libjs-jquery-mousewheel 11-3 / usr / share / javascript / jquery-mousewheel / jquery.mousewheel.min.js

(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}});