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8 lines
13 KiB
JavaScript
8 lines
13 KiB
JavaScript
/*! Hammer.JS - v1.1.2 - 2014-04-25
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* http://eightmedia.github.io/hammer.js
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*
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* Copyright (c) 2014 Jorik Tangelder <j.tangelder@gmail.com>;
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* Licensed under the MIT license */
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!function(a,b){"use strict";function c(){d.READY||(s.determineEventTypes(),r.each(d.gestures,function(a){u.register(a)}),s.onTouch(d.DOCUMENT,n,u.detect),s.onTouch(d.DOCUMENT,o,u.detect),d.READY=!0)}var d=function v(a,b){return new v.Instance(a,b||{})};d.VERSION="1.1.2",d.defaults={behavior:{userSelect:"none",touchAction:"none",touchCallout:"none",contentZooming:"none",userDrag:"none",tapHighlightColor:"rgba(0,0,0,0)"}},d.DOCUMENT=document,d.HAS_POINTEREVENTS=navigator.pointerEnabled||navigator.msPointerEnabled,d.HAS_TOUCHEVENTS="ontouchstart"in a,d.IS_MOBILE=/mobile|tablet|ip(ad|hone|od)|android|silk/i.test(navigator.userAgent),d.NO_MOUSEEVENTS=d.HAS_TOUCHEVENTS&&d.IS_MOBILE||d.HAS_POINTEREVENTS,d.CALCULATE_INTERVAL=25;var e={},f=d.DIRECTION_DOWN="down",g=d.DIRECTION_LEFT="left",h=d.DIRECTION_UP="up",i=d.DIRECTION_RIGHT="right",j=d.POINTER_MOUSE="mouse",k=d.POINTER_TOUCH="touch",l=d.POINTER_PEN="pen",m=d.EVENT_START="start",n=d.EVENT_MOVE="move",o=d.EVENT_END="end",p=d.EVENT_RELEASE="release",q=d.EVENT_TOUCH="touch";d.READY=!1,d.plugins=d.plugins||{},d.gestures=d.gestures||{};var r=d.utils={extend:function(a,c,d){for(var e in c)!c.hasOwnProperty(e)||a[e]!==b&&d||(a[e]=c[e]);return a},on:function(a,b,c){a.addEventListener(b,c,!1)},off:function(a,b,c){a.removeEventListener(b,c,!1)},each:function(a,c,d){var e,f;if("forEach"in a)a.forEach(c,d);else if(a.length!==b){for(e=0,f=a.length;f>e;e++)if(c.call(d,a[e],e,a)===!1)return}else for(e in a)if(a.hasOwnProperty(e)&&c.call(d,a[e],e,a)===!1)return},inStr:function(a,b){return a.indexOf(b)>-1},inArray:function(a,b){if(a.indexOf){var c=a.indexOf(b);return-1===c?!1:c}for(var d=0,e=a.length;e>d;d++)if(a[d]===b)return d;return!1},toArray:function(a){return Array.prototype.slice.call(a,0)},hasParent:function(a,b){for(;a;){if(a==b)return!0;a=a.parentNode}return!1},getCenter:function(a){var b=[],c=[],d=[],e=[],f=Math.min,g=Math.max;return 1===a.length?{pageX:a[0].pageX,pageY:a[0].pageY,clientX:a[0].clientX,clientY:a[0].clientY}:(r.each(a,function(a){b.push(a.pageX),c.push(a.pageY),d.push(a.clientX),e.push(a.clientY)}),{pageX:(f.apply(Math,b)+g.apply(Math,b))/2,pageY:(f.apply(Math,c)+g.apply(Math,c))/2,clientX:(f.apply(Math,d)+g.apply(Math,d))/2,clientY:(f.apply(Math,e)+g.apply(Math,e))/2})},getVelocity:function(a,b,c){return{x:Math.abs(b/a)||0,y:Math.abs(c/a)||0}},getAngle:function(a,b){var c=b.clientX-a.clientX,d=b.clientY-a.clientY;return 180*Math.atan2(d,c)/Math.PI},getDirection:function(a,b){var c=Math.abs(a.clientX-b.clientX),d=Math.abs(a.clientY-b.clientY);return c>=d?a.clientX-b.clientX>0?g:i:a.clientY-b.clientY>0?h:f},getDistance:function(a,b){var c=b.clientX-a.clientX,d=b.clientY-a.clientY;return Math.sqrt(c*c+d*d)},getScale:function(a,b){return a.length>=2&&b.length>=2?this.getDistance(b[0],b[1])/this.getDistance(a[0],a[1]):1},getRotation:function(a,b){return a.length>=2&&b.length>=2?this.getAngle(b[1],b[0])-this.getAngle(a[1],a[0]):0},isVertical:function(a){return a==h||a==f},setPrefixedCss:function(a,b,c,d){var e=["","Webkit","Moz","O","ms"];b=r.toCamelCase(b);for(var f=0;f<e.length;f++){var g=b;if(e[f]&&(g=e[f]+g.slice(0,1).toUpperCase()+g.slice(1)),g in a.style){a.style[g]=(null==d||d)&&c||"";break}}},toggleBehavior:function(a,b,c){if(b&&a&&a.style){r.each(b,function(b,d){r.setPrefixedCss(a,d,b,c)});var d=c&&function(){return!1};"none"==b.userSelect&&(a.onselectstart=d),"none"==b.userDrag&&(a.ondragstart=d)}},toCamelCase:function(a){return a.replace(/[_-]([a-z])/g,function(a){return a[1].toUpperCase()})}},s=d.event={preventMouseEvents:!1,started:!1,shouldDetect:!1,on:function(a,b,c,d){var e=b.split(" ");r.each(e,function(b){r.on(a,b,c),d&&d(b)})},off:function(a,b,c,d){var e=b.split(" ");r.each(e,function(b){r.off(a,b,c),d&&d(b)})},onTouch:function(a,b,c){var f=this,g=function(e){var g,h=e.type.toLowerCase(),i=d.HAS_POINTEREVENTS,j=r.inStr(h,"mouse");j&&f.preventMouseEvents||(j&&b==m&&0===e.button?(f.preventMouseEvents=!1,f.shouldDetect=!0):i&&b==m?f.shouldDetect=1===e.buttons:j||b!=m||(f.preventMouseEvents=!0,f.shouldDetect=!0),i&&b!=o&&t.updatePointer(b,e),f.shouldDetect&&(g=f.doDetect.call(f,e,b,a,c)),g==o&&(f.preventMouseEvents=!1,f.shouldDetect=!1,t.reset()),i&&b==o&&t.updatePointer(b,e))};return this.on(a,e[b],g),g},doDetect:function(a,b,c,d){var e=this.getTouchList(a,b),f=e.length,g=b,h=e.trigger,i=f;b==m?h=q:b==o&&(h=p,i=e.length-(a.changedTouches?a.changedTouches.length:1)),i>0&&this.started&&(g=n),this.started=!0;var j=this.collectEventData(c,g,e,a);return b!=o&&d.call(u,j),h&&(j.changedLength=i,j.eventType=h,d.call(u,j),j.eventType=g,delete j.changedLength),g==o&&(d.call(u,j),this.started=!1),g},determineEventTypes:function(){var b;return b=d.HAS_POINTEREVENTS?a.PointerEvent?["pointerdown","pointermove","pointerup pointercancel lostpointercapture"]:["MSPointerDown","MSPointerMove","MSPointerUp MSPointerCancel MSLostPointerCapture"]:d.NO_MOUSEEVENTS?["touchstart","touchmove","touchend touchcancel"]:["touchstart mousedown","touchmove mousemove","touchend touchcancel mouseup"],e[m]=b[0],e[n]=b[1],e[o]=b[2],e},getTouchList:function(a,b){if(d.HAS_POINTEREVENTS)return t.getTouchList();if(a.touches){if(b==n)return a.touches;var c=[],e=[].concat(r.toArray(a.touches),r.toArray(a.changedTouches)),f=[];return r.each(e,function(a){r.inArray(c,a.identifier)===!1&&f.push(a),c.push(a.identifier)}),f}return a.identifier=1,[a]},collectEventData:function(a,b,c,d){var e=k;return r.inStr(d.type,"mouse")||t.matchType(j,d)?e=j:t.matchType(l,d)&&(e=l),{center:r.getCenter(c),timeStamp:Date.now(),target:d.target,touches:c,eventType:b,pointerType:e,srcEvent:d,preventDefault:function(){var a=this.srcEvent;a.preventManipulation&&a.preventManipulation(),a.preventDefault&&a.preventDefault()},stopPropagation:function(){this.srcEvent.stopPropagation()},stopDetect:function(){return u.stopDetect()}}}},t=d.PointerEvent={pointers:{},getTouchList:function(){var a=[];return r.each(this.pointers,function(b){a.push(b)}),a},updatePointer:function(a,b){a==o||a!=o&&1!==b.buttons?delete this.pointers[b.pointerId]:(b.identifier=b.pointerId,this.pointers[b.pointerId]=b)},matchType:function(a,b){if(!b.pointerType)return!1;var c=b.pointerType,d={};return d[j]=c===(b.MSPOINTER_TYPE_MOUSE||j),d[k]=c===(b.MSPOINTER_TYPE_TOUCH||k),d[l]=c===(b.MSPOINTER_TYPE_PEN||l),d[a]},reset:function(){this.pointers={}}},u=d.detection={gestures:[],current:null,previous:null,stopped:!1,startDetect:function(a,b){this.current||(this.stopped=!1,this.current={inst:a,startEvent:r.extend({},b),lastEvent:!1,lastCalcEvent:!1,futureCalcEvent:!1,lastCalcData:{},name:""},this.detect(b))},detect:function(a){if(this.current&&!this.stopped){a=this.extendEventData(a);var b=this.current.inst,c=b.options;return r.each(this.gestures,function(d){return!this.stopped&&b.enabled&&c[d.name]&&d.handler.call(d,a,b)===!1?(this.stopDetect(),!1):void 0},this),this.current&&(this.current.lastEvent=a),a.eventType==o&&this.stopDetect(),a}},stopDetect:function(){this.previous=r.extend({},this.current),this.current=null,this.stopped=!0},getCalculatedData:function(a,b,c,e,f){var g=this.current,h=!1,i=g.lastCalcEvent,j=g.lastCalcData;i&&a.timeStamp-i.timeStamp>d.CALCULATE_INTERVAL&&(b=i.center,c=a.timeStamp-i.timeStamp,e=a.center.clientX-i.center.clientX,f=a.center.clientY-i.center.clientY,h=!0),(a.eventType==q||a.eventType==p)&&(g.futureCalcEvent=a),(!g.lastCalcEvent||h)&&(j.velocity=r.getVelocity(c,e,f),j.angle=r.getAngle(b,a.center),j.direction=r.getDirection(b,a.center),g.lastCalcEvent=g.futureCalcEvent||a,g.futureCalcEvent=a),a.velocityX=j.velocity.x,a.velocityY=j.velocity.y,a.interimAngle=j.angle,a.interimDirection=j.direction},extendEventData:function(a){var b=this.current,c=b.startEvent,d=b.lastEvent||c;(a.eventType==q||a.eventType==p)&&(c.touches=[],r.each(a.touches,function(a){c.touches.push({clientX:a.clientX,clientY:a.clientY})}));var e=a.timeStamp-c.timeStamp,f=a.center.clientX-c.center.clientX,g=a.center.clientY-c.center.clientY;return this.getCalculatedData(a,d.center,e,f,g),r.extend(a,{startEvent:c,deltaTime:e,deltaX:f,deltaY:g,distance:r.getDistance(c.center,a.center),angle:r.getAngle(c.center,a.center),direction:r.getDirection(c.center,a.center),scale:r.getScale(c.touches,a.touches),rotation:r.getRotation(c.touches,a.touches)}),a},register:function(a){var c=a.defaults||{};return c[a.name]===b&&(c[a.name]=!0),r.extend(d.defaults,c,!0),a.index=a.index||1e3,this.gestures.push(a),this.gestures.sort(function(a,b){return a.index<b.index?-1:a.index>b.index?1:0}),this.gestures}};d.Instance=function(a,b){var e=this;c(),this.element=a,this.enabled=!0,r.each(b,function(a,c){delete b[c],b[r.toCamelCase(c)]=a}),this.options=r.extend(r.extend({},d.defaults),b||{}),this.options.behavior&&r.toggleBehavior(this.element,this.options.behavior,!0),this.eventStartHandler=s.onTouch(a,m,function(a){e.enabled&&a.eventType==m?u.startDetect(e,a):a.eventType==q&&u.detect(a)}),this.eventHandlers=[]},d.Instance.prototype={on:function(a,b){var c=this;return s.on(c.element,a,b,function(a){c.eventHandlers.push({gesture:a,handler:b})}),c},off:function(a,b){var c=this;return s.off(c.element,a,b,function(a){var d=r.inArray({gesture:a,handler:b});d!==!1&&c.eventHandlers.splice(d,1)}),c},trigger:function(a,b){b||(b={});var c=d.DOCUMENT.createEvent("Event");c.initEvent(a,!0,!0),c.gesture=b;var e=this.element;return r.hasParent(b.target,e)&&(e=b.target),e.dispatchEvent(c),this},enable:function(a){return this.enabled=a,this},dispose:function(){var a,b;for(r.toggleBehavior(this.element,this.options.behavior,!1),a=-1;b=this.eventHandlers[++a];)r.off(this.element,b.gesture,b.handler);return this.eventHandlers=[],s.off(this.element,e[m],this.eventStartHandler),null}},function(a){function b(b,d){var e=u.current;if(!(d.options.dragMaxTouches>0&&b.touches.length>d.options.dragMaxTouches))switch(b.eventType){case m:c=!1;break;case n:if(b.distance<d.options.dragMinDistance&&e.name!=a)return;var j=e.startEvent.center;if(e.name!=a&&(e.name=a,d.options.dragDistanceCorrection&&b.distance>0)){var k=Math.abs(d.options.dragMinDistance/b.distance);j.pageX+=b.deltaX*k,j.pageY+=b.deltaY*k,j.clientX+=b.deltaX*k,j.clientY+=b.deltaY*k,b=u.extendEventData(b)}(e.lastEvent.dragLockToAxis||d.options.dragLockToAxis&&d.options.dragLockMinDistance<=b.distance)&&(b.dragLockToAxis=!0);var l=e.lastEvent.direction;b.dragLockToAxis&&l!==b.direction&&(b.direction=r.isVertical(l)?b.deltaY<0?h:f:b.deltaX<0?g:i),c||(d.trigger(a+"start",b),c=!0),d.trigger(a,b),d.trigger(a+b.direction,b);var q=r.isVertical(b.direction);(d.options.dragBlockVertical&&q||d.options.dragBlockHorizontal&&!q)&&b.preventDefault();break;case p:c&&b.changedLength<=d.options.dragMaxTouches&&(d.trigger(a+"end",b),c=!1);break;case o:c=!1}}var c=!1;d.gestures.Drag={name:a,index:50,handler:b,defaults:{dragMinDistance:10,dragDistanceCorrection:!0,dragMaxTouches:1,dragBlockHorizontal:!1,dragBlockVertical:!1,dragLockToAxis:!1,dragLockMinDistance:25}}}("drag"),d.gestures.Gesture={name:"gesture",index:1337,handler:function(a,b){b.trigger(this.name,a)}},function(a){function b(b,d){var e=d.options,f=u.current;switch(b.eventType){case m:clearTimeout(c),f.name=a,c=setTimeout(function(){f&&f.name==a&&d.trigger(a,b)},e.holdTimeout);break;case n:b.distance>e.holdThreshold&&clearTimeout(c);break;case p:clearTimeout(c)}}var c;d.gestures.Hold={name:a,index:10,defaults:{holdTimeout:500,holdThreshold:2},handler:b}}("hold"),d.gestures.Release={name:"release",index:1/0,handler:function(a,b){a.eventType==p&&b.trigger(this.name,a)}},d.gestures.Swipe={name:"swipe",index:40,defaults:{swipeMinTouches:1,swipeMaxTouches:1,swipeVelocityX:.6,swipeVelocityY:.6},handler:function(a,b){if(a.eventType==p){var c=a.touches.length,d=b.options;if(c<d.swipeMinTouches||c>d.swipeMaxTouches)return;(a.velocityX>d.swipeVelocityX||a.velocityY>d.swipeVelocityY)&&(b.trigger(this.name,a),b.trigger(this.name+a.direction,a))}}},function(a){function b(b,d){var e,f,g=d.options,h=u.current,i=u.previous;switch(b.eventType){case m:c=!1;break;case n:c=c||b.distance>g.tapMaxDistance;break;case o:"touchcancel"!=b.srcEvent.type&&b.deltaTime<g.tapMaxTime&&!c&&(e=i&&i.lastEvent&&b.timeStamp-i.lastEvent.timeStamp,f=!1,i&&i.name==a&&e&&e<g.doubleTapInterval&&b.distance<g.doubleTapDistance&&(d.trigger("doubletap",b),f=!0),(!f||g.tapAlways)&&(h.name=a,d.trigger(h.name,b)))}}var c=!1;d.gestures.Tap={name:a,index:100,handler:b,defaults:{tapMaxTime:250,tapMaxDistance:10,tapAlways:!0,doubleTapDistance:20,doubleTapInterval:300}}}("tap"),d.gestures.Touch={name:"touch",index:-1/0,defaults:{preventDefault:!1,preventMouse:!1},handler:function(a,b){return b.options.preventMouse&&a.pointerType==j?void a.stopDetect():(b.options.preventDefault&&a.preventDefault(),void(a.eventType==q&&b.trigger("touch",a)))}},function(a){function b(b,d){switch(b.eventType){case m:c=!1;break;case n:if(b.touches.length<2)return;var e=Math.abs(1-b.scale),f=Math.abs(b.rotation);if(e<d.options.transformMinScale&&f<d.options.transformMinRotation)return;u.current.name=a,c||(d.trigger(a+"start",b),c=!0),d.trigger(a,b),f>d.options.transformMinRotation&&d.trigger("rotate",b),e>d.options.transformMinScale&&(d.trigger("pinch",b),d.trigger("pinch"+(b.scale<1?"in":"out"),b));break;case p:c&&b.changedLength<2&&(d.trigger(a+"end",b),c=!1)}}var c=!1;d.gestures.Transform={name:a,index:45,defaults:{transformMinScale:.01,transformMinRotation:1},handler:b}}("transform"),"function"==typeof define&&define.amd?define(function(){return d}):"undefined"!=typeof module&&module.exports?module.exports=d:a.Hammer=d}(window);
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