epubjs
Version:
Parse and Render Epubs
140 lines (115 loc) • 3.94 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.js"></script>
<link rel="stylesheet" type="text/css" href="examples.css">
</head>
<body>
<div id="title"></div>
<div id="viewer" class="spreads"></div>
<a id="prev" href="#prev" class="arrow">‹</a>
<a id="next" href="#next" class="arrow">›</a>
<div id="controls">
<input id="current-percent" size="3" value="0" /> %
</div>
<script>
var controls = document.getElementById("controls");
var currentPage = document.getElementById("current-percent");
var slider = document.createElement("input");
var slide = function(){
var cfi = book.locations.cfiFromPercentage(slider.value / 100);
rendition.display(cfi);
};
var mouseDown = false;
// Load the opf
var book = ePub("https://s3.amazonaws.com/moby-dick/moby-dick.epub");
var rendition = book.renderTo("viewer", {
width: "100%",
height: 600
});
var displayed = rendition.display();
var title = document.getElementById("title");
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);
var keyListener = function(e){
// Left Key
if ((e.keyCode || e.which) == 37) {
rendition.prev();
}
// Right Key
if ((e.keyCode || e.which) == 39) {
rendition.next();
}
};
rendition.on("keyup", keyListener);
document.addEventListener("keyup", keyListener, false);
book.ready.then(function(){
// Load in stored locations from json or local storage
var key = book.key()+'-locations';
var stored = localStorage.getItem(key);
if (stored) {
return book.locations.load(stored);
} else {
// Or generate the locations on the fly
// Can pass an option number of chars to break sections by
// default is 150 chars
return book.locations.generate(1600);
}
})
.then(function(locations){
controls.style.display = "block";
slider.setAttribute("type", "range");
slider.setAttribute("min", 0);
slider.setAttribute("max", 100);
// slider.setAttribute("max", book.locations.total+1);
slider.setAttribute("step", 1);
slider.setAttribute("value", 0);
slider.addEventListener("change", slide, false);
slider.addEventListener("mousedown", function(){
mouseDown = true;
}, false);
slider.addEventListener("mouseup", function(){
mouseDown = false;
}, false);
// Wait for book to be rendered to get current page
displayed.then(function(){
// Get the current CFI
var currentLocation = rendition.currentLocation();
// Get the Percentage (or location) from that CFI
var currentPage = book.locations.percentageFromCfi(currentLocation.start.cfi);
slider.value = currentPage;
currentPage.value = currentPage;
});
controls.appendChild(slider);
currentPage.addEventListener("change", function(){
var cfi = book.locations.cfiFromPercentage(currentPage.value/100);
rendition.display(cfi);
}, false);
// Listen for location changed event, get percentage from CFI
rendition.on('relocated', function(location){
var percent = book.locations.percentageFromCfi(location.start.cfi);
var percentage = Math.floor(percent * 100);
if(!mouseDown) {
slider.value = percentage;
}
currentPage.value = percentage;
console.log(location);
});
// Save out the generated locations to JSON
localStorage.setItem(book.key()+'-locations', book.locations.save());
});
</script>
</body>
</html>