# HG changeset patch
# User Nicholas Jillings <nicholas.jillings@mail.bcu.ac.uk>
# Date 1493375548 -3600
# Node ID 6b38dc6418124bffbeed72e8b02ace1282e53c5e
# Parent  7f2bb599711448ea77207b185c91f820ba06af52
Using animation callback for playhead

diff -r 7f2bb5997114 -r 6b38dc641812 js/core.js
--- a/js/core.js	Tue Apr 25 15:31:02 2017 +0100
+++ b/js/core.js	Fri Apr 28 11:32:28 2017 +0100
@@ -2903,32 +2903,20 @@
                     }
                 }
             }
+            if (this.playbackObject !== undefined && this.interval === undefined) {
+                window.requestAnimationFrame(this.update.bind(this));
+            }
         };
 
         playhead.interval = undefined;
 
         playhead.start = function () {
             if (this.playbackObject !== undefined && this.interval === undefined) {
-                if (this.maxTime < 60) {
-                    this.interval = window.setInterval(function () {
-                        interfaceContext.playhead.update();
-                    }, 10);
-                } else {
-                    this.interval = window.setInterval(function () {
-                        interfaceContext.playhead.update();
-                    }, 100);
-                }
+                window.requestAnimationFrame(this.update.bind(this));
             }
         };
         playhead.stop = function () {
-            window.clearInterval(this.interval);
-            this.interval = undefined;
-            this.scrubberHead.style.left = '0px';
-            if (this.maxTime < 60) {
-                this.curTimeSpan.textContent = '0.00';
-            } else {
-                this.curTimeSpan.textContent = '00:00';
-            }
+            this.timePerPixel = 0;
         };
         return playhead;
     })();