docsify/lib/plugins/zoom-image.min.js

this.D=this.D||{},function(){"use strict";function t(t,e){return e={exports:{}},t(e,e.exports),e.exports}function e(t){var e,n=Docsify.dom;n.appendTo(n.head,n.create("style",i)),t.doneEach(function(t){var i=n.findAll("img:not(.emoji)");Array.isArray(e)&&e.length&&(e.forEach(function(t){return t()}),e=[]),e=i.map(o)})}var n="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{},o=t(function(t,e){!function(e,n){t.exports=n()}(n,function(){function t(){g===-1&&(g=window.pageYOffset);var t=Math.abs(g-window.pageYOffset);t>=40&&a()}function e(t){27===t.keyCode&&a()}function n(t){var e=t.touches[0];null!==e&&(y=e.pageY,t.target.addEventListener("touchmove",o))}function o(t){var e=t.touches[0];null!==e&&Math.abs(e.pageY-y)>10&&(a(),t.target.removeEventListener("touchmove",o))}function i(){a()}function r(){document.addEventListener("scroll",t),document.addEventListener("keyup",e),document.addEventListener("touchstart",n),document.addEventListener("click",i,!0)}function s(){document.removeEventListener("scroll",t),document.removeEventListener("keyup",e),document.removeEventListener("touchstart",n),document.removeEventListener("click",i,!0)}function a(t){null!==h&&(t?h.dispose():h.close(),s(),h=null)}function c(t){if(!document.body.classList.contains("zoom-overlay-open"))return t.metaKey||t.ctrlKey?void window.open(t.target.getAttribute("data-original")||t.target.src,"_blank"):void(t.target.width>=m()-v||(a(!0),h=new p(t.target,v),h.zoom(),r()))}var m=function(){return document.documentElement.clientWidth},u=function(){return document.documentElement.clientHeight},d=function(t){var e=t.getBoundingClientRect(),n=document.documentElement,o=window;return{top:e.top+o.pageYOffset-n.clientTop,left:e.left+o.pageXOffset-n.clientLeft}},l=function(t,e,n){var o=function(t){t.target.removeEventListener(e,o),n()};t.addEventListener(e,o)},f=function(t,e){this.w=t,this.h=e},p=function(t,e){this.img=t,this.preservedTransform=t.style.transform,this.wrap=null,this.overlay=null,this.offset=e};p.prototype.forceRepaint=function(){this.img.offsetWidth},p.prototype.zoom=function(){var t=new f(this.img.naturalWidth,this.img.naturalHeight);this.wrap=document.createElement("div"),this.wrap.classList.add("zoom-img-wrap"),this.img.parentNode.insertBefore(this.wrap,this.img),this.wrap.appendChild(this.img),this.img.classList.add("zoom-img"),this.img.setAttribute("data-action","zoom-out"),this.overlay=document.createElement("div"),this.overlay.classList.add("zoom-overlay"),document.body.appendChild(this.overlay),this.forceRepaint();var e=this.calculateScale(t);this.forceRepaint(),this.animate(e),document.body.classList.add("zoom-overlay-open")},p.prototype.calculateScale=function(t){var e=t.w/this.img.width,n=m()-this.offset,o=u()-this.offset,i=t.w/t.h,r=n/o;return t.w<n&&t.h<o?e:i<r?o/t.h*e:n/t.w*e},p.prototype.animate=function(t){var e=d(this.img),n=window.pageYOffset,o=m()/2,i=n+u()/2,r=e.left+this.img.width/2,s=e.top+this.img.height/2,a=o-r,c=i-s,l=0,f="scale("+t+")",p="translate3d("+a+"px, "+c+"px, "+l+"px)";this.img.style.transform=f,this.wrap.style.transform=p},p.prototype.dispose=function(){null!==this.wrap&&null!==this.wrap.parentNode&&(this.img.classList.remove("zoom-img"),this.img.setAttribute("data-action","zoom"),this.wrap.parentNode.insertBefore(this.img,this.wrap),this.wrap.parentNode.removeChild(this.wrap),document.body.removeChild(this.overlay),document.body.classList.remove("zoom-overlay-transitioning"))},p.prototype.close=function(){var t=this;document.body.classList.add("zoom-overlay-transitioning"),this.img.style.transform=this.preservedTransform,0===this.img.style.length&&this.img.removeAttribute("style"),this.wrap.style.transform="none",l(this.img,"transitionend",function(){t.dispose(),document.body.classList.remove("zoom-overlay-open")})};var h=null,v=80,g=-1,y=-1,w=function(t){return t.setAttribute("data-action","zoom"),t.addEventListener("click",c),function(){return t.removeEventListener("click",c)}};return w})}),i='img[data-action="zoom"] {\n  cursor: pointer;\n  cursor: -webkit-zoom-in;\n  cursor: zoom-in;\n}\n.zoom-img,\n.zoom-img-wrap {\n  position: relative;\n  z-index: 666;\n  transition: -webkit-transform 300ms cubic-bezier(.2,0,.2,1);\n  transition: transform 300ms cubic-bezier(.2,0,.2,1);\n  transition: transform 300ms cubic-bezier(.2,0,.2,1), -webkit-transform 300ms cubic-bezier(.2,0,.2,1);\n}\n.zoom-overlay {\n  z-index: 420;\n  background: #fff;\n  position: fixed;\n  top: 0;\n  left: 0;\n  right: 0;\n  bottom: 0;\n  pointer-events: none;\n  opacity: 0;\n  transition: opacity 300ms;\n}\n.zoom-overlay-open .zoom-overlay {\n  opacity: 1;\n}\n.zoom-overlay-open {\n  cursor: pointer;\n  cursor: -webkit-zoom-out;\n  cursor: zoom-out;\n}\n.zoom-overlay-transitioning {\n  cursor: default;\n}\n.zoom-overlay-open.zoom-overlay-transitioning .zoom-overlay{\n  opacity: 0;\n}\n';$docsify.plugins=[].concat(e,$docsify.plugins)}();