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"-moz-linear-gradient parsing"

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This commit is contained in:
André Fiedler 2012-03-06 21:11:01 +00:00
parent f387267c0f
commit 51b2c01b0c
1 changed files with 69 additions and 2 deletions
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71
src/Generate.js
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@ -15,17 +15,24 @@ _html2canvas.Generate = {};
// -webkit-linear-gradient(left, rgb(206, 219, 233) 0%, rgb(170, 197, 222) 17%, rgb(97, 153, 199) 50%, rgb(58, 132, 195) 51%, rgb(65, 154, 214) 59%, rgb(75, 184, 240) 71%, rgb(58, 139, 194) 84%, rgb(38, 85, 139) 100%)
// -webkit-gradient(linear, 0% 0, 0% 100%, from(rgb(252, 252, 252)), to(rgb(232, 232, 232)))
// -webkit-gradient(linear, 0% 0%, 0% 100%, from(rgb(240, 183, 161)), color-stop(0.5, rgb(140, 51, 16)), color-stop(0.51, rgb(117, 34, 1)), to(rgb(191, 110, 78)))
// -moz-linear-gradient(100% 0%, rgb(255, 0, 0), rgb(0, 0, 255), rgb(186, 218, 85), rgba(0, 0, 255, 0.5))
// -moz-linear-gradient(0% 50%, rgb(255, 0, 0), rgb(255, 255, 0), rgb(0, 255, 0))
// -moz-linear-gradient(0% 50%, rgb(206, 219, 233) 0%, rgb(170, 197, 222) 17%, rgb(97, 153, 199) 50%, rgb(58, 132, 195) 51%, rgb(65, 154, 214) 59%, rgb(75, 184, 240) 71%, rgb(58, 139, 194) 84%, rgb(38, 85, 139) 100%)
// -moz-linear-gradient(50% 0%, rgb(240, 183, 161) 0%, rgb(140, 51, 16) 50%, rgb(117, 34, 1) 51%, rgb(191, 110, 78) 100%)
var reGradients = [
/^(-webkit-linear-gradient)\(([a-z\s]+)((?:,\s(?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\)(?:\s\d{1,3}%)?)+)\)$/,
/^(-webkit-gradient)\((linear|radial),\s((?:\d{1,3}%?)\s(?:\d{1,3}%?),\s(?:\d{1,3}%?)\s(?:\d{1,3}%?))((?:,\s(?:from|to|color-stop)\((?:[0-9\.]+,\s)?(?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\)\))+)\)$/
/^(-webkit-gradient)\((linear|radial),\s((?:\d{1,3}%?)\s(?:\d{1,3}%?),\s(?:\d{1,3}%?)\s(?:\d{1,3}%?))((?:,\s(?:from|to|color-stop)\((?:[0-9\.]+,\s)?(?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\)\))+)\)$/,
/^(-moz-linear-gradient)\(((?:\d{1,3}%?)\s(?:\d{1,3}%?))((?:,\s(?:rgb|rgba)\(\d{1,3},\s\d{1,3},\s\d{1,3}(?:,\s[0-9\.]+)?\)(?:\s\d{1,3}%)?)+)\)$/
];
// ["-webkit-linear-gradient(left top, rgb(255, 0, 0), rgb(0, 0, 255), rgb(186, 218, 85), rgba(0, 0, 255, 0.496094))", "-webkit-linear-gradient", "left top", ", rgb(255, 0, 0), rgb(0, 0, 255), rgb(186, 218, 85), rgba(0, 0, 255, 0.496094)"]
// ["-webkit-linear-gradient(left, rgb(206, 219, 233) 0%, rgb(170, 197, 222) 17%, rgb(97, 153, 199) 50%, rgb(58, 132, 195) 51%, rgb(65, 154, 214) 59%, rgb(75, 184, 240) 71%, rgb(58, 139, 194) 84%, rgb(38, 85, 139) 100%)", "-webkit-linear-gradient", "left", ", rgb(206, 219, 233) 0%, rgb(170, 197, 222) 17%, rgb(97, 153, 199) 50%, rgb(58, 132, 195) 51%, rgb(65, 154, 214) 59%, rgb(75, 184, 240) 71%, rgb(58, 139, 194) 84%, rgb(38, 85, 139) 100%"]
// ["-webkit-gradient(linear, 0% 0, 0% 100%, from(rgb(252, 252, 252)), to(rgb(232, 232, 232)))", "-webkit-gradient", "linear", "0% 0", "0% 100%", ", from(rgb(252, 252, 252)), to(rgb(232, 232, 232))"]
// ["-webkit-gradient(linear, 0% 0%, 0% 100%, from(rgb(240, 183, 161)), color-stop(0.5, rgb(140, 51, 16)), color-stop(0.51, rgb(117, 34, 1)), to(rgb(191, 110, 78)))", "-webkit-gradient", "linear", "0% 0%, 0% 100%", ", from(rgb(240, 183, 161)), color-stop(0.5, rgb(140, 51, 16)), color-stop(0.51, rgb(117, 34, 1)), to(rgb(191, 110, 78))"]
// ["-moz-linear-gradient(0%...55, 0), rgb(0, 255, 0))", "-moz-linear-gradient", "0% 50%", ", rgb(255, 0, 0), rgb(255, 255, 0), rgb(0, 255, 0)"]
// ["-moz-linear-gradient(0%... rgb(38, 85, 139) 100%)", "-moz-linear-gradient", "0% 50%", ", rgb(206, 219, 233) 0%..., rgb(38, 85, 139) 100%"]
// ["-moz-linear-gradient(50...rgb(191, 110, 78) 100%)", "-moz-linear-gradient", "50% 0%", ", rgb(240, 183, 161) 0%... rgb(191, 110, 78) 100%"]
// ["-moz-linear-gradient(0%...55, 0), rgb(0, 255, 0))", "-moz-linear-gradient", "0% 50%", ", rgb(255, 0, 0), rgb(255, 255, 0), rgb(0, 255, 0)"]
_html2canvas.Generate.parseGradient = function(css, bounds) {
var gradient, i, len = reGradients.length, m1, stop, m2, m2Len, step, m3;
@ -35,6 +42,8 @@ _html2canvas.Generate.parseGradient = function(css, bounds) {
if(m1) break;
}
console.log(m1);
if(m1) {
switch(m1[1]) {
case '-webkit-linear-gradient':
@ -132,6 +141,64 @@ _html2canvas.Generate.parseGradient = function(css, bounds) {
}
}
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;
}
if(gradient.x0 === gradient.x1) // center
gradient.x0 = gradient.x1 = 0;
if(gradient.y0 === gradient.y1) // center
gradient.y0 = gradient.y1 = 0;
// 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;
}
}