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jquery.mousewheel.js 0000644 00000020113 15024757634 0010607 0 ustar 00 /*! * 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; } })); LICENSE.txt 0000644 00000003120 15024757634 0006400 0 ustar 00 Copyright jQuery Foundation and other contributors https://jquery.org/ This software consists of voluntary contributions made by many individuals. For exact contribution history, see the revision history available at https://github.com/jquery/jquery-mousewheel The following license applies to all parts of this software except as documented below: ==== Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ==== All files located in the node_modules and external directories are externally maintained libraries used by this software which have their own licenses; we recommend you read them, as their terms may differ from the terms above.
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