/*! 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+
|
*/
|
|
(function($) {
|
|
var types = ['DOMMouseScroll', 'mousewheel'];
|
|
if ($.event.fixHooks) {
|
for ( var i=types.length; i; ) {
|
$.event.fixHooks[ types[--i] ] = $.event.mouseHooks;
|
}
|
}
|
|
$.event.special.mousewheel = {
|
setup: function() {
|
if ( this.addEventListener ) {
|
for ( var i=types.length; i; ) {
|
this.addEventListener( types[--i], handler, false );
|
}
|
} else {
|
this.onmousewheel = handler;
|
}
|
},
|
|
teardown: function() {
|
if ( this.removeEventListener ) {
|
for ( var i=types.length; i; ) {
|
this.removeEventListener( types[--i], handler, false );
|
}
|
} else {
|
this.onmousewheel = null;
|
}
|
}
|
};
|
|
$.fn.extend({
|
mousewheel: function(fn) {
|
return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
|
},
|
|
unmousewheel: function(fn) {
|
return this.unbind("mousewheel", fn);
|
}
|
});
|
|
|
function handler(event) {
|
var orgEvent = event || window.event, args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true, deltaX = 0, deltaY = 0;
|
event = $.event.fix(orgEvent);
|
event.type = "mousewheel";
|
|
// Old school scrollwheel delta
|
if ( orgEvent.wheelDelta ) { delta = orgEvent.wheelDelta/120; }
|
if ( orgEvent.detail ) { delta = -orgEvent.detail/3; }
|
|
// New school multidimensional scroll (touchpads) deltas
|
deltaY = delta;
|
|
// Gecko
|
if ( orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
|
deltaY = 0;
|
deltaX = -1*delta;
|
}
|
|
// Webkit
|
if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY/120; }
|
if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = -1*orgEvent.wheelDeltaX/120; }
|
|
// Add event and delta to the front of the arguments
|
args.unshift(event, delta, deltaX, deltaY);
|
|
return ($.event.dispatch || $.event.handle).apply(this, args);
|
}
|
|
})(jQuery);
|
