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98 lines (78 loc) · 2.91 KB
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/*
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 = function( elements, opts ) {
var queue,
canvas,
options = {
// general
logging: false,
elements: elements,
// preload options
proxy: "http://html2canvas.appspot.com/",
timeout: 0, // no timeout
useCORS: false, // try to load images as CORS (where available), before falling back to proxy
allowTaint: false, // whether to allow images to taint the canvas, won't need proxy if set to true
// parse options
svgRendering: false, // use svg powered rendering where available (FF11+)
iframeDefault: "default",
ignoreElements: "IFRAME|OBJECT|PARAM",
useOverflow: true,
letterRendering: false,
// render options
flashcanvas: undefined, // path to flashcanvas
width: null,
height: null,
taintTest: true, // do a taint test with all images before applying to canvas
renderer: "Canvas"
}, renderer;
options = _html2canvas.Util.Extend(opts, options);
if (typeof options.renderer === "string" && _html2canvas.Renderer[options.renderer] !== undefined) {
options._renderer = _html2canvas.Renderer[options.renderer]( options );
} else if (typeof options.renderer === "function") {
options._renderer = options.renderer( options );
} else {
throw("Unknown renderer");
}
_html2canvas.logging = options.logging;
options.complete = function( images ) {
if (typeof options.onpreloaded === "function") {
if ( options.onpreloaded( images ) === false ) {
return;
}
}
queue = _html2canvas.Parse( images, options );
if (typeof options.onparsed === "function") {
if ( options.onparsed( queue ) === false ) {
return;
}
}
canvas = _html2canvas.Renderer( queue, options );
if (typeof options.onrendered === "function") {
options.onrendered( canvas );
}
};
// for pages without images, we still want this to be async, i.e. return methods before executing
window.setTimeout( function(){
_html2canvas.Preload( options );
}, 0 );
return {
render: function( queue, opts ) {
return _html2canvas.Renderer( queue, _html2canvas.Util.Extend(opts, options) );
},
parse: function( images, opts ) {
return _html2canvas.Parse( images, _html2canvas.Util.Extend(opts, options) );
},
preload: function( opts ) {
return _html2canvas.Preload( _html2canvas.Util.Extend(opts, options) );
},
log: h2clog
};
};
html2canvas.log = h2clog; // for renderers
html2canvas.Renderer = {
Canvas: undefined // We are assuming this will be used
};