img-viewer-react/index.umd.js

image viewer for react

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e=this.options.rect,o=e.size,i=e.position,s=window.getComputedStyle(this.wrapper,null).position==="static",n=ht(this.wrapper);this.wrapperSize=this.wrapper[o==="width"?"clientWidth":"clientHeight"],this.setContent(t);var a=ht(this.content);this.contentSize=a[o],this.relativeOffset=a[i],s&&(this.relativeOffset-=n[i]),this.computeBoundary(),this.setDirection(0)},r.prototype.setContent=function(t){t!==this.content&&(this.content=t,this.resetState())},r.prototype.resetState=function(){this.currentPos=0,this.startPos=0,this.dist=0,this.setDirection(0),this.setMovingDirection(0),this.resetStartPos()},r.prototype.computeBoundary=function(){this.hooks.trigger(this.hooks.eventTypes.beforeComputeBoundary);var t={minScrollPos:0,maxScrollPos:this.wrapperSize-this.contentSize};t.maxScrollPos<0&&(t.maxScrollPos-=this.relativeOffset,this.options.specifiedIndexAsContent===0&&(t.minScrollPos=-this.relativeOffset)),this.hooks.trigger(this.hooks.eventTypes.computeBoundary,t),this.minScrollPos=t.minScrollPos,this.maxScrollPos=t.maxScrollPos,this.hasScroll=this.options.scrollable&&this.maxScrollPos<this.minScrollPos,!this.hasScroll&&this.minScrollPos<this.maxScrollPos&&(this.maxScrollPos=this.minScrollPos,this.contentSize=this.wrapperSize)},r.prototype.updatePosition=function(t){this.currentPos=t},r.prototype.getCurrentPos=function(){return this.currentPos},r.prototype.checkInBoundary=function(){var t=this.adjustPosition(this.currentPos),e=t===this.getCurrentPos();return{position:t,inBoundary:e}},r.prototype.adjustPosition=function(t){return!this.hasScroll&&!this.hooks.trigger(this.hooks.eventTypes.ignoreHasScroll)?t=this.minScrollPos:t>this.minScrollPos?t=this.minScrollPos:t<this.maxScrollPos&&(t=this.maxScrollPos),t},r.prototype.updateStartPos=function(){this.startPos=this.currentPos},r.prototype.updateAbsStartPos=function(){this.absStartPos=this.currentPos},r.prototype.resetStartPos=function(){this.updateStartPos(),this.updateAbsStartPos()},r.prototype.getAbsDist=function(t){return this.dist+=t,Math.abs(this.dist)},r.prototype.destroy=function(){this.hooks.destroy()},r}(),It,At,Ft,zt,ze=(It={},It.yes=function(r){return!0},It.no=function(r){return lt(r),!1},It),Zo=(At={},At.horizontal=(Ft={},Ft.yes="horizontal",Ft.no="vertical",Ft),At.vertical=(zt={},zt.yes="vertical",zt.no="horizontal",zt),At),Ko=function(){function r(t,e,o){this.directionLockThreshold=t,this.freeScroll=e,this.eventPassthrough=o,this.reset()}return r.prototype.reset=function(){this.directionLocked=""},r.prototype.checkMovingDirection=function(t,e,o){return this.computeDirectionLock(t,e),this.handleEventPassthrough(o)},r.prototype.adjustDelta=function(t,e){return this.directionLocked==="horizontal"?e=0:this.directionLocked==="vertical"&&(t=0),{deltaX:t,deltaY:e}},r.prototype.computeDirectionLock=function(t,e){this.directionLocked===""&&!this.freeScroll&&(t>e+this.directionLockThreshold?this.directionLocked="horizontal":e>=t+this.directionLockThreshold?this.directionLocked="vertical":this.directionLocked="none")},r.prototype.handleEventPassthrough=function(t){var e=Zo[this.directionLocked];if(e){if(this.eventPassthrough===e.yes)return ze.yes(t);if(this.eventPassthrough===e.no)return ze.no(t)}return!1},r}(),Go=function(r,t,e){return e===2?[t,-r]:e===3?[-r,-t]:e===4?[-t,r]:[r,t]},qo=function(){function r(t,e,o,i,s){this.hooks=new rt(["start","beforeMove","scrollStart","scroll","beforeEnd","end","scrollEnd","contentNotMoved","detectMovingDirection","coordinateTransformation"]),this.scrollBehaviorX=t,this.scrollBehaviorY=e,this.actionsHandler=o,this.animater=i,this.options=s,this.directionLockAction=new Ko(s.directionLockThreshold,s.freeScroll,s.eventPassthrough),this.enabled=!0,this.bindActionsHandler()}return r.prototype.bindActionsHandler=function(){var t=this;this.actionsHandler.hooks.on(this.actionsHandler.hooks.eventTypes.start,function(e){return t.enabled?t.handleStart(e):!0}),this.actionsHandler.hooks.on(this.actionsHandler.hooks.eventTypes.move,function(e){var o=e.deltaX,i=e.deltaY,s=e.e;if(!t.enabled)return!0;var n=Go(o,i,t.options.quadrant),a=n[0],c=n[1],l={deltaX:a,deltaY:c};return t.hooks.trigger(t.hooks.eventTypes.coordinateTransformation,l),t.handleMove(l.deltaX,l.deltaY,s)}),this.actionsHandler.hooks.on(this.actionsHandler.hooks.eventTypes.end,function(e){return t.enabled?t.handleEnd(e):!0}),this.actionsHandler.hooks.on(this.actionsHandler.hooks.eventTypes.click,function(e){t.enabled&&!e._constructed&&t.handleClick(e)})},r.prototype.handleStart=function(t){var e=U();this.fingerMoved=!1,this.contentMoved=!1,this.startTime=e,this.directionLockAction.reset(),this.scrollBehaviorX.start(),this.scrollBehaviorY.start(),this.animater.doStop(),this.scrollBehaviorX.resetStartPos(),this.scrollBehaviorY.resetStartPos(),this.hooks.trigger(this.hooks.eventTypes.start,t)},r.prototype.handleMove=function(t,e,o){if(!this.hooks.trigger(this.hooks.eventTypes.beforeMove,o)){var i=this.scrollBehaviorX.getAbsDist(t),s=this.scrollBehaviorY.getAbsDist(e),n=U();if(this.checkMomentum(i,s,n))return!0;if(this.directionLockAction.checkMovingDirection(i,s,o))return this.actionsHandler.setInitiated(),!0;var a=this.directionLockAction.adjustDelta(t,e),c=this.scrollBehaviorX.getCurrentPos(),l=this.scrollBehaviorX.move(a.deltaX),u=this.scrollBehaviorY.getCurrentPos(),p=this.scrollBehaviorY.move(a.deltaY);if(!this.hooks.trigger(this.hooks.eventTypes.detectMovingDirection)){this.fingerMoved||(this.fingerMoved=!0);var g=l!==c||p!==u;!this.contentMoved&&!g&&this.hooks.trigger(this.hooks.eventTypes.contentNotMoved),!this.contentMoved&&g&&(this.contentMoved=!0,this.hooks.trigger(this.hooks.eventTypes.scrollStart)),this.contentMoved&&g&&(this.animater.translate({x:l,y:p}),this.dispatchScroll(n))}}},r.prototype.dispatchScroll=function(t){t-this.startTime>this.options.momentumLimitTime&&(this.startTime=t,this.scrollBehaviorX.updateStartPos(),this.scrollBehaviorY.updateStartPos(),this.options.probeType===1&&this.hooks.trigger(this.hooks.eventTypes.scroll,this.getCurrentPos())),this.options.probeType>1&&this.hooks.trigger(this.hooks.eventTypes.scroll,this.getCurrentPos())},r.prototype.checkMomentum=function(t,e,o){return o-this.endTime>this.options.momentumLimitTime&&e<this.options.momentumLimitDistance&&t<this.options.momentumLimitDistance},r.prototype.handleEnd=function(t){if(!this.hooks.trigger(this.hooks.eventTypes.beforeEnd,t)){var e=this.getCurrentPos();if(this.scrollBehaviorX.updateDirection(),this.scrollBehaviorY.updateDirection(),this.hooks.trigger(this.hooks.eventTypes.end,t,e))return!0;e=this.ensureIntegerPos(e),this.animater.translate(e),this.endTime=U();var o=this.endTime-this.startTime;this.hooks.trigger(this.hooks.eventTypes.scrollEnd,e,o)}},r.prototype.ensureIntegerPos=function(t){this.ensuringInteger=!0;var e=t.x,o=t.y,i=this.scrollBehaviorX,s=i.minScrollPos,n=i.maxScrollPos,a=this.scrollBehaviorY,c=a.minScrollPos,l=a.maxScrollPos;return e=e>0?Math.ceil(e):Math.floor(e),o=o>0?Math.ceil(o):Math.floor(o),e=C(e,n,s),o=C(o,l,c),{x:e,y:o}},r.prototype.handleClick=function(t){bt(t.target,this.options.preventDefaultException)||(lt(t),t.stopPropagation())},r.prototype.getCurrentPos=function(){return{x:this.scrollBehaviorX.getCurrentPos(),y:this.scrollBehaviorY.getCurrentPos()}},r.prototype.refresh=function(){this.endTime=0},r.prototype.destroy=function(){this.hooks.destroy()},r}();function Qo(r){var t=["click","bindToWrapper","disableMouse","disableTouch","preventDefault","stopPropagation","tagException","preventDefaultException","autoEndDistance"].reduce(function(e,o){return e[o]=r[o],e},{});return t}function Le(r,t,e,o){var i=["momentum","momentumLimitTime","momentumLimitDistance","deceleration","swipeBounceTime","swipeTime","outOfBoundaryDampingFactor","specifiedIndexAsContent"].reduce(function(s,n){return s[n]=r[n],s},{});return i.scrollable=!!r[t],i.bounces=e,i.rect=o,i}function le(r,t,e){e.forEach(function(o){var i,s;typeof o=="string"?i=s=o:(i=o.source,s=o.target),r.on(i,function(){for(var n=[],a=0;a<arguments.length;a++)n[a]=arguments[a];return t.trigger.apply(t,Ht([s],n))})})}function _o(r,t){for(var e=Object.keys(r),o=0,i=e;o<i.length;o++){var s=i[o];if(r[s]!==t[s])return!1}return!0}var Ne=1,Jo=function(){function r(t,e,o){this.wrapper=t,this.content=e,this.resizeTimeout=0,this.hooks=new rt(["beforeStart","beforeMove","beforeScrollStart","scrollStart","scroll","beforeEnd","scrollEnd","resize","touchEnd","end","flick","scrollCancel","momentum","scrollTo","minDistanceScroll","scrollToElement","beforeRefresh"]),this.options=o;var i=this.options.bounce,s=i.left,n=i.right,a=i.top,c=i.bottom;this.scrollBehaviorX=new Fe(t,e,Le(o,"scrollX",[s,n],{size:"width",position:"left"})),this.scrollBehaviorY=new Fe(t,e,Le(o,"scrollY",[a,c],{size:"height",position:"top"})),this.translater=new No(this.content),this.animater=Vo(this.content,this.translater,this.options),this.actionsHandler=new Lo(this.options.bindToTarget?this.content:t,Qo(this.options)),this.actions=new qo(this.scrollBehaviorX,this.scrollBehaviorY,this.actionsHandler,this.animater,this.options);var l=this.resize.bind(this);this.resizeRegister=new N(window,[{name:"orientationchange",handler:l},{name:"resize",handler:l}]),this.registerTransitionEnd(),this.init()}return r.prototype.init=function(){var t=this;this.bindTranslater(),this.bindAnimater(),this.bindActions(),this.hooks.on(this.hooks.eventTypes.scrollEnd,function(){t.togglePointerEvents(!0)})},r.prototype.registerTransitionEnd=function(){this.transitionEndRegister=new N(this.content,[{name:M.transitionEnd,handler:this.transitionEnd.bind(this)}])},r.prototype.bindTranslater=function(){var t=this,e=this.translater.hooks;e.on(e.eventTypes.beforeTranslate,function(o){t.options.translateZ&&o.push(t.options.translateZ)}),e.on(e.eventTypes.translate,function(o){var i=t.getCurrentPos();if(t.updatePositions(o),t.actions.ensuringInteger===!0){t.actions.ensuringInteger=!1;return}(o.x!==i.x||o.y!==i.y)&&t.togglePointerEvents(!1)})},r.prototype.bindAnimater=function(){var t=this;this.animater.hooks.on(this.animater.hooks.eventTypes.end,function(e){t.resetPosition(t.options.bounceTime)||(t.animater.setPending(!1),t.hooks.trigger(t.hooks.eventTypes.scrollEnd,e))}),le(this.animater.hooks,this.hooks,[{source:this.animater.hooks.eventTypes.move,target:this.hooks.eventTypes.scroll},{source:this.animater.hooks.eventTypes.forceStop,target:this.hooks.eventTypes.scrollEnd}])},r.prototype.bindActions=function(){var t=this,e=this.actions;le(e.hooks,this.hooks,[{source:e.hooks.eventTypes.start,target:this.hooks.eventTypes.beforeStart},{source:e.hooks.eventTypes.start,target:this.hooks.eventTypes.beforeScrollStart},{source:e.hooks.eventTypes.beforeMove,target:this.hooks.eventTypes.beforeMove},{source:e.hooks.eventTypes.scrollStart,target:this.hooks.eventTypes.scrollStart},{source:e.hooks.eventTypes.scroll,target:this.hooks.eventTypes.scroll},{source:e.hooks.eventTypes.beforeEnd,target:this.hooks.eventTypes.beforeEnd}]),e.hooks.on(e.hooks.eventTypes.end,function(o,i){if(t.hooks.trigger(t.hooks.eventTypes.touchEnd,i),t.hooks.trigger(t.hooks.eventTypes.end,i)||!e.fingerMoved&&(t.hooks.trigger(t.hooks.eventTypes.scrollCancel),t.checkClick(o)))return!0;if(t.resetPosition(t.options.bounceTime,F.bounce))return t.animater.setForceStopped(!1),!0}),e.hooks.on(e.hooks.eventTypes.scrollEnd,function(o,i){var s=Math.abs(o.x-t.scrollBehaviorX.startPos),n=Math.abs(o.y-t.scrollBehaviorY.startPos);if(t.checkFlick(i,s,n)){t.animater.setForceStopped(!1),t.hooks.trigger(t.hooks.eventTypes.flick);return}if(t.momentum(o,i)){t.animater.setForceStopped(!1);return}e.contentMoved&&t.hooks.trigger(t.hooks.eventTypes.scrollEnd,o),t.animater.forceStopped&&t.animater.setForceStopped(!1)})},r.prototype.checkFlick=function(t,e,o){var i=1;if(this.hooks.events.flick.length>1&&t<this.options.flickLimitTime&&e<this.options.flickLimitDistance&&o<this.options.flickLimitDistance&&(o>i||e>i))return!0},r.prototype.momentum=function(t,e){var o={time:0,easing:F.swiper,newX:t.x,newY:t.y},i=this.scrollBehaviorX.end(e),s=this.scrollBehaviorY.end(e);if(o.newX=oe(i.destination)?o.newX:i.destination,o.newY=oe(s.destination)?o.newY:s.destination,o.time=Math.max(i.duration,s.duration),this.hooks.trigger(this.hooks.eventTypes.momentum,o,this),o.newX!==t.x||o.newY!==t.y)return(o.newX>this.scrollBehaviorX.minScrollPos||o.newX<this.scrollBehaviorX.maxScrollPos||o.newY>this.scrollBehaviorY.minScrollPos||o.newY<this.scrollBehaviorY.maxScrollPos)&&(o.easing=F.swipeBounce),this.scrollTo(o.newX,o.newY,o.time,o.easing),!0},r.prototype.checkClick=function(t){var e={preventClick:this.animater.forceStopped};if(this.hooks.trigger(this.hooks.eventTypes.checkClick))return this.animater.setForceStopped(!1),!0;if(!e.preventClick){var o=this.options.dblclick,i=!1;if(o&&this.lastClickTime){var s=o.delay,n=s===void 0?300:s;U()-this.lastClickTime<n&&(i=!0,Yo(t))}return this.options.tap&&Mo(t,this.options.tap),this.options.click&&!bt(t.target,this.options.preventDefaultException)&&He(t),this.lastClickTime=i?null:U(),!0}return!1},r.prototype.resize=function(){var t=this;this.actions.enabled&&(vo&&(this.wrapper.scrollTop=0),clearTimeout(this.resizeTimeout),this.resizeTimeout=window.setTimeout(function(){t.hooks.trigger(t.hooks.eventTypes.resize)},this.options.resizePolling))},r.proto