feat: 更新PDF转换工具，支持导出为Word文档
修改了index.html以更新标题和描述，增强了用户界面，添加了导出为Word文档的功能。更新了README.md以反映新功能，增加了使用方法和功能特点的描述。同时，调整了CSS样式以支持新的导出选项，确保用户体验流畅。修复了LICENSE文件的格式问题。
This commit is contained in:
@@ -1,211 +1,225 @@
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:root {
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--primary-color: #4361ee;
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--secondary-color: #3f37c9;
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--accent-color: #4895ef;
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--light-color: #f8f9fa;
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--dark-color: #212529;
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}
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body {
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font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
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background-color: #f5f7fa;
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color: var(--dark-color);
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line-height: 1.6;
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}
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.app-container {
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max-width: 1200px;
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margin: 0 auto;
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padding: 2rem 1rem;
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}
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.header {
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text-align: center;
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margin-bottom: 2rem;
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}
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.header h1 {
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font-weight: 700;
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color: var(--primary-color);
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margin-bottom: 0.5rem;
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}
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.header p {
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color: #6c757d;
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font-size: 1.1rem;
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}
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.card {
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border-radius: 12px;
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box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
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border: none;
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overflow: hidden;
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transition: transform 0.3s ease;
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}
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.card:hover {
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transform: translateY(-5px);
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}
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.card-header {
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background-color: var(--primary-color);
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color: white;
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font-weight: 600;
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padding: 1rem;
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}
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.upload-area {
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border: 2px dashed #dee2e6;
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border-radius: 8px;
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padding: 3rem 2rem;
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text-align: center;
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cursor: pointer;
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transition: all 0.3s ease;
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background-color: #f8f9fa;
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}
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.upload-area:hover, .upload-area.dragover {
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border-color: var(--primary-color);
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background-color: rgba(67, 97, 238, 0.05);
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}
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.upload-icon {
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font-size: 3rem;
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color: var(--primary-color);
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margin-bottom: 1rem;
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}
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.btn-primary {
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background-color: var(--primary-color);
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border-color: var(--primary-color);
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}
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.btn-primary:hover {
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background-color: var(--secondary-color);
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border-color: var(--secondary-color);
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}
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.btn-outline-primary {
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color: var(--primary-color);
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border-color: var(--primary-color);
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}
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.btn-outline-primary:hover {
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background-color: var(--primary-color);
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color: white;
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}
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.progress {
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height: 10px;
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border-radius: 5px;
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}
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.pdf-info {
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display: flex;
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justify-content: space-between;
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margin-bottom: 1rem;
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}
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.pdf-info-item {
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text-align: center;
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padding: 0.5rem;
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background-color: #f8f9fa;
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border-radius: 8px;
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flex: 1;
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margin: 0 0.5rem;
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}
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.pdf-info-item .value {
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font-size: 1.2rem;
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font-weight: 600;
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color: var(--primary-color);
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}
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.pdf-info-item .label {
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font-size: 0.9rem;
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color: #6c757d;
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}
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.preview-container {
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margin-top: 2rem;
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}
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.preview-item {
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margin-bottom: 2rem;
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position: relative;
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}
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.preview-item canvas {
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width: 100%;
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border-radius: 8px;
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box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
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}
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.preview-item .page-number {
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position: absolute;
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top: 10px;
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right: 10px;
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background-color: rgba(0, 0, 0, 0.7);
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color: white;
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padding: 0.25rem 0.5rem;
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border-radius: 4px;
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font-size: 0.8rem;
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}
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.export-options {
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margin-top: 1rem;
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display: flex;
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align-items: center;
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}
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.export-options .form-check {
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margin-right: 1.5rem;
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}
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footer {
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text-align: center;
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margin-top: 3rem;
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padding-top: 1rem;
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border-top: 1px solid #dee2e6;
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color: #6c757d;
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}
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@media (max-width: 768px) {
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.pdf-info {
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flex-direction: column;
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}
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.pdf-info-item {
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margin: 0.5rem 0;
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}
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.export-options {
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flex-direction: column;
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align-items: flex-start;
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}
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.export-options .form-check {
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margin-bottom: 0.5rem;
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}
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}
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/* 加载动画 */
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.spinner {
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width: 40px;
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height: 40px;
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margin: 100px auto;
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background-color: var(--primary-color);
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border-radius: 100%;
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-webkit-animation: sk-scaleout 1.0s infinite ease-in-out;
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animation: sk-scaleout 1.0s infinite ease-in-out;
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}
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@-webkit-keyframes sk-scaleout {
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0% { -webkit-transform: scale(0) }
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100% { -webkit-transform: scale(1.0); opacity: 0; }
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}
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@keyframes sk-scaleout {
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0% { transform: scale(0); -webkit-transform: scale(0); }
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100% { transform: scale(1.0); -webkit-transform: scale(1.0); opacity: 0; }
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:root {
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--primary-color: #4361ee;
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--secondary-color: #3f37c9;
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--accent-color: #4895ef;
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--light-color: #f8f9fa;
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--dark-color: #212529;
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}
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body {
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font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
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background-color: #f5f7fa;
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color: var(--dark-color);
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line-height: 1.6;
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}
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.app-container {
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max-width: 1200px;
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margin: 0 auto;
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padding: 2rem 1rem;
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}
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.header {
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text-align: center;
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margin-bottom: 2rem;
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}
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.header h1 {
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font-weight: 700;
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color: var(--primary-color);
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margin-bottom: 0.5rem;
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}
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.header p {
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color: #6c757d;
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font-size: 1.1rem;
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}
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.card {
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border-radius: 12px;
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box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
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border: none;
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overflow: hidden;
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transition: transform 0.3s ease;
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}
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.card:hover {
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transform: translateY(-5px);
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}
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.card-header {
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background-color: var(--primary-color);
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color: white;
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font-weight: 600;
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padding: 1rem;
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}
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.upload-area {
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border: 2px dashed #dee2e6;
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border-radius: 8px;
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padding: 3rem 2rem;
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text-align: center;
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cursor: pointer;
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transition: all 0.3s ease;
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background-color: #f8f9fa;
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}
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.upload-area:hover, .upload-area.dragover {
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border-color: var(--primary-color);
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background-color: rgba(67, 97, 238, 0.05);
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}
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.upload-icon {
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font-size: 3rem;
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color: var(--primary-color);
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margin-bottom: 1rem;
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}
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.btn-primary {
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background-color: var(--primary-color);
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border-color: var(--primary-color);
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}
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.btn-primary:hover {
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background-color: var(--secondary-color);
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border-color: var(--secondary-color);
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}
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.btn-outline-primary {
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color: var(--primary-color);
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border-color: var(--primary-color);
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}
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.btn-outline-primary:hover {
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background-color: var(--primary-color);
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color: white;
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}
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.progress {
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height: 10px;
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border-radius: 5px;
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}
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.pdf-info {
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display: flex;
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justify-content: space-between;
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margin-bottom: 1rem;
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}
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.pdf-info-item {
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text-align: center;
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padding: 0.5rem;
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background-color: #f8f9fa;
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border-radius: 8px;
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flex: 1;
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margin: 0 0.5rem;
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}
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.pdf-info-item .value {
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font-size: 1.2rem;
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font-weight: 600;
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color: var(--primary-color);
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}
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.pdf-info-item .label {
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font-size: 0.9rem;
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color: #6c757d;
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}
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.preview-container {
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margin-top: 2rem;
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}
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.preview-item {
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margin-bottom: 2rem;
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position: relative;
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}
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.preview-item canvas {
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width: 100%;
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border-radius: 8px;
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box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
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}
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.preview-item .page-number {
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position: absolute;
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top: 10px;
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right: 10px;
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background-color: rgba(0, 0, 0, 0.7);
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color: white;
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padding: 0.25rem 0.5rem;
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border-radius: 4px;
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font-size: 0.8rem;
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}
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.export-options {
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margin-top: 1rem;
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}
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.export-options .form-check {
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margin-right: 1.5rem;
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margin-bottom: 0.5rem;
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}
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.export-type-selector {
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margin-bottom: 1rem;
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}
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.btn-outline-primary {
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color: var(--primary-color);
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border-color: var(--primary-color);
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}
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.btn-outline-primary:hover, .btn-check:checked + .btn-outline-primary {
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background-color: var(--primary-color);
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border-color: var(--primary-color);
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color: white;
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}
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footer {
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text-align: center;
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margin-top: 3rem;
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padding-top: 1rem;
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border-top: 1px solid #dee2e6;
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color: #6c757d;
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}
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@media (max-width: 768px) {
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.pdf-info {
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flex-direction: column;
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}
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.pdf-info-item {
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margin: 0.5rem 0;
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}
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.export-options {
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flex-direction: column;
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align-items: flex-start;
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}
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.export-options .form-check {
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margin-bottom: 0.5rem;
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}
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}
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/* 加载动画 */
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.spinner {
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width: 40px;
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height: 40px;
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margin: 100px auto;
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background-color: var(--primary-color);
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border-radius: 100%;
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-webkit-animation: sk-scaleout 1.0s infinite ease-in-out;
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animation: sk-scaleout 1.0s infinite ease-in-out;
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}
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@-webkit-keyframes sk-scaleout {
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0% { -webkit-transform: scale(0) }
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100% { -webkit-transform: scale(1.0); opacity: 0; }
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}
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@keyframes sk-scaleout {
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0% { transform: scale(0); -webkit-transform: scale(0); }
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100% { transform: scale(1.0); -webkit-transform: scale(1.0); opacity: 0; }
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}
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19
cssjs/js/docx.esm.js
Normal file
19
cssjs/js/docx.esm.js
Normal file
@@ -0,0 +1,19 @@
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// 等待 docx.min.js 加载完成
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const waitForDocx = new Promise((resolve) => {
|
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const checkDocx = () => {
|
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if (window.docx && window.docx.Document) {
|
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resolve();
|
||||
} else {
|
||||
setTimeout(checkDocx, 100);
|
||||
}
|
||||
};
|
||||
checkDocx();
|
||||
});
|
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|
||||
// 导出 docx 库的所有必要组件
|
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export const Document = waitForDocx.then(() => window.docx.Document);
|
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export const Paragraph = waitForDocx.then(() => window.docx.Paragraph);
|
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export const ImageRun = waitForDocx.then(() => window.docx.ImageRun);
|
||||
export const HeadingLevel = waitForDocx.then(() => window.docx.HeadingLevel);
|
||||
export const AlignmentType = waitForDocx.then(() => window.docx.AlignmentType);
|
||||
export const Packer = waitForDocx.then(() => window.docx.Packer);
|
||||
21620
cssjs/js/docx.min.js
vendored
Normal file
21620
cssjs/js/docx.min.js
vendored
Normal file
File diff suppressed because it is too large
Load Diff
928
cssjs/js/main.js
928
cssjs/js/main.js
@@ -1,378 +1,552 @@
|
||||
// 导入依赖库
|
||||
import * as pdfjsLib from './pdf.mjs';
|
||||
import JSZip from './jszip.min.js';
|
||||
|
||||
// 设置PDF.js worker路径
|
||||
pdfjsLib.GlobalWorkerOptions.workerSrc = 'cssjs/js/pdf.worker.mjs';
|
||||
|
||||
// 全局变量
|
||||
let pdfDocument = null;
|
||||
let pdfFile = null;
|
||||
let renderedPages = [];
|
||||
|
||||
// DOM元素
|
||||
const uploadArea = document.getElementById('upload-area');
|
||||
const pdfFileInput = document.getElementById('pdf-file-input');
|
||||
const selectFileBtn = document.getElementById('select-file-btn');
|
||||
const loadingContainer = document.getElementById('loading-container');
|
||||
const pdfInfoContainer = document.getElementById('pdf-info-container');
|
||||
const previewContainer = document.getElementById('preview-container');
|
||||
const previewItems = document.getElementById('preview-items');
|
||||
const exportBtn = document.getElementById('export-btn');
|
||||
const combinePagesSwitch = document.getElementById('combine-pages-switch');
|
||||
const highQualitySwitch = document.getElementById('high-quality-switch');
|
||||
|
||||
// PDF信息显示元素
|
||||
const pdfNameValue = document.getElementById('pdf-name-value');
|
||||
const pdfSizeValue = document.getElementById('pdf-size-value');
|
||||
const pdfPagesValue = document.getElementById('pdf-pages-value');
|
||||
|
||||
// 事件监听器
|
||||
document.addEventListener('DOMContentLoaded', function() {
|
||||
// 初始化事件监听
|
||||
initEventListeners();
|
||||
});
|
||||
|
||||
// 初始化事件监听器
|
||||
function initEventListeners() {
|
||||
selectFileBtn.addEventListener('click', () => pdfFileInput.click());
|
||||
pdfFileInput.addEventListener('change', handleFileSelect);
|
||||
exportBtn.addEventListener('click', exportImages);
|
||||
|
||||
// 拖放功能
|
||||
uploadArea.addEventListener('dragover', (e) => {
|
||||
e.preventDefault();
|
||||
uploadArea.classList.add('dragover');
|
||||
});
|
||||
|
||||
uploadArea.addEventListener('dragleave', () => {
|
||||
uploadArea.classList.remove('dragover');
|
||||
});
|
||||
|
||||
uploadArea.addEventListener('drop', (e) => {
|
||||
e.preventDefault();
|
||||
uploadArea.classList.remove('dragover');
|
||||
|
||||
if (e.dataTransfer.files.length > 0) {
|
||||
const file = e.dataTransfer.files[0];
|
||||
if (file.type === 'application/pdf') {
|
||||
pdfFileInput.files = e.dataTransfer.files;
|
||||
handleFileSelect(e);
|
||||
} else {
|
||||
showError('请选择PDF文件');
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
// 其余函数保持不变
|
||||
// ...
|
||||
|
||||
// 处理文件选择
|
||||
function handleFileSelect(e) {
|
||||
const file = pdfFileInput.files[0];
|
||||
|
||||
if (!file) return;
|
||||
|
||||
if (file.type !== 'application/pdf') {
|
||||
showError('请选择PDF文件');
|
||||
return;
|
||||
}
|
||||
|
||||
if (file.size > 20 * 1024 * 1024) { // 20MB
|
||||
showError('文件大小不能超过20MB');
|
||||
return;
|
||||
}
|
||||
|
||||
pdfFile = file;
|
||||
|
||||
// 显示加载状态
|
||||
uploadArea.style.display = 'none';
|
||||
loadingContainer.style.display = 'block';
|
||||
previewContainer.style.display = 'none';
|
||||
pdfInfoContainer.style.display = 'none';
|
||||
previewItems.innerHTML = '';
|
||||
renderedPages = [];
|
||||
|
||||
// 读取PDF文件
|
||||
const reader = new FileReader();
|
||||
reader.onload = function(event) {
|
||||
const typedArray = new Uint8Array(event.target.result);
|
||||
loadPdfFromData(typedArray);
|
||||
};
|
||||
reader.readAsArrayBuffer(file);
|
||||
}
|
||||
|
||||
// 从ArrayBuffer加载PDF
|
||||
function loadPdfFromData(data) {
|
||||
pdfjsLib.getDocument({ data }).promise
|
||||
.then(pdf => {
|
||||
pdfDocument = pdf;
|
||||
|
||||
// 更新PDF信息
|
||||
pdfNameValue.textContent = pdfFile.name;
|
||||
pdfSizeValue.textContent = formatFileSize(pdfFile.size);
|
||||
pdfPagesValue.textContent = pdf.numPages;
|
||||
|
||||
// 渲染预览
|
||||
renderPdfPreview(pdf);
|
||||
})
|
||||
.catch(error => {
|
||||
console.error('PDF加载错误:', error);
|
||||
showError('无法加载PDF文件，请确保文件未损坏');
|
||||
resetUI();
|
||||
});
|
||||
}
|
||||
|
||||
// 渲染PDF预览
|
||||
function renderPdfPreview(pdf) {
|
||||
const totalPages = pdf.numPages;
|
||||
let renderedCount = 0;
|
||||
|
||||
// 更新加载文本
|
||||
document.getElementById('loading-text').textContent = `正在渲染预览 (0/${totalPages})`;
|
||||
|
||||
// 为每一页创建预览
|
||||
for (let pageNumber = 1; pageNumber <= totalPages; pageNumber++) {
|
||||
pdf.getPage(pageNumber).then(page => {
|
||||
const scale = 0.5; // 预览缩放比例
|
||||
const viewport = page.getViewport({ scale });
|
||||
|
||||
// 创建canvas元素
|
||||
const canvas = document.createElement('canvas');
|
||||
const context = canvas.getContext('2d');
|
||||
canvas.width = viewport.width;
|
||||
canvas.height = viewport.height;
|
||||
|
||||
// 渲染PDF页面到canvas
|
||||
const renderContext = {
|
||||
canvasContext: context,
|
||||
viewport: viewport
|
||||
};
|
||||
|
||||
page.render(renderContext).promise.then(() => {
|
||||
renderedCount++;
|
||||
document.getElementById('loading-text').textContent = `正在渲染预览 (${renderedCount}/${totalPages})`;
|
||||
|
||||
// 存储渲染的页面
|
||||
renderedPages[pageNumber - 1] = {
|
||||
pageNumber: pageNumber,
|
||||
canvas: canvas,
|
||||
width: viewport.width,
|
||||
height: viewport.height
|
||||
};
|
||||
|
||||
// 如果所有页面都已渲染，显示预览
|
||||
if (renderedCount === totalPages) {
|
||||
displayPreviews();
|
||||
}
|
||||
});
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
// 显示预览
|
||||
function displayPreviews() {
|
||||
// 按页码排序
|
||||
renderedPages.sort((a, b) => a.pageNumber - b.pageNumber);
|
||||
|
||||
// 清空预览容器
|
||||
previewItems.innerHTML = '';
|
||||
|
||||
// 添加每一页的预览
|
||||
renderedPages.forEach(page => {
|
||||
const colDiv = document.createElement('div');
|
||||
colDiv.className = 'col-md-6 col-lg-4 preview-item';
|
||||
|
||||
const pageNumberDiv = document.createElement('div');
|
||||
pageNumberDiv.className = 'page-number';
|
||||
pageNumberDiv.textContent = `第 ${page.pageNumber} 页`;
|
||||
|
||||
// 克隆canvas以避免原始canvas被修改
|
||||
const displayCanvas = document.createElement('canvas');
|
||||
displayCanvas.width = page.canvas.width;
|
||||
displayCanvas.height = page.canvas.height;
|
||||
const displayContext = displayCanvas.getContext('2d');
|
||||
displayContext.drawImage(page.canvas, 0, 0);
|
||||
|
||||
colDiv.appendChild(displayCanvas);
|
||||
colDiv.appendChild(pageNumberDiv);
|
||||
previewItems.appendChild(colDiv);
|
||||
});
|
||||
|
||||
// 显示预览和控制面板
|
||||
loadingContainer.style.display = 'none';
|
||||
pdfInfoContainer.style.display = 'block';
|
||||
previewContainer.style.display = 'block';
|
||||
}
|
||||
|
||||
// 导出图片
|
||||
function exportImages() {
|
||||
if (!pdfDocument || renderedPages.length === 0) {
|
||||
showError('没有可导出的内容');
|
||||
return;
|
||||
}
|
||||
|
||||
const combinePages = combinePagesSwitch.checked;
|
||||
const highQuality = highQualitySwitch.checked;
|
||||
const scale = highQuality ? 2.0 : 1.0;
|
||||
|
||||
// 显示加载状态
|
||||
loadingContainer.style.display = 'block';
|
||||
document.getElementById('loading-text').textContent = '正在准备导出...';
|
||||
|
||||
if (combinePages) {
|
||||
// 合并为单张图片
|
||||
exportCombinedImage(scale);
|
||||
} else {
|
||||
// 导出为多张图片
|
||||
exportMultipleImages(scale);
|
||||
}
|
||||
}
|
||||
|
||||
// 导出合并的单张图片
|
||||
function exportCombinedImage(scale) {
|
||||
// 计算合并后的图片尺寸
|
||||
let totalHeight = 0;
|
||||
let maxWidth = 0;
|
||||
|
||||
renderedPages.forEach(page => {
|
||||
totalHeight += page.height * (scale / 0.5);
|
||||
maxWidth = Math.max(maxWidth, page.width * (scale / 0.5));
|
||||
});
|
||||
|
||||
// 创建合并的canvas
|
||||
const combinedCanvas = document.createElement('canvas');
|
||||
combinedCanvas.width = maxWidth;
|
||||
combinedCanvas.height = totalHeight;
|
||||
const combinedContext = combinedCanvas.getContext('2d');
|
||||
|
||||
// 填充白色背景
|
||||
combinedContext.fillStyle = '#FFFFFF';
|
||||
combinedContext.fillRect(0, 0, combinedCanvas.width, combinedCanvas.height);
|
||||
|
||||
// 重新渲染每一页到合并的canvas
|
||||
let currentY = 0;
|
||||
let renderedCount = 0;
|
||||
|
||||
const renderNextPage = (index) => {
|
||||
if (index >= renderedPages.length) {
|
||||
// 所有页面都已渲染，导出图片
|
||||
combinedCanvas.toBlob(blob => {
|
||||
saveAs(blob, `${pdfFile.name.replace('.pdf', '')}_combined.png`);
|
||||
loadingContainer.style.display = 'none';
|
||||
}, 'image/png');
|
||||
return;
|
||||
}
|
||||
|
||||
const page = renderedPages[index];
|
||||
|
||||
// 更新加载文本
|
||||
document.getElementById('loading-text').textContent = `正在合并页面 (${index + 1}/${renderedPages.length})`;
|
||||
|
||||
// 获取原始页面
|
||||
pdfDocument.getPage(page.pageNumber).then(pdfPage => {
|
||||
const viewport = pdfPage.getViewport({ scale });
|
||||
|
||||
// 创建临时canvas
|
||||
const tempCanvas = document.createElement('canvas');
|
||||
tempCanvas.width = viewport.width;
|
||||
tempCanvas.height = viewport.height;
|
||||
const tempContext = tempCanvas.getContext('2d');
|
||||
|
||||
// 渲染到临时canvas
|
||||
const renderContext = {
|
||||
canvasContext: tempContext,
|
||||
viewport: viewport
|
||||
};
|
||||
|
||||
pdfPage.render(renderContext).promise.then(() => {
|
||||
// 将临时canvas的内容绘制到合并的canvas
|
||||
const x = (maxWidth - viewport.width) / 2; // 居中
|
||||
combinedContext.drawImage(tempCanvas, x, currentY);
|
||||
|
||||
// 更新Y坐标
|
||||
currentY += viewport.height;
|
||||
|
||||
// 渲染下一页
|
||||
renderNextPage(index + 1);
|
||||
});
|
||||
});
|
||||
};
|
||||
|
||||
// 开始渲染第一页
|
||||
renderNextPage(0);
|
||||
}
|
||||
|
||||
// 导出多张图片
|
||||
function exportMultipleImages(scale) {
|
||||
const zip = new JSZip();
|
||||
const folder = zip.folder("images");
|
||||
let processedCount = 0;
|
||||
|
||||
// 更新加载文本
|
||||
document.getElementById('loading-text').textContent = `正在导出图片 (0/${renderedPages.length})`;
|
||||
|
||||
// 处理每一页
|
||||
renderedPages.forEach((page, index) => {
|
||||
// 获取原始页面
|
||||
pdfDocument.getPage(page.pageNumber).then(pdfPage => {
|
||||
const viewport = pdfPage.getViewport({ scale });
|
||||
|
||||
// 创建canvas
|
||||
const canvas = document.createElement('canvas');
|
||||
canvas.width = viewport.width;
|
||||
canvas.height = viewport.height;
|
||||
const context = canvas.getContext('2d');
|
||||
|
||||
// 填充白色背景
|
||||
context.fillStyle = '#FFFFFF';
|
||||
context.fillRect(0, 0, canvas.width, canvas.height);
|
||||
|
||||
// 渲染PDF页面到canvas
|
||||
const renderContext = {
|
||||
canvasContext: context,
|
||||
viewport: viewport
|
||||
};
|
||||
|
||||
pdfPage.render(renderContext).promise.then(() => {
|
||||
// 将canvas转换为blob
|
||||
canvas.toBlob(blob => {
|
||||
// 添加到zip
|
||||
folder.file(`page_${page.pageNumber}.png`, blob);
|
||||
|
||||
processedCount++;
|
||||
document.getElementById('loading-text').textContent = `正在导出图片 (${processedCount}/${renderedPages.length})`;
|
||||
|
||||
// 如果所有页面都已处理，生成并下载zip
|
||||
if (processedCount === renderedPages.length) {
|
||||
// 生成并下载zip文件
|
||||
zip.generateAsync({ type: 'blob' }).then(content => {
|
||||
saveAs(content, `${pdfFile.name.replace('.pdf', '')}_images.zip`);
|
||||
loadingContainer.style.display = 'none';
|
||||
});
|
||||
}
|
||||
}, 'image/png');
|
||||
});
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
// 辅助函数
|
||||
function formatFileSize(bytes) {
|
||||
if (bytes < 1024) return bytes + ' B';
|
||||
else if (bytes < 1048576) return (bytes / 1024).toFixed(2) + ' KB';
|
||||
else return (bytes / 1048576).toFixed(2) + ' MB';
|
||||
}
|
||||
|
||||
function showError(message) {
|
||||
alert(message);
|
||||
}
|
||||
|
||||
function resetUI() {
|
||||
uploadArea.style.display = 'block';
|
||||
loadingContainer.style.display = 'none';
|
||||
pdfInfoContainer.style.display = 'none';
|
||||
previewContainer.style.display = 'none';
|
||||
pdfFileInput.value = '';
|
||||
// 导入依赖库
|
||||
import * as pdfjsLib from './pdf.mjs';
|
||||
import JSZip from './jszip.min.js';
|
||||
import * as docx from './docx.esm.js';
|
||||
|
||||
// 设置PDF.js worker路径
|
||||
pdfjsLib.GlobalWorkerOptions.workerSrc = 'cssjs/js/pdf.worker.mjs';
|
||||
|
||||
// 全局变量
|
||||
let pdfDocument = null;
|
||||
let pdfFile = null;
|
||||
let renderedPages = [];
|
||||
|
||||
// DOM元素
|
||||
const uploadArea = document.getElementById('upload-area');
|
||||
const pdfFileInput = document.getElementById('pdf-file-input');
|
||||
const selectFileBtn = document.getElementById('select-file-btn');
|
||||
const loadingContainer = document.getElementById('loading-container');
|
||||
const pdfInfoContainer = document.getElementById('pdf-info-container');
|
||||
const previewContainer = document.getElementById('preview-container');
|
||||
const previewItems = document.getElementById('preview-items');
|
||||
const exportBtn = document.getElementById('export-btn');
|
||||
const combinePagesSwitch = document.getElementById('combine-pages-switch');
|
||||
const highQualitySwitch = document.getElementById('high-quality-switch');
|
||||
const preserveLayoutSwitch = document.getElementById('preserve-layout-switch');
|
||||
const exportImageRadio = document.getElementById('export-image');
|
||||
const exportWordRadio = document.getElementById('export-word');
|
||||
const imageOptions = document.getElementById('image-options');
|
||||
const wordOptions = document.getElementById('word-options');
|
||||
|
||||
// PDF信息显示元素
|
||||
const pdfNameValue = document.getElementById('pdf-name-value');
|
||||
const pdfSizeValue = document.getElementById('pdf-size-value');
|
||||
const pdfPagesValue = document.getElementById('pdf-pages-value');
|
||||
|
||||
// 事件监听器
|
||||
document.addEventListener('DOMContentLoaded', function() {
|
||||
// 初始化事件监听
|
||||
initEventListeners();
|
||||
});
|
||||
|
||||
// 初始化事件监听器
|
||||
function initEventListeners() {
|
||||
selectFileBtn.addEventListener('click', () => pdfFileInput.click());
|
||||
pdfFileInput.addEventListener('change', handleFileSelect);
|
||||
exportBtn.addEventListener('click', handleExport);
|
||||
|
||||
// 导出类型切换
|
||||
exportImageRadio.addEventListener('change', updateExportOptions);
|
||||
exportWordRadio.addEventListener('change', updateExportOptions);
|
||||
|
||||
// 拖放功能
|
||||
uploadArea.addEventListener('dragover', (e) => {
|
||||
e.preventDefault();
|
||||
uploadArea.classList.add('dragover');
|
||||
});
|
||||
|
||||
uploadArea.addEventListener('dragleave', () => {
|
||||
uploadArea.classList.remove('dragover');
|
||||
});
|
||||
|
||||
uploadArea.addEventListener('drop', (e) => {
|
||||
e.preventDefault();
|
||||
uploadArea.classList.remove('dragover');
|
||||
|
||||
if (e.dataTransfer.files.length > 0) {
|
||||
const file = e.dataTransfer.files[0];
|
||||
if (file.type === 'application/pdf') {
|
||||
pdfFileInput.files = e.dataTransfer.files;
|
||||
handleFileSelect(e);
|
||||
} else {
|
||||
showError('请选择PDF文件');
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
// 更新导出选项显示
|
||||
function updateExportOptions() {
|
||||
if (exportImageRadio.checked) {
|
||||
imageOptions.style.display = 'block';
|
||||
wordOptions.style.display = 'none';
|
||||
} else {
|
||||
imageOptions.style.display = 'none';
|
||||
wordOptions.style.display = 'block';
|
||||
}
|
||||
}
|
||||
|
||||
// 处理导出按钮点击
|
||||
function handleExport() {
|
||||
if (!pdfDocument || renderedPages.length === 0) {
|
||||
showError('没有可导出的内容');
|
||||
return;
|
||||
}
|
||||
|
||||
if (exportImageRadio.checked) {
|
||||
exportImages();
|
||||
} else {
|
||||
exportWord();
|
||||
}
|
||||
}
|
||||
|
||||
// 处理文件选择
|
||||
function handleFileSelect(e) {
|
||||
const file = pdfFileInput.files[0];
|
||||
|
||||
if (!file) return;
|
||||
|
||||
if (file.type !== 'application/pdf') {
|
||||
showError('请选择PDF文件');
|
||||
return;
|
||||
}
|
||||
|
||||
if (file.size > 20 * 1024 * 1024) { // 20MB
|
||||
showError('文件大小不能超过20MB');
|
||||
return;
|
||||
}
|
||||
|
||||
pdfFile = file;
|
||||
|
||||
// 显示加载状态
|
||||
uploadArea.style.display = 'none';
|
||||
loadingContainer.style.display = 'block';
|
||||
previewContainer.style.display = 'none';
|
||||
pdfInfoContainer.style.display = 'none';
|
||||
previewItems.innerHTML = '';
|
||||
renderedPages = [];
|
||||
|
||||
// 读取PDF文件
|
||||
const reader = new FileReader();
|
||||
reader.onload = function(event) {
|
||||
const typedArray = new Uint8Array(event.target.result);
|
||||
loadPdfFromData(typedArray);
|
||||
};
|
||||
reader.readAsArrayBuffer(file);
|
||||
}
|
||||
|
||||
// 从ArrayBuffer加载PDF
|
||||
function loadPdfFromData(data) {
|
||||
pdfjsLib.getDocument({ data }).promise
|
||||
.then(pdf => {
|
||||
pdfDocument = pdf;
|
||||
|
||||
// 更新PDF信息
|
||||
pdfNameValue.textContent = pdfFile.name;
|
||||
pdfSizeValue.textContent = formatFileSize(pdfFile.size);
|
||||
pdfPagesValue.textContent = pdf.numPages;
|
||||
|
||||
// 渲染预览
|
||||
renderPdfPreview(pdf);
|
||||
})
|
||||
.catch(error => {
|
||||
console.error('PDF加载错误:', error);
|
||||
showError('无法加载PDF文件，请确保文件未损坏');
|
||||
resetUI();
|
||||
});
|
||||
}
|
||||
|
||||
// 渲染PDF预览
|
||||
function renderPdfPreview(pdf) {
|
||||
const totalPages = pdf.numPages;
|
||||
let renderedCount = 0;
|
||||
|
||||
// 更新加载文本
|
||||
document.getElementById('loading-text').textContent = `正在渲染预览 (0/${totalPages})`;
|
||||
|
||||
// 为每一页创建预览
|
||||
for (let pageNumber = 1; pageNumber <= totalPages; pageNumber++) {
|
||||
pdf.getPage(pageNumber).then(page => {
|
||||
const scale = 0.5; // 预览缩放比例
|
||||
const viewport = page.getViewport({ scale });
|
||||
|
||||
// 创建canvas元素
|
||||
const canvas = document.createElement('canvas');
|
||||
const context = canvas.getContext('2d');
|
||||
canvas.width = viewport.width;
|
||||
canvas.height = viewport.height;
|
||||
|
||||
// 渲染PDF页面到canvas
|
||||
const renderContext = {
|
||||
canvasContext: context,
|
||||
viewport: viewport
|
||||
};
|
||||
|
||||
page.render(renderContext).promise.then(() => {
|
||||
renderedCount++;
|
||||
document.getElementById('loading-text').textContent = `正在渲染预览 (${renderedCount}/${totalPages})`;
|
||||
|
||||
// 存储渲染的页面
|
||||
renderedPages[pageNumber - 1] = {
|
||||
pageNumber: pageNumber,
|
||||
canvas: canvas,
|
||||
width: viewport.width,
|
||||
height: viewport.height
|
||||
};
|
||||
|
||||
// 如果所有页面都已渲染，显示预览
|
||||
if (renderedCount === totalPages) {
|
||||
displayPreviews();
|
||||
}
|
||||
});
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
// 显示预览
|
||||
function displayPreviews() {
|
||||
// 按页码排序
|
||||
renderedPages.sort((a, b) => a.pageNumber - b.pageNumber);
|
||||
|
||||
// 清空预览容器
|
||||
previewItems.innerHTML = '';
|
||||
|
||||
// 添加每一页的预览
|
||||
renderedPages.forEach(page => {
|
||||
const colDiv = document.createElement('div');
|
||||
colDiv.className = 'col-md-6 col-lg-4 preview-item';
|
||||
|
||||
const pageNumberDiv = document.createElement('div');
|
||||
pageNumberDiv.className = 'page-number';
|
||||
pageNumberDiv.textContent = `第 ${page.pageNumber} 页`;
|
||||
|
||||
// 克隆canvas以避免原始canvas被修改
|
||||
const displayCanvas = document.createElement('canvas');
|
||||
displayCanvas.width = page.canvas.width;
|
||||
displayCanvas.height = page.canvas.height;
|
||||
const displayContext = displayCanvas.getContext('2d');
|
||||
displayContext.drawImage(page.canvas, 0, 0);
|
||||
|
||||
colDiv.appendChild(displayCanvas);
|
||||
colDiv.appendChild(pageNumberDiv);
|
||||
previewItems.appendChild(colDiv);
|
||||
});
|
||||
|
||||
// 显示预览和控制面板
|
||||
loadingContainer.style.display = 'none';
|
||||
pdfInfoContainer.style.display = 'block';
|
||||
previewContainer.style.display = 'block';
|
||||
}
|
||||
|
||||
// 导出图片
|
||||
function exportImages() {
|
||||
|
||||
const combinePages = combinePagesSwitch.checked;
|
||||
const highQuality = highQualitySwitch.checked;
|
||||
const scale = highQuality ? 2.0 : 1.0;
|
||||
|
||||
// 显示加载状态
|
||||
loadingContainer.style.display = 'block';
|
||||
document.getElementById('loading-text').textContent = '正在准备导出...';
|
||||
|
||||
if (combinePages) {
|
||||
// 合并为单张图片
|
||||
exportCombinedImage(scale);
|
||||
} else {
|
||||
// 导出为多张图片
|
||||
exportMultipleImages(scale);
|
||||
}
|
||||
}
|
||||
|
||||
// 导出合并的单张图片
|
||||
function exportCombinedImage(scale) {
|
||||
// 计算合并后的图片尺寸
|
||||
let totalHeight = 0;
|
||||
let maxWidth = 0;
|
||||
|
||||
renderedPages.forEach(page => {
|
||||
totalHeight += page.height * (scale / 0.5);
|
||||
maxWidth = Math.max(maxWidth, page.width * (scale / 0.5));
|
||||
});
|
||||
|
||||
// 创建合并的canvas
|
||||
const combinedCanvas = document.createElement('canvas');
|
||||
combinedCanvas.width = maxWidth;
|
||||
combinedCanvas.height = totalHeight;
|
||||
const combinedContext = combinedCanvas.getContext('2d');
|
||||
|
||||
// 填充白色背景
|
||||
combinedContext.fillStyle = '#FFFFFF';
|
||||
combinedContext.fillRect(0, 0, combinedCanvas.width, combinedCanvas.height);
|
||||
|
||||
// 重新渲染每一页到合并的canvas
|
||||
let currentY = 0;
|
||||
let renderedCount = 0;
|
||||
|
||||
const renderNextPage = (index) => {
|
||||
if (index >= renderedPages.length) {
|
||||
// 所有页面都已渲染，导出图片
|
||||
combinedCanvas.toBlob(blob => {
|
||||
saveAs(blob, `${pdfFile.name.replace('.pdf', '')}_combined.png`);
|
||||
loadingContainer.style.display = 'none';
|
||||
}, 'image/png');
|
||||
return;
|
||||
}
|
||||
|
||||
const page = renderedPages[index];
|
||||
|
||||
// 更新加载文本
|
||||
document.getElementById('loading-text').textContent = `正在合并页面 (${index + 1}/${renderedPages.length})`;
|
||||
|
||||
// 获取原始页面
|
||||
pdfDocument.getPage(page.pageNumber).then(pdfPage => {
|
||||
const viewport = pdfPage.getViewport({ scale });
|
||||
|
||||
// 创建临时canvas
|
||||
const tempCanvas = document.createElement('canvas');
|
||||
tempCanvas.width = viewport.width;
|
||||
tempCanvas.height = viewport.height;
|
||||
const tempContext = tempCanvas.getContext('2d');
|
||||
|
||||
// 渲染到临时canvas
|
||||
const renderContext = {
|
||||
canvasContext: tempContext,
|
||||
viewport: viewport
|
||||
};
|
||||
|
||||
pdfPage.render(renderContext).promise.then(() => {
|
||||
// 将临时canvas的内容绘制到合并的canvas
|
||||
const x = (maxWidth - viewport.width) / 2; // 居中
|
||||
combinedContext.drawImage(tempCanvas, x, currentY);
|
||||
|
||||
// 更新Y坐标
|
||||
currentY += viewport.height;
|
||||
|
||||
// 渲染下一页
|
||||
renderNextPage(index + 1);
|
||||
});
|
||||
});
|
||||
};
|
||||
|
||||
// 开始渲染第一页
|
||||
renderNextPage(0);
|
||||
}
|
||||
|
||||
// 导出多张图片
|
||||
function exportMultipleImages(scale) {
|
||||
const zip = new JSZip();
|
||||
const folder = zip.folder("images");
|
||||
let processedCount = 0;
|
||||
|
||||
// 更新加载文本
|
||||
document.getElementById('loading-text').textContent = `正在导出图片 (0/${renderedPages.length})`;
|
||||
|
||||
// 处理每一页
|
||||
renderedPages.forEach((page, index) => {
|
||||
// 获取原始页面
|
||||
pdfDocument.getPage(page.pageNumber).then(pdfPage => {
|
||||
const viewport = pdfPage.getViewport({ scale });
|
||||
|
||||
// 创建canvas
|
||||
const canvas = document.createElement('canvas');
|
||||
canvas.width = viewport.width;
|
||||
canvas.height = viewport.height;
|
||||
const context = canvas.getContext('2d');
|
||||
|
||||
// 填充白色背景
|
||||
context.fillStyle = '#FFFFFF';
|
||||
context.fillRect(0, 0, canvas.width, canvas.height);
|
||||
|
||||
// 渲染PDF页面到canvas
|
||||
const renderContext = {
|
||||
canvasContext: context,
|
||||
viewport: viewport
|
||||
};
|
||||
|
||||
pdfPage.render(renderContext).promise.then(() => {
|
||||
// 将canvas转换为blob
|
||||
canvas.toBlob(blob => {
|
||||
// 添加到zip
|
||||
folder.file(`page_${page.pageNumber}.png`, blob);
|
||||
|
||||
processedCount++;
|
||||
document.getElementById('loading-text').textContent = `正在导出图片 (${processedCount}/${renderedPages.length})`;
|
||||
|
||||
// 如果所有页面都已处理，生成并下载zip
|
||||
if (processedCount === renderedPages.length) {
|
||||
// 生成并下载zip文件
|
||||
zip.generateAsync({ type: 'blob' }).then(content => {
|
||||
saveAs(content, `${pdfFile.name.replace('.pdf', '')}_images.zip`);
|
||||
loadingContainer.style.display = 'none';
|
||||
});
|
||||
}
|
||||
}, 'image/png');
|
||||
});
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
// 辅助函数
|
||||
function formatFileSize(bytes) {
|
||||
if (bytes < 1024) return bytes + ' B';
|
||||
else if (bytes < 1048576) return (bytes / 1024).toFixed(2) + ' KB';
|
||||
else return (bytes / 1048576).toFixed(2) + ' MB';
|
||||
}
|
||||
|
||||
function showError(message) {
|
||||
alert(message);
|
||||
}
|
||||
|
||||
function resetUI() {
|
||||
uploadArea.style.display = 'block';
|
||||
loadingContainer.style.display = 'none';
|
||||
pdfInfoContainer.style.display = 'none';
|
||||
previewContainer.style.display = 'none';
|
||||
pdfFileInput.value = '';
|
||||
}
|
||||
|
||||
// 导出为Word文档
|
||||
async function exportWord() {
|
||||
// 显示加载状态
|
||||
loadingContainer.style.display = 'block';
|
||||
document.getElementById('loading-text').textContent = '正在准备导出Word文档...';
|
||||
|
||||
try {
|
||||
// 等待 docx 组件加载完成
|
||||
const Document = await docx.Document;
|
||||
const Paragraph = await docx.Paragraph;
|
||||
const ImageRun = await docx.ImageRun;
|
||||
const HeadingLevel = await docx.HeadingLevel;
|
||||
const AlignmentType = await docx.AlignmentType;
|
||||
const Packer = await docx.Packer;
|
||||
|
||||
// 创建一个新的Word文档
|
||||
const doc = new Document({
|
||||
sections: [{
|
||||
properties: {},
|
||||
children: []
|
||||
}]
|
||||
});
|
||||
|
||||
const preserveLayout = preserveLayoutSwitch.checked;
|
||||
let processedCount = 0;
|
||||
|
||||
// 处理每一页
|
||||
for (let i = 0; i < renderedPages.length; i++) {
|
||||
const page = renderedPages[i];
|
||||
document.getElementById('loading-text').textContent = `正在处理第 ${i + 1}/${renderedPages.length} 页`;
|
||||
|
||||
// 获取页面文本内容
|
||||
const textContent = await pdfDocument.getPage(page.pageNumber).then(pdfPage => {
|
||||
return pdfPage.getTextContent();
|
||||
});
|
||||
|
||||
// 如果保留布局，添加页面图像
|
||||
if (preserveLayout) {
|
||||
// 获取页面图像
|
||||
const pdfPage = await pdfDocument.getPage(page.pageNumber);
|
||||
const viewport = pdfPage.getViewport({ scale: 1.5 });
|
||||
|
||||
// 创建canvas
|
||||
const canvas = document.createElement('canvas');
|
||||
canvas.width = viewport.width;
|
||||
canvas.height = viewport.height;
|
||||
const context = canvas.getContext('2d');
|
||||
|
||||
// 填充白色背景
|
||||
context.fillStyle = '#FFFFFF';
|
||||
context.fillRect(0, 0, canvas.width, canvas.height);
|
||||
|
||||
// 渲染PDF页面到canvas
|
||||
const renderContext = {
|
||||
canvasContext: context,
|
||||
viewport: viewport
|
||||
};
|
||||
|
||||
await pdfPage.render(renderContext).promise;
|
||||
|
||||
// 将canvas转换为图像数据
|
||||
const imageData = canvas.toDataURL('image/png');
|
||||
const imageBase64 = imageData.split(',')[1];
|
||||
|
||||
// 将base64转换为Uint8Array
|
||||
const binaryString = atob(imageBase64);
|
||||
const bytes = new Uint8Array(binaryString.length);
|
||||
for (let j = 0; j < binaryString.length; j++) {
|
||||
bytes[j] = binaryString.charCodeAt(j);
|
||||
}
|
||||
|
||||
// 确保数据是Buffer类型
|
||||
const imageBuffer = Buffer.from(bytes);
|
||||
|
||||
// 添加图像到Word文档
|
||||
doc.addSection({
|
||||
properties: {},
|
||||
children: [
|
||||
new Paragraph({
|
||||
children: [
|
||||
new ImageRun({
|
||||
data: imageBuffer,
|
||||
transformation: {
|
||||
width: 600,
|
||||
height: 600 * (viewport.height / viewport.width)
|
||||
}
|
||||
})
|
||||
]
|
||||
}),
|
||||
new Paragraph({
|
||||
text: `第 ${page.pageNumber} 页`,
|
||||
alignment: AlignmentType.CENTER
|
||||
})
|
||||
]
|
||||
});
|
||||
} else {
|
||||
// 仅提取文本内容
|
||||
let pageText = '';
|
||||
let lastY = -1;
|
||||
|
||||
// 处理文本项
|
||||
textContent.items.forEach(item => {
|
||||
// 如果Y坐标变化，添加换行
|
||||
if (lastY !== -1 && lastY !== item.transform[5]) {
|
||||
pageText += '\n';
|
||||
}
|
||||
|
||||
pageText += item.str;
|
||||
lastY = item.transform[5];
|
||||
});
|
||||
|
||||
// 添加文本到Word文档
|
||||
doc.addSection({
|
||||
properties: {},
|
||||
children: [
|
||||
new Paragraph({
|
||||
text: `第 ${page.pageNumber} 页`,
|
||||
heading: HeadingLevel.HEADING_1,
|
||||
alignment: AlignmentType.CENTER
|
||||
}),
|
||||
new Paragraph({
|
||||
text: pageText
|
||||
})
|
||||
]
|
||||
});
|
||||
}
|
||||
|
||||
processedCount++;
|
||||
}
|
||||
|
||||
// 生成Word文档
|
||||
document.getElementById('loading-text').textContent = '正在生成Word文档...';
|
||||
const buffer = await Packer.toBlob(doc);
|
||||
|
||||
// 保存文件
|
||||
saveAs(buffer, `${pdfFile.name.replace('.pdf', '')}.docx`);
|
||||
|
||||
// 隐藏加载状态
|
||||
loadingContainer.style.display = 'none';
|
||||
} catch (error) {
|
||||
console.error('Word导出错误:', error);
|
||||
showError('导出Word文档时出错');
|
||||
loadingContainer.style.display = 'none';
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user