Add PDF thumbnail sidebar to EnvelopeViewer
Introduced a PDF thumbnail sidebar in `EnvelopeViewer.razor` to enhance navigation between pages. Added a toggle button to show/hide the sidebar and implemented dynamic thumbnail rendering for all pages. Updated `envelope-viewer.css` with styles for the sidebar, including hover/active states, transitions, and mobile responsiveness. Enhanced `pdf-viewer.js` with a `renderThumbnail` method to render page previews on canvas elements. Added error handling for non-critical thumbnail rendering issues. Improved user experience by providing an intuitive way to preview and navigate PDF pages.
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@@ -59,6 +59,159 @@
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justify-content: flex-start;
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padding: 0;
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gap: 1rem;
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position: relative;
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}
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.pdf-thumbnails {
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position: absolute;
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left: -280px;
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top: 0;
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bottom: 0;
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width: 260px;
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background: rgba(255, 255, 255, 0.98);
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backdrop-filter: blur(20px);
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border-radius: 16px;
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box-shadow:
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0 8px 32px rgba(0, 0, 0, 0.12),
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0 0 0 1px rgba(126, 34, 206, 0.1);
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border: 1px solid rgba(126, 34, 206, 0.15);
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transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
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z-index: 100;
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display: flex;
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flex-direction: column;
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overflow: hidden;
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}
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.pdf-thumbnails--visible {
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left: 0;
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}
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.pdf-thumbnails__header {
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display: flex;
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align-items: center;
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justify-content: space-between;
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padding: 1rem 1.25rem;
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border-bottom: 2px solid rgba(126, 34, 206, 0.1);
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flex-shrink: 0;
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}
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.pdf-thumbnails__title {
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font-size: 0.875rem;
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font-weight: 700;
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color: #1e293b;
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letter-spacing: 0.025em;
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text-transform: uppercase;
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}
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.pdf-thumbnails__close {
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background: transparent;
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border: none;
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cursor: pointer;
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padding: 0.375rem;
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border-radius: 6px;
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color: #64748b;
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transition: all 0.2s ease;
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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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.pdf-thumbnails__close:hover {
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background: rgba(126, 34, 206, 0.1);
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color: #7e22ce;
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}
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.pdf-thumbnails__content {
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flex: 1;
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overflow-y: auto;
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overflow-x: hidden;
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padding: 1rem;
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display: flex;
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flex-direction: column;
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gap: 0.75rem;
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}
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.pdf-thumbnails__content::-webkit-scrollbar {
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width: 6px;
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}
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.pdf-thumbnails__content::-webkit-scrollbar-track {
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background: rgba(0, 0, 0, 0.05);
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border-radius: 3px;
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}
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.pdf-thumbnails__content::-webkit-scrollbar-thumb {
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background: linear-gradient(135deg, #7e22ce 0%, #2a5298 100%);
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border-radius: 3px;
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}
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.pdf-thumbnails__content::-webkit-scrollbar-thumb:hover {
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background: linear-gradient(135deg, #6b1cb0 0%, #1e3a72 100%);
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}
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.pdf-thumbnail {
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cursor: pointer;
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border-radius: 8px;
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overflow: hidden;
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background: white;
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border: 2px solid transparent;
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transition: all 0.2s ease;
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box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
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}
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.pdf-thumbnail:hover {
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border-color: rgba(126, 34, 206, 0.3);
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box-shadow: 0 4px 16px rgba(126, 34, 206, 0.2);
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transform: translateY(-2px);
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}
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.pdf-thumbnail--active {
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border-color: #7e22ce;
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box-shadow:
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0 4px 16px rgba(126, 34, 206, 0.3),
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0 0 0 3px rgba(126, 34, 206, 0.1);
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}
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.pdf-thumbnail__preview {
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width: 100%;
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aspect-ratio: 210 / 297;
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background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
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display: flex;
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align-items: center;
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justify-content: center;
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overflow: hidden;
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}
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.pdf-thumbnail__canvas {
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max-width: 100%;
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max-height: 100%;
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display: block;
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}
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.pdf-thumbnail__label {
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padding: 0.5rem;
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text-align: center;
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font-size: 0.75rem;
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font-weight: 600;
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color: #64748b;
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background: rgba(126, 34, 206, 0.03);
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border-top: 1px solid rgba(126, 34, 206, 0.1);
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}
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.pdf-thumbnail--active .pdf-thumbnail__label {
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background: linear-gradient(135deg, rgba(126, 34, 206, 0.1) 0%, rgba(42, 82, 152, 0.1) 100%);
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color: #7e22ce;
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font-weight: 700;
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}
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.pdf-toolbar__btn--toggle {
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background: linear-gradient(135deg, rgba(126, 34, 206, 0.08) 0%, rgba(42, 82, 152, 0.08) 100%);
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border-color: rgba(126, 34, 206, 0.25);
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}
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.pdf-toolbar__btn--toggle:hover:not(:disabled) {
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background: linear-gradient(135deg, rgba(126, 34, 206, 0.15) 0%, rgba(42, 82, 152, 0.15) 100%);
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border-color: rgba(126, 34, 206, 0.5);
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}
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.pdf-toolbar {
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@@ -307,6 +460,17 @@
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padding: 0.75rem;
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}
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.pdf-thumbnails {
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width: 200px;
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left: -220px;
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border-radius: 0 16px 16px 0;
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}
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.pdf-thumbnails__content {
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padding: 0.75rem;
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gap: 0.5rem;
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}
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.pdf-toolbar {
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flex-wrap: wrap;
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padding: 0.625rem 1rem;
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@@ -233,6 +233,31 @@ window.pdfViewer = {
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}
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},
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async renderThumbnail(pageNum, canvasId) {
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if (!this.pdfDoc) return;
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try {
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const canvas = document.getElementById(canvasId);
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if (!canvas) return;
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const page = await this.pdfDoc.getPage(pageNum);
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const viewport = page.getViewport({ scale: 0.2 });
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canvas.height = viewport.height;
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canvas.width = viewport.width;
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const ctx = canvas.getContext('2d');
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const renderContext = {
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canvasContext: ctx,
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viewport: viewport
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};
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await page.render(renderContext).promise;
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} catch (error) {
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// Thumbnail rendering errors are non-critical
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}
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},
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getCurrentPage() {
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return this.pageNum;
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},
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