visiongeist · August 30, 2012 08:24 · Aug 30, 2012 · Aug 30, 2012
diff --git a/requestanimationframe-for-jquery b/requestanimationframe-for-jquery
@@ -0,0 +1,58 @@
+(function($, window, undefined) {
+    // http://paulirish.com/2011/requestanimationframe-for-smart-animating/
+    // http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating
+
+    // requestAnimationFrame polyfill by Erik Möller
+    // fixes from Paul Irish and Tino Zijdel
+
+    var lastTime = 0,
+        running,
+        animate = function (elem) {
+            if (running) {
+                window.requestAnimationFrame(animate, elem);
+                jQuery.fx.tick();
+            }
+        },
+        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(fn, element) {
+            var currTime = new Date().getTime(),
+                delta = currTime - lastTime,
+                timeToCall = Math.max(0, 16 - delta);
+
+            var id = window.setTimeout(function() {
+                    fn(currTime + timeToCall);
+                },
+                timeToCall
+            );
+
+            lastTime = currTime + timeToCall;
+
+            return id;
+        };
+
+    if (!window.cancelAnimationFrame) {
+        window.cancelAnimationFrame = function(id) {
+            clearTimeout(id);
+        };
+    }
+
+    jQuery.fx.timer = function (timer) {
+        if (timer() && jQuery.timers.push(timer) && !running) {
+            running = true;
+            animate(timer.elem);
+        }
+    };
+
+    jQuery.fx.stop = function() {
+        running = false;
+    };
+
+}(jQuery, this));