feat: Add PDF viewer and preview components with styling and functionality
- Implemented DeesPdfViewer for full-featured PDF viewing with toolbar and sidebar navigation. - Created DeesPdfPreview for lightweight PDF previews. - Introduced PdfManager for managing PDF document loading and caching. - Added CanvasPool for efficient canvas management. - Developed utility functions for performance monitoring and file size formatting. - Established styles for viewer and preview components to enhance UI/UX. - Included demo examples for showcasing PDF viewer capabilities.
This commit is contained in:
290
ts_web/elements/dees-pdf-preview/component.ts
Normal file
290
ts_web/elements/dees-pdf-preview/component.ts
Normal file
@@ -0,0 +1,290 @@
|
||||
import { DeesElement, property, html, customElement, domtools, type TemplateResult, css, cssManager } from '@design.estate/dees-element';
|
||||
import { PdfManager } from '../dees-pdf-shared/PdfManager.js';
|
||||
import { CanvasPool, type PooledCanvas } from '../dees-pdf-shared/CanvasPool.js';
|
||||
import { PerformanceMonitor, throttle } from '../dees-pdf-shared/utils.js';
|
||||
import { previewStyles } from './styles.js';
|
||||
import { demo as demoFunc } from './demo.js';
|
||||
|
||||
declare global {
|
||||
interface HTMLElementTagNameMap {
|
||||
'dees-pdf-preview': DeesPdfPreview;
|
||||
}
|
||||
}
|
||||
|
||||
@customElement('dees-pdf-preview')
|
||||
export class DeesPdfPreview extends DeesElement {
|
||||
public static demo = demoFunc;
|
||||
public static styles = previewStyles;
|
||||
|
||||
@property({ type: String })
|
||||
public pdfUrl: string = '';
|
||||
|
||||
@property({ type: Number })
|
||||
public maxPages: number = 3;
|
||||
|
||||
@property({ type: Number })
|
||||
public stackOffset: number = 8;
|
||||
|
||||
@property({ type: Boolean })
|
||||
public clickable: boolean = true;
|
||||
|
||||
@property({ type: Number })
|
||||
private pageCount: number = 0;
|
||||
|
||||
@property({ type: Boolean })
|
||||
private loading: boolean = false;
|
||||
|
||||
@property({ type: Boolean })
|
||||
private rendered: boolean = false;
|
||||
|
||||
@property({ type: Boolean })
|
||||
private error: boolean = false;
|
||||
|
||||
private observer: IntersectionObserver;
|
||||
private pdfDocument: any;
|
||||
private canvases: PooledCanvas[] = [];
|
||||
private renderRequestId: number;
|
||||
|
||||
constructor() {
|
||||
super();
|
||||
}
|
||||
|
||||
public render(): TemplateResult {
|
||||
return html`
|
||||
<div
|
||||
class="preview-container ${this.loading ? 'loading' : ''} ${this.error ? 'error' : ''} ${this.clickable ? 'clickable' : ''}"
|
||||
@click=${this.handleClick}
|
||||
>
|
||||
${this.loading ? html`
|
||||
<div class="preview-loading">
|
||||
<div class="preview-spinner"></div>
|
||||
<div class="preview-text">Loading preview...</div>
|
||||
</div>
|
||||
` : ''}
|
||||
|
||||
${this.error ? html`
|
||||
<div class="preview-error">
|
||||
<dees-icon icon="lucide:FileX"></dees-icon>
|
||||
<div class="preview-text">Failed to load PDF</div>
|
||||
</div>
|
||||
` : ''}
|
||||
|
||||
${!this.loading && !this.error ? html`
|
||||
<div class="preview-stack">
|
||||
${this.getStackedCanvases()}
|
||||
</div>
|
||||
|
||||
${this.pageCount > 0 ? html`
|
||||
<div class="preview-info">
|
||||
<dees-icon icon="lucide:FileText"></dees-icon>
|
||||
<span class="preview-pages">${this.pageCount} page${this.pageCount > 1 ? 's' : ''}</span>
|
||||
</div>
|
||||
` : ''}
|
||||
|
||||
${this.clickable ? html`
|
||||
<div class="preview-overlay">
|
||||
<dees-icon icon="lucide:Eye"></dees-icon>
|
||||
<span>View PDF</span>
|
||||
</div>
|
||||
` : ''}
|
||||
` : ''}
|
||||
</div>
|
||||
`;
|
||||
}
|
||||
|
||||
private getStackedCanvases(): TemplateResult[] {
|
||||
const pagesToShow = Math.min(this.pageCount, this.maxPages);
|
||||
const canvases: TemplateResult[] = [];
|
||||
|
||||
for (let i = pagesToShow - 1; i >= 0; i--) {
|
||||
const offset = i * this.stackOffset;
|
||||
canvases.push(html`
|
||||
<canvas
|
||||
class="preview-canvas"
|
||||
data-page="${i + 1}"
|
||||
style="
|
||||
top: ${offset}px;
|
||||
left: ${offset}px;
|
||||
z-index: ${pagesToShow - i};
|
||||
${i > 0 ? `box-shadow: 0 2px 8px rgba(0, 0, 0, ${0.1 + (i * 0.05)});` : ''}
|
||||
"
|
||||
></canvas>
|
||||
`);
|
||||
}
|
||||
|
||||
return canvases;
|
||||
}
|
||||
|
||||
public async connectedCallback() {
|
||||
super.connectedCallback();
|
||||
this.setupIntersectionObserver();
|
||||
}
|
||||
|
||||
public async disconnectedCallback() {
|
||||
super.disconnectedCallback();
|
||||
this.cleanup();
|
||||
}
|
||||
|
||||
private setupIntersectionObserver() {
|
||||
const options = {
|
||||
root: null,
|
||||
rootMargin: '200px',
|
||||
threshold: 0.01,
|
||||
};
|
||||
|
||||
this.observer = new IntersectionObserver(
|
||||
throttle((entries) => {
|
||||
for (const entry of entries) {
|
||||
if (entry.isIntersecting && !this.rendered && this.pdfUrl) {
|
||||
this.loadAndRenderPreview();
|
||||
} else if (!entry.isIntersecting && this.rendered) {
|
||||
// Optional: Clear canvases when out of view for memory optimization
|
||||
// this.clearCanvases();
|
||||
}
|
||||
}
|
||||
}, 100),
|
||||
options
|
||||
);
|
||||
|
||||
this.observer.observe(this);
|
||||
}
|
||||
|
||||
private async loadAndRenderPreview() {
|
||||
if (this.rendered || this.loading) return;
|
||||
|
||||
this.loading = true;
|
||||
this.error = false;
|
||||
PerformanceMonitor.mark(`preview-load-${this.pdfUrl}`);
|
||||
|
||||
try {
|
||||
this.pdfDocument = await PdfManager.loadDocument(this.pdfUrl);
|
||||
this.pageCount = this.pdfDocument.numPages;
|
||||
|
||||
await this.updateComplete;
|
||||
await this.renderPages();
|
||||
|
||||
this.rendered = true;
|
||||
|
||||
const duration = PerformanceMonitor.measure(`preview-render-${this.pdfUrl}`, `preview-load-${this.pdfUrl}`);
|
||||
console.log(`PDF preview rendered in ${duration}ms`);
|
||||
} catch (error) {
|
||||
console.error('Failed to load PDF preview:', error);
|
||||
this.error = true;
|
||||
} finally {
|
||||
this.loading = false;
|
||||
}
|
||||
}
|
||||
|
||||
private async renderPages() {
|
||||
const canvasElements = this.shadowRoot?.querySelectorAll('.preview-canvas') as NodeListOf<HTMLCanvasElement>;
|
||||
const pagesToRender = Math.min(this.pageCount, this.maxPages);
|
||||
|
||||
// Release old canvases
|
||||
this.clearCanvases();
|
||||
|
||||
// Calculate available width for preview (container width minus padding and stacking offset)
|
||||
const containerWidth = 160; // 200px container - 40px padding
|
||||
const maxStackOffset = (pagesToRender - 1) * this.stackOffset;
|
||||
const availableWidth = containerWidth - maxStackOffset;
|
||||
|
||||
// Render pages in reverse order (back to front for stacking)
|
||||
for (let i = 0; i < pagesToRender; i++) {
|
||||
const canvas = canvasElements[i];
|
||||
if (!canvas) continue;
|
||||
|
||||
const pageNum = parseInt(canvas.dataset.page || '1');
|
||||
const page = await this.pdfDocument.getPage(pageNum);
|
||||
|
||||
// Calculate scale to fit within available width
|
||||
const initialViewport = page.getViewport({ scale: 1 });
|
||||
const scale = Math.min(availableWidth / initialViewport.width, 0.5); // Cap at 0.5 for quality
|
||||
const viewport = page.getViewport({ scale });
|
||||
|
||||
// Acquire canvas from pool
|
||||
const pooledCanvas = CanvasPool.acquire(viewport.width, viewport.height);
|
||||
this.canvases.push(pooledCanvas);
|
||||
|
||||
// Render to pooled canvas first
|
||||
const renderContext = {
|
||||
canvasContext: pooledCanvas.ctx,
|
||||
viewport: viewport,
|
||||
};
|
||||
|
||||
await page.render(renderContext).promise;
|
||||
|
||||
// Transfer to display canvas
|
||||
canvas.width = viewport.width;
|
||||
canvas.height = viewport.height;
|
||||
canvas.style.width = `${viewport.width}px`;
|
||||
canvas.style.height = `${viewport.height}px`;
|
||||
|
||||
const ctx = canvas.getContext('2d');
|
||||
if (ctx) {
|
||||
ctx.drawImage(pooledCanvas.canvas, 0, 0);
|
||||
}
|
||||
|
||||
// Release page to free memory
|
||||
page.cleanup();
|
||||
}
|
||||
}
|
||||
|
||||
private clearCanvases() {
|
||||
// Cancel any pending render
|
||||
if (this.renderRequestId) {
|
||||
cancelAnimationFrame(this.renderRequestId);
|
||||
this.renderRequestId = 0;
|
||||
}
|
||||
|
||||
// Release pooled canvases
|
||||
for (const pooledCanvas of this.canvases) {
|
||||
CanvasPool.release(pooledCanvas);
|
||||
}
|
||||
this.canvases = [];
|
||||
}
|
||||
|
||||
private cleanup() {
|
||||
if (this.observer) {
|
||||
this.observer.disconnect();
|
||||
}
|
||||
|
||||
this.clearCanvases();
|
||||
|
||||
if (this.pdfUrl && this.pdfDocument) {
|
||||
PdfManager.releaseDocument(this.pdfUrl);
|
||||
this.pdfDocument = null;
|
||||
}
|
||||
|
||||
this.rendered = false;
|
||||
}
|
||||
|
||||
private handleClick() {
|
||||
if (!this.clickable) return;
|
||||
|
||||
// Dispatch custom event for parent to handle
|
||||
this.dispatchEvent(new CustomEvent('pdf-preview-click', {
|
||||
detail: {
|
||||
pdfUrl: this.pdfUrl,
|
||||
pageCount: this.pageCount,
|
||||
},
|
||||
bubbles: true,
|
||||
composed: true,
|
||||
}));
|
||||
}
|
||||
|
||||
public async updated(changedProperties: Map<PropertyKey, unknown>) {
|
||||
super.updated(changedProperties);
|
||||
|
||||
if (changedProperties.has('pdfUrl') && this.pdfUrl) {
|
||||
this.cleanup();
|
||||
this.rendered = false;
|
||||
|
||||
// Check if in viewport and render if so
|
||||
if (this.observer) {
|
||||
const rect = this.getBoundingClientRect();
|
||||
if (rect.top < window.innerHeight && rect.bottom > 0) {
|
||||
this.loadAndRenderPreview();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
189
ts_web/elements/dees-pdf-preview/demo.ts
Normal file
189
ts_web/elements/dees-pdf-preview/demo.ts
Normal file
@@ -0,0 +1,189 @@
|
||||
import { html } from '@design.estate/dees-element';
|
||||
|
||||
export const demo = () => {
|
||||
const samplePdfs = [
|
||||
'https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/examples/learning/helloworld.pdf',
|
||||
'https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/web/compressed.tracemonkey-pldi-09.pdf',
|
||||
];
|
||||
|
||||
const generateGridItems = (count: number) => {
|
||||
const items = [];
|
||||
for (let i = 0; i < count; i++) {
|
||||
const pdfUrl = samplePdfs[i % samplePdfs.length];
|
||||
items.push(html`
|
||||
<dees-pdf-preview
|
||||
pdfUrl="${pdfUrl}"
|
||||
maxPages="3"
|
||||
stackOffset="6"
|
||||
clickable="true"
|
||||
grid-mode
|
||||
@pdf-preview-click=${(e: CustomEvent) => {
|
||||
console.log('PDF Preview clicked:', e.detail);
|
||||
alert(`PDF clicked: ${e.detail.pageCount} pages`);
|
||||
}}
|
||||
></dees-pdf-preview>
|
||||
`);
|
||||
}
|
||||
return items;
|
||||
};
|
||||
|
||||
return html`
|
||||
<style>
|
||||
.demo-container {
|
||||
padding: 40px;
|
||||
background: #f5f5f5;
|
||||
}
|
||||
|
||||
.demo-section {
|
||||
margin-bottom: 60px;
|
||||
}
|
||||
|
||||
h3 {
|
||||
margin-bottom: 20px;
|
||||
font-size: 18px;
|
||||
font-weight: 600;
|
||||
}
|
||||
|
||||
.preview-grid {
|
||||
display: grid;
|
||||
grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
|
||||
gap: 24px;
|
||||
}
|
||||
|
||||
.preview-row {
|
||||
display: flex;
|
||||
gap: 24px;
|
||||
align-items: center;
|
||||
margin-bottom: 20px;
|
||||
}
|
||||
|
||||
.preview-label {
|
||||
font-size: 14px;
|
||||
font-weight: 500;
|
||||
min-width: 100px;
|
||||
}
|
||||
|
||||
.performance-stats {
|
||||
margin-top: 20px;
|
||||
padding: 16px;
|
||||
background: white;
|
||||
border-radius: 8px;
|
||||
font-size: 14px;
|
||||
}
|
||||
|
||||
.stats-grid {
|
||||
display: grid;
|
||||
grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
|
||||
gap: 12px;
|
||||
margin-top: 12px;
|
||||
}
|
||||
|
||||
.stat-item {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 4px;
|
||||
}
|
||||
|
||||
.stat-label {
|
||||
font-size: 12px;
|
||||
color: #666;
|
||||
}
|
||||
|
||||
.stat-value {
|
||||
font-size: 16px;
|
||||
font-weight: 600;
|
||||
}
|
||||
</style>
|
||||
|
||||
<div class="demo-container">
|
||||
<div class="demo-section">
|
||||
<h3>Single PDF Preview with Stacked Pages</h3>
|
||||
<dees-pdf-preview
|
||||
pdfUrl="https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/web/compressed.tracemonkey-pldi-09.pdf"
|
||||
maxPages="3"
|
||||
stackOffset="8"
|
||||
clickable="true"
|
||||
></dees-pdf-preview>
|
||||
</div>
|
||||
|
||||
<div class="demo-section">
|
||||
<h3>Different Sizes</h3>
|
||||
<div class="preview-row">
|
||||
<div class="preview-label">Small:</div>
|
||||
<dees-pdf-preview
|
||||
size="small"
|
||||
pdfUrl="https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/examples/learning/helloworld.pdf"
|
||||
maxPages="2"
|
||||
stackOffset="6"
|
||||
clickable="true"
|
||||
></dees-pdf-preview>
|
||||
</div>
|
||||
|
||||
<div class="preview-row">
|
||||
<div class="preview-label">Default:</div>
|
||||
<dees-pdf-preview
|
||||
pdfUrl="https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/examples/learning/helloworld.pdf"
|
||||
maxPages="3"
|
||||
stackOffset="8"
|
||||
clickable="true"
|
||||
></dees-pdf-preview>
|
||||
</div>
|
||||
|
||||
<div class="preview-row">
|
||||
<div class="preview-label">Large:</div>
|
||||
<dees-pdf-preview
|
||||
size="large"
|
||||
pdfUrl="https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/examples/learning/helloworld.pdf"
|
||||
maxPages="4"
|
||||
stackOffset="10"
|
||||
clickable="true"
|
||||
></dees-pdf-preview>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="demo-section">
|
||||
<h3>Non-Clickable Preview</h3>
|
||||
<dees-pdf-preview
|
||||
pdfUrl="https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/examples/learning/helloworld.pdf"
|
||||
maxPages="3"
|
||||
stackOffset="8"
|
||||
clickable="false"
|
||||
></dees-pdf-preview>
|
||||
</div>
|
||||
|
||||
<div class="demo-section">
|
||||
<h3>Performance Grid - 50 PDFs with Lazy Loading</h3>
|
||||
<p style="margin-bottom: 20px; font-size: 14px; color: #666;">
|
||||
This grid demonstrates the performance optimizations with 50 PDF previews.
|
||||
Scroll to see lazy loading in action - previews render only when visible.
|
||||
</p>
|
||||
|
||||
<div class="preview-grid">
|
||||
${generateGridItems(50)}
|
||||
</div>
|
||||
|
||||
<div class="performance-stats">
|
||||
<h4>Performance Features</h4>
|
||||
<div class="stats-grid">
|
||||
<div class="stat-item">
|
||||
<span class="stat-label">Lazy Loading</span>
|
||||
<span class="stat-value">✓ Enabled</span>
|
||||
</div>
|
||||
<div class="stat-item">
|
||||
<span class="stat-label">Canvas Pooling</span>
|
||||
<span class="stat-value">✓ Active</span>
|
||||
</div>
|
||||
<div class="stat-item">
|
||||
<span class="stat-label">Memory Management</span>
|
||||
<span class="stat-value">✓ Optimized</span>
|
||||
</div>
|
||||
<div class="stat-item">
|
||||
<span class="stat-label">Intersection Observer</span>
|
||||
<span class="stat-value">200px margin</span>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
`;
|
||||
};
|
||||
1
ts_web/elements/dees-pdf-preview/index.ts
Normal file
1
ts_web/elements/dees-pdf-preview/index.ts
Normal file
@@ -0,0 +1 @@
|
||||
export * from './component.js';
|
||||
177
ts_web/elements/dees-pdf-preview/styles.ts
Normal file
177
ts_web/elements/dees-pdf-preview/styles.ts
Normal file
@@ -0,0 +1,177 @@
|
||||
import { css, cssManager } from '@design.estate/dees-element';
|
||||
|
||||
export const previewStyles = [
|
||||
cssManager.defaultStyles,
|
||||
css`
|
||||
:host {
|
||||
display: inline-block;
|
||||
position: relative;
|
||||
}
|
||||
|
||||
.preview-container {
|
||||
position: relative;
|
||||
width: 200px;
|
||||
height: 260px;
|
||||
background: ${cssManager.bdTheme('hsl(0 0% 100%)', 'hsl(215 20% 16%)')};
|
||||
border: 1px solid ${cssManager.bdTheme('hsl(214 31% 91%)', 'hsl(217 25% 26%)')};
|
||||
border-radius: 12px;
|
||||
overflow: hidden;
|
||||
transition: transform 0.2s ease, box-shadow 0.2s ease;
|
||||
}
|
||||
|
||||
.preview-container.clickable {
|
||||
cursor: pointer;
|
||||
}
|
||||
|
||||
.preview-container.clickable:hover {
|
||||
transform: translateY(-2px);
|
||||
box-shadow: 0 8px 24px ${cssManager.bdTheme('rgba(0, 0, 0, 0.12)', 'rgba(0, 0, 0, 0.3)')};
|
||||
}
|
||||
|
||||
.preview-container.clickable:hover .preview-overlay {
|
||||
opacity: 1;
|
||||
}
|
||||
|
||||
.preview-stack {
|
||||
position: relative;
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
padding: 20px;
|
||||
box-sizing: border-box;
|
||||
}
|
||||
|
||||
.preview-canvas {
|
||||
position: absolute;
|
||||
background: white;
|
||||
border: 1px solid ${cssManager.bdTheme('hsl(214 31% 88%)', 'hsl(217 25% 30%)')};
|
||||
border-radius: 4px;
|
||||
display: block;
|
||||
image-rendering: -webkit-optimize-contrast;
|
||||
image-rendering: crisp-edges;
|
||||
}
|
||||
|
||||
.preview-info {
|
||||
position: absolute;
|
||||
bottom: 12px;
|
||||
left: 12px;
|
||||
right: 12px;
|
||||
padding: 8px 12px;
|
||||
background: ${cssManager.bdTheme('hsl(0 0% 100% / 0.95)', 'hsl(215 20% 12% / 0.95)')};
|
||||
border: 1px solid ${cssManager.bdTheme('hsl(214 31% 91%)', 'hsl(217 25% 26%)')};
|
||||
border-radius: 8px;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
gap: 8px;
|
||||
font-size: 13px;
|
||||
color: ${cssManager.bdTheme('hsl(215 16% 45%)', 'hsl(215 16% 75%)')};
|
||||
backdrop-filter: blur(8px);
|
||||
z-index: 10;
|
||||
}
|
||||
|
||||
.preview-info dees-icon {
|
||||
font-size: 14px;
|
||||
color: ${cssManager.bdTheme('hsl(217 91% 60%)', 'hsl(213 93% 68%)')};
|
||||
}
|
||||
|
||||
.preview-pages {
|
||||
font-weight: 500;
|
||||
}
|
||||
|
||||
.preview-overlay {
|
||||
position: absolute;
|
||||
top: 0;
|
||||
left: 0;
|
||||
right: 0;
|
||||
bottom: 0;
|
||||
background: ${cssManager.bdTheme('rgba(0, 0, 0, 0.7)', 'rgba(0, 0, 0, 0.8)')};
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
gap: 8px;
|
||||
opacity: 0;
|
||||
transition: opacity 0.2s ease;
|
||||
z-index: 20;
|
||||
}
|
||||
|
||||
.preview-overlay dees-icon {
|
||||
font-size: 24px;
|
||||
color: white;
|
||||
}
|
||||
|
||||
.preview-overlay span {
|
||||
font-size: 14px;
|
||||
font-weight: 500;
|
||||
color: white;
|
||||
}
|
||||
|
||||
.preview-loading,
|
||||
.preview-error {
|
||||
position: absolute;
|
||||
top: 0;
|
||||
left: 0;
|
||||
right: 0;
|
||||
bottom: 0;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
gap: 12px;
|
||||
color: ${cssManager.bdTheme('hsl(215 16% 45%)', 'hsl(215 16% 75%)')};
|
||||
}
|
||||
|
||||
.preview-loading {
|
||||
background: ${cssManager.bdTheme('hsl(0 0% 99%)', 'hsl(215 20% 14%)')};
|
||||
}
|
||||
|
||||
.preview-error {
|
||||
background: ${cssManager.bdTheme('hsl(0 72% 98%)', 'hsl(0 62% 20%)')};
|
||||
color: ${cssManager.bdTheme('hsl(0 72% 40%)', 'hsl(0 70% 68%)')};
|
||||
}
|
||||
|
||||
.preview-spinner {
|
||||
width: 24px;
|
||||
height: 24px;
|
||||
border-radius: 50%;
|
||||
border: 2px solid ${cssManager.bdTheme('hsl(214 31% 86%)', 'hsl(217 25% 28%)')};
|
||||
border-top-color: ${cssManager.bdTheme('hsl(217 91% 60%)', 'hsl(213 93% 68%)')};
|
||||
animation: spin 0.8s linear infinite;
|
||||
}
|
||||
|
||||
@keyframes spin {
|
||||
to {
|
||||
transform: rotate(360deg);
|
||||
}
|
||||
}
|
||||
|
||||
.preview-text {
|
||||
font-size: 13px;
|
||||
font-weight: 500;
|
||||
}
|
||||
|
||||
.preview-error dees-icon {
|
||||
font-size: 32px;
|
||||
}
|
||||
|
||||
/* Responsive sizes */
|
||||
:host([size="small"]) .preview-container {
|
||||
width: 150px;
|
||||
height: 195px;
|
||||
}
|
||||
|
||||
:host([size="large"]) .preview-container {
|
||||
width: 250px;
|
||||
height: 325px;
|
||||
}
|
||||
|
||||
/* Grid optimizations */
|
||||
:host([grid-mode]) .preview-container {
|
||||
will-change: auto;
|
||||
}
|
||||
|
||||
:host([grid-mode]) .preview-canvas {
|
||||
image-rendering: -webkit-optimize-contrast;
|
||||
image-rendering: crisp-edges;
|
||||
}
|
||||
`,
|
||||
];
|
||||
135
ts_web/elements/dees-pdf-shared/CanvasPool.ts
Normal file
135
ts_web/elements/dees-pdf-shared/CanvasPool.ts
Normal file
@@ -0,0 +1,135 @@
|
||||
export interface PooledCanvas {
|
||||
canvas: HTMLCanvasElement;
|
||||
ctx: CanvasRenderingContext2D;
|
||||
inUse: boolean;
|
||||
lastUsed: number;
|
||||
}
|
||||
|
||||
export class CanvasPool {
|
||||
private static pool: PooledCanvas[] = [];
|
||||
private static maxPoolSize = 20;
|
||||
private static readonly MIN_CANVAS_SIZE = 256;
|
||||
private static readonly MAX_CANVAS_SIZE = 4096;
|
||||
|
||||
public static acquire(width: number, height: number): PooledCanvas {
|
||||
// Try to find a suitable canvas from the pool
|
||||
const suitable = this.pool.find(
|
||||
(item) => !item.inUse &&
|
||||
item.canvas.width >= width &&
|
||||
item.canvas.height >= height &&
|
||||
item.canvas.width <= width * 1.5 &&
|
||||
item.canvas.height <= height * 1.5
|
||||
);
|
||||
|
||||
if (suitable) {
|
||||
suitable.inUse = true;
|
||||
suitable.lastUsed = Date.now();
|
||||
|
||||
// Clear and resize if needed
|
||||
suitable.canvas.width = width;
|
||||
suitable.canvas.height = height;
|
||||
suitable.ctx.clearRect(0, 0, width, height);
|
||||
|
||||
return suitable;
|
||||
}
|
||||
|
||||
// Create new canvas if pool not full
|
||||
if (this.pool.length < this.maxPoolSize) {
|
||||
const canvas = document.createElement('canvas');
|
||||
const ctx = canvas.getContext('2d', {
|
||||
alpha: true,
|
||||
desynchronized: true,
|
||||
}) as CanvasRenderingContext2D;
|
||||
|
||||
canvas.width = Math.min(Math.max(width, this.MIN_CANVAS_SIZE), this.MAX_CANVAS_SIZE);
|
||||
canvas.height = Math.min(Math.max(height, this.MIN_CANVAS_SIZE), this.MAX_CANVAS_SIZE);
|
||||
|
||||
const pooledCanvas: PooledCanvas = {
|
||||
canvas,
|
||||
ctx,
|
||||
inUse: true,
|
||||
lastUsed: Date.now(),
|
||||
};
|
||||
|
||||
this.pool.push(pooledCanvas);
|
||||
return pooledCanvas;
|
||||
}
|
||||
|
||||
// Evict and reuse least recently used canvas
|
||||
const lru = this.pool
|
||||
.filter((item) => !item.inUse)
|
||||
.sort((a, b) => a.lastUsed - b.lastUsed)[0];
|
||||
|
||||
if (lru) {
|
||||
lru.canvas.width = width;
|
||||
lru.canvas.height = height;
|
||||
lru.ctx.clearRect(0, 0, width, height);
|
||||
lru.inUse = true;
|
||||
lru.lastUsed = Date.now();
|
||||
return lru;
|
||||
}
|
||||
|
||||
// Fallback: create temporary canvas (shouldn't normally happen)
|
||||
const canvas = document.createElement('canvas');
|
||||
const ctx = canvas.getContext('2d') as CanvasRenderingContext2D;
|
||||
canvas.width = width;
|
||||
canvas.height = height;
|
||||
|
||||
return {
|
||||
canvas,
|
||||
ctx,
|
||||
inUse: true,
|
||||
lastUsed: Date.now(),
|
||||
};
|
||||
}
|
||||
|
||||
public static release(pooledCanvas: PooledCanvas) {
|
||||
if (this.pool.includes(pooledCanvas)) {
|
||||
pooledCanvas.inUse = false;
|
||||
// Clear canvas to free memory
|
||||
pooledCanvas.ctx.clearRect(0, 0, pooledCanvas.canvas.width, pooledCanvas.canvas.height);
|
||||
}
|
||||
}
|
||||
|
||||
public static releaseAll() {
|
||||
for (const item of this.pool) {
|
||||
item.inUse = false;
|
||||
item.ctx.clearRect(0, 0, item.canvas.width, item.canvas.height);
|
||||
}
|
||||
}
|
||||
|
||||
public static destroy() {
|
||||
for (const item of this.pool) {
|
||||
item.canvas.width = 0;
|
||||
item.canvas.height = 0;
|
||||
}
|
||||
this.pool = [];
|
||||
}
|
||||
|
||||
public static getStats() {
|
||||
return {
|
||||
poolSize: this.pool.length,
|
||||
maxPoolSize: this.maxPoolSize,
|
||||
inUse: this.pool.filter((item) => item.inUse).length,
|
||||
available: this.pool.filter((item) => !item.inUse).length,
|
||||
};
|
||||
}
|
||||
|
||||
public static adjustPoolSize(newSize: number) {
|
||||
if (newSize < this.pool.length) {
|
||||
// Remove excess canvases
|
||||
const toRemove = this.pool.length - newSize;
|
||||
const removed = this.pool
|
||||
.filter((item) => !item.inUse)
|
||||
.slice(0, toRemove);
|
||||
|
||||
for (const item of removed) {
|
||||
const index = this.pool.indexOf(item);
|
||||
if (index > -1) {
|
||||
this.pool.splice(index, 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
this.maxPoolSize = newSize;
|
||||
}
|
||||
}
|
||||
108
ts_web/elements/dees-pdf-shared/PdfManager.ts
Normal file
108
ts_web/elements/dees-pdf-shared/PdfManager.ts
Normal file
@@ -0,0 +1,108 @@
|
||||
import { domtools } from '@design.estate/dees-element';
|
||||
|
||||
interface CachedDocument {
|
||||
url: string;
|
||||
document: any;
|
||||
lastAccessed: number;
|
||||
refCount: number;
|
||||
}
|
||||
|
||||
export class PdfManager {
|
||||
private static cache = new Map<string, CachedDocument>();
|
||||
private static maxCacheSize = 10;
|
||||
private static pdfjsLib: any;
|
||||
private static initialized = false;
|
||||
|
||||
public static async initialize() {
|
||||
if (this.initialized) return;
|
||||
|
||||
// @ts-ignore
|
||||
this.pdfjsLib = await import('https://cdn.jsdelivr.net/npm/pdfjs-dist@4.0.379/+esm');
|
||||
this.pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdn.jsdelivr.net/npm/pdfjs-dist@4.0.379/build/pdf.worker.mjs';
|
||||
|
||||
this.initialized = true;
|
||||
}
|
||||
|
||||
public static async loadDocument(url: string): Promise<any> {
|
||||
await this.initialize();
|
||||
|
||||
// Check cache first
|
||||
const cached = this.cache.get(url);
|
||||
if (cached) {
|
||||
cached.lastAccessed = Date.now();
|
||||
cached.refCount++;
|
||||
return cached.document;
|
||||
}
|
||||
|
||||
// Load new document
|
||||
const loadingTask = this.pdfjsLib.getDocument(url);
|
||||
const document = await loadingTask.promise;
|
||||
|
||||
// Add to cache with LRU eviction if needed
|
||||
if (this.cache.size >= this.maxCacheSize) {
|
||||
this.evictLeastRecentlyUsed();
|
||||
}
|
||||
|
||||
this.cache.set(url, {
|
||||
url,
|
||||
document,
|
||||
lastAccessed: Date.now(),
|
||||
refCount: 1,
|
||||
});
|
||||
|
||||
return document;
|
||||
}
|
||||
|
||||
public static releaseDocument(url: string) {
|
||||
const cached = this.cache.get(url);
|
||||
if (cached) {
|
||||
cached.refCount--;
|
||||
if (cached.refCount <= 0) {
|
||||
// Don't immediately remove, keep for potential reuse
|
||||
cached.refCount = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static evictLeastRecentlyUsed() {
|
||||
let oldestTime = Infinity;
|
||||
let oldestKey: string | null = null;
|
||||
|
||||
for (const [key, value] of this.cache.entries()) {
|
||||
// Only evict if not currently in use
|
||||
if (value.refCount === 0 && value.lastAccessed < oldestTime) {
|
||||
oldestTime = value.lastAccessed;
|
||||
oldestKey = key;
|
||||
}
|
||||
}
|
||||
|
||||
if (oldestKey) {
|
||||
const cached = this.cache.get(oldestKey);
|
||||
if (cached?.document) {
|
||||
cached.document.destroy?.();
|
||||
}
|
||||
this.cache.delete(oldestKey);
|
||||
}
|
||||
}
|
||||
|
||||
public static clearCache() {
|
||||
for (const cached of this.cache.values()) {
|
||||
if (cached.document) {
|
||||
cached.document.destroy?.();
|
||||
}
|
||||
}
|
||||
this.cache.clear();
|
||||
}
|
||||
|
||||
public static getCacheStats() {
|
||||
return {
|
||||
size: this.cache.size,
|
||||
maxSize: this.maxCacheSize,
|
||||
entries: Array.from(this.cache.entries()).map(([url, data]) => ({
|
||||
url,
|
||||
refCount: data.refCount,
|
||||
lastAccessed: new Date(data.lastAccessed).toISOString(),
|
||||
})),
|
||||
};
|
||||
}
|
||||
}
|
||||
98
ts_web/elements/dees-pdf-shared/utils.ts
Normal file
98
ts_web/elements/dees-pdf-shared/utils.ts
Normal file
@@ -0,0 +1,98 @@
|
||||
export function debounce<T extends (...args: any[]) => any>(
|
||||
func: T,
|
||||
wait: number
|
||||
): (...args: Parameters<T>) => void {
|
||||
let timeout: number | undefined;
|
||||
|
||||
return function executedFunction(...args: Parameters<T>) {
|
||||
const later = () => {
|
||||
clearTimeout(timeout);
|
||||
func(...args);
|
||||
};
|
||||
|
||||
clearTimeout(timeout);
|
||||
timeout = window.setTimeout(later, wait);
|
||||
};
|
||||
}
|
||||
|
||||
export function throttle<T extends (...args: any[]) => any>(
|
||||
func: T,
|
||||
limit: number
|
||||
): (...args: Parameters<T>) => void {
|
||||
let inThrottle: boolean;
|
||||
|
||||
return function executedFunction(...args: Parameters<T>) {
|
||||
if (!inThrottle) {
|
||||
func.apply(this, args);
|
||||
inThrottle = true;
|
||||
setTimeout(() => inThrottle = false, limit);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
export function formatFileSize(bytes: number): string {
|
||||
if (bytes === 0) return '0 Bytes';
|
||||
|
||||
const k = 1024;
|
||||
const sizes = ['Bytes', 'KB', 'MB', 'GB'];
|
||||
const i = Math.floor(Math.log(bytes) / Math.log(k));
|
||||
|
||||
return Math.round(bytes / Math.pow(k, i) * 100) / 100 + ' ' + sizes[i];
|
||||
}
|
||||
|
||||
export function isInViewport(element: Element, margin = 0): boolean {
|
||||
const rect = element.getBoundingClientRect();
|
||||
return (
|
||||
rect.top >= -margin &&
|
||||
rect.left >= -margin &&
|
||||
rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) + margin &&
|
||||
rect.right <= (window.innerWidth || document.documentElement.clientWidth) + margin
|
||||
);
|
||||
}
|
||||
|
||||
export class PerformanceMonitor {
|
||||
private static marks = new Map<string, number>();
|
||||
private static measures: Array<{ name: string; duration: number }> = [];
|
||||
|
||||
public static mark(name: string) {
|
||||
this.marks.set(name, performance.now());
|
||||
}
|
||||
|
||||
public static measure(name: string, startMark: string) {
|
||||
const start = this.marks.get(startMark);
|
||||
if (start) {
|
||||
const duration = performance.now() - start;
|
||||
this.measures.push({ name, duration });
|
||||
this.marks.delete(startMark);
|
||||
return duration;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
public static getReport() {
|
||||
const report = {
|
||||
measures: [...this.measures],
|
||||
averages: {} as Record<string, number>,
|
||||
};
|
||||
|
||||
// Calculate averages for repeated measures
|
||||
const grouped = new Map<string, number[]>();
|
||||
for (const measure of this.measures) {
|
||||
if (!grouped.has(measure.name)) {
|
||||
grouped.set(measure.name, []);
|
||||
}
|
||||
grouped.get(measure.name)!.push(measure.duration);
|
||||
}
|
||||
|
||||
for (const [name, durations] of grouped) {
|
||||
report.averages[name] = durations.reduce((a, b) => a + b, 0) / durations.length;
|
||||
}
|
||||
|
||||
return report;
|
||||
}
|
||||
|
||||
public static clear() {
|
||||
this.marks.clear();
|
||||
this.measures = [];
|
||||
}
|
||||
}
|
||||
386
ts_web/elements/dees-pdf-viewer/component.ts
Normal file
386
ts_web/elements/dees-pdf-viewer/component.ts
Normal file
@@ -0,0 +1,386 @@
|
||||
import { DeesElement, property, html, customElement, domtools, type TemplateResult, type CSSResult, css, cssManager } from '@design.estate/dees-element';
|
||||
import { DeesInputBase } from '../dees-input-base.js';
|
||||
import { PdfManager } from '../dees-pdf-shared/PdfManager.js';
|
||||
import { viewerStyles } from './styles.js';
|
||||
import { demo as demoFunc } from './demo.js';
|
||||
|
||||
declare global {
|
||||
interface HTMLElementTagNameMap {
|
||||
'dees-pdf-viewer': DeesPdfViewer;
|
||||
}
|
||||
}
|
||||
|
||||
@customElement('dees-pdf-viewer')
|
||||
export class DeesPdfViewer extends DeesElement {
|
||||
public static demo = demoFunc;
|
||||
public static styles = viewerStyles;
|
||||
|
||||
@property({ type: String })
|
||||
public pdfUrl: string = '';
|
||||
|
||||
@property({ type: Number })
|
||||
public initialPage: number = 1;
|
||||
|
||||
@property({ type: String })
|
||||
public initialZoom: 'auto' | 'page-fit' | 'page-width' | number = 'auto';
|
||||
|
||||
@property({ type: Boolean })
|
||||
public showToolbar: boolean = true;
|
||||
|
||||
@property({ type: Boolean })
|
||||
public showSidebar: boolean = false;
|
||||
|
||||
@property({ type: Number })
|
||||
private currentPage: number = 1;
|
||||
|
||||
@property({ type: Number })
|
||||
private totalPages: number = 1;
|
||||
|
||||
@property({ type: Number })
|
||||
private currentZoom: number = 1;
|
||||
|
||||
@property({ type: Boolean })
|
||||
private loading: boolean = false;
|
||||
|
||||
private pdfDocument: any;
|
||||
private pageRendering: boolean = false;
|
||||
private pageNumPending: number | null = null;
|
||||
private canvas: HTMLCanvasElement;
|
||||
private ctx: CanvasRenderingContext2D;
|
||||
|
||||
constructor() {
|
||||
super();
|
||||
}
|
||||
|
||||
public render(): TemplateResult {
|
||||
return html`
|
||||
<div class="pdf-viewer ${this.showSidebar ? 'with-sidebar' : ''}">
|
||||
${this.showToolbar ? html`
|
||||
<div class="toolbar">
|
||||
<div class="toolbar-group">
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.previousPage}
|
||||
?disabled=${this.currentPage <= 1}
|
||||
>
|
||||
<dees-icon icon="lucide:ChevronLeft"></dees-icon>
|
||||
</button>
|
||||
<div class="page-info">
|
||||
<input
|
||||
type="number"
|
||||
min="1"
|
||||
max="${this.totalPages}"
|
||||
.value=${this.currentPage}
|
||||
@change=${this.handlePageInput}
|
||||
class="page-input"
|
||||
/>
|
||||
<span class="page-separator">/</span>
|
||||
<span class="page-total">${this.totalPages}</span>
|
||||
</div>
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.nextPage}
|
||||
?disabled=${this.currentPage >= this.totalPages}
|
||||
>
|
||||
<dees-icon icon="lucide:ChevronRight"></dees-icon>
|
||||
</button>
|
||||
</div>
|
||||
|
||||
<div class="toolbar-group">
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.zoomOut}
|
||||
?disabled=${this.currentZoom <= 0.5}
|
||||
>
|
||||
<dees-icon icon="lucide:ZoomOut"></dees-icon>
|
||||
</button>
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.resetZoom}
|
||||
>
|
||||
<span class="zoom-level">${Math.round(this.currentZoom * 100)}%</span>
|
||||
</button>
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.zoomIn}
|
||||
?disabled=${this.currentZoom >= 3}
|
||||
>
|
||||
<dees-icon icon="lucide:ZoomIn"></dees-icon>
|
||||
</button>
|
||||
</div>
|
||||
|
||||
<div class="toolbar-group">
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.fitToPage}
|
||||
title="Fit to page"
|
||||
>
|
||||
<dees-icon icon="lucide:Maximize"></dees-icon>
|
||||
</button>
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.fitToWidth}
|
||||
title="Fit to width"
|
||||
>
|
||||
<dees-icon icon="lucide:ArrowLeftRight"></dees-icon>
|
||||
</button>
|
||||
</div>
|
||||
|
||||
<div class="toolbar-group toolbar-group--end">
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.downloadPdf}
|
||||
title="Download"
|
||||
>
|
||||
<dees-icon icon="lucide:Download"></dees-icon>
|
||||
</button>
|
||||
<button
|
||||
class="toolbar-button"
|
||||
@click=${this.printPdf}
|
||||
title="Print"
|
||||
>
|
||||
<dees-icon icon="lucide:Printer"></dees-icon>
|
||||
</button>
|
||||
</div>
|
||||
</div>
|
||||
` : ''}
|
||||
|
||||
<div class="viewer-container">
|
||||
${this.showSidebar ? html`
|
||||
<div class="sidebar">
|
||||
<div class="sidebar-header">
|
||||
<span>Pages</span>
|
||||
<button
|
||||
class="sidebar-close"
|
||||
@click=${() => this.showSidebar = false}
|
||||
>
|
||||
<dees-icon icon="lucide:X"></dees-icon>
|
||||
</button>
|
||||
</div>
|
||||
<div class="sidebar-content">
|
||||
${Array(this.totalPages).fill(0).map((_, i) => html`
|
||||
<div
|
||||
class="thumbnail ${this.currentPage === i + 1 ? 'active' : ''}"
|
||||
@click=${() => this.goToPage(i + 1)}
|
||||
>
|
||||
<canvas class="thumbnail-canvas" data-page="${i + 1}"></canvas>
|
||||
<span class="thumbnail-number">${i + 1}</span>
|
||||
</div>
|
||||
`)}
|
||||
</div>
|
||||
</div>
|
||||
` : ''}
|
||||
|
||||
<div class="viewer-main">
|
||||
${this.loading ? html`
|
||||
<div class="loading-container">
|
||||
<div class="loading-spinner"></div>
|
||||
<div class="loading-text">Loading PDF...</div>
|
||||
</div>
|
||||
` : html`
|
||||
<div class="canvas-container">
|
||||
<canvas id="pdf-canvas"></canvas>
|
||||
</div>
|
||||
`}
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
`;
|
||||
}
|
||||
|
||||
public async connectedCallback() {
|
||||
super.connectedCallback();
|
||||
await this.updateComplete;
|
||||
if (this.pdfUrl) {
|
||||
await this.loadPdf();
|
||||
}
|
||||
}
|
||||
|
||||
public async updated(changedProperties: Map<PropertyKey, unknown>) {
|
||||
super.updated(changedProperties);
|
||||
|
||||
if (changedProperties.has('pdfUrl') && this.pdfUrl) {
|
||||
await this.loadPdf();
|
||||
}
|
||||
}
|
||||
|
||||
private async loadPdf() {
|
||||
this.loading = true;
|
||||
|
||||
try {
|
||||
this.pdfDocument = await PdfManager.loadDocument(this.pdfUrl);
|
||||
this.totalPages = this.pdfDocument.numPages;
|
||||
this.currentPage = this.initialPage;
|
||||
|
||||
await this.updateComplete;
|
||||
this.canvas = this.shadowRoot?.querySelector('#pdf-canvas') as HTMLCanvasElement;
|
||||
this.ctx = this.canvas?.getContext('2d') as CanvasRenderingContext2D;
|
||||
|
||||
await this.renderPage(this.currentPage);
|
||||
|
||||
if (this.showSidebar) {
|
||||
this.renderThumbnails();
|
||||
}
|
||||
} catch (error) {
|
||||
console.error('Error loading PDF:', error);
|
||||
} finally {
|
||||
this.loading = false;
|
||||
}
|
||||
}
|
||||
|
||||
private async renderPage(pageNum: number) {
|
||||
if (!this.pdfDocument || !this.canvas || !this.ctx) return;
|
||||
|
||||
this.pageRendering = true;
|
||||
|
||||
try {
|
||||
const page = await this.pdfDocument.getPage(pageNum);
|
||||
|
||||
let viewport;
|
||||
if (this.initialZoom === 'auto' || this.initialZoom === 'page-fit') {
|
||||
const tempViewport = page.getViewport({ scale: 1 });
|
||||
const containerWidth = this.canvas.parentElement?.clientWidth || 800;
|
||||
const containerHeight = this.canvas.parentElement?.clientHeight || 600;
|
||||
const scaleX = containerWidth / tempViewport.width;
|
||||
const scaleY = containerHeight / tempViewport.height;
|
||||
this.currentZoom = Math.min(scaleX, scaleY);
|
||||
viewport = page.getViewport({ scale: this.currentZoom });
|
||||
} else if (this.initialZoom === 'page-width') {
|
||||
const tempViewport = page.getViewport({ scale: 1 });
|
||||
const containerWidth = this.canvas.parentElement?.clientWidth || 800;
|
||||
this.currentZoom = containerWidth / tempViewport.width;
|
||||
viewport = page.getViewport({ scale: this.currentZoom });
|
||||
} else {
|
||||
this.currentZoom = typeof this.initialZoom === 'number' ? this.initialZoom : 1;
|
||||
viewport = page.getViewport({ scale: this.currentZoom });
|
||||
}
|
||||
|
||||
this.canvas.height = viewport.height;
|
||||
this.canvas.width = viewport.width;
|
||||
|
||||
const renderContext = {
|
||||
canvasContext: this.ctx,
|
||||
viewport: viewport,
|
||||
};
|
||||
|
||||
await page.render(renderContext).promise;
|
||||
|
||||
this.pageRendering = false;
|
||||
|
||||
if (this.pageNumPending !== null) {
|
||||
await this.renderPage(this.pageNumPending);
|
||||
this.pageNumPending = null;
|
||||
}
|
||||
} catch (error) {
|
||||
console.error('Error rendering page:', error);
|
||||
this.pageRendering = false;
|
||||
}
|
||||
}
|
||||
|
||||
private queueRenderPage(pageNum: number) {
|
||||
if (this.pageRendering) {
|
||||
this.pageNumPending = pageNum;
|
||||
} else {
|
||||
this.renderPage(pageNum);
|
||||
}
|
||||
}
|
||||
|
||||
private async renderThumbnails() {
|
||||
await this.updateComplete;
|
||||
const thumbnails = this.shadowRoot?.querySelectorAll('.thumbnail-canvas') as NodeListOf<HTMLCanvasElement>;
|
||||
const thumbnailWidth = 176; // Fixed width for thumbnails (200px container - 24px padding)
|
||||
|
||||
for (const canvas of Array.from(thumbnails)) {
|
||||
const pageNum = parseInt(canvas.dataset.page || '1');
|
||||
const page = await this.pdfDocument.getPage(pageNum);
|
||||
|
||||
// Calculate scale to fit thumbnail width while maintaining aspect ratio
|
||||
const initialViewport = page.getViewport({ scale: 1 });
|
||||
const scale = thumbnailWidth / initialViewport.width;
|
||||
const viewport = page.getViewport({ scale });
|
||||
|
||||
// Set canvas dimensions to actual render size
|
||||
canvas.width = viewport.width;
|
||||
canvas.height = viewport.height;
|
||||
|
||||
// Also set the display size via style to ensure proper display
|
||||
canvas.style.width = `${viewport.width}px`;
|
||||
canvas.style.height = `${viewport.height}px`;
|
||||
|
||||
const context = canvas.getContext('2d');
|
||||
const renderContext = {
|
||||
canvasContext: context,
|
||||
viewport: viewport,
|
||||
};
|
||||
|
||||
await page.render(renderContext).promise;
|
||||
}
|
||||
}
|
||||
|
||||
private previousPage() {
|
||||
if (this.currentPage > 1) {
|
||||
this.currentPage--;
|
||||
this.queueRenderPage(this.currentPage);
|
||||
}
|
||||
}
|
||||
|
||||
private nextPage() {
|
||||
if (this.currentPage < this.totalPages) {
|
||||
this.currentPage++;
|
||||
this.queueRenderPage(this.currentPage);
|
||||
}
|
||||
}
|
||||
|
||||
private goToPage(pageNum: number) {
|
||||
if (pageNum >= 1 && pageNum <= this.totalPages) {
|
||||
this.currentPage = pageNum;
|
||||
this.queueRenderPage(this.currentPage);
|
||||
}
|
||||
}
|
||||
|
||||
private handlePageInput(e: Event) {
|
||||
const input = e.target as HTMLInputElement;
|
||||
const pageNum = parseInt(input.value);
|
||||
this.goToPage(pageNum);
|
||||
}
|
||||
|
||||
private zoomIn() {
|
||||
if (this.currentZoom < 3) {
|
||||
this.currentZoom = Math.min(3, this.currentZoom * 1.2);
|
||||
this.queueRenderPage(this.currentPage);
|
||||
}
|
||||
}
|
||||
|
||||
private zoomOut() {
|
||||
if (this.currentZoom > 0.5) {
|
||||
this.currentZoom = Math.max(0.5, this.currentZoom / 1.2);
|
||||
this.queueRenderPage(this.currentPage);
|
||||
}
|
||||
}
|
||||
|
||||
private resetZoom() {
|
||||
this.currentZoom = 1;
|
||||
this.queueRenderPage(this.currentPage);
|
||||
}
|
||||
|
||||
private fitToPage() {
|
||||
this.initialZoom = 'page-fit';
|
||||
this.queueRenderPage(this.currentPage);
|
||||
}
|
||||
|
||||
private fitToWidth() {
|
||||
this.initialZoom = 'page-width';
|
||||
this.queueRenderPage(this.currentPage);
|
||||
}
|
||||
|
||||
private downloadPdf() {
|
||||
const link = document.createElement('a');
|
||||
link.href = this.pdfUrl;
|
||||
link.download = this.pdfUrl.split('/').pop() || 'document.pdf';
|
||||
link.click();
|
||||
}
|
||||
|
||||
private printPdf() {
|
||||
window.open(this.pdfUrl, '_blank')?.print();
|
||||
}
|
||||
}
|
||||
69
ts_web/elements/dees-pdf-viewer/demo.ts
Normal file
69
ts_web/elements/dees-pdf-viewer/demo.ts
Normal file
@@ -0,0 +1,69 @@
|
||||
import { html } from '@design.estate/dees-element';
|
||||
|
||||
export const demo = () => html`
|
||||
<style>
|
||||
.demo-container {
|
||||
padding: 40px;
|
||||
background: #f5f5f5;
|
||||
}
|
||||
|
||||
.demo-section {
|
||||
margin-bottom: 40px;
|
||||
}
|
||||
|
||||
h3 {
|
||||
margin-bottom: 20px;
|
||||
font-size: 18px;
|
||||
font-weight: 600;
|
||||
}
|
||||
|
||||
dees-pdf-viewer {
|
||||
border: 1px solid #ddd;
|
||||
border-radius: 8px;
|
||||
overflow: hidden;
|
||||
}
|
||||
|
||||
.viewer-tall {
|
||||
height: 800px;
|
||||
}
|
||||
|
||||
.viewer-compact {
|
||||
height: 500px;
|
||||
}
|
||||
</style>
|
||||
|
||||
<div class="demo-container">
|
||||
<div class="demo-section">
|
||||
<h3>Full Featured PDF Viewer with Toolbar</h3>
|
||||
<dees-pdf-viewer
|
||||
class="viewer-tall"
|
||||
pdfUrl="https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/web/compressed.tracemonkey-pldi-09.pdf"
|
||||
showToolbar="true"
|
||||
showSidebar="false"
|
||||
initialZoom="page-fit"
|
||||
></dees-pdf-viewer>
|
||||
</div>
|
||||
|
||||
<div class="demo-section">
|
||||
<h3>PDF Viewer with Sidebar Navigation</h3>
|
||||
<dees-pdf-viewer
|
||||
class="viewer-tall"
|
||||
pdfUrl="https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/web/compressed.tracemonkey-pldi-09.pdf"
|
||||
showToolbar="true"
|
||||
showSidebar="true"
|
||||
initialZoom="page-width"
|
||||
></dees-pdf-viewer>
|
||||
</div>
|
||||
|
||||
<div class="demo-section">
|
||||
<h3>Compact Viewer without Controls</h3>
|
||||
<dees-pdf-viewer
|
||||
class="viewer-compact"
|
||||
pdfUrl="https://raw.githubusercontent.com/mozilla/pdf.js/ba2edeae/examples/learning/helloworld.pdf"
|
||||
showToolbar="false"
|
||||
showSidebar="false"
|
||||
initialZoom="auto"
|
||||
></dees-pdf-viewer>
|
||||
</div>
|
||||
</div>
|
||||
`;
|
||||
1
ts_web/elements/dees-pdf-viewer/index.ts
Normal file
1
ts_web/elements/dees-pdf-viewer/index.ts
Normal file
@@ -0,0 +1 @@
|
||||
export * from './component.js';
|
||||
262
ts_web/elements/dees-pdf-viewer/styles.ts
Normal file
262
ts_web/elements/dees-pdf-viewer/styles.ts
Normal file
@@ -0,0 +1,262 @@
|
||||
import { css, cssManager } from '@design.estate/dees-element';
|
||||
|
||||
export const viewerStyles = [
|
||||
cssManager.defaultStyles,
|
||||
css`
|
||||
:host {
|
||||
display: block;
|
||||
width: 100%;
|
||||
height: 600px;
|
||||
position: relative;
|
||||
font-family: 'Geist Sans', sans-serif;
|
||||
}
|
||||
|
||||
.pdf-viewer {
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
background: ${cssManager.bdTheme('hsl(0 0% 97%)', 'hsl(215 20% 10%)')};
|
||||
}
|
||||
|
||||
.toolbar {
|
||||
height: 48px;
|
||||
background: ${cssManager.bdTheme('hsl(0 0% 100%)', 'hsl(215 20% 15%)')};
|
||||
border-bottom: 1px solid ${cssManager.bdTheme('hsl(214 31% 91%)', 'hsl(217 25% 22%)')};
|
||||
display: flex;
|
||||
align-items: center;
|
||||
padding: 0 16px;
|
||||
gap: 16px;
|
||||
flex-shrink: 0;
|
||||
}
|
||||
|
||||
.toolbar-group {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
gap: 4px;
|
||||
}
|
||||
|
||||
.toolbar-group--end {
|
||||
margin-left: auto;
|
||||
}
|
||||
|
||||
.toolbar-button {
|
||||
width: 32px;
|
||||
height: 32px;
|
||||
border-radius: 6px;
|
||||
background: transparent;
|
||||
border: none;
|
||||
cursor: pointer;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
transition: background 0.15s ease;
|
||||
color: ${cssManager.bdTheme('hsl(215 16% 45%)', 'hsl(215 16% 75%)')};
|
||||
}
|
||||
|
||||
.toolbar-button:hover:not(:disabled) {
|
||||
background: ${cssManager.bdTheme('hsl(214 31% 92%)', 'hsl(217 25% 22%)')};
|
||||
}
|
||||
|
||||
.toolbar-button:disabled {
|
||||
opacity: 0.4;
|
||||
cursor: not-allowed;
|
||||
}
|
||||
|
||||
.toolbar-button dees-icon {
|
||||
font-size: 16px;
|
||||
}
|
||||
|
||||
.page-info {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
gap: 8px;
|
||||
padding: 0 8px;
|
||||
font-size: 14px;
|
||||
color: ${cssManager.bdTheme('hsl(215 16% 45%)', 'hsl(215 16% 75%)')};
|
||||
}
|
||||
|
||||
.page-input {
|
||||
width: 48px;
|
||||
height: 28px;
|
||||
border-radius: 4px;
|
||||
border: 1px solid ${cssManager.bdTheme('hsl(214 31% 86%)', 'hsl(217 25% 28%)')};
|
||||
background: ${cssManager.bdTheme('hsl(0 0% 100%)', 'hsl(215 20% 12%)')};
|
||||
color: ${cssManager.bdTheme('hsl(222 47% 11%)', 'hsl(210 20% 96%)')};
|
||||
text-align: center;
|
||||
font-size: 14px;
|
||||
font-family: inherit;
|
||||
outline: none;
|
||||
}
|
||||
|
||||
.page-input:focus {
|
||||
border-color: ${cssManager.bdTheme('hsl(217 91% 60%)', 'hsl(213 93% 68%)')};
|
||||
}
|
||||
|
||||
.page-separator {
|
||||
color: ${cssManager.bdTheme('hsl(215 16% 60%)', 'hsl(215 16% 50%)')};
|
||||
}
|
||||
|
||||
.zoom-level {
|
||||
font-size: 13px;
|
||||
font-weight: 500;
|
||||
min-width: 48px;
|
||||
text-align: center;
|
||||
}
|
||||
|
||||
.viewer-container {
|
||||
flex: 1;
|
||||
display: flex;
|
||||
overflow: hidden;
|
||||
position: relative;
|
||||
}
|
||||
|
||||
.sidebar {
|
||||
width: 200px;
|
||||
background: ${cssManager.bdTheme('hsl(0 0% 100%)', 'hsl(215 20% 15%)')};
|
||||
border-right: 1px solid ${cssManager.bdTheme('hsl(214 31% 91%)', 'hsl(217 25% 22%)')};
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
}
|
||||
|
||||
.sidebar-header {
|
||||
height: 40px;
|
||||
padding: 0 12px;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: space-between;
|
||||
border-bottom: 1px solid ${cssManager.bdTheme('hsl(214 31% 91%)', 'hsl(217 25% 22%)')};
|
||||
font-size: 13px;
|
||||
font-weight: 600;
|
||||
color: ${cssManager.bdTheme('hsl(215 16% 45%)', 'hsl(215 16% 75%)')};
|
||||
}
|
||||
|
||||
.sidebar-close {
|
||||
width: 24px;
|
||||
height: 24px;
|
||||
border-radius: 4px;
|
||||
background: transparent;
|
||||
border: none;
|
||||
cursor: pointer;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
color: ${cssManager.bdTheme('hsl(215 16% 45%)', 'hsl(215 16% 75%)')};
|
||||
transition: background 0.15s ease;
|
||||
}
|
||||
|
||||
.sidebar-close:hover {
|
||||
background: ${cssManager.bdTheme('hsl(214 31% 92%)', 'hsl(217 25% 22%)')};
|
||||
}
|
||||
|
||||
.sidebar-close dees-icon {
|
||||
font-size: 14px;
|
||||
}
|
||||
|
||||
.sidebar-content {
|
||||
flex: 1;
|
||||
overflow-y: auto;
|
||||
padding: 12px;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 12px;
|
||||
}
|
||||
|
||||
.thumbnail {
|
||||
position: relative;
|
||||
border-radius: 8px;
|
||||
overflow: hidden;
|
||||
cursor: pointer;
|
||||
border: 2px solid transparent;
|
||||
transition: border-color 0.15s ease;
|
||||
background: ${cssManager.bdTheme('hsl(0 0% 100%)', 'hsl(215 20% 18%)')};
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
min-height: 100px;
|
||||
}
|
||||
|
||||
.thumbnail:hover {
|
||||
border-color: ${cssManager.bdTheme('hsl(214 31% 86%)', 'hsl(217 25% 35%)')};
|
||||
}
|
||||
|
||||
.thumbnail.active {
|
||||
border-color: ${cssManager.bdTheme('hsl(217 91% 60%)', 'hsl(213 93% 68%)')};
|
||||
}
|
||||
|
||||
.thumbnail-canvas {
|
||||
display: block;
|
||||
max-width: 100%;
|
||||
height: auto;
|
||||
image-rendering: -webkit-optimize-contrast;
|
||||
image-rendering: crisp-edges;
|
||||
}
|
||||
|
||||
.thumbnail-number {
|
||||
position: absolute;
|
||||
bottom: 4px;
|
||||
right: 4px;
|
||||
background: ${cssManager.bdTheme('rgba(0, 0, 0, 0.7)', 'rgba(0, 0, 0, 0.8)')};
|
||||
color: white;
|
||||
font-size: 11px;
|
||||
font-weight: 500;
|
||||
padding: 2px 6px;
|
||||
border-radius: 4px;
|
||||
}
|
||||
|
||||
.viewer-main {
|
||||
flex: 1;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
overflow: auto;
|
||||
padding: 20px;
|
||||
}
|
||||
|
||||
.loading-container {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
gap: 16px;
|
||||
color: ${cssManager.bdTheme('hsl(215 16% 45%)', 'hsl(215 16% 75%)')};
|
||||
}
|
||||
|
||||
.loading-spinner {
|
||||
width: 32px;
|
||||
height: 32px;
|
||||
border-radius: 50%;
|
||||
border: 3px solid ${cssManager.bdTheme('hsl(214 31% 86%)', 'hsl(217 25% 28%)')};
|
||||
border-top-color: ${cssManager.bdTheme('hsl(217 91% 60%)', 'hsl(213 93% 68%)')};
|
||||
animation: spin 0.8s linear infinite;
|
||||
}
|
||||
|
||||
@keyframes spin {
|
||||
to {
|
||||
transform: rotate(360deg);
|
||||
}
|
||||
}
|
||||
|
||||
.loading-text {
|
||||
font-size: 14px;
|
||||
font-weight: 500;
|
||||
}
|
||||
|
||||
.canvas-container {
|
||||
background: white;
|
||||
box-shadow: 0 2px 12px ${cssManager.bdTheme('rgba(0, 0, 0, 0.1)', 'rgba(0, 0, 0, 0.3)')};
|
||||
border-radius: 4px;
|
||||
overflow: hidden;
|
||||
display: inline-block;
|
||||
}
|
||||
|
||||
#pdf-canvas {
|
||||
display: block;
|
||||
image-rendering: -webkit-optimize-contrast;
|
||||
image-rendering: crisp-edges;
|
||||
}
|
||||
|
||||
.pdf-viewer.with-sidebar .viewer-main {
|
||||
margin-left: 0;
|
||||
}
|
||||
`,
|
||||
];
|
||||
@@ -10,6 +10,11 @@ declare global {
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @deprecated Use DeesPdfViewer or DeesPdfPreview instead
|
||||
* - DeesPdfViewer: Full-featured PDF viewing with controls, navigation, zoom
|
||||
* - DeesPdfPreview: Lightweight, performance-optimized preview for grids
|
||||
*/
|
||||
@customElement('dees-pdf')
|
||||
export class DeesPdf extends DeesElement {
|
||||
// DEMO
|
||||
@@ -107,4 +112,4 @@ export class DeesPdf extends DeesElement {
|
||||
}
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
1
ts_web/elements/dees-pdf/index.ts
Normal file
1
ts_web/elements/dees-pdf/index.ts
Normal file
@@ -0,0 +1 @@
|
||||
export * from './component.js';
|
||||
@@ -48,7 +48,9 @@ export * from './dees-mobilenavigation.js';
|
||||
export * from './dees-modal.js';
|
||||
export * from './dees-input-multitoggle.js';
|
||||
export * from './dees-panel.js';
|
||||
export * from './dees-pdf.js';
|
||||
export * from './dees-pdf/index.js'; // @deprecated - Use dees-pdf-viewer or dees-pdf-preview instead
|
||||
export * from './dees-pdf-viewer/index.js';
|
||||
export * from './dees-pdf-preview/index.js';
|
||||
export * from './dees-searchbar.js';
|
||||
export * from './dees-shopping-productcard.js';
|
||||
export * from './dees-simple-appdash.js';
|
||||
|
||||
Reference in New Issue
Block a user