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/*! Copyright (c) 2011 Brandon Aaron (http://brandonaaron.net) | ||
* Licensed under the MIT License (LICENSE.txt). | ||
* | ||
* Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers. | ||
* Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix. | ||
* Thanks to: Seamus Leahy for adding deltaX and deltaY | ||
* | ||
* Version: 3.0.6 | ||
* | ||
* Requires: 1.2.2+ | ||
*/ | ||
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(function($) { | ||
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var types = ['DOMMouseScroll', 'mousewheel']; | ||
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if ($.event.fixHooks) { | ||
for ( var i=types.length; i; ) { | ||
$.event.fixHooks[ types[--i] ] = $.event.mouseHooks; | ||
} | ||
} | ||
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$.event.special.mousewheel = { | ||
setup: function() { | ||
if ( this.addEventListener ) { | ||
for ( var i=types.length; i; ) { | ||
this.addEventListener( types[--i], handler, false ); | ||
} | ||
} else { | ||
this.onmousewheel = handler; | ||
} | ||
}, | ||
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teardown: function() { | ||
if ( this.removeEventListener ) { | ||
for ( var i=types.length; i; ) { | ||
this.removeEventListener( types[--i], handler, false ); | ||
} | ||
} else { | ||
this.onmousewheel = null; | ||
} | ||
} | ||
}; | ||
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$.fn.extend({ | ||
mousewheel: function(fn) { | ||
return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel"); | ||
}, | ||
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unmousewheel: function(fn) { | ||
return this.unbind("mousewheel", fn); | ||
} | ||
}); | ||
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function handler(event) { | ||
var orgEvent = event || window.event, args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true, deltaX = 0, deltaY = 0; | ||
event = $.event.fix(orgEvent); | ||
event.type = "mousewheel"; | ||
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// Old school scrollwheel delta | ||
if ( orgEvent.wheelDelta ) { delta = orgEvent.wheelDelta/120; } | ||
if ( orgEvent.detail ) { delta = -orgEvent.detail/3; } | ||
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// New school multidimensional scroll (touchpads) deltas | ||
deltaY = delta; | ||
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// Gecko | ||
if ( orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) { | ||
deltaY = 0; | ||
deltaX = -1*delta; | ||
} | ||
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// Webkit | ||
if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY/120; } | ||
if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = -1*orgEvent.wheelDeltaX/120; } | ||
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// Add event and delta to the front of the arguments | ||
args.unshift(event, delta, deltaX, deltaY); | ||
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return ($.event.dispatch || $.event.handle).apply(this, args); | ||
} | ||
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})(jQuery); |