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file-online-preview/server/src/main/resources/web/epub.ftl

159 lines
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Java
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<!DOCTYPE html>
<html lang="en">
<head>
<title>${file.name}文件预览</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, user-scalable=yes, initial-scale=1.0">
<#include "*/commonHeader.ftl">
<script src="js/base64.min.js" type="text/javascript"></script>
<script src="js/jszip.min.js"></script>
<script src="epub/epub.js"></script>
<link rel="stylesheet" type="text/css" href="epub/examples.css">
</head>
<#if currentUrl?contains("http://") || currentUrl?contains("https://") || currentUrl?contains("file://")>
<#assign finalUrl="${currentUrl}">
<#elseif currentUrl?contains("ftp://") >
<#assign finalUrl="${currentUrl}">
<#else>
<#assign finalUrl="${baseUrl}${currentUrl}">
</#if>
<body>
<select id="toc"></select>
<div id="viewer" class="scrolled"></div>
<div id="prev" class="arrow"></div>
<div id="next" class="arrow"></div>
</body>
<script type="text/javascript">
var url = '${finalUrl}';
var baseUrl = '${baseUrl}'.endsWith('/') ? '${baseUrl}' : '${baseUrl}' + '/';
if (!url.startsWith(baseUrl)) {
url = baseUrl + 'getCorsFile?urlPath=' + encodeURIComponent(Base64.encode(url));
}
function blobToArrayBuffer(blob) {
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onerror = reject;
reader.onload = () => {
resolve(reader.result);
};
reader.readAsArrayBuffer(blob);
});
}
let xhr = new XMLHttpRequest();
xhr.open('GET',url); //文件所在地址
xhr.responseType = 'blob';
xhr.onload = () => {
var currentSectionIndex = 100;
var book = ePub();
let content = xhr.response;
let blob = new Blob([content]);
var bookData = blobToArrayBuffer(blob);
book.open(bookData, "binary");
var rendition = book.renderTo("viewer", {
flow: "scrolled-doc",
width: "100%",
allowScriptedContent: true
// height: 600
});
var displayed = rendition.display();
var params = URLSearchParams && new URLSearchParams(document.location.search.substring(1));
var currentSectionIndex = (params && params.get("loc")) ? params.get("loc") : undefined;
rendition.display(currentSectionIndex);
var next = document.getElementById("next");
next.addEventListener("click", function(e){
rendition.next();
e.preventDefault();
}, false);
var prev = document.getElementById("prev");
prev.addEventListener("click", function(e){
rendition.prev();
e.preventDefault();
}, false);
rendition.on("rendered", function(section){
var nextSection = section.next();
var prevSection = section.prev();
if(nextSection) {
nextNav = book.navigation.get(nextSection.href);
if(nextNav) {
nextLabel = nextNav.label;
} else {
nextLabel = "next";
}
next.textContent = " »";
} else {
next.textContent = "";
}
if(prevSection) {
prevNav = book.navigation.get(prevSection.href);
if(prevNav) {
prevLabel = prevNav.label;
} else {
prevLabel = "previous";
}
prev.textContent = "« " ;
} else {
prev.textContent = "";
}
});
rendition.on("rendered", function(section){
var current = book.navigation && book.navigation.get(section.href);
if (current) {
var $select = document.getElementById("toc");
var $selected = $select.querySelector("option[selected]");
if ($selected) {
$selected.removeAttribute("selected");
}
var $options = $select.querySelectorAll("option");
for (var i = 0; i < $options.length; ++i) {
let selected = $options[i].getAttribute("ref") === current.href;
if (selected) {
$options[i].setAttribute("selected", "");
}
}
}
});
book.loaded.navigation.then(function(toc){
var $select = document.getElementById("toc"),
docfrag = document.createDocumentFragment();
toc.forEach(function(chapter) {
var option = document.createElement("option");
option.textContent = chapter.label;
option.setAttribute("ref", chapter.href);
docfrag.appendChild(option);
});
$select.appendChild(docfrag);
$select.onchange = function(){
var index = $select.selectedIndex,
url = $select.options[index].getAttribute("ref");
rendition.display(url);
return false;
};
});
}
xhr.send();
/*初始化水印*/
if (!!window.ActiveXObject || "ActiveXObject" in window)
{
}else{
initWaterMark();
}
</script>
</html>