--- /dev/null
+/*!
+ * jQuery Mousewheel 3.1.13
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ */
+
+(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'],
+ 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;
+ }
+ // Store the line height and page height for this particular element
+ $.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;
+ }
+ // Clean up the data we added to the element
+ $.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, // see shouldAdjustOldDeltas() below
+ normalizeOffset: true // calls getBoundingClientRect for each event
+ }
+ };
+
+ $.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';
+
+ // Old school scrollwheel delta
+ 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; }
+
+ // Firefox < 17 horizontal scrolling related to DOMMouseScroll event
+ if ( 'axis' in orgEvent && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
+ deltaX = deltaY * -1;
+ deltaY = 0;
+ }
+
+ // Set delta to be deltaY or deltaX if deltaY is 0 for backwards compatabilitiy
+ delta = deltaY === 0 ? deltaX : deltaY;
+
+ // New school wheel delta (wheel event)
+ if ( 'deltaY' in orgEvent ) {
+ deltaY = orgEvent.deltaY * -1;
+ delta = deltaY;
+ }
+ if ( 'deltaX' in orgEvent ) {
+ deltaX = orgEvent.deltaX;
+ if ( deltaY === 0 ) { delta = deltaX * -1; }
+ }
+
+ // No change actually happened, no reason to go any further
+ if ( deltaY === 0 && deltaX === 0 ) { return; }
+
+ // Need to convert lines and pages to pixels if we aren't already in pixels
+ // There are three delta modes:
+ // * deltaMode 0 is by pixels, nothing to do
+ // * deltaMode 1 is by lines
+ // * deltaMode 2 is by pages
+ if ( orgEvent.deltaMode === 1 ) {
+ var lineHeight = $.data(this, 'mousewheel-line-height');
+ delta *= lineHeight;
+ deltaY *= lineHeight;
+ deltaX *= lineHeight;
+ } else if ( orgEvent.deltaMode === 2 ) {
+ var pageHeight = $.data(this, 'mousewheel-page-height');
+ delta *= pageHeight;
+ deltaY *= pageHeight;
+ deltaX *= pageHeight;
+ }
+
+ // Store lowest absolute delta to normalize the delta values
+ absDelta = Math.max( Math.abs(deltaY), Math.abs(deltaX) );
+
+ if ( !lowestDelta || absDelta < lowestDelta ) {
+ lowestDelta = absDelta;
+
+ // Adjust older deltas if necessary
+ if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
+ lowestDelta /= 40;
+ }
+ }
+
+ // Adjust older deltas if necessary
+ if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
+ // Divide all the things by 40!
+ delta /= 40;
+ deltaX /= 40;
+ deltaY /= 40;
+ }
+
+ // Get a whole, normalized value for the deltas
+ delta = Math[ delta >= 1 ? 'floor' : 'ceil' ](delta / lowestDelta);
+ deltaX = Math[ deltaX >= 1 ? 'floor' : 'ceil' ](deltaX / lowestDelta);
+ deltaY = Math[ deltaY >= 1 ? 'floor' : 'ceil' ](deltaY / lowestDelta);
+
+ // Normalise offsetX and offsetY properties
+ if ( special.settings.normalizeOffset && this.getBoundingClientRect ) {
+ var boundingRect = this.getBoundingClientRect();
+ offsetX = event.clientX - boundingRect.left;
+ offsetY = event.clientY - boundingRect.top;
+ }
+
+ // Add information to the event object
+ event.deltaX = deltaX;
+ event.deltaY = deltaY;
+ event.deltaFactor = lowestDelta;
+ event.offsetX = offsetX;
+ event.offsetY = offsetY;
+ // Go ahead and set deltaMode to 0 since we converted to pixels
+ // Although this is a little odd since we overwrite the deltaX/Y
+ // properties with normalized deltas.
+ event.deltaMode = 0;
+
+ // Add event and delta to the front of the arguments
+ args.unshift(event, delta, deltaX, deltaY);
+
+ // Clearout lowestDelta after sometime to better
+ // handle multiple device types that give different
+ // a different lowestDelta
+ // Ex: trackpad = 3 and mouse wheel = 120
+ if (nullLowestDeltaTimeout) { clearTimeout(nullLowestDeltaTimeout); }
+ nullLowestDeltaTimeout = setTimeout(nullLowestDelta, 200);
+
+ return ($.event.dispatch || $.event.handle).apply(this, args);
+ }
+
+ function nullLowestDelta() {
+ lowestDelta = null;
+ }
+
+ function shouldAdjustOldDeltas(orgEvent, absDelta) {
+ // If this is an older event and the delta is divisable by 120,
+ // then we are assuming that the browser is treating this as an
+ // older mouse wheel event and that we should divide the deltas
+ // by 40 to try and get a more usable deltaFactor.
+ // Side note, this actually impacts the reported scroll distance
+ // in older browsers and can cause scrolling to be slower than native.
+ // Turn this off by setting $.event.special.mousewheel.settings.adjustOldDeltas to false.
+ return special.settings.adjustOldDeltas && orgEvent.type === 'mousewheel' && absDelta % 120 === 0;
+ }
+
+}));
Code Review / portal.git / blobdiff