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- (function (factory) {
- if ( typeof define === 'function' && define.amd ) {
-
- define(['jquery'], factory);
- } else if (typeof exports === 'object') {
-
- module.exports = factory;
- } else {
-
- factory(jQuery);
- }
- }(function ($) {
- var toFix = ['wheel', 'mousewheel', 'DOMMouseScroll', 'MozMousePixelScroll'],
- toBind = ( 'onwheel' in document || document.documentMode >= 9 ) ?
- ['wheel'] : ['mousewheel', 'DomMouseScroll', 'MozMousePixelScroll'],
- slice = Array.prototype.slice,
- nullLowestDeltaTimeout, lowestDelta;
- if ( $.event.fixHooks ) {
- for ( var i = toFix.length; i; ) {
- $.event.fixHooks[ toFix[--i] ] = $.event.mouseHooks;
- }
- }
- var special = $.event.special.mousewheel = {
- version: '3.1.12',
- setup: function() {
- if ( this.addEventListener ) {
- for ( var i = toBind.length; i; ) {
- this.addEventListener( toBind[--i], handler, false );
- }
- } else {
- this.onmousewheel = handler;
- }
-
- $.data(this, 'mousewheel-line-height', special.getLineHeight(this));
- $.data(this, 'mousewheel-page-height', special.getPageHeight(this));
- },
- teardown: function() {
- if ( this.removeEventListener ) {
- for ( var i = toBind.length; i; ) {
- this.removeEventListener( toBind[--i], handler, false );
- }
- } else {
- this.onmousewheel = null;
- }
-
- $.removeData(this, 'mousewheel-line-height');
- $.removeData(this, 'mousewheel-page-height');
- },
- getLineHeight: function(elem) {
- var $elem = $(elem),
- $parent = $elem['offsetParent' in $.fn ? 'offsetParent' : 'parent']();
- if (!$parent.length) {
- $parent = $('body');
- }
- return parseInt($parent.css('fontSize'), 10) || parseInt($elem.css('fontSize'), 10) || 16;
- },
- getPageHeight: function(elem) {
- return $(elem).height();
- },
- settings: {
- adjustOldDeltas: true,
- normalizeOffset: true
- }
- };
- $.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,
- offsetX = 0,
- offsetY = 0;
- event = $.event.fix(orgEvent);
- event.type = 'mousewheel';
-
- if ( 'detail' in orgEvent ) { deltaY = orgEvent.detail * -1; }
- if ( 'wheelDelta' in orgEvent ) { deltaY = orgEvent.wheelDelta; }
- if ( 'wheelDeltaY' in orgEvent ) { deltaY = orgEvent.wheelDeltaY; }
- if ( 'wheelDeltaX' in orgEvent ) { deltaX = orgEvent.wheelDeltaX * -1; }
-
- if ( 'axis' in orgEvent && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
- deltaX = deltaY * -1;
- deltaY = 0;
- }
-
- delta = deltaY === 0 ? deltaX : deltaY;
-
- if ( 'deltaY' in orgEvent ) {
- deltaY = orgEvent.deltaY * -1;
- delta = deltaY;
- }
- if ( 'deltaX' in orgEvent ) {
- deltaX = orgEvent.deltaX;
- if ( deltaY === 0 ) { delta = deltaX * -1; }
- }
-
- if ( deltaY === 0 && deltaX === 0 ) { return; }
-
-
-
-
-
- if ( orgEvent.deltaMode === 1 ) {
- var lineHeight = $.data(this, 'mousewheel-line-height');
- delta *= lineHeight;
- deltaY *= lineHeight;
- deltaX *= lineHeight;
- } else if ( orgEvent.deltaMode === 2 ) {
- var pageHeight = $.data(this, 'mousewheel-page-height');
- delta *= pageHeight;
- deltaY *= pageHeight;
- deltaX *= pageHeight;
- }
-
- absDelta = Math.max( Math.abs(deltaY), Math.abs(deltaX) );
- if ( !lowestDelta || absDelta < lowestDelta ) {
- lowestDelta = absDelta;
-
- if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
- lowestDelta /= 40;
- }
- }
-
- if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
-
- delta /= 40;
- deltaX /= 40;
- deltaY /= 40;
- }
-
- delta = Math[ delta >= 1 ? 'floor' : 'ceil' ](delta / lowestDelta);
- deltaX = Math[ deltaX >= 1 ? 'floor' : 'ceil' ](deltaX / lowestDelta);
- deltaY = Math[ deltaY >= 1 ? 'floor' : 'ceil' ](deltaY / lowestDelta);
-
- if ( special.settings.normalizeOffset && this.getBoundingClientRect ) {
- var boundingRect = this.getBoundingClientRect();
- offsetX = event.clientX - boundingRect.left;
- offsetY = event.clientY - boundingRect.top;
- }
-
- event.deltaX = deltaX;
- event.deltaY = deltaY;
- event.deltaFactor = lowestDelta;
- event.offsetX = offsetX;
- event.offsetY = offsetY;
-
-
-
- event.deltaMode = 0;
-
- args.unshift(event, delta, deltaX, deltaY);
-
-
-
-
- if (nullLowestDeltaTimeout) { clearTimeout(nullLowestDeltaTimeout); }
- nullLowestDeltaTimeout = setTimeout(nullLowestDelta, 200);
- return ($.event.dispatch || $.event.handle).apply(this, args);
- }
- function nullLowestDelta() {
- lowestDelta = null;
- }
- function shouldAdjustOldDeltas(orgEvent, absDelta) {
-
-
-
-
-
-
-
- return special.settings.adjustOldDeltas && orgEvent.type === 'mousewheel' && absDelta % 120 === 0;
- }
- }));
|