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Ajurna
2021-05-04 09:31:44 +01:00
parent 776abe5374
commit 0c12fe3b92
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static/js/read_comic_pdf.min.min.js vendored Normal file
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const nav=JSON.parse(document.getElementById("nav").textContent);const last_read_page=JSON.parse(document.getElementById("last_read_page").textContent);var url="/comic/read/"+nav.cur_path+"/pdf";var pdfjsLib=window["pdfjs-dist/build/pdf"];pdfjsLib.GlobalWorkerOptions.workerSrc="/static/pdfjs/build/pdf.worker.js";var pdfDoc=null,pageNum=last_read_page,pageRendering=false,pageNumPending=null,scale=.8,canvas=document.getElementById("the-canvas"),ctx=canvas.getContext("2d");function renderPage(num){pageRendering=true;pdfDoc.getPage(num).then(function(page){let viewport=page.getViewport({scale:window.innerWidth*.95/page.getViewport({scale:1}).width});canvas.height=viewport.height;canvas.width=viewport.width;let renderContext={canvasContext:ctx,viewport:viewport};let renderTask=page.render(renderContext);renderTask.promise.then(function(){pageRendering=false;if(pageNumPending!==null){renderPage(pageNumPending);pageNumPending=null}}).then(function(){document.getElementById("the-canvas").scrollIntoView({behavior:"smooth"});$.ajax({url:"/comic/set_page/"+nav.cur_path+"/"+(num-1)+"/"})})});document.getElementById("page_num").textContent=num}function queueRenderPage(num){if(pageRendering){pageNumPending=num}else{renderPage(num)}}function onPrevPage(){if(pageNum<=1){window.location="/comic/read/"+nav.prev_path+"/"}pageNum--;queueRenderPage(pageNum)}document.getElementById("prev").addEventListener("click",onPrevPage);function onNextPage(){if(pageNum>=pdfDoc.numPages){window.location="/comic/read/"+nav.next_path+"/"}pageNum++;queueRenderPage(pageNum)}document.getElementById("next").addEventListener("click",onNextPage);pdfjsLib.getDocument(url).promise.then(function(pdfDoc_){pdfDoc=pdfDoc_;document.getElementById("page_count").textContent=pdfDoc.numPages;renderPage(pageNum)});$(document).keydown(function(e){switch(e.which){case 37:onPrevPage();break;case 38:window.scrollTo({top:window.scrollY-window.innerHeight*.7,left:0,behavior:"smooth"});break;case 39:onNextPage();break;case 40:window.scrollTo({top:window.scrollY+window.innerHeight*.7,left:0,behavior:"smooth"});break;default:return}e.preventDefault()});var hammertime=new Hammer(document.getElementById("the-canvas"),{});hammertime.on("swipeleft",function(){onNextPage()});hammertime.on("swiperight",function(){onPrevPage()});hammertime.on("tap",function(){onNextPage()});