This commit is contained in:
Niklas von Hertzen 2012-03-08 11:35:12 +02:00
commit 0d35571bbf
5 changed files with 469 additions and 154 deletions

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@ -3,127 +3,240 @@
Copyright (c) 2011 Niklas von Hertzen. All rights reserved. Copyright (c) 2011 Niklas von Hertzen. All rights reserved.
http://www.twitter.com/niklasvh http://www.twitter.com/niklasvh
Contributor(s):
Niklas von Hertzen <http://www.twitter.com/niklasvh>
André Fiedler <http://www.twitter.com/sonnenkiste>
Released under MIT License Released under MIT License
*/ */
(function(){
_html2canvas.Generate = {}; _html2canvas.Generate = {};
var reGradients = [
/^(-webkit-linear-gradient)\(([a-z\s]+)([\w\d\.\s,%\(\)]+)\)$/,
/^(-o-linear-gradient)\(([a-z\s]+)([\w\d\.\s,%\(\)]+)\)$/,
/^(-webkit-gradient)\((linear|radial),\s((?:\d{1,3}%?)\s(?:\d{1,3}%?),\s(?:\d{1,3}%?)\s(?:\d{1,3}%?))([\w\d\.\s,%\(\)-]+)\)$/,
/^(-moz-linear-gradient)\(((?:\d{1,3}%?)\s(?:\d{1,3}%?))([\w\d\.\s,%\(\)]+)\)$/
];
/*
* TODO: Add IE10 vendor prefix (-ms) support
* TODO: Add W3C gradient (linear-gradient) support
* TODO: Add radial gradient parsing
* TODO: Maybe some RegExp optimizations are possible ;o)
*/
_html2canvas.Generate.parseGradient = function(css, bounds) {
var gradient, i, len = reGradients.length, m1, stop, m2, m2Len, step, m3;
for(i = 0; i < len; i+=1){
m1 = css.match(reGradients[i]);
if(m1) break;
}
if(m1) {
switch(m1[1]) {
case '-webkit-linear-gradient':
case '-o-linear-gradient':
gradient = {
type: 'linear',
x0: null,
y0: null,
x1: null,
y1: null,
colorStops: []
};
// get coordinates
m2 = m1[2].match(/\w+/g);
if(m2){
m2Len = m2.length;
for(i = 0; i < m2Len; i+=1){
switch(m2[i]) {
case 'top':
gradient.y0 = 0;
gradient.y1 = bounds.height;
break;
case 'right':
gradient.x0 = bounds.width;
gradient.x1 = 0;
break;
case 'bottom':
gradient.y0 = bounds.height;
gradient.y1 = 0;
break;
case 'left':
gradient.x0 = 0;
gradient.x1 = bounds.width;
break;
}
}
}
if(gradient.x0 === null && gradient.x1 === null){ // center
gradient.x0 = gradient.x1 = bounds.width / 2;
}
if(gradient.y0 === null && gradient.y1 === null){ // center
gradient.y0 = gradient.y1 = bounds.height / 2;
}
// get colors and stops
m2 = m1[3].match(/((?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\)(?:\s\d{1,3}(?:%|px))?)+/g);
if(m2){
m2Len = m2.length;
step = 1 / Math.max(m2Len - 1, 1);
for(i = 0; i < m2Len; i+=1){
m3 = m2[i].match(/((?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\))\s*(\d{1,3})?(%|px)?/);
if(m3[2]){
stop = parseFloat(m3[2]);
if(m3[3] === '%'){
stop /= 100;
} else { // px - stupid opera
stop /= bounds.width;
}
} else {
stop = i * step;
}
gradient.colorStops.push({
color: m3[1],
stop: stop
});
}
}
break;
case '-webkit-gradient':
gradient = {
type: m1[2],
x0: 0,
y0: 0,
x1: 0,
y1: 0,
colorStops: []
};
// get coordinates
m2 = m1[3].match(/(\d{1,3})%?\s(\d{1,3})%?,\s(\d{1,3})%?\s(\d{1,3})%?/);
if(m2){
gradient.x0 = (m2[1] * bounds.width) / 100;
gradient.y0 = (m2[2] * bounds.height) / 100;
gradient.x1 = (m2[3] * bounds.width) / 100;
gradient.y1 = (m2[4] * bounds.height) / 100;
}
// get colors and stops
m2 = m1[4].match(/((?:from|to|color-stop)\((?:[0-9\.]+,\s)?(?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\)\))+/g);
if(m2){
m2Len = m2.length;
for(i = 0; i < m2Len; i+=1){
m3 = m2[i].match(/(from|to|color-stop)\(([0-9\.]+)?(?:,\s)?((?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\))\)/);
stop = parseFloat(m3[2]);
if(m3[1] === 'from') stop = 0.0;
if(m3[1] === 'to') stop = 1.0;
gradient.colorStops.push({
color: m3[3],
stop: stop
});
}
}
break;
case '-moz-linear-gradient':
gradient = {
type: 'linear',
x0: 0,
y0: 0,
x1: 0,
y1: 0,
colorStops: []
};
// get coordinates
m2 = m1[2].match(/(\d{1,3})%?\s(\d{1,3})%?/);
// m2[1] == 0% -> left
// m2[1] == 50% -> center
// m2[1] == 100% -> right
// m2[2] == 0% -> top
// m2[2] == 50% -> center
// m2[2] == 100% -> bottom
if(m2){
gradient.x0 = (m2[1] * bounds.width) / 100;
gradient.y0 = (m2[2] * bounds.height) / 100;
gradient.x1 = bounds.width - gradient.x0;
gradient.y1 = bounds.height - gradient.y0;
}
// get colors and stops
m2 = m1[3].match(/((?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\)(?:\s\d{1,3}%)?)+/g);
if(m2){
m2Len = m2.length;
step = 1 / Math.max(m2Len - 1, 1);
for(i = 0; i < m2Len; i+=1){
m3 = m2[i].match(/((?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\))\s*(\d{1,3})?(%)?/);
if(m3[2]){
stop = parseFloat(m3[2]);
if(m3[3]){ // percentage
stop /= 100;
}
} else {
stop = i * step;
}
gradient.colorStops.push({
color: m3[1],
stop: stop
});
}
}
break;
}
}
return gradient;
};
_html2canvas.Generate.Gradient = function(src, bounds) { _html2canvas.Generate.Gradient = function(src, bounds) {
var canvas = document.createElement('canvas'), var canvas = document.createElement('canvas'),
ctx = canvas.getContext('2d'), ctx = canvas.getContext('2d'),
tmp, gradient, lingrad, i, len, img;
p0 = 0,
p1 = 0,
p2 = 0,
p3 = 0,
steps = [],
position,
i,
len,
lingrad,
increment,
p,
img;
canvas.width = bounds.width; canvas.width = bounds.width;
canvas.height = bounds.height; canvas.height = bounds.height;
gradient = _html2canvas.Generate.parseGradient(src, bounds);
function getColors(input) {
var j = -1,
color = '',
chr;
while( j++ < input.length ) {
chr = input.charAt( j );
if (chr === ')') {
color += chr;
steps.push( color );
color = '';
j = input.indexOf(",", j) + 1;
if (j === 0) {
break;
}
// while (j++ < input.length && input.charAt( j ) !== ',') {}
} else {
color += chr;
}
}
}
if ( (tmp = src.match(/-webkit-linear-gradient\((.*)\)/)) !== null ) {
position = tmp[1].split( ",", 1 )[0];
getColors( tmp[1].substr( position.length + 2 ) );
position = position.split(' ');
for ( p = 0, len = position.length; p < len; p+=1 ) {
switch( position[ p ] ) {
case 'top':
p3 = bounds.height;
break;
case 'right':
p0 = bounds.width;
break;
case 'bottom':
p1 = bounds.height;
break;
case 'left':
p2 = bounds.width;
break;
}
}
} else if ( (tmp = src.match(/-webkit-gradient\(linear, (\d+)[%]{0,1} (\d+)[%]{0,1}, (\d+)[%]{0,1} (\d+)[%]{0,1}, from\((.*)\), to\((.*)\)\)/)) !== null ) {
p0 = (tmp[1] * bounds.width) / 100;
p1 = (tmp[2] * bounds.height) / 100;
p2 = (tmp[3] * bounds.width) / 100;
p3 = (tmp[4] * bounds.height) / 100;
steps.push(tmp[5]);
steps.push(tmp[6]);
} else if ( (tmp = src.match(/-moz-linear-gradient\((\d+)[%]{0,1} (\d+)[%]{0,1}, (.*)\)/)) !== null ) {
p0 = (tmp[1] * bounds.width) / 100;
p1 = (tmp[2] * bounds.width) / 100;
p2 = bounds.width - p0;
p3 = bounds.height - p1;
getColors( tmp[3] );
} else {
return;
}
lingrad = ctx.createLinearGradient( p0, p1, p2, p3 );
increment = 1 / (steps.length - 1);
for (i = 0, len = steps.length; i < len; i+=1) {
try {
lingrad.addColorStop(increment * i, steps[i]);
}
catch(e) {
h2clog(['failed to add color stop: ', e, '; tried to add: ', steps[i], '; stop: ', i, '; in: ', src]);
}
}
ctx.fillStyle = lingrad;
// draw shapes
ctx.fillRect(0, 0, bounds.width,bounds.height);
img = new Image(); img = new Image();
img.src = canvas.toDataURL();
if(gradient && gradient.type === 'linear'){
lingrad = ctx.createLinearGradient(gradient.x0, gradient.y0, gradient.x1, gradient.y1);
for (i = 0, len = gradient.colorStops.length; i < len; i+=1) {
try {
lingrad.addColorStop(gradient.colorStops[i].stop, gradient.colorStops[i].color);
}
catch(e) {
h2clog(['failed to add color stop: ', e, '; tried to add: ', gradient.colorStops[i], '; stop: ', i, '; in: ', src]);
}
}
ctx.fillStyle = lingrad;
ctx.fillRect(0, 0, bounds.width, bounds.height);
img.src = canvas.toDataURL();
} else if(gradient && gradient.type === 'radial'){
// TODO: implement radial gradient generation
h2clog('No radial gradient support implemented');
}
return img; return img;
}; };
_html2canvas.Generate.ListAlpha = function(number) { _html2canvas.Generate.ListAlpha = function(number) {
@ -160,3 +273,5 @@ _html2canvas.Generate.ListRoman = function(number) {
return roman; return roman;
}; };
})();

View File

@ -54,6 +54,55 @@
.linearGradient2 { .linearGradient2 {
background: -webkit-gradient(linear, 0% 0, 0% 100%, from(rgb(252, 252, 252)), to(rgb(232, 232, 232))); background: -webkit-gradient(linear, 0% 0, 0% 100%, from(rgb(252, 252, 252)), to(rgb(232, 232, 232)));
} }
.linearGradient3 {
/* FF 3.6+ */
background: -moz-linear-gradient(left, #ff0000, #ffff00, #00ff00);
/* Chrome,Safari4+ */
background: -webkit-gradient(linear, left top, right top, color-stop(#ff0000), color-stop(#ffff00), color-stop(#00ff00));
/* Chrome 10+, Safari 5.1+ */
background: -webkit-linear-gradient(left, #ff0000, #ffff00, #00ff00);
/* Opera 11.10+ */
background: -o-linear-gradient(left, #ff0000, #ffff00, #00ff00);
/* IE 10+ */
background: -ms-linear-gradient(left, #ff0000, #ffff00, #00ff00);
/* W3C */
background: linear-gradient(left, #ff0000, #ffff00, #00ff00);
}
.linearGradient4 {
/* IE9 SVG */
background: url(data:image/svg+xml;base64,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);
/* FF 3.6+ */
background: -moz-linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%);
/* Chrome, Safari 4+ */
background: -webkit-gradient(linear, left top, right top, color-stop(0%, #cedbe9), color-stop(17%, #aac5de), color-stop(50%, #6199c7), color-stop(51%, #3a84c3), color-stop(59%, #419ad6), color-stop(71%, #4bb8f0), color-stop(84%, #3a8bc2), color-stop(100%, #26558b));
/* Chrome 10+, Safari 5.1+ */
background: -webkit-linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%);
/* Opera 11.10+ */
background: -o-linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%);
/* IE10+ */
background: -ms-linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%);
/* W3C */
background: linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%);
}
.linearGradient5 {
/* IE9 SVG */
background: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiA/Pgo8c3ZnIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgdmlld0JveD0iMCAwIDEgMSIgcHJlc2VydmVBc3BlY3RSYXRpbz0ibm9uZSI+CiAgPGxpbmVhckdyYWRpZW50IGlkPSJncmFkLXVjZ2ctZ2VuZXJhdGVkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjAlIiB5MT0iMCUiIHgyPSIwJSIgeTI9IjEwMCUiPgogICAgPHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iI2YwYjdhMSIgc3RvcC1vcGFjaXR5PSIxIi8+CiAgICA8c3RvcCBvZmZzZXQ9IjUwJSIgc3RvcC1jb2xvcj0iIzhjMzMxMCIgc3RvcC1vcGFjaXR5PSIxIi8+CiAgICA8c3RvcCBvZmZzZXQ9IjUxJSIgc3RvcC1jb2xvcj0iIzc1MjIwMSIgc3RvcC1vcGFjaXR5PSIxIi8+CiAgICA8c3RvcCBvZmZzZXQ9IjEwMCUiIHN0b3AtY29sb3I9IiNiZjZlNGUiIHN0b3Atb3BhY2l0eT0iMSIvPgogIDwvbGluZWFyR3JhZGllbnQ+CiAgPHJlY3QgeD0iMCIgeT0iMCIgd2lkdGg9IjEiIGhlaWdodD0iMSIgZmlsbD0idXJsKCNncmFkLXVjZ2ctZ2VuZXJhdGVkKSIgLz4KPC9zdmc+);
/* FF 3.6+ */
background: -moz-linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
/* Chrome, Safari 4+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #f0b7a1), color-stop(50%, #8c3310), color-stop(51%, #752201), color-stop(100%, #bf6e4e));
/* Chrome 10+, Safari 5.1+ */
background: -webkit-linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
/* Opera 11.10+ */
background: -o-linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
/* IE 10+ */
background: -ms-linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
/* W3C */
background: linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
}
</style> </style>
</head> </head>
@ -61,6 +110,9 @@
<div class="medium"> <div class="medium">
<div class="linearGradient">&nbsp;</div> <div class="linearGradient">&nbsp;</div>
<div class="linearGradient2">&nbsp;</div> <div class="linearGradient2">&nbsp;</div>
<div class="linearGradient3">&nbsp;</div>
<div class="linearGradient4">&nbsp;</div>
<div class="linearGradient5">&nbsp;</div>
</div> </div>

View File

@ -22,7 +22,8 @@
<script type="text/javascript" src="../../src/renderers/Canvas.js"></script> <script type="text/javascript" src="../../src/renderers/Canvas.js"></script>
<script src="unit/css.js"></script> <script src="unit/css.js"></script>
<!-- <script src="unit/utils.js"></script> --> <script src="unit/generate.js"></script>
<!-- <script src="unit/utils.js"></script> -->
<style> <style>
#borders div { #borders div {
@ -94,7 +95,7 @@
/* FF 3.6+ */ /* FF 3.6+ */
background: -moz-linear-gradient(left, #ff0000, #ffff00, #00ff00); background: -moz-linear-gradient(left, #ff0000, #ffff00, #00ff00);
/* Chrome,Safari4+ */ /* Chrome,Safari4+ */
background: -webkit-gradient(linear, left top, right top, color-stop(#ff0000), color-stop(#ffff00), color-stop(#00ff00)); background: -webkit-gradient(linear, left center, right center, color-stop(#ff0000), color-stop(#ffff00), color-stop(#00ff00));
/* Chrome 10+, Safari 5.1+ */ /* Chrome 10+, Safari 5.1+ */
background: -webkit-linear-gradient(left, #ff0000, #ffff00, #00ff00); background: -webkit-linear-gradient(left, #ff0000, #ffff00, #00ff00);
/* Opera 11.10+ */ /* Opera 11.10+ */
@ -110,7 +111,7 @@
/* FF 3.6+ */ /* FF 3.6+ */
background: -moz-linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%); background: -moz-linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%);
/* Chrome, Safari 4+ */ /* Chrome, Safari 4+ */
background: -webkit-gradient(linear, left top, right top, color-stop(0%, #cedbe9), color-stop(17%, #aac5de), color-stop(50%, #6199c7), color-stop(51%, #3a84c3), color-stop(59%, #419ad6), color-stop(71%, #4bb8f0), color-stop(84%, #3a8bc2), color-stop(100%, #26558b)); background: -webkit-gradient(linear, left center, right center, color-stop(0%, #cedbe9), color-stop(17%, #aac5de), color-stop(50%, #6199c7), color-stop(51%, #3a84c3), color-stop(59%, #419ad6), color-stop(71%, #4bb8f0), color-stop(84%, #3a8bc2), color-stop(100%, #26558b));
/* Chrome 10+, Safari 5.1+ */ /* Chrome 10+, Safari 5.1+ */
background: -webkit-linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%); background: -webkit-linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%);
/* Opera 11.10+ */ /* Opera 11.10+ */
@ -120,10 +121,25 @@
/* W3C */ /* W3C */
background: linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%); background: linear-gradient(left, #cedbe9 0%, #aac5de 17%, #6199c7 50%, #3a84c3 51%, #419ad6 59%, #4bb8f0 71%, #3a8bc2 84%, #26558b 100%);
} }
.linearGradient3 {
/* IE9 SVG */
background: url(data:image/svg+xml;base64,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);
/* FF 3.6+ */
background: -moz-linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
/* Chrome, Safari 4+ */
background: -webkit-gradient(linear, center top, center bottom, color-stop(0%, #f0b7a1), color-stop(50%, #8c3310), color-stop(51%, #752201), color-stop(100%, #bf6e4e));
/* Opera 11.10+ */
background: -o-linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
/* IE 10+ */
background: -ms-linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
/* W3C */
background: linear-gradient(top, #f0b7a1 0%, #8c3310 50%, #752201 51%, #bf6e4e 100%);
}
</style> </style>
<div id="backgroundGradients"> <div id="backgroundGradients">
<div class="linearGradientSimple"></div> <div class="linearGradientSimple"></div>
<div class="linearGradientWithStops"></div> <div class="linearGradientWithStops"></div>
<div class="linearGradient3"></div>
</div> </div>
</div> </div>
<!-- <!--

View File

@ -145,53 +145,6 @@ $(function() {
}); });
}); });
// TODO add backgroundPosition % tests // TODO add backgroundPosition % tests
propsToTest['background-gradient'] = ["backgroundImage"];
numDivs['background-gradient'] = $('#backgroundGradients div').length;
test('background-gradient', propsToTest['background-gradient'].length * numDivs['background-gradient'], function() {
$('#backgroundGradients div').each(function(i, el) {
$.each(propsToTest['background-gradient'], function(s, prop) {
var src, img, canvas, ctx, id, data, len, red, green, blue, overallColor = 0;
src = _html2canvas.Util.getCSS(el, prop);
if (!/^(-webkit|-o|-moz|-ms|linear)-/.test( src )) {
ok(true);
} else {
img = _html2canvas.Generate.Gradient(src, {
width: 50,
height: 50
});
canvas = document.createElement('canvas');
canvas.width = 50;
canvas.height = 50;
ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
id = ctx.getImageData(0, 0, 50, 50);
data = id.data;
len = data.length;
//console.log(img);
for (var i = 0; i < len; i += 4) {
red = data[i]; // red
green = data[i + 1]; // green
blue = data[i + 2]; // blue
// i+3 is alpha (the fourth element)
overallColor += (red + green + blue) / 3;
}
overallColor /= (len / 4);
QUnit.notEqual(overallColor, 255, 'No Background Gradient - CSS was ' + src);
}
});
});
});
}); });

View File

@ -0,0 +1,179 @@
// declare vars (preventing JSHint messages)
/* this breaks the testing for IE<9
var test = test || function(){},
QUnit = QUnit || {},
_html2canvas = _html2canvas || {};
*/
//module("Generate"); // <- overwrites predefined CSS-module ?
$(function() {
var propsToTest = {},
numDivs = {},
expected = {};
propsToTest['Generate.parseGradient'] = ["backgroundImage"];
numDivs['Generate.parseGradient'] = $('#backgroundGradients div').length;
expected['Generate.parseGradient'] = [
{
type: 'linear',
x0: 0,
y0: 35,
x1: 50,
y1: 35,
colorStops: [
{
color: "rgb(255, 0, 0)",
stop: 0
},
{
color: "rgb(255, 255, 0)",
stop: 0.5
},
{
color: "rgb(0, 255, 0)",
stop: 1
}
]
},
{
type: 'linear',
x0: 0,
y0: 35,
x1: 50,
y1: 35,
colorStops: [
{
color: "rgb(206, 219, 233)",
stop: 0
},
{
color: "rgb(170, 197, 222)",
stop: 0.17
},
{
color: "rgb(97, 153, 199)",
stop: 0.5
},
{
color: "rgb(58, 132, 195)",
stop: 0.51
},
{
color: "rgb(65, 154, 214)",
stop: 0.59
},
{
color: "rgb(75, 184, 240)",
stop: 0.71
},
{
color: "rgb(58, 139, 194)",
stop: 0.84
},
{
color: "rgb(38, 85, 139)",
stop: 1
}
]
},
{
type: "linear",
x0: 25,
y0: 0,
x1: 25,
y1: 70,
colorStops: [
{
color: "rgb(240, 183, 161)",
stop: 0
},
{
color: "rgb(140, 51, 16)",
stop: 0.5
},
{
color: "rgb(117, 34, 1)",
stop: 0.51
},
{
color: "rgb(191, 110, 78)",
stop: 1
}
]
}
];
test('Generate.parseGradient', propsToTest['Generate.parseGradient'].length * numDivs['Generate.parseGradient'], function() {
$('#backgroundGradients div').each(function(i, el) {
$.each(propsToTest['Generate.parseGradient'], function(s, prop) {
var src, gradient;
src = _html2canvas.Util.getCSS(el, prop);
if (/^(-webkit|-o|-moz|-ms|linear)-/.test(src)) {
gradient = _html2canvas.Generate.parseGradient(src, {
width: 50,
height: 70
});
//QUnit.deepEqual(gradient, expected['Generate.parseGradient'][i], 'Parsed gradient; got: ' + JSON.stringify(gradient));
QUnit.deepEqual(gradient, expected['Generate.parseGradient'][i], 'Parsed gradient with CSS: ' + src);
} else {
QUnit.ok(true, 'No CSS Background Gradient support');
}
});
});
});
propsToTest['Generate.Gradient'] = ["backgroundImage"];
numDivs['Generate.Gradient'] = $('#backgroundGradients div').length;
test('Generate.Gradient', propsToTest['Generate.Gradient'].length * numDivs['Generate.Gradient'], function() {
$('#backgroundGradients div').each(function(i, el) {
$.each(propsToTest['Generate.Gradient'], function(s, prop) {
var src, img, canvas, ctx, id, data, len, red, green, blue, overallColor = 0;
src = _html2canvas.Util.getCSS(el, prop);
if (/^(-webkit|-o|-moz|-ms|linear)-/.test(src)) {
img = _html2canvas.Generate.Gradient(src, {
width: 50,
height: 50
});
canvas = document.createElement('canvas');
canvas.width = 50;
canvas.height = 50;
ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
id = ctx.getImageData(0, 0, 50, 50);
data = id.data;
len = data.length;
//console.log(img);
for (var i = 0; i < len; i += 4) {
red = data[i]; // red
green = data[i + 1]; // green
blue = data[i + 2]; // blue
// i+3 is alpha (the fourth element)
overallColor += (red + green + blue) / 3;
}
overallColor /= (len / 4);
QUnit.notEqual(overallColor, 255, 'Background Gradient drawn with CSS: ' + src);
} else {
QUnit.ok(true, 'No CSS Background Gradient support');
}
});
});
});
});