6 lines
16 KiB
JavaScript
6 lines
16 KiB
JavaScript
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/*!
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* reveal.js Zoom plugin
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*/
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var Ho={id:"zoom",init:function(t){t.getRevealElement().addEventListener("mousedown",(function(e){var n=/Linux/.test(window.navigator.platform)?"ctrl":"alt",r=(t.getConfig().zoomKey?t.getConfig().zoomKey:n)+"Key",o=t.getConfig().zoomLevel?t.getConfig().zoomLevel:2;e[r]&&!t.isOverview()&&(e.preventDefault(),Go.to({x:e.clientX,y:e.clientY,scale:o,pan:!1}))}))}},Uo=function(){return Ho},Go=function(){var t=1,e=0,n=0,r=-1,o=-1,i="WebkitTransform"in document.body.style||"MozTransform"in document.body.style||"msTransform"in document.body.style||"OTransform"in document.body.style||"transform"in document.body.style;function u(e,n){var r=a();if(e.width=e.width||1,e.height=e.height||1,e.x-=(window.innerWidth-e.width*n)/2,e.y-=(window.innerHeight-e.height*n)/2,i)if(1===n)document.body.style.transform="",document.body.style.OTransform="",document.body.style.msTransform="",document.body.style.MozTransform="",document.body.style.WebkitTransform="";else{var o=r.x+"px "+r.y+"px",u="translate("+-e.x+"px,"+-e.y+"px) scale("+n+")";document.body.style.transformOrigin=o,document.body.style.OTransformOrigin=o,document.body.style.msTransformOrigin=o,document.body.style.MozTransformOrigin=o,document.body.style.WebkitTransformOrigin=o,document.body.style.transform=u,document.body.style.OTransform=u,document.body.style.msTransform=u,document.body.style.MozTransform=u,document.body.style.WebkitTransform=u}else 1===n?(document.body.style.position="",document.body.style.left="",document.body.style.top="",document.body.style.width="",document.body.style.height="",document.body.style.zoom=""):(document.body.style.position="relative",document.body.style.left=-(r.x+e.x)/n+"px",document.body.style.top=-(r.y+e.y)/n+"px",document.body.style.width=100*n+"%",document.body.style.height=100*n+"%",document.body.style.zoom=n);t=n,document.documentElement.classList&&(1!==t?document.documentElement.classList.add("zoomed"):document.documentElement.classList.remove("zoomed"))}function c(){var r=.12*window.innerWidth,o=.12*window.innerHeight,i=a();n<o?window.scroll(i.x,i.y-14/t*(1-n/o)):n>window.innerHeight-o&&window.scroll(i.x,i.y+(1-(window.innerHeight-n)/o)*(14/t)),e<r?window.scroll(i.x-14/t*(1-e/r),i.y):e>window.innerWidth-r&&window.scroll(i.x+(1-(window.innerWidth-e)/r)*(14/t),i.y)}function a(){return{x:void 0!==window.scrollX?window.scrollX:window.pageXOffset,y:void 0!==window.scrollY?window.scrollY:window.pageYOffset}}return i&&(document.body.style.transition="transform 0.8s ease",document.body.style.OTransition="-o-transform 0.8s ease",document.body.style.msTransition="-ms-transform 0.8s ease",document.body.style.MozTransition="-moz-transform 0.8s ease",document.body.style.WebkitTransition="-webkit-transform 0.8s ease"),document.addEventListener("keyup",(function(e){1!==t&&27===e.keyCode&&Go.out()})),document.addEventListener("mousemove",(function(r){1!==t&&(e=r.clientX,n=r.clientY)})),{to:function(e){if(1!==t)Go.out();else{if(e.x=e.x||0,e.y=e.y||0,e.element){var n=e.element.getBoundingClientRect();e.x=n.left-20,e.y=n.top-20,e.width=n.width+40,e.height=n.height+40}void 0!==e.width&&void 0!==e.height&&(e.scale=Math.max(Math.min(window.innerWidth/e.width,window.innerHeight/e.height),1)),e.scale>1&&(e.x*=e.scale,e.y*=e.scale,u(e,e.scale),!1!==e.pan&&(r=setTimeout((function(){o=setInterval(c,1e3/60)}),800)))}},out:function(){clearTimeout(r),clearInterval(o),u({x:0,y:0},1),t=1},magnify:function(t){this.to(t)},reset:function(){this.out()},zoomLevel:function(){return t}}}();export{Uo as default};
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