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Code Issues Projects Releases Wiki Activity

Split renderers to their own objects

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This commit is contained in:
MoyuScript 2012-03-02 20:35:48 +02:00
parent 62fcedba6f
commit ffcd5c04fb
7 changed files with 452 additions and 415 deletions
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1
build.xml
View File

@ -22,6 +22,7 @@
<file name="Queue.js"/> <file name="Queue.js"/>
<file name="Renderer.js"/> <file name="Renderer.js"/>
<file name="Util.js"/> <file name="Util.js"/>
<file name="renderers/Canvas.js"/>
<file name="html2canvas-post.txt"/> <file name="html2canvas-post.txt"/>
</filelist> </filelist>
</path> </path>

5
readme.md
View File

@ -37,6 +37,11 @@ For more information and examples, please visit the <a href="http://html2canvas.
### Changelog ### ### Changelog ###
v0.34 -
* Split renderers to their own objects (<a href="#">niklasvh</a>)
* Simplified API, cleaned up code (<a href="https://github.com/niklasvh/html2canvas/commit/c7d526c9eaa6a4abf4754d205fe1dee360c7660e">niklasvh</a>)
v0.33 - 2.3.2012 v0.33 - 2.3.2012
* SVG taint fix, and additional taint testing options for rendering (<a href="https://github.com/niklasvh/html2canvas/commit/2dc8b9385e656696cb019d615bdfa1d98b17d5d4">niklasvh</a>) * SVG taint fix, and additional taint testing options for rendering (<a href="https://github.com/niklasvh/html2canvas/commit/2dc8b9385e656696cb019d615bdfa1d98b17d5d4">niklasvh</a>)

419
src/Renderer.js
View File

@ -8,15 +8,8 @@
_html2canvas.Renderer = function(parseQueue, options){ _html2canvas.Renderer = function(parseQueue, options){
var queue = [], var queue = [];
canvas,
usingFlashcanvas = false,
flashMaxSize = 2880, // flash bitmap limited to 2880x2880px // http://stackoverflow.com/questions/2033792/argumenterror-error-2015-invalid-bitmapdata
doc = document;
function sortZ(zStack){ function sortZ(zStack){
var subStacks = [], var subStacks = [],
stackValues = [], stackValues = [],
@ -63,411 +56,11 @@ _html2canvas.Renderer = function(parseQueue, options){
} }
function canvasRenderer(zStack){
sortZ(zStack.zIndex);
var ctx = canvas.getContext("2d"), sortZ(parseQueue.zIndex);
storageContext, if ( typeof options.renderer._create !== "function" ) {
i, throw Error("Invalid renderer defined");
queueLen,
a,
newCanvas,
bounds,
testCanvas = document.createElement("canvas"),
hasCTX = ( testCanvas.getContext !== undefined ),
storageLen,
renderItem,
testctx = ( hasCTX ) ? testCanvas.getContext("2d") : {},
safeImages = [],
fstyle;
canvas.width = canvas.style.width = (!usingFlashcanvas) ? options.width || zStack.ctx.width : Math.min(flashMaxSize, (options.width || zStack.ctx.width) );
canvas.height = canvas.style.height = (!usingFlashcanvas) ? options.height || zStack.ctx.height : Math.min(flashMaxSize, (options.height || zStack.ctx.height) );
fstyle = ctx.fillStyle;
ctx.fillStyle = zStack.backgroundColor;
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = fstyle;
for (i = 0, queueLen = queue.length; i < queueLen; i+=1){
storageContext = queue.splice(0, 1)[0];
storageContext.canvasPosition = storageContext.canvasPosition || {};
//this.canvasRenderContext(storageContext,parentctx);
// set common settings for canvas
ctx.textBaseline = "bottom";
if (storageContext.clip){
ctx.save();
ctx.beginPath();
// console.log(storageContext);
ctx.rect(storageContext.clip.left, storageContext.clip.top, storageContext.clip.width, storageContext.clip.height);
ctx.clip();
}
if (storageContext.ctx.storage){
for (a = 0, storageLen = storageContext.ctx.storage.length; a < storageLen; a+=1){
renderItem = storageContext.ctx.storage[a];
switch(renderItem.type){
case "variable":
ctx[renderItem.name] = renderItem['arguments'];
break;
case "function":
if (renderItem.name === "fillRect") {
if (!usingFlashcanvas || renderItem['arguments'][0] + renderItem['arguments'][2] < flashMaxSize && renderItem['arguments'][1] + renderItem['arguments'][3] < flashMaxSize) {
ctx.fillRect.apply( ctx, renderItem['arguments'] );
}
}else if(renderItem.name === "fillText") {
if (!usingFlashcanvas || renderItem['arguments'][1] < flashMaxSize && renderItem['arguments'][2] < flashMaxSize) {
ctx.fillText.apply( ctx, renderItem['arguments'] );
}
}else if(renderItem.name === "drawImage") {
if (renderItem['arguments'][8] > 0 && renderItem['arguments'][7]){
if ( hasCTX && options.taintTest ) {
if ( safeImages.indexOf( renderItem['arguments'][ 0 ].src ) === -1 ) {
testctx.drawImage( renderItem['arguments'][ 0 ], 0, 0 );
try {
testctx.getImageData( 0, 0, 1, 1 );
} catch(e) {
testCanvas = document.createElement("canvas");
testctx = testCanvas.getContext("2d");
continue;
}
safeImages.push( renderItem['arguments'][ 0 ].src );
}
}
ctx.drawImage.apply( ctx, renderItem['arguments'] );
}
}
break;
default:
}
}
}
if (storageContext.clip){
ctx.restore();
}
}
h2clog("html2canvas: Renderer: Canvas renderer done - returning canvas obj");
// this.canvasRenderStorage(queue,this.ctx);
queueLen = options.elements.length;
if (queueLen === 1) {
if (typeof options.elements[ 0 ] === "object" && options.elements[ 0 ].nodeName !== "BODY" && usingFlashcanvas === false) {
// crop image to the bounds of selected (single) element
bounds = _html2canvas.Util.Bounds( options.elements[ 0 ] );
newCanvas = doc.createElement('canvas');
newCanvas.width = bounds.width;
newCanvas.height = bounds.height;
ctx = newCanvas.getContext("2d");
ctx.drawImage( canvas, bounds.left, bounds.top, bounds.width, bounds.height, 0, 0, bounds.width, bounds.height );
canvas = null;
return newCanvas;
}
} /*else {
// TODO clip and resize multiple elements
for ( i = 0; i < queueLen; i+=1 ) {
if (options.elements[ i ] instanceof Element) {
}
}
}
*/
return canvas;
} }
return options.renderer._create( parseQueue, options, document, queue, _html2canvas );
function svgRenderer(zStack){
sortZ(zStack.zIndex);
var svgNS = "http://www.w3.org/2000/svg",
svg = doc.createElementNS(svgNS, "svg"),
xlinkNS = "http://www.w3.org/1999/xlink",
defs = doc.createElementNS(svgNS, "defs"),
i,
a,
queueLen,
storageLen,
storageContext,
renderItem,
el,
settings = {},
text,
fontStyle,
clipId = 0;
svg.setAttribute("version", "1.1");
svg.setAttribute("baseProfile", "full");
svg.setAttribute("viewBox", "0 0 " + Math.max(zStack.ctx.width, options.width) + " " + Math.max(zStack.ctx.height, options.height));
svg.setAttribute("width", Math.max(zStack.ctx.width, options.width) + "px");
svg.setAttribute("height", Math.max(zStack.ctx.height, options.height) + "px");
svg.setAttribute("preserveAspectRatio", "none");
svg.appendChild(defs);
for (i = 0, queueLen = queue.length; i < queueLen; i+=1){
storageContext = queue.splice(0, 1)[0];
storageContext.canvasPosition = storageContext.canvasPosition || {};
//this.canvasRenderContext(storageContext,parentctx);
/*
if (storageContext.clip){
ctx.save();
ctx.beginPath();
// console.log(storageContext);
ctx.rect(storageContext.clip.left, storageContext.clip.top, storageContext.clip.width, storageContext.clip.height);
ctx.clip();
}*/
if (storageContext.ctx.storage){
for (a = 0, storageLen = storageContext.ctx.storage.length; a < storageLen; a+=1){
renderItem = storageContext.ctx.storage[a];
switch(renderItem.type){
case "variable":
settings[renderItem.name] = renderItem['arguments'];
break;
case "function":
if (renderItem.name === "fillRect") {
el = doc.createElementNS(svgNS, "rect");
el.setAttribute("x", renderItem['arguments'][0]);
el.setAttribute("y", renderItem['arguments'][1]);
el.setAttribute("width", renderItem['arguments'][2]);
el.setAttribute("height", renderItem['arguments'][3]);
el.setAttribute("fill", settings.fillStyle);
svg.appendChild(el);
} else if(renderItem.name === "fillText") {
el = doc.createElementNS(svgNS, "text");
fontStyle = settings.font.split(" ");
el.style.fontVariant = fontStyle.splice(0, 1)[0];
el.style.fontWeight = fontStyle.splice(0, 1)[0];
el.style.fontStyle = fontStyle.splice(0, 1)[0];
el.style.fontSize = fontStyle.splice(0, 1)[0];
el.setAttribute("x", renderItem['arguments'][1]);
el.setAttribute("y", renderItem['arguments'][2] - (parseInt(el.style.fontSize, 10) + 3));
el.setAttribute("fill", settings.fillStyle);
// TODO get proper baseline
el.style.dominantBaseline = "text-before-edge";
el.style.fontFamily = fontStyle.join(" ");
text = doc.createTextNode(renderItem['arguments'][0]);
el.appendChild(text);
svg.appendChild(el);
} else if(renderItem.name === "drawImage") {
if (renderItem['arguments'][8] > 0 && renderItem['arguments'][7]){
// TODO check whether even any clipping is necessary for this particular image
el = doc.createElementNS(svgNS, "clipPath");
el.setAttribute("id", "clipId" + clipId);
text = doc.createElementNS(svgNS, "rect");
text.setAttribute("x", renderItem['arguments'][5] );
text.setAttribute("y", renderItem['arguments'][6]);
text.setAttribute("width", renderItem['arguments'][3]);
text.setAttribute("height", renderItem['arguments'][4]);
el.appendChild(text);
defs.appendChild(el);
el = doc.createElementNS(svgNS, "image");
el.setAttributeNS(xlinkNS, "xlink:href", renderItem['arguments'][0].src);
el.setAttribute("width", renderItem['arguments'][0].width);
el.setAttribute("height", renderItem['arguments'][0].height);
el.setAttribute("x", renderItem['arguments'][5] - renderItem['arguments'][1]);
el.setAttribute("y", renderItem['arguments'][6] - renderItem['arguments'][2]);
el.setAttribute("clip-path", "url(#clipId" + clipId + ")");
// el.setAttribute("xlink:href", );
el.setAttribute("preserveAspectRatio", "none");
svg.appendChild(el);
clipId += 1;
/*
ctx.drawImage(
renderItem['arguments'][0],
renderItem['arguments'][1],
renderItem['arguments'][2],
renderItem['arguments'][3],
renderItem['arguments'][4],
renderItem['arguments'][5],
renderItem['arguments'][6],
renderItem['arguments'][7],
renderItem['arguments'][8]
);
*/
}
}
break;
default:
}
}
}
/*
if (storageContext.clip){
ctx.restore();
}
*/
}
h2clog("html2canvas: Renderer: SVG Renderer done - returning SVG DOM obj");
return svg;
}
//this.each(this.opts.renderOrder.split(" "),function(i,renderer){
//options.renderer = "svg";
switch(options.renderer.toLowerCase()){
case "canvas":
canvas = doc.createElement('canvas');
if (canvas.getContext){
h2clog("html2canvas: Renderer: using canvas renderer");
return canvasRenderer(parseQueue);
} else {
usingFlashcanvas = true;
h2clog("html2canvas: Renderer: canvas not available, using flashcanvas");
var script = doc.createElement("script");
script.src = options.flashcanvas;
script.onload = (function(script, func){
var intervalFunc;
if (script.onload === undefined) {
// IE lack of support for script onload
if( script.onreadystatechange !== undefined ) {
intervalFunc = function() {
if (script.readyState !== "loaded" && script.readyState !== "complete") {
window.setTimeout( intervalFunc, 250 );
} else {
// it is loaded
func();
}
};
window.setTimeout( intervalFunc, 250 );
} else {
h2clog("html2canvas: Renderer: Can't track when flashcanvas is loaded");
}
} else {
return func;
}
})(script, function(){
if (typeof window.FlashCanvas !== "undefined") {
h2clog("html2canvas: Renderer: Flashcanvas initialized");
window.FlashCanvas.initElement( canvas );
canvasRenderer(parseQueue);
}
});
doc.body.appendChild( script );
return canvas;
}
break;
case "svg":
if (doc.createElementNS){
h2clog("html2canvas: Renderer: using SVG renderer");
return svgRenderer(parseQueue);
}
break;
}
//});
return this;
}; };

9
src/Util.js
View File

@ -30,15 +30,17 @@ html2canvas = function( elements, opts ) {
// render options // render options
flashcanvas: undefined, // path to flashcanvas
width: null, width: null,
height: null, height: null,
renderer: "canvas",
taintTest: true // do a taint test with all images before applying to canvas taintTest: true // do a taint test with all images before applying to canvas
}; };
options = _html2canvas.Util.Extend(opts, options); options = _html2canvas.Util.Extend(opts, options);
options.renderer = options.renderer || html2canvas.Renderer.Canvas( options );
_html2canvas.logging = options.logging; _html2canvas.logging = options.logging;
options.complete = function( images ) { options.complete = function( images ) {
@ -82,3 +84,8 @@ html2canvas = function( elements, opts ) {
log: h2clog log: h2clog
}; };
}; };
html2canvas.log = h2clog; // for renderers
html2canvas.Renderer = {
Canvas: undefined // We are assuming this will be used
};

206
src/renderers/SVG.js Normal file
View File

@ -0,0 +1,206 @@
/*
html2canvas @VERSION@ <http://html2canvas.hertzen.com>
Copyright (c) 2011 Niklas von Hertzen. All rights reserved.
http://www.twitter.com/niklasvh
Released under MIT License
*/
// WARNING THIS file is outdated, and hasn't been tested in quite a while
html2canvas.Renderer.SVG = function( options ) {
options = options || {};
var doc = document,
svgNS = "http://www.w3.org/2000/svg",
svg = doc.createElementNS(svgNS, "svg"),
xlinkNS = "http://www.w3.org/1999/xlink",
defs = doc.createElementNS(svgNS, "defs"),
i,
a,
queueLen,
storageLen,
storageContext,
renderItem,
el,
settings = {},
text,
fontStyle,
clipId = 0,
methods;
methods = {
_create: function( zStack, options, doc, queue, _html2canvas ) {
svg.setAttribute("version", "1.1");
svg.setAttribute("baseProfile", "full");
svg.setAttribute("viewBox", "0 0 " + Math.max(zStack.ctx.width, options.width) + " " + Math.max(zStack.ctx.height, options.height));
svg.setAttribute("width", Math.max(zStack.ctx.width, options.width) + "px");
svg.setAttribute("height", Math.max(zStack.ctx.height, options.height) + "px");
svg.setAttribute("preserveAspectRatio", "none");
svg.appendChild(defs);
for (i = 0, queueLen = queue.length; i < queueLen; i+=1){
storageContext = queue.splice(0, 1)[0];
storageContext.canvasPosition = storageContext.canvasPosition || {};
//this.canvasRenderContext(storageContext,parentctx);
/*
if (storageContext.clip){
ctx.save();
ctx.beginPath();
// console.log(storageContext);
ctx.rect(storageContext.clip.left, storageContext.clip.top, storageContext.clip.width, storageContext.clip.height);
ctx.clip();
}*/
if (storageContext.ctx.storage){
for (a = 0, storageLen = storageContext.ctx.storage.length; a < storageLen; a+=1){
renderItem = storageContext.ctx.storage[a];
switch(renderItem.type){
case "variable":
settings[renderItem.name] = renderItem['arguments'];
break;
case "function":
if (renderItem.name === "fillRect") {
el = doc.createElementNS(svgNS, "rect");
el.setAttribute("x", renderItem['arguments'][0]);
el.setAttribute("y", renderItem['arguments'][1]);
el.setAttribute("width", renderItem['arguments'][2]);
el.setAttribute("height", renderItem['arguments'][3]);
el.setAttribute("fill", settings.fillStyle);
svg.appendChild(el);
} else if(renderItem.name === "fillText") {
el = doc.createElementNS(svgNS, "text");
fontStyle = settings.font.split(" ");
el.style.fontVariant = fontStyle.splice(0, 1)[0];
el.style.fontWeight = fontStyle.splice(0, 1)[0];
el.style.fontStyle = fontStyle.splice(0, 1)[0];
el.style.fontSize = fontStyle.splice(0, 1)[0];
el.setAttribute("x", renderItem['arguments'][1]);
el.setAttribute("y", renderItem['arguments'][2] - (parseInt(el.style.fontSize, 10) + 3));
el.setAttribute("fill", settings.fillStyle);
// TODO get proper baseline
el.style.dominantBaseline = "text-before-edge";
el.style.fontFamily = fontStyle.join(" ");
text = doc.createTextNode(renderItem['arguments'][0]);
el.appendChild(text);
svg.appendChild(el);
} else if(renderItem.name === "drawImage") {
if (renderItem['arguments'][8] > 0 && renderItem['arguments'][7]){
// TODO check whether even any clipping is necessary for this particular image
el = doc.createElementNS(svgNS, "clipPath");
el.setAttribute("id", "clipId" + clipId);
text = doc.createElementNS(svgNS, "rect");
text.setAttribute("x", renderItem['arguments'][5] );
text.setAttribute("y", renderItem['arguments'][6]);
text.setAttribute("width", renderItem['arguments'][3]);
text.setAttribute("height", renderItem['arguments'][4]);
el.appendChild(text);
defs.appendChild(el);
el = doc.createElementNS(svgNS, "image");
el.setAttributeNS(xlinkNS, "xlink:href", renderItem['arguments'][0].src);
el.setAttribute("width", renderItem['arguments'][0].width);
el.setAttribute("height", renderItem['arguments'][0].height);
el.setAttribute("x", renderItem['arguments'][5] - renderItem['arguments'][1]);
el.setAttribute("y", renderItem['arguments'][6] - renderItem['arguments'][2]);
el.setAttribute("clip-path", "url(#clipId" + clipId + ")");
// el.setAttribute("xlink:href", );
el.setAttribute("preserveAspectRatio", "none");
svg.appendChild(el);
clipId += 1;
/*
ctx.drawImage(
renderItem['arguments'][0],
renderItem['arguments'][1],
renderItem['arguments'][2],
renderItem['arguments'][3],
renderItem['arguments'][4],
renderItem['arguments'][5],
renderItem['arguments'][6],
renderItem['arguments'][7],
renderItem['arguments'][8]
);
*/
}
}
break;
default:
}
}
}
/*
if (storageContext.clip){
ctx.restore();
}
*/
}
h2clog("html2canvas: Renderer: SVG Renderer done - returning SVG DOM obj");
return svg;
}
};
return methods;
};

225
src/renderers/canvas.js Normal file
View File

@ -0,0 +1,225 @@
/*
html2canvas @VERSION@ <http://html2canvas.hertzen.com>
Copyright (c) 2011 Niklas von Hertzen. All rights reserved.
http://www.twitter.com/niklasvh
Released under MIT License
*/
html2canvas.Renderer.Canvas = function( options ) {
options = options || {};
var doc = document,
canvas = options.canvas || doc.createElement('canvas'),
usingFlashcanvas = false,
_createCalled = false,
canvasReadyToDraw = false,
methods,
flashMaxSize = 2880; // flash bitmap limited to 2880x2880px // http://stackoverflow.com/questions/2033792/argumenterror-error-2015-invalid-bitmapdata
if (canvas.getContext){
html2canvas.log("html2canvas: Renderer: using canvas renderer");
canvasReadyToDraw = true;
} else if ( options.flashcanvas !== undefined ){
usingFlashcanvas = true;
html2canvas.log("html2canvas: Renderer: canvas not available, using flashcanvas");
var script = doc.createElement("script");
script.src = options.flashcanvas;
script.onload = (function(script, func){
var intervalFunc;
if (script.onload === undefined) {
// IE lack of support for script onload
if( script.onreadystatechange !== undefined ) {
intervalFunc = function() {
if (script.readyState !== "loaded" && script.readyState !== "complete") {
window.setTimeout( intervalFunc, 250 );
} else {
// it is loaded
func();
}
};
window.setTimeout( intervalFunc, 250 );
} else {
html2canvas.log("html2canvas: Renderer: Can't track when flashcanvas is loaded");
}
} else {
return func;
}
})(script, function(){
if (typeof window.FlashCanvas !== "undefined") {
html2canvas.log("html2canvas: Renderer: Flashcanvas initialized");
window.FlashCanvas.initElement( canvas );
canvasReadyToDraw = true;
if ( _createCalled !== false ) {
methods._create.apply( null, _createCalled );
}
}
});
doc.body.appendChild( script );
}
methods = {
_create: function( zStack, options, doc, queue, _html2canvas ) {
if ( !canvasReadyToDraw ) {
_createCalled = arguments;
return canvas;
}
var ctx = canvas.getContext("2d"),
storageContext,
i,
queueLen,
a,
newCanvas,
bounds,
testCanvas = document.createElement("canvas"),
hasCTX = ( testCanvas.getContext !== undefined ),
storageLen,
renderItem,
testctx = ( hasCTX ) ? testCanvas.getContext("2d") : {},
safeImages = [],
fstyle;
canvas.width = canvas.style.width = (!usingFlashcanvas) ? options.width || zStack.ctx.width : Math.min(flashMaxSize, (options.width || zStack.ctx.width) );
canvas.height = canvas.style.height = (!usingFlashcanvas) ? options.height || zStack.ctx.height : Math.min(flashMaxSize, (options.height || zStack.ctx.height) );
fstyle = ctx.fillStyle;
ctx.fillStyle = zStack.backgroundColor;
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = fstyle;
for (i = 0, queueLen = queue.length; i < queueLen; i+=1){
storageContext = queue.splice(0, 1)[0];
storageContext.canvasPosition = storageContext.canvasPosition || {};
//this.canvasRenderContext(storageContext,parentctx);
// set common settings for canvas
ctx.textBaseline = "bottom";
if (storageContext.clip){
ctx.save();
ctx.beginPath();
// console.log(storageContext);
ctx.rect(storageContext.clip.left, storageContext.clip.top, storageContext.clip.width, storageContext.clip.height);
ctx.clip();
}
if (storageContext.ctx.storage){
for (a = 0, storageLen = storageContext.ctx.storage.length; a < storageLen; a+=1){
renderItem = storageContext.ctx.storage[a];
switch(renderItem.type){
case "variable":
ctx[renderItem.name] = renderItem['arguments'];
break;
case "function":
if (renderItem.name === "fillRect") {
if (!usingFlashcanvas || renderItem['arguments'][0] + renderItem['arguments'][2] < flashMaxSize && renderItem['arguments'][1] + renderItem['arguments'][3] < flashMaxSize) {
ctx.fillRect.apply( ctx, renderItem['arguments'] );
}
}else if(renderItem.name === "fillText") {
if (!usingFlashcanvas || renderItem['arguments'][1] < flashMaxSize && renderItem['arguments'][2] < flashMaxSize) {
ctx.fillText.apply( ctx, renderItem['arguments'] );
}
}else if(renderItem.name === "drawImage") {
if (renderItem['arguments'][8] > 0 && renderItem['arguments'][7]){
if ( hasCTX && options.taintTest ) {
if ( safeImages.indexOf( renderItem['arguments'][ 0 ].src ) === -1 ) {
testctx.drawImage( renderItem['arguments'][ 0 ], 0, 0 );
try {
testctx.getImageData( 0, 0, 1, 1 );
} catch(e) {
testCanvas = doc.createElement("canvas");
testctx = testCanvas.getContext("2d");
continue;
}
safeImages.push( renderItem['arguments'][ 0 ].src );
}
}
ctx.drawImage.apply( ctx, renderItem['arguments'] );
}
}
break;
default:
}
}
}
if (storageContext.clip){
ctx.restore();
}
}
h2clog("html2canvas: Renderer: Canvas renderer done - returning canvas obj");
queueLen = options.elements.length;
if (queueLen === 1) {
if (typeof options.elements[ 0 ] === "object" && options.elements[ 0 ].nodeName !== "BODY" && usingFlashcanvas === false) {
// crop image to the bounds of selected (single) element
bounds = _html2canvas.Util.Bounds( options.elements[ 0 ] );
newCanvas = doc.createElement('canvas');
newCanvas.width = bounds.width;
newCanvas.height = bounds.height;
ctx = newCanvas.getContext("2d");
ctx.drawImage( canvas, bounds.left, bounds.top, bounds.width, bounds.height, 0, 0, bounds.width, bounds.height );
canvas = null;
return newCanvas;
}
} /*else {
// TODO clip and resize multiple elements
for ( i = 0; i < queueLen; i+=1 ) {
if (options.elements[ i ] instanceof Element) {
}
}
}
*/
return canvas;
}
}
return methods;
};

2
tests/test.js
View File

@ -8,7 +8,7 @@
(function(document, window) { (function(document, window) {
var scrStart = '<script type="text/javascript" src="', scrEnd = '"></script>'; var scrStart = '<script type="text/javascript" src="', scrEnd = '"></script>';
document.write(scrStart + '../external/jquery-1.6.2.js' + scrEnd); document.write(scrStart + '../external/jquery-1.6.2.js' + scrEnd);
var html2canvas = ['Core', 'Generate', 'Parse', 'Preload', 'Queue', 'Renderer', 'Util', 'plugins/jquery.plugin.html2canvas'], i; var html2canvas = ['Core', 'Generate', 'Parse', 'Preload', 'Queue', 'Renderer', 'Util', 'renderers/Canvas', 'plugins/jquery.plugin.html2canvas'], i;
for (i = 0; i < html2canvas.length; ++i) { for (i = 0; i < html2canvas.length; ++i) {
document.write(scrStart + '../src/' + html2canvas[i] + '.js' + scrEnd); document.write(scrStart + '../src/' + html2canvas[i] + '.js' + scrEnd);
} }