libjs-iscroll 5.2.0+dfsg1-1 / usr / share / javascript / iscroll / iscroll-infinite-min.js

(function(window,document,Math){var rAF=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||function(callback){window.setTimeout(callback,1e3/60)};var utils=function(){var me={};var _elementStyle=document.createElement("div").style;var _vendor=function(){var vendors=["t","webkitT","MozT","msT","OT"],transform,i=0,l=vendors.length;for(;i<l;i++){transform=vendors[i]+"ransform";if(transform in _elementStyle)return vendors[i].substr(0,vendors[i].length-1)}return false}();function _prefixStyle(style){if(_vendor===false)return false;if(_vendor==="")return style;return _vendor+style.charAt(0).toUpperCase()+style.substr(1)}me.getTime=Date.now||function getTime(){return(new Date).getTime()};me.extend=function(target,obj){for(var i in obj){target[i]=obj[i]}};me.addEvent=function(el,type,fn,capture){el.addEventListener(type,fn,!!capture)};me.removeEvent=function(el,type,fn,capture){el.removeEventListener(type,fn,!!capture)};me.prefixPointerEvent=function(pointerEvent){return window.MSPointerEvent?"MSPointer"+pointerEvent.charAt(7).toUpperCase()+pointerEvent.substr(8):pointerEvent};me.momentum=function(current,start,time,lowerMargin,wrapperSize,deceleration){var distance=current-start,speed=Math.abs(distance)/time,destination,duration;deceleration=deceleration===undefined?6e-4:deceleration;destination=current+speed*speed/(2*deceleration)*(distance<0?-1:1);duration=speed/deceleration;if(destination<lowerMargin){destination=wrapperSize?lowerMargin-wrapperSize/2.5*(speed/8):lowerMargin;distance=Math.abs(destination-current);duration=distance/speed}else if(destination>0){destination=wrapperSize?wrapperSize/2.5*(speed/8):0;distance=Math.abs(current)+destination;duration=distance/speed}return{destination:Math.round(destination),duration:duration}};var _transform=_prefixStyle("transform");me.extend(me,{hasTransform:_transform!==false,hasPerspective:_prefixStyle("perspective")in _elementStyle,hasTouch:"ontouchstart"in window,hasPointer:!!(window.PointerEvent||window.MSPointerEvent),hasTransition:_prefixStyle("transition")in _elementStyle});me.isBadAndroid=function(){var appVersion=window.navigator.appVersion;if(/Android/.test(appVersion)&&!/Chrome\/\d/.test(appVersion)){var safariVersion=appVersion.match(/Safari\/(\d+.\d)/);if(safariVersion&&typeof safariVersion==="object"&&safariVersion.length>=2){return parseFloat(safariVersion[1])<535.19}else{return true}}else{return false}}();me.extend(me.style={},{transform:_transform,transitionTimingFunction:_prefixStyle("transitionTimingFunction"),transitionDuration:_prefixStyle("transitionDuration"),transitionDelay:_prefixStyle("transitionDelay"),transformOrigin:_prefixStyle("transformOrigin")});me.hasClass=function(e,c){var re=new RegExp("(^|\\s)"+c+"(\\s|$)");return re.test(e.className)};me.addClass=function(e,c){if(me.hasClass(e,c)){return}var newclass=e.className.split(" ");newclass.push(c);e.className=newclass.join(" ")};me.removeClass=function(e,c){if(!me.hasClass(e,c)){return}var re=new RegExp("(^|\\s)"+c+"(\\s|$)","g");e.className=e.className.replace(re," ")};me.offset=function(el){var left=-el.offsetLeft,top=-el.offsetTop;while(el=el.offsetParent){left-=el.offsetLeft;top-=el.offsetTop}return{left:left,top:top}};me.preventDefaultException=function(el,exceptions){for(var i in exceptions){if(exceptions[i].test(el[i])){return true}}return false};me.extend(me.eventType={},{touchstart:1,touchmove:1,touchend:1,mousedown:2,mousemove:2,mouseup:2,pointerdown:3,pointermove:3,pointerup:3,MSPointerDown:3,MSPointerMove:3,MSPointerUp:3});me.extend(me.ease={},{quadratic:{style:"cubic-bezier(0.25, 0.46, 0.45, 0.94)",fn:function(k){return k*(2-k)}},circular:{style:"cubic-bezier(0.1, 0.57, 0.1, 1)",fn:function(k){return Math.sqrt(1- --k*k)}},back:{style:"cubic-bezier(0.175, 0.885, 0.32, 1.275)",fn:function(k){var b=4;return(k=k-1)*k*((b+1)*k+b)+1}},bounce:{style:"",fn:function(k){if((k/=1)<1/2.75){return 7.5625*k*k}else if(k<2/2.75){return 7.5625*(k-=1.5/2.75)*k+.75}else if(k<2.5/2.75){return 7.5625*(k-=2.25/2.75)*k+.9375}else{return 7.5625*(k-=2.625/2.75)*k+.984375}}},elastic:{style:"",fn:function(k){var f=.22,e=.4;if(k===0){return 0}if(k==1){return 1}return e*Math.pow(2,-10*k)*Math.sin((k-f/4)*(2*Math.PI)/f)+1}}});me.tap=function(e,eventName){var ev=document.createEvent("Event");ev.initEvent(eventName,true,true);ev.pageX=e.pageX;ev.pageY=e.pageY;e.target.dispatchEvent(ev)};me.click=function(e){var target=e.target,ev;if(!/(SELECT|INPUT|TEXTAREA)/i.test(target.tagName)){ev=document.createEvent("MouseEvents");ev.initMouseEvent("click",true,true,e.view,1,target.screenX,target.screenY,target.clientX,target.clientY,e.ctrlKey,e.altKey,e.shiftKey,e.metaKey,0,null);ev._constructed=true;target.dispatchEvent(ev)}};return me}();function IScroll(el,options){this.wrapper=typeof el=="string"?document.querySelector(el):el;this.scroller=this.wrapper.children[0];this.scrollerStyle=this.scroller.style;this.options={mouseWheelSpeed:20,snapThreshold:.334,infiniteUseTransform:true,deceleration:.004,disablePointer:!utils.hasPointer,disableTouch:utils.hasPointer||!utils.hasTouch,disableMouse:utils.hasPointer||utils.hasTouch,startX:0,startY:0,scrollY:true,directionLockThreshold:5,momentum:true,bounce:true,bounceTime:600,bounceEasing:"",preventDefault:true,preventDefaultException:{tagName:/^(INPUT|TEXTAREA|BUTTON|SELECT)$/},HWCompositing:true,useTransition:true,useTransform:true,bindToWrapper:typeof window.onmousedown==="undefined"};for(var i in options){this.options[i]=options[i]}this.translateZ=this.options.HWCompositing&&utils.hasPerspective?" translateZ(0)":"";this.options.useTransition=utils.hasTransition&&this.options.useTransition;this.options.useTransform=utils.hasTransform&&this.options.useTransform;this.options.eventPassthrough=this.options.eventPassthrough===true?"vertical":this.options.eventPassthrough;this.options.preventDefault=!this.options.eventPassthrough&&this.options.preventDefault;this.options.scrollY=this.options.eventPassthrough=="vertical"?false:this.options.scrollY;this.options.scrollX=this.options.eventPassthrough=="horizontal"?false:this.options.scrollX;this.options.freeScroll=this.options.freeScroll&&!this.options.eventPassthrough;this.options.directionLockThreshold=this.options.eventPassthrough?0:this.options.directionLockThreshold;this.options.bounceEasing=typeof this.options.bounceEasing=="string"?utils.ease[this.options.bounceEasing]||utils.ease.circular:this.options.bounceEasing;this.options.resizePolling=this.options.resizePolling===undefined?60:this.options.resizePolling;if(this.options.tap===true){this.options.tap="tap"}this.options.invertWheelDirection=this.options.invertWheelDirection?-1:1;if(this.options.infiniteElements){this.options.probeType=3}this.options.infiniteUseTransform=this.options.infiniteUseTransform&&this.options.useTransform;if(this.options.probeType==3){this.options.useTransition=false}this.x=0;this.y=0;this.directionX=0;this.directionY=0;this._events={};this._init();this.refresh();this.scrollTo(this.options.startX,this.options.startY);this.enable()}IScroll.prototype={version:"5.2.0",_init:function(){this._initEvents();if(this.options.mouseWheel){this._initWheel()}if(this.options.snap){this._initSnap()}if(this.options.keyBindings){this._initKeys()}if(this.options.infiniteElements){this._initInfinite()}},destroy:function(){this._initEvents(true);clearTimeout(this.resizeTimeout);this.resizeTimeout=null;this._execEvent("destroy")},_transitionEnd:function(e){if(e.target!=this.scroller||!this.isInTransition){return}this._transitionTime();if(!this.resetPosition(this.options.bounceTime)){this.isInTransition=false;this._execEvent("scrollEnd")}},_start:function(e){if(utils.eventType[e.type]!=1){var button;if(!e.which){button=e.button<2?0:e.button==4?1:2}else{button=e.button}if(button!==0){return}}if(!this.enabled||this.initiated&&utils.eventType[e.type]!==this.initiated){return}if(this.options.preventDefault&&!utils.isBadAndroid&&!utils.preventDefaultException(e.target,this.options.preventDefaultException)){e.preventDefault()}var point=e.touches?e.touches[0]:e,pos;this.initiated=utils.eventType[e.type];this.moved=false;this.distX=0;this.distY=0;this.directionX=0;this.directionY=0;this.directionLocked=0;this.startTime=utils.getTime();if(this.options.useTransition&&this.isInTransition){this._transitionTime();this.isInTransition=false;pos=this.getComputedPosition();this._translate(Math.round(pos.x),Math.round(pos.y));this._execEvent("scrollEnd")}else if(!this.options.useTransition&&this.isAnimating){this.isAnimating=false;this._execEvent("scrollEnd")}this.startX=this.x;this.startY=this.y;this.absStartX=this.x;this.absStartY=this.y;this.pointX=point.pageX;this.pointY=point.pageY;this._execEvent("beforeScrollStart")},_move:function(e){if(!this.enabled||utils.eventType[e.type]!==this.initiated){return}if(this.options.preventDefault){e.preventDefault()}var point=e.touches?e.touches[0]:e,deltaX=point.pageX-this.pointX,deltaY=point.pageY-this.pointY,timestamp=utils.getTime(),newX,newY,absDistX,absDistY;this.pointX=point.pageX;this.pointY=point.pageY;this.distX+=deltaX;this.distY+=deltaY;absDistX=Math.abs(this.distX);absDistY=Math.abs(this.distY);if(timestamp-this.endTime>300&&(absDistX<10&&absDistY<10)){return}if(!this.directionLocked&&!this.options.freeScroll){if(absDistX>absDistY+this.options.directionLockThreshold){this.directionLocked="h"}else if(absDistY>=absDistX+this.options.directionLockThreshold){this.directionLocked="v"}else{this.directionLocked="n"}}if(this.directionLocked=="h"){if(this.options.eventPassthrough=="vertical"){e.preventDefault()}else if(this.options.eventPassthrough=="horizontal"){this.initiated=false;return}deltaY=0}else if(this.directionLocked=="v"){if(this.options.eventPassthrough=="horizontal"){e.preventDefault()}else if(this.options.eventPassthrough=="vertical"){this.initiated=false;return}deltaX=0}deltaX=this.hasHorizontalScroll?deltaX:0;deltaY=this.hasVerticalScroll?deltaY:0;newX=this.x+deltaX;newY=this.y+deltaY;if(newX>0||newX<this.maxScrollX){newX=this.options.bounce?this.x+deltaX/3:newX>0?0:this.maxScrollX}if(newY>0||newY<this.maxScrollY){newY=this.options.bounce?this.y+deltaY/3:newY>0?0:this.maxScrollY}this.directionX=deltaX>0?-1:deltaX<0?1:0;this.directionY=deltaY>0?-1:deltaY<0?1:0;if(!this.moved){this._execEvent("scrollStart")}this.moved=true;this._translate(newX,newY);if(timestamp-this.startTime>300){this.startTime=timestamp;this.startX=this.x;this.startY=this.y;if(this.options.probeType==1){this._execEvent("scroll")}}if(this.options.probeType>1){this._execEvent("scroll")}},_end:function(e){if(!this.enabled||utils.eventType[e.type]!==this.initiated){return}if(this.options.preventDefault&&!utils.preventDefaultException(e.target,this.options.preventDefaultException)){e.preventDefault()}var point=e.changedTouches?e.changedTouches[0]:e,momentumX,momentumY,duration=utils.getTime()-this.startTime,newX=Math.round(this.x),newY=Math.round(this.y),distanceX=Math.abs(newX-this.startX),distanceY=Math.abs(newY-this.startY),time=0,easing="";this.isInTransition=0;this.initiated=0;this.endTime=utils.getTime();if(this.resetPosition(this.options.bounceTime)){return}this.scrollTo(newX,newY);if(!this.moved){if(this.options.tap){utils.tap(e,this.options.tap)}if(this.options.click){utils.click(e)}this._execEvent("scrollCancel");return}if(this._events.flick&&duration<200&&distanceX<100&&distanceY<100){this._execEvent("flick");return}if(this.options.momentum&&duration<300){momentumX=this.hasHorizontalScroll?utils.momentum(this.x,this.startX,duration,this.maxScrollX,this.options.bounce?this.wrapperWidth:0,this.options.deceleration):{destination:newX,duration:0};momentumY=this.hasVerticalScroll?utils.momentum(this.y,this.startY,duration,this.maxScrollY,this.options.bounce?this.wrapperHeight:0,this.options.deceleration):{destination:newY,duration:0};newX=momentumX.destination;newY=momentumY.destination;time=Math.max(momentumX.duration,momentumY.duration);this.isInTransition=1}if(this.options.snap){var snap=this._nearestSnap(newX,newY);this.currentPage=snap;time=this.options.snapSpeed||Math.max(Math.max(Math.min(Math.abs(newX-snap.x),1e3),Math.min(Math.abs(newY-snap.y),1e3)),300);newX=snap.x;newY=snap.y;this.directionX=0;this.directionY=0;easing=this.options.bounceEasing}if(newX!=this.x||newY!=this.y){if(newX>0||newX<this.maxScrollX||newY>0||newY<this.maxScrollY){easing=utils.ease.quadratic}this.scrollTo(newX,newY,time,easing);return}this._execEvent("scrollEnd")},_resize:function(){var that=this;clearTimeout(this.resizeTimeout);this.resizeTimeout=setTimeout(function(){that.refresh()},this.options.resizePolling)},resetPosition:function(time){var x=this.x,y=this.y;time=time||0;if(!this.hasHorizontalScroll||this.x>0){x=0}else if(this.x<this.maxScrollX){x=this.maxScrollX}if(!this.hasVerticalScroll||this.y>0){y=0}else if(this.y<this.maxScrollY){y=this.maxScrollY}if(x==this.x&&y==this.y){return false}this.scrollTo(x,y,time,this.options.bounceEasing);return true},disable:function(){this.enabled=false},enable:function(){this.enabled=true},refresh:function(){var rf=this.wrapper.offsetHeight;this.wrapperWidth=this.wrapper.clientWidth;this.wrapperHeight=this.wrapper.clientHeight;this.scrollerWidth=this.scroller.offsetWidth;this.scrollerHeight=this.scroller.offsetHeight;this.maxScrollX=this.wrapperWidth-this.scrollerWidth;var limit;if(this.options.infiniteElements){this.options.infiniteLimit=this.options.infiniteLimit||Math.floor(2147483645/this.infiniteElementHeight);limit=-this.options.infiniteLimit*this.infiniteElementHeight+this.wrapperHeight}this.maxScrollY=limit!==undefined?limit:this.wrapperHeight-this.scrollerHeight;this.hasHorizontalScroll=this.options.scrollX&&this.maxScrollX<0;this.hasVerticalScroll=this.options.scrollY&&this.maxScrollY<0;if(!this.hasHorizontalScroll){this.maxScrollX=0;this.scrollerWidth=this.wrapperWidth}if(!this.hasVerticalScroll){this.maxScrollY=0;this.scrollerHeight=this.wrapperHeight}this.endTime=0;this.directionX=0;this.directionY=0;this.wrapperOffset=utils.offset(this.wrapper);this._execEvent("refresh");this.resetPosition()},on:function(type,fn){if(!this._events[type]){this._events[type]=[]}this._events[type].push(fn)},off:function(type,fn){if(!this._events[type]){return}var index=this._events[type].indexOf(fn);if(index>-1){this._events[type].splice(index,1)}},_execEvent:function(type){if(!this._events[type]){return}var i=0,l=this._events[type].length;if(!l){return}for(;i<l;i++){this._events[type][i].apply(this,[].slice.call(arguments,1))}},scrollBy:function(x,y,time,easing){x=this.x+x;y=this.y+y;time=time||0;this.scrollTo(x,y,time,easing)},scrollTo:function(x,y,time,easing){easing=easing||utils.ease.circular;this.isInTransition=this.options.useTransition&&time>0;var transitionType=this.options.useTransition&&easing.style;if(!time||transitionType){if(transitionType){this._transitionTimingFunction(easing.style);this._transitionTime(time)}this._translate(x,y)}else{this._animate(x,y,time,easing.fn)}},scrollToElement:function(el,time,offsetX,offsetY,easing){el=el.nodeType?el:this.scroller.querySelector(el);if(!el){return}var pos=utils.offset(el);pos.left-=this.wrapperOffset.left;pos.top-=this.wrapperOffset.top;if(offsetX===true){offsetX=Math.round(el.offsetWidth/2-this.wrapper.offsetWidth/2)}if(offsetY===true){offsetY=Math.round(el.offsetHeight/2-this.wrapper.offsetHeight/2)}pos.left-=offsetX||0;pos.top-=offsetY||0;pos.left=pos.left>0?0:pos.left<this.maxScrollX?this.maxScrollX:pos.left;pos.top=pos.top>0?0:pos.top<this.maxScrollY?this.maxScrollY:pos.top;time=time===undefined||time===null||time==="auto"?Math.max(Math.abs(this.x-pos.left),Math.abs(this.y-pos.top)):time;this.scrollTo(pos.left,pos.top,time,easing)},_transitionTime:function(time){time=time||0;var durationProp=utils.style.transitionDuration;this.scrollerStyle[durationProp]=time+"ms";if(!time&&utils.isBadAndroid){this.scrollerStyle[durationProp]="0.0001ms";var self=this;rAF(function(){if(self.scrollerStyle[durationProp]==="0.0001ms"){self.scrollerStyle[durationProp]="0s"}})}},_transitionTimingFunction:function(easing){this.scrollerStyle[utils.style.transitionTimingFunction]=easing},_translate:function(x,y){if(this.options.useTransform){this.scrollerStyle[utils.style.transform]="translate("+x+"px,"+y+"px)"+this.translateZ}else{x=Math.round(x);y=Math.round(y);this.scrollerStyle.left=x+"px";this.scrollerStyle.top=y+"px"}this.x=x;this.y=y},_initEvents:function(remove){var eventType=remove?utils.removeEvent:utils.addEvent,target=this.options.bindToWrapper?this.wrapper:window;eventType(window,"orientationchange",this);eventType(window,"resize",this);if(this.options.click){eventType(this.wrapper,"click",this,true)}if(!this.options.disableMouse){eventType(this.wrapper,"mousedown",this);eventType(target,"mousemove",this);eventType(target,"mousecancel",this);eventType(target,"mouseup",this)}if(utils.hasPointer&&!this.options.disablePointer){eventType(this.wrapper,utils.prefixPointerEvent("pointerdown"),this);eventType(target,utils.prefixPointerEvent("pointermove"),this);eventType(target,utils.prefixPointerEvent("pointercancel"),this);eventType(target,utils.prefixPointerEvent("pointerup"),this)}if(utils.hasTouch&&!this.options.disableTouch){eventType(this.wrapper,"touchstart",this);eventType(target,"touchmove",this);eventType(target,"touchcancel",this);eventType(target,"touchend",this)}eventType(this.scroller,"transitionend",this);eventType(this.scroller,"webkitTransitionEnd",this);eventType(this.scroller,"oTransitionEnd",this);eventType(this.scroller,"MSTransitionEnd",this)},getComputedPosition:function(){var matrix=window.getComputedStyle(this.scroller,null),x,y;if(this.options.useTransform){matrix=matrix[utils.style.transform].split(")")[0].split(", ");x=+(matrix[12]||matrix[4]);y=+(matrix[13]||matrix[5])}else{x=+matrix.left.replace(/[^-\d.]/g,"");y=+matrix.top.replace(/[^-\d.]/g,"")}return{x:x,y:y}},_initWheel:function(){utils.addEvent(this.wrapper,"wheel",this);utils.addEvent(this.wrapper,"mousewheel",this);utils.addEvent(this.wrapper,"DOMMouseScroll",this);this.on("destroy",function(){clearTimeout(this.wheelTimeout);this.wheelTimeout=null;utils.removeEvent(this.wrapper,"wheel",this);utils.removeEvent(this.wrapper,"mousewheel",this);utils.removeEvent(this.wrapper,"DOMMouseScroll",this)})},_wheel:function(e){if(!this.enabled){return}e.preventDefault();var wheelDeltaX,wheelDeltaY,newX,newY,that=this;if(this.wheelTimeout===undefined){that._execEvent("scrollStart")}clearTimeout(this.wheelTimeout);this.wheelTimeout=setTimeout(function(){if(!that.options.snap){that._execEvent("scrollEnd")}that.wheelTimeout=undefined},400);if("deltaX"in e){if(e.deltaMode===1){wheelDeltaX=-e.deltaX*this.options.mouseWheelSpeed;wheelDeltaY=-e.deltaY*this.options.mouseWheelSpeed}else{wheelDeltaX=-e.deltaX;wheelDeltaY=-e.deltaY}}else if("wheelDeltaX"in e){wheelDeltaX=e.wheelDeltaX/120*this.options.mouseWheelSpeed;wheelDeltaY=e.wheelDeltaY/120*this.options.mouseWheelSpeed}else if("wheelDelta"in e){wheelDeltaX=wheelDeltaY=e.wheelDelta/120*this.options.mouseWheelSpeed}else if("detail"in e){wheelDeltaX=wheelDeltaY=-e.detail/3*this.options.mouseWheelSpeed}else{return}wheelDeltaX*=this.options.invertWheelDirection;wheelDeltaY*=this.options.invertWheelDirection;if(!this.hasVerticalScroll){wheelDeltaX=wheelDeltaY;wheelDeltaY=0}if(this.options.snap){newX=this.currentPage.pageX;newY=this.currentPage.pageY;if(wheelDeltaX>0){newX--}else if(wheelDeltaX<0){newX++}if(wheelDeltaY>0){newY--}else if(wheelDeltaY<0){newY++}this.goToPage(newX,newY);return}newX=this.x+Math.round(this.hasHorizontalScroll?wheelDeltaX:0);newY=this.y+Math.round(this.hasVerticalScroll?wheelDeltaY:0);this.directionX=wheelDeltaX>0?-1:wheelDeltaX<0?1:0;this.directionY=wheelDeltaY>0?-1:wheelDeltaY<0?1:0;if(newX>0){newX=0}else if(newX<this.maxScrollX){newX=this.maxScrollX}if(newY>0){newY=0}else if(newY<this.maxScrollY){newY=this.maxScrollY}this.scrollTo(newX,newY,0);if(this.options.probeType>1){this._execEvent("scroll")}},_initSnap:function(){this.currentPage={};if(typeof this.options.snap=="string"){this.options.snap=this.scroller.querySelectorAll(this.options.snap)}this.on("refresh",function(){var i=0,l,m=0,n,cx,cy,x=0,y,stepX=this.options.snapStepX||this.wrapperWidth,stepY=this.options.snapStepY||this.wrapperHeight,el;this.pages=[];if(!this.wrapperWidth||!this.wrapperHeight||!this.scrollerWidth||!this.scrollerHeight){return}if(this.options.snap===true){cx=Math.round(stepX/2);cy=Math.round(stepY/2);while(x>-this.scrollerWidth){this.pages[i]=[];l=0;y=0;while(y>-this.scrollerHeight){this.pages[i][l]={x:Math.max(x,this.maxScrollX),y:Math.max(y,this.maxScrollY),width:stepX,height:stepY,cx:x-cx,cy:y-cy};y-=stepY;l++}x-=stepX;i++}}else{el=this.options.snap;l=el.length;n=-1;for(;i<l;i++){if(i===0||el[i].offsetLeft<=el[i-1].offsetLeft){m=0;n++}if(!this.pages[m]){this.pages[m]=[]}x=Math.max(-el[i].offsetLeft,this.maxScrollX);y=Math.max(-el[i].offsetTop,this.maxScrollY);cx=x-Math.round(el[i].offsetWidth/2);cy=y-Math.round(el[i].offsetHeight/2);this.pages[m][n]={x:x,y:y,width:el[i].offsetWidth,height:el[i].offsetHeight,cx:cx,cy:cy};if(x>this.maxScrollX){m++}}}this.goToPage(this.currentPage.pageX||0,this.currentPage.pageY||0,0);if(this.options.snapThreshold%1===0){this.snapThresholdX=this.options.snapThreshold;this.snapThresholdY=this.options.snapThreshold}else{this.snapThresholdX=Math.round(this.pages[this.currentPage.pageX][this.currentPage.pageY].width*this.options.snapThreshold);this.snapThresholdY=Math.round(this.pages[this.currentPage.pageX][this.currentPage.pageY].height*this.options.snapThreshold)}});this.on("flick",function(){var time=this.options.snapSpeed||Math.max(Math.max(Math.min(Math.abs(this.x-this.startX),1e3),Math.min(Math.abs(this.y-this.startY),1e3)),300);this.goToPage(this.currentPage.pageX+this.directionX,this.currentPage.pageY+this.directionY,time)})},_nearestSnap:function(x,y){if(!this.pages.length){return{x:0,y:0,pageX:0,pageY:0}}var i=0,l=this.pages.length,m=0;if(Math.abs(x-this.absStartX)<this.snapThresholdX&&Math.abs(y-this.absStartY)<this.snapThresholdY){return this.currentPage}if(x>0){x=0}else if(x<this.maxScrollX){x=this.maxScrollX}if(y>0){y=0}else if(y<this.maxScrollY){y=this.maxScrollY}for(;i<l;i++){if(x>=this.pages[i][0].cx){x=this.pages[i][0].x;break}}l=this.pages[i].length;for(;m<l;m++){if(y>=this.pages[0][m].cy){y=this.pages[0][m].y;break}}if(i==this.currentPage.pageX){i+=this.directionX;if(i<0){i=0}else if(i>=this.pages.length){i=this.pages.length-1}x=this.pages[i][0].x}if(m==this.currentPage.pageY){m+=this.directionY;if(m<0){m=0}else if(m>=this.pages[0].length){m=this.pages[0].length-1}y=this.pages[0][m].y}return{x:x,y:y,pageX:i,pageY:m}},goToPage:function(x,y,time,easing){easing=easing||this.options.bounceEasing;if(x>=this.pages.length){x=this.pages.length-1}else if(x<0){x=0}if(y>=this.pages[x].length){y=this.pages[x].length-1}else if(y<0){y=0}var posX=this.pages[x][y].x,posY=this.pages[x][y].y;time=time===undefined?this.options.snapSpeed||Math.max(Math.max(Math.min(Math.abs(posX-this.x),1e3),Math.min(Math.abs(posY-this.y),1e3)),300):time;this.currentPage={x:posX,y:posY,pageX:x,pageY:y};this.scrollTo(posX,posY,time,easing)},next:function(time,easing){var x=this.currentPage.pageX,y=this.currentPage.pageY;x++;if(x>=this.pages.length&&this.hasVerticalScroll){x=0;y++}this.goToPage(x,y,time,easing)},prev:function(time,easing){var x=this.currentPage.pageX,y=this.currentPage.pageY;x--;if(x<0&&this.hasVerticalScroll){x=0;y--}this.goToPage(x,y,time,easing)},_initKeys:function(e){var keys={pageUp:33,pageDown:34,end:35,home:36,left:37,up:38,right:39,down:40};var i;if(typeof this.options.keyBindings=="object"){for(i in this.options.keyBindings){if(typeof this.options.keyBindings[i]=="string"){this.options.keyBindings[i]=this.options.keyBindings[i].toUpperCase().charCodeAt(0)}}}else{this.options.keyBindings={}}for(i in keys){this.options.keyBindings[i]=this.options.keyBindings[i]||keys[i]}utils.addEvent(window,"keydown",this);this.on("destroy",function(){utils.removeEvent(window,"keydown",this)})},_key:function(e){if(!this.enabled){return}var snap=this.options.snap,newX=snap?this.currentPage.pageX:this.x,newY=snap?this.currentPage.pageY:this.y,now=utils.getTime(),prevTime=this.keyTime||0,acceleration=.25,pos;if(this.options.useTransition&&this.isInTransition){pos=this.getComputedPosition();this._translate(Math.round(pos.x),Math.round(pos.y));this.isInTransition=false}this.keyAcceleration=now-prevTime<200?Math.min(this.keyAcceleration+acceleration,50):0;switch(e.keyCode){case this.options.keyBindings.pageUp:if(this.hasHorizontalScroll&&!this.hasVerticalScroll){newX+=snap?1:this.wrapperWidth}else{newY+=snap?1:this.wrapperHeight}break;case this.options.keyBindings.pageDown:if(this.hasHorizontalScroll&&!this.hasVerticalScroll){newX-=snap?1:this.wrapperWidth}else{newY-=snap?1:this.wrapperHeight}break;case this.options.keyBindings.end:newX=snap?this.pages.length-1:this.maxScrollX;newY=snap?this.pages[0].length-1:this.maxScrollY;break;case this.options.keyBindings.home:newX=0;newY=0;break;case this.options.keyBindings.left:newX+=snap?-1:5+this.keyAcceleration>>0;break;case this.options.keyBindings.up:newY+=snap?1:5+this.keyAcceleration>>0;break;case this.options.keyBindings.right:newX-=snap?-1:5+this.keyAcceleration>>0;break;case this.options.keyBindings.down:newY-=snap?1:5+this.keyAcceleration>>0;break;default:return}if(snap){this.goToPage(newX,newY);return}if(newX>0){newX=0;this.keyAcceleration=0}else if(newX<this.maxScrollX){newX=this.maxScrollX;this.keyAcceleration=0}if(newY>0){newY=0;this.keyAcceleration=0}else if(newY<this.maxScrollY){newY=this.maxScrollY;this.keyAcceleration=0}this.scrollTo(newX,newY,0);this.keyTime=now},_animate:function(destX,destY,duration,easingFn){var that=this,startX=this.x,startY=this.y,startTime=utils.getTime(),destTime=startTime+duration;function step(){var now=utils.getTime(),newX,newY,easing;if(now>=destTime){that.isAnimating=false;that._translate(destX,destY);if(!that.resetPosition(that.options.bounceTime)){that._execEvent("scrollEnd")}return}now=(now-startTime)/duration;easing=easingFn(now);newX=(destX-startX)*easing+startX;newY=(destY-startY)*easing+startY;that._translate(newX,newY);if(that.isAnimating){rAF(step)}if(that.options.probeType==3){that._execEvent("scroll")}}this.isAnimating=true;step()},_initInfinite:function(){var el=this.options.infiniteElements;this.infiniteElements=typeof el=="string"?document.querySelectorAll(el):el;this.infiniteLength=this.infiniteElements.length;this.infiniteMaster=this.infiniteElements[0];this.infiniteElementHeight=this.infiniteMaster.offsetHeight;this.infiniteHeight=this.infiniteLength*this.infiniteElementHeight;this.options.cacheSize=this.options.cacheSize||1e3;this.infiniteCacheBuffer=Math.round(this.options.cacheSize/4);this.options.dataset.call(this,0,this.options.cacheSize);this.on("refresh",function(){var elementsPerPage=Math.ceil(this.wrapperHeight/this.infiniteElementHeight);this.infiniteUpperBufferSize=Math.floor((this.infiniteLength-elementsPerPage)/2);this.reorderInfinite()});this.on("scroll",this.reorderInfinite)},reorderInfinite:function(){var center=-this.y+this.wrapperHeight/2;var minorPhase=Math.max(Math.floor(-this.y/this.infiniteElementHeight)-this.infiniteUpperBufferSize,0),majorPhase=Math.floor(minorPhase/this.infiniteLength),phase=minorPhase-majorPhase*this.infiniteLength;var top=0;var i=0;var update=[];var cachePhase=Math.floor(minorPhase/this.infiniteCacheBuffer);while(i<this.infiniteLength){top=i*this.infiniteElementHeight+majorPhase*this.infiniteHeight;if(phase>i){top+=this.infiniteElementHeight*this.infiniteLength}if(this.infiniteElements[i]._top!==top){this.infiniteElements[i]._phase=top/this.infiniteElementHeight;if(this.infiniteElements[i]._phase<this.options.infiniteLimit){this.infiniteElements[i]._top=top;if(this.options.infiniteUseTransform){this.infiniteElements[i].style[utils.style.transform]="translate(0, "+top+"px)"+this.translateZ}else{this.infiniteElements[i].style.top=top+"px"}update.push(this.infiniteElements[i])}}i++}if(this.cachePhase!=cachePhase&&(cachePhase===0||minorPhase-this.infiniteCacheBuffer>0)){this.options.dataset.call(this,Math.max(cachePhase*this.infiniteCacheBuffer-this.infiniteCacheBuffer,0),this.options.cacheSize)}this.cachePhase=cachePhase;this.updateContent(update)},updateContent:function(els){if(this.infiniteCache===undefined){return}for(var i=0,l=els.length;i<l;i++){this.options.dataFiller.call(this,els[i],this.infiniteCache[els[i]._phase])}},updateCache:function(start,data){var firstRun=this.infiniteCache===undefined;this.infiniteCache={};for(var i=0,l=data.length;i<l;i++){this.infiniteCache[start++]=data[i]}if(firstRun){this.updateContent(this.infiniteElements)}},handleEvent:function(e){switch(e.type){case"touchstart":case"pointerdown":case"MSPointerDown":case"mousedown":this._start(e);break;case"touchmove":case"pointermove":case"MSPointerMove":case"mousemove":this._move(e);break;case"touchend":case"pointerup":case"MSPointerUp":case"mouseup":case"touchcancel":case"pointercancel":case"MSPointerCancel":case"mousecancel":this._end(e);break;case"orientationchange":case"resize":this._resize();break;case"transitionend":case"webkitTransitionEnd":case"oTransitionEnd":case"MSTransitionEnd":this._transitionEnd(e);break;case"wheel":case"DOMMouseScroll":case"mousewheel":this._wheel(e);break;case"keydown":this._key(e);break;case"click":if(this.enabled&&!e._constructed){e.preventDefault();e.stopPropagation()}break}}};IScroll.utils=utils;if(typeof module!="undefined"&&module.exports){module.exports=IScroll}else if(typeof define=="function"&&define.amd){define(function(){return IScroll})}else{window.IScroll=IScroll}})(window,document,Math);