epubjs
Version:
Parse and Render Epubs
158 lines (117 loc) • 4.45 kB
HTML
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>EPUB.js Spreads Example</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.5/jszip.min.js"></script>
<script src="../dist/epub.legacy.js"></script>
<link rel="stylesheet" type="text/css" href="examples.css">
</head>
<body>
<!-- <div id="title"></div> -->
<select id="toc"></select>
<div id="viewer" class="spreads"></div>
<a id="prev" href="#prev" class="arrow">‹</a>
<a id="next" href="#next" class="arrow">›</a>
<script>
var params = URLSearchParams && new URLSearchParams(document.location.search.substring(1));
var url = params && params.get("url") && decodeURIComponent(params.get("url"));
var currentSectionIndex = (params && params.get("loc")) ? params.get("loc") : undefined;
// Load the opf
var book = ePub(url || "https://s3.amazonaws.com/moby-dick/moby-dick.epub");
var rendition = book.renderTo("viewer", {
width: "100%",
height: 600,
spread: "always"
});
rendition.display(currentSectionIndex);
book.ready.then(function() {
var next = document.getElementById("next");
next.addEventListener("click", function(e){
book.package.metadata.direction === "rtl" ? rendition.prev() : rendition.next();
e.preventDefault();
}, false);
var prev = document.getElementById("prev");
prev.addEventListener("click", function(e){
book.package.metadata.direction === "rtl" ? rendition.next() : rendition.prev();
e.preventDefault();
}, false);
var keyListener = function(e){
// Left Key
if ((e.keyCode || e.which) == 37) {
book.package.metadata.direction === "rtl" ? rendition.next() : rendition.prev();
}
// Right Key
if ((e.keyCode || e.which) == 39) {
book.package.metadata.direction === "rtl" ? rendition.prev() : rendition.next();
}
};
rendition.on("keyup", keyListener);
document.addEventListener("keyup", keyListener, false);
})
var title = document.getElementById("title");
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", "");
}
}
}
});
rendition.on("relocated", function(location){
console.log(location);
var next = book.package.metadata.direction === "rtl" ? document.getElementById("prev") : document.getElementById("next");
var prev = book.package.metadata.direction === "rtl" ? document.getElementById("next") : document.getElementById("prev");
if (location.atEnd) {
next.style.visibility = "hidden";
} else {
next.style.visibility = "visible";
}
if (location.atStart) {
prev.style.visibility = "hidden";
} else {
prev.style.visibility = "visible";
}
});
rendition.on("layout", function(layout) {
let viewer = document.getElementById("viewer");
if (layout.spread) {
viewer.classList.remove('single');
} else {
viewer.classList.add('single');
}
});
window.addEventListener("unload", function () {
console.log("unloading");
this.book.destroy();
});
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;
};
});
</script>
</body>
</html>