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path: root/frontend/gamma/js/Zepto/gesture.js
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diff --git a/frontend/gamma/js/Zepto/gesture.js b/frontend/gamma/js/Zepto/gesture.js
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1// Zepto.js
2// (c) 2010-2012 Thomas Fuchs
3// Zepto.js may be freely distributed under the MIT license.
4
5;(function($){
6 if ($.os.ios) {
7 var gesture = {}, gestureTimeout
8
9 function parentIfText(node){
10 return 'tagName' in node ? node : node.parentNode
11 }
12
13 $(document).bind('gesturestart', function(e){
14 var now = Date.now(), delta = now - (gesture.last || now)
15 gesture.target = parentIfText(e.target)
16 gestureTimeout && clearTimeout(gestureTimeout)
17 gesture.e1 = e.scale
18 gesture.last = now
19 }).bind('gesturechange', function(e){
20 gesture.e2 = e.scale
21 }).bind('gestureend', function(e){
22 if (gesture.e2 > 0) {
23 Math.abs(gesture.e1 - gesture.e2) != 0 && $(gesture.target).trigger('pinch') &&
24 $(gesture.target).trigger('pinch' + (gesture.e1 - gesture.e2 > 0 ? 'In' : 'Out'))
25 gesture.e1 = gesture.e2 = gesture.last = 0
26 } else if ('last' in gesture) {
27 gesture = {}
28 }
29 })
30
31 ;['pinch', 'pinchIn', 'pinchOut'].forEach(function(m){
32 $.fn[m] = function(callback){ return this.bind(m, callback) }
33 })
34 }
35})(Zepto)