html2canvas/tests/test.js

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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
*/
var h2cSelector, h2cOptions;
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(function(document, window) {
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function appendScript(src) {
document.write('<script type="text/javascript" src="' + src + '.js?' + Math.random() + '"></script>');
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}
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var sources = ['log', 'punycode/punycode', 'core', 'nodecontainer', 'stackingcontext', 'textcontainer', 'support', 'imagecontainer', 'dummyimagecontainer', 'proxyimagecontainer', 'gradientcontainer',
'lineargradientcontainer', 'webkitgradientcontainer', 'svgcontainer', 'svgnodecontainer', 'imageloader', 'nodeparser', 'font', 'fontmetrics', 'renderer', 'promise', 'xhr', 'framecontainer', 'renderers/canvas'];
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['/tests/assets/jquery-1.6.2'].concat(window.location.search === "?selenium" ? ['/dist/html2canvas'] : sources.map(function(src) { return '/src/' + src; })).forEach(appendScript);
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appendScript('/dist/html2canvas.svg');
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window.onload = function() {
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(function( $ ){
$.fn.html2canvas = function(options) {
if (options && options.profile && window.console && window.console.profile && window.location.search !== "?selenium2") {
window.console.profile();
}
var date = new Date(),
$message = null,
timeoutTimer = false,
timer = date.getTime();
options = options || {};
var promise = html2canvas(this, options);
promise['catch'](function(err) {
console.log("html2canvas threw an error", err);
});
promise.then(function(canvas) {
var $canvas = $(canvas),
finishTime = new Date();
if (options && options.profile && window.console && window.console.profileEnd) {
window.console.profileEnd();
}
$canvas.addClass("html2canvas")
.css({
position: 'absolute',
left: 0,
top: 0
}).appendTo(document.body);
if (window.location.search !== "?selenium") {
$canvas.siblings().toggle();
$(window).click(function(){
$canvas.toggle().siblings().toggle();
throwMessage("Canvas Render " + ($canvas.is(':visible') ? "visible" : "hidden"));
});
throwMessage('Screenshot created in '+ ((finishTime.getTime()-timer)) + " ms<br />",4000);
} else {
$canvas.css('display', 'none');
}
// test if canvas is read-able
try {
$canvas[0].toDataURL();
} catch(e) {
if ($canvas[0].nodeName.toLowerCase() === "canvas") {
// TODO, maybe add a bit less offensive way to present this, but still something that can easily be noticed
window.alert("Canvas is tainted, unable to read data");
}
}
});
function throwMessage(msg,duration){
window.clearTimeout(timeoutTimer);
timeoutTimer = window.setTimeout(function(){
$message.fadeOut(function(){
$message.remove();
$message = null;
});
},duration || 2000);
if ($message)
$message.remove();
$message = $('<div />').html(msg).css({
margin:0,
padding:10,
background: "#000",
opacity:0.7,
position:"fixed",
top:10,
right:10,
fontFamily: 'Tahoma',
color:'#fff',
fontSize:12,
borderRadius:12,
width:'auto',
height:'auto',
textAlign:'center',
textDecoration:'none',
display:'none'
}).appendTo(document.body).fadeIn();
log(msg);
}
};
})(jQuery);
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h2cSelector = [document.documentElement];
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if (window.setUp) {
window.setUp();
}
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setTimeout(function() {
$(h2cSelector).html2canvas($.extend({
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logging: true,
profile: true,
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proxy: "http://html2canvas.appspot.com/query",
useCORS: false
}, h2cOptions));
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}, 100);
};
}(document, window));