diff --git a/src/core/utils/requestAnimationFramePolyfill.js b/src/core/utils/requestAnimationFramePolyfill.js new file mode 100644 index 0000000..3e14a07 --- /dev/null +++ b/src/core/utils/requestAnimationFramePolyfill.js @@ -0,0 +1,27 @@ +(function(window) { + var lastTime = 0; + var vendors = ['ms', 'moz', 'webkit', 'o']; + for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) { + window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame']; + window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] || + window[vendors[x] + 'CancelRequestAnimationFrame']; + } + + if (!window.requestAnimationFrame) { + window.requestAnimationFrame = function(callback) { + var currTime = new Date().getTime(); + var timeToCall = Math.max(0, 16 - (currTime - lastTime)); + var id = window.setTimeout(function() { callback(currTime + timeToCall); }, + timeToCall); + lastTime = currTime + timeToCall; + return id; + }; + } + + if (!window.cancelAnimationFrame) { + window.cancelAnimationFrame = function(id) { + clearTimeout(id); + }; + } + + })(window);