
|
}
|
|
else if (typeof element.unselectable === 'string') {
|
|
element.unselectable = '';
|
|
}
|
|
return element;
|
|
}
|
|
|
|
fabric.util.makeElementUnselectable = makeElementUnselectable;
|
|
fabric.util.makeElementSelectable = makeElementSelectable;
|
|
})();
|
|
|
|
(function() {
|
|
|
|
/**
|
|
* Inserts a script element with a given url into a document; invokes callback, when that script is finished loading
|
|
* @memberOf fabric.util
|
|
* @param {String} url URL of a script to load
|
|
* @param {Function} callback Callback to execute when script is finished loading
|
|
*/
|
|
function getScript(url, callback) {
|
|
var headEl = fabric.document.getElementsByTagName('head')[0],
|
|
scriptEl = fabric.document.createElement('script'),
|
|
loading = true;
|
|
|
|
/** @ignore */
|
|
scriptEl.onload = /** @ignore */ scriptEl.onreadystatechange = function(e) {
|
|
if (loading) {
|
|
if (typeof this.readyState === 'string' &&
|
|
this.readyState !== 'loaded' &&
|
|
this.readyState !== 'complete') {
|
|
return;
|
|
}
|
|
loading = false;
|
|
callback(e || fabric.window.event);
|
|
scriptEl = scriptEl.onload = scriptEl.onreadystatechange = null;
|
|
}
|
|
};
|
|
scriptEl.src = url;
|
|
headEl.appendChild(scriptEl);
|
|
// causes issue in Opera
|
|
// headEl.removeChild(scriptEl);
|
|
}
|
|
|
|
fabric.util.getScript = getScript;
|
|
})();
|
|
|
|
fabric.util.getById = getById;
|
|
fabric.util.toArray = toArray;
|
|
fabric.util.makeElement = makeElement;
|
|
fabric.util.addClass = addClass;
|
|
fabric.util.wrapElement = wrapElement;
|
|
fabric.util.getScrollLeftTop = getScrollLeftTop;
|
|
fabric.util.getElementOffset = getElementOffset;
|
|
fabric.util.getElementStyle = getElementStyle;
|
|
|
|
})();
|
|
|
|
|
|
(function(){
|
|
|
|
function addParamToUrl(url, param) {
|
|
return url + (/\?/.test(url) ? '&' : '?') + param;
|
|
}
|
|
|
|
var makeXHR = (function() {
|
|
var factories = [
|
|
function() { return new ActiveXObject('Microsoft.XMLHTTP'); },
|
|
function() { return new ActiveXObject('Msxml2.XMLHTTP'); },
|
|
function() { return new ActiveXObject('Msxml2.XMLHTTP.3.0'); },
|
|
function() { return new XMLHttpRequest(); }
|
|
];
|
|
for (var i = factories.length; i--; ) {
|
|
try {
|
|
var req = factories[i]();
|
|
if (req) {
|
|
return factories[i];
|
|
}
|
|
}
|
|
catch (err) { }
|
|
}
|
|
})();
|
|
|
|
function emptyFn() { }
|
|
|
|
/**
|
|
* Cross-browser abstraction for sending XMLHttpRequest
|
|
* @memberOf fabric.util
|
|
* @param {String} url URL to send XMLHttpRequest to
|
|
* @param {Object} [options] Options object
|
|
* @param {String} [options.method="GET"]
|
|
* @param {Function} options.onComplete Callback to invoke when request is completed
|
|
* @return {XMLHttpRequest} request
|
|
*/
|
|
function request(url, options) {
|
|
|
|
options || (options = { });
|
|
|
|
var method = options.method ? options.method.toUpperCase() : 'GET',
|
|
onComplete = options.onComplete || function() { },
|
|
xhr = makeXHR(),
|
|
body;
|
|
|
|
/** @ignore */
|
|
xhr.onreadystatechange = function() {
|
|
if (xhr.readyState === 4) {
|
|
onComplete(xhr);
|
|
xhr.onreadystatechange = emptyFn;
|
|
}
|
|
};
|
|
|
|
if (method === 'GET') {
|
|
body = null;
|
|
if (typeof options.parameters === 'string') {
|
|
url = addParamToUrl(url, options.parameters);
|
|
}
|
|
}
|
|
|
|
xhr.open(method, url, true);
|
|
|
|
if (method === 'POST' || method === 'PUT') {
|
|
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
|
|
}
|
|
|
|
xhr.send(body);
|
|
return xhr;
|
|
}
|
|
|
|
fabric.util.request = request;
|
|
})();
|
|
|
|
|
|
/**
|
|
* Wrapper around `console.log` (when available)
|
|
* @param {Any} [values] Values to log
|
|
*/
|
|
fabric.log = function() { };
|
|
|
|
/**
|
|
* Wrapper around `console.warn` (when available)
|
|
* @param {Any} [values] Values to log as a warning
|
|
*/
|
|
fabric.warn = function() { };
|
|
|
|
if (typeof console !== 'undefined') {
|
|
['log', 'warn'].forEach(function(methodName) {
|
|
if (typeof console[methodName] !== 'undefined' && console[methodName].apply) {
|
|
fabric[methodName] = function() {
|
|
return console[methodName].apply(console, arguments);
|
|
};
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
/**
|
|
* @name fabric
|
|
* @namespace
|
|
*/
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend,
|
|
capitalize = fabric.util.string.capitalize,
|
|
clone = fabric.util.object.clone,
|
|
toFixed = fabric.util.toFixed,
|
|
parseUnit = fabric.util.parseUnit,
|
|
multiplyTransformMatrices = fabric.util.multiplyTransformMatrices,
|
|
|
|
attributesMap = {
|
|
cx: 'left',
|
|
x: 'left',
|
|
r: 'radius',
|
|
cy: 'top',
|
|
y: 'top',
|
|
display: 'visible',
|
|
visibility: 'visible',
|
|
transform: 'transformMatrix',
|
|
'fill-opacity': 'fillOpacity',
|
|
'fill-rule': 'fillRule',
|
|
'font-family': 'fontFamily',
|
|
'font-size': 'fontSize',
|
|
'font-style': 'fontStyle',
|
|
'font-weight': 'fontWeight',
|
|
'stroke-dasharray': 'strokeDashArray',
|
|
'stroke-linecap': 'strokeLineCap',
|
|
'stroke-linejoin': 'strokeLineJoin',
|
|
'stroke-miterlimit': 'strokeMiterLimit',
|
|
'stroke-opacity': 'strokeOpacity',
|
|
'stroke-width': 'strokeWidth',
|
|
'text-decoration': 'textDecoration',
|
|
'text-anchor': 'originX'
|
|
},
|
|
|
|
colorAttributes = {
|
|
stroke: 'strokeOpacity',
|
|
fill: 'fillOpacity'
|
|
};
|
|
|
|
function normalizeAttr(attr) {
|
|
// transform attribute names
|
|
if (attr in attributesMap) {
|
|
return attributesMap[attr];
|
|
}
|
|
return attr;
|
|
}
|
|
|
|
function normalizeValue(attr, value, parentAttributes) {
|
|
var isArray = Object.prototype.toString.call(value) === '[object Array]',
|
|
parsed;
|
|
|
|
if ((attr === 'fill' || attr === 'stroke') && value === 'none') {
|
|
value = '';
|
|
}
|
|
else if (attr === 'fillRule') {
|
|
value = (value === 'evenodd') ? 'destination-over' : value;
|
|
}
|
|
else if (attr === 'strokeDashArray') {
|
|
value = value.replace(/,/g, ' ').split(/\s+/).map(function(n) {
|
|
return parseInt(n);
|
|
});
|
|
}
|
|
else if (attr === 'transformMatrix') {
|
|
if (parentAttributes && parentAttributes.transformMatrix) {
|
|
value = multiplyTransformMatrices(
|
|
parentAttributes.transformMatrix, fabric.parseTransformAttribute(value));
|
|
}
|
|
else {
|
|
value = fabric.parseTransformAttribute(value);
|
|
}
|
|
}
|
|
else if (attr === 'visible') {
|
|
value = (value === 'none' || value === 'hidden') ? false : true;
|
|
// display=none on parent element always takes precedence over child element
|
|
if (parentAttributes && parentAttributes.visible === false) {
|
|
value = false;
|
|
}
|
|
}
|
|
else if (attr === 'originX' /* text-anchor */) {
|
|
value = value === 'start' ? 'left' : value === 'end' ? 'right' : 'center';
|
|
}
|
|
else {
|
|
parsed = isArray ? value.map(parseUnit) : parseUnit(value);
|
|
}
|
|
|
|
return (!isArray && isNaN(parsed) ? value : parsed);
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} attributes Array of attributes to parse
|
|
*/
|
|
function _setStrokeFillOpacity(attributes) {
|
|
for (var attr in colorAttributes) {
|
|
|
|
if (!attributes[attr] || typeof attributes[colorAttributes[attr]] === 'undefined') {
|
|
continue;
|
|
}
|
|
|
|
if (attributes[attr].indexOf('url(') === 0) {
|
|
continue;
|
|
}
|
|
|
|
var color = new fabric.Color(attributes[attr]);
|
|
attributes[attr] = color.setAlpha(toFixed(color.getAlpha() * attributes[colorAttributes[attr]], 2)).toRgba();
|
|
}
|
|
return attributes;
|
|
}
|
|
|
|
/**
|
|
* Parses "transform" attribute, returning an array of values
|
|
* @static
|
|
* @function
|
|
* @memberOf fabric
|
|
* @param {String} attributeValue String containing attribute value
|
|
* @return {Array} Array of 6 elements representing transformation matrix
|
|
*/
|
|
fabric.parseTransformAttribute = (function() {
|
|
function rotateMatrix(matrix, args) {
|
|
var angle = args[0];
|
|
|
|
matrix[0] = Math.cos(angle);
|
|
matrix[1] = Math.sin(angle);
|
|
matrix[2] = -Math.sin(angle);
|
|
matrix[3] = Math.cos(angle);
|
|
}
|
|
|
|
function scaleMatrix(matrix, args) {
|
|
var multiplierX = args[0],
|
|
multiplierY = (args.length === 2) ? args[1] : args[0];
|
|
|
|
matrix[0] = multiplierX;
|
|
matrix[3] = multiplierY;
|
|
}
|
|
|
|
function skewXMatrix(matrix, args) {
|
|
matrix[2] = args[0];
|
|
}
|
|
|
|
function skewYMatrix(matrix, args) {
|
|
matrix[1] = args[0];
|
|
}
|
|
|
|
function translateMatrix(matrix, args) {
|
|
matrix[4] = args[0];
|
|
if (args.length === 2) {
|
|
matrix[5] = args[1];
|
|
}
|
|
}
|
|
|
|
// identity matrix
|
|
var iMatrix = [
|
|
1, // a
|
|
0, // b
|
|
0, // c
|
|
1, // d
|
|
0, // e
|
|
0 // f
|
|
],
|
|
|
|
// == begin transform regexp
|
|
number = '(?:[-+]?(?:\\d+|\\d*\\.\\d+)(?:e[-+]?\\d+)?)',
|
|
|
|
commaWsp = '(?:\\s+,?\\s*|,\\s*)',
|
|
|
|
skewX = '(?:(skewX)\\s*\\(\\s*(' + number + ')\\s*\\))',
|
|
|
|
skewY = '(?:(skewY)\\s*\\(\\s*(' + number + ')\\s*\\))',
|
|
|
|
rotate = '(?:(rotate)\\s*\\(\\s*(' + number + ')(?:' +
|
|
commaWsp + '(' + number + ')' +
|
|
commaWsp + '(' + number + '))?\\s*\\))',
|
|
|
|
scale = '(?:(scale)\\s*\\(\\s*(' + number + ')(?:' +
|
|
commaWsp + '(' + number + '))?\\s*\\))',
|
|
|
|
translate = '(?:(translate)\\s*\\(\\s*(' + number + ')(?:' +
|
|
commaWsp + '(' + number + '))?\\s*\\))',
|
|
|
|
matrix = '(?:(matrix)\\s*\\(\\s*' +
|
|
'(' + number + ')' + commaWsp +
|
|
'(' + number + ')' + commaWsp +
|
|
'(' + number + ')' + commaWsp +
|
|
'(' + number + ')' + commaWsp +
|
|
'(' + number + ')' + commaWsp +
|
|
'(' + number + ')' +
|
|
'\\s*\\))',
|
|
|
|
transform = '(?:' +
|
|
matrix + '|' +
|
|
translate + '|' +
|
|
scale + '|' +
|
|
rotate + '|' +
|
|
skewX + '|' +
|
|
skewY +
|
|
')',
|
|
|
|
transforms = '(?:' + transform + '(?:' + commaWsp + transform + ')*' + ')',
|
|
|
|
transformList = '^\\s*(?:' + transforms + '?)\\s*$',
|
|
|
|
// http://www.w3.org/TR/SVG/coords.html#TransformAttribute
|
|
reTransformList = new RegExp(transformList),
|
|
// == end transform regexp
|
|
|
|
reTransform = new RegExp(transform, 'g');
|
|
|
|
return function(attributeValue) {
|
|
|
|
// start with identity matrix
|
|
var matrix = iMatrix.concat(),
|
|
matrices = [ ];
|
|
|
|
// return if no argument was given or
|
|
// an argument does not match transform attribute regexp
|
|
if (!attributeValue || (attributeValue && !reTransformList.test(attributeValue))) {
|
|
return matrix;
|
|
}
|
|
|
|
attributeValue.replace(reTransform, function(match) {
|
|
|
|
var m = new RegExp(transform).exec(match).filter(function (match) {
|
|
return (match !== '' && match != null);
|
|
}),
|
|
operation = m[1],
|
|
args = m.slice(2).map(parseFloat);
|
|
|
|
switch (operation) {
|
|
case 'translate':
|
|
translateMatrix(matrix, args);
|
|
break;
|
|
case 'rotate':
|
|
args[0] = fabric.util.degreesToRadians(args[0]);
|
|
rotateMatrix(matrix, args);
|
|
break;
|
|
case 'scale':
|
|
scaleMatrix(matrix, args);
|
|
break;
|
|
case 'skewX':
|
|
skewXMatrix(matrix, args);
|
|
break;
|
|
case 'skewY':
|
|
skewYMatrix(matrix, args);
|
|
break;
|
|
case 'matrix':
|
|
matrix = args;
|
|
break;
|
|
}
|
|
|
|
// snapshot current matrix into matrices array
|
|
matrices.push(matrix.concat());
|
|
// reset
|
|
matrix = iMatrix.concat();
|
|
});
|
|
|
|
var combinedMatrix = matrices[0];
|
|
while (matrices.length > 1) {
|
|
matrices.shift();
|
|
combinedMatrix = fabric.util.multiplyTransformMatrices(combinedMatrix, matrices[0]);
|
|
}
|
|
return combinedMatrix;
|
|
};
|
|
})();
|
|
|
|
function parseFontDeclaration(value, oStyle) {
|
|
|
|
// TODO: support non-px font size
|
|
var match = value.match(/(normal|italic)?\s*(normal|small-caps)?\s*(normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900)?\s*(\d+)px(?:\/(normal|[\d\.]+))?\s+(.*)/);
|
|
|
|
if (!match) {
|
|
return;
|
|
}
|
|
|
|
var fontStyle = match[1],
|
|
// font variant is not used
|
|
// fontVariant = match[2],
|
|
fontWeight = match[3],
|
|
fontSize = match[4],
|
|
lineHeight = match[5],
|
|
fontFamily = match[6];
|
|
|
|
if (fontStyle) {
|
|
oStyle.fontStyle = fontStyle;
|
|
}
|
|
if (fontWeight) {
|
|
oStyle.fontWeight = isNaN(parseFloat(fontWeight)) ? fontWeight : parseFloat(fontWeight);
|
|
}
|
|
if (fontSize) {
|
|
oStyle.fontSize = parseFloat(fontSize);
|
|
}
|
|
if (fontFamily) {
|
|
oStyle.fontFamily = fontFamily;
|
|
}
|
|
if (lineHeight) {
|
|
oStyle.lineHeight = lineHeight === 'normal' ? 1 : lineHeight;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function parseStyleString(style, oStyle) {
|
|
var attr, value;
|
|
style.replace(/;$/, '').split(';').forEach(function (chunk) {
|
|
var pair = chunk.split(':');
|
|
|
|
attr = normalizeAttr(pair[0].trim().toLowerCase());
|
|
value = normalizeValue(attr, pair[1].trim());
|
|
|
|
if (attr === 'font') {
|
|
parseFontDeclaration(value, oStyle);
|
|
}
|
|
else {
|
|
oStyle[attr] = value;
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function parseStyleObject(style, oStyle) {
|
|
var attr, value;
|
|
for (var prop in style) {
|
|
if (typeof style[prop] === 'undefined') {
|
|
continue;
|
|
}
|
|
|
|
attr = normalizeAttr(prop.toLowerCase());
|
|
value = normalizeValue(attr, style[prop]);
|
|
|
|
if (attr === 'font') {
|
|
parseFontDeclaration(value, oStyle);
|
|
}
|
|
else {
|
|
oStyle[attr] = value;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function getGlobalStylesForElement(element) {
|
|
var styles = { };
|
|
|
|
for (var rule in fabric.cssRules) {
|
|
if (elementMatchesRule(element, rule.split(' '))) {
|
|
for (var property in fabric.cssRules[rule]) {
|
|
styles[property] = fabric.cssRules[rule][property];
|
|
}
|
|
}
|
|
}
|
|
return styles;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function elementMatchesRule(element, selectors) {
|
|
var firstMatching, parentMatching = true;
|
|
//start from rightmost selector.
|
|
firstMatching = selectorMatches(element, selectors.pop());
|
|
if (firstMatching && selectors.length) {
|
|
parentMatching = doesSomeParentMatch(element, selectors);
|
|
}
|
|
return firstMatching && parentMatching && (selectors.length === 0);
|
|
}
|
|
|
|
function doesSomeParentMatch(element, selectors) {
|
|
var selector, parentMatching = true;
|
|
while (element.parentNode && element.parentNode.nodeType === 1 && selectors.length) {
|
|
if (parentMatching) {
|
|
selector = selectors.pop();
|
|
}
|
|
element = element.parentNode;
|
|
parentMatching = selectorMatches(element, selector);
|
|
}
|
|
return selectors.length === 0;
|
|
}
|
|
/**
|
|
* @private
|
|
*/
|
|
function selectorMatches(element, selector) {
|
|
var nodeName = element.nodeName,
|
|
classNames = element.getAttribute('class'),
|
|
id = element.getAttribute('id'), matcher;
|
|
// i check if a selector matches slicing away part from it.
|
|
// if i get empty string i should match
|
|
matcher = new RegExp('^' + nodeName, 'i');
|
|
selector = selector.replace(matcher, '');
|
|
if (id && selector.length) {
|
|
matcher = new RegExp('#' + id + '(?![a-zA-Z\\-]+)', 'i');
|
|
selector = selector.replace(matcher, '');
|
|
}
|
|
if (classNames && selector.length) {
|
|
classNames = classNames.split(' ');
|
|
for (var i = classNames.length; i--;) {
|
|
matcher = new RegExp('\\.' + classNames[i] + '(?![a-zA-Z\\-]+)', 'i');
|
|
selector = selector.replace(matcher, '');
|
|
}
|
|
}
|
|
return selector.length === 0;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function parseUseDirectives(doc) {
|
|
var nodelist = doc.getElementsByTagName('use');
|
|
while (nodelist.length) {
|
|
var el = nodelist[0],
|
|
xlink = el.getAttribute('xlink:href').substr(1),
|
|
x = el.getAttribute('x') || 0,
|
|
y = el.getAttribute('y') || 0,
|
|
el2 = doc.getElementById(xlink).cloneNode(true),
|
|
currentTrans = (el.getAttribute('transform') || '') + ' translate(' + x + ', ' + y + ')',
|
|
parentNode;
|
|
|
|
for (var j = 0, attrs = el.attributes, l = attrs.length; j < l; j++) {
|
|
var attr = attrs.item(j);
|
|
if (attr.nodeName === 'x' || attr.nodeName === 'y' || attr.nodeName === 'xlink:href') {
|
|
continue;
|
|
}
|
|
|
|
if (attr.nodeName === 'transform') {
|
|
currentTrans = currentTrans + ' ' + attr.nodeValue;
|
|
}
|
|
else {
|
|
el2.setAttribute(attr.nodeName, attr.nodeValue);
|
|
}
|
|
}
|
|
|
|
el2.setAttribute('transform', currentTrans);
|
|
el2.removeAttribute('id');
|
|
parentNode = el.parentNode;
|
|
parentNode.replaceChild(el2, el);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add a <g> element that envelop all SCG elements and makes the viewbox transformMatrix descend on all elements
|
|
*/
|
|
function addSvgTransform(doc, matrix) {
|
|
matrix[3] = matrix[0] = (matrix[0] > matrix[3] ? matrix[3] : matrix[0]);
|
|
if (!(matrix[0] !== 1 || matrix[3] !== 1 || matrix[4] !== 0 || matrix[5] !== 0)) {
|
|
return;
|
|
}
|
|
// default is to preserve aspect ratio
|
|
// preserveAspectRatio attribute to be implemented
|
|
var el = doc.ownerDocument.createElement('g');
|
|
while (doc.firstChild != null) {
|
|
el.appendChild(doc.firstChild);
|
|
}
|
|
el.setAttribute('transform','matrix(' + matrix[0] + ' ' + matrix[1] + ' ' + matrix[2] + ' ' + matrix[3] + ' ' + matrix[4] + ' ' + matrix[5] + ')');
|
|
doc.appendChild(el);
|
|
}
|
|
|
|
/**
|
|
* Parses an SVG document, converts it to an array of corresponding fabric.* instances and passes them to a callback
|
|
* @static
|
|
* @function
|
|
* @memberOf fabric
|
|
* @param {SVGDocument} doc SVG document to parse
|
|
* @param {Function} callback Callback to call when parsing is finished; It's being passed an array of elements (parsed from a document).
|
|
* @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.
|
|
*/
|
|
fabric.parseSVGDocument = (function() {
|
|
|
|
var reAllowedSVGTagNames = /^(path|circle|polygon|polyline|ellipse|rect|line|image|text)$/,
|
|
|
|
// http://www.w3.org/TR/SVG/coords.html#ViewBoxAttribute
|
|
// \d doesn't quite cut it (as we need to match an actual float number)
|
|
|
|
// matches, e.g.: +14.56e-12, etc.
|
|
reNum = '(?:[-+]?(?:\\d+|\\d*\\.\\d+)(?:e[-+]?\\d+)?)',
|
|
|
|
reViewBoxAttrValue = new RegExp(
|
|
'^' +
|
|
'\\s*(' + reNum + '+)\\s*,?' +
|
|
'\\s*(' + reNum + '+)\\s*,?' +
|
|
'\\s*(' + reNum + '+)\\s*,?' +
|
|
'\\s*(' + reNum + '+)\\s*' +
|
|
'$'
|
|
);
|
|
|
|
function hasAncestorWithNodeName(element, nodeName) {
|
|
while (element && (element = element.parentNode)) {
|
|
if (nodeName.test(element.nodeName)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return function(doc, callback, reviver) {
|
|
if (!doc) {
|
|
return;
|
|
}
|
|
var startTime = new Date();
|
|
|
|
parseUseDirectives(doc);
|
|
/* http://www.w3.org/TR/SVG/struct.html#SVGElementWidthAttribute
|
|
* as per spec, width and height attributes are to be considered
|
|
* 100% if no value is specified.
|
|
*/
|
|
var viewBoxAttr = doc.getAttribute('viewBox'),
|
|
widthAttr = parseUnit(doc.getAttribute('width') || '100%'),
|
|
heightAttr = parseUnit(doc.getAttribute('height') || '100%'),
|
|
viewBoxWidth,
|
|
viewBoxHeight;
|
|
|
|
if (viewBoxAttr && (viewBoxAttr = viewBoxAttr.match(reViewBoxAttrValue))) {
|
|
var minX = parseFloat(viewBoxAttr[1]),
|
|
minY = parseFloat(viewBoxAttr[2]),
|
|
scaleX = 1, scaleY = 1;
|
|
viewBoxWidth = parseFloat(viewBoxAttr[3]);
|
|
viewBoxHeight = parseFloat(viewBoxAttr[4]);
|
|
if (widthAttr && widthAttr !== viewBoxWidth ) {
|
|
scaleX = widthAttr / viewBoxWidth;
|
|
}
|
|
if (heightAttr && heightAttr !== viewBoxHeight) {
|
|
scaleY = heightAttr / viewBoxHeight;
|
|
}
|
|
addSvgTransform(doc, [scaleX, 0, 0, scaleY, scaleX * -minX, scaleY * -minY]);
|
|
}
|
|
|
|
var descendants = fabric.util.toArray(doc.getElementsByTagName('*'));
|
|
|
|
if (descendants.length === 0 && fabric.isLikelyNode) {
|
|
// we're likely in node, where "o3-xml" library fails to gEBTN("*")
|
|
// https://github.com/ajaxorg/node-o3-xml/issues/21
|
|
descendants = doc.selectNodes('//*[name(.)!="svg"]');
|
|
var arr = [ ];
|
|
for (var i = 0, len = descendants.length; i < len; i++) {
|
|
arr[i] = descendants[i];
|
|
}
|
|
descendants = arr;
|
|
}
|
|
|
|
var elements = descendants.filter(function(el) {
|
|
return reAllowedSVGTagNames.test(el.tagName) &&
|
|
!hasAncestorWithNodeName(el, /^(?:pattern|defs)$/); // http://www.w3.org/TR/SVG/struct.html#DefsElement
|
|
});
|
|
|
|
if (!elements || (elements && !elements.length)) {
|
|
callback && callback([], {});
|
|
return;
|
|
}
|
|
|
|
var options = {
|
|
width: widthAttr ? widthAttr : viewBoxWidth,
|
|
height: heightAttr ? heightAttr : viewBoxHeight,
|
|
widthAttr: widthAttr,
|
|
heightAttr: heightAttr
|
|
};
|
|
|
|
fabric.gradientDefs = fabric.getGradientDefs(doc);
|
|
fabric.cssRules = fabric.getCSSRules(doc);
|
|
// Precedence of rules: style > class > attribute
|
|
|
|
fabric.parseElements(elements, function(instances) {
|
|
fabric.documentParsingTime = new Date() - startTime;
|
|
if (callback) {
|
|
callback(instances, options);
|
|
}
|
|
}, clone(options), reviver);
|
|
};
|
|
})();
|
|
|
|
/**
|
|
* Used for caching SVG documents (loaded via `fabric.Canvas#loadSVGFromURL`)
|
|
* @namespace
|
|
*/
|
|
var svgCache = {
|
|
|
|
/**
|
|
* @param {String} name
|
|
* @param {Function} callback
|
|
*/
|
|
has: function (name, callback) {
|
|
callback(false);
|
|
},
|
|
|
|
get: function () {
|
|
/* NOOP */
|
|
},
|
|
|
|
set: function () {
|
|
/* NOOP */
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function _enlivenCachedObject(cachedObject) {
|
|
|
|
var objects = cachedObject.objects,
|
|
options = cachedObject.options;
|
|
|
|
objects = objects.map(function (o) {
|
|
return fabric[capitalize(o.type)].fromObject(o);
|
|
});
|
|
|
|
return ({ objects: objects, options: options });
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function _createSVGPattern(markup, canvas, property) {
|
|
if (canvas[property] && canvas[property].toSVG) {
|
|
markup.push(
|
|
'<pattern x="0" y="0" id="', property, 'Pattern" ',
|
|
'width="', canvas[property].source.width,
|
|
'" height="', canvas[property].source.height,
|
|
'" patternUnits="userSpaceOnUse">',
|
|
'<image x="0" y="0" ',
|
|
'width="', canvas[property].source.width,
|
|
'" height="', canvas[property].source.height,
|
|
'" xlink:href="', canvas[property].source.src,
|
|
'"></image></pattern>'
|
|
);
|
|
}
|
|
}
|
|
|
|
extend(fabric, {
|
|
|
|
/**
|
|
* Parses an SVG document, returning all of the gradient declarations found in it
|
|
* @static
|
|
* @function
|
|
* @memberOf fabric
|
|
* @param {SVGDocument} doc SVG document to parse
|
|
* @return {Object} Gradient definitions; key corresponds to element id, value -- to gradient definition element
|
|
*/
|
|
getGradientDefs: function(doc) {
|
|
var linearGradientEls = doc.getElementsByTagName('linearGradient'),
|
|
radialGradientEls = doc.getElementsByTagName('radialGradient'),
|
|
el, i, j = 0, id, xlink, elList = [ ],
|
|
gradientDefs = { }, idsToXlinkMap = { };
|
|
|
|
elList.length = linearGradientEls.length + radialGradientEls.length;
|
|
i = linearGradientEls.length;
|
|
while (i--) {
|
|
elList[j++] = linearGradientEls[i];
|
|
}
|
|
i = radialGradientEls.length;
|
|
while (i--) {
|
|
elList[j++] = radialGradientEls[i];
|
|
}
|
|
|
|
while (j--) {
|
|
el = elList[j];
|
|
xlink = el.getAttribute('xlink:href');
|
|
id = el.getAttribute('id');
|
|
if (xlink) {
|
|
idsToXlinkMap[id] = xlink.substr(1);
|
|
}
|
|
gradientDefs[id] = el;
|
|
}
|
|
|
|
for (id in idsToXlinkMap) {
|
|
var el2 = gradientDefs[idsToXlinkMap[id]].cloneNode(true);
|
|
el = gradientDefs[id];
|
|
while (el2.firstChild) {
|
|
el.appendChild(el2.firstChild);
|
|
}
|
|
}
|
|
return gradientDefs;
|
|
},
|
|
|
|
/**
|
|
* Returns an object of attributes' name/value, given element and an array of attribute names;
|
|
* Parses parent "g" nodes recursively upwards.
|
|
* @static
|
|
* @memberOf fabric
|
|
* @param {DOMElement} element Element to parse
|
|
* @param {Array} attributes Array of attributes to parse
|
|
* @return {Object} object containing parsed attributes' names/values
|
|
*/
|
|
parseAttributes: function(element, attributes) {
|
|
|
|
if (!element) {
|
|
return;
|
|
}
|
|
|
|
var value,
|
|
parentAttributes = { };
|
|
|
|
// if there's a parent container (`g` or `a` or `symbol` node), parse its attributes recursively upwards
|
|
if (element.parentNode && /^symbol|[g|a]$/i.test(element.parentNode.nodeName)) {
|
|
parentAttributes = fabric.parseAttributes(element.parentNode, attributes);
|
|
}
|
|
|
|
var ownAttributes = attributes.reduce(function(memo, attr) {
|
|
value = element.getAttribute(attr);
|
|
if (value) {
|
|
attr = normalizeAttr(attr);
|
|
value = normalizeValue(attr, value, parentAttributes);
|
|
|
|
memo[attr] = value;
|
|
}
|
|
return memo;
|
|
}, { });
|
|
|
|
// add values parsed from style, which take precedence over attributes
|
|
// (see: http://www.w3.org/TR/SVG/styling.html#UsingPresentationAttributes)
|
|
ownAttributes = extend(ownAttributes,
|
|
extend(getGlobalStylesForElement(element), fabric.parseStyleAttribute(element)));
|
|
|
|
return _setStrokeFillOpacity(extend(parentAttributes, ownAttributes));
|
|
},
|
|
|
|
/**
|
|
* Transforms an array of svg elements to corresponding fabric.* instances
|
|
* @static
|
|
* @memberOf fabric
|
|
* @param {Array} elements Array of elements to parse
|
|
* @param {Function} callback Being passed an array of fabric instances (transformed from SVG elements)
|
|
* @param {Object} [options] Options object
|
|
* @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.
|
|
*/
|
|
parseElements: function(elements, callback, options, reviver) {
|
|
new fabric.ElementsParser(elements, callback, options, reviver).parse();
|
|
},
|
|
|
|
/**
|
|
* Parses "style" attribute, retuning an object with values
|
|
* @static
|
|
* @memberOf fabric
|
|
* @param {SVGElement} element Element to parse
|
|
* @return {Object} Objects with values parsed from style attribute of an element
|
|
*/
|
|
parseStyleAttribute: function(element) {
|
|
var oStyle = { },
|
|
style = element.getAttribute('style');
|
|
|
|
if (!style) {
|
|
return oStyle;
|
|
}
|
|
|
|
if (typeof style === 'string') {
|
|
parseStyleString(style, oStyle);
|
|
}
|
|
else {
|
|
parseStyleObject(style, oStyle);
|
|
}
|
|
|
|
return oStyle;
|
|
},
|
|
|
|
/**
|
|
* Parses "points" attribute, returning an array of values
|
|
* @static
|
|
* @memberOf fabric
|
|
* @param {String} points points attribute string
|
|
* @return {Array} array of points
|
|
*/
|
|
parsePointsAttribute: function(points) {
|
|
|
|
// points attribute is required and must not be empty
|
|
if (!points) {
|
|
return null;
|
|
}
|
|
|
|
// replace commas with whitespace and remove bookending whitespace
|
|
points = points.replace(/,/g, ' ').trim();
|
|
|
|
points = points.split(/\s+/);
|
|
var parsedPoints = [ ], i, len;
|
|
|
|
i = 0;
|
|
len = points.length;
|
|
for (; i < len; i+=2) {
|
|
parsedPoints.push({
|
|
x: parseFloat(points[i]),
|
|
y: parseFloat(points[i + 1])
|
|
});
|
|
}
|
|
|
|
// odd number of points is an error
|
|
// if (parsedPoints.length % 2 !== 0) {
|
|
// return null;
|
|
// }
|
|
|
|
return parsedPoints;
|
|
},
|
|
|
|
/**
|
|
* Returns CSS rules for a given SVG document
|
|
* @static
|
|
* @function
|
|
* @memberOf fabric
|
|
* @param {SVGDocument} doc SVG document to parse
|
|
* @return {Object} CSS rules of this document
|
|
*/
|
|
getCSSRules: function(doc) {
|
|
var styles = doc.getElementsByTagName('style'),
|
|
allRules = { }, rules;
|
|
|
|
// very crude parsing of style contents
|
|
for (var i = 0, len = styles.length; i < len; i++) {
|
|
var styleContents = styles[0].textContent;
|
|
|
|
// remove comments
|
|
styleContents = styleContents.replace(/\/\*[\s\S]*?\*\//g, '');
|
|
|
|
rules = styleContents.match(/[^{]*\{[\s\S]*?\}/g);
|
|
rules = rules.map(function(rule) { return rule.trim(); });
|
|
|
|
rules.forEach(function(rule) {
|
|
|
|
var match = rule.match(/([\s\S]*?)\s*\{([^}]*)\}/),
|
|
ruleObj = { }, declaration = match[2].trim(),
|
|
propertyValuePairs = declaration.replace(/;$/, '').split(/\s*;\s*/);
|
|
|
|
for (var i = 0, len = propertyValuePairs.length; i < len; i++) {
|
|
var pair = propertyValuePairs[i].split(/\s*:\s*/),
|
|
property = normalizeAttr(pair[0]),
|
|
value = normalizeValue(property,pair[1],pair[0]);
|
|
ruleObj[property] = value;
|
|
}
|
|
rule = match[1];
|
|
rule.split(',').forEach(function(_rule) {
|
|
allRules[_rule.trim()] = fabric.util.object.clone(ruleObj);
|
|
});
|
|
});
|
|
}
|
|
return allRules;
|
|
},
|
|
|
|
/**
|
|
* Takes url corresponding to an SVG document, and parses it into a set of fabric objects. Note that SVG is fetched via XMLHttpRequest, so it needs to conform to SOP (Same Origin Policy)
|
|
* @memberof fabric
|
|
* @param {String} url
|
|
* @param {Function} callback
|
|
* @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.
|
|
*/
|
|
loadSVGFromURL: function(url, callback, reviver) {
|
|
|
|
url = url.replace(/^\n\s*/, '').trim();
|
|
svgCache.has(url, function (hasUrl) {
|
|
if (hasUrl) {
|
|
svgCache.get(url, function (value) {
|
|
var enlivedRecord = _enlivenCachedObject(value);
|
|
callback(enlivedRecord.objects, enlivedRecord.options);
|
|
});
|
|
}
|
|
else {
|
|
new fabric.util.request(url, {
|
|
method: 'get',
|
|
onComplete: onComplete
|
|
});
|
|
}
|
|
});
|
|
|
|
function onComplete(r) {
|
|
|
|
var xml = r.responseXML;
|
|
if (xml && !xml.documentElement && fabric.window.ActiveXObject && r.responseText) {
|
|
xml = new ActiveXObject('Microsoft.XMLDOM');
|
|
xml.async = 'false';
|
|
//IE chokes on DOCTYPE
|
|
xml.loadXML(r.responseText.replace(/<!DOCTYPE[\s\S]*?(\[[\s\S]*\])*?>/i,''));
|
|
}
|
|
if (!xml || !xml.documentElement) {
|
|
return;
|
|
}
|
|
|
|
fabric.parseSVGDocument(xml.documentElement, function (results, options) {
|
|
svgCache.set(url, {
|
|
objects: fabric.util.array.invoke(results, 'toObject'),
|
|
options: options
|
|
});
|
|
callback(results, options);
|
|
}, reviver);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Takes string corresponding to an SVG document, and parses it into a set of fabric objects
|
|
* @memberof fabric
|
|
* @param {String} string
|
|
* @param {Function} callback
|
|
* @param {Function} [reviver] Method for further parsing of SVG elements, called after each fabric object created.
|
|
*/
|
|
loadSVGFromString: function(string, callback, reviver) {
|
|
string = string.trim();
|
|
var doc;
|
|
if (typeof DOMParser !== 'undefined') {
|
|
var parser = new DOMParser();
|
|
if (parser && parser.parseFromString) {
|
|
doc = parser.parseFromString(string, 'text/xml');
|
|
}
|
|
}
|
|
else if (fabric.window.ActiveXObject) {
|
|
doc = new ActiveXObject('Microsoft.XMLDOM');
|
|
doc.async = 'false';
|
|
//IE chokes on DOCTYPE
|
|
doc.loadXML(string.replace(/<!DOCTYPE[\s\S]*?(\[[\s\S]*\])*?>/i,''));
|
|
}
|
|
|
|
fabric.parseSVGDocument(doc.documentElement, function (results, options) {
|
|
callback(results, options);
|
|
}, reviver);
|
|
},
|
|
|
|
/**
|
|
* Creates markup containing SVG font faces
|
|
* @param {Array} objects Array of fabric objects
|
|
* @return {String}
|
|
*/
|
|
createSVGFontFacesMarkup: function(objects) {
|
|
var markup = '';
|
|
|
|
for (var i = 0, len = objects.length; i < len; i++) {
|
|
if (objects[i].type !== 'text' || !objects[i].path) {
|
|
continue;
|
|
}
|
|
|
|
markup += [
|
|
//jscs:disable validateIndentation
|
|
'@font-face {',
|
|
'font-family: ', objects[i].fontFamily, '; ',
|
|
'src: url(\'', objects[i].path, '\')',
|
|
'}'
|
|
//jscs:enable validateIndentation
|
|
].join('');
|
|
}
|
|
|
|
if (markup) {
|
|
markup = [
|
|
//jscs:disable validateIndentation
|
|
'<style type="text/css">',
|
|
'<![CDATA[',
|
|
markup,
|
|
']]>',
|
|
'</style>'
|
|
//jscs:enable validateIndentation
|
|
].join('');
|
|
}
|
|
|
|
return markup;
|
|
},
|
|
|
|
/**
|
|
* Creates markup containing SVG referenced elements like patterns, gradients etc.
|
|
* @param {fabric.Canvas} canvas instance of fabric.Canvas
|
|
* @return {String}
|
|
*/
|
|
createSVGRefElementsMarkup: function(canvas) {
|
|
var markup = [ ];
|
|
|
|
_createSVGPattern(markup, canvas, 'backgroundColor');
|
|
_createSVGPattern(markup, canvas, 'overlayColor');
|
|
|
|
return markup.join('');
|
|
}
|
|
});
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
fabric.ElementsParser = function(elements, callback, options, reviver) {
|
|
this.elements = elements;
|
|
this.callback = callback;
|
|
this.options = options;
|
|
this.reviver = reviver;
|
|
};
|
|
|
|
fabric.ElementsParser.prototype.parse = function() {
|
|
this.instances = new Array(this.elements.length);
|
|
this.numElements = this.elements.length;
|
|
|
|
this.createObjects();
|
|
};
|
|
|
|
fabric.ElementsParser.prototype.createObjects = function() {
|
|
for (var i = 0, len = this.elements.length; i < len; i++) {
|
|
(function(_this, i) {
|
|
setTimeout(function() {
|
|
_this.createObject(_this.elements[i], i);
|
|
}, 0);
|
|
})(this, i);
|
|
}
|
|
};
|
|
|
|
fabric.ElementsParser.prototype.createObject = function(el, index) {
|
|
var klass = fabric[fabric.util.string.capitalize(el.tagName)];
|
|
if (klass && klass.fromElement) {
|
|
try {
|
|
this._createObject(klass, el, index);
|
|
}
|
|
catch (err) {
|
|
fabric.log(err);
|
|
}
|
|
}
|
|
else {
|
|
this.checkIfDone();
|
|
}
|
|
};
|
|
|
|
fabric.ElementsParser.prototype._createObject = function(klass, el, index) {
|
|
if (klass.async) {
|
|
klass.fromElement(el, this.createCallback(index, el), this.options);
|
|
}
|
|
else {
|
|
var obj = klass.fromElement(el, this.options);
|
|
this.resolveGradient(obj, 'fill');
|
|
this.resolveGradient(obj, 'stroke');
|
|
this.reviver && this.reviver(el, obj);
|
|
this.instances[index] = obj;
|
|
this.checkIfDone();
|
|
}
|
|
};
|
|
|
|
fabric.ElementsParser.prototype.createCallback = function(index, el) {
|
|
var _this = this;
|
|
return function(obj) {
|
|
_this.resolveGradient(obj, 'fill');
|
|
_this.resolveGradient(obj, 'stroke');
|
|
_this.reviver && _this.reviver(el, obj);
|
|
_this.instances[index] = obj;
|
|
_this.checkIfDone();
|
|
};
|
|
};
|
|
|
|
fabric.ElementsParser.prototype.resolveGradient = function(obj, property) {
|
|
|
|
var instanceFillValue = obj.get(property);
|
|
if (!(/^url\(/).test(instanceFillValue)) {
|
|
return;
|
|
}
|
|
var gradientId = instanceFillValue.slice(5, instanceFillValue.length - 1);
|
|
if (fabric.gradientDefs[gradientId]) {
|
|
obj.set(property,
|
|
fabric.Gradient.fromElement(fabric.gradientDefs[gradientId], obj));
|
|
}
|
|
};
|
|
|
|
fabric.ElementsParser.prototype.checkIfDone = function() {
|
|
if (--this.numElements === 0) {
|
|
this.instances = this.instances.filter(function(el) {
|
|
return el != null;
|
|
});
|
|
this.callback(this.instances);
|
|
}
|
|
};
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
/* Adaptation of work of Kevin Lindsey (kevin@kevlindev.com) */
|
|
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
if (fabric.Point) {
|
|
fabric.warn('fabric.Point is already defined');
|
|
return;
|
|
}
|
|
|
|
fabric.Point = Point;
|
|
|
|
/**
|
|
* Point class
|
|
* @class fabric.Point
|
|
* @memberOf fabric
|
|
* @constructor
|
|
* @param {Number} x
|
|
* @param {Number} y
|
|
* @return {fabric.Point} thisArg
|
|
*/
|
|
function Point(x, y) {
|
|
this.x = x;
|
|
this.y = y;
|
|
}
|
|
|
|
Point.prototype = /** @lends fabric.Point.prototype */ {
|
|
|
|
constructor: Point,
|
|
|
|
/**
|
|
* Adds another point to this one and returns another one
|
|
* @param {fabric.Point} that
|
|
* @return {fabric.Point} new Point instance with added values
|
|
*/
|
|
add: function (that) {
|
|
return new Point(this.x + that.x, this.y + that.y);
|
|
},
|
|
|
|
/**
|
|
* Adds another point to this one
|
|
* @param {fabric.Point} that
|
|
* @return {fabric.Point} thisArg
|
|
*/
|
|
addEquals: function (that) {
|
|
this.x += that.x;
|
|
this.y += that.y;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Adds value to this point and returns a new one
|
|
* @param {Number} scalar
|
|
* @return {fabric.Point} new Point with added value
|
|
*/
|
|
scalarAdd: function (scalar) {
|
|
return new Point(this.x + scalar, this.y + scalar);
|
|
},
|
|
|
|
/**
|
|
* Adds value to this point
|
|
* @param {Number} scalar
|
|
* @return {fabric.Point} thisArg
|
|
*/
|
|
scalarAddEquals: function (scalar) {
|
|
this.x += scalar;
|
|
this.y += scalar;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Subtracts another point from this point and returns a new one
|
|
* @param {fabric.Point} that
|
|
* @return {fabric.Point} new Point object with subtracted values
|
|
*/
|
|
subtract: function (that) {
|
|
return new Point(this.x - that.x, this.y - that.y);
|
|
},
|
|
|
|
/**
|
|
* Subtracts another point from this point
|
|
* @param {fabric.Point} that
|
|
* @return {fabric.Point} thisArg
|
|
*/
|
|
subtractEquals: function (that) {
|
|
this.x -= that.x;
|
|
this.y -= that.y;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Subtracts value from this point and returns a new one
|
|
* @param {Number} scalar
|
|
* @return {fabric.Point}
|
|
*/
|
|
scalarSubtract: function (scalar) {
|
|
return new Point(this.x - scalar, this.y - scalar);
|
|
},
|
|
|
|
/**
|
|
* Subtracts value from this point
|
|
* @param {Number} scalar
|
|
* @return {fabric.Point} thisArg
|
|
*/
|
|
scalarSubtractEquals: function (scalar) {
|
|
this.x -= scalar;
|
|
this.y -= scalar;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Miltiplies this point by a value and returns a new one
|
|
* @param {Number} scalar
|
|
* @return {fabric.Point}
|
|
*/
|
|
multiply: function (scalar) {
|
|
return new Point(this.x * scalar, this.y * scalar);
|
|
},
|
|
|
|
/**
|
|
* Miltiplies this point by a value
|
|
* @param {Number} scalar
|
|
* @return {fabric.Point} thisArg
|
|
*/
|
|
multiplyEquals: function (scalar) {
|
|
this.x *= scalar;
|
|
this.y *= scalar;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Divides this point by a value and returns a new one
|
|
* @param {Number} scalar
|
|
* @return {fabric.Point}
|
|
*/
|
|
divide: function (scalar) {
|
|
return new Point(this.x / scalar, this.y / scalar);
|
|
},
|
|
|
|
/**
|
|
* Divides this point by a value
|
|
* @param {Number} scalar
|
|
* @return {fabric.Point} thisArg
|
|
*/
|
|
divideEquals: function (scalar) {
|
|
this.x /= scalar;
|
|
this.y /= scalar;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns true if this point is equal to another one
|
|
* @param {fabric.Point} that
|
|
* @return {Boolean}
|
|
*/
|
|
eq: function (that) {
|
|
return (this.x === that.x && this.y === that.y);
|
|
},
|
|
|
|
/**
|
|
* Returns true if this point is less than another one
|
|
* @param {fabric.Point} that
|
|
* @return {Boolean}
|
|
*/
|
|
lt: function (that) {
|
|
return (this.x < that.x && this.y < that.y);
|
|
},
|
|
|
|
/**
|
|
* Returns true if this point is less than or equal to another one
|
|
* @param {fabric.Point} that
|
|
* @return {Boolean}
|
|
*/
|
|
lte: function (that) {
|
|
return (this.x <= that.x && this.y <= that.y);
|
|
},
|
|
|
|
/**
|
|
|
|
* Returns true if this point is greater another one
|
|
* @param {fabric.Point} that
|
|
* @return {Boolean}
|
|
*/
|
|
gt: function (that) {
|
|
return (this.x > that.x && this.y > that.y);
|
|
},
|
|
|
|
/**
|
|
* Returns true if this point is greater than or equal to another one
|
|
* @param {fabric.Point} that
|
|
* @return {Boolean}
|
|
*/
|
|
gte: function (that) {
|
|
return (this.x >= that.x && this.y >= that.y);
|
|
},
|
|
|
|
/**
|
|
* Returns new point which is the result of linear interpolation with this one and another one
|
|
* @param {fabric.Point} that
|
|
* @param {Number} t
|
|
* @return {fabric.Point}
|
|
*/
|
|
lerp: function (that, t) {
|
|
return new Point(this.x + (that.x - this.x) * t, this.y + (that.y - this.y) * t);
|
|
},
|
|
|
|
/**
|
|
* Returns distance from this point and another one
|
|
* @param {fabric.Point} that
|
|
* @return {Number}
|
|
*/
|
|
distanceFrom: function (that) {
|
|
var dx = this.x - that.x,
|
|
dy = this.y - that.y;
|
|
return Math.sqrt(dx * dx + dy * dy);
|
|
},
|
|
|
|
/**
|
|
* Returns the point between this point and another one
|
|
* @param {fabric.Point} that
|
|
* @return {fabric.Point}
|
|
*/
|
|
midPointFrom: function (that) {
|
|
return new Point(this.x + (that.x - this.x)/2, this.y + (that.y - this.y)/2);
|
|
},
|
|
|
|
/**
|
|
* Returns a new point which is the min of this and another one
|
|
* @param {fabric.Point} that
|
|
* @return {fabric.Point}
|
|
*/
|
|
min: function (that) {
|
|
return new Point(Math.min(this.x, that.x), Math.min(this.y, that.y));
|
|
},
|
|
|
|
/**
|
|
* Returns a new point which is the max of this and another one
|
|
* @param {fabric.Point} that
|
|
* @return {fabric.Point}
|
|
*/
|
|
max: function (that) {
|
|
return new Point(Math.max(this.x, that.x), Math.max(this.y, that.y));
|
|
},
|
|
|
|
/**
|
|
* Returns string representation of this point
|
|
* @return {String}
|
|
*/
|
|
toString: function () {
|
|
return this.x + ',' + this.y;
|
|
},
|
|
|
|
/**
|
|
* Sets x/y of this point
|
|
* @param {Number} x
|
|
* @return {Number} y
|
|
*/
|
|
setXY: function (x, y) {
|
|
this.x = x;
|
|
this.y = y;
|
|
},
|
|
|
|
/**
|
|
* Sets x/y of this point from another point
|
|
* @param {fabric.Point} that
|
|
*/
|
|
setFromPoint: function (that) {
|
|
this.x = that.x;
|
|
this.y = that.y;
|
|
},
|
|
|
|
/**
|
|
* Swaps x/y of this point and another point
|
|
* @param {fabric.Point} that
|
|
*/
|
|
swap: function (that) {
|
|
var x = this.x,
|
|
y = this.y;
|
|
this.x = that.x;
|
|
this.y = that.y;
|
|
that.x = x;
|
|
that.y = y;
|
|
}
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
/* Adaptation of work of Kevin Lindsey (kevin@kevlindev.com) */
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
if (fabric.Intersection) {
|
|
fabric.warn('fabric.Intersection is already defined');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Intersection class
|
|
* @class fabric.Intersection
|
|
* @memberOf fabric
|
|
* @constructor
|
|
*/
|
|
function Intersection(status) {
|
|
this.status = status;
|
|
this.points = [];
|
|
}
|
|
|
|
fabric.Intersection = Intersection;
|
|
|
|
fabric.Intersection.prototype = /** @lends fabric.Intersection.prototype */ {
|
|
|
|
/**
|
|
* Appends a point to intersection
|
|
* @param {fabric.Point} point
|
|
*/
|
|
appendPoint: function (point) {
|
|
this.points.push(point);
|
|
},
|
|
|
|
/**
|
|
* Appends points to intersection
|
|
* @param {Array} points
|
|
*/
|
|
appendPoints: function (points) {
|
|
this.points = this.points.concat(points);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Checks if one line intersects another
|
|
* @static
|
|
* @param {fabric.Point} a1
|
|
* @param {fabric.Point} a2
|
|
* @param {fabric.Point} b1
|
|
* @param {fabric.Point} b2
|
|
* @return {fabric.Intersection}
|
|
*/
|
|
fabric.Intersection.intersectLineLine = function (a1, a2, b1, b2) {
|
|
var result,
|
|
uaT = (b2.x - b1.x) * (a1.y - b1.y) - (b2.y - b1.y) * (a1.x - b1.x),
|
|
ubT = (a2.x - a1.x) * (a1.y - b1.y) - (a2.y - a1.y) * (a1.x - b1.x),
|
|
uB = (b2.y - b1.y) * (a2.x - a1.x) - (b2.x - b1.x) * (a2.y - a1.y);
|
|
if (uB !== 0) {
|
|
var ua = uaT / uB,
|
|
ub = ubT / uB;
|
|
if (0 <= ua && ua <= 1 && 0 <= ub && ub <= 1) {
|
|
result = new Intersection('Intersection');
|
|
result.points.push(new fabric.Point(a1.x + ua * (a2.x - a1.x), a1.y + ua * (a2.y - a1.y)));
|
|
}
|
|
else {
|
|
result = new Intersection();
|
|
}
|
|
}
|
|
else {
|
|
if (uaT === 0 || ubT === 0) {
|
|
result = new Intersection('Coincident');
|
|
}
|
|
else {
|
|
result = new Intersection('Parallel');
|
|
}
|
|
}
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Checks if line intersects polygon
|
|
* @static
|
|
* @param {fabric.Point} a1
|
|
* @param {fabric.Point} a2
|
|
* @param {Array} points
|
|
* @return {fabric.Intersection}
|
|
*/
|
|
fabric.Intersection.intersectLinePolygon = function(a1,a2,points){
|
|
var result = new Intersection(),
|
|
length = points.length;
|
|
|
|
for (var i = 0; i < length; i++) {
|
|
var b1 = points[i],
|
|
b2 = points[(i + 1) % length],
|
|
inter = Intersection.intersectLineLine(a1, a2, b1, b2);
|
|
|
|
result.appendPoints(inter.points);
|
|
}
|
|
if (result.points.length > 0) {
|
|
result.status = 'Intersection';
|
|
}
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Checks if polygon intersects another polygon
|
|
* @static
|
|
* @param {Array} points1
|
|
* @param {Array} points2
|
|
* @return {fabric.Intersection}
|
|
*/
|
|
fabric.Intersection.intersectPolygonPolygon = function (points1, points2) {
|
|
var result = new Intersection(),
|
|
length = points1.length;
|
|
|
|
for (var i = 0; i < length; i++) {
|
|
var a1 = points1[i],
|
|
a2 = points1[(i + 1) % length],
|
|
inter = Intersection.intersectLinePolygon(a1, a2, points2);
|
|
|
|
result.appendPoints(inter.points);
|
|
}
|
|
if (result.points.length > 0) {
|
|
result.status = 'Intersection';
|
|
}
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Checks if polygon intersects rectangle
|
|
* @static
|
|
* @param {Array} points
|
|
* @param {Number} r1
|
|
* @param {Number} r2
|
|
* @return {fabric.Intersection}
|
|
*/
|
|
fabric.Intersection.intersectPolygonRectangle = function (points, r1, r2) {
|
|
var min = r1.min(r2),
|
|
max = r1.max(r2),
|
|
topRight = new fabric.Point(max.x, min.y),
|
|
bottomLeft = new fabric.Point(min.x, max.y),
|
|
inter1 = Intersection.intersectLinePolygon(min, topRight, points),
|
|
inter2 = Intersection.intersectLinePolygon(topRight, max, points),
|
|
inter3 = Intersection.intersectLinePolygon(max, bottomLeft, points),
|
|
inter4 = Intersection.intersectLinePolygon(bottomLeft, min, points),
|
|
result = new Intersection();
|
|
|
|
result.appendPoints(inter1.points);
|
|
result.appendPoints(inter2.points);
|
|
result.appendPoints(inter3.points);
|
|
result.appendPoints(inter4.points);
|
|
|
|
if (result.points.length > 0) {
|
|
result.status = 'Intersection';
|
|
}
|
|
return result;
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
if (fabric.Color) {
|
|
fabric.warn('fabric.Color is already defined.');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Color class
|
|
* The purpose of {@link fabric.Color} is to abstract and encapsulate common color operations;
|
|
* {@link fabric.Color} is a constructor and creates instances of {@link fabric.Color} objects.
|
|
*
|
|
* @class fabric.Color
|
|
* @param {String} color optional in hex or rgb(a) format
|
|
* @return {fabric.Color} thisArg
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#colors}
|
|
*/
|
|
function Color(color) {
|
|
if (!color) {
|
|
this.setSource([0, 0, 0, 1]);
|
|
}
|
|
else {
|
|
this._tryParsingColor(color);
|
|
}
|
|
}
|
|
|
|
fabric.Color = Color;
|
|
|
|
fabric.Color.prototype = /** @lends fabric.Color.prototype */ {
|
|
|
|
/**
|
|
* @private
|
|
* @param {String|Array} color Color value to parse
|
|
*/
|
|
_tryParsingColor: function(color) {
|
|
var source;
|
|
|
|
if (color in Color.colorNameMap) {
|
|
color = Color.colorNameMap[color];
|
|
}
|
|
|
|
if (color === 'transparent') {
|
|
this.setSource([255,255,255,0]);
|
|
return;
|
|
}
|
|
|
|
source = Color.sourceFromHex(color);
|
|
|
|
if (!source) {
|
|
source = Color.sourceFromRgb(color);
|
|
}
|
|
if (!source) {
|
|
source = Color.sourceFromHsl(color);
|
|
}
|
|
if (source) {
|
|
this.setSource(source);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Adapted from <a href="https://rawgithub.com/mjijackson/mjijackson.github.com/master/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript.html">https://github.com/mjijackson</a>
|
|
* @private
|
|
* @param {Number} r Red color value
|
|
* @param {Number} g Green color value
|
|
* @param {Number} b Blue color value
|
|
* @return {Array} Hsl color
|
|
*/
|
|
_rgbToHsl: function(r, g, b) {
|
|
r /= 255, g /= 255, b /= 255;
|
|
|
|
var h, s, l,
|
|
max = fabric.util.array.max([r, g, b]),
|
|
min = fabric.util.array.min([r, g, b]);
|
|
|
|
l = (max + min) / 2;
|
|
|
|
if (max === min) {
|
|
h = s = 0; // achromatic
|
|
}
|
|
else {
|
|
var d = max - min;
|
|
s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
|
|
switch (max) {
|
|
case r:
|
|
h = (g - b) / d + (g < b ? 6 : 0);
|
|
break;
|
|
case g:
|
|
h = (b - r) / d + 2;
|
|
break;
|
|
case b:
|
|
h = (r - g) / d + 4;
|
|
break;
|
|
}
|
|
h /= 6;
|
|
}
|
|
|
|
return [
|
|
Math.round(h * 360),
|
|
Math.round(s * 100),
|
|
Math.round(l * 100)
|
|
];
|
|
},
|
|
|
|
/**
|
|
* Returns source of this color (where source is an array representation; ex: [200, 200, 100, 1])
|
|
* @return {Array}
|
|
*/
|
|
getSource: function() {
|
|
return this._source;
|
|
},
|
|
|
|
/**
|
|
* Sets source of this color (where source is an array representation; ex: [200, 200, 100, 1])
|
|
* @param {Array} source
|
|
*/
|
|
setSource: function(source) {
|
|
this._source = source;
|
|
},
|
|
|
|
/**
|
|
* Returns color represenation in RGB format
|
|
* @return {String} ex: rgb(0-255,0-255,0-255)
|
|
*/
|
|
toRgb: function() {
|
|
var source = this.getSource();
|
|
return 'rgb(' + source[0] + ',' + source[1] + ',' + source[2] + ')';
|
|
},
|
|
|
|
/**
|
|
* Returns color represenation in RGBA format
|
|
* @return {String} ex: rgba(0-255,0-255,0-255,0-1)
|
|
*/
|
|
toRgba: function() {
|
|
var source = this.getSource();
|
|
return 'rgba(' + source[0] + ',' + source[1] + ',' + source[2] + ',' + source[3] + ')';
|
|
},
|
|
|
|
/**
|
|
* Returns color represenation in HSL format
|
|
* @return {String} ex: hsl(0-360,0%-100%,0%-100%)
|
|
*/
|
|
toHsl: function() {
|
|
var source = this.getSource(),
|
|
hsl = this._rgbToHsl(source[0], source[1], source[2]);
|
|
|
|
return 'hsl(' + hsl[0] + ',' + hsl[1] + '%,' + hsl[2] + '%)';
|
|
},
|
|
|
|
/**
|
|
* Returns color represenation in HSLA format
|
|
* @return {String} ex: hsla(0-360,0%-100%,0%-100%,0-1)
|
|
*/
|
|
toHsla: function() {
|
|
var source = this.getSource(),
|
|
hsl = this._rgbToHsl(source[0], source[1], source[2]);
|
|
|
|
return 'hsla(' + hsl[0] + ',' + hsl[1] + '%,' + hsl[2] + '%,' + source[3] + ')';
|
|
},
|
|
|
|
/**
|
|
* Returns color represenation in HEX format
|
|
* @return {String} ex: FF5555
|
|
*/
|
|
toHex: function() {
|
|
var source = this.getSource(), r, g, b;
|
|
|
|
r = source[0].toString(16);
|
|
r = (r.length === 1) ? ('0' + r) : r;
|
|
|
|
g = source[1].toString(16);
|
|
g = (g.length === 1) ? ('0' + g) : g;
|
|
|
|
b = source[2].toString(16);
|
|
b = (b.length === 1) ? ('0' + b) : b;
|
|
|
|
return r.toUpperCase() + g.toUpperCase() + b.toUpperCase();
|
|
},
|
|
|
|
/**
|
|
* Gets value of alpha channel for this color
|
|
* @return {Number} 0-1
|
|
*/
|
|
getAlpha: function() {
|
|
return this.getSource()[3];
|
|
},
|
|
|
|
/**
|
|
* Sets value of alpha channel for this color
|
|
* @param {Number} alpha Alpha value 0-1
|
|
* @return {fabric.Color} thisArg
|
|
*/
|
|
setAlpha: function(alpha) {
|
|
var source = this.getSource();
|
|
source[3] = alpha;
|
|
this.setSource(source);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Transforms color to its grayscale representation
|
|
* @return {fabric.Color} thisArg
|
|
*/
|
|
toGrayscale: function() {
|
|
var source = this.getSource(),
|
|
average = parseInt((source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0), 10),
|
|
currentAlpha = source[3];
|
|
this.setSource([average, average, average, currentAlpha]);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Transforms color to its black and white representation
|
|
* @param {Number} threshold
|
|
* @return {fabric.Color} thisArg
|
|
*/
|
|
toBlackWhite: function(threshold) {
|
|
var source = this.getSource(),
|
|
average = (source[0] * 0.3 + source[1] * 0.59 + source[2] * 0.11).toFixed(0),
|
|
currentAlpha = source[3];
|
|
|
|
threshold = threshold || 127;
|
|
|
|
average = (Number(average) < Number(threshold)) ? 0 : 255;
|
|
this.setSource([average, average, average, currentAlpha]);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Overlays color with another color
|
|
* @param {String|fabric.Color} otherColor
|
|
* @return {fabric.Color} thisArg
|
|
*/
|
|
overlayWith: function(otherColor) {
|
|
if (!(otherColor instanceof Color)) {
|
|
otherColor = new Color(otherColor);
|
|
}
|
|
|
|
var result = [],
|
|
alpha = this.getAlpha(),
|
|
otherAlpha = 0.5,
|
|
source = this.getSource(),
|
|
otherSource = otherColor.getSource();
|
|
|
|
for (var i = 0; i < 3; i++) {
|
|
result.push(Math.round((source[i] * (1 - otherAlpha)) + (otherSource[i] * otherAlpha)));
|
|
}
|
|
|
|
result[3] = alpha;
|
|
this.setSource(result);
|
|
return this;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Regex matching color in RGB or RGBA formats (ex: rgb(0, 0, 0), rgba(255, 100, 10, 0.5), rgba( 255 , 100 , 10 , 0.5 ), rgb(1,1,1), rgba(100%, 60%, 10%, 0.5))
|
|
* @static
|
|
* @field
|
|
* @memberOf fabric.Color
|
|
*/
|
|
fabric.Color.reRGBa = /^rgba?\(\s*(\d{1,3}(?:\.\d+)?\%?)\s*,\s*(\d{1,3}(?:\.\d+)?\%?)\s*,\s*(\d{1,3}(?:\.\d+)?\%?)\s*(?:\s*,\s*(\d+(?:\.\d+)?)\s*)?\)$/;
|
|
|
|
/**
|
|
* Regex matching color in HSL or HSLA formats (ex: hsl(200, 80%, 10%), hsla(300, 50%, 80%, 0.5), hsla( 300 , 50% , 80% , 0.5 ))
|
|
* @static
|
|
* @field
|
|
* @memberOf fabric.Color
|
|
*/
|
|
fabric.Color.reHSLa = /^hsla?\(\s*(\d{1,3})\s*,\s*(\d{1,3}\%)\s*,\s*(\d{1,3}\%)\s*(?:\s*,\s*(\d+(?:\.\d+)?)\s*)?\)$/;
|
|
|
|
/**
|
|
* Regex matching color in HEX format (ex: #FF5555, 010155, aff)
|
|
* @static
|
|
* @field
|
|
* @memberOf fabric.Color
|
|
*/
|
|
fabric.Color.reHex = /^#?([0-9a-f]{6}|[0-9a-f]{3})$/i;
|
|
|
|
/**
|
|
* Map of the 17 basic color names with HEX code
|
|
* @static
|
|
* @field
|
|
* @memberOf fabric.Color
|
|
* @see: http://www.w3.org/TR/CSS2/syndata.html#color-units
|
|
*/
|
|
fabric.Color.colorNameMap = {
|
|
aqua: '#00FFFF',
|
|
black: '#000000',
|
|
blue: '#0000FF',
|
|
fuchsia: '#FF00FF',
|
|
gray: '#808080',
|
|
green: '#008000',
|
|
lime: '#00FF00',
|
|
maroon: '#800000',
|
|
navy: '#000080',
|
|
olive: '#808000',
|
|
orange: '#FFA500',
|
|
purple: '#800080',
|
|
red: '#FF0000',
|
|
silver: '#C0C0C0',
|
|
teal: '#008080',
|
|
white: '#FFFFFF',
|
|
yellow: '#FFFF00'
|
|
};
|
|
|
|
/**
|
|
* @private
|
|
* @param {Number} p
|
|
* @param {Number} q
|
|
* @param {Number} t
|
|
* @return {Number}
|
|
*/
|
|
function hue2rgb(p, q, t){
|
|
if (t < 0) {
|
|
t += 1;
|
|
}
|
|
if (t > 1) {
|
|
t -= 1;
|
|
}
|
|
if (t < 1/6) {
|
|
return p + (q - p) * 6 * t;
|
|
}
|
|
if (t < 1/2) {
|
|
return q;
|
|
}
|
|
if (t < 2/3) {
|
|
return p + (q - p) * (2/3 - t) * 6;
|
|
}
|
|
return p;
|
|
}
|
|
|
|
/**
|
|
* Returns new color object, when given a color in RGB format
|
|
* @memberOf fabric.Color
|
|
* @param {String} color Color value ex: rgb(0-255,0-255,0-255)
|
|
* @return {fabric.Color}
|
|
*/
|
|
fabric.Color.fromRgb = function(color) {
|
|
return Color.fromSource(Color.sourceFromRgb(color));
|
|
};
|
|
|
|
/**
|
|
* Returns array represenatation (ex: [100, 100, 200, 1]) of a color that's in RGB or RGBA format
|
|
* @memberOf fabric.Color
|
|
* @param {String} color Color value ex: rgb(0-255,0-255,0-255), rgb(0%-100%,0%-100%,0%-100%)
|
|
* @return {Array} source
|
|
*/
|
|
fabric.Color.sourceFromRgb = function(color) {
|
|
var match = color.match(Color.reRGBa);
|
|
if (match) {
|
|
var r = parseInt(match[1], 10) / (/%$/.test(match[1]) ? 100 : 1) * (/%$/.test(match[1]) ? 255 : 1),
|
|
g = parseInt(match[2], 10) / (/%$/.test(match[2]) ? 100 : 1) * (/%$/.test(match[2]) ? 255 : 1),
|
|
b = parseInt(match[3], 10) / (/%$/.test(match[3]) ? 100 : 1) * (/%$/.test(match[3]) ? 255 : 1);
|
|
|
|
return [
|
|
parseInt(r, 10),
|
|
parseInt(g, 10),
|
|
parseInt(b, 10),
|
|
match[4] ? parseFloat(match[4]) : 1
|
|
];
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Returns new color object, when given a color in RGBA format
|
|
* @static
|
|
* @function
|
|
* @memberOf fabric.Color
|
|
* @param {String} color
|
|
* @return {fabric.Color}
|
|
*/
|
|
fabric.Color.fromRgba = Color.fromRgb;
|
|
|
|
/**
|
|
* Returns new color object, when given a color in HSL format
|
|
* @param {String} color Color value ex: hsl(0-260,0%-100%,0%-100%)
|
|
* @memberOf fabric.Color
|
|
* @return {fabric.Color}
|
|
*/
|
|
fabric.Color.fromHsl = function(color) {
|
|
return Color.fromSource(Color.sourceFromHsl(color));
|
|
};
|
|
|
|
/**
|
|
* Returns array represenatation (ex: [100, 100, 200, 1]) of a color that's in HSL or HSLA format.
|
|
* Adapted from <a href="https://rawgithub.com/mjijackson/mjijackson.github.com/master/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript.html">https://github.com/mjijackson</a>
|
|
* @memberOf fabric.Color
|
|
* @param {String} color Color value ex: hsl(0-360,0%-100%,0%-100%) or hsla(0-360,0%-100%,0%-100%, 0-1)
|
|
* @return {Array} source
|
|
* @see http://http://www.w3.org/TR/css3-color/#hsl-color
|
|
*/
|
|
fabric.Color.sourceFromHsl = function(color) {
|
|
var match = color.match(Color.reHSLa);
|
|
if (!match) {
|
|
return;
|
|
}
|
|
|
|
var h = (((parseFloat(match[1]) % 360) + 360) % 360) / 360,
|
|
s = parseFloat(match[2]) / (/%$/.test(match[2]) ? 100 : 1),
|
|
l = parseFloat(match[3]) / (/%$/.test(match[3]) ? 100 : 1),
|
|
r, g, b;
|
|
|
|
if (s === 0) {
|
|
r = g = b = l;
|
|
}
|
|
else {
|
|
var q = l <= 0.5 ? l * (s + 1) : l + s - l * s,
|
|
p = l * 2 - q;
|
|
|
|
r = hue2rgb(p, q, h + 1/3);
|
|
g = hue2rgb(p, q, h);
|
|
b = hue2rgb(p, q, h - 1/3);
|
|
}
|
|
|
|
return [
|
|
Math.round(r * 255),
|
|
Math.round(g * 255),
|
|
Math.round(b * 255),
|
|
match[4] ? parseFloat(match[4]) : 1
|
|
];
|
|
};
|
|
|
|
/**
|
|
* Returns new color object, when given a color in HSLA format
|
|
* @static
|
|
* @function
|
|
* @memberOf fabric.Color
|
|
* @param {String} color
|
|
* @return {fabric.Color}
|
|
*/
|
|
fabric.Color.fromHsla = Color.fromHsl;
|
|
|
|
/**
|
|
* Returns new color object, when given a color in HEX format
|
|
* @static
|
|
* @memberOf fabric.Color
|
|
* @param {String} color Color value ex: FF5555
|
|
* @return {fabric.Color}
|
|
*/
|
|
fabric.Color.fromHex = function(color) {
|
|
return Color.fromSource(Color.sourceFromHex(color));
|
|
};
|
|
|
|
/**
|
|
* Returns array represenatation (ex: [100, 100, 200, 1]) of a color that's in HEX format
|
|
* @static
|
|
* @memberOf fabric.Color
|
|
* @param {String} color ex: FF5555
|
|
* @return {Array} source
|
|
*/
|
|
fabric.Color.sourceFromHex = function(color) {
|
|
if (color.match(Color.reHex)) {
|
|
var value = color.slice(color.indexOf('#') + 1),
|
|
isShortNotation = (value.length === 3),
|
|
r = isShortNotation ? (value.charAt(0) + value.charAt(0)) : value.substring(0, 2),
|
|
g = isShortNotation ? (value.charAt(1) + value.charAt(1)) : value.substring(2, 4),
|
|
b = isShortNotation ? (value.charAt(2) + value.charAt(2)) : value.substring(4, 6);
|
|
|
|
return [
|
|
parseInt(r, 16),
|
|
parseInt(g, 16),
|
|
parseInt(b, 16),
|
|
1
|
|
];
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Returns new color object, when given color in array representation (ex: [200, 100, 100, 0.5])
|
|
* @static
|
|
* @memberOf fabric.Color
|
|
* @param {Array} source
|
|
* @return {fabric.Color}
|
|
*/
|
|
fabric.Color.fromSource = function(source) {
|
|
var oColor = new Color();
|
|
oColor.setSource(source);
|
|
return oColor;
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function() {
|
|
|
|
/* _FROM_SVG_START_ */
|
|
function getColorStop(el) {
|
|
var style = el.getAttribute('style'),
|
|
offset = el.getAttribute('offset'),
|
|
color, colorAlpha, opacity;
|
|
|
|
// convert percents to absolute values
|
|
offset = parseFloat(offset) / (/%$/.test(offset) ? 100 : 1);
|
|
offset = offset < 0 ? 0 : offset > 1 ? 1 : offset;
|
|
if (style) {
|
|
var keyValuePairs = style.split(/\s*;\s*/);
|
|
|
|
if (keyValuePairs[keyValuePairs.length - 1] === '') {
|
|
keyValuePairs.pop();
|
|
}
|
|
|
|
for (var i = keyValuePairs.length; i--; ) {
|
|
|
|
var split = keyValuePairs[i].split(/\s*:\s*/),
|
|
key = split[0].trim(),
|
|
value = split[1].trim();
|
|
|
|
if (key === 'stop-color') {
|
|
color = value;
|
|
}
|
|
else if (key === 'stop-opacity') {
|
|
opacity = value;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!color) {
|
|
color = el.getAttribute('stop-color') || 'rgb(0,0,0)';
|
|
}
|
|
if (!opacity) {
|
|
opacity = el.getAttribute('stop-opacity');
|
|
}
|
|
|
|
color = new fabric.Color(color);
|
|
colorAlpha = color.getAlpha();
|
|
opacity = isNaN(parseFloat(opacity)) ? 1 : parseFloat(opacity);
|
|
opacity *= colorAlpha;
|
|
|
|
return {
|
|
offset: offset,
|
|
color: color.toRgb(),
|
|
opacity: opacity
|
|
};
|
|
}
|
|
|
|
function getLinearCoords(el) {
|
|
return {
|
|
x1: el.getAttribute('x1') || 0,
|
|
y1: el.getAttribute('y1') || 0,
|
|
x2: el.getAttribute('x2') || '100%',
|
|
y2: el.getAttribute('y2') || 0
|
|
};
|
|
}
|
|
|
|
function getRadialCoords(el) {
|
|
return {
|
|
x1: el.getAttribute('fx') || el.getAttribute('cx') || '50%',
|
|
y1: el.getAttribute('fy') || el.getAttribute('cy') || '50%',
|
|
r1: 0,
|
|
x2: el.getAttribute('cx') || '50%',
|
|
y2: el.getAttribute('cy') || '50%',
|
|
r2: el.getAttribute('r') || '50%'
|
|
};
|
|
}
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Gradient class
|
|
* @class fabric.Gradient
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#gradients}
|
|
* @see {@link fabric.Gradient#initialize} for constructor definition
|
|
*/
|
|
fabric.Gradient = fabric.util.createClass(/** @lends fabric.Gradient.prototype */ {
|
|
|
|
/**
|
|
* Horizontal offset for aligning gradients coming from SVG when outside pathgroups
|
|
* @type Number
|
|
* @default 0
|
|
*/
|
|
offsetX: 0,
|
|
|
|
/**
|
|
* Vertical offset for aligning gradients coming from SVG when outside pathgroups
|
|
* @type Number
|
|
* @default 0
|
|
*/
|
|
offsetY: 0,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object} [options] Options object with type, coords, gradientUnits and colorStops
|
|
* @return {fabric.Gradient} thisArg
|
|
*/
|
|
initialize: function(options) {
|
|
options || (options = { });
|
|
|
|
var coords = { };
|
|
|
|
this.id = fabric.Object.__uid++;
|
|
this.type = options.type || 'linear';
|
|
|
|
coords = {
|
|
x1: options.coords.x1 || 0,
|
|
y1: options.coords.y1 || 0,
|
|
x2: options.coords.x2 || 0,
|
|
y2: options.coords.y2 || 0
|
|
};
|
|
|
|
if (this.type === 'radial') {
|
|
coords.r1 = options.coords.r1 || 0;
|
|
coords.r2 = options.coords.r2 || 0;
|
|
}
|
|
this.coords = coords;
|
|
this.colorStops = options.colorStops.slice();
|
|
if (options.gradientTransform) {
|
|
this.gradientTransform = options.gradientTransform;
|
|
}
|
|
this.offsetX = options.offsetX || this.offsetX;
|
|
this.offsetY = options.offsetY || this.offsetY;
|
|
},
|
|
|
|
/**
|
|
* Adds another colorStop
|
|
* @param {Object} colorStop Object with offset and color
|
|
* @return {fabric.Gradient} thisArg
|
|
*/
|
|
addColorStop: function(colorStop) {
|
|
for (var position in colorStop) {
|
|
var color = new fabric.Color(colorStop[position]);
|
|
this.colorStops.push({
|
|
offset: position,
|
|
color: color.toRgb(),
|
|
opacity: color.getAlpha()
|
|
});
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of a gradient
|
|
* @return {Object}
|
|
*/
|
|
toObject: function() {
|
|
return {
|
|
type: this.type,
|
|
coords: this.coords,
|
|
colorStops: this.colorStops,
|
|
offsetX: this.offsetX,
|
|
offsetY: this.offsetY
|
|
};
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns SVG representation of an gradient
|
|
* @param {Object} object Object to create a gradient for
|
|
* @param {Boolean} normalize Whether coords should be normalized
|
|
* @return {String} SVG representation of an gradient (linear/radial)
|
|
*/
|
|
toSVG: function(object) {
|
|
var coords = fabric.util.object.clone(this.coords),
|
|
markup, commonAttributes;
|
|
|
|
// colorStops must be sorted ascending
|
|
this.colorStops.sort(function(a, b) {
|
|
return a.offset - b.offset;
|
|
});
|
|
|
|
if (!(object.group && object.group.type === 'path-group')) {
|
|
for (var prop in coords) {
|
|
if (prop === 'x1' || prop === 'x2' || prop === 'r2') {
|
|
coords[prop] += this.offsetX - object.width / 2;
|
|
}
|
|
else if (prop === 'y1' || prop === 'y2') {
|
|
coords[prop] += this.offsetY - object.height / 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
commonAttributes = 'id="SVGID_' + this.id +
|
|
'" gradientUnits="userSpaceOnUse"';
|
|
if (this.gradientTransform) {
|
|
commonAttributes += ' gradientTransform="matrix(' + this.gradientTransform.join(' ') + ')" ';
|
|
}
|
|
if (this.type === 'linear') {
|
|
markup = [
|
|
//jscs:disable validateIndentation
|
|
'<linearGradient ',
|
|
commonAttributes,
|
|
' x1="', coords.x1,
|
|
'" y1="', coords.y1,
|
|
'" x2="', coords.x2,
|
|
'" y2="', coords.y2,
|
|
'">\n'
|
|
//jscs:enable validateIndentation
|
|
];
|
|
}
|
|
else if (this.type === 'radial') {
|
|
markup = [
|
|
//jscs:disable validateIndentation
|
|
'<radialGradient ',
|
|
commonAttributes,
|
|
' cx="', coords.x2,
|
|
'" cy="', coords.y2,
|
|
'" r="', coords.r2,
|
|
'" fx="', coords.x1,
|
|
'" fy="', coords.y1,
|
|
'">\n'
|
|
//jscs:enable validateIndentation
|
|
];
|
|
}
|
|
|
|
for (var i = 0; i < this.colorStops.length; i++) {
|
|
markup.push(
|
|
//jscs:disable validateIndentation
|
|
'<stop ',
|
|
'offset="', (this.colorStops[i].offset * 100) + '%',
|
|
'" style="stop-color:', this.colorStops[i].color,
|
|
(this.colorStops[i].opacity != null ? ';stop-opacity: ' + this.colorStops[i].opacity : ';'),
|
|
'"/>\n'
|
|
//jscs:enable validateIndentation
|
|
);
|
|
}
|
|
|
|
markup.push((this.type === 'linear' ? '</linearGradient>\n' : '</radialGradient>\n'));
|
|
|
|
return markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns an instance of CanvasGradient
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @return {CanvasGradient}
|
|
*/
|
|
toLive: function(ctx) {
|
|
var gradient;
|
|
|
|
if (!this.type) {
|
|
return;
|
|
}
|
|
|
|
if (this.type === 'linear') {
|
|
gradient = ctx.createLinearGradient(
|
|
this.coords.x1, this.coords.y1, this.coords.x2, this.coords.y2);
|
|
}
|
|
else if (this.type === 'radial') {
|
|
gradient = ctx.createRadialGradient(
|
|
this.coords.x1, this.coords.y1, this.coords.r1, this.coords.x2, this.coords.y2, this.coords.r2);
|
|
}
|
|
|
|
for (var i = 0, len = this.colorStops.length; i < len; i++) {
|
|
var color = this.colorStops[i].color,
|
|
opacity = this.colorStops[i].opacity,
|
|
offset = this.colorStops[i].offset;
|
|
|
|
if (typeof opacity !== 'undefined') {
|
|
color = new fabric.Color(color).setAlpha(opacity).toRgba();
|
|
}
|
|
gradient.addColorStop(parseFloat(offset), color);
|
|
}
|
|
|
|
return gradient;
|
|
}
|
|
});
|
|
|
|
fabric.util.object.extend(fabric.Gradient, {
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* Returns {@link fabric.Gradient} instance from an SVG element
|
|
* @static
|
|
* @memberof fabric.Gradient
|
|
* @param {SVGGradientElement} el SVG gradient element
|
|
* @param {fabric.Object} instance
|
|
* @return {fabric.Gradient} Gradient instance
|
|
* @see http://www.w3.org/TR/SVG/pservers.html#LinearGradientElement
|
|
* @see http://www.w3.org/TR/SVG/pservers.html#RadialGradientElement
|
|
*/
|
|
fromElement: function(el, instance) {
|
|
|
|
/**
|
|
* @example:
|
|
*
|
|
* <linearGradient id="linearGrad1">
|
|
* <stop offset="0%" stop-color="white"/>
|
|
* <stop offset="100%" stop-color="black"/>
|
|
* </linearGradient>
|
|
*
|
|
* OR
|
|
*
|
|
* <linearGradient id="linearGrad2">
|
|
* <stop offset="0" style="stop-color:rgb(255,255,255)"/>
|
|
* <stop offset="1" style="stop-color:rgb(0,0,0)"/>
|
|
* </linearGradient>
|
|
*
|
|
* OR
|
|
*
|
|
* <radialGradient id="radialGrad1">
|
|
* <stop offset="0%" stop-color="white" stop-opacity="1" />
|
|
* <stop offset="50%" stop-color="black" stop-opacity="0.5" />
|
|
* <stop offset="100%" stop-color="white" stop-opacity="1" />
|
|
* </radialGradient>
|
|
*
|
|
* OR
|
|
*
|
|
* <radialGradient id="radialGrad2">
|
|
* <stop offset="0" stop-color="rgb(255,255,255)" />
|
|
* <stop offset="0.5" stop-color="rgb(0,0,0)" />
|
|
* <stop offset="1" stop-color="rgb(255,255,255)" />
|
|
* </radialGradient>
|
|
*
|
|
*/
|
|
|
|
var colorStopEls = el.getElementsByTagName('stop'),
|
|
type = (el.nodeName === 'linearGradient' ? 'linear' : 'radial'),
|
|
gradientUnits = el.getAttribute('gradientUnits') || 'objectBoundingBox',
|
|
gradientTransform = el.getAttribute('gradientTransform'),
|
|
colorStops = [],
|
|
coords = { }, ellipseMatrix;
|
|
|
|
if (type === 'linear') {
|
|
coords = getLinearCoords(el);
|
|
}
|
|
else if (type === 'radial') {
|
|
coords = getRadialCoords(el);
|
|
}
|
|
|
|
for (var i = colorStopEls.length; i--; ) {
|
|
colorStops.push(getColorStop(colorStopEls[i]));
|
|
}
|
|
|
|
ellipseMatrix = _convertPercentUnitsToValues(instance, coords, gradientUnits);
|
|
|
|
var gradient = new fabric.Gradient({
|
|
type: type,
|
|
coords: coords,
|
|
colorStops: colorStops,
|
|
offsetX: -instance.left,
|
|
offsetY: -instance.top
|
|
});
|
|
|
|
if (gradientTransform || ellipseMatrix !== '') {
|
|
gradient.gradientTransform = fabric.parseTransformAttribute((gradientTransform || '') + ellipseMatrix);
|
|
}
|
|
return gradient;
|
|
},
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Returns {@link fabric.Gradient} instance from its object representation
|
|
* @static
|
|
* @memberof fabric.Gradient
|
|
* @param {Object} obj
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
forObject: function(obj, options) {
|
|
options || (options = { });
|
|
_convertPercentUnitsToValues(obj, options.coords, 'userSpaceOnUse');
|
|
return new fabric.Gradient(options);
|
|
}
|
|
});
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function _convertPercentUnitsToValues(object, options, gradientUnits) {
|
|
var propValue, addFactor = 0, multFactor = 1, ellipseMatrix = '';
|
|
for (var prop in options) {
|
|
propValue = parseFloat(options[prop], 10);
|
|
if (typeof options[prop] === 'string' && /^\d+%$/.test(options[prop])) {
|
|
multFactor = 0.01;
|
|
}
|
|
else {
|
|
multFactor = 1;
|
|
}
|
|
if (prop === 'x1' || prop === 'x2' || prop === 'r2') {
|
|
multFactor *= gradientUnits === 'objectBoundingBox' ? object.width : 1;
|
|
addFactor = gradientUnits === 'objectBoundingBox' ? object.left || 0 : 0;
|
|
}
|
|
else if (prop === 'y1' || prop === 'y2') {
|
|
multFactor *= gradientUnits === 'objectBoundingBox' ? object.height : 1;
|
|
addFactor = gradientUnits === 'objectBoundingBox' ? object.top || 0 : 0;
|
|
}
|
|
options[prop] = propValue * multFactor + addFactor;
|
|
}
|
|
if (object.type === 'ellipse' && options.r2 !== null && gradientUnits === 'objectBoundingBox' && object.rx !== object.ry) {
|
|
var scaleFactor = object.ry/object.rx;
|
|
ellipseMatrix = ' scale(1, ' + scaleFactor + ')';
|
|
if (options.y1) {
|
|
options.y1 /= scaleFactor;
|
|
}
|
|
if (options.y2) {
|
|
options.y2 /= scaleFactor;
|
|
}
|
|
}
|
|
return ellipseMatrix;
|
|
}
|
|
})();
|
|
|
|
|
|
/**
|
|
* Pattern class
|
|
* @class fabric.Pattern
|
|
* @see {@link http://fabricjs.com/patterns/|Pattern demo}
|
|
* @see {@link http://fabricjs.com/dynamic-patterns/|DynamicPattern demo}
|
|
* @see {@link fabric.Pattern#initialize} for constructor definition
|
|
*/
|
|
fabric.Pattern = fabric.util.createClass(/** @lends fabric.Pattern.prototype */ {
|
|
|
|
/**
|
|
* Repeat property of a pattern (one of repeat, repeat-x, repeat-y or no-repeat)
|
|
* @type String
|
|
* @default
|
|
*/
|
|
repeat: 'repeat',
|
|
|
|
/**
|
|
* Pattern horizontal offset from object's left/top corner
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
offsetX: 0,
|
|
|
|
/**
|
|
* Pattern vertical offset from object's left/top corner
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
offsetY: 0,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Pattern} thisArg
|
|
*/
|
|
initialize: function(options) {
|
|
options || (options = { });
|
|
|
|
this.id = fabric.Object.__uid++;
|
|
|
|
if (options.source) {
|
|
if (typeof options.source === 'string') {
|
|
// function string
|
|
if (typeof fabric.util.getFunctionBody(options.source) !== 'undefined') {
|
|
this.source = new Function(fabric.util.getFunctionBody(options.source));
|
|
}
|
|
else {
|
|
// img src string
|
|
var _this = this;
|
|
this.source = fabric.util.createImage();
|
|
fabric.util.loadImage(options.source, function(img) {
|
|
_this.source = img;
|
|
});
|
|
}
|
|
}
|
|
else {
|
|
// img element
|
|
this.source = options.source;
|
|
}
|
|
}
|
|
if (options.repeat) {
|
|
this.repeat = options.repeat;
|
|
}
|
|
if (options.offsetX) {
|
|
this.offsetX = options.offsetX;
|
|
}
|
|
if (options.offsetY) {
|
|
this.offsetY = options.offsetY;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of a pattern
|
|
* @return {Object} Object representation of a pattern instance
|
|
*/
|
|
toObject: function() {
|
|
|
|
var source;
|
|
|
|
// callback
|
|
if (typeof this.source === 'function') {
|
|
source = String(this.source);
|
|
}
|
|
// <img> element
|
|
else if (typeof this.source.src === 'string') {
|
|
source = this.source.src;
|
|
}
|
|
|
|
return {
|
|
source: source,
|
|
repeat: this.repeat,
|
|
offsetX: this.offsetX,
|
|
offsetY: this.offsetY
|
|
};
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns SVG representation of a pattern
|
|
* @param {fabric.Object} object
|
|
* @return {String} SVG representation of a pattern
|
|
*/
|
|
toSVG: function(object) {
|
|
var patternSource = typeof this.source === 'function' ? this.source() : this.source,
|
|
patternWidth = patternSource.width / object.getWidth(),
|
|
patternHeight = patternSource.height / object.getHeight(),
|
|
patternImgSrc = '';
|
|
|
|
if (patternSource.src) {
|
|
patternImgSrc = patternSource.src;
|
|
}
|
|
else if (patternSource.toDataURL) {
|
|
patternImgSrc = patternSource.toDataURL();
|
|
}
|
|
|
|
return '<pattern id="SVGID_' + this.id +
|
|
'" x="' + this.offsetX +
|
|
'" y="' + this.offsetY +
|
|
'" width="' + patternWidth +
|
|
'" height="' + patternHeight + '">' +
|
|
'<image x="0" y="0"' +
|
|
' width="' + patternSource.width +
|
|
'" height="' + patternSource.height +
|
|
'" xlink:href="' + patternImgSrc +
|
|
'"></image>' +
|
|
'</pattern>';
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns an instance of CanvasPattern
|
|
* @param {CanvasRenderingContext2D} ctx Context to create pattern
|
|
* @return {CanvasPattern}
|
|
*/
|
|
toLive: function(ctx) {
|
|
var source = typeof this.source === 'function'
|
|
? this.source()
|
|
: this.source;
|
|
|
|
// if the image failed to load, return, and allow rest to continue loading
|
|
if (!source) {
|
|
return '';
|
|
}
|
|
|
|
// if an image
|
|
if (typeof source.src !== 'undefined') {
|
|
if (!source.complete) {
|
|
return '';
|
|
}
|
|
if (source.naturalWidth === 0 || source.naturalHeight === 0) {
|
|
return '';
|
|
}
|
|
}
|
|
return ctx.createPattern(source, this.repeat);
|
|
}
|
|
});
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
if (fabric.Shadow) {
|
|
fabric.warn('fabric.Shadow is already defined.');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Shadow class
|
|
* @class fabric.Shadow
|
|
* @see {@link http://fabricjs.com/shadows/|Shadow demo}
|
|
* @see {@link fabric.Shadow#initialize} for constructor definition
|
|
*/
|
|
fabric.Shadow = fabric.util.createClass(/** @lends fabric.Shadow.prototype */ {
|
|
|
|
/**
|
|
* Shadow color
|
|
* @type String
|
|
* @default
|
|
*/
|
|
color: 'rgb(0,0,0)',
|
|
|
|
/**
|
|
* Shadow blur
|
|
* @type Number
|
|
*/
|
|
blur: 0,
|
|
|
|
/**
|
|
* Shadow horizontal offset
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
offsetX: 0,
|
|
|
|
/**
|
|
* Shadow vertical offset
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
offsetY: 0,
|
|
|
|
/**
|
|
* Whether the shadow should affect stroke operations
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
affectStroke: false,
|
|
|
|
/**
|
|
* Indicates whether toObject should include default values
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
includeDefaultValues: true,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object|String} [options] Options object with any of color, blur, offsetX, offsetX properties or string (e.g. "rgba(0,0,0,0.2) 2px 2px 10px, "2px 2px 10px rgba(0,0,0,0.2)")
|
|
* @return {fabric.Shadow} thisArg
|
|
*/
|
|
initialize: function(options) {
|
|
|
|
if (typeof options === 'string') {
|
|
options = this._parseShadow(options);
|
|
}
|
|
|
|
for (var prop in options) {
|
|
this[prop] = options[prop];
|
|
}
|
|
|
|
this.id = fabric.Object.__uid++;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} shadow Shadow value to parse
|
|
* @return {Object} Shadow object with color, offsetX, offsetY and blur
|
|
*/
|
|
_parseShadow: function(shadow) {
|
|
var shadowStr = shadow.trim(),
|
|
offsetsAndBlur = fabric.Shadow.reOffsetsAndBlur.exec(shadowStr) || [ ],
|
|
color = shadowStr.replace(fabric.Shadow.reOffsetsAndBlur, '') || 'rgb(0,0,0)';
|
|
|
|
return {
|
|
color: color.trim(),
|
|
offsetX: parseInt(offsetsAndBlur[1], 10) || 0,
|
|
offsetY: parseInt(offsetsAndBlur[2], 10) || 0,
|
|
blur: parseInt(offsetsAndBlur[3], 10) || 0
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Returns a string representation of an instance
|
|
* @see http://www.w3.org/TR/css-text-decor-3/#text-shadow
|
|
* @return {String} Returns CSS3 text-shadow declaration
|
|
*/
|
|
toString: function() {
|
|
return [this.offsetX, this.offsetY, this.blur, this.color].join('px ');
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns SVG representation of a shadow
|
|
* @param {fabric.Object} object
|
|
* @return {String} SVG representation of a shadow
|
|
*/
|
|
toSVG: function(object) {
|
|
var mode = 'SourceAlpha';
|
|
|
|
if (object && (object.fill === this.color || object.stroke === this.color)) {
|
|
mode = 'SourceGraphic';
|
|
}
|
|
|
|
return (
|
|
'<filter id="SVGID_' + this.id + '" y="-40%" height="180%">' +
|
|
'<feGaussianBlur in="' + mode + '" stdDeviation="' +
|
|
(this.blur ? this.blur / 3 : 0) +
|
|
'"></feGaussianBlur>' +
|
|
'<feOffset dx="' + this.offsetX + '" dy="' + this.offsetY + '"></feOffset>' +
|
|
'<feMerge>' +
|
|
'<feMergeNode></feMergeNode>' +
|
|
'<feMergeNode in="SourceGraphic"></feMergeNode>' +
|
|
'</feMerge>' +
|
|
'</filter>');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns object representation of a shadow
|
|
* @return {Object} Object representation of a shadow instance
|
|
*/
|
|
toObject: function() {
|
|
if (this.includeDefaultValues) {
|
|
return {
|
|
color: this.color,
|
|
blur: this.blur,
|
|
offsetX: this.offsetX,
|
|
offsetY: this.offsetY
|
|
};
|
|
}
|
|
var obj = { }, proto = fabric.Shadow.prototype;
|
|
if (this.color !== proto.color) {
|
|
obj.color = this.color;
|
|
}
|
|
if (this.blur !== proto.blur) {
|
|
obj.blur = this.blur;
|
|
}
|
|
if (this.offsetX !== proto.offsetX) {
|
|
obj.offsetX = this.offsetX;
|
|
}
|
|
if (this.offsetY !== proto.offsetY) {
|
|
obj.offsetY = this.offsetY;
|
|
}
|
|
return obj;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Regex matching shadow offsetX, offsetY and blur (ex: "2px 2px 10px rgba(0,0,0,0.2)", "rgb(0,255,0) 2px 2px")
|
|
* @static
|
|
* @field
|
|
* @memberOf fabric.Shadow
|
|
*/
|
|
fabric.Shadow.reOffsetsAndBlur = /(?:\s|^)(-?\d+(?:px)?(?:\s?|$))?(-?\d+(?:px)?(?:\s?|$))?(\d+(?:px)?)?(?:\s?|$)(?:$|\s)/;
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function () {
|
|
|
|
'use strict';
|
|
|
|
if (fabric.StaticCanvas) {
|
|
fabric.warn('fabric.StaticCanvas is already defined.');
|
|
return;
|
|
}
|
|
|
|
// aliases for faster resolution
|
|
var extend = fabric.util.object.extend,
|
|
getElementOffset = fabric.util.getElementOffset,
|
|
removeFromArray = fabric.util.removeFromArray,
|
|
|
|
CANVAS_INIT_ERROR = new Error('Could not initialize `canvas` element');
|
|
|
|
/**
|
|
* Static canvas class
|
|
* @class fabric.StaticCanvas
|
|
* @mixes fabric.Collection
|
|
* @mixes fabric.Observable
|
|
* @see {@link http://fabricjs.com/static_canvas/|StaticCanvas demo}
|
|
* @see {@link fabric.StaticCanvas#initialize} for constructor definition
|
|
* @fires before:render
|
|
* @fires after:render
|
|
* @fires canvas:cleared
|
|
* @fires object:added
|
|
* @fires object:removed
|
|
*/
|
|
fabric.StaticCanvas = fabric.util.createClass(/** @lends fabric.StaticCanvas.prototype */ {
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {HTMLElement | String} el <canvas> element to initialize instance on
|
|
* @param {Object} [options] Options object
|
|
* @return {Object} thisArg
|
|
*/
|
|
initialize: function(el, options) {
|
|
options || (options = { });
|
|
|
|
this._initStatic(el, options);
|
|
fabric.StaticCanvas.activeInstance = this;
|
|
},
|
|
|
|
/**
|
|
* Background color of canvas instance.
|
|
* Should be set via {@link fabric.StaticCanvas#setBackgroundColor}.
|
|
* @type {(String|fabric.Pattern)}
|
|
* @default
|
|
*/
|
|
backgroundColor: '',
|
|
|
|
/**
|
|
* Background image of canvas instance.
|
|
* Should be set via {@link fabric.StaticCanvas#setBackgroundImage}.
|
|
* <b>Backwards incompatibility note:</b> The "backgroundImageOpacity"
|
|
* and "backgroundImageStretch" properties are deprecated since 1.3.9.
|
|
* Use {@link fabric.Image#opacity}, {@link fabric.Image#width} and {@link fabric.Image#height}.
|
|
* @type fabric.Image
|
|
* @default
|
|
*/
|
|
backgroundImage: null,
|
|
|
|
/**
|
|
* Overlay color of canvas instance.
|
|
* Should be set via {@link fabric.StaticCanvas#setOverlayColor}
|
|
* @since 1.3.9
|
|
* @type {(String|fabric.Pattern)}
|
|
* @default
|
|
*/
|
|
overlayColor: '',
|
|
|
|
/**
|
|
* Overlay image of canvas instance.
|
|
* Should be set via {@link fabric.StaticCanvas#setOverlayImage}.
|
|
* <b>Backwards incompatibility note:</b> The "overlayImageLeft"
|
|
* and "overlayImageTop" properties are deprecated since 1.3.9.
|
|
* Use {@link fabric.Image#left} and {@link fabric.Image#top}.
|
|
* @type fabric.Image
|
|
* @default
|
|
*/
|
|
overlayImage: null,
|
|
|
|
/**
|
|
* Indicates whether toObject/toDatalessObject should include default values
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
includeDefaultValues: true,
|
|
|
|
/**
|
|
* Indicates whether objects' state should be saved
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
stateful: true,
|
|
|
|
/**
|
|
* Indicates whether {@link fabric.Collection.add}, {@link fabric.Collection.insertAt} and {@link fabric.Collection.remove} should also re-render canvas.
|
|
* Disabling this option could give a great performance boost when adding/removing a lot of objects to/from canvas at once
|
|
* (followed by a manual rendering after addition/deletion)
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
renderOnAddRemove: true,
|
|
|
|
/**
|
|
* Function that determines clipping of entire canvas area
|
|
* Being passed context as first argument. See clipping canvas area in {@link https://github.com/kangax/fabric.js/wiki/FAQ}
|
|
* @type Function
|
|
* @default
|
|
*/
|
|
clipTo: null,
|
|
|
|
/**
|
|
* Indicates whether object controls (borders/controls) are rendered above overlay image
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
controlsAboveOverlay: false,
|
|
|
|
/**
|
|
* Indicates whether the browser can be scrolled when using a touchscreen and dragging on the canvas
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
allowTouchScrolling: false,
|
|
|
|
/**
|
|
* Indicates whether this canvas will use image smoothing, this is on by default in browsers
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
imageSmoothingEnabled: true,
|
|
|
|
/**
|
|
* The transformation (in the format of Canvas transform) which focuses the viewport
|
|
* @type Array
|
|
* @default
|
|
*/
|
|
viewportTransform: [1, 0, 0, 1, 0, 0],
|
|
|
|
/**
|
|
* Callback; invoked right before object is about to be scaled/rotated
|
|
*/
|
|
onBeforeScaleRotate: function () {
|
|
/* NOOP */
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {HTMLElement | String} el <canvas> element to initialize instance on
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
_initStatic: function(el, options) {
|
|
this._objects = [];
|
|
|
|
this._createLowerCanvas(el);
|
|
this._initOptions(options);
|
|
this._setImageSmoothing();
|
|
|
|
if (options.overlayImage) {
|
|
this.setOverlayImage(options.overlayImage, this.renderAll.bind(this));
|
|
}
|
|
if (options.backgroundImage) {
|
|
this.setBackgroundImage(options.backgroundImage, this.renderAll.bind(this));
|
|
}
|
|
if (options.backgroundColor) {
|
|
this.setBackgroundColor(options.backgroundColor, this.renderAll.bind(this));
|
|
}
|
|
if (options.overlayColor) {
|
|
this.setOverlayColor(options.overlayColor, this.renderAll.bind(this));
|
|
}
|
|
this.calcOffset();
|
|
},
|
|
|
|
/**
|
|
* Calculates canvas element offset relative to the document
|
|
* This method is also attached as "resize" event handler of window
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable
|
|
*/
|
|
calcOffset: function () {
|
|
this._offset = getElementOffset(this.lowerCanvasEl);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets {@link fabric.StaticCanvas#overlayImage|overlay image} for this canvas
|
|
* @param {(fabric.Image|String)} image fabric.Image instance or URL of an image to set overlay to
|
|
* @param {Function} callback callback to invoke when image is loaded and set as an overlay
|
|
* @param {Object} [options] Optional options to set for the {@link fabric.Image|overlay image}.
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
* @see {@link http://jsfiddle.net/fabricjs/MnzHT/|jsFiddle demo}
|
|
* @example <caption>Normal overlayImage with left/top = 0</caption>
|
|
* canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), {
|
|
* // Needed to position overlayImage at 0/0
|
|
* originX: 'left',
|
|
* originY: 'top'
|
|
* });
|
|
* @example <caption>overlayImage with different properties</caption>
|
|
* canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), {
|
|
* opacity: 0.5,
|
|
* angle: 45,
|
|
* left: 400,
|
|
* top: 400,
|
|
* originX: 'left',
|
|
* originY: 'top'
|
|
* });
|
|
* @example <caption>Stretched overlayImage #1 - width/height correspond to canvas width/height</caption>
|
|
* fabric.Image.fromURL('http://fabricjs.com/assets/jail_cell_bars.png', function(img) {
|
|
* img.set({width: canvas.width, height: canvas.height, originX: 'left', originY: 'top'});
|
|
* canvas.setOverlayImage(img, canvas.renderAll.bind(canvas));
|
|
* });
|
|
* @example <caption>Stretched overlayImage #2 - width/height correspond to canvas width/height</caption>
|
|
* canvas.setOverlayImage('http://fabricjs.com/assets/jail_cell_bars.png', canvas.renderAll.bind(canvas), {
|
|
* width: canvas.width,
|
|
* height: canvas.height,
|
|
* // Needed to position overlayImage at 0/0
|
|
* originX: 'left',
|
|
* originY: 'top'
|
|
* });
|
|
*/
|
|
setOverlayImage: function (image, callback, options) {
|
|
return this.__setBgOverlayImage('overlayImage', image, callback, options);
|
|
},
|
|
|
|
/**
|
|
* Sets {@link fabric.StaticCanvas#backgroundImage|background image} for this canvas
|
|
* @param {(fabric.Image|String)} image fabric.Image instance or URL of an image to set background to
|
|
* @param {Function} callback Callback to invoke when image is loaded and set as background
|
|
* @param {Object} [options] Optional options to set for the {@link fabric.Image|background image}.
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
* @see {@link http://jsfiddle.net/fabricjs/YH9yD/|jsFiddle demo}
|
|
* @example <caption>Normal backgroundImage with left/top = 0</caption>
|
|
* canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), {
|
|
* // Needed to position backgroundImage at 0/0
|
|
* originX: 'left',
|
|
* originY: 'top'
|
|
* });
|
|
* @example <caption>backgroundImage with different properties</caption>
|
|
* canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), {
|
|
* opacity: 0.5,
|
|
* angle: 45,
|
|
* left: 400,
|
|
* top: 400,
|
|
* originX: 'left',
|
|
* originY: 'top'
|
|
* });
|
|
* @example <caption>Stretched backgroundImage #1 - width/height correspond to canvas width/height</caption>
|
|
* fabric.Image.fromURL('http://fabricjs.com/assets/honey_im_subtle.png', function(img) {
|
|
* img.set({width: canvas.width, height: canvas.height, originX: 'left', originY: 'top'});
|
|
* canvas.setBackgroundImage(img, canvas.renderAll.bind(canvas));
|
|
* });
|
|
* @example <caption>Stretched backgroundImage #2 - width/height correspond to canvas width/height</caption>
|
|
* canvas.setBackgroundImage('http://fabricjs.com/assets/honey_im_subtle.png', canvas.renderAll.bind(canvas), {
|
|
* width: canvas.width,
|
|
* height: canvas.height,
|
|
* // Needed to position backgroundImage at 0/0
|
|
* originX: 'left',
|
|
* originY: 'top'
|
|
* });
|
|
*/
|
|
setBackgroundImage: function (image, callback, options) {
|
|
return this.__setBgOverlayImage('backgroundImage', image, callback, options);
|
|
},
|
|
|
|
/**
|
|
* Sets {@link fabric.StaticCanvas#overlayColor|background color} for this canvas
|
|
* @param {(String|fabric.Pattern)} overlayColor Color or pattern to set background color to
|
|
* @param {Function} callback Callback to invoke when background color is set
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
* @see {@link http://jsfiddle.net/fabricjs/pB55h/|jsFiddle demo}
|
|
* @example <caption>Normal overlayColor - color value</caption>
|
|
* canvas.setOverlayColor('rgba(255, 73, 64, 0.6)', canvas.renderAll.bind(canvas));
|
|
* @example <caption>fabric.Pattern used as overlayColor</caption>
|
|
* canvas.setOverlayColor({
|
|
* source: 'http://fabricjs.com/assets/escheresque_ste.png'
|
|
* }, canvas.renderAll.bind(canvas));
|
|
* @example <caption>fabric.Pattern used as overlayColor with repeat and offset</caption>
|
|
* canvas.setOverlayColor({
|
|
* source: 'http://fabricjs.com/assets/escheresque_ste.png',
|
|
* repeat: 'repeat',
|
|
* offsetX: 200,
|
|
* offsetY: 100
|
|
* }, canvas.renderAll.bind(canvas));
|
|
*/
|
|
setOverlayColor: function(overlayColor, callback) {
|
|
return this.__setBgOverlayColor('overlayColor', overlayColor, callback);
|
|
},
|
|
|
|
/**
|
|
* Sets {@link fabric.StaticCanvas#backgroundColor|background color} for this canvas
|
|
* @param {(String|fabric.Pattern)} backgroundColor Color or pattern to set background color to
|
|
* @param {Function} callback Callback to invoke when background color is set
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
* @see {@link http://jsfiddle.net/fabricjs/hXzvk/|jsFiddle demo}
|
|
* @example <caption>Normal backgroundColor - color value</caption>
|
|
* canvas.setBackgroundColor('rgba(255, 73, 64, 0.6)', canvas.renderAll.bind(canvas));
|
|
* @example <caption>fabric.Pattern used as backgroundColor</caption>
|
|
* canvas.setBackgroundColor({
|
|
* source: 'http://fabricjs.com/assets/escheresque_ste.png'
|
|
* }, canvas.renderAll.bind(canvas));
|
|
* @example <caption>fabric.Pattern used as backgroundColor with repeat and offset</caption>
|
|
* canvas.setBackgroundColor({
|
|
* source: 'http://fabricjs.com/assets/escheresque_ste.png',
|
|
* repeat: 'repeat',
|
|
* offsetX: 200,
|
|
* offsetY: 100
|
|
* }, canvas.renderAll.bind(canvas));
|
|
*/
|
|
setBackgroundColor: function(backgroundColor, callback) {
|
|
return this.__setBgOverlayColor('backgroundColor', backgroundColor, callback);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @see {@link http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-context-2d-imagesmoothingenabled|WhatWG Canvas Standard}
|
|
*/
|
|
_setImageSmoothing: function(){
|
|
var ctx = this.getContext();
|
|
|
|
ctx.imageSmoothingEnabled = this.imageSmoothingEnabled;
|
|
ctx.webkitImageSmoothingEnabled = this.imageSmoothingEnabled;
|
|
ctx.mozImageSmoothingEnabled = this.imageSmoothingEnabled;
|
|
ctx.msImageSmoothingEnabled = this.imageSmoothingEnabled;
|
|
ctx.oImageSmoothingEnabled = this.imageSmoothingEnabled;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} property Property to set ({@link fabric.StaticCanvas#backgroundImage|backgroundImage}
|
|
* or {@link fabric.StaticCanvas#overlayImage|overlayImage})
|
|
* @param {(fabric.Image|String|null)} image fabric.Image instance, URL of an image or null to set background or overlay to
|
|
* @param {Function} callback Callback to invoke when image is loaded and set as background or overlay
|
|
* @param {Object} [options] Optional options to set for the {@link fabric.Image|image}.
|
|
*/
|
|
__setBgOverlayImage: function(property, image, callback, options) {
|
|
if (typeof image === 'string') {
|
|
fabric.util.loadImage(image, function(img) {
|
|
this[property] = new fabric.Image(img, options);
|
|
callback && callback();
|
|
}, this);
|
|
}
|
|
else {
|
|
this[property] = image;
|
|
callback && callback();
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} property Property to set ({@link fabric.StaticCanvas#backgroundColor|backgroundColor}
|
|
* or {@link fabric.StaticCanvas#overlayColor|overlayColor})
|
|
* @param {(Object|String|null)} color Object with pattern information, color value or null
|
|
* @param {Function} [callback] Callback is invoked when color is set
|
|
*/
|
|
__setBgOverlayColor: function(property, color, callback) {
|
|
if (color && color.source) {
|
|
var _this = this;
|
|
fabric.util.loadImage(color.source, function(img) {
|
|
_this[property] = new fabric.Pattern({
|
|
source: img,
|
|
repeat: color.repeat,
|
|
offsetX: color.offsetX,
|
|
offsetY: color.offsetY
|
|
});
|
|
callback && callback();
|
|
});
|
|
}
|
|
else {
|
|
this[property] = color;
|
|
callback && callback();
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_createCanvasElement: function() {
|
|
var element = fabric.document.createElement('canvas');
|
|
if (!element.style) {
|
|
element.style = { };
|
|
}
|
|
if (!element) {
|
|
throw CANVAS_INIT_ERROR;
|
|
}
|
|
this._initCanvasElement(element);
|
|
return element;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {HTMLElement} element
|
|
*/
|
|
_initCanvasElement: function(element) {
|
|
fabric.util.createCanvasElement(element);
|
|
|
|
if (typeof element.getContext === 'undefined') {
|
|
throw CANVAS_INIT_ERROR;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
_initOptions: function (options) {
|
|
for (var prop in options) {
|
|
this[prop] = options[prop];
|
|
}
|
|
|
|
this.width = this.width || parseInt(this.lowerCanvasEl.width, 10) || 0;
|
|
this.height = this.height || parseInt(this.lowerCanvasEl.height, 10) || 0;
|
|
|
|
if (!this.lowerCanvasEl.style) {
|
|
return;
|
|
}
|
|
|
|
this.lowerCanvasEl.width = this.width;
|
|
this.lowerCanvasEl.height = this.height;
|
|
|
|
this.lowerCanvasEl.style.width = this.width + 'px';
|
|
this.lowerCanvasEl.style.height = this.height + 'px';
|
|
|
|
this.viewportTransform = this.viewportTransform.slice();
|
|
},
|
|
|
|
/**
|
|
* Creates a bottom canvas
|
|
* @private
|
|
* @param {HTMLElement} [canvasEl]
|
|
*/
|
|
_createLowerCanvas: function (canvasEl) {
|
|
this.lowerCanvasEl = fabric.util.getById(canvasEl) || this._createCanvasElement();
|
|
this._initCanvasElement(this.lowerCanvasEl);
|
|
|
|
fabric.util.addClass(this.lowerCanvasEl, 'lower-canvas');
|
|
|
|
if (this.interactive) {
|
|
this._applyCanvasStyle(this.lowerCanvasEl);
|
|
}
|
|
|
|
this.contextContainer = this.lowerCanvasEl.getContext('2d');
|
|
},
|
|
|
|
/**
|
|
* Returns canvas width (in px)
|
|
* @return {Number}
|
|
*/
|
|
getWidth: function () {
|
|
return this.width;
|
|
},
|
|
|
|
/**
|
|
* Returns canvas height (in px)
|
|
* @return {Number}
|
|
*/
|
|
getHeight: function () {
|
|
return this.height;
|
|
},
|
|
|
|
/**
|
|
* Sets width of this canvas instance
|
|
* @param {Number|String} value Value to set width to
|
|
* @param {Object} [options] Options object
|
|
* @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions
|
|
* @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
setWidth: function (value, options) {
|
|
return this.setDimensions({ width: value }, options);
|
|
},
|
|
|
|
/**
|
|
* Sets height of this canvas instance
|
|
* @param {Number|String} value Value to set height to
|
|
* @param {Object} [options] Options object
|
|
* @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions
|
|
* @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
setHeight: function (value, options) {
|
|
return this.setDimensions({ height: value }, options);
|
|
},
|
|
|
|
/**
|
|
* Sets dimensions (width, height) of this canvas instance. when options.cssOnly flag active you should also supply the unit of measure (px/%/em)
|
|
* @param {Object} dimensions Object with width/height properties
|
|
* @param {Number|String} [dimensions.width] Width of canvas element
|
|
* @param {Number|String} [dimensions.height] Height of canvas element
|
|
* @param {Object} [options] Options object
|
|
* @param {Boolean} [options.backstoreOnly=false] Set the given dimensions only as canvas backstore dimensions
|
|
* @param {Boolean} [options.cssOnly=false] Set the given dimensions only as css dimensions
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
setDimensions: function (dimensions, options) {
|
|
var cssValue;
|
|
|
|
options = options || {};
|
|
|
|
for (var prop in dimensions) {
|
|
cssValue = dimensions[prop];
|
|
|
|
if (!options.cssOnly) {
|
|
this._setBackstoreDimension(prop, dimensions[prop]);
|
|
cssValue += 'px';
|
|
}
|
|
|
|
if (!options.backstoreOnly) {
|
|
this._setCssDimension(prop, cssValue);
|
|
}
|
|
}
|
|
|
|
if (!options.cssOnly) {
|
|
this.renderAll();
|
|
}
|
|
|
|
this.calcOffset();
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Helper for setting width/height
|
|
* @private
|
|
* @param {String} prop property (width|height)
|
|
* @param {Number} value value to set property to
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
_setBackstoreDimension: function (prop, value) {
|
|
this.lowerCanvasEl[prop] = value;
|
|
|
|
if (this.upperCanvasEl) {
|
|
this.upperCanvasEl[prop] = value;
|
|
}
|
|
|
|
if (this.cacheCanvasEl) {
|
|
this.cacheCanvasEl[prop] = value;
|
|
}
|
|
|
|
this[prop] = value;
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Helper for setting css width/height
|
|
* @private
|
|
* @param {String} prop property (width|height)
|
|
* @param {String} value value to set property to
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
_setCssDimension: function (prop, value) {
|
|
this.lowerCanvasEl.style[prop] = value;
|
|
|
|
if (this.upperCanvasEl) {
|
|
this.upperCanvasEl.style[prop] = value;
|
|
}
|
|
|
|
if (this.wrapperEl) {
|
|
this.wrapperEl.style[prop] = value;
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns canvas zoom level
|
|
* @return {Number}
|
|
*/
|
|
getZoom: function () {
|
|
return Math.sqrt(this.viewportTransform[0] * this.viewportTransform[3]);
|
|
},
|
|
|
|
/**
|
|
* Sets viewport transform of this canvas instance
|
|
* @param {Array} vpt the transform in the form of context.transform
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
setViewportTransform: function (vpt) {
|
|
this.viewportTransform = vpt;
|
|
this.renderAll();
|
|
for (var i = 0, len = this._objects.length; i < len; i++) {
|
|
this._objects[i].setCoords();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets zoom level of this canvas instance, zoom centered around point
|
|
* @param {fabric.Point} point to zoom with respect to
|
|
* @param {Number} value to set zoom to, less than 1 zooms out
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
zoomToPoint: function (point, value) {
|
|
// TODO: just change the scale, preserve other transformations
|
|
var before = point;
|
|
point = fabric.util.transformPoint(point, fabric.util.invertTransform(this.viewportTransform));
|
|
this.viewportTransform[0] = value;
|
|
this.viewportTransform[3] = value;
|
|
var after = fabric.util.transformPoint(point, this.viewportTransform);
|
|
this.viewportTransform[4] += before.x - after.x;
|
|
this.viewportTransform[5] += before.y - after.y;
|
|
this.renderAll();
|
|
for (var i = 0, len = this._objects.length; i < len; i++) {
|
|
this._objects[i].setCoords();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets zoom level of this canvas instance
|
|
* @param {Number} value to set zoom to, less than 1 zooms out
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
setZoom: function (value) {
|
|
this.zoomToPoint(new fabric.Point(0, 0), value);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Pan viewport so as to place point at top left corner of canvas
|
|
* @param {fabric.Point} point to move to
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
absolutePan: function (point) {
|
|
this.viewportTransform[4] = -point.x;
|
|
this.viewportTransform[5] = -point.y;
|
|
this.renderAll();
|
|
for (var i = 0, len = this._objects.length; i < len; i++) {
|
|
this._objects[i].setCoords();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Pans viewpoint relatively
|
|
* @param {fabric.Point} point (position vector) to move by
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable true
|
|
*/
|
|
relativePan: function (point) {
|
|
return this.absolutePan(new fabric.Point(
|
|
-point.x - this.viewportTransform[4],
|
|
-point.y - this.viewportTransform[5]
|
|
));
|
|
},
|
|
|
|
/**
|
|
* Returns <canvas> element corresponding to this instance
|
|
* @return {HTMLCanvasElement}
|
|
*/
|
|
getElement: function () {
|
|
return this.lowerCanvasEl;
|
|
},
|
|
|
|
/**
|
|
* Returns currently selected object, if any
|
|
* @return {fabric.Object}
|
|
*/
|
|
getActiveObject: function() {
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Returns currently selected group of object, if any
|
|
* @return {fabric.Group}
|
|
*/
|
|
getActiveGroup: function() {
|
|
return null;
|
|
},
|
|
|
|
/**
|
|
* Given a context, renders an object on that context
|
|
* @param {CanvasRenderingContext2D} ctx Context to render object on
|
|
* @param {fabric.Object} object Object to render
|
|
* @private
|
|
*/
|
|
_draw: function (ctx, object) {
|
|
if (!object) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
var v = this.viewportTransform;
|
|
ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);
|
|
object.render(ctx);
|
|
ctx.restore();
|
|
if (!this.controlsAboveOverlay) {
|
|
object._renderControls(ctx);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {fabric.Object} obj Object that was added
|
|
*/
|
|
_onObjectAdded: function(obj) {
|
|
this.stateful && obj.setupState();
|
|
obj.canvas = this;
|
|
obj.setCoords();
|
|
this.fire('object:added', { target: obj });
|
|
obj.fire('added');
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {fabric.Object} obj Object that was removed
|
|
*/
|
|
_onObjectRemoved: function(obj) {
|
|
// removing active object should fire "selection:cleared" events
|
|
if (this.getActiveObject() === obj) {
|
|
this.fire('before:selection:cleared', { target: obj });
|
|
this._discardActiveObject();
|
|
this.fire('selection:cleared');
|
|
}
|
|
|
|
this.fire('object:removed', { target: obj });
|
|
obj.fire('removed');
|
|
},
|
|
|
|
/**
|
|
* Clears specified context of canvas element
|
|
* @param {CanvasRenderingContext2D} ctx Context to clear
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
clearContext: function(ctx) {
|
|
ctx.clearRect(0, 0, this.width, this.height);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns context of canvas where objects are drawn
|
|
* @return {CanvasRenderingContext2D}
|
|
*/
|
|
getContext: function () {
|
|
return this.contextContainer;
|
|
},
|
|
|
|
/**
|
|
* Clears all contexts (background, main, top) of an instance
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
clear: function () {
|
|
this._objects.length = 0;
|
|
if (this.discardActiveGroup) {
|
|
this.discardActiveGroup();
|
|
}
|
|
if (this.discardActiveObject) {
|
|
this.discardActiveObject();
|
|
}
|
|
this.clearContext(this.contextContainer);
|
|
if (this.contextTop) {
|
|
this.clearContext(this.contextTop);
|
|
}
|
|
this.fire('canvas:cleared');
|
|
this.renderAll();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Renders both the top canvas and the secondary container canvas.
|
|
* @param {Boolean} [allOnTop] Whether we want to force all images to be rendered on the top canvas
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable
|
|
*/
|
|
renderAll: function (allOnTop) {
|
|
var canvasToDrawOn = this[(allOnTop === true && this.interactive) ? 'contextTop' : 'contextContainer'],
|
|
activeGroup = this.getActiveGroup();
|
|
|
|
if (this.contextTop && this.selection && !this._groupSelector) {
|
|
this.clearContext(this.contextTop);
|
|
}
|
|
|
|
if (!allOnTop) {
|
|
this.clearContext(canvasToDrawOn);
|
|
}
|
|
|
|
this.fire('before:render');
|
|
|
|
if (this.clipTo) {
|
|
fabric.util.clipContext(this, canvasToDrawOn);
|
|
}
|
|
|
|
this._renderBackground(canvasToDrawOn);
|
|
this._renderObjects(canvasToDrawOn, activeGroup);
|
|
this._renderActiveGroup(canvasToDrawOn, activeGroup);
|
|
|
|
if (this.clipTo) {
|
|
canvasToDrawOn.restore();
|
|
}
|
|
|
|
this._renderOverlay(canvasToDrawOn);
|
|
|
|
if (this.controlsAboveOverlay && this.interactive) {
|
|
this.drawControls(canvasToDrawOn);
|
|
}
|
|
|
|
this.fire('after:render');
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {fabric.Group} activeGroup
|
|
*/
|
|
_renderObjects: function(ctx, activeGroup) {
|
|
var i, length;
|
|
|
|
// fast path
|
|
if (!activeGroup) {
|
|
for (i = 0, length = this._objects.length; i < length; ++i) {
|
|
this._draw(ctx, this._objects[i]);
|
|
}
|
|
}
|
|
else {
|
|
for (i = 0, length = this._objects.length; i < length; ++i) {
|
|
if (this._objects[i] && !activeGroup.contains(this._objects[i])) {
|
|
this._draw(ctx, this._objects[i]);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {fabric.Group} activeGroup
|
|
*/
|
|
_renderActiveGroup: function(ctx, activeGroup) {
|
|
|
|
// delegate rendering to group selection (if one exists)
|
|
if (activeGroup) {
|
|
|
|
//Store objects in group preserving order, then replace
|
|
var sortedObjects = [];
|
|
this.forEachObject(function (object) {
|
|
if (activeGroup.contains(object)) {
|
|
sortedObjects.push(object);
|
|
}
|
|
});
|
|
activeGroup._set('objects', sortedObjects);
|
|
this._draw(ctx, activeGroup);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderBackground: function(ctx) {
|
|
if (this.backgroundColor) {
|
|
ctx.fillStyle = this.backgroundColor.toLive
|
|
? this.backgroundColor.toLive(ctx)
|
|
: this.backgroundColor;
|
|
|
|
ctx.fillRect(
|
|
this.backgroundColor.offsetX || 0,
|
|
this.backgroundColor.offsetY || 0,
|
|
this.width,
|
|
this.height);
|
|
}
|
|
if (this.backgroundImage) {
|
|
this._draw(ctx, this.backgroundImage);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderOverlay: function(ctx) {
|
|
if (this.overlayColor) {
|
|
ctx.fillStyle = this.overlayColor.toLive
|
|
? this.overlayColor.toLive(ctx)
|
|
: this.overlayColor;
|
|
|
|
ctx.fillRect(
|
|
this.overlayColor.offsetX || 0,
|
|
this.overlayColor.offsetY || 0,
|
|
this.width,
|
|
this.height);
|
|
}
|
|
if (this.overlayImage) {
|
|
this._draw(ctx, this.overlayImage);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Method to render only the top canvas.
|
|
* Also used to render the group selection box.
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
renderTop: function () {
|
|
var ctx = this.contextTop || this.contextContainer;
|
|
this.clearContext(ctx);
|
|
|
|
// we render the top context - last object
|
|
if (this.selection && this._groupSelector) {
|
|
this._drawSelection();
|
|
}
|
|
|
|
// delegate rendering to group selection if one exists
|
|
// used for drawing selection borders/controls
|
|
var activeGroup = this.getActiveGroup();
|
|
if (activeGroup) {
|
|
activeGroup.render(ctx);
|
|
}
|
|
|
|
this._renderOverlay(ctx);
|
|
|
|
this.fire('after:render');
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns coordinates of a center of canvas.
|
|
* Returned value is an object with top and left properties
|
|
* @return {Object} object with "top" and "left" number values
|
|
*/
|
|
getCenter: function () {
|
|
return {
|
|
top: this.getHeight() / 2,
|
|
left: this.getWidth() / 2
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Centers object horizontally.
|
|
* You might need to call `setCoords` on an object after centering, to update controls area.
|
|
* @param {fabric.Object} object Object to center horizontally
|
|
* @return {fabric.Canvas} thisArg
|
|
*/
|
|
centerObjectH: function (object) {
|
|
this._centerObject(object, new fabric.Point(this.getCenter().left, object.getCenterPoint().y));
|
|
this.renderAll();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Centers object vertically.
|
|
* You might need to call `setCoords` on an object after centering, to update controls area.
|
|
* @param {fabric.Object} object Object to center vertically
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
centerObjectV: function (object) {
|
|
this._centerObject(object, new fabric.Point(object.getCenterPoint().x, this.getCenter().top));
|
|
this.renderAll();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Centers object vertically and horizontally.
|
|
* You might need to call `setCoords` on an object after centering, to update controls area.
|
|
* @param {fabric.Object} object Object to center vertically and horizontally
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
centerObject: function(object) {
|
|
var center = this.getCenter();
|
|
|
|
this._centerObject(object, new fabric.Point(center.left, center.top));
|
|
this.renderAll();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {fabric.Object} object Object to center
|
|
* @param {fabric.Point} center Center point
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
_centerObject: function(object, center) {
|
|
object.setPositionByOrigin(center, 'center', 'center');
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returs dataless JSON representation of canvas
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {String} json string
|
|
*/
|
|
toDatalessJSON: function (propertiesToInclude) {
|
|
return this.toDatalessObject(propertiesToInclude);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of canvas
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toObject: function (propertiesToInclude) {
|
|
return this._toObjectMethod('toObject', propertiesToInclude);
|
|
},
|
|
|
|
/**
|
|
* Returns dataless object representation of canvas
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toDatalessObject: function (propertiesToInclude) {
|
|
return this._toObjectMethod('toDatalessObject', propertiesToInclude);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_toObjectMethod: function (methodName, propertiesToInclude) {
|
|
|
|
var activeGroup = this.getActiveGroup();
|
|
if (activeGroup) {
|
|
this.discardActiveGroup();
|
|
}
|
|
|
|
var data = {
|
|
objects: this._toObjects(methodName, propertiesToInclude)
|
|
};
|
|
|
|
extend(data, this.__serializeBgOverlay());
|
|
|
|
fabric.util.populateWithProperties(this, data, propertiesToInclude);
|
|
|
|
if (activeGroup) {
|
|
this.setActiveGroup(new fabric.Group(activeGroup.getObjects(), {
|
|
originX: 'center',
|
|
originY: 'center'
|
|
}));
|
|
activeGroup.forEachObject(function(o) {
|
|
o.set('active', true);
|
|
});
|
|
|
|
if (this._currentTransform) {
|
|
this._currentTransform.target = this.getActiveGroup();
|
|
}
|
|
}
|
|
|
|
return data;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_toObjects: function(methodName, propertiesToInclude) {
|
|
return this.getObjects().map(function(instance) {
|
|
return this._toObject(instance, methodName, propertiesToInclude);
|
|
}, this);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_toObject: function(instance, methodName, propertiesToInclude) {
|
|
var originalValue;
|
|
|
|
if (!this.includeDefaultValues) {
|
|
originalValue = instance.includeDefaultValues;
|
|
instance.includeDefaultValues = false;
|
|
}
|
|
var object = instance[methodName](propertiesToInclude);
|
|
if (!this.includeDefaultValues) {
|
|
instance.includeDefaultValues = originalValue;
|
|
}
|
|
return object;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
__serializeBgOverlay: function() {
|
|
var data = {
|
|
background: (this.backgroundColor && this.backgroundColor.toObject)
|
|
? this.backgroundColor.toObject()
|
|
: this.backgroundColor
|
|
};
|
|
|
|
if (this.overlayColor) {
|
|
data.overlay = this.overlayColor.toObject
|
|
? this.overlayColor.toObject()
|
|
: this.overlayColor;
|
|
}
|
|
if (this.backgroundImage) {
|
|
data.backgroundImage = this.backgroundImage.toObject();
|
|
}
|
|
if (this.overlayImage) {
|
|
data.overlayImage = this.overlayImage.toObject();
|
|
}
|
|
|
|
return data;
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* When true, getSvgTransform() will apply the StaticCanvas.viewportTransform to the SVG transformation. When true,
|
|
* a zoomed canvas will then produce zoomed SVG output.
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
svgViewportTransformation: true,
|
|
|
|
/**
|
|
* Returns SVG representation of canvas
|
|
* @function
|
|
* @param {Object} [options] Options object for SVG output
|
|
* @param {Boolean} [options.suppressPreamble=false] If true xml tag is not included
|
|
* @param {Object} [options.viewBox] SVG viewbox object
|
|
* @param {Number} [options.viewBox.x] x-cooridnate of viewbox
|
|
* @param {Number} [options.viewBox.y] y-coordinate of viewbox
|
|
* @param {Number} [options.viewBox.width] Width of viewbox
|
|
* @param {Number} [options.viewBox.height] Height of viewbox
|
|
* @param {String} [options.encoding=UTF-8] Encoding of SVG output
|
|
* @param {Function} [reviver] Method for further parsing of svg elements, called after each fabric object converted into svg representation.
|
|
* @return {String} SVG string
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-3/#serialization}
|
|
* @see {@link http://jsfiddle.net/fabricjs/jQ3ZZ/|jsFiddle demo}
|
|
* @example <caption>Normal SVG output</caption>
|
|
* var svg = canvas.toSVG();
|
|
* @example <caption>SVG output without preamble (without <?xml ../>)</caption>
|
|
* var svg = canvas.toSVG({suppressPreamble: true});
|
|
* @example <caption>SVG output with viewBox attribute</caption>
|
|
* var svg = canvas.toSVG({
|
|
* viewBox: {
|
|
* x: 100,
|
|
* y: 100,
|
|
* width: 200,
|
|
* height: 300
|
|
* }
|
|
* });
|
|
* @example <caption>SVG output with different encoding (default: UTF-8)</caption>
|
|
* var svg = canvas.toSVG({encoding: 'ISO-8859-1'});
|
|
* @example <caption>Modify SVG output with reviver function</caption>
|
|
* var svg = canvas.toSVG(null, function(svg) {
|
|
* return svg.replace('stroke-dasharray: ; stroke-linecap: butt; stroke-linejoin: miter; stroke-miterlimit: 10; ', '');
|
|
* });
|
|
*/
|
|
toSVG: function(options, reviver) {
|
|
options || (options = { });
|
|
|
|
var markup = [];
|
|
|
|
this._setSVGPreamble(markup, options);
|
|
this._setSVGHeader(markup, options);
|
|
|
|
this._setSVGBgOverlayColor(markup, 'backgroundColor');
|
|
this._setSVGBgOverlayImage(markup, 'backgroundImage');
|
|
|
|
this._setSVGObjects(markup, reviver);
|
|
|
|
this._setSVGBgOverlayColor(markup, 'overlayColor');
|
|
this._setSVGBgOverlayImage(markup, 'overlayImage');
|
|
|
|
markup.push('</svg>');
|
|
|
|
return markup.join('');
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setSVGPreamble: function(markup, options) {
|
|
if (!options.suppressPreamble) {
|
|
markup.push(
|
|
'<?xml version="1.0" encoding="', (options.encoding || 'UTF-8'), '" standalone="no" ?>',
|
|
'<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" ',
|
|
'"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n'
|
|
);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setSVGHeader: function(markup, options) {
|
|
var width, height, vpt;
|
|
|
|
if (options.viewBox) {
|
|
width = options.viewBox.width;
|
|
height = options.viewBox.height;
|
|
}
|
|
else {
|
|
width = this.width;
|
|
height = this.height;
|
|
if (!this.svgViewportTransformation) {
|
|
vpt = this.viewportTransform;
|
|
width /= vpt[0];
|
|
height /= vpt[3];
|
|
}
|
|
}
|
|
|
|
markup.push(
|
|
'<svg ',
|
|
'xmlns="http://www.w3.org/2000/svg" ',
|
|
'xmlns:xlink="http://www.w3.org/1999/xlink" ',
|
|
'version="1.1" ',
|
|
'width="', width, '" ',
|
|
'height="', height, '" ',
|
|
(this.backgroundColor && !this.backgroundColor.toLive
|
|
? 'style="background-color: ' + this.backgroundColor + '" '
|
|
: null),
|
|
(options.viewBox
|
|
? 'viewBox="' +
|
|
options.viewBox.x + ' ' +
|
|
options.viewBox.y + ' ' +
|
|
options.viewBox.width + ' ' +
|
|
options.viewBox.height + '" '
|
|
: null),
|
|
'xml:space="preserve">',
|
|
'<desc>Created with Fabric.js ', fabric.version, '</desc>',
|
|
'<defs>',
|
|
fabric.createSVGFontFacesMarkup(this.getObjects()),
|
|
fabric.createSVGRefElementsMarkup(this),
|
|
'</defs>'
|
|
);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setSVGObjects: function(markup, reviver) {
|
|
var activeGroup = this.getActiveGroup();
|
|
if (activeGroup) {
|
|
this.discardActiveGroup();
|
|
}
|
|
for (var i = 0, objects = this.getObjects(), len = objects.length; i < len; i++) {
|
|
markup.push(objects[i].toSVG(reviver));
|
|
}
|
|
if (activeGroup) {
|
|
this.setActiveGroup(new fabric.Group(activeGroup.getObjects()));
|
|
activeGroup.forEachObject(function(o) {
|
|
o.set('active', true);
|
|
});
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setSVGBgOverlayImage: function(markup, property) {
|
|
if (this[property] && this[property].toSVG) {
|
|
markup.push(this[property].toSVG());
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setSVGBgOverlayColor: function(markup, property) {
|
|
if (this[property] && this[property].source) {
|
|
markup.push(
|
|
'<rect x="', this[property].offsetX, '" y="', this[property].offsetY, '" ',
|
|
'width="',
|
|
(this[property].repeat === 'repeat-y' || this[property].repeat === 'no-repeat'
|
|
? this[property].source.width
|
|
: this.width),
|
|
'" height="',
|
|
(this[property].repeat === 'repeat-x' || this[property].repeat === 'no-repeat'
|
|
? this[property].source.height
|
|
: this.height),
|
|
'" fill="url(#' + property + 'Pattern)"',
|
|
'></rect>'
|
|
);
|
|
}
|
|
else if (this[property] && property === 'overlayColor') {
|
|
markup.push(
|
|
'<rect x="0" y="0" ',
|
|
'width="', this.width,
|
|
'" height="', this.height,
|
|
'" fill="', this[property], '"',
|
|
'></rect>'
|
|
);
|
|
}
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Moves an object to the bottom of the stack of drawn objects
|
|
* @param {fabric.Object} object Object to send to back
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
sendToBack: function (object) {
|
|
removeFromArray(this._objects, object);
|
|
this._objects.unshift(object);
|
|
return this.renderAll && this.renderAll();
|
|
},
|
|
|
|
/**
|
|
* Moves an object to the top of the stack of drawn objects
|
|
* @param {fabric.Object} object Object to send
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
bringToFront: function (object) {
|
|
removeFromArray(this._objects, object);
|
|
this._objects.push(object);
|
|
return this.renderAll && this.renderAll();
|
|
},
|
|
|
|
/**
|
|
* Moves an object down in stack of drawn objects
|
|
* @param {fabric.Object} object Object to send
|
|
* @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
sendBackwards: function (object, intersecting) {
|
|
var idx = this._objects.indexOf(object);
|
|
|
|
// if object is not on the bottom of stack
|
|
if (idx !== 0) {
|
|
var newIdx = this._findNewLowerIndex(object, idx, intersecting);
|
|
|
|
removeFromArray(this._objects, object);
|
|
this._objects.splice(newIdx, 0, object);
|
|
this.renderAll && this.renderAll();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_findNewLowerIndex: function(object, idx, intersecting) {
|
|
var newIdx;
|
|
|
|
if (intersecting) {
|
|
newIdx = idx;
|
|
|
|
// traverse down the stack looking for the nearest intersecting object
|
|
for (var i = idx - 1; i >= 0; --i) {
|
|
|
|
var isIntersecting = object.intersectsWithObject(this._objects[i]) ||
|
|
object.isContainedWithinObject(this._objects[i]) ||
|
|
this._objects[i].isContainedWithinObject(object);
|
|
|
|
if (isIntersecting) {
|
|
newIdx = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
newIdx = idx - 1;
|
|
}
|
|
|
|
return newIdx;
|
|
},
|
|
|
|
/**
|
|
* Moves an object up in stack of drawn objects
|
|
* @param {fabric.Object} object Object to send
|
|
* @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
bringForward: function (object, intersecting) {
|
|
var idx = this._objects.indexOf(object);
|
|
|
|
// if object is not on top of stack (last item in an array)
|
|
if (idx !== this._objects.length - 1) {
|
|
var newIdx = this._findNewUpperIndex(object, idx, intersecting);
|
|
|
|
removeFromArray(this._objects, object);
|
|
this._objects.splice(newIdx, 0, object);
|
|
this.renderAll && this.renderAll();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_findNewUpperIndex: function(object, idx, intersecting) {
|
|
var newIdx;
|
|
|
|
if (intersecting) {
|
|
newIdx = idx;
|
|
|
|
// traverse up the stack looking for the nearest intersecting object
|
|
for (var i = idx + 1; i < this._objects.length; ++i) {
|
|
|
|
var isIntersecting = object.intersectsWithObject(this._objects[i]) ||
|
|
object.isContainedWithinObject(this._objects[i]) ||
|
|
this._objects[i].isContainedWithinObject(object);
|
|
|
|
if (isIntersecting) {
|
|
newIdx = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
newIdx = idx + 1;
|
|
}
|
|
|
|
return newIdx;
|
|
},
|
|
|
|
/**
|
|
* Moves an object to specified level in stack of drawn objects
|
|
* @param {fabric.Object} object Object to send
|
|
* @param {Number} index Position to move to
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
moveTo: function (object, index) {
|
|
removeFromArray(this._objects, object);
|
|
this._objects.splice(index, 0, object);
|
|
return this.renderAll && this.renderAll();
|
|
},
|
|
|
|
/**
|
|
* Clears a canvas element and removes all event listeners
|
|
* @return {fabric.Canvas} thisArg
|
|
* @chainable
|
|
*/
|
|
dispose: function () {
|
|
this.clear();
|
|
this.interactive && this.removeListeners();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns a string representation of an instance
|
|
* @return {String} string representation of an instance
|
|
*/
|
|
toString: function () {
|
|
return '#<fabric.Canvas (' + this.complexity() + '): ' +
|
|
'{ objects: ' + this.getObjects().length + ' }>';
|
|
}
|
|
});
|
|
|
|
extend(fabric.StaticCanvas.prototype, fabric.Observable);
|
|
extend(fabric.StaticCanvas.prototype, fabric.Collection);
|
|
extend(fabric.StaticCanvas.prototype, fabric.DataURLExporter);
|
|
|
|
extend(fabric.StaticCanvas, /** @lends fabric.StaticCanvas */ {
|
|
|
|
/**
|
|
* @static
|
|
* @type String
|
|
* @default
|
|
*/
|
|
EMPTY_JSON: '{"objects": [], "background": "white"}',
|
|
|
|
/**
|
|
* Provides a way to check support of some of the canvas methods
|
|
* (either those of HTMLCanvasElement itself, or rendering context)
|
|
*
|
|
* @param {String} methodName Method to check support for;
|
|
* Could be one of "getImageData", "toDataURL", "toDataURLWithQuality" or "setLineDash"
|
|
* @return {Boolean | null} `true` if method is supported (or at least exists),
|
|
* `null` if canvas element or context can not be initialized
|
|
*/
|
|
supports: function (methodName) {
|
|
var el = fabric.util.createCanvasElement();
|
|
|
|
if (!el || !el.getContext) {
|
|
return null;
|
|
}
|
|
|
|
var ctx = el.getContext('2d');
|
|
if (!ctx) {
|
|
return null;
|
|
}
|
|
|
|
switch (methodName) {
|
|
|
|
case 'getImageData':
|
|
return typeof ctx.getImageData !== 'undefined';
|
|
|
|
case 'setLineDash':
|
|
return typeof ctx.setLineDash !== 'undefined';
|
|
|
|
case 'toDataURL':
|
|
return typeof el.toDataURL !== 'undefined';
|
|
|
|
case 'toDataURLWithQuality':
|
|
try {
|
|
el.toDataURL('image/jpeg', 0);
|
|
return true;
|
|
}
|
|
catch (e) { }
|
|
return false;
|
|
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns JSON representation of canvas
|
|
* @function
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {String} JSON string
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-3/#serialization}
|
|
* @see {@link http://jsfiddle.net/fabricjs/pec86/|jsFiddle demo}
|
|
* @example <caption>JSON without additional properties</caption>
|
|
* var json = canvas.toJSON();
|
|
* @example <caption>JSON with additional properties included</caption>
|
|
* var json = canvas.toJSON(['lockMovementX', 'lockMovementY', 'lockRotation', 'lockScalingX', 'lockScalingY', 'lockUniScaling']);
|
|
* @example <caption>JSON without default values</caption>
|
|
* canvas.includeDefaultValues = false;
|
|
* var json = canvas.toJSON();
|
|
*/
|
|
fabric.StaticCanvas.prototype.toJSON = fabric.StaticCanvas.prototype.toObject;
|
|
|
|
})();
|
|
|
|
|
|
/**
|
|
* BaseBrush class
|
|
* @class fabric.BaseBrush
|
|
* @see {@link http://fabricjs.com/freedrawing/|Freedrawing demo}
|
|
*/
|
|
fabric.BaseBrush = fabric.util.createClass(/** @lends fabric.BaseBrush.prototype */ {
|
|
|
|
/**
|
|
* Color of a brush
|
|
* @type String
|
|
* @default
|
|
*/
|
|
color: 'rgb(0, 0, 0)',
|
|
|
|
/**
|
|
* Width of a brush
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
width: 1,
|
|
|
|
/**
|
|
* Shadow object representing shadow of this shape.
|
|
* <b>Backwards incompatibility note:</b> This property replaces "shadowColor" (String), "shadowOffsetX" (Number),
|
|
* "shadowOffsetY" (Number) and "shadowBlur" (Number) since v1.2.12
|
|
* @type fabric.Shadow
|
|
* @default
|
|
*/
|
|
shadow: null,
|
|
|
|
/**
|
|
* Line endings style of a brush (one of "butt", "round", "square")
|
|
* @type String
|
|
* @default
|
|
*/
|
|
strokeLineCap: 'round',
|
|
|
|
/**
|
|
* Corner style of a brush (one of "bevil", "round", "miter")
|
|
* @type String
|
|
* @default
|
|
*/
|
|
strokeLineJoin: 'round',
|
|
|
|
/**
|
|
* Sets shadow of an object
|
|
* @param {Object|String} [options] Options object or string (e.g. "2px 2px 10px rgba(0,0,0,0.2)")
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
setShadow: function(options) {
|
|
this.shadow = new fabric.Shadow(options);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets brush styles
|
|
* @private
|
|
*/
|
|
_setBrushStyles: function() {
|
|
var ctx = this.canvas.contextTop;
|
|
|
|
ctx.strokeStyle = this.color;
|
|
ctx.lineWidth = this.width;
|
|
ctx.lineCap = this.strokeLineCap;
|
|
ctx.lineJoin = this.strokeLineJoin;
|
|
},
|
|
|
|
/**
|
|
* Sets brush shadow styles
|
|
* @private
|
|
*/
|
|
_setShadow: function() {
|
|
if (!this.shadow) {
|
|
return;
|
|
}
|
|
|
|
var ctx = this.canvas.contextTop;
|
|
|
|
ctx.shadowColor = this.shadow.color;
|
|
ctx.shadowBlur = this.shadow.blur;
|
|
ctx.shadowOffsetX = this.shadow.offsetX;
|
|
ctx.shadowOffsetY = this.shadow.offsetY;
|
|
},
|
|
|
|
/**
|
|
* Removes brush shadow styles
|
|
* @private
|
|
*/
|
|
_resetShadow: function() {
|
|
var ctx = this.canvas.contextTop;
|
|
|
|
ctx.shadowColor = '';
|
|
ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0;
|
|
}
|
|
});
|
|
|
|
|
|
(function() {
|
|
|
|
var utilMin = fabric.util.array.min,
|
|
utilMax = fabric.util.array.max;
|
|
|
|
/**
|
|
* PencilBrush class
|
|
* @class fabric.PencilBrush
|
|
* @extends fabric.BaseBrush
|
|
*/
|
|
fabric.PencilBrush = fabric.util.createClass(fabric.BaseBrush, /** @lends fabric.PencilBrush.prototype */ {
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {fabric.Canvas} canvas
|
|
* @return {fabric.PencilBrush} Instance of a pencil brush
|
|
*/
|
|
initialize: function(canvas) {
|
|
this.canvas = canvas;
|
|
this._points = [ ];
|
|
},
|
|
|
|
/**
|
|
* Inovoked on mouse down
|
|
* @param {Object} pointer
|
|
*/
|
|
onMouseDown: function(pointer) {
|
|
this._prepareForDrawing(pointer);
|
|
// capture coordinates immediately
|
|
// this allows to draw dots (when movement never occurs)
|
|
this._captureDrawingPath(pointer);
|
|
this._render();
|
|
},
|
|
|
|
/**
|
|
* Inovoked on mouse move
|
|
* @param {Object} pointer
|
|
*/
|
|
onMouseMove: function(pointer) {
|
|
this._captureDrawingPath(pointer);
|
|
// redraw curve
|
|
// clear top canvas
|
|
this.canvas.clearContext(this.canvas.contextTop);
|
|
this._render();
|
|
},
|
|
|
|
/**
|
|
* Invoked on mouse up
|
|
*/
|
|
onMouseUp: function() {
|
|
this._finalizeAndAddPath();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} pointer Actual mouse position related to the canvas.
|
|
*/
|
|
_prepareForDrawing: function(pointer) {
|
|
|
|
var p = new fabric.Point(pointer.x, pointer.y);
|
|
|
|
this._reset();
|
|
this._addPoint(p);
|
|
|
|
this.canvas.contextTop.moveTo(p.x, p.y);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {fabric.Point} point Point to be added to points array
|
|
*/
|
|
_addPoint: function(point) {
|
|
this._points.push(point);
|
|
},
|
|
|
|
/**
|
|
* Clear points array and set contextTop canvas style.
|
|
* @private
|
|
*/
|
|
_reset: function() {
|
|
this._points.length = 0;
|
|
|
|
this._setBrushStyles();
|
|
this._setShadow();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} pointer Actual mouse position related to the canvas.
|
|
*/
|
|
_captureDrawingPath: function(pointer) {
|
|
var pointerPoint = new fabric.Point(pointer.x, pointer.y);
|
|
this._addPoint(pointerPoint);
|
|
},
|
|
|
|
/**
|
|
* Draw a smooth path on the topCanvas using quadraticCurveTo
|
|
* @private
|
|
*/
|
|
_render: function() {
|
|
var ctx = this.canvas.contextTop,
|
|
v = this.canvas.viewportTransform,
|
|
p1 = this._points[0],
|
|
p2 = this._points[1];
|
|
|
|
ctx.save();
|
|
ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);
|
|
ctx.beginPath();
|
|
|
|
//if we only have 2 points in the path and they are the same
|
|
//it means that the user only clicked the canvas without moving the mouse
|
|
//then we should be drawing a dot. A path isn't drawn between two identical dots
|
|
//that's why we set them apart a bit
|
|
if (this._points.length === 2 && p1.x === p2.x && p1.y === p2.y) {
|
|
p1.x -= 0.5;
|
|
p2.x += 0.5;
|
|
}
|
|
ctx.moveTo(p1.x, p1.y);
|
|
|
|
for (var i = 1, len = this._points.length; i < len; i++) {
|
|
// we pick the point between pi + 1 & pi + 2 as the
|
|
// end point and p1 as our control point.
|
|
var midPoint = p1.midPointFrom(p2);
|
|
ctx.quadraticCurveTo(p1.x, p1.y, midPoint.x, midPoint.y);
|
|
|
|
p1 = this._points[i];
|
|
p2 = this._points[i + 1];
|
|
}
|
|
// Draw last line as a straight line while
|
|
// we wait for the next point to be able to calculate
|
|
// the bezier control point
|
|
ctx.lineTo(p1.x, p1.y);
|
|
ctx.stroke();
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Return an SVG path based on our captured points and their bounding box
|
|
* @private
|
|
*/
|
|
_getSVGPathData: function() {
|
|
this.box = this.getPathBoundingBox(this._points);
|
|
return this.convertPointsToSVGPath(
|
|
this._points, this.box.minX, this.box.minY);
|
|
},
|
|
|
|
/**
|
|
* Returns bounding box of a path based on given points
|
|
* @param {Array} points Array of points
|
|
* @return {Object} Object with minX, minY, maxX, maxY
|
|
*/
|
|
getPathBoundingBox: function(points) {
|
|
var xBounds = [],
|
|
yBounds = [],
|
|
p1 = points[0],
|
|
p2 = points[1],
|
|
startPoint = p1;
|
|
|
|
for (var i = 1, len = points.length; i < len; i++) {
|
|
var midPoint = p1.midPointFrom(p2);
|
|
// with startPoint, p1 as control point, midpoint as end point
|
|
xBounds.push(startPoint.x);
|
|
xBounds.push(midPoint.x);
|
|
yBounds.push(startPoint.y);
|
|
yBounds.push(midPoint.y);
|
|
|
|
p1 = points[i];
|
|
p2 = points[i + 1];
|
|
startPoint = midPoint;
|
|
}
|
|
|
|
xBounds.push(p1.x);
|
|
yBounds.push(p1.y);
|
|
|
|
return {
|
|
minX: utilMin(xBounds),
|
|
minY: utilMin(yBounds),
|
|
maxX: utilMax(xBounds),
|
|
maxY: utilMax(yBounds)
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Converts points to SVG path
|
|
* @param {Array} points Array of points
|
|
* @param {Number} minX
|
|
* @param {Number} minY
|
|
* @return {String} SVG path
|
|
*/
|
|
convertPointsToSVGPath: function(points, minX, minY) {
|
|
var path = [],
|
|
p1 = new fabric.Point(points[0].x - minX, points[0].y - minY),
|
|
p2 = new fabric.Point(points[1].x - minX, points[1].y - minY);
|
|
|
|
path.push('M ', points[0].x - minX, ' ', points[0].y - minY, ' ');
|
|
for (var i = 1, len = points.length; i < len; i++) {
|
|
var midPoint = p1.midPointFrom(p2);
|
|
// p1 is our bezier control point
|
|
// midpoint is our endpoint
|
|
// start point is p(i-1) value.
|
|
path.push('Q ', p1.x, ' ', p1.y, ' ', midPoint.x, ' ', midPoint.y, ' ');
|
|
p1 = new fabric.Point(points[i].x - minX, points[i].y - minY);
|
|
if ((i + 1) < points.length) {
|
|
p2 = new fabric.Point(points[i + 1].x - minX, points[i + 1].y - minY);
|
|
}
|
|
}
|
|
path.push('L ', p1.x, ' ', p1.y, ' ');
|
|
return path;
|
|
},
|
|
|
|
/**
|
|
* Creates fabric.Path object to add on canvas
|
|
* @param {String} pathData Path data
|
|
* @return {fabric.Path} Path to add on canvas
|
|
*/
|
|
createPath: function(pathData) {
|
|
var path = new fabric.Path(pathData);
|
|
path.fill = null;
|
|
path.stroke = this.color;
|
|
path.strokeWidth = this.width;
|
|
path.strokeLineCap = this.strokeLineCap;
|
|
path.strokeLineJoin = this.strokeLineJoin;
|
|
|
|
if (this.shadow) {
|
|
this.shadow.affectStroke = true;
|
|
path.setShadow(this.shadow);
|
|
}
|
|
|
|
return path;
|
|
},
|
|
|
|
/**
|
|
* On mouseup after drawing the path on contextTop canvas
|
|
* we use the points captured to create an new fabric path object
|
|
* and add it to the fabric canvas.
|
|
*/
|
|
_finalizeAndAddPath: function() {
|
|
var ctx = this.canvas.contextTop;
|
|
ctx.closePath();
|
|
|
|
var pathData = this._getSVGPathData().join('');
|
|
if (pathData === 'M 0 0 Q 0 0 0 0 L 0 0') {
|
|
// do not create 0 width/height paths, as they are
|
|
// rendered inconsistently across browsers
|
|
// Firefox 4, for example, renders a dot,
|
|
// whereas Chrome 10 renders nothing
|
|
this.canvas.renderAll();
|
|
return;
|
|
}
|
|
|
|
// set path origin coordinates based on our bounding box
|
|
var originLeft = this.box.minX + (this.box.maxX - this.box.minX) / 2,
|
|
originTop = this.box.minY + (this.box.maxY - this.box.minY) / 2;
|
|
|
|
this.canvas.contextTop.arc(originLeft, originTop, 3, 0, Math.PI * 2, false);
|
|
|
|
var path = this.createPath(pathData);
|
|
path.set({
|
|
left: originLeft,
|
|
top: originTop,
|
|
originX: 'center',
|
|
originY: 'center'
|
|
});
|
|
|
|
this.canvas.add(path);
|
|
path.setCoords();
|
|
|
|
this.canvas.clearContext(this.canvas.contextTop);
|
|
this._resetShadow();
|
|
this.canvas.renderAll();
|
|
|
|
// fire event 'path' created
|
|
this.canvas.fire('path:created', { path: path });
|
|
}
|
|
});
|
|
})();
|
|
|
|
|
|
/**
|
|
* CircleBrush class
|
|
* @class fabric.CircleBrush
|
|
*/
|
|
fabric.CircleBrush = fabric.util.createClass(fabric.BaseBrush, /** @lends fabric.CircleBrush.prototype */ {
|
|
|
|
/**
|
|
* Width of a brush
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
width: 10,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {fabric.Canvas} canvas
|
|
* @return {fabric.CircleBrush} Instance of a circle brush
|
|
*/
|
|
initialize: function(canvas) {
|
|
this.canvas = canvas;
|
|
this.points = [ ];
|
|
},
|
|
/**
|
|
* Invoked inside on mouse down and mouse move
|
|
* @param {Object} pointer
|
|
*/
|
|
drawDot: function(pointer) {
|
|
var point = this.addPoint(pointer),
|
|
ctx = this.canvas.contextTop,
|
|
v = this.canvas.viewportTransform;
|
|
ctx.save();
|
|
ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);
|
|
|
|
ctx.fillStyle = point.fill;
|
|
ctx.beginPath();
|
|
ctx.arc(point.x, point.y, point.radius, 0, Math.PI * 2, false);
|
|
ctx.closePath();
|
|
ctx.fill();
|
|
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Invoked on mouse down
|
|
*/
|
|
onMouseDown: function(pointer) {
|
|
this.points.length = 0;
|
|
this.canvas.clearContext(this.canvas.contextTop);
|
|
this._setShadow();
|
|
this.drawDot(pointer);
|
|
},
|
|
|
|
/**
|
|
* Invoked on mouse move
|
|
* @param {Object} pointer
|
|
*/
|
|
onMouseMove: function(pointer) {
|
|
this.drawDot(pointer);
|
|
},
|
|
|
|
/**
|
|
* Invoked on mouse up
|
|
*/
|
|
onMouseUp: function() {
|
|
var originalRenderOnAddRemove = this.canvas.renderOnAddRemove;
|
|
this.canvas.renderOnAddRemove = false;
|
|
|
|
var circles = [ ];
|
|
|
|
for (var i = 0, len = this.points.length; i < len; i++) {
|
|
var point = this.points[i],
|
|
circle = new fabric.Circle({
|
|
radius: point.radius,
|
|
left: point.x,
|
|
top: point.y,
|
|
originX: 'center',
|
|
originY: 'center',
|
|
fill: point.fill
|
|
});
|
|
|
|
this.shadow && circle.setShadow(this.shadow);
|
|
|
|
circles.push(circle);
|
|
}
|
|
var group = new fabric.Group(circles, { originX: 'center', originY: 'center' });
|
|
group.canvas = this.canvas;
|
|
|
|
this.canvas.add(group);
|
|
this.canvas.fire('path:created', { path: group });
|
|
|
|
this.canvas.clearContext(this.canvas.contextTop);
|
|
this._resetShadow();
|
|
this.canvas.renderOnAddRemove = originalRenderOnAddRemove;
|
|
this.canvas.renderAll();
|
|
},
|
|
|
|
/**
|
|
* @param {Object} pointer
|
|
* @return {fabric.Point} Just added pointer point
|
|
*/
|
|
addPoint: function(pointer) {
|
|
var pointerPoint = new fabric.Point(pointer.x, pointer.y),
|
|
|
|
circleRadius = fabric.util.getRandomInt(
|
|
Math.max(0, this.width - 20), this.width + 20) / 2,
|
|
|
|
circleColor = new fabric.Color(this.color)
|
|
.setAlpha(fabric.util.getRandomInt(0, 100) / 100)
|
|
.toRgba();
|
|
|
|
pointerPoint.radius = circleRadius;
|
|
pointerPoint.fill = circleColor;
|
|
|
|
this.points.push(pointerPoint);
|
|
|
|
return pointerPoint;
|
|
}
|
|
});
|
|
|
|
|
|
/**
|
|
* SprayBrush class
|
|
* @class fabric.SprayBrush
|
|
*/
|
|
fabric.SprayBrush = fabric.util.createClass( fabric.BaseBrush, /** @lends fabric.SprayBrush.prototype */ {
|
|
|
|
/**
|
|
* Width of a spray
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
width: 10,
|
|
|
|
/**
|
|
* Density of a spray (number of dots per chunk)
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
density: 20,
|
|
|
|
/**
|
|
* Width of spray dots
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
dotWidth: 1,
|
|
|
|
/**
|
|
* Width variance of spray dots
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
dotWidthVariance: 1,
|
|
|
|
/**
|
|
* Whether opacity of a dot should be random
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
randomOpacity: false,
|
|
|
|
/**
|
|
* Whether overlapping dots (rectangles) should be removed (for performance reasons)
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
optimizeOverlapping: true,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {fabric.Canvas} canvas
|
|
* @return {fabric.SprayBrush} Instance of a spray brush
|
|
*/
|
|
initialize: function(canvas) {
|
|
this.canvas = canvas;
|
|
this.sprayChunks = [ ];
|
|
},
|
|
|
|
/**
|
|
* Invoked on mouse down
|
|
* @param {Object} pointer
|
|
*/
|
|
onMouseDown: function(pointer) {
|
|
this.sprayChunks.length = 0;
|
|
this.canvas.clearContext(this.canvas.contextTop);
|
|
this._setShadow();
|
|
|
|
this.addSprayChunk(pointer);
|
|
this.render();
|
|
},
|
|
|
|
/**
|
|
* Invoked on mouse move
|
|
* @param {Object} pointer
|
|
*/
|
|
onMouseMove: function(pointer) {
|
|
this.addSprayChunk(pointer);
|
|
this.render();
|
|
},
|
|
|
|
/**
|
|
* Invoked on mouse up
|
|
*/
|
|
onMouseUp: function() {
|
|
var originalRenderOnAddRemove = this.canvas.renderOnAddRemove;
|
|
this.canvas.renderOnAddRemove = false;
|
|
|
|
var rects = [ ];
|
|
|
|
for (var i = 0, ilen = this.sprayChunks.length; i < ilen; i++) {
|
|
var sprayChunk = this.sprayChunks[i];
|
|
|
|
for (var j = 0, jlen = sprayChunk.length; j < jlen; j++) {
|
|
|
|
var rect = new fabric.Rect({
|
|
width: sprayChunk[j].width,
|
|
height: sprayChunk[j].width,
|
|
left: sprayChunk[j].x + 1,
|
|
top: sprayChunk[j].y + 1,
|
|
originX: 'center',
|
|
originY: 'center',
|
|
fill: this.color
|
|
});
|
|
|
|
this.shadow && rect.setShadow(this.shadow);
|
|
rects.push(rect);
|
|
}
|
|
}
|
|
|
|
if (this.optimizeOverlapping) {
|
|
rects = this._getOptimizedRects(rects);
|
|
}
|
|
|
|
var group = new fabric.Group(rects, { originX: 'center', originY: 'center' });
|
|
group.canvas = this.canvas;
|
|
|
|
this.canvas.add(group);
|
|
this.canvas.fire('path:created', { path: group });
|
|
|
|
this.canvas.clearContext(this.canvas.contextTop);
|
|
this._resetShadow();
|
|
this.canvas.renderOnAddRemove = originalRenderOnAddRemove;
|
|
this.canvas.renderAll();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Array} rects
|
|
*/
|
|
_getOptimizedRects: function(rects) {
|
|
|
|
// avoid creating duplicate rects at the same coordinates
|
|
var uniqueRects = { }, key;
|
|
|
|
for (var i = 0, len = rects.length; i < len; i++) {
|
|
key = rects[i].left + '' + rects[i].top;
|
|
if (!uniqueRects[key]) {
|
|
uniqueRects[key] = rects[i];
|
|
}
|
|
}
|
|
var uniqueRectsArray = [ ];
|
|
for (key in uniqueRects) {
|
|
uniqueRectsArray.push(uniqueRects[key]);
|
|
}
|
|
|
|
return uniqueRectsArray;
|
|
},
|
|
|
|
/**
|
|
* Renders brush
|
|
*/
|
|
render: function() {
|
|
var ctx = this.canvas.contextTop;
|
|
ctx.fillStyle = this.color;
|
|
|
|
var v = this.canvas.viewportTransform;
|
|
ctx.save();
|
|
ctx.transform(v[0], v[1], v[2], v[3], v[4], v[5]);
|
|
|
|
for (var i = 0, len = this.sprayChunkPoints.length; i < len; i++) {
|
|
var point = this.sprayChunkPoints[i];
|
|
if (typeof point.opacity !== 'undefined') {
|
|
ctx.globalAlpha = point.opacity;
|
|
}
|
|
ctx.fillRect(point.x, point.y, point.width, point.width);
|
|
}
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* @param {Object} pointer
|
|
*/
|
|
addSprayChunk: function(pointer) {
|
|
this.sprayChunkPoints = [ ];
|
|
|
|
var x, y, width, radius = this.width / 2;
|
|
|
|
for (var i = 0; i < this.density; i++) {
|
|
|
|
x = fabric.util.getRandomInt(pointer.x - radius, pointer.x + radius);
|
|
y = fabric.util.getRandomInt(pointer.y - radius, pointer.y + radius);
|
|
|
|
if (this.dotWidthVariance) {
|
|
width = fabric.util.getRandomInt(
|
|
// bottom clamp width to 1
|
|
Math.max(1, this.dotWidth - this.dotWidthVariance),
|
|
this.dotWidth + this.dotWidthVariance);
|
|
}
|
|
else {
|
|
width = this.dotWidth;
|
|
}
|
|
|
|
var point = new fabric.Point(x, y);
|
|
point.width = width;
|
|
|
|
if (this.randomOpacity) {
|
|
point.opacity = fabric.util.getRandomInt(0, 100) / 100;
|
|
}
|
|
|
|
this.sprayChunkPoints.push(point);
|
|
}
|
|
|
|
this.sprayChunks.push(this.sprayChunkPoints);
|
|
}
|
|
});
|
|
|
|
|
|
/**
|
|
* PatternBrush class
|
|
* @class fabric.PatternBrush
|
|
* @extends fabric.BaseBrush
|
|
*/
|
|
fabric.PatternBrush = fabric.util.createClass(fabric.PencilBrush, /** @lends fabric.PatternBrush.prototype */ {
|
|
|
|
getPatternSrc: function() {
|
|
|
|
var dotWidth = 20,
|
|
dotDistance = 5,
|
|
patternCanvas = fabric.document.createElement('canvas'),
|
|
patternCtx = patternCanvas.getContext('2d');
|
|
|
|
patternCanvas.width = patternCanvas.height = dotWidth + dotDistance;
|
|
|
|
patternCtx.fillStyle = this.color;
|
|
patternCtx.beginPath();
|
|
patternCtx.arc(dotWidth / 2, dotWidth / 2, dotWidth / 2, 0, Math.PI * 2, false);
|
|
patternCtx.closePath();
|
|
patternCtx.fill();
|
|
|
|
return patternCanvas;
|
|
},
|
|
|
|
getPatternSrcFunction: function() {
|
|
return String(this.getPatternSrc).replace('this.color', '"' + this.color + '"');
|
|
},
|
|
|
|
/**
|
|
* Creates "pattern" instance property
|
|
*/
|
|
getPattern: function() {
|
|
return this.canvas.contextTop.createPattern(this.source || this.getPatternSrc(), 'repeat');
|
|
},
|
|
|
|
/**
|
|
* Sets brush styles
|
|
*/
|
|
_setBrushStyles: function() {
|
|
this.callSuper('_setBrushStyles');
|
|
this.canvas.contextTop.strokeStyle = this.getPattern();
|
|
},
|
|
|
|
/**
|
|
* Creates path
|
|
*/
|
|
createPath: function(pathData) {
|
|
var path = this.callSuper('createPath', pathData);
|
|
path.stroke = new fabric.Pattern({
|
|
source: this.source || this.getPatternSrcFunction()
|
|
});
|
|
return path;
|
|
}
|
|
});
|
|
|
|
|
|
fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ {
|
|
|
|
/**
|
|
* Exports canvas element to a dataurl image. Note that when multiplier is used, cropping is scaled appropriately
|
|
* @param {Object} [options] Options object
|
|
* @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png"
|
|
* @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg.
|
|
* @param {Number} [options.multiplier=1] Multiplier to scale by
|
|
* @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14
|
|
* @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14
|
|
* @param {Number} [options.width] Cropping width. Introduced in v1.2.14
|
|
* @param {Number} [options.height] Cropping height. Introduced in v1.2.14
|
|
* @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format
|
|
* @see {@link http://jsfiddle.net/fabricjs/NfZVb/|jsFiddle demo}
|
|
* @example <caption>Generate jpeg dataURL with lower quality</caption>
|
|
* var dataURL = canvas.toDataURL({
|
|
* format: 'jpeg',
|
|
* quality: 0.8
|
|
* });
|
|
* @example <caption>Generate cropped png dataURL (clipping of canvas)</caption>
|
|
* var dataURL = canvas.toDataURL({
|
|
* format: 'png',
|
|
* left: 100,
|
|
* top: 100,
|
|
* width: 200,
|
|
* height: 200
|
|
* });
|
|
* @example <caption>Generate double scaled png dataURL</caption>
|
|
* var dataURL = canvas.toDataURL({
|
|
* format: 'png',
|
|
* multiplier: 2
|
|
* });
|
|
*/
|
|
toDataURL: function (options) {
|
|
options || (options = { });
|
|
|
|
var format = options.format || 'png',
|
|
quality = options.quality || 1,
|
|
multiplier = options.multiplier || 1,
|
|
cropping = {
|
|
left: options.left,
|
|
top: options.top,
|
|
width: options.width,
|
|
height: options.height
|
|
};
|
|
|
|
if (multiplier !== 1) {
|
|
return this.__toDataURLWithMultiplier(format, quality, cropping, multiplier);
|
|
}
|
|
else {
|
|
return this.__toDataURL(format, quality, cropping);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
__toDataURL: function(format, quality, cropping) {
|
|
|
|
this.renderAll(true);
|
|
|
|
var canvasEl = this.upperCanvasEl || this.lowerCanvasEl,
|
|
croppedCanvasEl = this.__getCroppedCanvas(canvasEl, cropping);
|
|
|
|
// to avoid common confusion https://github.com/kangax/fabric.js/issues/806
|
|
if (format === 'jpg') {
|
|
format = 'jpeg';
|
|
}
|
|
|
|
var data = (fabric.StaticCanvas.supports('toDataURLWithQuality'))
|
|
? (croppedCanvasEl || canvasEl).toDataURL('image/' + format, quality)
|
|
: (croppedCanvasEl || canvasEl).toDataURL('image/' + format);
|
|
|
|
this.contextTop && this.clearContext(this.contextTop);
|
|
this.renderAll();
|
|
|
|
if (croppedCanvasEl) {
|
|
croppedCanvasEl = null;
|
|
}
|
|
|
|
return data;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
__getCroppedCanvas: function(canvasEl, cropping) {
|
|
|
|
var croppedCanvasEl,
|
|
croppedCtx,
|
|
shouldCrop = 'left' in cropping ||
|
|
'top' in cropping ||
|
|
'width' in cropping ||
|
|
'height' in cropping;
|
|
|
|
if (shouldCrop) {
|
|
|
|
croppedCanvasEl = fabric.util.createCanvasElement();
|
|
croppedCtx = croppedCanvasEl.getContext('2d');
|
|
|
|
croppedCanvasEl.width = cropping.width || this.width;
|
|
croppedCanvasEl.height = cropping.height || this.height;
|
|
|
|
croppedCtx.drawImage(canvasEl, -cropping.left || 0, -cropping.top || 0);
|
|
}
|
|
|
|
return croppedCanvasEl;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
__toDataURLWithMultiplier: function(format, quality, cropping, multiplier) {
|
|
|
|
var origWidth = this.getWidth(),
|
|
origHeight = this.getHeight(),
|
|
scaledWidth = origWidth * multiplier,
|
|
scaledHeight = origHeight * multiplier,
|
|
activeObject = this.getActiveObject(),
|
|
activeGroup = this.getActiveGroup(),
|
|
|
|
ctx = this.contextTop || this.contextContainer;
|
|
|
|
if (multiplier > 1) {
|
|
this.setWidth(scaledWidth).setHeight(scaledHeight);
|
|
}
|
|
ctx.scale(multiplier, multiplier);
|
|
|
|
if (cropping.left) {
|
|
cropping.left *= multiplier;
|
|
}
|
|
if (cropping.top) {
|
|
cropping.top *= multiplier;
|
|
}
|
|
if (cropping.width) {
|
|
cropping.width *= multiplier;
|
|
}
|
|
else if (multiplier < 1) {
|
|
cropping.width = scaledWidth;
|
|
}
|
|
if (cropping.height) {
|
|
cropping.height *= multiplier;
|
|
}
|
|
else if (multiplier < 1) {
|
|
cropping.height = scaledHeight;
|
|
}
|
|
|
|
if (activeGroup) {
|
|
// not removing group due to complications with restoring it with correct state afterwords
|
|
this._tempRemoveBordersControlsFromGroup(activeGroup);
|
|
}
|
|
else if (activeObject && this.deactivateAll) {
|
|
this.deactivateAll();
|
|
}
|
|
|
|
this.renderAll(true);
|
|
|
|
var data = this.__toDataURL(format, quality, cropping);
|
|
|
|
// restoring width, height for `renderAll` to draw
|
|
// background properly (while context is scaled)
|
|
this.width = origWidth;
|
|
this.height = origHeight;
|
|
|
|
ctx.scale(1 / multiplier, 1 / multiplier);
|
|
this.setWidth(origWidth).setHeight(origHeight);
|
|
|
|
if (activeGroup) {
|
|
this._restoreBordersControlsOnGroup(activeGroup);
|
|
}
|
|
else if (activeObject && this.setActiveObject) {
|
|
this.setActiveObject(activeObject);
|
|
}
|
|
|
|
this.contextTop && this.clearContext(this.contextTop);
|
|
this.renderAll();
|
|
|
|
return data;
|
|
},
|
|
|
|
/**
|
|
* Exports canvas element to a dataurl image (allowing to change image size via multiplier).
|
|
* @deprecated since 1.0.13
|
|
* @param {String} format (png|jpeg)
|
|
* @param {Number} multiplier
|
|
* @param {Number} quality (0..1)
|
|
* @return {String}
|
|
*/
|
|
toDataURLWithMultiplier: function (format, multiplier, quality) {
|
|
return this.toDataURL({
|
|
format: format,
|
|
multiplier: multiplier,
|
|
quality: quality
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_tempRemoveBordersControlsFromGroup: function(group) {
|
|
group.origHasControls = group.hasControls;
|
|
group.origBorderColor = group.borderColor;
|
|
|
|
group.hasControls = true;
|
|
group.borderColor = 'rgba(0,0,0,0)';
|
|
|
|
group.forEachObject(function(o) {
|
|
o.origBorderColor = o.borderColor;
|
|
o.borderColor = 'rgba(0,0,0,0)';
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_restoreBordersControlsOnGroup: function(group) {
|
|
group.hideControls = group.origHideControls;
|
|
group.borderColor = group.origBorderColor;
|
|
|
|
group.forEachObject(function(o) {
|
|
o.borderColor = o.origBorderColor;
|
|
delete o.origBorderColor;
|
|
});
|
|
}
|
|
});
|
|
|
|
|
|
fabric.util.object.extend(fabric.StaticCanvas.prototype, /** @lends fabric.StaticCanvas.prototype */ {
|
|
|
|
/**
|
|
* Populates canvas with data from the specified dataless JSON.
|
|
* JSON format must conform to the one of {@link fabric.Canvas#toDatalessJSON}
|
|
* @deprecated since 1.2.2
|
|
* @param {String|Object} json JSON string or object
|
|
* @param {Function} callback Callback, invoked when json is parsed
|
|
* and corresponding objects (e.g: {@link fabric.Image})
|
|
* are initialized
|
|
* @param {Function} [reviver] Method for further parsing of JSON elements, called after each fabric object created.
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-3/#deserialization}
|
|
*/
|
|
loadFromDatalessJSON: function (json, callback, reviver) {
|
|
return this.loadFromJSON(json, callback, reviver);
|
|
},
|
|
|
|
/**
|
|
* Populates canvas with data from the specified JSON.
|
|
* JSON format must conform to the one of {@link fabric.Canvas#toJSON}
|
|
* @param {String|Object} json JSON string or object
|
|
* @param {Function} callback Callback, invoked when json is parsed
|
|
* and corresponding objects (e.g: {@link fabric.Image})
|
|
* are initialized
|
|
* @param {Function} [reviver] Method for further parsing of JSON elements, called after each fabric object created.
|
|
* @return {fabric.Canvas} instance
|
|
* @chainable
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-3/#deserialization}
|
|
* @see {@link http://jsfiddle.net/fabricjs/fmgXt/|jsFiddle demo}
|
|
* @example <caption>loadFromJSON</caption>
|
|
* canvas.loadFromJSON(json, canvas.renderAll.bind(canvas));
|
|
* @example <caption>loadFromJSON with reviver</caption>
|
|
* canvas.loadFromJSON(json, canvas.renderAll.bind(canvas), function(o, object) {
|
|
* // `o` = json object
|
|
* // `object` = fabric.Object instance
|
|
* // ... do some stuff ...
|
|
* });
|
|
*/
|
|
loadFromJSON: function (json, callback, reviver) {
|
|
if (!json) {
|
|
return;
|
|
}
|
|
|
|
// serialize if it wasn't already
|
|
var serialized = (typeof json === 'string')
|
|
? JSON.parse(json)
|
|
: json;
|
|
|
|
this.clear();
|
|
|
|
var _this = this;
|
|
this._enlivenObjects(serialized.objects, function () {
|
|
_this._setBgOverlay(serialized, callback);
|
|
}, reviver);
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} serialized Object with background and overlay information
|
|
* @param {Function} callback Invoked after all background and overlay images/patterns loaded
|
|
*/
|
|
_setBgOverlay: function(serialized, callback) {
|
|
var _this = this,
|
|
loaded = {
|
|
backgroundColor: false,
|
|
overlayColor: false,
|
|
backgroundImage: false,
|
|
overlayImage: false
|
|
};
|
|
|
|
if (!serialized.backgroundImage && !serialized.overlayImage && !serialized.background && !serialized.overlay) {
|
|
callback && callback();
|
|
return;
|
|
}
|
|
|
|
var cbIfLoaded = function () {
|
|
if (loaded.backgroundImage && loaded.overlayImage && loaded.backgroundColor && loaded.overlayColor) {
|
|
_this.renderAll();
|
|
callback && callback();
|
|
}
|
|
};
|
|
|
|
this.__setBgOverlay('backgroundImage', serialized.backgroundImage, loaded, cbIfLoaded);
|
|
this.__setBgOverlay('overlayImage', serialized.overlayImage, loaded, cbIfLoaded);
|
|
this.__setBgOverlay('backgroundColor', serialized.background, loaded, cbIfLoaded);
|
|
this.__setBgOverlay('overlayColor', serialized.overlay, loaded, cbIfLoaded);
|
|
|
|
cbIfLoaded();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} property Property to set (backgroundImage, overlayImage, backgroundColor, overlayColor)
|
|
* @param {(Object|String)} value Value to set
|
|
* @param {Object} loaded Set loaded property to true if property is set
|
|
* @param {Object} callback Callback function to invoke after property is set
|
|
*/
|
|
__setBgOverlay: function(property, value, loaded, callback) {
|
|
var _this = this;
|
|
|
|
if (!value) {
|
|
loaded[property] = true;
|
|
return;
|
|
}
|
|
|
|
if (property === 'backgroundImage' || property === 'overlayImage') {
|
|
fabric.Image.fromObject(value, function(img) {
|
|
_this[property] = img;
|
|
loaded[property] = true;
|
|
callback && callback();
|
|
});
|
|
}
|
|
else {
|
|
this['set' + fabric.util.string.capitalize(property, true)](value, function() {
|
|
loaded[property] = true;
|
|
callback && callback();
|
|
});
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Array} objects
|
|
* @param {Function} callback
|
|
* @param {Function} [reviver]
|
|
*/
|
|
_enlivenObjects: function (objects, callback, reviver) {
|
|
var _this = this;
|
|
|
|
if (!objects || objects.length === 0) {
|
|
callback && callback();
|
|
return;
|
|
}
|
|
|
|
var renderOnAddRemove = this.renderOnAddRemove;
|
|
this.renderOnAddRemove = false;
|
|
|
|
fabric.util.enlivenObjects(objects, function(enlivenedObjects) {
|
|
enlivenedObjects.forEach(function(obj, index) {
|
|
_this.insertAt(obj, index, true);
|
|
});
|
|
|
|
_this.renderOnAddRemove = renderOnAddRemove;
|
|
callback && callback();
|
|
}, null, reviver);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} format
|
|
* @param {Function} callback
|
|
*/
|
|
_toDataURL: function (format, callback) {
|
|
this.clone(function (clone) {
|
|
callback(clone.toDataURL(format));
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} format
|
|
* @param {Number} multiplier
|
|
* @param {Function} callback
|
|
*/
|
|
_toDataURLWithMultiplier: function (format, multiplier, callback) {
|
|
this.clone(function (clone) {
|
|
callback(clone.toDataURLWithMultiplier(format, multiplier));
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Clones canvas instance
|
|
* @param {Object} [callback] Receives cloned instance as a first argument
|
|
* @param {Array} [properties] Array of properties to include in the cloned canvas and children
|
|
*/
|
|
clone: function (callback, properties) {
|
|
var data = JSON.stringify(this.toJSON(properties));
|
|
this.cloneWithoutData(function(clone) {
|
|
clone.loadFromJSON(data, function() {
|
|
callback && callback(clone);
|
|
});
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Clones canvas instance without cloning existing data.
|
|
* This essentially copies canvas dimensions, clipping properties, etc.
|
|
* but leaves data empty (so that you can populate it with your own)
|
|
* @param {Object} [callback] Receives cloned instance as a first argument
|
|
*/
|
|
cloneWithoutData: function(callback) {
|
|
var el = fabric.document.createElement('canvas');
|
|
|
|
el.width = this.getWidth();
|
|
el.height = this.getHeight();
|
|
|
|
var clone = new fabric.Canvas(el);
|
|
clone.clipTo = this.clipTo;
|
|
if (this.backgroundImage) {
|
|
clone.setBackgroundImage(this.backgroundImage.src, function() {
|
|
clone.renderAll();
|
|
callback && callback(clone);
|
|
});
|
|
clone.backgroundImageOpacity = this.backgroundImageOpacity;
|
|
clone.backgroundImageStretch = this.backgroundImageStretch;
|
|
}
|
|
else {
|
|
callback && callback(clone);
|
|
}
|
|
}
|
|
});
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend,
|
|
toFixed = fabric.util.toFixed,
|
|
capitalize = fabric.util.string.capitalize,
|
|
degreesToRadians = fabric.util.degreesToRadians,
|
|
supportsLineDash = fabric.StaticCanvas.supports('setLineDash');
|
|
|
|
if (fabric.Object) {
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Root object class from which all 2d shape classes inherit from
|
|
* @class fabric.Object
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-1/#objects}
|
|
* @see {@link fabric.Object#initialize} for constructor definition
|
|
*
|
|
* @fires added
|
|
* @fires removed
|
|
*
|
|
* @fires selected
|
|
* @fires modified
|
|
* @fires rotating
|
|
* @fires scaling
|
|
* @fires moving
|
|
*
|
|
* @fires mousedown
|
|
* @fires mouseup
|
|
*/
|
|
fabric.Object = fabric.util.createClass(/** @lends fabric.Object.prototype */ {
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#clipTo|clipping function}
|
|
* @method getClipTo
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Function}
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#clipTo|clipping function}
|
|
* @method setClipTo
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Function} clipTo Clipping function
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#transformMatrix|transformMatrix}
|
|
* @method getTransformMatrix
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Array} transformMatrix
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#transformMatrix|transformMatrix}
|
|
* @method setTransformMatrix
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Array} transformMatrix
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#visible|visible} state
|
|
* @method getVisible
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Boolean} True if visible
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#visible|visible} state
|
|
* @method setVisible
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Boolean} value visible value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#shadow|shadow}
|
|
* @method getShadow
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Object} Shadow instance
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#stroke|stroke}
|
|
* @method getStroke
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {String} stroke value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#stroke|stroke}
|
|
* @method setStroke
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {String} value stroke value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#strokeWidth|strokeWidth}
|
|
* @method getStrokeWidth
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Number} strokeWidth value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#strokeWidth|strokeWidth}
|
|
* @method setStrokeWidth
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Number} value strokeWidth value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#originX|originX}
|
|
* @method getOriginX
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {String} originX value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#originX|originX}
|
|
* @method setOriginX
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {String} value originX value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#originY|originY}
|
|
* @method getOriginY
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {String} originY value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#originY|originY}
|
|
* @method setOriginY
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {String} value originY value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#fill|fill}
|
|
* @method getFill
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {String} Fill value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#fill|fill}
|
|
* @method setFill
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {String} value Fill value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#opacity|opacity}
|
|
* @method getOpacity
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Number} Opacity value (0-1)
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#opacity|opacity}
|
|
* @method setOpacity
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Number} value Opacity value (0-1)
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#angle|angle} (in degrees)
|
|
* @method getAngle
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Number}
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#angle|angle}
|
|
* @method setAngle
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Number} value Angle value (in degrees)
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#top|top position}
|
|
* @method getTop
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Number} Top value (in pixels)
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#top|top position}
|
|
* @method setTop
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Number} value Top value (in pixels)
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#left|left position}
|
|
* @method getLeft
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Number} Left value (in pixels)
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#left|left position}
|
|
* @method setLeft
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Number} value Left value (in pixels)
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#scaleX|scaleX} value
|
|
* @method getScaleX
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Number} scaleX value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#scaleX|scaleX} value
|
|
* @method setScaleX
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Number} value scaleX value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#scaleY|scaleY} value
|
|
* @method getScaleY
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Number} scaleY value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#scaleY|scaleY} value
|
|
* @method setScaleY
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Number} value scaleY value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#flipX|flipX} value
|
|
* @method getFlipX
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Boolean} flipX value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#flipX|flipX} value
|
|
* @method setFlipX
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Boolean} value flipX value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's {@link fabric.Object#flipY|flipY} value
|
|
* @method getFlipY
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Boolean} flipY value
|
|
*/
|
|
|
|
/**
|
|
* Sets object's {@link fabric.Object#flipY|flipY} value
|
|
* @method setFlipY
|
|
* @memberOf fabric.Object.prototype
|
|
* @param {Boolean} value flipY value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Type of an object (rect, circle, path, etc.)
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'object',
|
|
|
|
/**
|
|
* Horizontal origin of transformation of an object (one of "left", "right", "center")
|
|
* @type String
|
|
* @default
|
|
*/
|
|
originX: 'left',
|
|
|
|
/**
|
|
* Vertical origin of transformation of an object (one of "top", "bottom", "center")
|
|
* @type String
|
|
* @default
|
|
*/
|
|
originY: 'top',
|
|
|
|
/**
|
|
* Top position of an object. Note that by default it's relative to object center. You can change this by setting originY={top/center/bottom}
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
top: 0,
|
|
|
|
/**
|
|
* Left position of an object. Note that by default it's relative to object center. You can change this by setting originX={left/center/right}
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
left: 0,
|
|
|
|
/**
|
|
* Object width
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
width: 0,
|
|
|
|
/**
|
|
* Object height
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
height: 0,
|
|
|
|
/**
|
|
* Object scale factor (horizontal)
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
scaleX: 1,
|
|
|
|
/**
|
|
* Object scale factor (vertical)
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
scaleY: 1,
|
|
|
|
/**
|
|
* When true, an object is rendered as flipped horizontally
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
flipX: false,
|
|
|
|
/**
|
|
* When true, an object is rendered as flipped vertically
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
flipY: false,
|
|
|
|
/**
|
|
* Opacity of an object
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
opacity: 1,
|
|
|
|
/**
|
|
* Angle of rotation of an object (in degrees)
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
angle: 0,
|
|
|
|
/**
|
|
* Size of object's controlling corners (in pixels)
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
cornerSize: 12,
|
|
|
|
/**
|
|
* When true, object's controlling corners are rendered as transparent inside (i.e. stroke instead of fill)
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
transparentCorners: true,
|
|
|
|
/**
|
|
* Default cursor value used when hovering over this object on canvas
|
|
* @type String
|
|
* @default
|
|
*/
|
|
hoverCursor: null,
|
|
|
|
/**
|
|
* Padding between object and its controlling borders (in pixels)
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
padding: 0,
|
|
|
|
/**
|
|
* Color of controlling borders of an object (when it's active)
|
|
* @type String
|
|
* @default
|
|
*/
|
|
borderColor: 'rgba(102,153,255,0.75)',
|
|
|
|
/**
|
|
* Color of controlling corners of an object (when it's active)
|
|
* @type String
|
|
* @default
|
|
*/
|
|
cornerColor: 'rgba(102,153,255,0.5)',
|
|
|
|
/**
|
|
* When true, this object will use center point as the origin of transformation
|
|
* when being scaled via the controls.
|
|
* <b>Backwards incompatibility note:</b> This property replaces "centerTransform" (Boolean).
|
|
* @since 1.3.4
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
centeredScaling: false,
|
|
|
|
/**
|
|
* When true, this object will use center point as the origin of transformation
|
|
* when being rotated via the controls.
|
|
* <b>Backwards incompatibility note:</b> This property replaces "centerTransform" (Boolean).
|
|
* @since 1.3.4
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
centeredRotation: true,
|
|
|
|
/**
|
|
* Color of object's fill
|
|
* @type String
|
|
* @default
|
|
*/
|
|
fill: 'rgb(0,0,0)',
|
|
|
|
/**
|
|
* Fill rule used to fill an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
fillRule: 'source-over',
|
|
|
|
/**
|
|
* Background color of an object. Only works with text objects at the moment.
|
|
* @type String
|
|
* @default
|
|
*/
|
|
backgroundColor: '',
|
|
|
|
/**
|
|
* When defined, an object is rendered via stroke and this property specifies its color
|
|
* @type String
|
|
* @default
|
|
*/
|
|
stroke: null,
|
|
|
|
/**
|
|
* Width of a stroke used to render this object
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
strokeWidth: 1,
|
|
|
|
/**
|
|
* Array specifying dash pattern of an object's stroke (stroke must be defined)
|
|
* @type Array
|
|
*/
|
|
strokeDashArray: null,
|
|
|
|
/**
|
|
* Line endings style of an object's stroke (one of "butt", "round", "square")
|
|
* @type String
|
|
* @default
|
|
*/
|
|
strokeLineCap: 'butt',
|
|
|
|
/**
|
|
* Corner style of an object's stroke (one of "bevil", "round", "miter")
|
|
* @type String
|
|
* @default
|
|
*/
|
|
strokeLineJoin: 'miter',
|
|
|
|
/**
|
|
* Maximum miter length (used for strokeLineJoin = "miter") of an object's stroke
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
strokeMiterLimit: 10,
|
|
|
|
/**
|
|
* Shadow object representing shadow of this shape
|
|
* @type fabric.Shadow
|
|
* @default
|
|
*/
|
|
shadow: null,
|
|
|
|
/**
|
|
* Opacity of object's controlling borders when object is active and moving
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
borderOpacityWhenMoving: 0.4,
|
|
|
|
/**
|
|
* Scale factor of object's controlling borders
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
borderScaleFactor: 1,
|
|
|
|
/**
|
|
* Transform matrix (similar to SVG's transform matrix)
|
|
* @type Array
|
|
*/
|
|
transformMatrix: null,
|
|
|
|
/**
|
|
* Minimum allowed scale value of an object
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
minScaleLimit: 0.01,
|
|
|
|
/**
|
|
* When set to `false`, an object can not be selected for modification (using either point-click-based or group-based selection).
|
|
* But events still fire on it.
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
selectable: true,
|
|
|
|
/**
|
|
* When set to `false`, an object can not be a target of events. All events propagate through it. Introduced in v1.3.4
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
evented: true,
|
|
|
|
/**
|
|
* When set to `false`, an object is not rendered on canvas
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
visible: true,
|
|
|
|
/**
|
|
* When set to `false`, object's controls are not displayed and can not be used to manipulate object
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
hasControls: true,
|
|
|
|
/**
|
|
* When set to `false`, object's controlling borders are not rendered
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
hasBorders: true,
|
|
|
|
/**
|
|
* When set to `false`, object's controlling rotating point will not be visible or selectable
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
hasRotatingPoint: true,
|
|
|
|
/**
|
|
* Offset for object's controlling rotating point (when enabled via `hasRotatingPoint`)
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
rotatingPointOffset: 40,
|
|
|
|
/**
|
|
* When set to `true`, objects are "found" on canvas on per-pixel basis rather than according to bounding box
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
perPixelTargetFind: false,
|
|
|
|
/**
|
|
* When `false`, default object's values are not included in its serialization
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
includeDefaultValues: true,
|
|
|
|
/**
|
|
* Function that determines clipping of an object (context is passed as a first argument)
|
|
* Note that context origin is at the object's center point (not left/top corner)
|
|
* @type Function
|
|
*/
|
|
clipTo: null,
|
|
|
|
/**
|
|
* When `true`, object horizontal movement is locked
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
lockMovementX: false,
|
|
|
|
/**
|
|
* When `true`, object vertical movement is locked
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
lockMovementY: false,
|
|
|
|
/**
|
|
* When `true`, object rotation is locked
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
lockRotation: false,
|
|
|
|
/**
|
|
* When `true`, object horizontal scaling is locked
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
lockScalingX: false,
|
|
|
|
/**
|
|
* When `true`, object vertical scaling is locked
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
lockScalingY: false,
|
|
|
|
/**
|
|
* When `true`, object non-uniform scaling is locked
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
lockUniScaling: false,
|
|
|
|
/**
|
|
* When `true`, object cannot be flipped by scaling into negative values
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
|
|
lockScalingFlip: false,
|
|
/**
|
|
* List of properties to consider when checking if state
|
|
* of an object is changed (fabric.Object#hasStateChanged)
|
|
* as well as for history (undo/redo) purposes
|
|
* @type Array
|
|
*/
|
|
stateProperties: (
|
|
'top left width height scaleX scaleY flipX flipY originX originY transformMatrix ' +
|
|
'stroke strokeWidth strokeDashArray strokeLineCap strokeLineJoin strokeMiterLimit ' +
|
|
'angle opacity fill fillRule shadow clipTo visible backgroundColor'
|
|
).split(' '),
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
initialize: function(options) {
|
|
if (options) {
|
|
this.setOptions(options);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
_initGradient: function(options) {
|
|
if (options.fill && options.fill.colorStops && !(options.fill instanceof fabric.Gradient)) {
|
|
this.set('fill', new fabric.Gradient(options.fill));
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
_initPattern: function(options) {
|
|
if (options.fill && options.fill.source && !(options.fill instanceof fabric.Pattern)) {
|
|
this.set('fill', new fabric.Pattern(options.fill));
|
|
}
|
|
if (options.stroke && options.stroke.source && !(options.stroke instanceof fabric.Pattern)) {
|
|
this.set('stroke', new fabric.Pattern(options.stroke));
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
_initClipping: function(options) {
|
|
if (!options.clipTo || typeof options.clipTo !== 'string') {
|
|
return;
|
|
}
|
|
|
|
var functionBody = fabric.util.getFunctionBody(options.clipTo);
|
|
if (typeof functionBody !== 'undefined') {
|
|
this.clipTo = new Function('ctx', functionBody);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Sets object's properties from options
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
setOptions: function(options) {
|
|
for (var prop in options) {
|
|
this.set(prop, options[prop]);
|
|
}
|
|
this._initGradient(options);
|
|
this._initPattern(options);
|
|
this._initClipping(options);
|
|
},
|
|
|
|
/**
|
|
* Transforms context when rendering an object
|
|
* @param {CanvasRenderingContext2D} ctx Context
|
|
* @param {Boolean} fromLeft When true, context is transformed to object's top/left corner. This is used when rendering text on Node
|
|
*/
|
|
transform: function(ctx, fromLeft) {
|
|
if (this.group) {
|
|
this.group.transform(ctx, fromLeft);
|
|
}
|
|
ctx.globalAlpha = this.opacity;
|
|
|
|
var center = fromLeft ? this._getLeftTopCoords() : this.getCenterPoint();
|
|
ctx.translate(center.x, center.y);
|
|
ctx.rotate(degreesToRadians(this.angle));
|
|
ctx.scale(
|
|
this.scaleX * (this.flipX ? -1 : 1),
|
|
this.scaleY * (this.flipY ? -1 : 1)
|
|
);
|
|
},
|
|
|
|
/**
|
|
* Returns an object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
var NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS,
|
|
|
|
object = {
|
|
type: this.type,
|
|
originX: this.originX,
|
|
originY: this.originY,
|
|
left: toFixed(this.left, NUM_FRACTION_DIGITS),
|
|
top: toFixed(this.top, NUM_FRACTION_DIGITS),
|
|
width: toFixed(this.width, NUM_FRACTION_DIGITS),
|
|
height: toFixed(this.height, NUM_FRACTION_DIGITS),
|
|
fill: (this.fill && this.fill.toObject) ? this.fill.toObject() : this.fill,
|
|
stroke: (this.stroke && this.stroke.toObject) ? this.stroke.toObject() : this.stroke,
|
|
strokeWidth: toFixed(this.strokeWidth, NUM_FRACTION_DIGITS),
|
|
strokeDashArray: this.strokeDashArray,
|
|
strokeLineCap: this.strokeLineCap,
|
|
strokeLineJoin: this.strokeLineJoin,
|
|
strokeMiterLimit: toFixed(this.strokeMiterLimit, NUM_FRACTION_DIGITS),
|
|
scaleX: toFixed(this.scaleX, NUM_FRACTION_DIGITS),
|
|
scaleY: toFixed(this.scaleY, NUM_FRACTION_DIGITS),
|
|
angle: toFixed(this.getAngle(), NUM_FRACTION_DIGITS),
|
|
flipX: this.flipX,
|
|
flipY: this.flipY,
|
|
opacity: toFixed(this.opacity, NUM_FRACTION_DIGITS),
|
|
shadow: (this.shadow && this.shadow.toObject) ? this.shadow.toObject() : this.shadow,
|
|
visible: this.visible,
|
|
clipTo: this.clipTo && String(this.clipTo),
|
|
backgroundColor: this.backgroundColor
|
|
};
|
|
|
|
if (!this.includeDefaultValues) {
|
|
object = this._removeDefaultValues(object);
|
|
}
|
|
|
|
fabric.util.populateWithProperties(this, object, propertiesToInclude);
|
|
|
|
return object;
|
|
},
|
|
|
|
/**
|
|
* Returns (dataless) object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toDatalessObject: function(propertiesToInclude) {
|
|
// will be overwritten by subclasses
|
|
return this.toObject(propertiesToInclude);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} object
|
|
*/
|
|
_removeDefaultValues: function(object) {
|
|
var prototype = fabric.util.getKlass(object.type).prototype,
|
|
stateProperties = prototype.stateProperties;
|
|
|
|
stateProperties.forEach(function(prop) {
|
|
if (object[prop] === prototype[prop]) {
|
|
delete object[prop];
|
|
}
|
|
});
|
|
|
|
return object;
|
|
},
|
|
|
|
/**
|
|
* Returns a string representation of an instance
|
|
* @return {String}
|
|
*/
|
|
toString: function() {
|
|
return '#<fabric.' + capitalize(this.type) + '>';
|
|
},
|
|
|
|
/**
|
|
* Basic getter
|
|
* @param {String} property Property name
|
|
* @return {Any} value of a property
|
|
*/
|
|
get: function(property) {
|
|
return this[property];
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setObject: function(obj) {
|
|
for (var prop in obj) {
|
|
this._set(prop, obj[prop]);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Sets property to a given value. When changing position/dimension -related properties (left, top, scale, angle, etc.) `set` does not update position of object's borders/controls. If you need to update those, call `setCoords()`.
|
|
* @param {String|Object} key Property name or object (if object, iterate over the object properties)
|
|
* @param {Object|Function} value Property value (if function, the value is passed into it and its return value is used as a new one)
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
set: function(key, value) {
|
|
if (typeof key === 'object') {
|
|
this._setObject(key);
|
|
}
|
|
else {
|
|
if (typeof value === 'function' && key !== 'clipTo') {
|
|
this._set(key, value(this.get(key)));
|
|
}
|
|
else {
|
|
this._set(key, value);
|
|
}
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} key
|
|
* @param {Any} value
|
|
* @return {fabric.Object} thisArg
|
|
*/
|
|
_set: function(key, value) {
|
|
var shouldConstrainValue = (key === 'scaleX' || key === 'scaleY');
|
|
|
|
if (shouldConstrainValue) {
|
|
value = this._constrainScale(value);
|
|
}
|
|
if (key === 'scaleX' && value < 0) {
|
|
this.flipX = !this.flipX;
|
|
value *= -1;
|
|
}
|
|
else if (key === 'scaleY' && value < 0) {
|
|
this.flipY = !this.flipY;
|
|
value *= -1;
|
|
}
|
|
else if (key === 'width' || key === 'height') {
|
|
this.minScaleLimit = toFixed(Math.min(0.1, 1/Math.max(this.width, this.height)), 2);
|
|
}
|
|
else if (key === 'shadow' && value && !(value instanceof fabric.Shadow)) {
|
|
value = new fabric.Shadow(value);
|
|
}
|
|
|
|
this[key] = value;
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Toggles specified property from `true` to `false` or from `false` to `true`
|
|
* @param {String} property Property to toggle
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
toggle: function(property) {
|
|
var value = this.get(property);
|
|
if (typeof value === 'boolean') {
|
|
this.set(property, !value);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets sourcePath of an object
|
|
* @param {String} value Value to set sourcePath to
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
setSourcePath: function(value) {
|
|
this.sourcePath = value;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Retrieves viewportTransform from Object's canvas if possible
|
|
* @method getViewportTransform
|
|
* @memberOf fabric.Object.prototype
|
|
* @return {Boolean} flipY value // TODO
|
|
*/
|
|
getViewportTransform: function() {
|
|
if (this.canvas && this.canvas.viewportTransform) {
|
|
return this.canvas.viewportTransform;
|
|
}
|
|
return [1, 0, 0, 1, 0, 0];
|
|
},
|
|
|
|
/**
|
|
* Renders an object on a specified context
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Boolean} [noTransform] When true, context is not transformed
|
|
*/
|
|
render: function(ctx, noTransform) {
|
|
// do not render if width/height are zeros or object is not visible
|
|
if (this.width === 0 || this.height === 0 || !this.visible) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
|
|
//setup fill rule for current object
|
|
this._setupFillRule(ctx);
|
|
|
|
this._transform(ctx, noTransform);
|
|
this._setStrokeStyles(ctx);
|
|
this._setFillStyles(ctx);
|
|
|
|
if (this.group && this.group.type === 'path-group') {
|
|
ctx.translate(-this.group.width/2, -this.group.height/2);
|
|
var m = this.transformMatrix;
|
|
if (m) {
|
|
ctx.transform.apply(ctx, m);
|
|
}
|
|
}
|
|
ctx.globalAlpha = this.group ? (ctx.globalAlpha * this.opacity) : this.opacity;
|
|
this._setShadow(ctx);
|
|
this.clipTo && fabric.util.clipContext(this, ctx);
|
|
this._render(ctx, noTransform);
|
|
this.clipTo && ctx.restore();
|
|
this._removeShadow(ctx);
|
|
this._restoreFillRule(ctx);
|
|
|
|
ctx.restore();
|
|
},
|
|
|
|
_transform: function(ctx, noTransform) {
|
|
var m = this.transformMatrix;
|
|
|
|
if (m && !this.group) {
|
|
ctx.setTransform.apply(ctx, m);
|
|
}
|
|
if (!noTransform) {
|
|
this.transform(ctx);
|
|
}
|
|
},
|
|
|
|
_setStrokeStyles: function(ctx) {
|
|
if (this.stroke) {
|
|
ctx.lineWidth = this.strokeWidth;
|
|
ctx.lineCap = this.strokeLineCap;
|
|
ctx.lineJoin = this.strokeLineJoin;
|
|
ctx.miterLimit = this.strokeMiterLimit;
|
|
ctx.strokeStyle = this.stroke.toLive
|
|
? this.stroke.toLive(ctx)
|
|
: this.stroke;
|
|
}
|
|
},
|
|
|
|
_setFillStyles: function(ctx) {
|
|
if (this.fill) {
|
|
ctx.fillStyle = this.fill.toLive
|
|
? this.fill.toLive(ctx)
|
|
: this.fill;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Renders controls and borders for the object
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Boolean} [noTransform] When true, context is not transformed
|
|
*/
|
|
_renderControls: function(ctx, noTransform) {
|
|
var vpt = this.getViewportTransform();
|
|
|
|
ctx.save();
|
|
if (this.active && !noTransform) {
|
|
var center;
|
|
if (this.group) {
|
|
center = fabric.util.transformPoint(this.group.getCenterPoint(), vpt);
|
|
ctx.translate(center.x, center.y);
|
|
ctx.rotate(degreesToRadians(this.group.angle));
|
|
}
|
|
center = fabric.util.transformPoint(this.getCenterPoint(), vpt, null != this.group);
|
|
if (this.group) {
|
|
center.x *= this.group.scaleX;
|
|
center.y *= this.group.scaleY;
|
|
}
|
|
ctx.translate(center.x, center.y);
|
|
ctx.rotate(degreesToRadians(this.angle));
|
|
this.drawBorders(ctx);
|
|
this.drawControls(ctx);
|
|
}
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_setShadow: function(ctx) {
|
|
if (!this.shadow) {
|
|
return;
|
|
}
|
|
|
|
ctx.shadowColor = this.shadow.color;
|
|
ctx.shadowBlur = this.shadow.blur;
|
|
ctx.shadowOffsetX = this.shadow.offsetX;
|
|
ctx.shadowOffsetY = this.shadow.offsetY;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_removeShadow: function(ctx) {
|
|
if (!this.shadow) {
|
|
return;
|
|
}
|
|
|
|
ctx.shadowColor = '';
|
|
ctx.shadowBlur = ctx.shadowOffsetX = ctx.shadowOffsetY = 0;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderFill: function(ctx) {
|
|
if (!this.fill) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
if (this.fill.toLive) {
|
|
ctx.translate(
|
|
-this.width / 2 + this.fill.offsetX || 0,
|
|
-this.height / 2 + this.fill.offsetY || 0);
|
|
}
|
|
if (this.fill.gradientTransform) {
|
|
var g = this.fill.gradientTransform;
|
|
ctx.transform.apply(ctx, g);
|
|
}
|
|
if (this.fillRule === 'destination-over') {
|
|
ctx.fill('evenodd');
|
|
}
|
|
else {
|
|
ctx.fill();
|
|
}
|
|
ctx.restore();
|
|
if (this.shadow && !this.shadow.affectStroke) {
|
|
this._removeShadow(ctx);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderStroke: function(ctx) {
|
|
if (!this.stroke || this.strokeWidth === 0) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
if (this.strokeDashArray) {
|
|
// Spec requires the concatenation of two copies the dash list when the number of elements is odd
|
|
if (1 & this.strokeDashArray.length) {
|
|
this.strokeDashArray.push.apply(this.strokeDashArray, this.strokeDashArray);
|
|
}
|
|
|
|
if (supportsLineDash) {
|
|
ctx.setLineDash(this.strokeDashArray);
|
|
this._stroke && this._stroke(ctx);
|
|
}
|
|
else {
|
|
this._renderDashedStroke && this._renderDashedStroke(ctx);
|
|
}
|
|
ctx.stroke();
|
|
}
|
|
else {
|
|
if (this.stroke.gradientTransform) {
|
|
var g = this.stroke.gradientTransform;
|
|
ctx.transform.apply(ctx, g);
|
|
}
|
|
this._stroke ? this._stroke(ctx) : ctx.stroke();
|
|
}
|
|
this._removeShadow(ctx);
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Clones an instance
|
|
* @param {Function} callback Callback is invoked with a clone as a first argument
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {fabric.Object} clone of an instance
|
|
*/
|
|
clone: function(callback, propertiesToInclude) {
|
|
if (this.constructor.fromObject) {
|
|
return this.constructor.fromObject(this.toObject(propertiesToInclude), callback);
|
|
}
|
|
return new fabric.Object(this.toObject(propertiesToInclude));
|
|
},
|
|
|
|
/**
|
|
* Creates an instance of fabric.Image out of an object
|
|
* @param {Function} callback callback, invoked with an instance as a first argument
|
|
* @return {fabric.Object} thisArg
|
|
*/
|
|
cloneAsImage: function(callback) {
|
|
var dataUrl = this.toDataURL();
|
|
fabric.util.loadImage(dataUrl, function(img) {
|
|
if (callback) {
|
|
callback(new fabric.Image(img));
|
|
}
|
|
});
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Converts an object into a data-url-like string
|
|
* @param {Object} options Options object
|
|
* @param {String} [options.format=png] The format of the output image. Either "jpeg" or "png"
|
|
* @param {Number} [options.quality=1] Quality level (0..1). Only used for jpeg.
|
|
* @param {Number} [options.multiplier=1] Multiplier to scale by
|
|
* @param {Number} [options.left] Cropping left offset. Introduced in v1.2.14
|
|
* @param {Number} [options.top] Cropping top offset. Introduced in v1.2.14
|
|
* @param {Number} [options.width] Cropping width. Introduced in v1.2.14
|
|
* @param {Number} [options.height] Cropping height. Introduced in v1.2.14
|
|
* @return {String} Returns a data: URL containing a representation of the object in the format specified by options.format
|
|
*/
|
|
toDataURL: function(options) {
|
|
options || (options = { });
|
|
|
|
var el = fabric.util.createCanvasElement(),
|
|
boundingRect = this.getBoundingRect();
|
|
|
|
el.width = boundingRect.width;
|
|
el.height = boundingRect.height;
|
|
|
|
fabric.util.wrapElement(el, 'div');
|
|
var canvas = new fabric.Canvas(el);
|
|
|
|
// to avoid common confusion https://github.com/kangax/fabric.js/issues/806
|
|
if (options.format === 'jpg') {
|
|
options.format = 'jpeg';
|
|
}
|
|
|
|
if (options.format === 'jpeg') {
|
|
canvas.backgroundColor = '#fff';
|
|
}
|
|
|
|
var origParams = {
|
|
active: this.get('active'),
|
|
left: this.getLeft(),
|
|
top: this.getTop()
|
|
};
|
|
|
|
this.set('active', false);
|
|
this.setPositionByOrigin(new fabric.Point(el.width / 2, el.height / 2), 'center', 'center');
|
|
|
|
var originalCanvas = this.canvas;
|
|
canvas.add(this);
|
|
var data = canvas.toDataURL(options);
|
|
|
|
this.set(origParams).setCoords();
|
|
this.canvas = originalCanvas;
|
|
|
|
canvas.dispose();
|
|
canvas = null;
|
|
|
|
return data;
|
|
},
|
|
|
|
/**
|
|
* Returns true if specified type is identical to the type of an instance
|
|
* @param {String} type Type to check against
|
|
* @return {Boolean}
|
|
*/
|
|
isType: function(type) {
|
|
return this.type === type;
|
|
},
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity of this instance
|
|
*/
|
|
complexity: function() {
|
|
return 0;
|
|
},
|
|
|
|
/**
|
|
* Returns a JSON representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} JSON
|
|
*/
|
|
toJSON: function(propertiesToInclude) {
|
|
// delegate, not alias
|
|
return this.toObject(propertiesToInclude);
|
|
},
|
|
|
|
/**
|
|
* Sets gradient (fill or stroke) of an object
|
|
* <b>Backwards incompatibility note:</b> This method was named "setGradientFill" until v1.1.0
|
|
* @param {String} property Property name 'stroke' or 'fill'
|
|
* @param {Object} [options] Options object
|
|
* @param {String} [options.type] Type of gradient 'radial' or 'linear'
|
|
* @param {Number} [options.x1=0] x-coordinate of start point
|
|
* @param {Number} [options.y1=0] y-coordinate of start point
|
|
* @param {Number} [options.x2=0] x-coordinate of end point
|
|
* @param {Number} [options.y2=0] y-coordinate of end point
|
|
* @param {Number} [options.r1=0] Radius of start point (only for radial gradients)
|
|
* @param {Number} [options.r2=0] Radius of end point (only for radial gradients)
|
|
* @param {Object} [options.colorStops] Color stops object eg. {0: 'ff0000', 1: '000000'}
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
* @see {@link http://jsfiddle.net/fabricjs/58y8b/|jsFiddle demo}
|
|
* @example <caption>Set linear gradient</caption>
|
|
* object.setGradient('fill', {
|
|
* type: 'linear',
|
|
* x1: -object.width / 2,
|
|
* y1: 0,
|
|
* x2: object.width / 2,
|
|
* y2: 0,
|
|
* colorStops: {
|
|
* 0: 'red',
|
|
* 0.5: '#005555',
|
|
* 1: 'rgba(0,0,255,0.5)'
|
|
* }
|
|
* });
|
|
* canvas.renderAll();
|
|
* @example <caption>Set radial gradient</caption>
|
|
* object.setGradient('fill', {
|
|
* type: 'radial',
|
|
* x1: 0,
|
|
* y1: 0,
|
|
* x2: 0,
|
|
* y2: 0,
|
|
* r1: object.width / 2,
|
|
* r2: 10,
|
|
* colorStops: {
|
|
* 0: 'red',
|
|
* 0.5: '#005555',
|
|
* 1: 'rgba(0,0,255,0.5)'
|
|
* }
|
|
* });
|
|
* canvas.renderAll();
|
|
*/
|
|
setGradient: function(property, options) {
|
|
options || (options = { });
|
|
|
|
var gradient = { colorStops: [] };
|
|
|
|
gradient.type = options.type || (options.r1 || options.r2 ? 'radial' : 'linear');
|
|
gradient.coords = {
|
|
x1: options.x1,
|
|
y1: options.y1,
|
|
x2: options.x2,
|
|
y2: options.y2
|
|
};
|
|
|
|
if (options.r1 || options.r2) {
|
|
gradient.coords.r1 = options.r1;
|
|
gradient.coords.r2 = options.r2;
|
|
}
|
|
|
|
for (var position in options.colorStops) {
|
|
var color = new fabric.Color(options.colorStops[position]);
|
|
gradient.colorStops.push({
|
|
offset: position,
|
|
color: color.toRgb(),
|
|
opacity: color.getAlpha()
|
|
});
|
|
}
|
|
|
|
return this.set(property, fabric.Gradient.forObject(this, gradient));
|
|
},
|
|
|
|
/**
|
|
* Sets pattern fill of an object
|
|
* @param {Object} options Options object
|
|
* @param {(String|HTMLImageElement)} options.source Pattern source
|
|
* @param {String} [options.repeat=repeat] Repeat property of a pattern (one of repeat, repeat-x, repeat-y or no-repeat)
|
|
* @param {Number} [options.offsetX=0] Pattern horizontal offset from object's left/top corner
|
|
* @param {Number} [options.offsetY=0] Pattern vertical offset from object's left/top corner
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
* @see {@link http://jsfiddle.net/fabricjs/QT3pa/|jsFiddle demo}
|
|
* @example <caption>Set pattern</caption>
|
|
* fabric.util.loadImage('http://fabricjs.com/assets/escheresque_ste.png', function(img) {
|
|
* object.setPatternFill({
|
|
* source: img,
|
|
* repeat: 'repeat'
|
|
* });
|
|
* canvas.renderAll();
|
|
* });
|
|
*/
|
|
setPatternFill: function(options) {
|
|
return this.set('fill', new fabric.Pattern(options));
|
|
},
|
|
|
|
/**
|
|
* Sets {@link fabric.Object#shadow|shadow} of an object
|
|
* @param {Object|String} [options] Options object or string (e.g. "2px 2px 10px rgba(0,0,0,0.2)")
|
|
* @param {String} [options.color=rgb(0,0,0)] Shadow color
|
|
* @param {Number} [options.blur=0] Shadow blur
|
|
* @param {Number} [options.offsetX=0] Shadow horizontal offset
|
|
* @param {Number} [options.offsetY=0] Shadow vertical offset
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
* @see {@link http://jsfiddle.net/fabricjs/7gvJG/|jsFiddle demo}
|
|
* @example <caption>Set shadow with string notation</caption>
|
|
* object.setShadow('2px 2px 10px rgba(0,0,0,0.2)');
|
|
* canvas.renderAll();
|
|
* @example <caption>Set shadow with object notation</caption>
|
|
* object.setShadow({
|
|
* color: 'red',
|
|
* blur: 10,
|
|
* offsetX: 20,
|
|
* offsetY: 20
|
|
* });
|
|
* canvas.renderAll();
|
|
*/
|
|
setShadow: function(options) {
|
|
return this.set('shadow', options ? new fabric.Shadow(options) : null);
|
|
},
|
|
|
|
/**
|
|
* Sets "color" of an instance (alias of `set('fill', …)`)
|
|
* @param {String} color Color value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
setColor: function(color) {
|
|
this.set('fill', color);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets "angle" of an instance
|
|
* @param {Number} angle Angle value
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
setAngle: function(angle) {
|
|
var shouldCenterOrigin = (this.originX !== 'center' || this.originY !== 'center') && this.centeredRotation;
|
|
|
|
if (shouldCenterOrigin) {
|
|
this._setOriginToCenter();
|
|
}
|
|
|
|
this.set('angle', angle);
|
|
|
|
if (shouldCenterOrigin) {
|
|
this._resetOrigin();
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Centers object horizontally on canvas to which it was added last.
|
|
* You might need to call `setCoords` on an object after centering, to update controls area.
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
centerH: function () {
|
|
this.canvas.centerObjectH(this);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Centers object vertically on canvas to which it was added last.
|
|
* You might need to call `setCoords` on an object after centering, to update controls area.
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
centerV: function () {
|
|
this.canvas.centerObjectV(this);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Centers object vertically and horizontally on canvas to which is was added last
|
|
* You might need to call `setCoords` on an object after centering, to update controls area.
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
center: function () {
|
|
this.canvas.centerObject(this);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Removes object from canvas to which it was added last
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
remove: function() {
|
|
this.canvas.remove(this);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns coordinates of a pointer relative to an object
|
|
* @param {Event} e Event to operate upon
|
|
* @param {Object} [pointer] Pointer to operate upon (instead of event)
|
|
* @return {Object} Coordinates of a pointer (x, y)
|
|
*/
|
|
getLocalPointer: function(e, pointer) {
|
|
pointer = pointer || this.canvas.getPointer(e);
|
|
var objectLeftTop = this.translateToOriginPoint(this.getCenterPoint(), 'left', 'top');
|
|
return {
|
|
x: pointer.x - objectLeftTop.x,
|
|
y: pointer.y - objectLeftTop.y
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Sets canvas globalCompositeOperation for specific object
|
|
* custom composition operation for the particular object can be specifed using fillRule property
|
|
* @param {CanvasRenderingContext2D} ctx Rendering canvas context
|
|
*/
|
|
_setupFillRule: function (ctx) {
|
|
if (this.fillRule) {
|
|
this._prevFillRule = ctx.globalCompositeOperation;
|
|
ctx.globalCompositeOperation = this.fillRule;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Restores previously saved canvas globalCompositeOperation after obeject rendering
|
|
* @param {CanvasRenderingContext2D} ctx Rendering canvas context
|
|
*/
|
|
_restoreFillRule: function (ctx) {
|
|
if (this.fillRule && this._prevFillRule) {
|
|
ctx.globalCompositeOperation = this._prevFillRule;
|
|
}
|
|
}
|
|
});
|
|
|
|
fabric.util.createAccessors(fabric.Object);
|
|
|
|
/**
|
|
* Alias for {@link fabric.Object.prototype.setAngle}
|
|
* @alias rotate -> setAngle
|
|
* @memberof fabric.Object
|
|
*/
|
|
fabric.Object.prototype.rotate = fabric.Object.prototype.setAngle;
|
|
|
|
extend(fabric.Object.prototype, fabric.Observable);
|
|
|
|
/**
|
|
* Defines the number of fraction digits to use when serializing object values.
|
|
* You can use it to increase/decrease precision of such values like left, top, scaleX, scaleY, etc.
|
|
* @static
|
|
* @memberof fabric.Object
|
|
* @constant
|
|
* @type Number
|
|
*/
|
|
fabric.Object.NUM_FRACTION_DIGITS = 2;
|
|
|
|
/**
|
|
* Unique id used internally when creating SVG elements
|
|
* @static
|
|
* @memberof fabric.Object
|
|
* @type Number
|
|
*/
|
|
fabric.Object.__uid = 0;
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function() {
|
|
|
|
var degreesToRadians = fabric.util.degreesToRadians;
|
|
|
|
fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ {
|
|
|
|
/**
|
|
* Translates the coordinates from origin to center coordinates (based on the object's dimensions)
|
|
* @param {fabric.Point} point The point which corresponds to the originX and originY params
|
|
* @param {String} originX Horizontal origin: 'left', 'center' or 'right'
|
|
* @param {String} originY Vertical origin: 'top', 'center' or 'bottom'
|
|
* @return {fabric.Point}
|
|
*/
|
|
translateToCenterPoint: function(point, originX, originY) {
|
|
var cx = point.x,
|
|
cy = point.y,
|
|
strokeWidth = this.stroke ? this.strokeWidth : 0;
|
|
|
|
if (originX === 'left') {
|
|
cx = point.x + (this.getWidth() + strokeWidth * this.scaleX) / 2;
|
|
}
|
|
else if (originX === 'right') {
|
|
cx = point.x - (this.getWidth() + strokeWidth * this.scaleX) / 2;
|
|
}
|
|
|
|
if (originY === 'top') {
|
|
cy = point.y + (this.getHeight() + strokeWidth * this.scaleY) / 2;
|
|
}
|
|
else if (originY === 'bottom') {
|
|
cy = point.y - (this.getHeight() + strokeWidth * this.scaleY) / 2;
|
|
}
|
|
|
|
// Apply the reverse rotation to the point (it's already scaled properly)
|
|
return fabric.util.rotatePoint(new fabric.Point(cx, cy), point, degreesToRadians(this.angle));
|
|
},
|
|
|
|
/**
|
|
* Translates the coordinates from center to origin coordinates (based on the object's dimensions)
|
|
* @param {fabric.Point} center The point which corresponds to center of the object
|
|
* @param {String} originX Horizontal origin: 'left', 'center' or 'right'
|
|
* @param {String} originY Vertical origin: 'top', 'center' or 'bottom'
|
|
* @return {fabric.Point}
|
|
*/
|
|
translateToOriginPoint: function(center, originX, originY) {
|
|
var x = center.x,
|
|
y = center.y,
|
|
strokeWidth = this.stroke ? this.strokeWidth : 0;
|
|
|
|
// Get the point coordinates
|
|
if (originX === 'left') {
|
|
x = center.x - (this.getWidth() + strokeWidth * this.scaleX) / 2;
|
|
}
|
|
else if (originX === 'right') {
|
|
x = center.x + (this.getWidth() + strokeWidth * this.scaleX) / 2;
|
|
}
|
|
if (originY === 'top') {
|
|
y = center.y - (this.getHeight() + strokeWidth * this.scaleY) / 2;
|
|
}
|
|
else if (originY === 'bottom') {
|
|
y = center.y + (this.getHeight() + strokeWidth * this.scaleY) / 2;
|
|
}
|
|
|
|
// Apply the rotation to the point (it's already scaled properly)
|
|
return fabric.util.rotatePoint(new fabric.Point(x, y), center, degreesToRadians(this.angle));
|
|
},
|
|
|
|
/**
|
|
* Returns the real center coordinates of the object
|
|
* @return {fabric.Point}
|
|
*/
|
|
getCenterPoint: function() {
|
|
var leftTop = new fabric.Point(this.left, this.top);
|
|
return this.translateToCenterPoint(leftTop, this.originX, this.originY);
|
|
},
|
|
|
|
/**
|
|
* Returns the coordinates of the object based on center coordinates
|
|
* @param {fabric.Point} point The point which corresponds to the originX and originY params
|
|
* @return {fabric.Point}
|
|
*/
|
|
// getOriginPoint: function(center) {
|
|
// return this.translateToOriginPoint(center, this.originX, this.originY);
|
|
// },
|
|
|
|
/**
|
|
* Returns the coordinates of the object as if it has a different origin
|
|
* @param {String} originX Horizontal origin: 'left', 'center' or 'right'
|
|
* @param {String} originY Vertical origin: 'top', 'center' or 'bottom'
|
|
* @return {fabric.Point}
|
|
*/
|
|
getPointByOrigin: function(originX, originY) {
|
|
var center = this.getCenterPoint();
|
|
return this.translateToOriginPoint(center, originX, originY);
|
|
},
|
|
|
|
/**
|
|
* Returns the point in local coordinates
|
|
* @param {fabric.Point} point The point relative to the global coordinate system
|
|
* @param {String} originX Horizontal origin: 'left', 'center' or 'right'
|
|
* @param {String} originY Vertical origin: 'top', 'center' or 'bottom'
|
|
* @return {fabric.Point}
|
|
*/
|
|
toLocalPoint: function(point, originX, originY) {
|
|
var center = this.getCenterPoint(),
|
|
strokeWidth = this.stroke ? this.strokeWidth : 0,
|
|
x, y;
|
|
|
|
if (originX && originY) {
|
|
if (originX === 'left') {
|
|
x = center.x - (this.getWidth() + strokeWidth * this.scaleX) / 2;
|
|
}
|
|
else if (originX === 'right') {
|
|
x = center.x + (this.getWidth() + strokeWidth * this.scaleX) / 2;
|
|
}
|
|
else {
|
|
x = center.x;
|
|
}
|
|
|
|
if (originY === 'top') {
|
|
y = center.y - (this.getHeight() + strokeWidth * this.scaleY) / 2;
|
|
}
|
|
else if (originY === 'bottom') {
|
|
y = center.y + (this.getHeight() + strokeWidth * this.scaleY) / 2;
|
|
}
|
|
else {
|
|
y = center.y;
|
|
}
|
|
}
|
|
else {
|
|
x = this.left;
|
|
y = this.top;
|
|
}
|
|
|
|
return fabric.util.rotatePoint(new fabric.Point(point.x, point.y), center, -degreesToRadians(this.angle))
|
|
.subtractEquals(new fabric.Point(x, y));
|
|
},
|
|
|
|
/**
|
|
* Returns the point in global coordinates
|
|
* @param {fabric.Point} The point relative to the local coordinate system
|
|
* @return {fabric.Point}
|
|
*/
|
|
// toGlobalPoint: function(point) {
|
|
// return fabric.util.rotatePoint(point, this.getCenterPoint(), degreesToRadians(this.angle)).addEquals(new fabric.Point(this.left, this.top));
|
|
// },
|
|
|
|
/**
|
|
* Sets the position of the object taking into consideration the object's origin
|
|
* @param {fabric.Point} pos The new position of the object
|
|
* @param {String} originX Horizontal origin: 'left', 'center' or 'right'
|
|
* @param {String} originY Vertical origin: 'top', 'center' or 'bottom'
|
|
* @return {void}
|
|
*/
|
|
setPositionByOrigin: function(pos, originX, originY) {
|
|
var center = this.translateToCenterPoint(pos, originX, originY),
|
|
position = this.translateToOriginPoint(center, this.originX, this.originY);
|
|
|
|
this.set('left', position.x);
|
|
this.set('top', position.y);
|
|
},
|
|
|
|
/**
|
|
* @param {String} to One of 'left', 'center', 'right'
|
|
*/
|
|
adjustPosition: function(to) {
|
|
var angle = degreesToRadians(this.angle),
|
|
hypotHalf = this.getWidth() / 2,
|
|
xHalf = Math.cos(angle) * hypotHalf,
|
|
yHalf = Math.sin(angle) * hypotHalf,
|
|
hypotFull = this.getWidth(),
|
|
xFull = Math.cos(angle) * hypotFull,
|
|
yFull = Math.sin(angle) * hypotFull;
|
|
|
|
if (this.originX === 'center' && to === 'left' ||
|
|
this.originX === 'right' && to === 'center') {
|
|
// move half left
|
|
this.left -= xHalf;
|
|
this.top -= yHalf;
|
|
}
|
|
else if (this.originX === 'left' && to === 'center' ||
|
|
this.originX === 'center' && to === 'right') {
|
|
// move half right
|
|
this.left += xHalf;
|
|
this.top += yHalf;
|
|
}
|
|
else if (this.originX === 'left' && to === 'right') {
|
|
// move full right
|
|
this.left += xFull;
|
|
this.top += yFull;
|
|
}
|
|
else if (this.originX === 'right' && to === 'left') {
|
|
// move full left
|
|
this.left -= xFull;
|
|
this.top -= yFull;
|
|
}
|
|
|
|
this.setCoords();
|
|
this.originX = to;
|
|
},
|
|
|
|
/**
|
|
* Sets the origin/position of the object to it's center point
|
|
* @private
|
|
* @return {void}
|
|
*/
|
|
_setOriginToCenter: function() {
|
|
this._originalOriginX = this.originX;
|
|
this._originalOriginY = this.originY;
|
|
|
|
var center = this.getCenterPoint();
|
|
|
|
this.originX = 'center';
|
|
this.originY = 'center';
|
|
|
|
this.left = center.x;
|
|
this.top = center.y;
|
|
},
|
|
|
|
/**
|
|
* Resets the origin/position of the object to it's original origin
|
|
* @private
|
|
* @return {void}
|
|
*/
|
|
_resetOrigin: function() {
|
|
var originPoint = this.translateToOriginPoint(
|
|
this.getCenterPoint(),
|
|
this._originalOriginX,
|
|
this._originalOriginY);
|
|
|
|
this.originX = this._originalOriginX;
|
|
this.originY = this._originalOriginY;
|
|
|
|
this.left = originPoint.x;
|
|
this.top = originPoint.y;
|
|
|
|
this._originalOriginX = null;
|
|
this._originalOriginY = null;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getLeftTopCoords: function() {
|
|
return this.translateToOriginPoint(this.getCenterPoint(), 'left', 'center');
|
|
}
|
|
});
|
|
|
|
})();
|
|
|
|
|
|
(function() {
|
|
|
|
var degreesToRadians = fabric.util.degreesToRadians;
|
|
|
|
fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ {
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/**
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* Object containing coordinates of object's controls
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* @type Object
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* @default
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*/
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oCoords: null,
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/**
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* Checks if object intersects with an area formed by 2 points
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* @param {Object} pointTL top-left point of area
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* @param {Object} pointBR bottom-right point of area
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* @return {Boolean} true if object intersects with an area formed by 2 points
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*/
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intersectsWithRect: function(pointTL, pointBR) {
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var oCoords = this.oCoords,
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tl = new fabric.Point(oCoords.tl.x, oCoords.tl.y),
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tr = new fabric.Point(oCoords.tr.x, oCoords.tr.y),
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bl = new fabric.Point(oCoords.bl.x, oCoords.bl.y),
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br = new fabric.Point(oCoords.br.x, oCoords.br.y),
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intersection = fabric.Intersection.intersectPolygonRectangle(
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[tl, tr, br, bl],
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pointTL,
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pointBR
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);
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return intersection.status === 'Intersection';
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},
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/**
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* Checks if object intersects with another object
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* @param {Object} other Object to test
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* @return {Boolean} true if object intersects with another object
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*/
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intersectsWithObject: function(other) {
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// extracts coords
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function getCoords(oCoords) {
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return {
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tl: new fabric.Point(oCoords.tl.x, oCoords.tl.y),
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tr: new fabric.Point(oCoords.tr.x, oCoords.tr.y),
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bl: new fabric.Point(oCoords.bl.x, oCoords.bl.y),
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br: new fabric.Point(oCoords.br.x, oCoords.br.y)
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};
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}
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var thisCoords = getCoords(this.oCoords),
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otherCoords = getCoords(other.oCoords),
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intersection = fabric.Intersection.intersectPolygonPolygon(
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[thisCoords.tl, thisCoords.tr, thisCoords.br, thisCoords.bl],
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[otherCoords.tl, otherCoords.tr, otherCoords.br, otherCoords.bl]
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);
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return intersection.status === 'Intersection';
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},
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/**
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* Checks if object is fully contained within area of another object
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* @param {Object} other Object to test
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* @return {Boolean} true if object is fully contained within area of another object
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*/
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isContainedWithinObject: function(other) {
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var boundingRect = other.getBoundingRect(),
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point1 = new fabric.Point(boundingRect.left, boundingRect.top),
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point2 = new fabric.Point(boundingRect.left + boundingRect.width, boundingRect.top + boundingRect.height);
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return this.isContainedWithinRect(point1, point2);
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},
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/**
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* Checks if object is fully contained within area formed by 2 points
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* @param {Object} pointTL top-left point of area
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* @param {Object} pointBR bottom-right point of area
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* @return {Boolean} true if object is fully contained within area formed by 2 points
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*/
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isContainedWithinRect: function(pointTL, pointBR) {
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var boundingRect = this.getBoundingRect();
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return (
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boundingRect.left >= pointTL.x &&
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boundingRect.left + boundingRect.width <= pointBR.x &&
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boundingRect.top >= pointTL.y &&
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boundingRect.top + boundingRect.height <= pointBR.y
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);
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},
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/**
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* Checks if point is inside the object
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* @param {fabric.Point} point Point to check against
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* @return {Boolean} true if point is inside the object
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*/
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containsPoint: function(point) {
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var lines = this._getImageLines(this.oCoords),
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xPoints = this._findCrossPoints(point, lines);
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// if xPoints is odd then point is inside the object
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return (xPoints !== 0 && xPoints % 2 === 1);
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},
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/**
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* Method that returns an object with the object edges in it, given the coordinates of the corners
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* @private
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* @param {Object} oCoords Coordinates of the object corners
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*/
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_getImageLines: function(oCoords) {
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return {
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topline: {
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o: oCoords.tl,
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d: oCoords.tr
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},
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rightline: {
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o: oCoords.tr,
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d: oCoords.br
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},
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bottomline: {
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o: oCoords.br,
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d: oCoords.bl
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},
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leftline: {
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o: oCoords.bl,
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d: oCoords.tl
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}
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};
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},
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/**
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* Helper method to determine how many cross points are between the 4 object edges
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* and the horizontal line determined by a point on canvas
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* @private
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* @param {fabric.Point} point Point to check
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* @param {Object} oCoords Coordinates of the object being evaluated
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*/
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_findCrossPoints: function(point, oCoords) {
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var b1, b2, a1, a2, xi, yi,
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xcount = 0,
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iLine;
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for (var lineKey in oCoords) {
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iLine = oCoords[lineKey];
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// optimisation 1: line below point. no cross
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if ((iLine.o.y < point.y) && (iLine.d.y < point.y)) {
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continue;
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}
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// optimisation 2: line above point. no cross
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if ((iLine.o.y >= point.y) && (iLine.d.y >= point.y)) {
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continue;
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}
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// optimisation 3: vertical line case
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if ((iLine.o.x === iLine.d.x) && (iLine.o.x >= point.x)) {
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xi = iLine.o.x;
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yi = point.y;
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}
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// calculate the intersection point
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else {
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b1 = 0;
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b2 = (iLine.d.y - iLine.o.y) / (iLine.d.x - iLine.o.x);
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a1 = point.y - b1 * point.x;
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a2 = iLine.o.y - b2 * iLine.o.x;
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xi = - (a1 - a2) / (b1 - b2);
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yi = a1 + b1 * xi;
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}
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// dont count xi < point.x cases
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if (xi >= point.x) {
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xcount += 1;
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}
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// optimisation 4: specific for square images
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if (xcount === 2) {
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break;
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}
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}
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return xcount;
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},
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/**
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* Returns width of an object's bounding rectangle
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* @deprecated since 1.0.4
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* @return {Number} width value
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*/
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getBoundingRectWidth: function() {
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return this.getBoundingRect().width;
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},
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/**
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* Returns height of an object's bounding rectangle
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* @deprecated since 1.0.4
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* @return {Number} height value
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*/
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getBoundingRectHeight: function() {
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return this.getBoundingRect().height;
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},
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/**
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* Returns coordinates of object's bounding rectangle (left, top, width, height)
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* @return {Object} Object with left, top, width, height properties
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*/
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getBoundingRect: function() {
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this.oCoords || this.setCoords();
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var xCoords = [this.oCoords.tl.x, this.oCoords.tr.x, this.oCoords.br.x, this.oCoords.bl.x],
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minX = fabric.util.array.min(xCoords),
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maxX = fabric.util.array.max(xCoords),
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width = Math.abs(minX - maxX),
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yCoords = [this.oCoords.tl.y, this.oCoords.tr.y, this.oCoords.br.y, this.oCoords.bl.y],
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minY = fabric.util.array.min(yCoords),
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maxY = fabric.util.array.max(yCoords),
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height = Math.abs(minY - maxY);
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return {
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left: minX,
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top: minY,
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width: width,
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height: height
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};
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},
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/**
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* Returns width of an object
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* @return {Number} width value
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*/
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getWidth: function() {
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return this.width * this.scaleX;
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},
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/**
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* Returns height of an object
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* @return {Number} height value
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*/
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getHeight: function() {
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return this.height * this.scaleY;
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},
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/**
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* Makes sure the scale is valid and modifies it if necessary
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* @private
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* @param {Number} value
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* @return {Number}
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*/
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_constrainScale: function(value) {
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if (Math.abs(value) < this.minScaleLimit) {
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if (value < 0) {
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return -this.minScaleLimit;
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}
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else {
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return this.minScaleLimit;
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}
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}
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return value;
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},
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/**
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* Scales an object (equally by x and y)
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* @param {Number} value Scale factor
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* @return {fabric.Object} thisArg
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* @chainable
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*/
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scale: function(value) {
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value = this._constrainScale(value);
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if (value < 0) {
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this.flipX = !this.flipX;
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this.flipY = !this.flipY;
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value *= -1;
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}
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this.scaleX = value;
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this.scaleY = value;
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this.setCoords();
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return this;
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},
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/**
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* Scales an object to a given width, with respect to bounding box (scaling by x/y equally)
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* @param {Number} value New width value
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* @return {fabric.Object} thisArg
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* @chainable
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*/
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scaleToWidth: function(value) {
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// adjust to bounding rect factor so that rotated shapes would fit as well
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var boundingRectFactor = this.getBoundingRectWidth() / this.getWidth();
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return this.scale(value / this.width / boundingRectFactor);
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},
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/**
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* Scales an object to a given height, with respect to bounding box (scaling by x/y equally)
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* @param {Number} value New height value
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* @return {fabric.Object} thisArg
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* @chainable
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*/
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scaleToHeight: function(value) {
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// adjust to bounding rect factor so that rotated shapes would fit as well
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var boundingRectFactor = this.getBoundingRectHeight() / this.getHeight();
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return this.scale(value / this.height / boundingRectFactor);
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},
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/**
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* Sets corner position coordinates based on current angle, width and height
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* @return {fabric.Object} thisArg
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* @chainable
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*/
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setCoords: function() {
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var strokeWidth = this.strokeWidth > 1 ? this.strokeWidth : 0,
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theta = degreesToRadians(this.angle),
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vpt = this.getViewportTransform(),
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f = function (p) {
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return fabric.util.transformPoint(p, vpt);
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},
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w = this.width,
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h = this.height,
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capped = this.strokeLineCap === 'round' || this.strokeLineCap === 'square',
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vLine = this.type === 'line' && this.width === 1,
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hLine = this.type === 'line' && this.height === 1,
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strokeW = (capped && hLine) || this.type !== 'line',
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strokeH = (capped && vLine) || this.type !== 'line';
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if (vLine) {
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w = strokeWidth;
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}
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else if (hLine) {
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h = strokeWidth;
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}
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if (strokeW) {
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w += strokeWidth;
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}
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if (strokeH) {
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h += strokeWidth;
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}
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this.currentWidth = w * this.scaleX;
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this.currentHeight = h * this.scaleY;
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// If width is negative, make postive. Fixes path selection issue
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if (this.currentWidth < 0) {
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this.currentWidth = Math.abs(this.currentWidth);
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}
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var _hypotenuse = Math.sqrt(
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Math.pow(this.currentWidth / 2, 2) +
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Math.pow(this.currentHeight / 2, 2)),
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_angle = Math.atan(isFinite(this.currentHeight / this.currentWidth) ? this.currentHeight / this.currentWidth : 0),
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// offset added for rotate and scale actions
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offsetX = Math.cos(_angle + theta) * _hypotenuse,
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offsetY = Math.sin(_angle + theta) * _hypotenuse,
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sinTh = Math.sin(theta),
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cosTh = Math.cos(theta),
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coords = this.getCenterPoint(),
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wh = new fabric.Point(this.currentWidth, this.currentHeight),
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_tl = new fabric.Point(coords.x - offsetX, coords.y - offsetY),
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_tr = new fabric.Point(_tl.x + (wh.x * cosTh), _tl.y + (wh.x * sinTh)),
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_bl = new fabric.Point(_tl.x - (wh.y * sinTh), _tl.y + (wh.y * cosTh)),
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_mt = new fabric.Point(_tl.x + (wh.x/2 * cosTh), _tl.y + (wh.x/2 * sinTh)),
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tl = f(_tl),
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tr = f(_tr),
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br = f(new fabric.Point(_tr.x - (wh.y * sinTh), _tr.y + (wh.y * cosTh))),
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bl = f(_bl),
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ml = f(new fabric.Point(_tl.x - (wh.y/2 * sinTh), _tl.y + (wh.y/2 * cosTh))),
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mt = f(_mt),
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mr = f(new fabric.Point(_tr.x - (wh.y/2 * sinTh), _tr.y + (wh.y/2 * cosTh))),
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mb = f(new fabric.Point(_bl.x + (wh.x/2 * cosTh), _bl.y + (wh.x/2 * sinTh))),
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mtr = f(new fabric.Point(_mt.x, _mt.y)),
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// padding
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padX = Math.cos(_angle + theta) * this.padding * Math.sqrt(2),
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padY = Math.sin(_angle + theta) * this.padding * Math.sqrt(2);
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tl = tl.add(new fabric.Point(-padX, -padY));
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tr = tr.add(new fabric.Point(padY, -padX));
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br = br.add(new fabric.Point(padX, padY));
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bl = bl.add(new fabric.Point(-padY, padX));
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ml = ml.add(new fabric.Point((-padX - padY) / 2, (-padY + padX) / 2));
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mt = mt.add(new fabric.Point((padY - padX) / 2, -(padY + padX) / 2));
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mr = mr.add(new fabric.Point((padY + padX) / 2, (padY - padX) / 2));
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mb = mb.add(new fabric.Point((padX - padY) / 2, (padX + padY) / 2));
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mtr = mtr.add(new fabric.Point((padY - padX) / 2, -(padY + padX) / 2));
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// debugging
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// setTimeout(function() {
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// canvas.contextTop.fillStyle = 'green';
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// canvas.contextTop.fillRect(mb.x, mb.y, 3, 3);
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// canvas.contextTop.fillRect(bl.x, bl.y, 3, 3);
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// canvas.contextTop.fillRect(br.x, br.y, 3, 3);
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// canvas.contextTop.fillRect(tl.x, tl.y, 3, 3);
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// canvas.contextTop.fillRect(tr.x, tr.y, 3, 3);
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// canvas.contextTop.fillRect(ml.x, ml.y, 3, 3);
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// canvas.contextTop.fillRect(mr.x, mr.y, 3, 3);
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// canvas.contextTop.fillRect(mt.x, mt.y, 3, 3);
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// }, 50);
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this.oCoords = {
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// corners
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tl: tl, tr: tr, br: br, bl: bl,
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// middle
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ml: ml, mt: mt, mr: mr, mb: mb,
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// rotating point
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mtr: mtr
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};
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// set coordinates of the draggable boxes in the corners used to scale/rotate the image
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this._setCornerCoords && this._setCornerCoords();
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return this;
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}
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});
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})();
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fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ {
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|
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/**
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* Moves an object to the bottom of the stack of drawn objects
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* @return {fabric.Object} thisArg
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* @chainable
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*/
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sendToBack: function() {
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if (this.group) {
|
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fabric.StaticCanvas.prototype.sendToBack.call(this.group, this);
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}
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else {
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this.canvas.sendToBack(this);
|
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}
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return this;
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},
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|
|
|
/**
|
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* Moves an object to the top of the stack of drawn objects
|
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* @return {fabric.Object} thisArg
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* @chainable
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*/
|
|
bringToFront: function() {
|
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if (this.group) {
|
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fabric.StaticCanvas.prototype.bringToFront.call(this.group, this);
|
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}
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else {
|
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this.canvas.bringToFront(this);
|
|
}
|
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return this;
|
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},
|
|
|
|
/**
|
|
* Moves an object down in stack of drawn objects
|
|
* @param {Boolean} [intersecting] If `true`, send object behind next lower intersecting object
|
|
* @return {fabric.Object} thisArg
|
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* @chainable
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|
*/
|
|
sendBackwards: function(intersecting) {
|
|
if (this.group) {
|
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fabric.StaticCanvas.prototype.sendBackwards.call(this.group, this, intersecting);
|
|
}
|
|
else {
|
|
this.canvas.sendBackwards(this, intersecting);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Moves an object up in stack of drawn objects
|
|
* @param {Boolean} [intersecting] If `true`, send object in front of next upper intersecting object
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
bringForward: function(intersecting) {
|
|
if (this.group) {
|
|
fabric.StaticCanvas.prototype.bringForward.call(this.group, this, intersecting);
|
|
}
|
|
else {
|
|
this.canvas.bringForward(this, intersecting);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Moves an object to specified level in stack of drawn objects
|
|
* @param {Number} index New position of object
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
moveTo: function(index) {
|
|
if (this.group) {
|
|
fabric.StaticCanvas.prototype.moveTo.call(this.group, this, index);
|
|
}
|
|
else {
|
|
this.canvas.moveTo(this, index);
|
|
}
|
|
return this;
|
|
}
|
|
});
|
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|
|
|
|
/* _TO_SVG_START_ */
|
|
fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ {
|
|
|
|
/**
|
|
* Returns styles-string for svg-export
|
|
* @return {String}
|
|
*/
|
|
getSvgStyles: function() {
|
|
|
|
var fill = this.fill
|
|
? (this.fill.toLive ? 'url(#SVGID_' + this.fill.id + ')' : this.fill)
|
|
: 'none',
|
|
fillRule = (this.fillRule === 'destination-over' ? 'evenodd' : this.fillRule),
|
|
stroke = this.stroke
|
|
? (this.stroke.toLive ? 'url(#SVGID_' + this.stroke.id + ')' : this.stroke)
|
|
: 'none',
|
|
|
|
strokeWidth = this.strokeWidth ? this.strokeWidth : '0',
|
|
strokeDashArray = this.strokeDashArray ? this.strokeDashArray.join(' ') : '',
|
|
strokeLineCap = this.strokeLineCap ? this.strokeLineCap : 'butt',
|
|
strokeLineJoin = this.strokeLineJoin ? this.strokeLineJoin : 'miter',
|
|
strokeMiterLimit = this.strokeMiterLimit ? this.strokeMiterLimit : '4',
|
|
opacity = typeof this.opacity !== 'undefined' ? this.opacity : '1',
|
|
|
|
visibility = this.visible ? '' : ' visibility: hidden;',
|
|
filter = this.shadow && this.type !== 'text' ? 'filter: url(#SVGID_' + this.shadow.id + ');' : '';
|
|
|
|
return [
|
|
'stroke: ', stroke, '; ',
|
|
'stroke-width: ', strokeWidth, '; ',
|
|
'stroke-dasharray: ', strokeDashArray, '; ',
|
|
'stroke-linecap: ', strokeLineCap, '; ',
|
|
'stroke-linejoin: ', strokeLineJoin, '; ',
|
|
'stroke-miterlimit: ', strokeMiterLimit, '; ',
|
|
'fill: ', fill, '; ',
|
|
'fill-rule: ', fillRule, '; ',
|
|
'opacity: ', opacity, ';',
|
|
filter,
|
|
visibility
|
|
].join('');
|
|
},
|
|
|
|
/**
|
|
* Returns transform-string for svg-export
|
|
* @return {String}
|
|
*/
|
|
getSvgTransform: function() {
|
|
if (this.group) {
|
|
return '';
|
|
}
|
|
var toFixed = fabric.util.toFixed,
|
|
angle = this.getAngle(),
|
|
vpt = !this.canvas || this.canvas.svgViewportTransformation ? this.getViewportTransform() : [1, 0, 0, 1, 0, 0],
|
|
center = fabric.util.transformPoint(this.getCenterPoint(), vpt),
|
|
|
|
NUM_FRACTION_DIGITS = fabric.Object.NUM_FRACTION_DIGITS,
|
|
|
|
translatePart = this.type === 'path-group' ? '' : 'translate(' +
|
|
toFixed(center.x, NUM_FRACTION_DIGITS) +
|
|
' ' +
|
|
toFixed(center.y, NUM_FRACTION_DIGITS) +
|
|
')',
|
|
|
|
anglePart = angle !== 0
|
|
? (' rotate(' + toFixed(angle, NUM_FRACTION_DIGITS) + ')')
|
|
: '',
|
|
|
|
scalePart = (this.scaleX === 1 && this.scaleY === 1 && vpt[0] === 1 && vpt[3] === 1)
|
|
? '' :
|
|
(' scale(' +
|
|
toFixed(this.scaleX * vpt[0], NUM_FRACTION_DIGITS) +
|
|
' ' +
|
|
toFixed(this.scaleY * vpt[3], NUM_FRACTION_DIGITS) +
|
|
')'),
|
|
|
|
addTranslateX = this.type === 'path-group' ? this.width * vpt[0] : 0,
|
|
|
|
flipXPart = this.flipX ? ' matrix(-1 0 0 1 ' + addTranslateX + ' 0) ' : '',
|
|
|
|
addTranslateY = this.type === 'path-group' ? this.height * vpt[3] : 0,
|
|
|
|
flipYPart = this.flipY ? ' matrix(1 0 0 -1 0 ' + addTranslateY + ')' : '';
|
|
|
|
return [
|
|
translatePart, anglePart, scalePart, flipXPart, flipYPart
|
|
].join('');
|
|
},
|
|
|
|
/**
|
|
* Returns transform-string for svg-export from the transform matrix of single elements
|
|
* @return {String}
|
|
*/
|
|
getSvgTransformMatrix: function() {
|
|
return this.transformMatrix ? ' matrix(' + this.transformMatrix.join(' ') + ')' : '';
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_createBaseSVGMarkup: function() {
|
|
var markup = [ ];
|
|
|
|
if (this.fill && this.fill.toLive) {
|
|
markup.push(this.fill.toSVG(this, false));
|
|
}
|
|
if (this.stroke && this.stroke.toLive) {
|
|
markup.push(this.stroke.toSVG(this, false));
|
|
}
|
|
if (this.shadow) {
|
|
markup.push(this.shadow.toSVG(this));
|
|
}
|
|
return markup;
|
|
}
|
|
});
|
|
/* _TO_SVG_END_ */
|
|
|
|
|
|
/*
|
|
Depends on `stateProperties`
|
|
*/
|
|
fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ {
|
|
|
|
/**
|
|
* Returns true if object state (one of its state properties) was changed
|
|
* @return {Boolean} true if instance' state has changed since `{@link fabric.Object#saveState}` was called
|
|
*/
|
|
hasStateChanged: function() {
|
|
return this.stateProperties.some(function(prop) {
|
|
return this.get(prop) !== this.originalState[prop];
|
|
}, this);
|
|
},
|
|
|
|
/**
|
|
* Saves state of an object
|
|
* @param {Object} [options] Object with additional `stateProperties` array to include when saving state
|
|
* @return {fabric.Object} thisArg
|
|
*/
|
|
saveState: function(options) {
|
|
this.stateProperties.forEach(function(prop) {
|
|
this.originalState[prop] = this.get(prop);
|
|
}, this);
|
|
|
|
if (options && options.stateProperties) {
|
|
options.stateProperties.forEach(function(prop) {
|
|
this.originalState[prop] = this.get(prop);
|
|
}, this);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Setups state of an object
|
|
* @return {fabric.Object} thisArg
|
|
*/
|
|
setupState: function() {
|
|
this.originalState = { };
|
|
this.saveState();
|
|
|
|
return this;
|
|
}
|
|
});
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend,
|
|
coordProps = { x1: 1, x2: 1, y1: 1, y2: 1 },
|
|
supportsLineDash = fabric.StaticCanvas.supports('setLineDash');
|
|
|
|
if (fabric.Line) {
|
|
fabric.warn('fabric.Line is already defined');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Line class
|
|
* @class fabric.Line
|
|
* @extends fabric.Object
|
|
* @see {@link fabric.Line#initialize} for constructor definition
|
|
*/
|
|
fabric.Line = fabric.util.createClass(fabric.Object, /** @lends fabric.Line.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'line',
|
|
|
|
/**
|
|
* x value or first line edge
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
x1: 0,
|
|
|
|
/**
|
|
* y value or first line edge
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
y1: 0,
|
|
|
|
/**
|
|
* x value or second line edge
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
x2: 0,
|
|
|
|
/**
|
|
* y value or second line edge
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
y2: 0,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Array} [points] Array of points
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Line} thisArg
|
|
*/
|
|
initialize: function(points, options) {
|
|
options = options || { };
|
|
|
|
if (!points) {
|
|
points = [0, 0, 0, 0];
|
|
}
|
|
|
|
this.callSuper('initialize', options);
|
|
|
|
this.set('x1', points[0]);
|
|
this.set('y1', points[1]);
|
|
this.set('x2', points[2]);
|
|
this.set('y2', points[3]);
|
|
|
|
this._setWidthHeight(options);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} [options] Options
|
|
*/
|
|
_setWidthHeight: function(options) {
|
|
options || (options = { });
|
|
|
|
this.width = Math.abs(this.x2 - this.x1) || 1;
|
|
this.height = Math.abs(this.y2 - this.y1) || 1;
|
|
|
|
this.left = 'left' in options
|
|
? options.left
|
|
: this._getLeftToOriginX();
|
|
|
|
this.top = 'top' in options
|
|
? options.top
|
|
: this._getTopToOriginY();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} key
|
|
* @param {Any} value
|
|
*/
|
|
_set: function(key, value) {
|
|
this[key] = value;
|
|
if (typeof coordProps[key] !== 'undefined') {
|
|
this._setWidthHeight();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @return {Number} leftToOriginX Distance from left edge of canvas to originX of Line.
|
|
*/
|
|
_getLeftToOriginX: makeEdgeToOriginGetter(
|
|
{ // property names
|
|
origin: 'originX',
|
|
axis1: 'x1',
|
|
axis2: 'x2',
|
|
dimension: 'width'
|
|
},
|
|
{ // possible values of origin
|
|
nearest: 'left',
|
|
center: 'center',
|
|
farthest: 'right'
|
|
}
|
|
),
|
|
|
|
/**
|
|
* @private
|
|
* @return {Number} topToOriginY Distance from top edge of canvas to originY of Line.
|
|
*/
|
|
_getTopToOriginY: makeEdgeToOriginGetter(
|
|
{ // property names
|
|
origin: 'originY',
|
|
axis1: 'y1',
|
|
axis2: 'y2',
|
|
dimension: 'height'
|
|
},
|
|
{ // possible values of origin
|
|
nearest: 'top',
|
|
center: 'center',
|
|
farthest: 'bottom'
|
|
}
|
|
),
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_render: function(ctx, noTransform) {
|
|
ctx.beginPath();
|
|
|
|
if (noTransform) {
|
|
// Line coords are distances from left-top of canvas to origin of line.
|
|
//
|
|
// To render line in a path-group, we need to translate them to
|
|
// distances from center of path-group to center of line.
|
|
var cp = this.getCenterPoint();
|
|
ctx.translate(
|
|
cp.x,
|
|
cp.y
|
|
);
|
|
}
|
|
|
|
if (!this.strokeDashArray || this.strokeDashArray && supportsLineDash) {
|
|
|
|
// move from center (of virtual box) to its left/top corner
|
|
// we can't assume x1, y1 is top left and x2, y2 is bottom right
|
|
var xMult = this.x1 <= this.x2 ? -1 : 1,
|
|
yMult = this.y1 <= this.y2 ? -1 : 1;
|
|
|
|
ctx.moveTo(
|
|
this.width === 1 ? 0 : (xMult * this.width / 2),
|
|
this.height === 1 ? 0 : (yMult * this.height / 2));
|
|
|
|
ctx.lineTo(
|
|
this.width === 1 ? 0 : (xMult * -1 * this.width / 2),
|
|
this.height === 1 ? 0 : (yMult * -1 * this.height / 2));
|
|
}
|
|
|
|
ctx.lineWidth = this.strokeWidth;
|
|
|
|
// TODO: test this
|
|
// make sure setting "fill" changes color of a line
|
|
// (by copying fillStyle to strokeStyle, since line is stroked, not filled)
|
|
var origStrokeStyle = ctx.strokeStyle;
|
|
ctx.strokeStyle = this.stroke || ctx.fillStyle;
|
|
this.stroke && this._renderStroke(ctx);
|
|
ctx.strokeStyle = origStrokeStyle;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderDashedStroke: function(ctx) {
|
|
var
|
|
xMult = this.x1 <= this.x2 ? -1 : 1,
|
|
yMult = this.y1 <= this.y2 ? -1 : 1,
|
|
x = this.width === 1 ? 0 : xMult * this.width / 2,
|
|
y = this.height === 1 ? 0 : yMult * this.height / 2;
|
|
|
|
ctx.beginPath();
|
|
fabric.util.drawDashedLine(ctx, x, y, -x, -y, this.strokeDashArray);
|
|
ctx.closePath();
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @methd toObject
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
return extend(this.callSuper('toObject', propertiesToInclude), {
|
|
x1: this.get('x1'),
|
|
y1: this.get('y1'),
|
|
x2: this.get('x2'),
|
|
y2: this.get('y2')
|
|
});
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns SVG representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var markup = this._createBaseSVGMarkup(), addTranslate = '';
|
|
if (!this.group) {
|
|
var x = - this.width / 2 - (this.x1 > this.x2 ? this.x2 : this.x1),
|
|
y = - this.height / 2 - (this.y1 > this.y2 ? this.y2 : this.y1);
|
|
addTranslate = 'translate(' + x + ', ' + y + ') ';
|
|
}
|
|
markup.push(
|
|
'<line ',
|
|
'x1="', this.x1,
|
|
'" y1="', this.y1,
|
|
'" x2="', this.x2,
|
|
'" y2="', this.y2,
|
|
'" style="', this.getSvgStyles(),
|
|
'" transform="', this.getSvgTransform(), addTranslate,
|
|
this.getSvgTransformMatrix(),
|
|
'"/>\n'
|
|
);
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity
|
|
*/
|
|
complexity: function() {
|
|
return 1;
|
|
}
|
|
});
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by {@link fabric.Line.fromElement})
|
|
* @static
|
|
* @memberOf fabric.Line
|
|
* @see http://www.w3.org/TR/SVG/shapes.html#LineElement
|
|
*/
|
|
fabric.Line.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x1 y1 x2 y2'.split(' '));
|
|
|
|
/**
|
|
* Returns fabric.Line instance from an SVG element
|
|
* @static
|
|
* @memberOf fabric.Line
|
|
* @param {SVGElement} element Element to parse
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Line} instance of fabric.Line
|
|
*/
|
|
fabric.Line.fromElement = function(element, options) {
|
|
var parsedAttributes = fabric.parseAttributes(element, fabric.Line.ATTRIBUTE_NAMES),
|
|
points = [
|
|
parsedAttributes.x1 || 0,
|
|
parsedAttributes.y1 || 0,
|
|
parsedAttributes.x2 || 0,
|
|
parsedAttributes.y2 || 0
|
|
];
|
|
return new fabric.Line(points, extend(parsedAttributes, options));
|
|
};
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Returns fabric.Line instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Line
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Line} instance of fabric.Line
|
|
*/
|
|
fabric.Line.fromObject = function(object) {
|
|
var points = [object.x1, object.y1, object.x2, object.y2];
|
|
return new fabric.Line(points, object);
|
|
};
|
|
|
|
/**
|
|
* Produces a function that calculates distance from canvas edge to Line origin.
|
|
*/
|
|
function makeEdgeToOriginGetter(propertyNames, originValues) {
|
|
var origin = propertyNames.origin,
|
|
axis1 = propertyNames.axis1,
|
|
axis2 = propertyNames.axis2,
|
|
dimension = propertyNames.dimension,
|
|
nearest = originValues.nearest,
|
|
center = originValues.center,
|
|
farthest = originValues.farthest;
|
|
|
|
return function() {
|
|
switch (this.get(origin)) {
|
|
case nearest:
|
|
return Math.min(this.get(axis1), this.get(axis2));
|
|
case center:
|
|
return Math.min(this.get(axis1), this.get(axis2)) + (0.5 * this.get(dimension));
|
|
case farthest:
|
|
return Math.max(this.get(axis1), this.get(axis2));
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
piBy2 = Math.PI * 2,
|
|
extend = fabric.util.object.extend;
|
|
|
|
if (fabric.Circle) {
|
|
fabric.warn('fabric.Circle is already defined.');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Circle class
|
|
* @class fabric.Circle
|
|
* @extends fabric.Object
|
|
* @see {@link fabric.Circle#initialize} for constructor definition
|
|
*/
|
|
fabric.Circle = fabric.util.createClass(fabric.Object, /** @lends fabric.Circle.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'circle',
|
|
|
|
/**
|
|
* Radius of this circle
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
radius: 0,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Circle} thisArg
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
|
|
this.callSuper('initialize', options);
|
|
this.set('radius', options.radius || 0);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} key
|
|
* @param {Any} value
|
|
* @return {fabric.Circle} thisArg
|
|
*/
|
|
_set: function(key, value) {
|
|
this.callSuper('_set', key, value);
|
|
|
|
if (key === 'radius') {
|
|
this.setRadius(value);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
return extend(this.callSuper('toObject', propertiesToInclude), {
|
|
radius: this.get('radius')
|
|
});
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns svg representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var markup = this._createBaseSVGMarkup(), x = 0, y = 0;
|
|
if (this.group) {
|
|
x = this.left + this.radius;
|
|
y = this.top + this.radius;
|
|
}
|
|
markup.push(
|
|
'<circle ',
|
|
'cx="' + x + '" cy="' + y + '" ',
|
|
'r="', this.radius,
|
|
'" style="', this.getSvgStyles(),
|
|
'" transform="', this.getSvgTransform(),
|
|
' ', this.getSvgTransformMatrix(),
|
|
'"/>\n'
|
|
);
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx context to render on
|
|
* @param {Boolean} [noTransform] When true, context is not transformed
|
|
*/
|
|
_render: function(ctx, noTransform) {
|
|
ctx.beginPath();
|
|
ctx.arc(noTransform ? this.left + this.radius : 0, noTransform ? this.top + this.radius : 0, this.radius, 0, piBy2, false);
|
|
this._renderFill(ctx);
|
|
this._renderStroke(ctx);
|
|
},
|
|
|
|
/**
|
|
* Returns horizontal radius of an object (according to how an object is scaled)
|
|
* @return {Number}
|
|
*/
|
|
getRadiusX: function() {
|
|
return this.get('radius') * this.get('scaleX');
|
|
},
|
|
|
|
/**
|
|
* Returns vertical radius of an object (according to how an object is scaled)
|
|
* @return {Number}
|
|
*/
|
|
getRadiusY: function() {
|
|
return this.get('radius') * this.get('scaleY');
|
|
},
|
|
|
|
/**
|
|
* Sets radius of an object (and updates width accordingly)
|
|
* @return {Number}
|
|
*/
|
|
setRadius: function(value) {
|
|
this.radius = value;
|
|
this.set('width', value * 2).set('height', value * 2);
|
|
},
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity of this instance
|
|
*/
|
|
complexity: function() {
|
|
return 1;
|
|
}
|
|
});
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by {@link fabric.Circle.fromElement})
|
|
* @static
|
|
* @memberOf fabric.Circle
|
|
* @see: http://www.w3.org/TR/SVG/shapes.html#CircleElement
|
|
*/
|
|
fabric.Circle.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('cx cy r'.split(' '));
|
|
|
|
/**
|
|
* Returns {@link fabric.Circle} instance from an SVG element
|
|
* @static
|
|
* @memberOf fabric.Circle
|
|
* @param {SVGElement} element Element to parse
|
|
* @param {Object} [options] Options object
|
|
* @throws {Error} If value of `r` attribute is missing or invalid
|
|
* @return {fabric.Circle} Instance of fabric.Circle
|
|
*/
|
|
fabric.Circle.fromElement = function(element, options) {
|
|
options || (options = { });
|
|
|
|
var parsedAttributes = fabric.parseAttributes(element, fabric.Circle.ATTRIBUTE_NAMES);
|
|
|
|
if (!isValidRadius(parsedAttributes)) {
|
|
throw new Error('value of `r` attribute is required and can not be negative');
|
|
}
|
|
|
|
parsedAttributes.left = parsedAttributes.left || 0;
|
|
parsedAttributes.top = parsedAttributes.top || 0;
|
|
|
|
var obj = new fabric.Circle(extend(parsedAttributes, options));
|
|
|
|
obj.left -= obj.radius;
|
|
obj.top -= obj.radius;
|
|
return obj;
|
|
};
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function isValidRadius(attributes) {
|
|
return (('radius' in attributes) && (attributes.radius > 0));
|
|
}
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Returns {@link fabric.Circle} instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Circle
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {Object} Instance of fabric.Circle
|
|
*/
|
|
fabric.Circle.fromObject = function(object) {
|
|
return new fabric.Circle(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
if (fabric.Triangle) {
|
|
fabric.warn('fabric.Triangle is already defined');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Triangle class
|
|
* @class fabric.Triangle
|
|
* @extends fabric.Object
|
|
* @return {fabric.Triangle} thisArg
|
|
* @see {@link fabric.Triangle#initialize} for constructor definition
|
|
*/
|
|
fabric.Triangle = fabric.util.createClass(fabric.Object, /** @lends fabric.Triangle.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'triangle',
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object} [options] Options object
|
|
* @return {Object} thisArg
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
|
|
this.callSuper('initialize', options);
|
|
|
|
this.set('width', options.width || 100)
|
|
.set('height', options.height || 100);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_render: function(ctx) {
|
|
var widthBy2 = this.width / 2,
|
|
heightBy2 = this.height / 2;
|
|
|
|
ctx.beginPath();
|
|
ctx.moveTo(-widthBy2, heightBy2);
|
|
ctx.lineTo(0, -heightBy2);
|
|
ctx.lineTo(widthBy2, heightBy2);
|
|
ctx.closePath();
|
|
|
|
this._renderFill(ctx);
|
|
this._renderStroke(ctx);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderDashedStroke: function(ctx) {
|
|
var widthBy2 = this.width / 2,
|
|
heightBy2 = this.height / 2;
|
|
|
|
ctx.beginPath();
|
|
fabric.util.drawDashedLine(ctx, -widthBy2, heightBy2, 0, -heightBy2, this.strokeDashArray);
|
|
fabric.util.drawDashedLine(ctx, 0, -heightBy2, widthBy2, heightBy2, this.strokeDashArray);
|
|
fabric.util.drawDashedLine(ctx, widthBy2, heightBy2, -widthBy2, heightBy2, this.strokeDashArray);
|
|
ctx.closePath();
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns SVG representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var markup = this._createBaseSVGMarkup(),
|
|
widthBy2 = this.width / 2,
|
|
heightBy2 = this.height / 2,
|
|
points = [
|
|
-widthBy2 + ' ' + heightBy2,
|
|
'0 ' + -heightBy2,
|
|
widthBy2 + ' ' + heightBy2
|
|
]
|
|
.join(',');
|
|
|
|
markup.push(
|
|
'<polygon ',
|
|
'points="', points,
|
|
'" style="', this.getSvgStyles(),
|
|
'" transform="', this.getSvgTransform(),
|
|
'"/>'
|
|
);
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity of this instance
|
|
*/
|
|
complexity: function() {
|
|
return 1;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns fabric.Triangle instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Triangle
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {Object} instance of Canvas.Triangle
|
|
*/
|
|
fabric.Triangle.fromObject = function(object) {
|
|
return new fabric.Triangle(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global){
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
piBy2 = Math.PI * 2,
|
|
extend = fabric.util.object.extend;
|
|
|
|
if (fabric.Ellipse) {
|
|
fabric.warn('fabric.Ellipse is already defined.');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Ellipse class
|
|
* @class fabric.Ellipse
|
|
* @extends fabric.Object
|
|
* @return {fabric.Ellipse} thisArg
|
|
* @see {@link fabric.Ellipse#initialize} for constructor definition
|
|
*/
|
|
fabric.Ellipse = fabric.util.createClass(fabric.Object, /** @lends fabric.Ellipse.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'ellipse',
|
|
|
|
/**
|
|
* Horizontal radius
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
rx: 0,
|
|
|
|
/**
|
|
* Vertical radius
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
ry: 0,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Ellipse} thisArg
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
|
|
this.callSuper('initialize', options);
|
|
|
|
this.set('rx', options.rx || 0);
|
|
this.set('ry', options.ry || 0);
|
|
|
|
this.set('width', this.get('rx') * 2);
|
|
this.set('height', this.get('ry') * 2);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
return extend(this.callSuper('toObject', propertiesToInclude), {
|
|
rx: this.get('rx'),
|
|
ry: this.get('ry')
|
|
});
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns svg representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var markup = this._createBaseSVGMarkup(), x = 0, y = 0;
|
|
if (this.group) {
|
|
x = this.left + this.rx;
|
|
y = this.top + this.ry;
|
|
}
|
|
markup.push(
|
|
'<ellipse ',
|
|
'cx="', x, '" cy="', y, '" ',
|
|
'rx="', this.rx,
|
|
'" ry="', this.ry,
|
|
'" style="', this.getSvgStyles(),
|
|
'" transform="', this.getSvgTransform(),
|
|
this.getSvgTransformMatrix(),
|
|
'"/>\n'
|
|
);
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx context to render on
|
|
* @param {Boolean} [noTransform] When true, context is not transformed
|
|
*/
|
|
_render: function(ctx, noTransform) {
|
|
ctx.beginPath();
|
|
ctx.save();
|
|
ctx.transform(1, 0, 0, this.ry/this.rx, 0, 0);
|
|
ctx.arc(noTransform ? this.left + this.rx : 0, noTransform ? (this.top + this.ry) * this.rx/this.ry : 0, this.rx, 0, piBy2, false);
|
|
ctx.restore();
|
|
this._renderFill(ctx);
|
|
this._renderStroke(ctx);
|
|
},
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity
|
|
*/
|
|
complexity: function() {
|
|
return 1;
|
|
}
|
|
});
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by {@link fabric.Ellipse.fromElement})
|
|
* @static
|
|
* @memberOf fabric.Ellipse
|
|
* @see http://www.w3.org/TR/SVG/shapes.html#EllipseElement
|
|
*/
|
|
fabric.Ellipse.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('cx cy rx ry'.split(' '));
|
|
|
|
/**
|
|
* Returns {@link fabric.Ellipse} instance from an SVG element
|
|
* @static
|
|
* @memberOf fabric.Ellipse
|
|
* @param {SVGElement} element Element to parse
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Ellipse}
|
|
*/
|
|
fabric.Ellipse.fromElement = function(element, options) {
|
|
options || (options = { });
|
|
|
|
var parsedAttributes = fabric.parseAttributes(element, fabric.Ellipse.ATTRIBUTE_NAMES);
|
|
|
|
parsedAttributes.left = parsedAttributes.left || 0;
|
|
parsedAttributes.top = parsedAttributes.top || 0;
|
|
|
|
var ellipse = new fabric.Ellipse(extend(parsedAttributes, options));
|
|
|
|
ellipse.top -= ellipse.ry;
|
|
ellipse.left -= ellipse.rx;
|
|
return ellipse;
|
|
};
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Returns {@link fabric.Ellipse} instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Ellipse
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Ellipse}
|
|
*/
|
|
fabric.Ellipse.fromObject = function(object) {
|
|
return new fabric.Ellipse(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
if (fabric.Rect) {
|
|
console.warn('fabric.Rect is already defined');
|
|
return;
|
|
}
|
|
|
|
var stateProperties = fabric.Object.prototype.stateProperties.concat();
|
|
stateProperties.push('rx', 'ry', 'x', 'y');
|
|
|
|
/**
|
|
* Rectangle class
|
|
* @class fabric.Rect
|
|
* @extends fabric.Object
|
|
* @return {fabric.Rect} thisArg
|
|
* @see {@link fabric.Rect#initialize} for constructor definition
|
|
*/
|
|
fabric.Rect = fabric.util.createClass(fabric.Object, /** @lends fabric.Rect.prototype */ {
|
|
|
|
/**
|
|
* List of properties to consider when checking if state of an object is changed ({@link fabric.Object#hasStateChanged})
|
|
* as well as for history (undo/redo) purposes
|
|
* @type Array
|
|
*/
|
|
stateProperties: stateProperties,
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'rect',
|
|
|
|
/**
|
|
* Horizontal border radius
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
rx: 0,
|
|
|
|
/**
|
|
* Vertical border radius
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
ry: 0,
|
|
|
|
/**
|
|
* Used to specify dash pattern for stroke on this object
|
|
* @type Array
|
|
*/
|
|
strokeDashArray: null,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object} [options] Options object
|
|
* @return {Object} thisArg
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
|
|
this.callSuper('initialize', options);
|
|
this._initRxRy();
|
|
|
|
},
|
|
|
|
/**
|
|
* Initializes rx/ry attributes
|
|
* @private
|
|
*/
|
|
_initRxRy: function() {
|
|
if (this.rx && !this.ry) {
|
|
this.ry = this.rx;
|
|
}
|
|
else if (this.ry && !this.rx) {
|
|
this.rx = this.ry;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_render: function(ctx, noTransform) {
|
|
|
|
// optimize 1x1 case (used in spray brush)
|
|
if (this.width === 1 && this.height === 1) {
|
|
ctx.fillRect(0, 0, 1, 1);
|
|
return;
|
|
}
|
|
|
|
var rx = this.rx ? Math.min(this.rx, this.width / 2) : 0,
|
|
ry = this.ry ? Math.min(this.ry, this.height / 2) : 0,
|
|
w = this.width,
|
|
h = this.height,
|
|
x = noTransform ? this.left : -this.width / 2,
|
|
y = noTransform ? this.top : -this.height / 2,
|
|
isRounded = rx !== 0 || ry !== 0,
|
|
k = 1 - 0.5522847498 /* "magic number" for bezier approximations of arcs (http://itc.ktu.lt/itc354/Riskus354.pdf) */;
|
|
|
|
ctx.beginPath();
|
|
|
|
ctx.moveTo(x + rx, y);
|
|
|
|
ctx.lineTo(x + w - rx, y);
|
|
isRounded && ctx.bezierCurveTo(x + w - k * rx, y, x + w, y + k * ry, x + w, y + ry);
|
|
|
|
ctx.lineTo(x + w, y + h - ry);
|
|
isRounded && ctx.bezierCurveTo(x + w, y + h - k * ry, x + w - k * rx, y + h, x + w - rx, y + h);
|
|
|
|
ctx.lineTo(x + rx, y + h);
|
|
isRounded && ctx.bezierCurveTo(x + k * rx, y + h, x, y + h - k * ry, x, y + h - ry);
|
|
|
|
ctx.lineTo(x, y + ry);
|
|
isRounded && ctx.bezierCurveTo(x, y + k * ry, x + k * rx, y, x + rx, y);
|
|
|
|
ctx.closePath();
|
|
|
|
this._renderFill(ctx);
|
|
this._renderStroke(ctx);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderDashedStroke: function(ctx) {
|
|
var x = -this.width / 2,
|
|
y = -this.height / 2,
|
|
w = this.width,
|
|
h = this.height;
|
|
|
|
ctx.beginPath();
|
|
fabric.util.drawDashedLine(ctx, x, y, x + w, y, this.strokeDashArray);
|
|
fabric.util.drawDashedLine(ctx, x + w, y, x + w, y + h, this.strokeDashArray);
|
|
fabric.util.drawDashedLine(ctx, x + w, y + h, x, y + h, this.strokeDashArray);
|
|
fabric.util.drawDashedLine(ctx, x, y + h, x, y, this.strokeDashArray);
|
|
ctx.closePath();
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
var object = extend(this.callSuper('toObject', propertiesToInclude), {
|
|
rx: this.get('rx') || 0,
|
|
ry: this.get('ry') || 0
|
|
});
|
|
if (!this.includeDefaultValues) {
|
|
this._removeDefaultValues(object);
|
|
}
|
|
return object;
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns svg representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var markup = this._createBaseSVGMarkup(), x = this.left, y = this.top;
|
|
if (!this.group) {
|
|
x = -this.width / 2;
|
|
y = -this.height / 2;
|
|
}
|
|
markup.push(
|
|
'<rect ',
|
|
'x="', x, '" y="', y,
|
|
'" rx="', this.get('rx'), '" ry="', this.get('ry'),
|
|
'" width="', this.width, '" height="', this.height,
|
|
'" style="', this.getSvgStyles(),
|
|
'" transform="', this.getSvgTransform(),
|
|
this.getSvgTransformMatrix(),
|
|
'"/>\n');
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity
|
|
*/
|
|
complexity: function() {
|
|
return 1;
|
|
}
|
|
});
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by `fabric.Rect.fromElement`)
|
|
* @static
|
|
* @memberOf fabric.Rect
|
|
* @see: http://www.w3.org/TR/SVG/shapes.html#RectElement
|
|
*/
|
|
fabric.Rect.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x y rx ry width height'.split(' '));
|
|
|
|
/**
|
|
* Returns {@link fabric.Rect} instance from an SVG element
|
|
* @static
|
|
* @memberOf fabric.Rect
|
|
* @param {SVGElement} element Element to parse
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Rect} Instance of fabric.Rect
|
|
*/
|
|
fabric.Rect.fromElement = function(element, options) {
|
|
if (!element) {
|
|
return null;
|
|
}
|
|
options = options || { };
|
|
|
|
var parsedAttributes = fabric.parseAttributes(element, fabric.Rect.ATTRIBUTE_NAMES);
|
|
|
|
parsedAttributes.left = parsedAttributes.left || 0;
|
|
parsedAttributes.top = parsedAttributes.top || 0;
|
|
|
|
return new fabric.Rect(extend((options ? fabric.util.object.clone(options) : { }), parsedAttributes));
|
|
};
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Returns {@link fabric.Rect} instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Rect
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {Object} instance of fabric.Rect
|
|
*/
|
|
fabric.Rect.fromObject = function(object) {
|
|
return new fabric.Rect(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
toFixed = fabric.util.toFixed;
|
|
|
|
if (fabric.Polyline) {
|
|
fabric.warn('fabric.Polyline is already defined');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Polyline class
|
|
* @class fabric.Polyline
|
|
* @extends fabric.Object
|
|
* @see {@link fabric.Polyline#initialize} for constructor definition
|
|
*/
|
|
fabric.Polyline = fabric.util.createClass(fabric.Object, /** @lends fabric.Polyline.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'polyline',
|
|
|
|
/**
|
|
* Points array
|
|
* @type Array
|
|
* @default
|
|
*/
|
|
points: null,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Array} points Array of points (where each point is an object with x and y)
|
|
* @param {Object} [options] Options object
|
|
* @param {Boolean} [skipOffset] Whether points offsetting should be skipped
|
|
* @return {fabric.Polyline} thisArg
|
|
* @example
|
|
* var poly = new fabric.Polyline([
|
|
* { x: 10, y: 10 },
|
|
* { x: 50, y: 30 },
|
|
* { x: 40, y: 70 },
|
|
* { x: 60, y: 50 },
|
|
* { x: 100, y: 150 },
|
|
* { x: 40, y: 100 }
|
|
* ], {
|
|
* stroke: 'red',
|
|
* left: 100,
|
|
* top: 100
|
|
* });
|
|
*/
|
|
initialize: function(points, options) {
|
|
options = options || { };
|
|
this.set('points', points);
|
|
this.callSuper('initialize', options);
|
|
this._calcDimensions();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_calcDimensions: function() {
|
|
return fabric.Polygon.prototype._calcDimensions.call(this);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_applyPointOffset: function() {
|
|
return fabric.Polygon.prototype._applyPointOffset.call(this);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
return fabric.Polygon.prototype.toObject.call(this, propertiesToInclude);
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns SVG representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var points = [],
|
|
markup = this._createBaseSVGMarkup();
|
|
|
|
for (var i = 0, len = this.points.length; i < len; i++) {
|
|
points.push(toFixed(this.points[i].x, 2), ',', toFixed(this.points[i].y, 2), ' ');
|
|
}
|
|
|
|
markup.push(
|
|
'<polyline ',
|
|
'points="', points.join(''),
|
|
'" style="', this.getSvgStyles(),
|
|
'" transform="', this.getSvgTransform(),
|
|
' ', this.getSvgTransformMatrix(),
|
|
'"/>\n'
|
|
);
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_render: function(ctx) {
|
|
var point;
|
|
ctx.beginPath();
|
|
|
|
if (this._applyPointOffset) {
|
|
if (!(this.group && this.group.type === 'path-group')) {
|
|
this._applyPointOffset();
|
|
}
|
|
this._applyPointOffset = null;
|
|
}
|
|
|
|
ctx.moveTo(this.points[0].x, this.points[0].y);
|
|
for (var i = 0, len = this.points.length; i < len; i++) {
|
|
point = this.points[i];
|
|
ctx.lineTo(point.x, point.y);
|
|
}
|
|
|
|
this._renderFill(ctx);
|
|
this._renderStroke(ctx);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderDashedStroke: function(ctx) {
|
|
var p1, p2;
|
|
|
|
ctx.beginPath();
|
|
for (var i = 0, len = this.points.length; i < len; i++) {
|
|
p1 = this.points[i];
|
|
p2 = this.points[i + 1] || p1;
|
|
fabric.util.drawDashedLine(ctx, p1.x, p1.y, p2.x, p2.y, this.strokeDashArray);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity of this instance
|
|
*/
|
|
complexity: function() {
|
|
return this.get('points').length;
|
|
}
|
|
});
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by {@link fabric.Polyline.fromElement})
|
|
* @static
|
|
* @memberOf fabric.Polyline
|
|
* @see: http://www.w3.org/TR/SVG/shapes.html#PolylineElement
|
|
*/
|
|
fabric.Polyline.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat();
|
|
|
|
/**
|
|
* Returns fabric.Polyline instance from an SVG element
|
|
* @static
|
|
* @memberOf fabric.Polyline
|
|
* @param {SVGElement} element Element to parse
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Polyline} Instance of fabric.Polyline
|
|
*/
|
|
fabric.Polyline.fromElement = function(element, options) {
|
|
if (!element) {
|
|
return null;
|
|
}
|
|
options || (options = { });
|
|
|
|
var points = fabric.parsePointsAttribute(element.getAttribute('points')),
|
|
parsedAttributes = fabric.parseAttributes(element, fabric.Polyline.ATTRIBUTE_NAMES);
|
|
|
|
if (points === null) {
|
|
return null;
|
|
}
|
|
|
|
return new fabric.Polyline(points, fabric.util.object.extend(parsedAttributes, options));
|
|
};
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Returns fabric.Polyline instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Polyline
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Polyline} Instance of fabric.Polyline
|
|
*/
|
|
fabric.Polyline.fromObject = function(object) {
|
|
var points = object.points;
|
|
return new fabric.Polyline(points, object, true);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend,
|
|
min = fabric.util.array.min,
|
|
max = fabric.util.array.max,
|
|
toFixed = fabric.util.toFixed;
|
|
|
|
if (fabric.Polygon) {
|
|
fabric.warn('fabric.Polygon is already defined');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Polygon class
|
|
* @class fabric.Polygon
|
|
* @extends fabric.Object
|
|
* @see {@link fabric.Polygon#initialize} for constructor definition
|
|
*/
|
|
fabric.Polygon = fabric.util.createClass(fabric.Object, /** @lends fabric.Polygon.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'polygon',
|
|
|
|
/**
|
|
* Points array
|
|
* @type Array
|
|
* @default
|
|
*/
|
|
points: null,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Array} points Array of points
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Polygon} thisArg
|
|
*/
|
|
initialize: function(points, options) {
|
|
options = options || { };
|
|
this.points = points;
|
|
this.callSuper('initialize', options);
|
|
this._calcDimensions();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_calcDimensions: function() {
|
|
|
|
var points = this.points,
|
|
minX = min(points, 'x'),
|
|
minY = min(points, 'y'),
|
|
maxX = max(points, 'x'),
|
|
maxY = max(points, 'y');
|
|
|
|
this.width = (maxX - minX) || 1;
|
|
this.height = (maxY - minY) || 1;
|
|
|
|
this.left = minX,
|
|
this.top = minY;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_applyPointOffset: function() {
|
|
// change points to offset polygon into a bounding box
|
|
// executed one time
|
|
this.points.forEach(function(p) {
|
|
p.x -= (this.left + this.width / 2);
|
|
p.y -= (this.top + this.height / 2);
|
|
}, this);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
return extend(this.callSuper('toObject', propertiesToInclude), {
|
|
points: this.points.concat()
|
|
});
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns svg representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var points = [],
|
|
markup = this._createBaseSVGMarkup();
|
|
|
|
for (var i = 0, len = this.points.length; i < len; i++) {
|
|
points.push(toFixed(this.points[i].x, 2), ',', toFixed(this.points[i].y, 2), ' ');
|
|
}
|
|
|
|
markup.push(
|
|
'<polygon ',
|
|
'points="', points.join(''),
|
|
'" style="', this.getSvgStyles(),
|
|
'" transform="', this.getSvgTransform(),
|
|
' ', this.getSvgTransformMatrix(),
|
|
'"/>\n'
|
|
);
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_render: function(ctx) {
|
|
var point;
|
|
ctx.beginPath();
|
|
|
|
if (this._applyPointOffset) {
|
|
if (!(this.group && this.group.type === 'path-group')) {
|
|
this._applyPointOffset();
|
|
}
|
|
this._applyPointOffset = null;
|
|
}
|
|
|
|
ctx.moveTo(this.points[0].x, this.points[0].y);
|
|
for (var i = 0, len = this.points.length; i < len; i++) {
|
|
point = this.points[i];
|
|
ctx.lineTo(point.x, point.y);
|
|
}
|
|
this._renderFill(ctx);
|
|
if (this.stroke || this.strokeDashArray) {
|
|
ctx.closePath();
|
|
this._renderStroke(ctx);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderDashedStroke: function(ctx) {
|
|
var p1, p2;
|
|
|
|
ctx.beginPath();
|
|
for (var i = 0, len = this.points.length; i < len; i++) {
|
|
p1 = this.points[i];
|
|
p2 = this.points[i + 1] || this.points[0];
|
|
fabric.util.drawDashedLine(ctx, p1.x, p1.y, p2.x, p2.y, this.strokeDashArray);
|
|
}
|
|
ctx.closePath();
|
|
},
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity of this instance
|
|
*/
|
|
complexity: function() {
|
|
return this.points.length;
|
|
}
|
|
});
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by `fabric.Polygon.fromElement`)
|
|
* @static
|
|
* @memberOf fabric.Polygon
|
|
* @see: http://www.w3.org/TR/SVG/shapes.html#PolygonElement
|
|
*/
|
|
fabric.Polygon.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat();
|
|
|
|
/**
|
|
* Returns {@link fabric.Polygon} instance from an SVG element
|
|
* @static
|
|
* @memberOf fabric.Polygon
|
|
* @param {SVGElement} element Element to parse
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Polygon} Instance of fabric.Polygon
|
|
*/
|
|
fabric.Polygon.fromElement = function(element, options) {
|
|
if (!element) {
|
|
return null;
|
|
}
|
|
|
|
options || (options = { });
|
|
|
|
var points = fabric.parsePointsAttribute(element.getAttribute('points')),
|
|
parsedAttributes = fabric.parseAttributes(element, fabric.Polygon.ATTRIBUTE_NAMES);
|
|
|
|
if (points === null) {
|
|
return null;
|
|
}
|
|
|
|
return new fabric.Polygon(points, extend(parsedAttributes, options));
|
|
};
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Returns fabric.Polygon instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Polygon
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Polygon} Instance of fabric.Polygon
|
|
*/
|
|
fabric.Polygon.fromObject = function(object) {
|
|
return new fabric.Polygon(object.points, object, true);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
min = fabric.util.array.min,
|
|
max = fabric.util.array.max,
|
|
extend = fabric.util.object.extend,
|
|
_toString = Object.prototype.toString,
|
|
drawArc = fabric.util.drawArc,
|
|
commandLengths = {
|
|
m: 2,
|
|
l: 2,
|
|
h: 1,
|
|
v: 1,
|
|
c: 6,
|
|
s: 4,
|
|
q: 4,
|
|
t: 2,
|
|
a: 7
|
|
},
|
|
repeatedCommands = {
|
|
m: 'l',
|
|
M: 'L'
|
|
};
|
|
|
|
if (fabric.Path) {
|
|
fabric.warn('fabric.Path is already defined');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function getX(item) {
|
|
if (item[0] === 'H') {
|
|
return item[1];
|
|
}
|
|
return item[item.length - 2];
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function getY(item) {
|
|
if (item[0] === 'V') {
|
|
return item[1];
|
|
}
|
|
return item[item.length - 1];
|
|
}
|
|
|
|
/**
|
|
* Path class
|
|
* @class fabric.Path
|
|
* @extends fabric.Object
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-1/#path_and_pathgroup}
|
|
* @see {@link fabric.Path#initialize} for constructor definition
|
|
*/
|
|
fabric.Path = fabric.util.createClass(fabric.Object, /** @lends fabric.Path.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'path',
|
|
|
|
/**
|
|
* Array of path points
|
|
* @type Array
|
|
* @default
|
|
*/
|
|
path: null,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Array|String} path Path data (sequence of coordinates and corresponding "command" tokens)
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Path} thisArg
|
|
*/
|
|
initialize: function(path, options) {
|
|
options = options || { };
|
|
|
|
this.setOptions(options);
|
|
|
|
if (!path) {
|
|
throw new Error('`path` argument is required');
|
|
}
|
|
|
|
var fromArray = _toString.call(path) === '[object Array]';
|
|
|
|
this.path = fromArray
|
|
? path
|
|
// one of commands (m,M,l,L,q,Q,c,C,etc.) followed by non-command characters (i.e. command values)
|
|
: path.match && path.match(/[mzlhvcsqta][^mzlhvcsqta]*/gi);
|
|
|
|
if (!this.path) {
|
|
return;
|
|
}
|
|
|
|
if (!fromArray) {
|
|
this.path = this._parsePath();
|
|
}
|
|
this._initializePath(options);
|
|
|
|
if (options.sourcePath) {
|
|
this.setSourcePath(options.sourcePath);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
_initializePath: function (options) {
|
|
var isWidthSet = 'width' in options && options.width != null,
|
|
isHeightSet = 'height' in options && options.width != null,
|
|
isLeftSet = 'left' in options,
|
|
isTopSet = 'top' in options,
|
|
origLeft = isLeftSet ? this.left : 0,
|
|
origTop = isTopSet ? this.top : 0;
|
|
|
|
if (!isWidthSet || !isHeightSet) {
|
|
extend(this, this._parseDimensions());
|
|
if (isWidthSet) {
|
|
this.width = options.width;
|
|
}
|
|
if (isHeightSet) {
|
|
this.height = options.height;
|
|
}
|
|
}
|
|
else { //Set center location relative to given height/width if not specified
|
|
if (!isTopSet) {
|
|
this.top = this.height / 2;
|
|
}
|
|
if (!isLeftSet) {
|
|
this.left = this.width / 2;
|
|
}
|
|
}
|
|
this.pathOffset = this.pathOffset ||
|
|
// Save top-left coords as offset
|
|
this._calculatePathOffset(origLeft, origTop);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Number} origLeft Original left position
|
|
* @param {Number} origTop Original top position
|
|
*/
|
|
_calculatePathOffset: function (origLeft, origTop) {
|
|
return {
|
|
x: this.left - origLeft - (this.width / 2),
|
|
y: this.top - origTop - (this.height / 2)
|
|
};
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx context to render path on
|
|
*/
|
|
_render: function(ctx, noTransform) {
|
|
var current, // current instruction
|
|
previous = null,
|
|
subpathStartX = 0,
|
|
subpathStartY = 0,
|
|
x = 0, // current x
|
|
y = 0, // current y
|
|
controlX = 0, // current control point x
|
|
controlY = 0, // current control point y
|
|
tempX,
|
|
tempY,
|
|
tempControlX,
|
|
tempControlY,
|
|
l = -((this.width / 2) + this.pathOffset.x),
|
|
t = -((this.height / 2) + this.pathOffset.y);
|
|
|
|
if (noTransform) {
|
|
l += this.width / 2;
|
|
t += this.height / 2;
|
|
}
|
|
|
|
for (var i = 0, len = this.path.length; i < len; ++i) {
|
|
|
|
current = this.path[i];
|
|
|
|
switch (current[0]) { // first letter
|
|
|
|
case 'l': // lineto, relative
|
|
x += current[1];
|
|
y += current[2];
|
|
ctx.lineTo(x + l, y + t);
|
|
break;
|
|
|
|
case 'L': // lineto, absolute
|
|
x = current[1];
|
|
y = current[2];
|
|
ctx.lineTo(x + l, y + t);
|
|
break;
|
|
|
|
case 'h': // horizontal lineto, relative
|
|
x += current[1];
|
|
ctx.lineTo(x + l, y + t);
|
|
break;
|
|
|
|
case 'H': // horizontal lineto, absolute
|
|
x = current[1];
|
|
ctx.lineTo(x + l, y + t);
|
|
break;
|
|
|
|
case 'v': // vertical lineto, relative
|
|
y += current[1];
|
|
ctx.lineTo(x + l, y + t);
|
|
break;
|
|
|
|
case 'V': // verical lineto, absolute
|
|
y = current[1];
|
|
ctx.lineTo(x + l, y + t);
|
|
break;
|
|
|
|
case 'm': // moveTo, relative
|
|
x += current[1];
|
|
y += current[2];
|
|
subpathStartX = x;
|
|
subpathStartY = y;
|
|
ctx.moveTo(x + l, y + t);
|
|
break;
|
|
|
|
case 'M': // moveTo, absolute
|
|
x = current[1];
|
|
y = current[2];
|
|
subpathStartX = x;
|
|
subpathStartY = y;
|
|
ctx.moveTo(x + l, y + t);
|
|
break;
|
|
|
|
case 'c': // bezierCurveTo, relative
|
|
tempX = x + current[5];
|
|
tempY = y + current[6];
|
|
controlX = x + current[3];
|
|
controlY = y + current[4];
|
|
ctx.bezierCurveTo(
|
|
x + current[1] + l, // x1
|
|
y + current[2] + t, // y1
|
|
controlX + l, // x2
|
|
controlY + t, // y2
|
|
tempX + l,
|
|
tempY + t
|
|
);
|
|
x = tempX;
|
|
y = tempY;
|
|
break;
|
|
|
|
case 'C': // bezierCurveTo, absolute
|
|
x = current[5];
|
|
y = current[6];
|
|
controlX = current[3];
|
|
controlY = current[4];
|
|
ctx.bezierCurveTo(
|
|
current[1] + l,
|
|
current[2] + t,
|
|
controlX + l,
|
|
controlY + t,
|
|
x + l,
|
|
y + t
|
|
);
|
|
break;
|
|
|
|
case 's': // shorthand cubic bezierCurveTo, relative
|
|
|
|
// transform to absolute x,y
|
|
tempX = x + current[3];
|
|
tempY = y + current[4];
|
|
|
|
// calculate reflection of previous control points
|
|
controlX = controlX ? (2 * x - controlX) : x;
|
|
controlY = controlY ? (2 * y - controlY) : y;
|
|
|
|
ctx.bezierCurveTo(
|
|
controlX + l,
|
|
controlY + t,
|
|
x + current[1] + l,
|
|
y + current[2] + t,
|
|
tempX + l,
|
|
tempY + t
|
|
);
|
|
// set control point to 2nd one of this command
|
|
// "... the first control point is assumed to be
|
|
// the reflection of the second control point on
|
|
// the previous command relative to the current point."
|
|
controlX = x + current[1];
|
|
controlY = y + current[2];
|
|
|
|
x = tempX;
|
|
y = tempY;
|
|
break;
|
|
|
|
case 'S': // shorthand cubic bezierCurveTo, absolute
|
|
tempX = current[3];
|
|
tempY = current[4];
|
|
// calculate reflection of previous control points
|
|
controlX = 2 * x - controlX;
|
|
controlY = 2 * y - controlY;
|
|
ctx.bezierCurveTo(
|
|
controlX + l,
|
|
controlY + t,
|
|
current[1] + l,
|
|
current[2] + t,
|
|
tempX + l,
|
|
tempY + t
|
|
);
|
|
x = tempX;
|
|
y = tempY;
|
|
|
|
// set control point to 2nd one of this command
|
|
// "... the first control point is assumed to be
|
|
// the reflection of the second control point on
|
|
// the previous command relative to the current point."
|
|
controlX = current[1];
|
|
controlY = current[2];
|
|
|
|
break;
|
|
|
|
case 'q': // quadraticCurveTo, relative
|
|
// transform to absolute x,y
|
|
tempX = x + current[3];
|
|
tempY = y + current[4];
|
|
|
|
controlX = x + current[1];
|
|
controlY = y + current[2];
|
|
|
|
ctx.quadraticCurveTo(
|
|
controlX + l,
|
|
controlY + t,
|
|
tempX + l,
|
|
tempY + t
|
|
);
|
|
x = tempX;
|
|
y = tempY;
|
|
break;
|
|
|
|
case 'Q': // quadraticCurveTo, absolute
|
|
tempX = current[3];
|
|
tempY = current[4];
|
|
|
|
ctx.quadraticCurveTo(
|
|
current[1] + l,
|
|
current[2] + t,
|
|
tempX + l,
|
|
tempY + t
|
|
);
|
|
x = tempX;
|
|
y = tempY;
|
|
controlX = current[1];
|
|
controlY = current[2];
|
|
break;
|
|
|
|
case 't': // shorthand quadraticCurveTo, relative
|
|
|
|
// transform to absolute x,y
|
|
tempX = x + current[1];
|
|
tempY = y + current[2];
|
|
|
|
if (previous[0].match(/[QqTt]/) === null) {
|
|
// If there is no previous command or if the previous command was not a Q, q, T or t,
|
|
// assume the control point is coincident with the current point
|
|
controlX = x;
|
|
controlY = y;
|
|
}
|
|
else if (previous[0] === 't') {
|
|
// calculate reflection of previous control points for t
|
|
controlX = 2 * x - tempControlX;
|
|
controlY = 2 * y - tempControlY;
|
|
}
|
|
else if (previous[0] === 'q') {
|
|
// calculate reflection of previous control points for q
|
|
controlX = 2 * x - controlX;
|
|
controlY = 2 * y - controlY;
|
|
}
|
|
|
|
tempControlX = controlX;
|
|
tempControlY = controlY;
|
|
|
|
ctx.quadraticCurveTo(
|
|
controlX + l,
|
|
controlY + t,
|
|
tempX + l,
|
|
tempY + t
|
|
);
|
|
x = tempX;
|
|
y = tempY;
|
|
controlX = x + current[1];
|
|
controlY = y + current[2];
|
|
break;
|
|
|
|
case 'T':
|
|
tempX = current[1];
|
|
tempY = current[2];
|
|
|
|
// calculate reflection of previous control points
|
|
controlX = 2 * x - controlX;
|
|
controlY = 2 * y - controlY;
|
|
ctx.quadraticCurveTo(
|
|
controlX + l,
|
|
controlY + t,
|
|
tempX + l,
|
|
tempY + t
|
|
);
|
|
x = tempX;
|
|
y = tempY;
|
|
break;
|
|
|
|
case 'a':
|
|
// TODO: optimize this
|
|
drawArc(ctx, x + l, y + t, [
|
|
current[1],
|
|
current[2],
|
|
current[3],
|
|
current[4],
|
|
current[5],
|
|
current[6] + x + l,
|
|
current[7] + y + t
|
|
]);
|
|
x += current[6];
|
|
y += current[7];
|
|
break;
|
|
|
|
case 'A':
|
|
// TODO: optimize this
|
|
drawArc(ctx, x + l, y + t, [
|
|
current[1],
|
|
current[2],
|
|
current[3],
|
|
current[4],
|
|
current[5],
|
|
current[6] + l,
|
|
current[7] + t
|
|
]);
|
|
x = current[6];
|
|
y = current[7];
|
|
break;
|
|
|
|
case 'z':
|
|
case 'Z':
|
|
x = subpathStartX;
|
|
y = subpathStartY;
|
|
ctx.closePath();
|
|
break;
|
|
}
|
|
previous = current;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Renders path on a specified context
|
|
* @param {CanvasRenderingContext2D} ctx context to render path on
|
|
* @param {Boolean} [noTransform] When true, context is not transformed
|
|
*/
|
|
render: function(ctx, noTransform) {
|
|
// do not render if object is not visible
|
|
if (!this.visible) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
if (noTransform) {
|
|
ctx.translate(-this.width/2, -this.height/2);
|
|
}
|
|
var m = this.transformMatrix;
|
|
|
|
if (m) {
|
|
ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);
|
|
}
|
|
if (!noTransform) {
|
|
this.transform(ctx);
|
|
}
|
|
this._setStrokeStyles(ctx);
|
|
this._setFillStyles(ctx);
|
|
this._setShadow(ctx);
|
|
this.clipTo && fabric.util.clipContext(this, ctx);
|
|
ctx.beginPath();
|
|
ctx.globalAlpha = this.group ? (ctx.globalAlpha * this.opacity) : this.opacity;
|
|
this._render(ctx, noTransform);
|
|
this._renderFill(ctx);
|
|
this._renderStroke(ctx);
|
|
this.clipTo && ctx.restore();
|
|
this._removeShadow(ctx);
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Returns string representation of an instance
|
|
* @return {String} string representation of an instance
|
|
*/
|
|
toString: function() {
|
|
return '#<fabric.Path (' + this.complexity() +
|
|
'): { "top": ' + this.top + ', "left": ' + this.left + ' }>';
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
var o = extend(this.callSuper('toObject', propertiesToInclude), {
|
|
path: this.path.map(function(item) { return item.slice() }),
|
|
pathOffset: this.pathOffset
|
|
});
|
|
if (this.sourcePath) {
|
|
o.sourcePath = this.sourcePath;
|
|
}
|
|
if (this.transformMatrix) {
|
|
o.transformMatrix = this.transformMatrix;
|
|
}
|
|
return o;
|
|
},
|
|
|
|
/**
|
|
* Returns dataless object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toDatalessObject: function(propertiesToInclude) {
|
|
var o = this.toObject(propertiesToInclude);
|
|
if (this.sourcePath) {
|
|
o.path = this.sourcePath;
|
|
}
|
|
delete o.sourcePath;
|
|
return o;
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns svg representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var chunks = [],
|
|
markup = this._createBaseSVGMarkup();
|
|
|
|
for (var i = 0, len = this.path.length; i < len; i++) {
|
|
chunks.push(this.path[i].join(' '));
|
|
}
|
|
var path = chunks.join(' ');
|
|
|
|
markup.push(
|
|
//jscs:disable validateIndentation
|
|
'<path ',
|
|
'd="', path,
|
|
'" style="', this.getSvgStyles(),
|
|
'" transform="', this.getSvgTransform(),
|
|
this.getSvgTransformMatrix(), '" stroke-linecap="round" ',
|
|
'/>\n'
|
|
//jscs:enable validateIndentation
|
|
);
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns number representation of an instance complexity
|
|
* @return {Number} complexity of this instance
|
|
*/
|
|
complexity: function() {
|
|
return this.path.length;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_parsePath: function() {
|
|
var result = [ ],
|
|
coords = [ ],
|
|
currentPath,
|
|
parsed,
|
|
re = /([-+]?((\d+\.\d+)|((\d+)|(\.\d+)))(?:e[-+]?\d+)?)/ig,
|
|
match,
|
|
coordsStr;
|
|
|
|
for (var i = 0, coordsParsed, len = this.path.length; i < len; i++) {
|
|
currentPath = this.path[i];
|
|
|
|
coordsStr = currentPath.slice(1).trim();
|
|
coords.length = 0;
|
|
|
|
while ((match = re.exec(coordsStr))) {
|
|
coords.push(match[0]);
|
|
}
|
|
|
|
coordsParsed = [ currentPath.charAt(0) ];
|
|
|
|
for (var j = 0, jlen = coords.length; j < jlen; j++) {
|
|
parsed = parseFloat(coords[j]);
|
|
if (!isNaN(parsed)) {
|
|
coordsParsed.push(parsed);
|
|
}
|
|
}
|
|
|
|
var command = coordsParsed[0],
|
|
commandLength = commandLengths[command.toLowerCase()],
|
|
repeatedCommand = repeatedCommands[command] || command;
|
|
|
|
if (coordsParsed.length - 1 > commandLength) {
|
|
for (var k = 1, klen = coordsParsed.length; k < klen; k += commandLength) {
|
|
result.push([ command ].concat(coordsParsed.slice(k, k + commandLength)));
|
|
command = repeatedCommand;
|
|
}
|
|
}
|
|
else {
|
|
result.push(coordsParsed);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_parseDimensions: function() {
|
|
var aX = [],
|
|
aY = [],
|
|
previous = { };
|
|
|
|
this.path.forEach(function(item, i) {
|
|
this._getCoordsFromCommand(item, i, aX, aY, previous);
|
|
}, this);
|
|
|
|
var minX = min(aX),
|
|
minY = min(aY),
|
|
maxX = max(aX),
|
|
maxY = max(aY),
|
|
deltaX = maxX - minX,
|
|
deltaY = maxY - minY,
|
|
|
|
o = {
|
|
left: this.left + (minX + deltaX / 2),
|
|
top: this.top + (minY + deltaY / 2),
|
|
width: deltaX,
|
|
height: deltaY
|
|
};
|
|
|
|
return o;
|
|
},
|
|
|
|
_getCoordsFromCommand: function(item, i, aX, aY, previous) {
|
|
var isLowerCase = false;
|
|
|
|
if (item[0] !== 'H') {
|
|
previous.x = (i === 0) ? getX(item) : getX(this.path[i - 1]);
|
|
}
|
|
if (item[0] !== 'V') {
|
|
previous.y = (i === 0) ? getY(item) : getY(this.path[i - 1]);
|
|
}
|
|
|
|
// lowercased letter denotes relative position;
|
|
// transform to absolute
|
|
if (item[0] === item[0].toLowerCase()) {
|
|
isLowerCase = true;
|
|
}
|
|
|
|
var xy = this._getXY(item, isLowerCase, previous),
|
|
val;
|
|
|
|
val = parseInt(xy.x, 10);
|
|
if (!isNaN(val)) {
|
|
aX.push(val);
|
|
}
|
|
|
|
val = parseInt(xy.y, 10);
|
|
if (!isNaN(val)) {
|
|
aY.push(val);
|
|
}
|
|
},
|
|
|
|
_getXY: function(item, isLowerCase, previous) {
|
|
|
|
// last 2 items in an array of coordinates are the actualy x/y (except H/V), collect them
|
|
// TODO (kangax): support relative h/v commands
|
|
|
|
var x = isLowerCase
|
|
? previous.x + getX(item)
|
|
: item[0] === 'V'
|
|
? previous.x
|
|
: getX(item),
|
|
|
|
y = isLowerCase
|
|
? previous.y + getY(item)
|
|
: item[0] === 'H'
|
|
? previous.y
|
|
: getY(item);
|
|
|
|
return { x: x, y: y };
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Creates an instance of fabric.Path from an object
|
|
* @static
|
|
* @memberOf fabric.Path
|
|
* @param {Object} object
|
|
* @param {Function} callback Callback to invoke when an fabric.Path instance is created
|
|
*/
|
|
fabric.Path.fromObject = function(object, callback) {
|
|
if (typeof object.path === 'string') {
|
|
fabric.loadSVGFromURL(object.path, function (elements) {
|
|
var path = elements[0],
|
|
pathUrl = object.path;
|
|
|
|
delete object.path;
|
|
|
|
fabric.util.object.extend(path, object);
|
|
path.setSourcePath(pathUrl);
|
|
|
|
callback(path);
|
|
});
|
|
}
|
|
else {
|
|
callback(new fabric.Path(object.path, object));
|
|
}
|
|
};
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by `fabric.Path.fromElement`)
|
|
* @static
|
|
* @memberOf fabric.Path
|
|
* @see http://www.w3.org/TR/SVG/paths.html#PathElement
|
|
*/
|
|
fabric.Path.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(['d']);
|
|
|
|
/**
|
|
* Creates an instance of fabric.Path from an SVG <path> element
|
|
* @static
|
|
* @memberOf fabric.Path
|
|
* @param {SVGElement} element to parse
|
|
* @param {Function} callback Callback to invoke when an fabric.Path instance is created
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
fabric.Path.fromElement = function(element, callback, options) {
|
|
var parsedAttributes = fabric.parseAttributes(element, fabric.Path.ATTRIBUTE_NAMES);
|
|
callback && callback(new fabric.Path(parsedAttributes.d, extend(parsedAttributes, options)));
|
|
};
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Indicates that instances of this type are async
|
|
* @static
|
|
* @memberOf fabric.Path
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
fabric.Path.async = true;
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend,
|
|
invoke = fabric.util.array.invoke,
|
|
parentToObject = fabric.Object.prototype.toObject;
|
|
|
|
if (fabric.PathGroup) {
|
|
fabric.warn('fabric.PathGroup is already defined');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Path group class
|
|
* @class fabric.PathGroup
|
|
* @extends fabric.Path
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-1/#path_and_pathgroup}
|
|
* @see {@link fabric.PathGroup#initialize} for constructor definition
|
|
*/
|
|
fabric.PathGroup = fabric.util.createClass(fabric.Path, /** @lends fabric.PathGroup.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'path-group',
|
|
|
|
/**
|
|
* Fill value
|
|
* @type String
|
|
* @default
|
|
*/
|
|
fill: '',
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Array} paths
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.PathGroup} thisArg
|
|
*/
|
|
initialize: function(paths, options) {
|
|
|
|
options = options || { };
|
|
this.paths = paths || [ ];
|
|
|
|
for (var i = this.paths.length; i--; ) {
|
|
this.paths[i].group = this;
|
|
}
|
|
|
|
this.setOptions(options);
|
|
|
|
if (options.widthAttr) {
|
|
this.scaleX = options.widthAttr / options.width;
|
|
}
|
|
if (options.heightAttr) {
|
|
this.scaleY = options.heightAttr / options.height;
|
|
}
|
|
|
|
this.setCoords();
|
|
|
|
if (options.sourcePath) {
|
|
this.setSourcePath(options.sourcePath);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Renders this group on a specified context
|
|
* @param {CanvasRenderingContext2D} ctx Context to render this instance on
|
|
*/
|
|
render: function(ctx) {
|
|
// do not render if object is not visible
|
|
if (!this.visible) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
|
|
var m = this.transformMatrix;
|
|
|
|
if (m) {
|
|
ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);
|
|
}
|
|
this.transform(ctx);
|
|
|
|
this._setShadow(ctx);
|
|
this.clipTo && fabric.util.clipContext(this, ctx);
|
|
for (var i = 0, l = this.paths.length; i < l; ++i) {
|
|
this.paths[i].render(ctx, true);
|
|
}
|
|
this.clipTo && ctx.restore();
|
|
this._removeShadow(ctx);
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Sets certain property to a certain value
|
|
* @param {String} prop
|
|
* @param {Any} value
|
|
* @return {fabric.PathGroup} thisArg
|
|
*/
|
|
_set: function(prop, value) {
|
|
|
|
if (prop === 'fill' && value && this.isSameColor()) {
|
|
var i = this.paths.length;
|
|
while (i--) {
|
|
this.paths[i]._set(prop, value);
|
|
}
|
|
}
|
|
|
|
return this.callSuper('_set', prop, value);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of this path group
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
var o = extend(parentToObject.call(this, propertiesToInclude), {
|
|
paths: invoke(this.getObjects(), 'toObject', propertiesToInclude)
|
|
});
|
|
if (this.sourcePath) {
|
|
o.sourcePath = this.sourcePath;
|
|
}
|
|
return o;
|
|
},
|
|
|
|
/**
|
|
* Returns dataless object representation of this path group
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} dataless object representation of an instance
|
|
*/
|
|
toDatalessObject: function(propertiesToInclude) {
|
|
var o = this.toObject(propertiesToInclude);
|
|
if (this.sourcePath) {
|
|
o.paths = this.sourcePath;
|
|
}
|
|
return o;
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns svg representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var objects = this.getObjects(),
|
|
translatePart = 'translate(' + this.left + ' ' + this.top + ')',
|
|
markup = [
|
|
//jscs:disable validateIndentation
|
|
'<g ',
|
|
'style="', this.getSvgStyles(), '" ',
|
|
'transform="', translatePart, this.getSvgTransform(), '" ',
|
|
'>\n'
|
|
//jscs:enable validateIndentation
|
|
];
|
|
|
|
for (var i = 0, len = objects.length; i < len; i++) {
|
|
markup.push(objects[i].toSVG(reviver));
|
|
}
|
|
markup.push('</g>\n');
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns a string representation of this path group
|
|
* @return {String} string representation of an object
|
|
*/
|
|
toString: function() {
|
|
return '#<fabric.PathGroup (' + this.complexity() +
|
|
'): { top: ' + this.top + ', left: ' + this.left + ' }>';
|
|
},
|
|
|
|
/**
|
|
* Returns true if all paths in this group are of same color
|
|
* @return {Boolean} true if all paths are of the same color (`fill`)
|
|
*/
|
|
isSameColor: function() {
|
|
var firstPathFill = (this.getObjects()[0].get('fill') || '').toLowerCase();
|
|
return this.getObjects().every(function(path) {
|
|
return (path.get('fill') || '').toLowerCase() === firstPathFill;
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Returns number representation of object's complexity
|
|
* @return {Number} complexity
|
|
*/
|
|
complexity: function() {
|
|
return this.paths.reduce(function(total, path) {
|
|
return total + ((path && path.complexity) ? path.complexity() : 0);
|
|
}, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns all paths in this path group
|
|
* @return {Array} array of path objects included in this path group
|
|
*/
|
|
getObjects: function() {
|
|
return this.paths;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Creates fabric.PathGroup instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.PathGroup
|
|
* @param {Object} object Object to create an instance from
|
|
* @param {Function} callback Callback to invoke when an fabric.PathGroup instance is created
|
|
*/
|
|
fabric.PathGroup.fromObject = function(object, callback) {
|
|
if (typeof object.paths === 'string') {
|
|
fabric.loadSVGFromURL(object.paths, function (elements) {
|
|
|
|
var pathUrl = object.paths;
|
|
delete object.paths;
|
|
|
|
var pathGroup = fabric.util.groupSVGElements(elements, object, pathUrl);
|
|
|
|
callback(pathGroup);
|
|
});
|
|
}
|
|
else {
|
|
fabric.util.enlivenObjects(object.paths, function(enlivenedObjects) {
|
|
delete object.paths;
|
|
callback(new fabric.PathGroup(enlivenedObjects, object));
|
|
});
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Indicates that instances of this type are async
|
|
* @static
|
|
* @memberOf fabric.PathGroup
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
fabric.PathGroup.async = true;
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global){
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend,
|
|
min = fabric.util.array.min,
|
|
max = fabric.util.array.max,
|
|
invoke = fabric.util.array.invoke;
|
|
|
|
if (fabric.Group) {
|
|
return;
|
|
}
|
|
|
|
// lock-related properties, for use in fabric.Group#get
|
|
// to enable locking behavior on group
|
|
// when one of its objects has lock-related properties set
|
|
var _lockProperties = {
|
|
lockMovementX: true,
|
|
lockMovementY: true,
|
|
lockRotation: true,
|
|
lockScalingX: true,
|
|
lockScalingY: true,
|
|
lockUniScaling: true
|
|
};
|
|
|
|
/**
|
|
* Group class
|
|
* @class fabric.Group
|
|
* @extends fabric.Object
|
|
* @mixes fabric.Collection
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-3/#groups}
|
|
* @see {@link fabric.Group#initialize} for constructor definition
|
|
*/
|
|
fabric.Group = fabric.util.createClass(fabric.Object, fabric.Collection, /** @lends fabric.Group.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'group',
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {Object} objects Group objects
|
|
* @param {Object} [options] Options object
|
|
* @return {Object} thisArg
|
|
*/
|
|
initialize: function(objects, options) {
|
|
options = options || { };
|
|
|
|
this._objects = objects || [];
|
|
for (var i = this._objects.length; i--; ) {
|
|
this._objects[i].group = this;
|
|
}
|
|
|
|
this.originalState = { };
|
|
this.callSuper('initialize');
|
|
|
|
this._calcBounds();
|
|
this._updateObjectsCoords();
|
|
|
|
if (options) {
|
|
extend(this, options);
|
|
}
|
|
this._setOpacityIfSame();
|
|
|
|
this.setCoords();
|
|
this.saveCoords();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_updateObjectsCoords: function() {
|
|
this.forEachObject(this._updateObjectCoords, this);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_updateObjectCoords: function(object) {
|
|
var objectLeft = object.getLeft(),
|
|
objectTop = object.getTop();
|
|
|
|
object.set({
|
|
originalLeft: objectLeft,
|
|
originalTop: objectTop,
|
|
left: objectLeft - this.left,
|
|
top: objectTop - this.top
|
|
});
|
|
|
|
object.setCoords();
|
|
|
|
// do not display corners of objects enclosed in a group
|
|
object.__origHasControls = object.hasControls;
|
|
object.hasControls = false;
|
|
},
|
|
|
|
/**
|
|
* Returns string represenation of a group
|
|
* @return {String}
|
|
*/
|
|
toString: function() {
|
|
return '#<fabric.Group: (' + this.complexity() + ')>';
|
|
},
|
|
|
|
/**
|
|
* Adds an object to a group; Then recalculates group's dimension, position.
|
|
* @param {Object} object
|
|
* @return {fabric.Group} thisArg
|
|
* @chainable
|
|
*/
|
|
addWithUpdate: function(object) {
|
|
this._restoreObjectsState();
|
|
if (object) {
|
|
this._objects.push(object);
|
|
object.group = this;
|
|
}
|
|
// since _restoreObjectsState set objects inactive
|
|
this.forEachObject(this._setObjectActive, this);
|
|
this._calcBounds();
|
|
this._updateObjectsCoords();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setObjectActive: function(object) {
|
|
object.set('active', true);
|
|
object.group = this;
|
|
},
|
|
|
|
/**
|
|
* Removes an object from a group; Then recalculates group's dimension, position.
|
|
* @param {Object} object
|
|
* @return {fabric.Group} thisArg
|
|
* @chainable
|
|
*/
|
|
removeWithUpdate: function(object) {
|
|
this._moveFlippedObject(object);
|
|
this._restoreObjectsState();
|
|
|
|
// since _restoreObjectsState set objects inactive
|
|
this.forEachObject(this._setObjectActive, this);
|
|
|
|
this.remove(object);
|
|
this._calcBounds();
|
|
this._updateObjectsCoords();
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_onObjectAdded: function(object) {
|
|
object.group = this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_onObjectRemoved: function(object) {
|
|
delete object.group;
|
|
object.set('active', false);
|
|
},
|
|
|
|
/**
|
|
* Properties that are delegated to group objects when reading/writing
|
|
* @param {Object} delegatedProperties
|
|
*/
|
|
delegatedProperties: {
|
|
fill: true,
|
|
opacity: true,
|
|
fontFamily: true,
|
|
fontWeight: true,
|
|
fontSize: true,
|
|
fontStyle: true,
|
|
lineHeight: true,
|
|
textDecoration: true,
|
|
textAlign: true,
|
|
backgroundColor: true
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_set: function(key, value) {
|
|
if (key in this.delegatedProperties) {
|
|
var i = this._objects.length;
|
|
this[key] = value;
|
|
while (i--) {
|
|
this._objects[i].set(key, value);
|
|
}
|
|
}
|
|
else {
|
|
this[key] = value;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
return extend(this.callSuper('toObject', propertiesToInclude), {
|
|
objects: invoke(this._objects, 'toObject', propertiesToInclude)
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Renders instance on a given context
|
|
* @param {CanvasRenderingContext2D} ctx context to render instance on
|
|
*/
|
|
render: function(ctx) {
|
|
// do not render if object is not visible
|
|
if (!this.visible) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
this.clipTo && fabric.util.clipContext(this, ctx);
|
|
|
|
// the array is now sorted in order of highest first, so start from end
|
|
for (var i = 0, len = this._objects.length; i < len; i++) {
|
|
this._renderObject(this._objects[i], ctx);
|
|
}
|
|
|
|
this.clipTo && ctx.restore();
|
|
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Renders controls and borders for the object
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Boolean} [noTransform] When true, context is not transformed
|
|
*/
|
|
_renderControls: function(ctx, noTransform) {
|
|
this.callSuper('_renderControls', ctx, noTransform);
|
|
for (var i = 0, len = this._objects.length; i < len; i++) {
|
|
this._objects[i]._renderControls(ctx);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_renderObject: function(object, ctx) {
|
|
var originalHasRotatingPoint = object.hasRotatingPoint;
|
|
|
|
// do not render if object is not visible
|
|
if (!object.visible) {
|
|
return;
|
|
}
|
|
|
|
object.hasRotatingPoint = false;
|
|
|
|
object.render(ctx);
|
|
|
|
object.hasRotatingPoint = originalHasRotatingPoint;
|
|
},
|
|
|
|
/**
|
|
* Retores original state of each of group objects (original state is that which was before group was created).
|
|
* @private
|
|
* @return {fabric.Group} thisArg
|
|
* @chainable
|
|
*/
|
|
_restoreObjectsState: function() {
|
|
this._objects.forEach(this._restoreObjectState, this);
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Moves a flipped object to the position where it's displayed
|
|
* @private
|
|
* @param {fabric.Object} object
|
|
* @return {fabric.Group} thisArg
|
|
*/
|
|
_moveFlippedObject: function(object) {
|
|
var oldOriginX = object.get('originX'),
|
|
oldOriginY = object.get('originY'),
|
|
center = object.getCenterPoint();
|
|
|
|
object.set({
|
|
originX: 'center',
|
|
originY: 'center',
|
|
left: center.x,
|
|
top: center.y
|
|
});
|
|
|
|
this._toggleFlipping(object);
|
|
|
|
var newOrigin = object.getPointByOrigin(oldOriginX, oldOriginY);
|
|
|
|
object.set({
|
|
originX: oldOriginX,
|
|
originY: oldOriginY,
|
|
left: newOrigin.x,
|
|
top: newOrigin.y
|
|
});
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_toggleFlipping: function(object) {
|
|
if (this.flipX) {
|
|
object.toggle('flipX');
|
|
object.set('left', -object.get('left'));
|
|
object.setAngle(-object.getAngle());
|
|
}
|
|
if (this.flipY) {
|
|
object.toggle('flipY');
|
|
object.set('top', -object.get('top'));
|
|
object.setAngle(-object.getAngle());
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Restores original state of a specified object in group
|
|
* @private
|
|
* @param {fabric.Object} object
|
|
* @return {fabric.Group} thisArg
|
|
*/
|
|
_restoreObjectState: function(object) {
|
|
this._setObjectPosition(object);
|
|
|
|
object.setCoords();
|
|
object.hasControls = object.__origHasControls;
|
|
delete object.__origHasControls;
|
|
object.set('active', false);
|
|
object.setCoords();
|
|
delete object.group;
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setObjectPosition: function(object) {
|
|
var groupLeft = this.getLeft(),
|
|
groupTop = this.getTop(),
|
|
rotated = this._getRotatedLeftTop(object);
|
|
|
|
object.set({
|
|
angle: object.getAngle() + this.getAngle(),
|
|
left: groupLeft + rotated.left,
|
|
top: groupTop + rotated.top,
|
|
scaleX: object.get('scaleX') * this.get('scaleX'),
|
|
scaleY: object.get('scaleY') * this.get('scaleY')
|
|
});
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getRotatedLeftTop: function(object) {
|
|
var groupAngle = this.getAngle() * (Math.PI / 180);
|
|
return {
|
|
left: (-Math.sin(groupAngle) * object.getTop() * this.get('scaleY') +
|
|
Math.cos(groupAngle) * object.getLeft() * this.get('scaleX')),
|
|
|
|
top: (Math.cos(groupAngle) * object.getTop() * this.get('scaleY') +
|
|
Math.sin(groupAngle) * object.getLeft() * this.get('scaleX'))
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Destroys a group (restoring state of its objects)
|
|
* @return {fabric.Group} thisArg
|
|
* @chainable
|
|
*/
|
|
destroy: function() {
|
|
this._objects.forEach(this._moveFlippedObject, this);
|
|
return this._restoreObjectsState();
|
|
},
|
|
|
|
/**
|
|
* Saves coordinates of this instance (to be used together with `hasMoved`)
|
|
* @saveCoords
|
|
* @return {fabric.Group} thisArg
|
|
* @chainable
|
|
*/
|
|
saveCoords: function() {
|
|
this._originalLeft = this.get('left');
|
|
this._originalTop = this.get('top');
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Checks whether this group was moved (since `saveCoords` was called last)
|
|
* @return {Boolean} true if an object was moved (since fabric.Group#saveCoords was called)
|
|
*/
|
|
hasMoved: function() {
|
|
return this._originalLeft !== this.get('left') ||
|
|
this._originalTop !== this.get('top');
|
|
},
|
|
|
|
/**
|
|
* Sets coordinates of all group objects
|
|
* @return {fabric.Group} thisArg
|
|
* @chainable
|
|
*/
|
|
setObjectsCoords: function() {
|
|
this.forEachObject(function(object) {
|
|
object.setCoords();
|
|
});
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setOpacityIfSame: function() {
|
|
var objects = this.getObjects(),
|
|
firstValue = objects[0] ? objects[0].get('opacity') : 1,
|
|
isSameOpacity = objects.every(function(o) {
|
|
return o.get('opacity') === firstValue;
|
|
});
|
|
|
|
if (isSameOpacity) {
|
|
this.opacity = firstValue;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_calcBounds: function(onlyWidthHeight) {
|
|
var aX = [],
|
|
aY = [],
|
|
o;
|
|
|
|
for (var i = 0, len = this._objects.length; i < len; ++i) {
|
|
o = this._objects[i];
|
|
o.setCoords();
|
|
for (var prop in o.oCoords) {
|
|
aX.push(o.oCoords[prop].x);
|
|
aY.push(o.oCoords[prop].y);
|
|
}
|
|
}
|
|
|
|
this.set(this._getBounds(aX, aY, onlyWidthHeight));
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getBounds: function(aX, aY, onlyWidthHeight) {
|
|
var ivt = fabric.util.invertTransform(this.getViewportTransform()),
|
|
minXY = fabric.util.transformPoint(new fabric.Point(min(aX), min(aY)), ivt),
|
|
maxXY = fabric.util.transformPoint(new fabric.Point(max(aX), max(aY)), ivt),
|
|
obj = {
|
|
width: (maxXY.x - minXY.x) || 0,
|
|
height: (maxXY.y - minXY.y) || 0
|
|
};
|
|
|
|
if (!onlyWidthHeight) {
|
|
obj.left = (minXY.x + maxXY.x) / 2 || 0;
|
|
obj.top = (minXY.y + maxXY.y) / 2 || 0;
|
|
}
|
|
return obj;
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns svg representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var markup = [
|
|
//jscs:disable validateIndentation
|
|
'<g ',
|
|
'transform="', this.getSvgTransform(),
|
|
'">\n'
|
|
//jscs:enable validateIndentation
|
|
];
|
|
|
|
for (var i = 0, len = this._objects.length; i < len; i++) {
|
|
markup.push(this._objects[i].toSVG(reviver));
|
|
}
|
|
|
|
markup.push('</g>\n');
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns requested property
|
|
* @param {String} prop Property to get
|
|
* @return {Any}
|
|
*/
|
|
get: function(prop) {
|
|
if (prop in _lockProperties) {
|
|
if (this[prop]) {
|
|
return this[prop];
|
|
}
|
|
else {
|
|
for (var i = 0, len = this._objects.length; i < len; i++) {
|
|
if (this._objects[i][prop]) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
if (prop in this.delegatedProperties) {
|
|
return this._objects[0] && this._objects[0].get(prop);
|
|
}
|
|
return this[prop];
|
|
}
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns {@link fabric.Group} instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Group
|
|
* @param {Object} object Object to create a group from
|
|
* @param {Function} [callback] Callback to invoke when an group instance is created
|
|
* @return {fabric.Group} An instance of fabric.Group
|
|
*/
|
|
fabric.Group.fromObject = function(object, callback) {
|
|
fabric.util.enlivenObjects(object.objects, function(enlivenedObjects) {
|
|
delete object.objects;
|
|
callback && callback(new fabric.Group(enlivenedObjects, object));
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Indicates that instances of this type are async
|
|
* @static
|
|
* @memberOf fabric.Group
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
fabric.Group.async = true;
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var extend = fabric.util.object.extend;
|
|
|
|
if (!global.fabric) {
|
|
global.fabric = { };
|
|
}
|
|
|
|
if (global.fabric.Image) {
|
|
fabric.warn('fabric.Image is already defined.');
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Image class
|
|
* @class fabric.Image
|
|
* @extends fabric.Object
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-1/#images}
|
|
* @see {@link fabric.Image#initialize} for constructor definition
|
|
*/
|
|
fabric.Image = fabric.util.createClass(fabric.Object, /** @lends fabric.Image.prototype */ {
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'image',
|
|
|
|
/**
|
|
* crossOrigin value (one of "", "anonymous", "allow-credentials")
|
|
* @see https://developer.mozilla.org/en-US/docs/HTML/CORS_settings_attributes
|
|
* @type String
|
|
* @default
|
|
*/
|
|
crossOrigin: '',
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {HTMLImageElement | String} element Image element
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Image} thisArg
|
|
*/
|
|
initialize: function(element, options) {
|
|
options || (options = { });
|
|
|
|
this.filters = [ ];
|
|
|
|
this.callSuper('initialize', options);
|
|
|
|
this._initElement(element, options);
|
|
this._initConfig(options);
|
|
|
|
if (options.filters) {
|
|
this.filters = options.filters;
|
|
this.applyFilters();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns image element which this instance if based on
|
|
* @return {HTMLImageElement} Image element
|
|
*/
|
|
getElement: function() {
|
|
return this._element;
|
|
},
|
|
|
|
/**
|
|
* Sets image element for this instance to a specified one.
|
|
* If filters defined they are applied to new image.
|
|
* You might need to call `canvas.renderAll` and `object.setCoords` after replacing, to render new image and update controls area.
|
|
* @param {HTMLImageElement} element
|
|
* @param {Function} [callback] Callback is invoked when all filters have been applied and new image is generated
|
|
* @return {fabric.Image} thisArg
|
|
* @chainable
|
|
*/
|
|
setElement: function(element, callback) {
|
|
this._element = element;
|
|
this._originalElement = element;
|
|
this._initConfig();
|
|
|
|
if (this.filters.length !== 0) {
|
|
this.applyFilters(callback);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets crossOrigin value (on an instance and corresponding image element)
|
|
* @return {fabric.Image} thisArg
|
|
* @chainable
|
|
*/
|
|
setCrossOrigin: function(value) {
|
|
this.crossOrigin = value;
|
|
this._element.crossOrigin = value;
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns original size of an image
|
|
* @return {Object} Object with "width" and "height" properties
|
|
*/
|
|
getOriginalSize: function() {
|
|
var element = this.getElement();
|
|
return {
|
|
width: element.width,
|
|
height: element.height
|
|
};
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_stroke: function(ctx) {
|
|
ctx.save();
|
|
this._setStrokeStyles(ctx);
|
|
ctx.beginPath();
|
|
ctx.strokeRect(-this.width / 2, -this.height / 2, this.width, this.height);
|
|
ctx.closePath();
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderDashedStroke: function(ctx) {
|
|
var x = -this.width / 2,
|
|
y = -this.height / 2,
|
|
w = this.width,
|
|
h = this.height;
|
|
|
|
ctx.save();
|
|
this._setStrokeStyles(ctx);
|
|
|
|
ctx.beginPath();
|
|
fabric.util.drawDashedLine(ctx, x, y, x + w, y, this.strokeDashArray);
|
|
fabric.util.drawDashedLine(ctx, x + w, y, x + w, y + h, this.strokeDashArray);
|
|
fabric.util.drawDashedLine(ctx, x + w, y + h, x, y + h, this.strokeDashArray);
|
|
fabric.util.drawDashedLine(ctx, x, y + h, x, y, this.strokeDashArray);
|
|
ctx.closePath();
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
return extend(this.callSuper('toObject', propertiesToInclude), {
|
|
src: this._originalElement.src || this._originalElement._src,
|
|
filters: this.filters.map(function(filterObj) {
|
|
return filterObj && filterObj.toObject();
|
|
}),
|
|
crossOrigin: this.crossOrigin
|
|
});
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns SVG representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var markup = [], x = -this.width / 2, y = -this.height / 2;
|
|
if (this.group) {
|
|
x = this.left;
|
|
y = this.top;
|
|
}
|
|
markup.push(
|
|
'<g transform="', this.getSvgTransform(), this.getSvgTransformMatrix(), '">\n',
|
|
'<image xlink:href="', this.getSvgSrc(),
|
|
'" x="', x, '" y="', y,
|
|
'" style="', this.getSvgStyles(),
|
|
// we're essentially moving origin of transformation from top/left corner to the center of the shape
|
|
// by wrapping it in container <g> element with actual transformation, then offsetting object to the top/left
|
|
// so that object's center aligns with container's left/top
|
|
'" width="', this.width,
|
|
'" height="', this.height,
|
|
'" preserveAspectRatio="none"',
|
|
'></image>\n'
|
|
);
|
|
|
|
if (this.stroke || this.strokeDashArray) {
|
|
var origFill = this.fill;
|
|
this.fill = null;
|
|
markup.push(
|
|
'<rect ',
|
|
'x="', x, '" y="', y,
|
|
'" width="', this.width, '" height="', this.height,
|
|
'" style="', this.getSvgStyles(),
|
|
'"/>\n'
|
|
);
|
|
this.fill = origFill;
|
|
}
|
|
|
|
markup.push('</g>\n');
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Returns source of an image
|
|
* @return {String} Source of an image
|
|
*/
|
|
getSrc: function() {
|
|
if (this.getElement()) {
|
|
return this.getElement().src || this.getElement()._src;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns string representation of an instance
|
|
* @return {String} String representation of an instance
|
|
*/
|
|
toString: function() {
|
|
return '#<fabric.Image: { src: "' + this.getSrc() + '" }>';
|
|
},
|
|
|
|
/**
|
|
* Returns a clone of an instance
|
|
* @param {Function} callback Callback is invoked with a clone as a first argument
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
*/
|
|
clone: function(callback, propertiesToInclude) {
|
|
this.constructor.fromObject(this.toObject(propertiesToInclude), callback);
|
|
},
|
|
|
|
/**
|
|
* Applies filters assigned to this image (from "filters" array)
|
|
* @mthod applyFilters
|
|
* @param {Function} callback Callback is invoked when all filters have been applied and new image is generated
|
|
* @return {fabric.Image} thisArg
|
|
* @chainable
|
|
*/
|
|
applyFilters: function(callback) {
|
|
|
|
if (!this._originalElement) {
|
|
return;
|
|
}
|
|
|
|
if (this.filters.length === 0) {
|
|
this._element = this._originalElement;
|
|
callback && callback();
|
|
return;
|
|
}
|
|
|
|
var imgEl = this._originalElement,
|
|
canvasEl = fabric.util.createCanvasElement(),
|
|
replacement = fabric.util.createImage(),
|
|
_this = this;
|
|
|
|
canvasEl.width = imgEl.width;
|
|
canvasEl.height = imgEl.height;
|
|
|
|
canvasEl.getContext('2d').drawImage(imgEl, 0, 0, imgEl.width, imgEl.height);
|
|
|
|
this.filters.forEach(function(filter) {
|
|
filter && filter.applyTo(canvasEl);
|
|
});
|
|
|
|
/** @ignore */
|
|
|
|
replacement.width = imgEl.width;
|
|
replacement.height = imgEl.height;
|
|
|
|
if (fabric.isLikelyNode) {
|
|
replacement.src = canvasEl.toBuffer(undefined, fabric.Image.pngCompression);
|
|
|
|
// onload doesn't fire in some node versions, so we invoke callback manually
|
|
_this._element = replacement;
|
|
callback && callback();
|
|
}
|
|
else {
|
|
replacement.onload = function() {
|
|
_this._element = replacement;
|
|
callback && callback();
|
|
replacement.onload = canvasEl = imgEl = null;
|
|
};
|
|
replacement.src = canvasEl.toDataURL('image/png');
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_render: function(ctx, noTransform) {
|
|
this._element &&
|
|
ctx.drawImage(
|
|
this._element,
|
|
noTransform ? this.left : -this.width/2,
|
|
noTransform ? this.top : -this.height/2,
|
|
this.width,
|
|
this.height
|
|
);
|
|
this._renderStroke(ctx);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_resetWidthHeight: function() {
|
|
var element = this.getElement();
|
|
|
|
this.set('width', element.width);
|
|
this.set('height', element.height);
|
|
},
|
|
|
|
/**
|
|
* The Image class's initialization method. This method is automatically
|
|
* called by the constructor.
|
|
* @private
|
|
* @param {HTMLImageElement|String} element The element representing the image
|
|
*/
|
|
_initElement: function(element) {
|
|
this.setElement(fabric.util.getById(element));
|
|
fabric.util.addClass(this.getElement(), fabric.Image.CSS_CANVAS);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} [options] Options object
|
|
*/
|
|
_initConfig: function(options) {
|
|
options || (options = { });
|
|
this.setOptions(options);
|
|
this._setWidthHeight(options);
|
|
if (this._element && this.crossOrigin) {
|
|
this._element.crossOrigin = this.crossOrigin;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} object Object with filters property
|
|
* @param {Function} callback Callback to invoke when all fabric.Image.filters instances are created
|
|
*/
|
|
_initFilters: function(object, callback) {
|
|
if (object.filters && object.filters.length) {
|
|
fabric.util.enlivenObjects(object.filters, function(enlivenedObjects) {
|
|
callback && callback(enlivenedObjects);
|
|
}, 'fabric.Image.filters');
|
|
}
|
|
else {
|
|
callback && callback();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} [options] Object with width/height properties
|
|
*/
|
|
_setWidthHeight: function(options) {
|
|
this.width = 'width' in options
|
|
? options.width
|
|
: (this.getElement()
|
|
? this.getElement().width || 0
|
|
: 0);
|
|
|
|
this.height = 'height' in options
|
|
? options.height
|
|
: (this.getElement()
|
|
? this.getElement().height || 0
|
|
: 0);
|
|
},
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity of this instance
|
|
*/
|
|
complexity: function() {
|
|
return 1;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Default CSS class name for canvas
|
|
* @static
|
|
* @type String
|
|
* @default
|
|
*/
|
|
fabric.Image.CSS_CANVAS = 'canvas-img';
|
|
|
|
/**
|
|
* Alias for getSrc
|
|
* @static
|
|
*/
|
|
fabric.Image.prototype.getSvgSrc = fabric.Image.prototype.getSrc;
|
|
|
|
/**
|
|
* Creates an instance of fabric.Image from its object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @param {Function} [callback] Callback to invoke when an image instance is created
|
|
*/
|
|
fabric.Image.fromObject = function(object, callback) {
|
|
fabric.util.loadImage(object.src, function(img) {
|
|
fabric.Image.prototype._initFilters.call(object, object, function(filters) {
|
|
object.filters = filters || [ ];
|
|
var instance = new fabric.Image(img, object);
|
|
callback && callback(instance);
|
|
});
|
|
}, null, object.crossOrigin);
|
|
};
|
|
|
|
/**
|
|
* Creates an instance of fabric.Image from an URL string
|
|
* @static
|
|
* @param {String} url URL to create an image from
|
|
* @param {Function} [callback] Callback to invoke when image is created (newly created image is passed as a first argument)
|
|
* @param {Object} [imgOptions] Options object
|
|
*/
|
|
fabric.Image.fromURL = function(url, callback, imgOptions) {
|
|
fabric.util.loadImage(url, function(img) {
|
|
callback(new fabric.Image(img, imgOptions));
|
|
}, null, imgOptions && imgOptions.crossOrigin);
|
|
};
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by {@link fabric.Image.fromElement})
|
|
* @static
|
|
* @see {@link http://www.w3.org/TR/SVG/struct.html#ImageElement}
|
|
*/
|
|
fabric.Image.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat('x y width height xlink:href'.split(' '));
|
|
|
|
/**
|
|
* Returns {@link fabric.Image} instance from an SVG element
|
|
* @static
|
|
* @param {SVGElement} element Element to parse
|
|
* @param {Function} callback Callback to execute when fabric.Image object is created
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Image} Instance of fabric.Image
|
|
*/
|
|
fabric.Image.fromElement = function(element, callback, options) {
|
|
var parsedAttributes = fabric.parseAttributes(element, fabric.Image.ATTRIBUTE_NAMES);
|
|
|
|
fabric.Image.fromURL(parsedAttributes['xlink:href'], callback,
|
|
extend((options ? fabric.util.object.clone(options) : { }), parsedAttributes));
|
|
};
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Indicates that instances of this type are async
|
|
* @static
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
fabric.Image.async = true;
|
|
|
|
/**
|
|
* Indicates compression level used when generating PNG under Node (in applyFilters). Any of 0-9
|
|
* @static
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
fabric.Image.pngCompression = 1;
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
/**
|
|
* @namespace fabric.Image.filters
|
|
* @memberOf fabric.Image
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#image_filters}
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
*/
|
|
fabric.Image.filters = fabric.Image.filters || { };
|
|
|
|
/**
|
|
* Root filter class from which all filter classes inherit from
|
|
* @class fabric.Image.filters.BaseFilter
|
|
* @memberOf fabric.Image.filters
|
|
*/
|
|
fabric.Image.filters.BaseFilter = fabric.util.createClass(/** @lends fabric.Image.filters.BaseFilter.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'BaseFilter',
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return { type: this.type };
|
|
},
|
|
|
|
/**
|
|
* Returns a JSON representation of an instance
|
|
* @return {Object} JSON
|
|
*/
|
|
toJSON: function() {
|
|
// delegate, not alias
|
|
return this.toObject();
|
|
}
|
|
});
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* Brightness filter class
|
|
* @class fabric.Image.filters.Brightness
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link fabric.Image.filters.Brightness#initialize} for constructor definition
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.Brightness({
|
|
* brightness: 200
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Brightness = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Brightness.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Brightness',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.Brightness.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {Number} [options.brightness=0] Value to brighten the image up (0..255)
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
this.brightness = options.brightness || 0;
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
brightness = this.brightness;
|
|
|
|
for (var i = 0, len = data.length; i < len; i += 4) {
|
|
data[i] += brightness;
|
|
data[i + 1] += brightness;
|
|
data[i + 2] += brightness;
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
brightness: this.brightness
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Image.filters.Brightness} Instance of fabric.Image.filters.Brightness
|
|
*/
|
|
fabric.Image.filters.Brightness.fromObject = function(object) {
|
|
return new fabric.Image.filters.Brightness(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* Adapted from <a href="http://www.html5rocks.com/en/tutorials/canvas/imagefilters/">html5rocks article</a>
|
|
* @class fabric.Image.filters.Convolute
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link fabric.Image.filters.Convolute#initialize} for constructor definition
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example <caption>Sharpen filter</caption>
|
|
* var filter = new fabric.Image.filters.Convolute({
|
|
* matrix: [ 0, -1, 0,
|
|
* -1, 5, -1,
|
|
* 0, -1, 0 ]
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
* @example <caption>Blur filter</caption>
|
|
* var filter = new fabric.Image.filters.Convolute({
|
|
* matrix: [ 1/9, 1/9, 1/9,
|
|
* 1/9, 1/9, 1/9,
|
|
* 1/9, 1/9, 1/9 ]
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
* @example <caption>Emboss filter</caption>
|
|
* var filter = new fabric.Image.filters.Convolute({
|
|
* matrix: [ 1, 1, 1,
|
|
* 1, 0.7, -1,
|
|
* -1, -1, -1 ]
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
* @example <caption>Emboss filter with opaqueness</caption>
|
|
* var filter = new fabric.Image.filters.Convolute({
|
|
* opaque: true,
|
|
* matrix: [ 1, 1, 1,
|
|
* 1, 0.7, -1,
|
|
* -1, -1, -1 ]
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Convolute = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Convolute.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Convolute',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.Convolute.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {Boolean} [options.opaque=false] Opaque value (true/false)
|
|
* @param {Array} [options.matrix] Filter matrix
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
|
|
this.opaque = options.opaque;
|
|
this.matrix = options.matrix || [
|
|
0, 0, 0,
|
|
0, 1, 0,
|
|
0, 0, 0
|
|
];
|
|
|
|
var canvasEl = fabric.util.createCanvasElement();
|
|
this.tmpCtx = canvasEl.getContext('2d');
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_createImageData: function(w, h) {
|
|
return this.tmpCtx.createImageData(w, h);
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
|
|
var weights = this.matrix,
|
|
context = canvasEl.getContext('2d'),
|
|
pixels = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
|
|
side = Math.round(Math.sqrt(weights.length)),
|
|
halfSide = Math.floor(side/2),
|
|
src = pixels.data,
|
|
sw = pixels.width,
|
|
sh = pixels.height,
|
|
|
|
// pad output by the convolution matrix
|
|
w = sw,
|
|
h = sh,
|
|
output = this._createImageData(w, h),
|
|
|
|
dst = output.data,
|
|
|
|
// go through the destination image pixels
|
|
alphaFac = this.opaque ? 1 : 0;
|
|
|
|
for (var y = 0; y < h; y++) {
|
|
for (var x = 0; x < w; x++) {
|
|
var sy = y,
|
|
sx = x,
|
|
dstOff = (y * w + x) * 4,
|
|
// calculate the weighed sum of the source image pixels that
|
|
// fall under the convolution matrix
|
|
r = 0, g = 0, b = 0, a = 0;
|
|
|
|
for (var cy = 0; cy < side; cy++) {
|
|
for (var cx = 0; cx < side; cx++) {
|
|
|
|
var scy = sy + cy - halfSide,
|
|
scx = sx + cx - halfSide;
|
|
|
|
/* jshint maxdepth:5 */
|
|
if (scy < 0 || scy > sh || scx < 0 || scx > sw) {
|
|
continue;
|
|
}
|
|
|
|
var srcOff = (scy * sw + scx) * 4,
|
|
wt = weights[cy * side + cx];
|
|
|
|
r += src[srcOff] * wt;
|
|
g += src[srcOff + 1] * wt;
|
|
b += src[srcOff + 2] * wt;
|
|
a += src[srcOff + 3] * wt;
|
|
}
|
|
}
|
|
dst[dstOff] = r;
|
|
dst[dstOff + 1] = g;
|
|
dst[dstOff + 2] = b;
|
|
dst[dstOff + 3] = a + alphaFac * (255 - a);
|
|
}
|
|
}
|
|
|
|
context.putImageData(output, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
opaque: this.opaque,
|
|
matrix: this.matrix
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Image.filters.Convolute} Instance of fabric.Image.filters.Convolute
|
|
*/
|
|
fabric.Image.filters.Convolute.fromObject = function(object) {
|
|
return new fabric.Image.filters.Convolute(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* GradientTransparency filter class
|
|
* @class fabric.Image.filters.GradientTransparency
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link fabric.Image.filters.GradientTransparency#initialize} for constructor definition
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.GradientTransparency({
|
|
* threshold: 200
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.GradientTransparency = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.GradientTransparency.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'GradientTransparency',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.GradientTransparency.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {Number} [options.threshold=100] Threshold value
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
this.threshold = options.threshold || 100;
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
threshold = this.threshold,
|
|
total = data.length;
|
|
|
|
for (var i = 0, len = data.length; i < len; i += 4) {
|
|
data[i + 3] = threshold + 255 * (total - i) / total;
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
threshold: this.threshold
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Image.filters.GradientTransparency} Instance of fabric.Image.filters.GradientTransparency
|
|
*/
|
|
fabric.Image.filters.GradientTransparency.fromObject = function(object) {
|
|
return new fabric.Image.filters.GradientTransparency(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
/**
|
|
* Grayscale image filter class
|
|
* @class fabric.Image.filters.Grayscale
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.Grayscale();
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Grayscale = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Grayscale.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Grayscale',
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @memberOf fabric.Image.filters.Grayscale.prototype
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
len = imageData.width * imageData.height * 4,
|
|
index = 0,
|
|
average;
|
|
|
|
while (index < len) {
|
|
average = (data[index] + data[index + 1] + data[index + 2]) / 3;
|
|
data[index] = average;
|
|
data[index + 1] = average;
|
|
data[index + 2] = average;
|
|
index += 4;
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @return {fabric.Image.filters.Grayscale} Instance of fabric.Image.filters.Grayscale
|
|
*/
|
|
fabric.Image.filters.Grayscale.fromObject = function() {
|
|
return new fabric.Image.filters.Grayscale();
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
/**
|
|
* Invert filter class
|
|
* @class fabric.Image.filters.Invert
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.Invert();
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Invert = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Invert.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Invert',
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @memberOf fabric.Image.filters.Invert.prototype
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
iLen = data.length, i;
|
|
|
|
for (i = 0; i < iLen; i+=4) {
|
|
data[i] = 255 - data[i];
|
|
data[i + 1] = 255 - data[i + 1];
|
|
data[i + 2] = 255 - data[i + 2];
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @return {fabric.Image.filters.Invert} Instance of fabric.Image.filters.Invert
|
|
*/
|
|
fabric.Image.filters.Invert.fromObject = function() {
|
|
return new fabric.Image.filters.Invert();
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* Mask filter class
|
|
* See http://resources.aleph-1.com/mask/
|
|
* @class fabric.Image.filters.Mask
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link fabric.Image.filters.Mask#initialize} for constructor definition
|
|
*/
|
|
fabric.Image.filters.Mask = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Mask.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Mask',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.Mask.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {fabric.Image} [options.mask] Mask image object
|
|
* @param {Number} [options.channel=0] Rgb channel (0, 1, 2 or 3)
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
|
|
this.mask = options.mask;
|
|
this.channel = [ 0, 1, 2, 3 ].indexOf(options.channel) > -1 ? options.channel : 0;
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
if (!this.mask) {
|
|
return;
|
|
}
|
|
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
maskEl = this.mask.getElement(),
|
|
maskCanvasEl = fabric.util.createCanvasElement(),
|
|
channel = this.channel,
|
|
i,
|
|
iLen = imageData.width * imageData.height * 4;
|
|
|
|
maskCanvasEl.width = maskEl.width;
|
|
maskCanvasEl.height = maskEl.height;
|
|
|
|
maskCanvasEl.getContext('2d').drawImage(maskEl, 0, 0, maskEl.width, maskEl.height);
|
|
|
|
var maskImageData = maskCanvasEl.getContext('2d').getImageData(0, 0, maskEl.width, maskEl.height),
|
|
maskData = maskImageData.data;
|
|
|
|
for (i = 0; i < iLen; i += 4) {
|
|
data[i + 3] = maskData[i + channel];
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
mask: this.mask.toObject(),
|
|
channel: this.channel
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @param {Function} [callback] Callback to invoke when a mask filter instance is created
|
|
*/
|
|
fabric.Image.filters.Mask.fromObject = function(object, callback) {
|
|
fabric.util.loadImage(object.mask.src, function(img) {
|
|
object.mask = new fabric.Image(img, object.mask);
|
|
callback && callback(new fabric.Image.filters.Mask(object));
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Indicates that instances of this type are async
|
|
* @static
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
fabric.Image.filters.Mask.async = true;
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* Noise filter class
|
|
* @class fabric.Image.filters.Noise
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link fabric.Image.filters.Noise#initialize} for constructor definition
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.Noise({
|
|
* noise: 700
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Noise = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Noise.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Noise',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.Noise.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {Number} [options.noise=0] Noise value
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
this.noise = options.noise || 0;
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
noise = this.noise, rand;
|
|
|
|
for (var i = 0, len = data.length; i < len; i += 4) {
|
|
|
|
rand = (0.5 - Math.random()) * noise;
|
|
|
|
data[i] += rand;
|
|
data[i + 1] += rand;
|
|
data[i + 2] += rand;
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
noise: this.noise
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Image.filters.Noise} Instance of fabric.Image.filters.Noise
|
|
*/
|
|
fabric.Image.filters.Noise.fromObject = function(object) {
|
|
return new fabric.Image.filters.Noise(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* Pixelate filter class
|
|
* @class fabric.Image.filters.Pixelate
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link fabric.Image.filters.Pixelate#initialize} for constructor definition
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.Pixelate({
|
|
* blocksize: 8
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Pixelate = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Pixelate.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Pixelate',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.Pixelate.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {Number} [options.blocksize=4] Blocksize for pixelate
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
this.blocksize = options.blocksize || 4;
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
iLen = imageData.height,
|
|
jLen = imageData.width,
|
|
index, i, j, r, g, b, a;
|
|
|
|
for (i = 0; i < iLen; i += this.blocksize) {
|
|
for (j = 0; j < jLen; j += this.blocksize) {
|
|
|
|
index = (i * 4) * jLen + (j * 4);
|
|
|
|
r = data[index];
|
|
g = data[index + 1];
|
|
b = data[index + 2];
|
|
a = data[index + 3];
|
|
|
|
/*
|
|
blocksize: 4
|
|
|
|
[1,x,x,x,1]
|
|
[x,x,x,x,1]
|
|
[x,x,x,x,1]
|
|
[x,x,x,x,1]
|
|
[1,1,1,1,1]
|
|
*/
|
|
|
|
for (var _i = i, _ilen = i + this.blocksize; _i < _ilen; _i++) {
|
|
for (var _j = j, _jlen = j + this.blocksize; _j < _jlen; _j++) {
|
|
index = (_i * 4) * jLen + (_j * 4);
|
|
data[index] = r;
|
|
data[index + 1] = g;
|
|
data[index + 2] = b;
|
|
data[index + 3] = a;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
blocksize: this.blocksize
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Image.filters.Pixelate} Instance of fabric.Image.filters.Pixelate
|
|
*/
|
|
fabric.Image.filters.Pixelate.fromObject = function(object) {
|
|
return new fabric.Image.filters.Pixelate(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* Remove white filter class
|
|
* @class fabric.Image.filters.RemoveWhite
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link fabric.Image.filters.RemoveWhite#initialize} for constructor definition
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.RemoveWhite({
|
|
* threshold: 40,
|
|
* distance: 140
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.RemoveWhite = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.RemoveWhite.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'RemoveWhite',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.RemoveWhite.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {Number} [options.threshold=30] Threshold value
|
|
* @param {Number} [options.distance=20] Distance value
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
this.threshold = options.threshold || 30;
|
|
this.distance = options.distance || 20;
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
threshold = this.threshold,
|
|
distance = this.distance,
|
|
limit = 255 - threshold,
|
|
abs = Math.abs,
|
|
r, g, b;
|
|
|
|
for (var i = 0, len = data.length; i < len; i += 4) {
|
|
r = data[i];
|
|
g = data[i + 1];
|
|
b = data[i + 2];
|
|
|
|
if (r > limit &&
|
|
g > limit &&
|
|
b > limit &&
|
|
abs(r - g) < distance &&
|
|
abs(r - b) < distance &&
|
|
abs(g - b) < distance
|
|
) {
|
|
data[i + 3] = 1;
|
|
}
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
threshold: this.threshold,
|
|
distance: this.distance
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Image.filters.RemoveWhite} Instance of fabric.Image.filters.RemoveWhite
|
|
*/
|
|
fabric.Image.filters.RemoveWhite.fromObject = function(object) {
|
|
return new fabric.Image.filters.RemoveWhite(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
/**
|
|
* Sepia filter class
|
|
* @class fabric.Image.filters.Sepia
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.Sepia();
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Sepia = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Sepia.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Sepia',
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @memberOf fabric.Image.filters.Sepia.prototype
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
iLen = data.length, i, avg;
|
|
|
|
for (i = 0; i < iLen; i+=4) {
|
|
avg = 0.3 * data[i] + 0.59 * data[i + 1] + 0.11 * data[i + 2];
|
|
data[i] = avg + 100;
|
|
data[i + 1] = avg + 50;
|
|
data[i + 2] = avg + 255;
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @return {fabric.Image.filters.Sepia} Instance of fabric.Image.filters.Sepia
|
|
*/
|
|
fabric.Image.filters.Sepia.fromObject = function() {
|
|
return new fabric.Image.filters.Sepia();
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { });
|
|
|
|
/**
|
|
* Sepia2 filter class
|
|
* @class fabric.Image.filters.Sepia2
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example
|
|
* var filter = new fabric.Image.filters.Sepia2();
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Sepia2 = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Sepia2.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Sepia2',
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @memberOf fabric.Image.filters.Sepia.prototype
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
iLen = data.length, i, r, g, b;
|
|
|
|
for (i = 0; i < iLen; i+=4) {
|
|
r = data[i];
|
|
g = data[i + 1];
|
|
b = data[i + 2];
|
|
|
|
data[i] = (r * 0.393 + g * 0.769 + b * 0.189 ) / 1.351;
|
|
data[i + 1] = (r * 0.349 + g * 0.686 + b * 0.168 ) / 1.203;
|
|
data[i + 2] = (r * 0.272 + g * 0.534 + b * 0.131 ) / 2.140;
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @return {fabric.Image.filters.Sepia2} Instance of fabric.Image.filters.Sepia2
|
|
*/
|
|
fabric.Image.filters.Sepia2.fromObject = function() {
|
|
return new fabric.Image.filters.Sepia2();
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* Tint filter class
|
|
* Adapted from <a href="https://github.com/mezzoblue/PaintbrushJS">https://github.com/mezzoblue/PaintbrushJS</a>
|
|
* @class fabric.Image.filters.Tint
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @see {@link fabric.Image.filters.Tint#initialize} for constructor definition
|
|
* @see {@link http://fabricjs.com/image-filters/|ImageFilters demo}
|
|
* @example <caption>Tint filter with hex color and opacity</caption>
|
|
* var filter = new fabric.Image.filters.Tint({
|
|
* color: '#3513B0',
|
|
* opacity: 0.5
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
* @example <caption>Tint filter with rgba color</caption>
|
|
* var filter = new fabric.Image.filters.Tint({
|
|
* color: 'rgba(53, 21, 176, 0.5)'
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Tint = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Tint.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Tint',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.Tint.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {String} [options.color=#000000] Color to tint the image with
|
|
* @param {Number} [options.opacity] Opacity value that controls the tint effect's transparency (0..1)
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
|
|
this.color = options.color || '#000000';
|
|
this.opacity = typeof options.opacity !== 'undefined'
|
|
? options.opacity
|
|
: new fabric.Color(this.color).getAlpha();
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
iLen = data.length, i,
|
|
tintR, tintG, tintB,
|
|
r, g, b, alpha1,
|
|
source;
|
|
|
|
source = new fabric.Color(this.color).getSource();
|
|
|
|
tintR = source[0] * this.opacity;
|
|
tintG = source[1] * this.opacity;
|
|
tintB = source[2] * this.opacity;
|
|
|
|
alpha1 = 1 - this.opacity;
|
|
|
|
for (i = 0; i < iLen; i+=4) {
|
|
r = data[i];
|
|
g = data[i + 1];
|
|
b = data[i + 2];
|
|
|
|
// alpha compositing
|
|
data[i] = tintR + r * alpha1;
|
|
data[i + 1] = tintG + g * alpha1;
|
|
data[i + 2] = tintB + b * alpha1;
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
color: this.color,
|
|
opacity: this.opacity
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Image.filters.Tint} Instance of fabric.Image.filters.Tint
|
|
*/
|
|
fabric.Image.filters.Tint.fromObject = function(object) {
|
|
return new fabric.Image.filters.Tint(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend;
|
|
|
|
/**
|
|
* Multiply filter class
|
|
* Adapted from <a href="http://www.laurenscorijn.com/articles/colormath-basics">http://www.laurenscorijn.com/articles/colormath-basics</a>
|
|
* @class fabric.Image.filters.Multiply
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @example <caption>Multiply filter with hex color</caption>
|
|
* var filter = new fabric.Image.filters.Multiply({
|
|
* color: '#F0F'
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
* @example <caption>Multiply filter with rgb color</caption>
|
|
* var filter = new fabric.Image.filters.Multiply({
|
|
* color: 'rgb(53, 21, 176)'
|
|
* });
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Multiply = fabric.util.createClass(fabric.Image.filters.BaseFilter, /** @lends fabric.Image.filters.Multiply.prototype */ {
|
|
|
|
/**
|
|
* Filter type
|
|
* @param {String} type
|
|
* @default
|
|
*/
|
|
type: 'Multiply',
|
|
|
|
/**
|
|
* Constructor
|
|
* @memberOf fabric.Image.filters.Multiply.prototype
|
|
* @param {Object} [options] Options object
|
|
* @param {String} [options.color=#000000] Color to multiply the image pixels with
|
|
*/
|
|
initialize: function(options) {
|
|
options = options || { };
|
|
|
|
this.color = options.color || '#000000';
|
|
},
|
|
|
|
/**
|
|
* Applies filter to canvas element
|
|
* @param {Object} canvasEl Canvas element to apply filter to
|
|
*/
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
iLen = data.length, i,
|
|
source;
|
|
|
|
source = new fabric.Color(this.color).getSource();
|
|
|
|
for (i = 0; i < iLen; i+=4) {
|
|
data[i] *= source[0] / 255;
|
|
data[i + 1] *= source[1] / 255;
|
|
data[i + 2] *= source[2] / 255;
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function() {
|
|
return extend(this.callSuper('toObject'), {
|
|
color: this.color
|
|
});
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Returns filter instance from an object representation
|
|
* @static
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Image.filters.Multiply} Instance of fabric.Image.filters.Multiply
|
|
*/
|
|
fabric.Image.filters.Multiply.fromObject = function(object) {
|
|
return new fabric.Image.filters.Multiply(object);
|
|
};
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global){
|
|
'use strict';
|
|
|
|
var fabric = global.fabric;
|
|
|
|
/**
|
|
* Color Blend filter class
|
|
* @class fabric.Image.filter.Blend
|
|
* @memberOf fabric.Image.filters
|
|
* @extends fabric.Image.filters.BaseFilter
|
|
* @example
|
|
* var filter = new fabric.Image.filters.Blend({
|
|
* color: '#000',
|
|
* mode: 'multiply'
|
|
* });
|
|
*
|
|
* var filter = new fabric.Image.filters.Blend({
|
|
* image: fabricImageObject,
|
|
* mode: 'multiply',
|
|
* alpha: 0.5
|
|
* });
|
|
|
|
* object.filters.push(filter);
|
|
* object.applyFilters(canvas.renderAll.bind(canvas));
|
|
*/
|
|
fabric.Image.filters.Blend = fabric.util.createClass({
|
|
type: 'Blend',
|
|
|
|
initialize: function(options){
|
|
options = options || {};
|
|
this.color = options.color || '#000';
|
|
this.image = options.image || false;
|
|
this.mode = options.mode || 'multiply';
|
|
this.alpha = options.alpha || 1;
|
|
},
|
|
|
|
applyTo: function(canvasEl) {
|
|
var context = canvasEl.getContext('2d'),
|
|
imageData = context.getImageData(0, 0, canvasEl.width, canvasEl.height),
|
|
data = imageData.data,
|
|
tr, tg, tb,
|
|
r, g, b,
|
|
source,
|
|
isImage = false;
|
|
|
|
if (this.image) {
|
|
// Blend images
|
|
isImage = true;
|
|
|
|
var _el = fabric.util.createCanvasElement();
|
|
_el.width = this.image.width;
|
|
_el.height = this.image.height;
|
|
|
|
var tmpCanvas = new fabric.StaticCanvas(_el);
|
|
tmpCanvas.add(this.image);
|
|
var context2 = tmpCanvas.getContext('2d');
|
|
source = context2.getImageData(0, 0, tmpCanvas.width, tmpCanvas.height).data;
|
|
}
|
|
else {
|
|
// Blend color
|
|
source = new fabric.Color(this.color).getSource();
|
|
|
|
tr = source[0] * this.alpha;
|
|
tg = source[1] * this.alpha;
|
|
tb = source[2] * this.alpha;
|
|
}
|
|
|
|
for (var i = 0, len = data.length; i < len; i += 4) {
|
|
|
|
r = data[i];
|
|
g = data[i + 1];
|
|
b = data[i + 2];
|
|
|
|
if (isImage) {
|
|
tr = source[i] * this.alpha;
|
|
tg = source[i + 1] * this.alpha;
|
|
tb = source[i + 2] * this.alpha;
|
|
}
|
|
|
|
switch (this.mode) {
|
|
case 'multiply':
|
|
data[i] = r * tr / 255;
|
|
data[i + 1] = g * tg / 255;
|
|
data[i + 2] = b * tb / 255;
|
|
break;
|
|
case 'screen':
|
|
data[i] = 1 - (1 - r) * (1 - tr);
|
|
data[i + 1] = 1 - (1 - g) * (1 - tg);
|
|
data[i + 2] = 1 - (1 - b) * (1 - tb);
|
|
break;
|
|
case 'add':
|
|
data[i] = Math.min(255, r + tr);
|
|
data[i + 1] = Math.min(255, g + tg);
|
|
data[i + 2] = Math.min(255, b + tb);
|
|
break;
|
|
case 'diff':
|
|
case 'difference':
|
|
data[i] = Math.abs(r - tr);
|
|
data[i + 1] = Math.abs(g - tg);
|
|
data[i + 2] = Math.abs(b - tb);
|
|
break;
|
|
case 'subtract':
|
|
var _r = r - tr,
|
|
_g = g - tg,
|
|
_b = b - tb;
|
|
|
|
data[i] = (_r < 0) ? 0 : _r;
|
|
data[i + 1] = (_g < 0) ? 0 : _g;
|
|
data[i + 2] = (_b < 0) ? 0 : _b;
|
|
break;
|
|
case 'darken':
|
|
data[i] = Math.min(r, tr);
|
|
data[i + 1] = Math.min(g, tg);
|
|
data[i + 2] = Math.min(b, tb);
|
|
break;
|
|
case 'lighten':
|
|
data[i] = Math.max(r, tr);
|
|
data[i + 1] = Math.max(g, tg);
|
|
data[i + 2] = Math.max(b, tb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
context.putImageData(imageData, 0, 0);
|
|
}
|
|
});
|
|
|
|
fabric.Image.filters.Blend.fromObject = function(object) {
|
|
return new fabric.Image.filters.Blend(object);
|
|
};
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
(function(global) {
|
|
|
|
'use strict';
|
|
|
|
var fabric = global.fabric || (global.fabric = { }),
|
|
extend = fabric.util.object.extend,
|
|
clone = fabric.util.object.clone,
|
|
toFixed = fabric.util.toFixed,
|
|
supportsLineDash = fabric.StaticCanvas.supports('setLineDash');
|
|
|
|
if (fabric.Text) {
|
|
fabric.warn('fabric.Text is already defined');
|
|
return;
|
|
}
|
|
|
|
var stateProperties = fabric.Object.prototype.stateProperties.concat();
|
|
stateProperties.push(
|
|
'fontFamily',
|
|
'fontWeight',
|
|
'fontSize',
|
|
'text',
|
|
'textDecoration',
|
|
'textAlign',
|
|
'fontStyle',
|
|
'lineHeight',
|
|
'textBackgroundColor',
|
|
'useNative',
|
|
'path'
|
|
);
|
|
|
|
/**
|
|
* Text class
|
|
* @class fabric.Text
|
|
* @extends fabric.Object
|
|
* @return {fabric.Text} thisArg
|
|
* @tutorial {@link http://fabricjs.com/fabric-intro-part-2/#text}
|
|
* @see {@link fabric.Text#initialize} for constructor definition
|
|
*/
|
|
fabric.Text = fabric.util.createClass(fabric.Object, /** @lends fabric.Text.prototype */ {
|
|
|
|
/**
|
|
* Properties which when set cause object to change dimensions
|
|
* @type Object
|
|
* @private
|
|
*/
|
|
_dimensionAffectingProps: {
|
|
fontSize: true,
|
|
fontWeight: true,
|
|
fontFamily: true,
|
|
textDecoration: true,
|
|
fontStyle: true,
|
|
lineHeight: true,
|
|
stroke: true,
|
|
strokeWidth: true,
|
|
text: true
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_reNewline: /\r?\n/,
|
|
|
|
/**
|
|
* Retrieves object's fontSize
|
|
* @method getFontSize
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {String} Font size (in pixels)
|
|
*/
|
|
|
|
/**
|
|
* Sets object's fontSize
|
|
* @method setFontSize
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {Number} fontSize Font size (in pixels)
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's fontWeight
|
|
* @method getFontWeight
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {(String|Number)} Font weight
|
|
*/
|
|
|
|
/**
|
|
* Sets object's fontWeight
|
|
* @method setFontWeight
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {(Number|String)} fontWeight Font weight
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's fontFamily
|
|
* @method getFontFamily
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {String} Font family
|
|
*/
|
|
|
|
/**
|
|
* Sets object's fontFamily
|
|
* @method setFontFamily
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {String} fontFamily Font family
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's text
|
|
* @method getText
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {String} text
|
|
*/
|
|
|
|
/**
|
|
* Sets object's text
|
|
* @method setText
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {String} text Text
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's textDecoration
|
|
* @method getTextDecoration
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {String} Text decoration
|
|
*/
|
|
|
|
/**
|
|
* Sets object's textDecoration
|
|
* @method setTextDecoration
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {String} textDecoration Text decoration
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's fontStyle
|
|
* @method getFontStyle
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {String} Font style
|
|
*/
|
|
|
|
/**
|
|
* Sets object's fontStyle
|
|
* @method setFontStyle
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {String} fontStyle Font style
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's lineHeight
|
|
* @method getLineHeight
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {Number} Line height
|
|
*/
|
|
|
|
/**
|
|
* Sets object's lineHeight
|
|
* @method setLineHeight
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {Number} lineHeight Line height
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's textAlign
|
|
* @method getTextAlign
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {String} Text alignment
|
|
*/
|
|
|
|
/**
|
|
* Sets object's textAlign
|
|
* @method setTextAlign
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {String} textAlign Text alignment
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Retrieves object's textBackgroundColor
|
|
* @method getTextBackgroundColor
|
|
* @memberOf fabric.Text.prototype
|
|
* @return {String} Text background color
|
|
*/
|
|
|
|
/**
|
|
* Sets object's textBackgroundColor
|
|
* @method setTextBackgroundColor
|
|
* @memberOf fabric.Text.prototype
|
|
* @param {String} textBackgroundColor Text background color
|
|
* @return {fabric.Text}
|
|
* @chainable
|
|
*/
|
|
|
|
/**
|
|
* Type of an object
|
|
* @type String
|
|
* @default
|
|
*/
|
|
type: 'text',
|
|
|
|
/**
|
|
* Font size (in pixels)
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
fontSize: 40,
|
|
|
|
/**
|
|
* Font weight (e.g. bold, normal, 400, 600, 800)
|
|
* @type {(Number|String)}
|
|
* @default
|
|
*/
|
|
fontWeight: 'normal',
|
|
|
|
/**
|
|
* Font family
|
|
* @type String
|
|
* @default
|
|
*/
|
|
fontFamily: 'Times New Roman',
|
|
|
|
/**
|
|
* Text decoration Possible values: "", "underline", "overline" or "line-through".
|
|
* @type String
|
|
* @default
|
|
*/
|
|
textDecoration: '',
|
|
|
|
/**
|
|
* Text alignment. Possible values: "left", "center", or "right".
|
|
* @type String
|
|
* @default
|
|
*/
|
|
textAlign: 'left',
|
|
|
|
/**
|
|
* Font style . Possible values: "", "normal", "italic" or "oblique".
|
|
* @type String
|
|
* @default
|
|
*/
|
|
fontStyle: '',
|
|
|
|
/**
|
|
* Line height
|
|
* @type Number
|
|
* @default
|
|
*/
|
|
lineHeight: 1.3,
|
|
|
|
/**
|
|
* Background color of text lines
|
|
* @type String
|
|
* @default
|
|
*/
|
|
textBackgroundColor: '',
|
|
|
|
/**
|
|
* URL of a font file, when using Cufon
|
|
* @type String | null
|
|
* @default
|
|
*/
|
|
path: null,
|
|
|
|
/**
|
|
* Indicates whether canvas native text methods should be used to render text (otherwise, Cufon is used)
|
|
* @type Boolean
|
|
* @default
|
|
*/
|
|
useNative: true,
|
|
|
|
/**
|
|
* List of properties to consider when checking if
|
|
* state of an object is changed ({@link fabric.Object#hasStateChanged})
|
|
* as well as for history (undo/redo) purposes
|
|
* @type Array
|
|
*/
|
|
stateProperties: stateProperties,
|
|
|
|
/**
|
|
* When defined, an object is rendered via stroke and this property specifies its color.
|
|
* <b>Backwards incompatibility note:</b> This property was named "strokeStyle" until v1.1.6
|
|
* @type String
|
|
* @default
|
|
*/
|
|
stroke: null,
|
|
|
|
/**
|
|
* Shadow object representing shadow of this shape.
|
|
* <b>Backwards incompatibility note:</b> This property was named "textShadow" (String) until v1.2.11
|
|
* @type fabric.Shadow
|
|
* @default
|
|
*/
|
|
shadow: null,
|
|
|
|
/**
|
|
* Constructor
|
|
* @param {String} text Text string
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Text} thisArg
|
|
*/
|
|
initialize: function(text, options) {
|
|
options = options || { };
|
|
|
|
this.text = text;
|
|
this.__skipDimension = true;
|
|
this.setOptions(options);
|
|
this.__skipDimension = false;
|
|
this._initDimensions();
|
|
},
|
|
|
|
/**
|
|
* Renders text object on offscreen canvas, so that it would get dimensions
|
|
* @private
|
|
*/
|
|
_initDimensions: function() {
|
|
if (this.__skipDimension) {
|
|
return;
|
|
}
|
|
var canvasEl = fabric.util.createCanvasElement();
|
|
this._render(canvasEl.getContext('2d'));
|
|
},
|
|
|
|
/**
|
|
* Returns string representation of an instance
|
|
* @return {String} String representation of text object
|
|
*/
|
|
toString: function() {
|
|
return '#<fabric.Text (' + this.complexity() +
|
|
'): { "text": "' + this.text + '", "fontFamily": "' + this.fontFamily + '" }>';
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_render: function(ctx) {
|
|
|
|
if (typeof Cufon === 'undefined' || this.useNative === true) {
|
|
this._renderViaNative(ctx);
|
|
}
|
|
else {
|
|
this._renderViaCufon(ctx);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderViaNative: function(ctx) {
|
|
var textLines = this.text.split(this._reNewline);
|
|
|
|
this._setTextStyles(ctx);
|
|
|
|
this.width = this._getTextWidth(ctx, textLines);
|
|
this.height = this._getTextHeight(ctx, textLines);
|
|
|
|
this.clipTo && fabric.util.clipContext(this, ctx);
|
|
|
|
this._renderTextBackground(ctx, textLines);
|
|
this._translateForTextAlign(ctx);
|
|
this._renderText(ctx, textLines);
|
|
|
|
if (this.textAlign !== 'left' && this.textAlign !== 'justify') {
|
|
ctx.restore();
|
|
}
|
|
|
|
this._renderTextDecoration(ctx, textLines);
|
|
this.clipTo && ctx.restore();
|
|
|
|
this._setBoundaries(ctx, textLines);
|
|
this._totalLineHeight = 0;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderText: function(ctx, textLines) {
|
|
ctx.save();
|
|
this._setShadow(ctx);
|
|
this._setupFillRule(ctx);
|
|
this._renderTextFill(ctx, textLines);
|
|
this._renderTextStroke(ctx, textLines);
|
|
this._restoreFillRule(ctx);
|
|
this._removeShadow(ctx);
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_translateForTextAlign: function(ctx) {
|
|
if (this.textAlign !== 'left' && this.textAlign !== 'justify') {
|
|
ctx.save();
|
|
ctx.translate(this.textAlign === 'center' ? (this.width / 2) : this.width, 0);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Array} textLines Array of all text lines
|
|
*/
|
|
_setBoundaries: function(ctx, textLines) {
|
|
this._boundaries = [ ];
|
|
|
|
for (var i = 0, len = textLines.length; i < len; i++) {
|
|
|
|
var lineWidth = this._getLineWidth(ctx, textLines[i]),
|
|
lineLeftOffset = this._getLineLeftOffset(lineWidth);
|
|
|
|
this._boundaries.push({
|
|
height: this.fontSize * this.lineHeight,
|
|
width: lineWidth,
|
|
left: lineLeftOffset
|
|
});
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_setTextStyles: function(ctx) {
|
|
this._setFillStyles(ctx);
|
|
this._setStrokeStyles(ctx);
|
|
ctx.textBaseline = 'alphabetic';
|
|
if (!this.skipTextAlign) {
|
|
ctx.textAlign = this.textAlign;
|
|
}
|
|
ctx.font = this._getFontDeclaration();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Array} textLines Array of all text lines
|
|
* @return {Number} Height of fabric.Text object
|
|
*/
|
|
_getTextHeight: function(ctx, textLines) {
|
|
return this.fontSize * textLines.length * this.lineHeight;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Array} textLines Array of all text lines
|
|
* @return {Number} Maximum width of fabric.Text object
|
|
*/
|
|
_getTextWidth: function(ctx, textLines) {
|
|
var maxWidth = ctx.measureText(textLines[0] || '|').width;
|
|
|
|
for (var i = 1, len = textLines.length; i < len; i++) {
|
|
var currentLineWidth = ctx.measureText(textLines[i]).width;
|
|
if (currentLineWidth > maxWidth) {
|
|
maxWidth = currentLineWidth;
|
|
}
|
|
}
|
|
return maxWidth;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} method Method name ("fillText" or "strokeText")
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {String} chars Chars to render
|
|
* @param {Number} left Left position of text
|
|
* @param {Number} top Top position of text
|
|
*/
|
|
_renderChars: function(method, ctx, chars, left, top) {
|
|
ctx[method](chars, left, top);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {String} method Method name ("fillText" or "strokeText")
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {String} line Text to render
|
|
* @param {Number} left Left position of text
|
|
* @param {Number} top Top position of text
|
|
* @param {Number} lineIndex Index of a line in a text
|
|
*/
|
|
_renderTextLine: function(method, ctx, line, left, top, lineIndex) {
|
|
// lift the line by quarter of fontSize
|
|
top -= this.fontSize / 4;
|
|
|
|
// short-circuit
|
|
if (this.textAlign !== 'justify') {
|
|
this._renderChars(method, ctx, line, left, top, lineIndex);
|
|
return;
|
|
}
|
|
|
|
var lineWidth = ctx.measureText(line).width,
|
|
totalWidth = this.width;
|
|
|
|
if (totalWidth > lineWidth) {
|
|
// stretch the line
|
|
var words = line.split(/\s+/),
|
|
wordsWidth = ctx.measureText(line.replace(/\s+/g, '')).width,
|
|
widthDiff = totalWidth - wordsWidth,
|
|
numSpaces = words.length - 1,
|
|
spaceWidth = widthDiff / numSpaces,
|
|
leftOffset = 0;
|
|
|
|
for (var i = 0, len = words.length; i < len; i++) {
|
|
this._renderChars(method, ctx, words[i], left + leftOffset, top, lineIndex);
|
|
leftOffset += ctx.measureText(words[i]).width + spaceWidth;
|
|
}
|
|
}
|
|
else {
|
|
this._renderChars(method, ctx, line, left, top, lineIndex);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @return {Number} Left offset
|
|
*/
|
|
_getLeftOffset: function() {
|
|
if (fabric.isLikelyNode) {
|
|
return 0;
|
|
}
|
|
return -this.width / 2;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @return {Number} Top offset
|
|
*/
|
|
_getTopOffset: function() {
|
|
return -this.height / 2;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Array} textLines Array of all text lines
|
|
*/
|
|
_renderTextFill: function(ctx, textLines) {
|
|
if (!this.fill && !this._skipFillStrokeCheck) {
|
|
return;
|
|
}
|
|
|
|
this._boundaries = [ ];
|
|
var lineHeights = 0;
|
|
|
|
for (var i = 0, len = textLines.length; i < len; i++) {
|
|
var heightOfLine = this._getHeightOfLine(ctx, i, textLines);
|
|
lineHeights += heightOfLine;
|
|
|
|
this._renderTextLine(
|
|
'fillText',
|
|
ctx,
|
|
textLines[i],
|
|
this._getLeftOffset(),
|
|
this._getTopOffset() + lineHeights,
|
|
i
|
|
);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Array} textLines Array of all text lines
|
|
*/
|
|
_renderTextStroke: function(ctx, textLines) {
|
|
if ((!this.stroke || this.strokeWidth === 0) && !this._skipFillStrokeCheck) {
|
|
return;
|
|
}
|
|
|
|
var lineHeights = 0;
|
|
|
|
ctx.save();
|
|
if (this.strokeDashArray) {
|
|
// Spec requires the concatenation of two copies the dash list when the number of elements is odd
|
|
if (1 & this.strokeDashArray.length) {
|
|
this.strokeDashArray.push.apply(this.strokeDashArray, this.strokeDashArray);
|
|
}
|
|
supportsLineDash && ctx.setLineDash(this.strokeDashArray);
|
|
}
|
|
|
|
ctx.beginPath();
|
|
for (var i = 0, len = textLines.length; i < len; i++) {
|
|
var heightOfLine = this._getHeightOfLine(ctx, i, textLines);
|
|
lineHeights += heightOfLine;
|
|
|
|
this._renderTextLine(
|
|
'strokeText',
|
|
ctx,
|
|
textLines[i],
|
|
this._getLeftOffset(),
|
|
this._getTopOffset() + lineHeights,
|
|
i
|
|
);
|
|
}
|
|
ctx.closePath();
|
|
ctx.restore();
|
|
},
|
|
|
|
_getHeightOfLine: function() {
|
|
return this.fontSize * this.lineHeight;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Array} textLines Array of all text lines
|
|
*/
|
|
_renderTextBackground: function(ctx, textLines) {
|
|
this._renderTextBoxBackground(ctx);
|
|
this._renderTextLinesBackground(ctx, textLines);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
_renderTextBoxBackground: function(ctx) {
|
|
if (!this.backgroundColor) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
ctx.fillStyle = this.backgroundColor;
|
|
|
|
ctx.fillRect(
|
|
this._getLeftOffset(),
|
|
this._getTopOffset(),
|
|
this.width,
|
|
this.height
|
|
);
|
|
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Array} textLines Array of all text lines
|
|
*/
|
|
_renderTextLinesBackground: function(ctx, textLines) {
|
|
if (!this.textBackgroundColor) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
ctx.fillStyle = this.textBackgroundColor;
|
|
|
|
for (var i = 0, len = textLines.length; i < len; i++) {
|
|
|
|
if (textLines[i] !== '') {
|
|
|
|
var lineWidth = this._getLineWidth(ctx, textLines[i]),
|
|
lineLeftOffset = this._getLineLeftOffset(lineWidth);
|
|
|
|
ctx.fillRect(
|
|
this._getLeftOffset() + lineLeftOffset,
|
|
this._getTopOffset() + (i * this.fontSize * this.lineHeight),
|
|
lineWidth,
|
|
this.fontSize * this.lineHeight
|
|
);
|
|
}
|
|
}
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Number} lineWidth Width of text line
|
|
* @return {Number} Line left offset
|
|
*/
|
|
_getLineLeftOffset: function(lineWidth) {
|
|
if (this.textAlign === 'center') {
|
|
return (this.width - lineWidth) / 2;
|
|
}
|
|
if (this.textAlign === 'right') {
|
|
return this.width - lineWidth;
|
|
}
|
|
return 0;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {String} line Text line
|
|
* @return {Number} Line width
|
|
*/
|
|
_getLineWidth: function(ctx, line) {
|
|
return this.textAlign === 'justify'
|
|
? this.width
|
|
: ctx.measureText(line).width;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
* @param {Array} textLines Array of all text lines
|
|
*/
|
|
_renderTextDecoration: function(ctx, textLines) {
|
|
if (!this.textDecoration) {
|
|
return;
|
|
}
|
|
|
|
// var halfOfVerticalBox = this.originY === 'top' ? 0 : this._getTextHeight(ctx, textLines) / 2;
|
|
var halfOfVerticalBox = this._getTextHeight(ctx, textLines) / 2,
|
|
_this = this;
|
|
|
|
/** @ignore */
|
|
function renderLinesAtOffset(offset) {
|
|
for (var i = 0, len = textLines.length; i < len; i++) {
|
|
|
|
var lineWidth = _this._getLineWidth(ctx, textLines[i]),
|
|
lineLeftOffset = _this._getLineLeftOffset(lineWidth);
|
|
|
|
ctx.fillRect(
|
|
_this._getLeftOffset() + lineLeftOffset,
|
|
~~((offset + (i * _this._getHeightOfLine(ctx, i, textLines))) - halfOfVerticalBox),
|
|
lineWidth,
|
|
1);
|
|
}
|
|
}
|
|
|
|
if (this.textDecoration.indexOf('underline') > -1) {
|
|
renderLinesAtOffset(this.fontSize * this.lineHeight);
|
|
}
|
|
if (this.textDecoration.indexOf('line-through') > -1) {
|
|
renderLinesAtOffset(this.fontSize * this.lineHeight - this.fontSize / 2);
|
|
}
|
|
if (this.textDecoration.indexOf('overline') > -1) {
|
|
renderLinesAtOffset(this.fontSize * this.lineHeight - this.fontSize);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getFontDeclaration: function() {
|
|
return [
|
|
// node-canvas needs "weight style", while browsers need "style weight"
|
|
(fabric.isLikelyNode ? this.fontWeight : this.fontStyle),
|
|
(fabric.isLikelyNode ? this.fontStyle : this.fontWeight),
|
|
this.fontSize + 'px',
|
|
(fabric.isLikelyNode ? ('"' + this.fontFamily + '"') : this.fontFamily)
|
|
].join(' ');
|
|
},
|
|
|
|
/**
|
|
* Renders text instance on a specified context
|
|
* @param {CanvasRenderingContext2D} ctx Context to render on
|
|
*/
|
|
render: function(ctx, noTransform) {
|
|
// do not render if object is not visible
|
|
if (!this.visible) {
|
|
return;
|
|
}
|
|
|
|
ctx.save();
|
|
this._transform(ctx, noTransform);
|
|
|
|
var m = this.transformMatrix,
|
|
isInPathGroup = this.group && this.group.type === 'path-group';
|
|
|
|
if (isInPathGroup) {
|
|
ctx.translate(-this.group.width/2, -this.group.height/2);
|
|
}
|
|
if (m) {
|
|
ctx.transform(m[0], m[1], m[2], m[3], m[4], m[5]);
|
|
}
|
|
if (isInPathGroup) {
|
|
ctx.translate(this.left, this.top);
|
|
}
|
|
this._render(ctx);
|
|
ctx.restore();
|
|
},
|
|
|
|
/**
|
|
* Returns object representation of an instance
|
|
* @param {Array} [propertiesToInclude] Any properties that you might want to additionally include in the output
|
|
* @return {Object} Object representation of an instance
|
|
*/
|
|
toObject: function(propertiesToInclude) {
|
|
var object = extend(this.callSuper('toObject', propertiesToInclude), {
|
|
text: this.text,
|
|
fontSize: this.fontSize,
|
|
fontWeight: this.fontWeight,
|
|
fontFamily: this.fontFamily,
|
|
fontStyle: this.fontStyle,
|
|
lineHeight: this.lineHeight,
|
|
textDecoration: this.textDecoration,
|
|
textAlign: this.textAlign,
|
|
path: this.path,
|
|
textBackgroundColor: this.textBackgroundColor,
|
|
useNative: this.useNative
|
|
});
|
|
if (!this.includeDefaultValues) {
|
|
this._removeDefaultValues(object);
|
|
}
|
|
return object;
|
|
},
|
|
|
|
/* _TO_SVG_START_ */
|
|
/**
|
|
* Returns SVG representation of an instance
|
|
* @param {Function} [reviver] Method for further parsing of svg representation.
|
|
* @return {String} svg representation of an instance
|
|
*/
|
|
toSVG: function(reviver) {
|
|
var markup = [ ],
|
|
textLines = this.text.split(this._reNewline),
|
|
offsets = this._getSVGLeftTopOffsets(textLines),
|
|
textAndBg = this._getSVGTextAndBg(offsets.lineTop, offsets.textLeft, textLines),
|
|
shadowSpans = this._getSVGShadows(offsets.lineTop, textLines);
|
|
|
|
// move top offset by an ascent
|
|
offsets.textTop += (this._fontAscent ? ((this._fontAscent / 5) * this.lineHeight) : 0);
|
|
|
|
this._wrapSVGTextAndBg(markup, textAndBg, shadowSpans, offsets);
|
|
|
|
return reviver ? reviver(markup.join('')) : markup.join('');
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getSVGLeftTopOffsets: function(textLines) {
|
|
var lineTop = this.useNative
|
|
? this.fontSize * this.lineHeight
|
|
: (-this._fontAscent - ((this._fontAscent / 5) * this.lineHeight)),
|
|
|
|
textLeft = -(this.width/2),
|
|
textTop = this.useNative
|
|
? this.fontSize - 1
|
|
: (this.height/2) - (textLines.length * this.fontSize) - this._totalLineHeight;
|
|
|
|
return {
|
|
textLeft: textLeft + (this.group && this.group.type === 'path-group' ? this.left : 0),
|
|
textTop: textTop + (this.group && this.group.type === 'path-group' ? this.top : 0),
|
|
lineTop: lineTop
|
|
};
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_wrapSVGTextAndBg: function(markup, textAndBg, shadowSpans, offsets) {
|
|
markup.push(
|
|
'<g transform="', this.getSvgTransform(), this.getSvgTransformMatrix(), '">\n',
|
|
textAndBg.textBgRects.join(''),
|
|
'<text ',
|
|
(this.fontFamily ? 'font-family="' + this.fontFamily.replace(/"/g,'\'') + '" ': ''),
|
|
(this.fontSize ? 'font-size="' + this.fontSize + '" ': ''),
|
|
(this.fontStyle ? 'font-style="' + this.fontStyle + '" ': ''),
|
|
(this.fontWeight ? 'font-weight="' + this.fontWeight + '" ': ''),
|
|
(this.textDecoration ? 'text-decoration="' + this.textDecoration + '" ': ''),
|
|
'style="', this.getSvgStyles(), '" ',
|
|
/* svg starts from left/bottom corner so we normalize height */
|
|
'transform="translate(', toFixed(offsets.textLeft, 2), ' ', toFixed(offsets.textTop, 2), ')">',
|
|
shadowSpans.join(''),
|
|
textAndBg.textSpans.join(''),
|
|
'</text>\n',
|
|
'</g>\n'
|
|
);
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Number} lineHeight
|
|
* @param {Array} textLines Array of all text lines
|
|
* @return {Array}
|
|
*/
|
|
_getSVGShadows: function(lineHeight, textLines) {
|
|
var shadowSpans = [],
|
|
i, len,
|
|
lineTopOffsetMultiplier = 1;
|
|
|
|
if (!this.shadow || !this._boundaries) {
|
|
return shadowSpans;
|
|
}
|
|
|
|
for (i = 0, len = textLines.length; i < len; i++) {
|
|
if (textLines[i] !== '') {
|
|
var lineLeftOffset = (this._boundaries && this._boundaries[i]) ? this._boundaries[i].left : 0;
|
|
shadowSpans.push(
|
|
'<tspan x="',
|
|
toFixed((lineLeftOffset + lineTopOffsetMultiplier) + this.shadow.offsetX, 2),
|
|
((i === 0 || this.useNative) ? '" y' : '" dy'), '="',
|
|
toFixed(this.useNative
|
|
? ((lineHeight * i) - this.height / 2 + this.shadow.offsetY)
|
|
: (lineHeight + (i === 0 ? this.shadow.offsetY : 0)), 2),
|
|
'" ',
|
|
this._getFillAttributes(this.shadow.color), '>',
|
|
fabric.util.string.escapeXml(textLines[i]),
|
|
'</tspan>');
|
|
lineTopOffsetMultiplier = 1;
|
|
}
|
|
else {
|
|
// in some environments (e.g. IE 7 & 8) empty tspans are completely ignored, using a lineTopOffsetMultiplier
|
|
// prevents empty tspans
|
|
lineTopOffsetMultiplier++;
|
|
}
|
|
}
|
|
|
|
return shadowSpans;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
* @param {Number} lineHeight
|
|
* @param {Number} textLeftOffset Text left offset
|
|
* @param {Array} textLines Array of all text lines
|
|
* @return {Object}
|
|
*/
|
|
_getSVGTextAndBg: function(lineHeight, textLeftOffset, textLines) {
|
|
var textSpans = [ ],
|
|
textBgRects = [ ],
|
|
lineTopOffsetMultiplier = 1;
|
|
|
|
// bounding-box background
|
|
this._setSVGBg(textBgRects);
|
|
|
|
// text and text-background
|
|
for (var i = 0, len = textLines.length; i < len; i++) {
|
|
if (textLines[i] !== '') {
|
|
this._setSVGTextLineText(textLines[i], i, textSpans, lineHeight, lineTopOffsetMultiplier, textBgRects);
|
|
lineTopOffsetMultiplier = 1;
|
|
}
|
|
else {
|
|
// in some environments (e.g. IE 7 & 8) empty tspans are completely ignored, using a lineTopOffsetMultiplier
|
|
// prevents empty tspans
|
|
lineTopOffsetMultiplier++;
|
|
}
|
|
|
|
if (!this.textBackgroundColor || !this._boundaries) {
|
|
continue;
|
|
}
|
|
|
|
this._setSVGTextLineBg(textBgRects, i, textLeftOffset, lineHeight);
|
|
}
|
|
|
|
return {
|
|
textSpans: textSpans,
|
|
textBgRects: textBgRects
|
|
};
|
|
},
|
|
|
|
_setSVGTextLineText: function(textLine, i, textSpans, lineHeight, lineTopOffsetMultiplier) {
|
|
var lineLeftOffset = (this._boundaries && this._boundaries[i])
|
|
? toFixed(this._boundaries[i].left, 2)
|
|
: 0;
|
|
|
|
textSpans.push(
|
|
'<tspan x="',
|
|
lineLeftOffset, '" ',
|
|
(i === 0 || this.useNative ? 'y' : 'dy'), '="',
|
|
toFixed(this.useNative
|
|
? ((lineHeight * i) - this.height / 2)
|
|
: (lineHeight * lineTopOffsetMultiplier), 2), '" ',
|
|
// doing this on <tspan> elements since setting opacity
|
|
// on containing <text> one doesn't work in Illustrator
|
|
this._getFillAttributes(this.fill), '>',
|
|
fabric.util.string.escapeXml(textLine),
|
|
'</tspan>'
|
|
);
|
|
},
|
|
|
|
_setSVGTextLineBg: function(textBgRects, i, textLeftOffset, lineHeight) {
|
|
textBgRects.push(
|
|
'<rect ',
|
|
this._getFillAttributes(this.textBackgroundColor),
|
|
' x="',
|
|
toFixed(textLeftOffset + this._boundaries[i].left, 2),
|
|
'" y="',
|
|
/* an offset that seems to straighten things out */
|
|
toFixed((lineHeight * i) - this.height / 2, 2),
|
|
'" width="',
|
|
toFixed(this._boundaries[i].width, 2),
|
|
'" height="',
|
|
toFixed(this._boundaries[i].height, 2),
|
|
'"></rect>\n');
|
|
},
|
|
|
|
_setSVGBg: function(textBgRects) {
|
|
if (this.backgroundColor && this._boundaries) {
|
|
textBgRects.push(
|
|
'<rect ',
|
|
this._getFillAttributes(this.backgroundColor),
|
|
' x="',
|
|
toFixed(-this.width / 2, 2),
|
|
'" y="',
|
|
toFixed(-this.height / 2, 2),
|
|
'" width="',
|
|
toFixed(this.width, 2),
|
|
'" height="',
|
|
toFixed(this.height, 2),
|
|
'"></rect>');
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Adobe Illustrator (at least CS5) is unable to render rgba()-based fill values
|
|
* we work around it by "moving" alpha channel into opacity attribute and setting fill's alpha to 1
|
|
*
|
|
* @private
|
|
* @param {Any} value
|
|
* @return {String}
|
|
*/
|
|
_getFillAttributes: function(value) {
|
|
var fillColor = (value && typeof value === 'string') ? new fabric.Color(value) : '';
|
|
if (!fillColor || !fillColor.getSource() || fillColor.getAlpha() === 1) {
|
|
return 'fill="' + value + '"';
|
|
}
|
|
return 'opacity="' + fillColor.getAlpha() + '" fill="' + fillColor.setAlpha(1).toRgb() + '"';
|
|
},
|
|
/* _TO_SVG_END_ */
|
|
|
|
/**
|
|
* Sets specified property to a specified value
|
|
* @param {String} key
|
|
* @param {Any} value
|
|
* @return {fabric.Text} thisArg
|
|
* @chainable
|
|
*/
|
|
_set: function(key, value) {
|
|
if (key === 'fontFamily' && this.path) {
|
|
this.path = this.path.replace(/(.*?)([^\/]*)(\.font\.js)/, '$1' + value + '$3');
|
|
}
|
|
this.callSuper('_set', key, value);
|
|
|
|
if (key in this._dimensionAffectingProps) {
|
|
this._initDimensions();
|
|
this.setCoords();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns complexity of an instance
|
|
* @return {Number} complexity
|
|
*/
|
|
complexity: function() {
|
|
return 1;
|
|
}
|
|
});
|
|
|
|
/* _FROM_SVG_START_ */
|
|
/**
|
|
* List of attribute names to account for when parsing SVG element (used by {@link fabric.Text.fromElement})
|
|
* @static
|
|
* @memberOf fabric.Text
|
|
* @see: http://www.w3.org/TR/SVG/text.html#TextElement
|
|
*/
|
|
fabric.Text.ATTRIBUTE_NAMES = fabric.SHARED_ATTRIBUTES.concat(
|
|
'x y dx dy font-family font-style font-weight font-size text-decoration text-anchor'.split(' '));
|
|
|
|
/**
|
|
* Default SVG font size
|
|
* @static
|
|
* @memberOf fabric.Text
|
|
*/
|
|
fabric.Text.DEFAULT_SVG_FONT_SIZE = 16;
|
|
|
|
/**
|
|
* Returns fabric.Text instance from an SVG element (<b>not yet implemented</b>)
|
|
* @static
|
|
* @memberOf fabric.Text
|
|
* @param {SVGElement} element Element to parse
|
|
* @param {Object} [options] Options object
|
|
* @return {fabric.Text} Instance of fabric.Text
|
|
*/
|
|
fabric.Text.fromElement = function(element, options) {
|
|
if (!element) {
|
|
return null;
|
|
}
|
|
|
|
var parsedAttributes = fabric.parseAttributes(element, fabric.Text.ATTRIBUTE_NAMES);
|
|
options = fabric.util.object.extend((options ? fabric.util.object.clone(options) : { }), parsedAttributes);
|
|
|
|
if ('dx' in parsedAttributes) {
|
|
options.left += parsedAttributes.dx;
|
|
}
|
|
if ('dy' in parsedAttributes) {
|
|
options.top += parsedAttributes.dy;
|
|
}
|
|
if (!('fontSize' in options)) {
|
|
options.fontSize = fabric.Text.DEFAULT_SVG_FONT_SIZE;
|
|
}
|
|
|
|
if (!options.originX) {
|
|
options.originX = 'left';
|
|
}
|
|
|
|
var text = new fabric.Text(element.textContent, options),
|
|
/*
|
|
Adjust positioning:
|
|
x/y attributes in SVG correspond to the bottom-left corner of text bounding box
|
|
top/left properties in Fabric correspond to center point of text bounding box
|
|
*/
|
|
offX = 0;
|
|
|
|
if (text.originX === 'left') {
|
|
offX = text.getWidth() / 2;
|
|
}
|
|
if (text.originX === 'right') {
|
|
offX = -text.getWidth() / 2;
|
|
}
|
|
text.set({
|
|
left: text.getLeft() + offX,
|
|
top: text.getTop() - text.getHeight() / 2
|
|
});
|
|
|
|
return text;
|
|
};
|
|
/* _FROM_SVG_END_ */
|
|
|
|
/**
|
|
* Returns fabric.Text instance from an object representation
|
|
* @static
|
|
* @memberOf fabric.Text
|
|
* @param {Object} object Object to create an instance from
|
|
* @return {fabric.Text} Instance of fabric.Text
|
|
*/
|
|
fabric.Text.fromObject = function(object) {
|
|
return new fabric.Text(object.text, clone(object));
|
|
};
|
|
|
|
fabric.util.createAccessors(fabric.Text);
|
|
|
|
})(typeof exports !== 'undefined' ? exports : this);
|
|
|
|
|
|
}).call({}, window, document, html2canvas); |