1 | /*! Copyright (c) 2011 Brandon Aaron (http://brandonaaron.net)
|
---|
2 | * Licensed under the MIT License (LICENSE.txt).
|
---|
3 | *
|
---|
4 | * Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
|
---|
5 | * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
|
---|
6 | * Thanks to: Seamus Leahy for adding deltaX and deltaY
|
---|
7 | *
|
---|
8 | * Version: 3.0.6
|
---|
9 | *
|
---|
10 | * Requires: 1.2.2+
|
---|
11 | */
|
---|
12 |
|
---|
13 | (function($) {
|
---|
14 |
|
---|
15 | var types = ['DOMMouseScroll', 'mousewheel'];
|
---|
16 |
|
---|
17 | if ($.event.fixHooks) {
|
---|
18 | for ( var i=types.length; i; ) {
|
---|
19 | $.event.fixHooks[ types[--i] ] = $.event.mouseHooks;
|
---|
20 | }
|
---|
21 | }
|
---|
22 |
|
---|
23 | $.event.special.mousewheel = {
|
---|
24 | setup: function() {
|
---|
25 | if ( this.addEventListener ) {
|
---|
26 | for ( var i=types.length; i; ) {
|
---|
27 | this.addEventListener( types[--i], handler, false );
|
---|
28 | }
|
---|
29 | } else {
|
---|
30 | this.onmousewheel = handler;
|
---|
31 | }
|
---|
32 | },
|
---|
33 |
|
---|
34 | teardown: function() {
|
---|
35 | if ( this.removeEventListener ) {
|
---|
36 | for ( var i=types.length; i; ) {
|
---|
37 | this.removeEventListener( types[--i], handler, false );
|
---|
38 | }
|
---|
39 | } else {
|
---|
40 | this.onmousewheel = null;
|
---|
41 | }
|
---|
42 | }
|
---|
43 | };
|
---|
44 |
|
---|
45 | $.fn.extend({
|
---|
46 | mousewheel: function(fn) {
|
---|
47 | return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
|
---|
48 | },
|
---|
49 |
|
---|
50 | unmousewheel: function(fn) {
|
---|
51 | return this.unbind("mousewheel", fn);
|
---|
52 | }
|
---|
53 | });
|
---|
54 |
|
---|
55 |
|
---|
56 | function handler(event) {
|
---|
57 | var orgEvent = event || window.event, args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true, deltaX = 0, deltaY = 0;
|
---|
58 | event = $.event.fix(orgEvent);
|
---|
59 | event.type = "mousewheel";
|
---|
60 |
|
---|
61 | // Old school scrollwheel delta
|
---|
62 | if ( orgEvent.wheelDelta ) { delta = orgEvent.wheelDelta/120; }
|
---|
63 | if ( orgEvent.detail ) { delta = -orgEvent.detail/3; }
|
---|
64 |
|
---|
65 | // New school multidimensional scroll (touchpads) deltas
|
---|
66 | deltaY = delta;
|
---|
67 |
|
---|
68 | // Gecko
|
---|
69 | if ( orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
|
---|
70 | deltaY = 0;
|
---|
71 | deltaX = -1*delta;
|
---|
72 | }
|
---|
73 |
|
---|
74 | // Webkit
|
---|
75 | if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY/120; }
|
---|
76 | if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = -1*orgEvent.wheelDeltaX/120; }
|
---|
77 |
|
---|
78 | // Add event and delta to the front of the arguments
|
---|
79 | args.unshift(event, delta, deltaX, deltaY);
|
---|
80 |
|
---|
81 | return ($.event.dispatch || $.event.handle).apply(this, args);
|
---|
82 | }
|
---|
83 |
|
---|
84 | })(jQuery); |
---|