212 lines
6.9 KiB
HTML
212 lines
6.9 KiB
HTML
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<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>图片转PDF</title>
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<style>
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body {
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font-family: Arial, sans-serif;
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display: flex;
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flex-direction: column;
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align-items: center;
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padding: 20px;
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margin: 0;
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background-color: #f4f4f4;
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}
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h1 {
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font-size: 2.5vw;
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margin-bottom: 20px;
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color: #333;
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}
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#image-container {
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display: flex;
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flex-wrap: wrap;
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gap: 15px;
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justify-content: center;
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margin: 20px 0;
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padding: 10px;
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border: 2px dashed #ccc;
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background-color: #fff;
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min-height: 100px;
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width: 100%;
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max-width: 1200px;
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}
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.image-item {
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position: relative;
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border: 1px solid #ccc;
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overflow: hidden;
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transition: transform 0.2s;
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cursor: move; /* 提示用户可以拖拽 */
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}
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.image-item:hover {
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transform: scale(1.05);
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}
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.image-item img {
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width: 100%;
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height: 100%;
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object-fit: cover;
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}
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.delete-btn {
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position: absolute;
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top: 5px;
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right: 5px;
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background-color: rgb(0, 0, 0);
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opacity: 0.5;
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color: white;
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margin: 0;
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border: none;
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border-radius: 50%;
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width: 20px;
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height: 20px;
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padding: 0;
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font-size: 12px;
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cursor: pointer;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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button {
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padding: 10px 20px;
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font-size: 16px;
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background-color: #007BFF;
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color: white;
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border: none;
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border-radius: 5px;
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cursor: pointer;
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margin-top: 20px;
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}
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button:hover {
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background-color: #0056b3;
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}
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@media (max-width: 600px) {
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h1 {
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font-size: 5vw;
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}
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button {
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font-size: 14px;
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padding: 8px 16px;
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}
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}
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</style>
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</head>
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<body>
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<h1>图片转PDF</h1>
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<input type="file" id="file-input" multiple accept="image/*">
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<div id="image-container"></div>
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<button id="generate-pdf">生成PDF</button>
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<!-- 引入外部库 -->
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<script src="../../../libs/Sortable.min.js"></script>
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<script src="../../../libs/pdf-lib.min.js"></script>
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<script>
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const fileInput = document.getElementById('file-input');
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const imageContainer = document.getElementById('image-container');
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const generateButton = document.getElementById('generate-pdf');
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let images = [];
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// 文件选择事件
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fileInput.addEventListener('change', (e) => {
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handleFiles(e.target.files);
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});
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// 生成PDF
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generateButton.addEventListener('click', async () => {
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if (images.length === 0) {
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alert('请先添加至少一张图片！');
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return;
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}
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const pdfDoc = await PDFLib.PDFDocument.create();
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for (const image of images) {
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const imgBytes = await fetch(image.src).then(res => res.arrayBuffer());
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let img = image.file.type === 'image/png' ?
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await pdfDoc.embedPng(imgBytes) :
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await pdfDoc.embedJpg(imgBytes);
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const page = pdfDoc.addPage([img.width, img.height]);
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page.drawImage(img, { x: 0, y: 0, width: img.width, height: img.height });
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}
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const pdfBytes = await pdfDoc.save();
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const blob = new Blob([pdfBytes], { type: 'application/pdf' });
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const url = URL.createObjectURL(blob);
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const a = document.createElement('a');
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a.href = url;
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a.download = '图片合集.pdf';
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a.click();
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URL.revokeObjectURL(url);
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});
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// 处理文件
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function handleFiles(files) {
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Array.from(files).forEach(file => {
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if (file.type.startsWith('image/')) {
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const reader = new FileReader();
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reader.onload = function(e) {
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const imgWrapper = document.createElement('div');
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imgWrapper.classList.add('image-item');
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const img = document.createElement('img');
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img.src = e.target.result;
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const deleteBtn = document.createElement('button');
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deleteBtn.classList.add('delete-btn');
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deleteBtn.innerHTML = '×';
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deleteBtn.addEventListener('click', () => {
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imgWrapper.remove();
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images = images.filter(item => item.src !== img.src);
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});
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imgWrapper.appendChild(img);
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imgWrapper.appendChild(deleteBtn);
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imageContainer.appendChild(imgWrapper);
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images.push({ src: e.target.result, file });
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setImageSize();
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};
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reader.readAsDataURL(file);
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}
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});
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}
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// 获取视口宽度
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function getViewportWidth() {
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return window.innerWidth || document.documentElement.clientWidth;
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}
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// 设置图片尺寸
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function setImageSize() {
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const viewportWidth = getViewportWidth();
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const imageItems = document.querySelectorAll('.image-item');
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let size = viewportWidth >= 1200 ? 150 : viewportWidth >= 600 ? 100 : 80;
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imageItems.forEach(item => {
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item.style.width = `${size}px`;
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item.style.height = `${size}px`;
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});
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}
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// 监听窗口resize事件
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window.addEventListener('resize', setImageSize);
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setImageSize();
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// 拖拽导入支持
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imageContainer.addEventListener('dragover', (e) => {
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e.preventDefault();
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});
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imageContainer.addEventListener('drop', (e) => {
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e.preventDefault();
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if (e.dataTransfer.files.length > 0) {
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handleFiles(e.dataTransfer.files);
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}
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});
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// 初始化 Sortable.js 进行拖拽排序
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new Sortable(imageContainer, {
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animation: 150,
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onEnd: function(evt) {
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// 更新 images 数组顺序
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const movedItem = images.splice(evt.oldIndex, 1)[0];
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images.splice(evt.newIndex, 0, movedItem);
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}
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});
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</script>
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</body>
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</html>
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