File indexing completed on 2024-05-19 06:00:28

 /*! Copyright (c) 2013 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: 3.1.3
  *
  * Requires: 1.2.2+
  */
 
 (function (factory) {
     if ( typeof define === 'function' && define.amd ) {
         // AMD. Register as an anonymous module.
         define(['jquery'], factory);
     } else if (typeof exports === 'object') {
         // Node/CommonJS style for Browserify
         module.exports = factory;
     } else {
         // Browser globals
         factory(jQuery);
     }
 }(function ($) {
 
     var toFix = ['wheel', 'mousewheel', 'DOMMouseScroll', 'MozMousePixelScroll'];
     var toBind = 'onwheel' in document || document.documentMode >= 9 ? ['wheel'] : ['mousewheel', 'DomMouseScroll', 'MozMousePixelScroll'];
     var lowestDelta, lowestDeltaXY;
 
     if ( $.event.fixHooks ) {
         for ( var i = toFix.length; i; ) {
             $.event.fixHooks[ toFix[--i] ] = $.event.mouseHooks;
         }
     }
 
     $.event.special.mousewheel = {
         setup: function() {
             if ( this.addEventListener ) {
                 for ( var i = toBind.length; i; ) {
                     this.addEventListener( toBind[--i], handler, false );
                 }
             } else {
                 this.onmousewheel = handler;
             }
         },
 
         teardown: function() {
             if ( this.removeEventListener ) {
                 for ( var i = toBind.length; i; ) {
                     this.removeEventListener( toBind[--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,
             deltaX = 0,
             deltaY = 0,
             absDelta = 0,
             absDeltaXY = 0,
             fn;
         event = $.event.fix(orgEvent);
         event.type = "mousewheel";
 
         // Old school scrollwheel delta
         if ( orgEvent.wheelDelta ) { delta = orgEvent.wheelDelta; }
         if ( orgEvent.detail )     { delta = orgEvent.detail * -1; }
 
         // New school wheel delta (wheel event)
         if ( orgEvent.deltaY ) {
             deltaY = orgEvent.deltaY * -1;
             delta  = deltaY;
         }
         if ( orgEvent.deltaX ) {
             deltaX = orgEvent.deltaX;
             delta  = deltaX * -1;
         }
 
         // Webkit
         if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY; }
         if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = orgEvent.wheelDeltaX * -1; }
 
         // Look for lowest delta to normalize the delta values
         absDelta = Math.abs(delta);
         if ( !lowestDelta || absDelta < lowestDelta ) { lowestDelta = absDelta; }
         absDeltaXY = Math.max(Math.abs(deltaY), Math.abs(deltaX));
         if ( !lowestDeltaXY || absDeltaXY < lowestDeltaXY ) { lowestDeltaXY = absDeltaXY; }
 
         // Get a whole value for the deltas
         fn = delta > 0 ? 'floor' : 'ceil';
         delta  = Math[fn](delta / lowestDelta);
         deltaX = Math[fn](deltaX / lowestDeltaXY);
         deltaY = Math[fn](deltaY / lowestDeltaXY);
 
         // Add event and delta to the front of the arguments
         args.unshift(event, delta, deltaX, deltaY);
 
         return ($.event.dispatch || $.event.handle).apply(this, args);
     }
 
 }));