Double tap to seek +-15s

static/hammer.min.js

+/*! Hammer.JS - v2.0.8 - 2016-04-23
+ * http://hammerjs.github.io/
+ *
+ * Copyright (c) 2016 Jorik Tangelder;
+ * Licensed under the MIT license */
+!function(a,b,c,d){"use strict";function e(a,b,c){return setTimeout(j(a,c),b)}function f(a,b,c){return Array.isArray(a)?(g(a,c[b],c),!0):!1}function g(a,b,c){var e;if(a)if(a.forEach)a.forEach(b,c);else if(a.length!==d)for(e=0;e<a.length;)b.call(c,a[e],e,a),e++;else for(e in a)a.hasOwnProperty(e)&&b.call(c,a[e],e,a)}function h(b,c,d){var e="DEPRECATED METHOD: "+c+"\n"+d+" AT \n";return function(){var c=new Error("get-stack-trace"),d=c&&c.stack?c.stack.replace(/^[^\(]+?[\n$]/gm,"").replace(/^\s+at\s+/gm,"").replace(/^Object.<anonymous>\s*\(/gm,"{anonymous}()@"):"Unknown Stack Trace",f=a.console&&(a.console.warn||a.console.log);return f&&f.call(a.console,e,d),b.apply(this,arguments)}}function i(a,b,c){var d,e=b.prototype;d=a.prototype=Object.create(e),d.constructor=a,d._super=e,c&&la(d,c)}function j(a,b){return function(){return a.apply(b,arguments)}}function k(a,b){return typeof a==oa?a.apply(b?b[0]||d:d,b):a}function l(a,b){return a===d?b:a}function 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b=this.options,c=a.pointers.length===b.pointers,d=a.distance<b.threshold,f=a.deltaTime<b.time;if(this.reset(),a.eventType&Ea&&0===this.count)return this.failTimeout();if(d&&f&&c){if(a.eventType!=Ga)return this.failTimeout();var g=this.pTime?a.timeStamp-this.pTime<b.interval:!0,h=!this.pCenter||H(this.pCenter,a.center)<b.posThreshold;this.pTime=a.timeStamp,this.pCenter=a.center,h&&g?this.count+=1:this.count=1,this._input=a;var i=this.count%b.taps;if(0===i)return this.hasRequireFailures()?(this._timer=e(function(){this.state=rb,this.tryEmit()},b.interval,this),ob):rb}return tb},failTimeout:function(){return this._timer=e(function(){this.state=tb},this.options.interval,this),tb},reset:function(){clearTimeout(this._timer)},emit:function(){this.state==rb&&(this._input.tapCount=this.count,this.manager.emit(this.options.event,this._input))}}),ha.VERSION="2.0.8",ha.defaults={domEvents:!1,touchAction:gb,enable:!0,inputTarget:null,inputClass:null,preset:[[ea,{enable:!1}],[ca,{enable:!1},["rotate"]],[fa,{direction:Na}],[ba,{direction:Na},["swipe"]],[ga],[ga,{event:"doubletap",taps:2},["tap"]],[da]],cssProps:{userSelect:"none",touchSelect:"none",touchCallout:"none",contentZooming:"none",userDrag:"none",tapHighlightColor:"rgba(0,0,0,0)"}};var ub=1,vb=2;ia.prototype={set:function(a){return la(this.options,a),a.touchAction&&this.touchAction.update(),a.inputTarget&&(this.input.destroy(),this.input.target=a.inputTarget,this.input.init()),this},stop:function(a){this.session.stopped=a?vb:ub},recognize:function(a){var b=this.session;if(!b.stopped){this.touchAction.preventDefaults(a);var c,d=this.recognizers,e=b.curRecognizer;(!e||e&&e.state&rb)&&(e=b.curRecognizer=null);for(var f=0;f<d.length;)c=d[f],b.stopped===vb||e&&c!=e&&!c.canRecognizeWith(e)?c.reset():c.recognize(a),!e&&c.state&(ob|pb|qb)&&(e=b.curRecognizer=c),f++}},get:function(a){if(a instanceof Y)return a;for(var b=this.recognizers,c=0;c<b.length;c++)if(b[c].options.event==a)return b[c];return null},add:function(a){if(f(a,"add",this))return this;var b=this.get(a.options.event);return b&&this.remove(b),this.recognizers.push(a),a.manager=this,this.touchAction.update(),a},remove:function(a){if(f(a,"remove",this))return this;if(a=this.get(a)){var b=this.recognizers,c=r(b,a);-1!==c&&(b.splice(c,1),this.touchAction.update())}return this},on:function(a,b){if(a!==d&&b!==d){var c=this.handlers;return g(q(a),function(a){c[a]=c[a]||[],c[a].push(b)}),this}},off:function(a,b){if(a!==d){var c=this.handlers;return g(q(a),function(a){b?c[a]&&c[a].splice(r(c[a],b),1):delete c[a]}),this}},emit:function(a,b){this.options.domEvents&&ka(a,b);var c=this.handlers[a]&&this.handlers[a].slice();if(c&&c.length){b.type=a,b.preventDefault=function(){b.srcEvent.preventDefault()};for(var d=0;d<c.length;)c[d](b),d++}},destroy:function(){this.element&&ja(this,!1),this.handlers={},this.session={},this.input.destroy(),this.element=null}},la(ha,{INPUT_START:Ea,INPUT_MOVE:Fa,INPUT_END:Ga,INPUT_CANCEL:Ha,STATE_POSSIBLE:nb,STATE_BEGAN:ob,STATE_CHANGED:pb,STATE_ENDED:qb,STATE_RECOGNIZED:rb,STATE_CANCELLED:sb,STATE_FAILED:tb,DIRECTION_NONE:Ia,DIRECTION_LEFT:Ja,DIRECTION_RIGHT:Ka,DIRECTION_UP:La,DIRECTION_DOWN:Ma,DIRECTION_HORIZONTAL:Na,DIRECTION_VERTICAL:Oa,DIRECTION_ALL:Pa,Manager:ia,Input:x,TouchAction:V,TouchInput:P,MouseInput:L,PointerEventInput:M,TouchMouseInput:R,SingleTouchInput:N,Recognizer:Y,AttrRecognizer:aa,Tap:ga,Pan:ba,Swipe:fa,Pinch:ca,Rotate:ea,Press:da,on:m,off:n,each:g,merge:ta,extend:sa,assign:la,inherit:i,bindFn:j,prefixed:u});var wb="undefined"!=typeof a?a:"undefined"!=typeof self?self:{};wb.Hammer=ha,"function"==typeof define&&define.amd?define(function(){return ha}):"undefined"!=typeof module&&module.exports?module.exports=ha:a[c]=ha}(window,document,"Hammer");
+//# sourceMappingURL=hammer.min.js.map
\ No newline at end of file

templates/base.html

@@ -37,6 +37,7 @@
 		<script src="{{url_for('static', filename='videojs/videojs-resolution-switcher.js')}}"></script>
 		<script src="{{url_for('static', filename='videojs/videojs.hotkeys.js')}}"></script>
 		<script src="{{url_for('static', filename='videojs/videojs-markers.js')}}"></script>
+		<script src="{{url_for('static', filename='hammer.min.js')}}"></script>
 		{% endblock %}
 	</head>
 	<body>

templates/macros.html

@@ -64,6 +64,24 @@
 $(function() {
 	$('#videoplayer').addClass("vjs-fluid");
 	$('#videoplayer').css("width");
+	var videoobj = document.getElementById("videoplayer");
+	var player = videojs("videoplayer");
+	var manager = new Hammer.Manager(videoobj);
+
+	var DoubleTap = new Hammer.Tap({
+	  event: 'doubletap',
+	  taps: 2
+	});
+
+	manager.add(DoubleTap);
+
+	manager.on('doubletap', function(e) {
+	  if(e.center.x<(e.target.clientWidth/2)) {
+	    player.currentTime(player.currentTime() - 15);
+	  } else {
+	    player.currentTime(player.currentTime() + 15);
+	  }
+	});
 	videojs("videoplayer").ready(function() {
 		//resume
 		var progress_key = "progress_{{ lecture.id }}";