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Run requestAnimationFrame for no jank if a browser supports it #24

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Run requestAnimationFrame for no jank if a browser supports it #24

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19 changes: 17 additions & 2 deletions modes/canvas/surface.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,21 @@ var Class = require('../../core/class');
var Container = require('../../dom/container');
var Element = require('../../dom/native');

(function() {
if (window.requestAnimationFrame) {
return;
}

var vendors = ['ms', 'moz', 'webkit', 'o'];
for (var i = 0; i < vendors.length; i++) {
var rafName = vendors[i] + 'RequestAnimationFrame';
if (window[rafName]) {
window.requestAnimationFrame = window[rafName];
break;
}
}
})();

var fps = 1000 / 60, invalids = [], renderTimer, renderInvalids = function(){
clearTimeout(renderTimer);
renderTimer = null;
Expand Down Expand Up @@ -102,9 +117,9 @@ var CanvasSurface = Class(Element, Container, {
this._valid = false;
invalids.push(this);
if (!renderTimer){
if (window.mozRequestAnimationFrame){
if (window.requestAnimationFrame){
renderTimer = true;
window.mozRequestAnimationFrame(renderInvalids);
window.requestAnimationFrame(renderInvalids);
} else {
renderTimer = setTimeout(renderInvalids, fps);
}
Expand Down