viewer.min.js
30.7 KB
/*!
* Viewer.js v1.3.5
* https://fengyuanchen.github.io/viewerjs
*
* Copyright 2015-present Chen Fengyuan
* Released under the MIT license
*
* Date: 2019-07-04T11:00:16.790Z
*/
!function(t,i){"object"==typeof exports&&"undefined"!=typeof module?module.exports=i():"function"==typeof define&&define.amd?define(i):(t=t||self).Viewer=i()}(this,function(){"use strict";function i(t){return(i="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t})(t)}function n(t,i){for(var e=0;e<i.length;e++){var n=i[e];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(t,n.key,n)}}var s={backdrop:!0,button:!0,navbar:!0,title:!0,toolbar:!0,className:"",container:"body",filter:null,fullscreen:!0,initialViewIndex:0,inline:!1,interval:5e3,keyboard:!0,loading:!0,loop:!0,minWidth:200,minHeight:100,movable:!0,zoomable:!0,rotatable:!0,scalable:!0,toggleOnDblclick:!0,tooltip:!0,transition:!0,zIndex:2015,zIndexInline:0,zoomRatio:.1,minZoomRatio:.01,maxZoomRatio:100,url:"src",ready:null,show:null,shown:null,hide:null,hidden:null,view:null,viewed:null,zoom:null,zoomed:null},o="undefined"!=typeof window,a=o?window:{},r=o&&"ontouchstart"in a.document.documentElement,t=o&&"PointerEvent"in a,p="viewer",h="move",l="switch",c="zoom",f="".concat(p,"-active"),w="".concat(p,"-close"),b="".concat(p,"-fade"),y="".concat(p,"-fixed"),x="".concat(p,"-fullscreen"),u="".concat(p,"-fullscreen-exit"),k="".concat(p,"-hide"),e="".concat(p,"-hide-md-down"),d="".concat(p,"-hide-sm-down"),m="".concat(p,"-hide-xs-down"),g="".concat(p,"-in"),z="".concat(p,"-invisible"),v="".concat(p,"-loading"),D="".concat(p,"-move"),T="".concat(p,"-open"),E="".concat(p,"-show"),I="".concat(p,"-transition"),S="click",C="dblclick",L="dragstart",N="hidden",R="hide",M="keydown",Y="load",q=t?"pointerdown":r?"touchstart":"mousedown",X=t?"pointermove":r?"touchmove":"mousemove",F=t?"pointerup pointercancel":r?"touchend touchcancel":"mouseup",O="ready",A="resize",W="show",P="shown",H="transitionend",j="view",V="viewed",B="wheel",K="".concat(p,"Action"),U=/\s\s*/,Z=["zoom-in","zoom-out","one-to-one","reset","prev","play","next","rotate-left","rotate-right","flip-horizontal","flip-vertical"];function 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t=i.firstElementChild;gt(t,"filled",!0),h.loading&<(i,v),wt(t,Y,function(t){h.loading&&ct(i,v),r.loadImage(t)},{once:!0})}),h.transition&&wt(t,V,function(){lt(l,I)},{once:!0})},renderList:function(t){var i=t||this.index,e=this.items[i].offsetWidth||30,n=e+1;at(this.list,st({width:n*this.length},yt({translateX:(this.viewerData.width-e)/2-n*i})))},resetList:function(){var t=this.list;t.innerHTML="",ct(t,I),at(t,yt({translateX:0}))},initImage:function(r){var t,h=this,l=this.options,i=this.image,e=this.viewerData,n=this.footer.offsetHeight,c=e.width,u=Math.max(e.height-n,n),d=this.imageData||{};this.imageInitializing={abort:function(){t.onload=null}},t=kt(i,function(t,i){var e=t/i,n=c,s=u;h.imageInitializing=!1,c<u*e?s=c/e:n=u*e;var o={naturalWidth:t,naturalHeight:i,aspectRatio:e,ratio:(n=Math.min(.9*n,t))/t,width:n,height:s=Math.min(.9*s,i),left:(c-n)/2,top:(u-s)/2},a=st({},o);l.rotatable&&(o.rotate=d.rotate||0,a.rotate=0),l.scalable&&(o.scaleX=d.scaleX||1,o.scaleY=d.scaleY||1,a.scaleX=1,a.scaleY=1),h.imageData=o,h.initialImageData=a,r&&r()})},renderImage:function(t){var i=this,e=this.image,n=this.imageData;if(at(e,st({width:n.width,height:n.height,marginLeft:n.left,marginTop:n.top},yt(n))),t)if((this.viewing||this.zooming)&&this.options.transition){var s=function(){i.imageRendering=!1,t()};this.imageRendering={abort:function(){pt(e,H,s)}},wt(e,H,s,{once:!0})}else t()},resetImage:function(){if(this.viewing||this.viewed){var t=this.image;this.viewing&&this.viewing.abort(),t.parentNode.removeChild(t),this.image=null}}},Et={bind:function(){var t=this.options,i=this.viewer,e=this.canvas,n=this.element.ownerDocument;wt(i,S,this.onClick=this.click.bind(this)),wt(i,B,this.onWheel=this.wheel.bind(this),{passive:!1,capture:!0}),wt(i,L,this.onDragStart=this.dragstart.bind(this)),wt(e,q,this.onPointerDown=this.pointerdown.bind(this)),wt(n,X,this.onPointerMove=this.pointermove.bind(this)),wt(n,F,this.onPointerUp=this.pointerup.bind(this)),wt(n,M,this.onKeyDown=this.keydown.bind(this)),wt(window,A,this.onResize=this.resize.bind(this)),t.toggleOnDblclick&&wt(e,C,this.onDblclick=this.dblclick.bind(this))},unbind:function(){var t=this.options,i=this.viewer,e=this.canvas,n=this.element.ownerDocument;pt(i,S,this.onClick),pt(i,B,this.onWheel,{passive:!1,capture:!0}),pt(i,L,this.onDragStart),pt(e,q,this.onPointerDown),pt(n,X,this.onPointerMove),pt(n,F,this.onPointerUp),pt(n,M,this.onKeyDown),pt(window,A,this.onResize),t.toggleOnDblclick&&pt(e,C,this.onDblclick)}},It={click:function(t){var i=t.target,e=this.options,n=this.imageData,s=ft(i,K);switch(r&&t.isTrusted&&i===this.canvas&&clearTimeout(this.clickCanvasTimeout),s){case"mix":this.played?this.stop():e.inline?this.fulled?this.exit():this.full():this.hide();break;case"hide":this.hide();break;case"view":this.view(ft(i,"index"));break;case"zoom-in":this.zoom(.1,!0);break;case"zoom-out":this.zoom(-.1,!0);break;case"one-to-one":this.toggle();break;case"reset":this.reset();break;case"prev":this.prev(e.loop);break;case"play":this.play(e.fullscreen);break;case"next":this.next(e.loop);break;case"rotate-left":this.rotate(-90);break;case"rotate-right":this.rotate(90);break;case"flip-horizontal":this.scaleX(-n.scaleX||-1);break;case"flip-vertical":this.scaleY(-n.scaleY||-1);break;default:this.played&&this.stop()}},dblclick:function(t){t.preventDefault(),this.viewed&&t.target===this.image&&(r&&t.isTrusted&&clearTimeout(this.doubleClickImageTimeout),this.toggle())},load:function(){var t=this;this.timeout&&(clearTimeout(this.timeout),this.timeout=!1);var i=this.element,e=this.options,n=this.image,s=this.index,o=this.viewerData;ct(n,z),e.loading&&ct(this.canvas,v),n.style.cssText="height:0;"+"margin-left:".concat(o.width/2,"px;")+"margin-top:".concat(o.height/2,"px;")+"max-width:none!important;position:absolute;width:0;",this.initImage(function(){ut(n,D,e.movable),ut(n,I,e.transition),t.renderImage(function(){t.viewed=!0,t.viewing=!1,et(e.viewed)&&wt(i,V,e.viewed,{once:!0}),bt(i,V,{originalImage:t.images[s],index:s,image:n})})})},loadImage:function(t){var o=t.target,i=o.parentNode,a=i.offsetWidth||30,r=i.offsetHeight||50,h=!!ft(o,"filled");kt(o,function(t,i){var e=t/i,n=a,s=r;a<r*e?h?n=r*e:s=a/e:h?s=a/e:n=r*e,at(o,st({width:n,height:s},yt({translateX:(a-n)/2,translateY:(r-s)/2})))})},keydown:function(t){var i=this.options;if(this.fulled&&i.keyboard)switch(t.keyCode||t.which||t.charCode){case 27:this.played?this.stop():i.inline?this.fulled&&this.exit():this.hide();break;case 32:this.played&&this.stop();break;case 37:this.prev(i.loop);break;case 38:t.preventDefault(),this.zoom(i.zoomRatio,!0);break;case 39:this.next(i.loop);break;case 40:t.preventDefault(),this.zoom(-i.zoomRatio,!0);break;case 48:case 49:t.ctrlKey&&(t.preventDefault(),this.toggle())}},dragstart:function(t){"img"===t.target.tagName.toLowerCase()&&t.preventDefault()},pointerdown:function(t){var i=this.options,e=this.pointers,n=t.buttons,s=t.button;if(!(!this.viewed||this.showing||this.viewing||this.hiding||G(n)&&1!==n||G(s)&&0!==s||t.ctrlKey)){t.preventDefault(),t.changedTouches?nt(t.changedTouches,function(t){e[t.identifier]=Dt(t)}):e[t.pointerId||0]=Dt(t);var o=!!i.movable&&h;1<Object.keys(e).length?o=c:"touch"!==t.pointerType&&"touchstart"!==t.type||!this.isSwitchable()||(o=l),!i.transition||o!==h&&o!==c||ct(this.image,I),this.action=o}},pointermove:function(t){var i=this.pointers,e=this.action;this.viewed&&e&&(t.preventDefault(),t.changedTouches?nt(t.changedTouches,function(t){st(i[t.identifier]||{},Dt(t,!0))}):st(i[t.pointerId||0]||{},Dt(t,!0)),this.change(t))},pointerup:function(t){var i,e=this,n=this.options,s=this.action,o=this.pointers;t.changedTouches?nt(t.changedTouches,function(t){i=o[t.identifier],delete o[t.identifier]}):(i=o[t.pointerId||0],delete o[t.pointerId||0]),s&&(t.preventDefault(),!n.transition||s!==h&&s!==c||lt(this.image,I),this.action=!1,r&&s!==c&&i&&Date.now()-i.timeStamp<500&&(clearTimeout(this.clickCanvasTimeout),clearTimeout(this.doubleClickImageTimeout),n.toggleOnDblclick&&this.viewed&&t.target===this.image?this.imageClicked?(this.imageClicked=!1,this.doubleClickImageTimeout=setTimeout(function(){bt(e.image,C)},50)):(this.imageClicked=!0,this.doubleClickImageTimeout=setTimeout(function(){e.imageClicked=!1},500)):(this.imageClicked=!1,n.backdrop&&"static"!==n.backdrop&&t.target===this.canvas&&(this.clickCanvasTimeout=setTimeout(function(){bt(e.canvas,S)},50)))))},resize:function(){var i=this;if(this.isShown&&!this.hiding&&(this.initContainer(),this.initViewer(),this.renderViewer(),this.renderList(),this.viewed&&this.initImage(function(){i.renderImage()}),this.played)){if(this.options.fullscreen&&this.fulled&&!(document.fullscreenElement||document.webkitFullscreenElement||document.mozFullScreenElement||document.msFullscreenElement))return void this.stop();nt(this.player.getElementsByTagName("img"),function(t){wt(t,Y,i.loadImage.bind(i),{once:!0}),bt(t,Y)})}},wheel:function(t){var i=this;if(this.viewed&&(t.preventDefault(),!this.wheeling)){this.wheeling=!0,setTimeout(function(){i.wheeling=!1},50);var e=Number(this.options.zoomRatio)||.1,n=1;t.deltaY?n=0<t.deltaY?1:-1:t.wheelDelta?n=-t.wheelDelta/120:t.detail&&(n=0<t.detail?1:-1),this.zoom(-n*e,!0,t)}}},St={show:function(t){var i=0<arguments.length&&void 0!==t&&t,e=this.element,n=this.options;if(n.inline||this.showing||this.isShown||this.showing)return this;if(!this.ready)return this.build(),this.ready&&this.show(i),this;if(et(n.show)&&wt(e,W,n.show,{once:!0}),!1===bt(e,W)||!this.ready)return this;this.hiding&&this.transitioning.abort(),this.showing=!0,this.open();var s=this.viewer;if(ct(s,k),n.transition&&!i){var o=this.shown.bind(this);this.transitioning={abort:function(){pt(s,H,o),ct(s,g)}},lt(s,I),s.offsetWidth,wt(s,H,o,{once:!0}),lt(s,g)}else lt(s,g),this.shown();return this},hide:function(){var t=0<arguments.length&&void 0!==arguments[0]&&arguments[0],i=this.element,e=this.options;if(e.inline||this.hiding||!this.isShown&&!this.showing)return this;if(et(e.hide)&&wt(i,R,e.hide,{once:!0}),!1===bt(i,R))return this;this.showing&&this.transitioning.abort(),this.hiding=!0,this.played?this.stop():this.viewing&&this.viewing.abort();var n=this.viewer;if(e.transition&&!t){var s=this.hidden.bind(this),o=function(){setTimeout(function(){wt(n,H,s,{once:!0}),ct(n,g)},0)};this.transitioning={abort:function(){this.viewed?pt(this.image,H,o):pt(n,H,s)}},this.viewed&&ht(this.image,I)?(wt(this.image,H,o,{once:!0}),this.zoomTo(0,!1,!1,!0)):o()}else ct(n,g),this.hidden();return this},view:function(t){var e=this,i=0<arguments.length&&void 0!==t?t:this.options.initialViewIndex;if(i=Number(i)||0,!this.isShown)return this.index=i,this.show();if(this.hiding||this.played||i<0||i>=this.length||this.viewed&&i===this.index)return this;this.viewing&&this.viewing.abort();var n=this.element,s=this.options,o=this.title,a=this.canvas,r=this.items[i],h=r.querySelector("img"),l=ft(h,"originalUrl"),c=rt(h.getAttribute("alt")),u=document.createElement("img");if(u.src=l,u.alt=c,et(s.view)&&wt(n,j,s.view,{once:!0}),!1===bt(n,j,{originalImage:this.images[i],index:i,image:u})||!this.isShown||this.hiding||this.played)return 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0!==t&&t,e=this.length-1,n=this.index+1;return e<n&&(n=i?0:e),this.view(n),this},move:function(t,i){var e=this.imageData;return this.moveTo(J(t)?t:e.left+Number(t),J(i)?i:e.top+Number(i)),this},moveTo:function(t,i){var e=1<arguments.length&&void 0!==i?i:t,n=this.imageData;if(t=Number(t),e=Number(e),this.viewed&&!this.played&&this.options.movable){var s=!1;G(t)&&(n.left=t,s=!0),G(e)&&(n.top=e,s=!0),s&&this.renderImage()}return this},zoom:function(t,i,e){var n=1<arguments.length&&void 0!==i&&i,s=2<arguments.length&&void 0!==e?e:null,o=this.imageData;return t=(t=Number(t))<0?1/(1-t):1+t,this.zoomTo(o.width*t/o.naturalWidth,n,s),this},zoomTo:function(t,i,e,n){var s=this,o=1<arguments.length&&void 0!==i&&i,a=2<arguments.length&&void 0!==e?e:null,r=3<arguments.length&&void 0!==n&&n,h=this.element,l=this.options,c=this.pointers,u=this.imageData,d=u.width,m=u.height,f=u.left,g=u.top,v=u.naturalWidth,p=u.naturalHeight;if(G(t=Math.max(0,t))&&this.viewed&&!this.played&&(r||l.zoomable)){if(!r){var 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c=document.createElement("ul"),u=it(h.toolbar),d=Z.slice(0,3),m=Z.slice(7,9),f=Z.slice(9);u||lt(o,zt(h.toolbar)),nt(u?h.toolbar:Z,function(t,i){var e=u&&it(t),n=u?mt(i):t,s=e&&!J(t.show)?t.show:t;if(s&&(h.zoomable||-1===d.indexOf(n))&&(h.rotatable||-1===m.indexOf(n))&&(h.scalable||-1===f.indexOf(n))){var o=e&&!J(t.size)?t.size:t,a=e&&!J(t.click)?t.click:t,r=document.createElement("li");r.setAttribute("role","button"),lt(r,"".concat(p,"-").concat(n)),et(a)||gt(r,K,n),G(s)&<(r,zt(s)),-1!==["small","large"].indexOf(o)?lt(r,"".concat(p,"-").concat(o)):"play"===n&<(r,"".concat(p,"-large")),et(a)&&wt(r,S,a),c.appendChild(r)}}),o.appendChild(c)}else lt(o,k);if(!h.rotatable){var g=o.querySelectorAll('li[class*="rotate"]');lt(g,z),nt(g,function(t){o.appendChild(t)})}if(h.inline)lt(r,x),at(n,{zIndex:h.zIndexInline}),"static"===window.getComputedStyle(i).position&&at(i,{position:"relative"}),i.insertBefore(n,t.nextSibling);else{lt(r,w),lt(n,y),lt(n,b),lt(n,k),at(n,{zIndex:h.zIndex});var 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