jquery实现pdf翻书效果,实现步骤
时间: 2024-05-11 11:14:11 浏览: 9
1. 引入jQuery库和pdf.js库。
2. 将pdf文档转化为可供pdf.js使用的格式。
3. 创建canvas元素以显示pdf文档的每一页。
4. 使用pdf.js库加载pdf文档。
5. 使用jQuery创建翻页控制器,实现翻页效果。
6. 监听窗口大小变化事件,调整翻页控制器位置。
具体实现步骤如下:
1. 引入jQuery库和pdf.js库
```html
<!-- 引入jQuery库 -->
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<!-- 引入pdf.js库 -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.5.207/pdf.min.js"></script>
```
2. 将pdf文档转化为可供pdf.js使用的格式
```javascript
// 使用pdf.js库加载pdf文档
pdfjsLib.getDocument('path/to/pdf').promise.then(function(pdf) {
// 遍历pdf文档的每一页
for (let i = 1; i <= pdf.numPages; i++) {
// 将每一页转化为canvas元素
pdf.getPage(i).then(function(page) {
let canvas = document.createElement('canvas');
let context = canvas.getContext('2d');
let viewport = page.getViewport({scale: 1});
canvas.height = viewport.height;
canvas.width = viewport.width;
// 渲染canvas元素
page.render({
canvasContext: context,
viewport: viewport
});
// 将canvas元素添加到页面上
$('.book').append(canvas);
});
}
});
```
3. 创建canvas元素以显示pdf文档的每一页
```html
<div class="book"></div>
```
4. 使用pdf.js库加载pdf文档
```javascript
pdfjsLib.getDocument('path/to/pdf').promise.then(function(pdf) {
// 遍历pdf文档的每一页
for (let i = 1; i <= pdf.numPages; i++) {
// 将每一页转化为canvas元素
pdf.getPage(i).then(function(page) {
let canvas = document.createElement('canvas');
let context = canvas.getContext('2d');
let viewport = page.getViewport({scale: 1});
canvas.height = viewport.height;
canvas.width = viewport.width;
// 渲染canvas元素
page.render({
canvasContext: context,
viewport: viewport
});
// 将canvas元素添加到页面上
$('.book').append(canvas);
});
}
});
```
5. 使用jQuery创建翻页控制器,实现翻页效果
```javascript
// 创建翻页控制器
let currentPage = 1;
let totalPages = $('.book canvas').length;
$('.book').prepend('<div class="prev"></div><div class="next"></div>');
$('.book .prev').on('click', function() {
if (currentPage > 1) {
$('.book canvas').eq(currentPage - 1).removeClass('active');
$('.book canvas').eq(currentPage - 2).addClass('active');
currentPage--;
}
});
$('.book .next').on('click', function() {
if (currentPage < totalPages) {
$('.book canvas').eq(currentPage - 1).removeClass('active');
$('.book canvas').eq(currentPage).addClass('active');
currentPage++;
}
});
// 初始化翻页控制器
$('.book canvas').eq(0).addClass('active');
```
6. 监听窗口大小变化事件,调整翻页控制器位置
```javascript
$(window).on('resize', function() {
// 调整翻页控制器位置
let bookWidth = $('.book').width();
let prevWidth = $('.book .prev').width();
let nextWidth = $('.book .next').width();
$('.book .prev').css('left', (bookWidth - prevWidth - nextWidth) / 2);
$('.book .next').css('right', (bookWidth - prevWidth - nextWidth) / 2);
});
```
完整代码如下:
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>PDF翻书效果</title>
<style>
.book {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
}
.book canvas {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
transition: transform 0.5s ease;
}
.book canvas.active {
transform: rotateY(0deg);
z-index: 1;
}
.book canvas:not(.active) {
transform: rotateY(-180deg);
z-index: 0;
}
.book .prev, .book .next {
position: absolute;
top: 50%;
transform: translateY(-50%);
width: 30px;
height: 30px;
background-color: rgba(0, 0, 0, 0.5);
border-radius: 50%;
cursor: pointer;
}
.book .prev:before, .book .next:after {
content: '';
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 10px;
height: 10px;
border-style: solid;
border-width: 0 3px 3px 0;
transition: border-color 0.25s ease;
}
.book .prev:before {
transform: translate(-50%, -50%) rotate(-135deg);
}
.book .next:after {
transform: translate(-50%, -50%) rotate(45deg);
}
.book .prev:hover:before, .book .next:hover:after {
border-color: rgba(255, 255, 255, 0.75);
}
.book .prev {
left: calc((100% - 60px) / 2);
}
.book .next {
right: calc((100% - 60px) / 2);
}
</style>
</head>
<body>
<div class="book"></div>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.5.207/pdf.min.js"></script>
<script>
$(function() {
// 创建翻页控制器
let currentPage = 1;
let totalPages = $('.book canvas').length;
$('.book').prepend('<div class="prev"></div><div class="next"></div>');
$('.book .prev').on('click', function() {
if (currentPage > 1) {
$('.book canvas').eq(currentPage - 1).removeClass('active');
$('.book canvas').eq(currentPage - 2).addClass('active');
currentPage--;
}
});
$('.book .next').on('click', function() {
if (currentPage < totalPages) {
$('.book canvas').eq(currentPage - 1).removeClass('active');
$('.book canvas').eq(currentPage).addClass('active');
currentPage++;
}
});
// 初始化翻页控制器
$('.book canvas').eq(0).addClass('active');
// 监听窗口大小变化事件,调整翻页控制器位置
$(window).on('resize', function() {
let bookWidth = $('.book').width();
let prevWidth = $('.book .prev').width();
let nextWidth = $('.book .next').width();
$('.book .prev').css('left', (bookWidth - prevWidth - nextWidth) / 2);
$('.book .next').css('right', (bookWidth - prevWidth - nextWidth) / 2);
});
// 使用pdf.js库加载pdf文档
pdfjsLib.getDocument('path/to/pdf').promise.then(function(pdf) {
// 遍历pdf文档的每一页
for (let i = 1; i <= pdf.numPages; i++) {
// 将每一页转化为canvas元素
pdf.getPage(i).then(function(page) {
let canvas = document.createElement('canvas');
let context = canvas.getContext('2d');
let viewport = page.getViewport({scale: 1});
canvas.height = viewport.height;
canvas.width = viewport.width;
// 渲染canvas元素
page.render({
canvasContext: context,
viewport: viewport
});
// 将canvas元素添加到页面上
$('.book').append(canvas);
});
}
});
});
</script>
</body>
</html>
```