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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport"
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content="width=device-width,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,user-scalable=no">
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<title>EPUB</title>
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<script src="https://cdn.bootcdn.net/ajax/libs/jszip/3.1.5/jszip.min.js"></script>
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<script src="https://fastly.jsdelivr.net/npm/epubjs@0.3.88/dist/epub.min.js"></script>
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<script>
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document.addEventListener('DOMContentLoaded', () => {
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const html = document.querySelector('html')
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let fontSize = window.innerWidth / 10
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fontSize = fontSize > 50 ? 50 : fontSize
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html.style.fontSize = fontSize + 'px'
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})
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</script>
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<style>
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* {
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padding: 0;
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margin: 0;
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}
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.mask {
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position: absolute;
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display: flex;
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left: 0;
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width: 100%;
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height: 100%;
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flex-direction: column;
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}
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.meun {
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display: flex;
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height: 1rem;
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align-items: center;
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}
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#toc {
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flex: 1;
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z-index: 100;
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font-size: .3rem;
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padding-left: .4rem;
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color: #333;
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}
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#page {
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z-index: 100;
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font-size: .3rem;
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color: #333;
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padding-right: 0.4rem;
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text-align: right;
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flex: 0 0 .5rem;
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}
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#load {
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z-index: 100;
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font-size: .3rem;
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color: #333;
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padding-right: 0.4rem;
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text-align: right;
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flex: 0 0 .5rem;
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}
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#toc-content {
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position: absolute;
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display: flex;
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top: 0;
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right: 0;
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z-index: 102;
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min-width: auto;
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max-width: 80%;
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height: 100%;
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background: white;
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flex-direction: column
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}
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#toc-mask {
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position: absolute;
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top: 0;
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left: 0;
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z-index: 101;
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width: 100%;
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height: 100%;
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background: rgba(51, 51, 51, .8);
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}
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.intro {
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width: 100%;
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height: 2.4rem;
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padding: .2rem .4rem;
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box-sizing: border-box;
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height: 3rem;
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display: flex;
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border-bottom: .1rem solid #f4f4f4;
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}
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.txt {
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display: flex;
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flex: 1;
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align-items: center;
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padding: 0 .2rem;
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font-size: .3rem;
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}
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#content {
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overflow-y: auto;
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}
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.item {
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padding: .2rem .4rem;
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border-bottom: .07rem solid #f4f4f4;
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font-size: .4rem;
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color: #333;
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}
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#open {
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display: flex;
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flex: 1;
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z-index: 100;
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font-size: .4rem;
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color: #333;
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align-items: flex-end;
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justify-content: center;
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}
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#open span {
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padding: .3rem .3rem;
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border: .05rem solid #333;
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border-radius: .2rem;
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}
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.read {
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display: flex;
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flex: 1 1 auto;
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}
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#prev {
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flex: 0 0 2rem;
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z-index: 100;
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}
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#viewer {
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flex: 1;
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}
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#next {
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flex: 0 0 2rem;
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z-index: 100;
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}
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.save {
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display: flex;
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}
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.box {
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padding: .2rem .2rem;
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justify-content: center;
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border-bottom: .1rem solid #f4f4f4;
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}
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.jump {
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display: flex;
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height: 1rem;
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border-bottom: .1rem solid #f4f4f4;
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}
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.jump input {
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flex: 1;
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padding: .1rem .1rem;
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margin: .2rem .2rem .2rem .4rem;
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outline: none;
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font-size: .3rem;
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}
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.jump span {
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flex: 0 0 1rem;
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}
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</style>
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</head>
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<body>
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<div id="ebook">
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<div class="mask">
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<div id="open">
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<span
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onclick="document.getElementById('input').click();document.getElementById('open').style.display = 'none'">选择本地书籍</span>
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<input type="file" id="input" style="display: none;">
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</div>
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<div class="read">
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<div id="prev" onclick="rendition.prev()"></div>
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<div id="viewer"></div>
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<div id="next" onclick="rendition.next()"></div>
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</div>
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<div class="meun">
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<div id="toc" onclick="showhide()"></div>
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<div id="page"></div>
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<div id="load"></div>
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</div>
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<div id="toc-mask" style="display: none;" onclick="showhide()"></div>
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<div id="toc-content" style="display: none;">
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<div class="intro">
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<img id="cover">
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<div style="display: flex;flex: 1;flex-direction: column;overflow-y: auto;">
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<div id="title" class="txt"></div>
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<div id="author" class="txt"></div>
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<div id="publisher" class="txt"></div>
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<div id="pubdate" class="txt"></div>
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</div>
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</div>
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<div class="save">
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<div class="txt box" onclick="save()">存档</div>
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<div class="txt box" onclick="get()">读档</div>
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<div class="txt box" onclick="del()">删档</div>
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</div>
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<div class="jump">
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<input id="jump" type="number" placeholder="0-1之间的数字，如0.25"
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oninput="if(value>1)value=1;if(value<0)value=0">
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<span class="txt" onclick="jump()">跳转</span>
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</div>
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<div id="content"></div>
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</div>
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</div>
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</div>
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<script>
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let url = location.search.substring(3);
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if (url !== "") {
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var book = ePub(url);
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document.getElementById("open").style.display = "none"
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} else {
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var book = ePub();
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var inputElement = document.getElementById("input");
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inputElement.addEventListener('change', function (e) {
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var file = e.target.files[0];
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if (window.FileReader) {
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var reader = new FileReader();
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reader.onload = openBook;
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reader.readAsArrayBuffer(file);
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}
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});
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function openBook(e) {
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var bookData = e.target.result;
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book.open(bookData, "binary");
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}
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}
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//渲染
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var rendition = book.renderTo("ebook", {
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with: window.innerWidth,
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height: window.innerHeight - 20
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});
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rendition.display();
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book.ready
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.then(() => {
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var local = localStorage.getItem(book.key() + '-locations');
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if (local) {
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return book.locations.load(local);
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} else {
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return book.locations.generate();
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}
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})
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.then(locations => {
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localStorage.setItem(book.key() + '-locations', book.locations.save());
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})
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// 目录
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book.loaded.navigation.then(toc => {
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var read = localStorage.getItem(book.key() + '-read');
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if (read) {
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rendition.display(read);
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}
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var $content = document.getElementById("content");
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toc.forEach(item => {
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var div = document.createElement("div");
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div.className = "item";
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div.textContent = item.label;
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div.addEventListener("click", () => {
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rendition.display(item.href);
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showhide()
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});
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$content.appendChild(div)
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})
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})
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//简介
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book.loaded.metadata.then(meta => {
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var $title = document.getElementById("title");
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var $author = document.getElementById("author");
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var $cover = document.getElementById("cover");
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var $publisher = document.getElementById("publisher");
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var $pubdate = document.getElementById("pubdate");
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$title.textContent = `书名：${meta.title}`;
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$author.textContent = `作者：${meta.creator}`;
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$publisher.textContent = `出版社：${meta.publisher}`;
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$pubdate.textContent = `时间：${meta.pubdate}`;
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if (book.archive) {
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book.archive.createUrl(book.cover)
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.then(url => {
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$cover.src = url;
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})
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} else {
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$cover.src = book.cover;
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}
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});
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//进度显示
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rendition.on('relocated', location => {
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var percent = book.locations.percentageFromCfi(location.start.cfi);
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var $page = document.getElementById("page");
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var $load = document.getElementById("load");
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$page.textContent = location.end.displayed.page + '/' + location.end.displayed.total;
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$load.textContent = Math.fround(percent * 100).toFixed(1) + '%';
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})
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//章节名显示
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rendition.on("rendered", section => {
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var $toc = document.getElementById("toc");
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$toc.textContent = "目录";
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$toc.textContent = book.navigation.get(section.href).label;
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})
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function showhide() {
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var $toc_content = document.getElementById("toc-content")
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var $mask = document.getElementById("toc-mask")
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if ($toc_content.style.display == "none") {
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$toc_content.style.display = ""
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$mask.style.display = ""
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} else {
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$toc_content.style.display = "none"
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$mask.style.display = "none"
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}
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}
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function jump() {
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$jump = document.getElementById("jump").value;
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rendition.display(book.locations.cfiFromPercentage($jump));
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showhide();
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document.getElementById("jump").value = "";
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}
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function save() {
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localStorage.setItem(book.key() + '-read', rendition.currentLocation().start.cfi)
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showhide()
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}
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function get() {
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rendition.display(localStorage.getItem(book.key() + '-read'));
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showhide()
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}
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function del() {
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localStorage.removeItem(book.key() + '-read');
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showhide()
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}
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</script>
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</body>
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</html>
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