mirror of
https://github.com/piskelapp/piskel.git
synced 2023-08-10 21:12:52 +03:00
341 lines
12 KiB
JavaScript
341 lines
12 KiB
JavaScript
(function ($) {
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var frameSheet,
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// Constants:
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TRANSPARENT_COLOR = 'tc',
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//TRANSPARENT_COLOR = 'pink',
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DEFAULT_PEN_COLOR = '#000',
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// Configuration:
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// Canvas size in pixel size (not dpi related)
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framePixelWidth = 32,
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framePixelHeight = 32,
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// Scaling factors for a given frameSheet rendering:
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// Main drawing area:
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drawingCanvasDpi = 20,
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// Canvas previous in the slideshow:
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previewTileCanvasDpi = 4,
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// Ainmated canvas preview:
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previewAnimationCanvasDpi = 8,
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// DOM references:
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drawingAreaContainer,
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drawingAreaCanvas,
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previewCanvas,
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// States:
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isClicked = false,
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isRightClicked = false,
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activeFrameIndex = -1,
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animIndex = 0,
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penColor = DEFAULT_PEN_COLOR;
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var piskel = {
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init : function () {
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frameSheet = FrameSheetModel.getInstance(framePixelWidth, framePixelHeight);
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frameSheet.addEmptyFrame();
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this.setActiveFrame(0);
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this.initDrawingArea();
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this.initPreviewSlideshow();
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this.initAnimationPreview();
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this.initColorPicker();
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},
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setActiveFrame: function(index) {
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activeFrameIndex = index;
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},
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setActiveFrameAndRedraw: function(index) {
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this.setActiveFrame(index);
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// Update drawing canvas:
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this.drawFrameToCanvas(frameSheet.getFrameByIndex(this.getActiveFrameIndex()), drawingAreaCanvas, drawingCanvasDpi);
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// Update slideshow:
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this.createPreviews();
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// Update animation preview:
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animIndex = 0;
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},
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getActiveFrameIndex: function() {
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if(-1 == activeFrameIndex) {
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throw "Bad active frane initialization."
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}
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return activeFrameIndex;
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},
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initColorPicker: function() {
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var colorPicker = document.getElementById('color-picker');
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colorPicker.value = DEFAULT_PEN_COLOR;
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colorPicker.addEventListener('change', function(evt) {
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penColor = colorPicker.value;
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});
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},
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initDrawingArea : function() {
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drawingAreaContainer = $('drawing-canvas-container');
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drawingAreaCanvas = document.createElement("canvas");
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drawingAreaCanvas.className = 'canvas';
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drawingAreaCanvas.setAttribute('width', '' + framePixelWidth * drawingCanvasDpi);
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drawingAreaCanvas.setAttribute('height', '' + framePixelHeight * drawingCanvasDpi);
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drawingAreaContainer.setAttribute('style',
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'width:' + framePixelWidth * drawingCanvasDpi + 'px; height:' + framePixelHeight * drawingCanvasDpi + 'px;');
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drawingAreaCanvas.setAttribute('oncontextmenu', 'piskel.onCanvasContextMenu(arguments[0])');
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drawingAreaContainer.appendChild(drawingAreaCanvas);
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var body = document.getElementsByTagName('body')[0];
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body.setAttribute('onmouseup', 'piskel.onCanvasMouseup(arguments[0])');
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drawingAreaContainer.setAttribute('onmousedown', 'piskel.onCanvasMousedown(arguments[0])');
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drawingAreaContainer.setAttribute('onmousemove', 'piskel.onCanvasMousemove(arguments[0])');
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this.drawFrameToCanvas(frameSheet.getFrameByIndex(this.getActiveFrameIndex()), drawingAreaCanvas, drawingCanvasDpi);
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},
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initPreviewSlideshow: function() {
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var addFrameButton = $('add-frame-button');
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addFrameButton.addEventListener('mousedown', function() {
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frameSheet.addEmptyFrame();
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piskel.setActiveFrameAndRedraw(frameSheet.getFrameCount() - 1);
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});
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this.createPreviews();
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},
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initAnimationPreview : function() {
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var scope = this;
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var previewAnimationContainer = $('preview-canvas-container');
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previewCanvas = document.createElement('canvas');
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previewCanvas.className = 'canvas';
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previewAnimationContainer.setAttribute('style',
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'width:' + framePixelWidth * previewAnimationCanvasDpi + 'px; height:' + framePixelHeight * previewAnimationCanvasDpi + 'px;');
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previewAnimationContainer.appendChild(previewCanvas);
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previewCanvas.setAttribute('width', framePixelWidth * previewAnimationCanvasDpi);
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previewCanvas.setAttribute('height', framePixelHeight * previewAnimationCanvasDpi);
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var animFPSTuner = document.getElementById("preview-fps");
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var animPreviewFPS = parseInt(animFPSTuner.value, 10);
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var startPreviewRefresh = function() {
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return setInterval(scope.refreshAnimatedPreview, 1000/animPreviewFPS);
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};
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var refreshUpdater = startPreviewRefresh();
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animFPSTuner.addEventListener('keyup', function(evt) {
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window.clearInterval(refreshUpdater);
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animPreviewFPS = parseInt(animFPSTuner.value, 10);
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if(isNaN(animPreviewFPS)) {
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animPreviewFPS = 1;
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}
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if(evt.keyCode == 38) {
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animPreviewFPS++;
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}
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else if (evt.keyCode == 40) {
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animPreviewFPS--;
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}
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if(animPreviewFPS < 1) {
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animPreviewFPS = 1;
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}
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if(animPreviewFPS > 100) {
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animPreviewFPS = 100;
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}
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animFPSTuner.value = animPreviewFPS;
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refreshUpdater = startPreviewRefresh();
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});
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},
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createPreviews : function () {
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var container = $('preview-list'), previewTile;
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container.innerHTML = "";
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for (var i = 0, l = frameSheet.getFrameCount(); i < l ; i++) {
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previewTile = this.createPreviewTile(i);
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container.appendChild(previewTile);
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}
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},
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createPreviewTile: function(tileNumber) {
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var previewTileRoot = document.createElement("li");
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var classname = "preview-tile";
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if (this.getActiveFrameIndex() == tileNumber) {
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classname += " selected";
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}
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previewTileRoot.className = classname;
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var canvasContainer = document.createElement("div");
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canvasContainer.className = "canvas-container";
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canvasContainer.setAttribute('style',
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'width:' + framePixelWidth * previewTileCanvasDpi + 'px; height:' + framePixelHeight * previewTileCanvasDpi + 'px;');
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var canvasBackground = document.createElement("div");
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canvasBackground.className = "canvas-background";
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canvasContainer.appendChild(canvasBackground);
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var canvasPreview = document.createElement("canvas");
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canvasPreview.className = "canvas tile-view"
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canvasPreview.setAttribute('width', framePixelWidth * previewTileCanvasDpi);
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canvasPreview.setAttribute('height', framePixelHeight * previewTileCanvasDpi);
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previewTileRoot.addEventListener('click', function(evt) {
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// has not class tile-action:
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// TODO: let me know when you want to start using a framework :)
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if(!evt.target.className.match(new RegExp('(\\s|^)'+ 'tile-action' +'(\\s|$)'))) {
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piskel.setActiveFrameAndRedraw(tileNumber);
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}
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});
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var canvasPreviewDuplicateAction = document.createElement("button");
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canvasPreviewDuplicateAction.className = "tile-action"
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canvasPreviewDuplicateAction.innerHTML = "dup"
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canvasPreviewDuplicateAction.addEventListener('click', function(evt) {
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piskel.duplicateFrame(tileNumber);
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});
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this.drawFrameToCanvas(frameSheet.getFrameByIndex(tileNumber), canvasPreview, previewTileCanvasDpi);
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canvasContainer.appendChild(canvasPreview);
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previewTileRoot.appendChild(canvasContainer);
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previewTileRoot.appendChild(canvasPreviewDuplicateAction);
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if(tileNumber > 0 || frameSheet.getFrameCount() > 1) {
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var canvasPreviewDeleteAction = document.createElement("button");
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canvasPreviewDeleteAction.className = "tile-action"
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canvasPreviewDeleteAction.innerHTML = "del"
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canvasPreviewDeleteAction.addEventListener('click', function(evt) {
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piskel.removeFrame(tileNumber);
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});
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previewTileRoot.appendChild(canvasPreviewDeleteAction);
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}
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return previewTileRoot;
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},
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refreshAnimatedPreview : function () {
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piskel.drawFrameToCanvas(frameSheet.getFrameByIndex(animIndex), previewCanvas, previewAnimationCanvasDpi);
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animIndex++;
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if (animIndex == frameSheet.getFrameCount()) {
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animIndex = 0;
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}
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},
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removeFrame: function(frameIndex) {
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frameSheet.removeFrameByIndex(frameIndex);
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this.setActiveFrameAndRedraw(frameIndex - 1);
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},
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duplicateFrame: function(frameIndex) {
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frameSheet.duplicateFrameByIndex(frameIndex);
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this.setActiveFrameAndRedraw(frameIndex + 1);
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},
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updateCursorInfo : function (event) {
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var cursor = $('cursorInfo');
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cursor.style.top = event.clientY + 10 + "px";
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cursor.style.left = event.clientX + 10 + "px";
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var coordinates = this.getRelativeCoordinates(event.clientX, event.clientY)
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cursor.innerHTML = [
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"X : " + coordinates.x,
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"Y : " + coordinates.y
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].join(", ");
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},
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onCanvasMousedown : function (event) {
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isClicked = true;
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var coords = this.getRelativeCoordinates(event.clientX, event.clientY);
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if(event.button == 0) {
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this.drawAt(coords.x, coords.y, penColor);
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} else {
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// Right click used to delete.
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isRightClicked = true;
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this.drawAt(coords.x, coords.y, TRANSPARENT_COLOR);
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}
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},
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onCanvasMousemove : function (event) {
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//this.updateCursorInfo(event);
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if (isClicked) {
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var coords = this.getRelativeCoordinates(event.clientX, event.clientY);
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if(isRightClicked) {
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this.drawAt(coords.x, coords.y, TRANSPARENT_COLOR);
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} else {
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this.drawAt(coords.x, coords.y, penColor);
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}
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}
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},
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onCanvasMouseup : function (event) {
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if(isClicked || isRightClicked) {
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// A mouse button was clicked on the drawing canvas before this mouseup event,
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// the user was probably drawing on the canvas.
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// Note: The mousemove movement (and the mouseup) may end up outside
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// of the drawing canvas.
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this.createPreviews();
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}
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isClicked = false;
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isRightClicked = false;
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},
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drawAt : function (x, y, color) {
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var pixelWidthIndex = (x - x%drawingCanvasDpi) / drawingCanvasDpi;
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var pixelHeightIndex = (y - y%drawingCanvasDpi) / drawingCanvasDpi;
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// Update model:
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var currentFrame = frameSheet.getFrameByIndex(this.getActiveFrameIndex());
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// TODO: make a better accessor for pixel state update:
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// TODO: Make pen color dynamic:
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currentFrame[pixelWidthIndex][pixelHeightIndex] = color;
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// Update view:
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// TODO: Create a per pixel update function for perf ?
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this.drawFrameToCanvas(currentFrame, drawingAreaCanvas, drawingCanvasDpi);
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},
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// TODO: move that to a FrameRenderer (/w cache) ?
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drawFrameToCanvas: function(frame, canvasElement, dpi) {
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var pixelColor, context = canvasElement.getContext('2d');
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for(var col = 0, num_col = frame.length; col < num_col; col++) {
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for(var row = 0, num_row = frame[col].length; row < num_row; row++) {
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pixelColor = frame[col][row];
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if(pixelColor == undefined || pixelColor == TRANSPARENT_COLOR) {
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context.clearRect(col * dpi, row * dpi, dpi, dpi);
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} else {
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context.fillStyle = pixelColor;
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context.fillRect(col * dpi, row * dpi, dpi, dpi);
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}
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}
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}
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},
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onCanvasContextMenu : function (event) {
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event.preventDefault();
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event.stopPropagation();
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event.cancelBubble = true;
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return false;
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},
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getRelativeCoordinates : function (x, y) {
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var canvasRect = drawingAreaCanvas.getBoundingClientRect();
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return {
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x : x - canvasRect.left,
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y : y - canvasRect.top
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}
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}
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};
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window.piskel = piskel;
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piskel.init();
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})(function(id){return document.getElementById(id)}); |