Michael Mainguy
874f3c4412
- Created vite.standalone.config.js for optimized bundle building - Added build scripts for standalone bundle generation - Generated three formats: IIFE (28KB), UMD (28KB), ES Module (61KB) - Includes all dependencies: qrcode and imagetracer - Added comprehensive documentation and examples - Created build script with detailed bundle information - Added terser for minification optimization - Fixed package.json dependencies and scripts
308 lines
11 KiB
HTML
308 lines
11 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>QR Code Generator - Vanilla JavaScript Example</title>
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<style>
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body {
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font-family: Arial, sans-serif;
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max-width: 800px;
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margin: 0 auto;
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padding: 20px;
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background-color: #f5f5f5;
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}
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.container {
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background: white;
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padding: 30px;
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border-radius: 10px;
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box-shadow: 0 2px 10px rgba(0,0,0,0.1);
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}
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h1 {
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color: #333;
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text-align: center;
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margin-bottom: 30px;
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}
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.form-group {
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margin-bottom: 20px;
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}
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label {
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display: block;
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margin-bottom: 5px;
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font-weight: bold;
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color: #555;
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}
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input, textarea {
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width: 100%;
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padding: 10px;
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border: 1px solid #ddd;
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border-radius: 5px;
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font-size: 14px;
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}
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textarea {
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height: 100px;
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resize: vertical;
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}
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button {
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background-color: #007bff;
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color: white;
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padding: 10px 20px;
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border: none;
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border-radius: 5px;
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cursor: pointer;
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font-size: 14px;
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margin-right: 10px;
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}
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button:hover {
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background-color: #0056b3;
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}
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.qr-display {
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text-align: center;
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margin-top: 30px;
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}
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.qr-display img {
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max-width: 100%;
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border: 1px solid #ddd;
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border-radius: 5px;
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}
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.color-controls {
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display: flex;
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gap: 20px;
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margin-bottom: 20px;
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}
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.color-input {
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flex: 1;
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}
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.color-input input {
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width: 100%;
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height: 40px;
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padding: 5px;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<h1>QR Code Generator - Vanilla JavaScript</h1>
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<div class="form-group">
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<label for="text-input">Enter text to generate QR code:</label>
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<textarea id="text-input" placeholder="Enter your text here..."></textarea>
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</div>
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<div class="color-controls">
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<div class="color-input">
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<label for="foreground-color">QR Code Color:</label>
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<input type="color" id="foreground-color" value="#000000">
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</div>
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<div class="color-input">
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<label for="background-color">Background Color:</label>
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<input type="color" id="background-color" value="#FFFFFF">
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</div>
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</div>
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<div class="form-group">
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<label for="image-upload">Upload Custom Image (optional):</label>
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<input type="file" id="image-upload" accept="image/*">
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</div>
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<div class="form-group">
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<label for="image-size">Image Size (%):</label>
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<input type="range" id="image-size" min="5" max="30" value="20">
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<span id="image-size-value">20%</span>
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</div>
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<div class="form-group">
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<button onclick="generateQRCode()">Generate QR Code</button>
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<button onclick="exportAsSVG()">Export as SVG</button>
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<button onclick="clearAll()">Clear</button>
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</div>
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<div class="qr-display" id="qr-display"></div>
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</div>
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<!-- Import the utility functions -->
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<script type="module">
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import {
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generateQRCode,
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generateCompleteSVGQRCode,
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downloadSVG,
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fileToDataURL,
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validateImageFile
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} from '../src/utils/qrCodeUtils.js';
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// Make functions available globally
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window.generateQRCode = generateQRCode;
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window.generateCompleteSVGQRCode = generateCompleteSVGQRCode;
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window.downloadSVG = downloadSVG;
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window.fileToDataURL = fileToDataURL;
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window.validateImageFile = validateImageFile;
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// Global variables
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let customImageUrl = null;
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// Initialize
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document.addEventListener('DOMContentLoaded', function() {
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// Update image size display
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const sizeSlider = document.getElementById('image-size');
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const sizeValue = document.getElementById('image-size-value');
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sizeSlider.addEventListener('input', function() {
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sizeValue.textContent = this.value + '%';
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});
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// Handle image upload
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const imageUpload = document.getElementById('image-upload');
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imageUpload.addEventListener('change', async function(event) {
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const file = event.target.files[0];
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if (file) {
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const validation = validateImageFile(file);
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if (!validation.success) {
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alert(validation.error);
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return;
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}
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try {
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customImageUrl = await fileToDataURL(file);
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console.log('Image uploaded successfully');
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} catch (error) {
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console.error('Error processing image file:', error);
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alert('Error processing image file');
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}
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}
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});
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});
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// Generate QR Code function
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window.generateQRCode = async function() {
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const text = document.getElementById('text-input').value.trim();
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const foregroundColor = document.getElementById('foreground-color').value;
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const backgroundColor = document.getElementById('background-color').value;
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const imageSize = parseInt(document.getElementById('image-size').value);
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if (!text) {
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alert('Please enter some text to generate a QR code');
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return;
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}
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try {
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const qrDisplay = document.getElementById('qr-display');
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qrDisplay.innerHTML = '<p>Generating QR code...</p>';
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// Generate QR code with custom image if provided
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const qrCodeUrl = await generateQRCode(text, foregroundColor, backgroundColor);
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if (customImageUrl) {
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// Add custom image to QR code
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const qrWithImage = await addImageToQRCode(qrCodeUrl, customImageUrl, imageSize);
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displayQRCode(qrWithImage);
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} else {
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displayQRCode(qrCodeUrl);
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}
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} catch (error) {
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console.error('Error generating QR code:', error);
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alert('Error generating QR code');
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}
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};
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// Export as SVG function
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window.exportAsSVG = async function() {
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const text = document.getElementById('text-input').value.trim();
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const foregroundColor = document.getElementById('foreground-color').value;
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const backgroundColor = document.getElementById('background-color').value;
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const imageSize = parseInt(document.getElementById('image-size').value);
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if (!text) {
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alert('Please enter some text to generate a QR code');
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return;
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}
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try {
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// Generate complete SVG QR code
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const svgContent = await generateCompleteSVGQRCode(
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text,
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customImageUrl,
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imageSize,
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foregroundColor,
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backgroundColor
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);
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if (svgContent) {
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downloadSVG(svgContent, 'qrcode.svg');
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} else {
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alert('Error generating SVG');
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}
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} catch (error) {
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console.error('Error exporting SVG:', error);
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alert('Error exporting SVG');
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}
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};
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// Clear all function
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window.clearAll = function() {
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document.getElementById('text-input').value = '';
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document.getElementById('image-upload').value = '';
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document.getElementById('qr-display').innerHTML = '';
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customImageUrl = null;
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};
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// Display QR code function
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function displayQRCode(dataUrl) {
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const qrDisplay = document.getElementById('qr-display');
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qrDisplay.innerHTML = `
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<h3>Generated QR Code:</h3>
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<img src="${dataUrl}" alt="QR Code" style="max-width: 300px;">
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`;
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}
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// Add image to QR code function (simplified version)
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async function addImageToQRCode(qrCodeUrl, imageUrl, imageSize) {
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return new Promise((resolve) => {
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const canvas = document.createElement('canvas');
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const ctx = canvas.getContext('2d');
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canvas.width = 512;
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canvas.height = 512;
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const qrImage = new Image();
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const customImage = new Image();
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qrImage.onload = () => {
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ctx.drawImage(qrImage, 0, 0, 512, 512);
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customImage.onload = () => {
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const calculatedImageSize = 512 * (imageSize / 100);
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const margin = 16;
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const boxSize = calculatedImageSize + (margin * 2);
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const boxX = (512 - boxSize) / 2;
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const boxY = (512 - boxSize) / 2;
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ctx.fillStyle = '#FFFFFF';
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ctx.fillRect(boxX, boxY, boxSize, boxSize);
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const imageX = boxX + margin;
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const imageY = boxY + margin;
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ctx.drawImage(customImage, imageX, imageY, calculatedImageSize, calculatedImageSize);
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resolve(canvas.toDataURL('image/png'));
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};
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customImage.onerror = () => {
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console.error('Error loading custom image');
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resolve(qrCodeUrl);
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};
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customImage.src = imageUrl;
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};
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qrImage.onerror = () => {
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console.error('Error loading QR code');
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resolve('');
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};
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qrImage.src = qrCodeUrl;
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});
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}
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</script>
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</body>
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</html> |