(function () {
'use strict';

/*
 * medium-zoom v0.2.0
 * Medium zoom on your images in vanilla JavaScript
 * Copyright 2017 Francois Chalifour
 * https://github.com/francoischalifour/medium-zoom
 * MIT License
 */function __$styleInject(a,b){if('undefined'==typeof document){ return b; }a=a||'';var c=document.head||document.getElementsByTagName('head')[0],d=document.createElement('style');return d.type='text/css',c.appendChild(d),d.styleSheet?d.styleSheet.cssText=a:d.appendChild(document.createTextNode(a)),b}function createCommonjsModule(a,b){return b={exports:{}},a(b,b.exports),b.exports}var _extends=Object.assign||function(a){for(var b,c=1;c<arguments.length;c++){ for(var d in b=arguments[c],b){ Object.prototype.hasOwnProperty.call(b,d)&&(a[d]=b[d]); } }return a}; var toConsumableArray=function(a){if(Array.isArray(a)){for(var b=0,c=Array(a.length);b<a.length;b++){ c[b]=a[b]; }return c}return Array.from(a)}; var mediumZoom_1=createCommonjsModule(function(a){var b=['IMG'],c=[27,81],d=function(a){return b.includes(a.tagName)},e=function(a){return a.naturalWidth!==a.width},f=function(a){return NodeList.prototype.isPrototypeOf(a)||HTMLCollection.prototype.isPrototypeOf(a)},g=function(a){return a&&1===a.nodeType};a.exports=function(a){var h=1<arguments.length&&void 0!==arguments[1]?arguments[1]:{},i=h.margin,j=void 0===i?0:i,k=h.background,l=void 0===k?'#fff':k,m=h.scrollOffset,n=void 0===m?48:m,o=h.metaClick,p=function(a){var b=a.getBoundingClientRect(),c=b.top,d=b.left,e=b.width,f=b.height,g=a.cloneNode(),h=window.pageYOffset||document.documentElement.scrollTop||document.body.scrollTop||0,i=window.pageXOffset||document.documentElement.scrollLeft||document.body.scrollLeft||0;return g.removeAttribute('id'),g.style.position='absolute',g.style.top=c+h+'px',g.style.left=d+i+'px',g.style.width=e+'px',g.style.height=f+'px',g.style.transform='',g},q=function(){if(C.template){ if(C.template.dispatchEvent(new Event('show')),D=window.pageYOffset||document.documentElement.scrollTop||document.body.scrollTop||0,E=!0,C.zoomed=p(C.template),document.body.appendChild(B),document.body.appendChild(C.zoomed),requestAnimationFrame(function(){document.body.classList.add('medium-zoom--open');}),C.template.style.visibility='hidden',C.zoomed.classList.add('medium-zoom-image--open'),C.zoomed.addEventListener('click',r),C.zoomed.addEventListener('transitionend',u),C.template.getAttribute('data-zoom-target')){C.zoomedHd=C.zoomed.cloneNode(),C.zoomedHd.src=C.zoomed.getAttribute('data-zoom-target'),C.zoomedHd.onerror=function(){clearInterval(a),console.error('Unable to reach the zoom image target '+C.zoomedHd.src),C.zoomedHd=null,y();};var a=setInterval(function(){C.zoomedHd.naturalWidth&&(clearInterval(a),C.zoomedHd.classList.add('medium-zoom-image--open'),C.zoomedHd.addEventListener('click',r),document.body.appendChild(C.zoomedHd),y());},10);}else { y(); } }},r=function a(){var b=0<arguments.length&&void 0!==arguments[0]?arguments[0]:0,c=function(){E||!C.template||(C.template.dispatchEvent(new Event('hide')),E=!0,document.body.classList.remove('medium-zoom--open'),C.zoomed.style.transform='',C.zoomedHd&&(C.zoomedHd.style.transform='',C.zoomedHd.removeEventListener('click',a)),C.zoomed.removeEventListener('click',a),C.zoomed.addEventListener('transitionend',v));};0<b?setTimeout(c,b):c();},s=function(a){C.template?r():(C.template=a?a.target:A[0],q());},t=function(a){return(a.metaKey||a.ctrlKey)&&z.metaClick?window.open(a.target.getAttribute('data-original')||a.target.parentNode.href||a.target.src,'_blank'):void(a.preventDefault(),s(a))},u=function a(){E=!1,C.zoomed.removeEventListener('transitionend',a),C.template.dispatchEvent(new Event('shown'));},v=function a(){C.template&&(C.template.style.visibility='',document.body.removeChild(C.zoomed),C.zoomedHd&&document.body.removeChild(C.zoomedHd),document.body.removeChild(B),C.zoomed.classList.remove('medium-zoom-image--open'),E=!1,C.zoomed.removeEventListener('transitionend',a),C.template.dispatchEvent(new Event('hidden')),C.template=null,C.zoomed=null,C.zoomedHd=null);},w=function(){if(!E&&C.template){var a=window.pageYOffset||document.documentElement.scrollTop||document.body.scrollTop||0;Math.abs(D-a)>z.scrollOffset&&r(150);}},x=function(a){c.includes(a.keyCode||a.which)&&r();},y=function(){var a=Math.min;if(C.template){var b=window.innerWidth,c=window.innerHeight,d=b-2*z.margin,e=c-2*z.margin,f=C.zoomedHd||C.template,g=f.naturalWidth,h=void 0===g?d:g,i=f.naturalHeight,j=void 0===i?e:i,k=f.getBoundingClientRect(),l=k.top,m=k.left,n=k.width,o=k.height,p=a(h,d)/n,q=a(j,e)/o,r=a(p,q)||1,s=(-m+(d-n)/2+z.margin)/r,t=(-l+(e-o)/2+z.margin)/r,u='scale('+r+') translate3d('+s+'px, '+t+'px, 0)';C.zoomed.style.transform=u,C.zoomedHd&&(C.zoomedHd.style.transform=u);}},z={margin:j,background:l,scrollOffset:n,metaClick:void 0===o||o};a instanceof Object&&_extends(z,a);var A=function(a){try{return Array.isArray(a)?a.filter(d):f(a)?[].concat(toConsumableArray(a)).filter(d):g(a)?[a].filter(d):'string'==typeof a?[].concat(toConsumableArray(document.querySelectorAll(a))).filter(d):[].concat(toConsumableArray(document.querySelectorAll(b.map(function(a){return a.toLowerCase()}).join(',')))).filter(e)}catch(a){throw new TypeError('The provided selector is invalid.\nExpects a CSS selector, a Node element, a NodeList, an HTMLCollection or an array.\nSee: https://github.com/francoischalifour/medium-zoom')}}(a),B=function(a){var b=document.createElement('div');return b.classList.add('medium-zoom-overlay'),b.style.backgroundColor=a,b}(z.background),C={template:null,zoomed:null,zoomedHd:null},D=0,E=!1;return A.forEach(function(a){a.classList.add('medium-zoom-image'),a.addEventListener('click',t);}),B.addEventListener('click',r),document.addEventListener('scroll',w),document.addEventListener('keyup',x),window.addEventListener('resize',r),{show:s,hide:r,toggle:s,update:function(){var a=0<arguments.length&&void 0!==arguments[0]?arguments[0]:{};return a.background&&(B.style.backgroundColor=a.background),_extends(z,a)},addEventListeners:function(a,b){A.forEach(function(c){c.addEventListener(a,b);});},detach:function(){var a=function a(){var b=new Event('detach');A.forEach(function(a){a.classList.remove('medium-zoom-image'),a.removeEventListener('click',t),a.dispatchEvent(b);}),A.splice(0,A.length),B.removeEventListener('click',r),document.removeEventListener('scroll',w),document.removeEventListener('keyup',x),window.removeEventListener('resize',r),C.zoomed&&C.zoomed.removeEventListener('transitionend',a);};C.zoomed?(r(),C.zoomed.addEventListener('transitionend',requestAnimationFrame(a))):a();},images:A,options:z}};});__$styleInject('.medium-zoom-overlay{position:fixed;top:0;right:0;bottom:0;left:0;opacity:0;transition:opacity .3s;will-change:opacity}.medium-zoom--open .medium-zoom-overlay{cursor:pointer;cursor:zoom-out;opacity:1}.medium-zoom-image{cursor:pointer;cursor:zoom-in;transition:transform .3s}.medium-zoom-image--open{position:relative;z-index:1;cursor:pointer;cursor:zoom-out;will-change:transform}',void 0);var src=mediumZoom_1;

function install (hook) {
  var zoom;

  hook.doneEach(function (_) {
    if (zoom) {
      zoom.detach();
    }

    zoom = src('img:not(.emoji):not([data-no-zoom])');
  });
}

$docsify.plugins = [].concat(install, $docsify.plugins);

}());