requestAnimationFrame addition to utils. (#1107)

* requestAnimationFrame addition to utils. * Update util.js * Update util.js * Update util.js * Update util.js * Update util.js
katspaugh · May 31, 2017 · 0552da8 · 0552da8
1 parent 7778308
commit 0552da8
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/src/util.js b/src/util.js
@@ -1,5 +1,23 @@
 /* Common utilities */
 WaveSurfer.util = {
+    requestAnimationFrame: (
+        window.requestAnimationFrame ||
+        window.webkitRequestAnimationFrame ||
+        window.mozRequestAnimationFrame ||
+        window.oRequestAnimationFrame ||
+        window.msRequestAnimationFrame ||
+        function (callback, element) { setTimeout(callback, 1000 / 60); }
+    ),
+
+    frame: function (func) {
+        return function () {
+            var my = this, args = arguments;
+            WaveSurfer.util.requestAnimationFrame(function () {
+                func.apply(my, args);
+            });
+        };
+    },
+
     extend: function (dest) {
         var sources = Array.prototype.slice.call(arguments, 1);
         sources.forEach(function (source) {