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Added FF17 wheel event support and calculations. #50

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llkats wants to merge 2 commits into from
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Added FF17 wheel event support and calculations. #50

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bbbf22a
Added delta calculations for new Wheel event in FF17 and IE9.
llkats Jan 16, 2013
f043b3d
Minor license update.
llkats Jan 16, 2013
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27 changes: 17 additions & 10 deletions jquery.mousewheel.js
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Original file line number Diff line number Diff line change
@@ -1,12 +1,15 @@
/*! Copyright (c) 2011 Brandon Aaron (http://brandonaaron.net)
*
* Wheel event handling added Jan 2013 by Lydia Katsamberis (http://www.llkats.com)
*
* 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
*
* Version: 3.0.7
*
* Requires: 1.2.2+
*/

Expand All @@ -30,7 +33,7 @@ $.event.special.mousewheel = {
this.onmousewheel = handler;
}
},

teardown: function() {
if ( this.removeEventListener ) {
for ( var i=types.length; i; ) {
Expand All @@ -46,7 +49,7 @@ $.fn.extend({
mousewheel: function(fn) {
return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
},

unmousewheel: function(fn) {
return this.unbind("mousewheel", fn);
}
Expand All @@ -57,27 +60,31 @@ 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 Wheel event delta
if ( orgEvent.deltaY ) { delta = orgEvent.deltaY/9 * -1; }
if ( orgEvent.deltaX ) { delta = orgEvent.deltaX/9 * -1; }

// 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);
}

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