437 lines
17 KiB
HTML
437 lines
17 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>Harmonica Tab Generator</title>
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<!-- React and ReactDOM from CDN -->
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<script crossorigin src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
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<script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
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<!-- Babel Standalone for JSX -->
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<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
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'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
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sans-serif;
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-webkit-font-smoothing: antialiased;
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-moz-osx-font-smoothing: grayscale;
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}
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.gradient-bg {
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background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
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min-height: 100vh;
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}
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.container {
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max-width: 1200px;
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margin: 0 auto;
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padding: 2rem;
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}
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.card {
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background: white;
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border-radius: 0.5rem;
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box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
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padding: 1.5rem;
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margin-bottom: 2rem;
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}
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.title {
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font-size: 2.25rem;
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font-weight: 700;
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color: #1f2937;
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margin-bottom: 0.5rem;
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}
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.subtitle {
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font-size: 1rem;
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color: #6b7280;
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margin-bottom: 2rem;
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}
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.section-title {
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font-size: 1.25rem;
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font-weight: 600;
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color: #374151;
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margin-bottom: 1rem;
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}
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.textarea {
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width: 100%;
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min-height: 250px;
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padding: 1rem;
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border: 2px solid #d1d5db;
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border-radius: 0.5rem;
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font-family: 'Courier New', monospace;
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font-size: 0.875rem;
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resize: vertical;
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transition: border-color 0.2s;
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}
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.textarea:focus {
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outline: none;
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border-color: #6366f1;
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}
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.button-group {
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display: flex;
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gap: 0.75rem;
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margin-top: 1rem;
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}
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.button {
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flex: 1;
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padding: 0.75rem 1.5rem;
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font-weight: 600;
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border: none;
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border-radius: 0.5rem;
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cursor: pointer;
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transition: all 0.2s;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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}
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.button-primary {
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background-color: #6366f1;
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color: white;
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}
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.button-primary:hover {
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background-color: #4f46e5;
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}
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.button-secondary {
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background-color: #9333ea;
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color: white;
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}
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.button-secondary:hover {
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background-color: #7e22ce;
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}
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.preview-container {
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border: 2px solid #e5e7eb;
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border-radius: 0.5rem;
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background-color: #f9fafb;
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padding: 1rem;
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overflow: auto;
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max-height: 600px;
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}
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.tip {
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margin-top: 1rem;
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font-size: 0.875rem;
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color: #6b7280;
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}
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.instructions {
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list-style: none;
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}
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.instruction-item {
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display: flex;
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align-items: flex-start;
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margin-bottom: 0.75rem;
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color: #4b5563;
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}
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.instruction-number {
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color: #6366f1;
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font-weight: 700;
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margin-right: 0.5rem;
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flex-shrink: 0;
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}
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@media (max-width: 768px) {
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.container {
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padding: 1rem;
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}
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.title {
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font-size: 1.75rem;
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}
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.button-group {
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flex-direction: column;
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}
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}
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</style>
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</head>
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<body>
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<div id="root"></div>
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<script type="text/babel">
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const { useState, useRef } = React;
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const HarmonicaTabGenerator = () => {
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const [input, setInput] = useState(` 4 6 -5 5 -4 4 3
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6 7 -6 6 -6 6 5
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4 4 4 5 5 5 5 5 -5 5 4`);
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const svgRef = useRef(null);
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// Parse input and add + signs to positive numbers
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const parseInput = (text) => {
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const lines = text.split('\n');
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return lines.map(line => {
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// Check if line contains tab notation (numbers with optional minus signs and spaces)
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const isTabLine = /^[\s\d\-]+$/.test(line.trim()) && line.trim().length > 0;
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let processedContent = line;
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// If it's a tab line, add + signs to positive numbers
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if (isTabLine) {
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processedContent = line.replace(/(\s|^)(\d+)/g, (match, space, number) => {
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return space + '+' + number;
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});
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}
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return {
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content: processedContent,
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isTab: isTabLine
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};
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});
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};
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// Calculate layout (columns based on max 10 lines per column)
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const calculateLayout = (parsedLines) => {
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const tabLines = parsedLines.filter(l => l.isTab);
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const maxLinesPerColumn = 10;
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const numColumns = Math.ceil(tabLines.length / maxLinesPerColumn);
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const columns = [];
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let currentIndex = 0;
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for (let col = 0; col < numColumns; col++) {
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const columnLines = [];
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let tabCount = 0;
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while (currentIndex < parsedLines.length && tabCount < maxLinesPerColumn) {
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const line = parsedLines[currentIndex];
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columnLines.push(line);
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if (line.isTab) {
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tabCount++;
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}
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currentIndex++;
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}
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columns.push(columnLines);
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}
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return columns;
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};
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const parsedLines = parseInput(input);
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const columns = calculateLayout(parsedLines);
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// SVG dimensions and styling
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const lineHeight = 40;
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const fontSize = 28;
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const annotationFontSize = 12;
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const columnWidth = 400;
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const padding = 40;
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const columnGap = 60;
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const maxLinesInAnyColumn = Math.max(...columns.map(col => {
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return col.reduce((sum, line) => {
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return sum + (line.isTab ? 1 : 0.5);
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}, 0);
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}), 1);
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const svgWidth = columns.length * columnWidth + (columns.length - 1) * columnGap + padding * 2;
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const svgHeight = maxLinesInAnyColumn * lineHeight + padding * 2;
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// Export as PNG
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const exportAsPNG = () => {
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const svgElement = svgRef.current;
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const svgData = new XMLSerializer().serializeToString(svgElement);
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const canvas = document.createElement('canvas');
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const ctx = canvas.getContext('2d');
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// Set canvas size (2x for better quality)
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canvas.width = svgWidth * 2;
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canvas.height = svgHeight * 2;
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const img = new Image();
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const svgBlob = new Blob([svgData], { type: 'image/svg+xml;charset=utf-8' });
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const url = URL.createObjectURL(svgBlob);
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img.onload = () => {
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ctx.scale(2, 2);
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ctx.drawImage(img, 0, 0);
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URL.revokeObjectURL(url);
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canvas.toBlob((blob) => {
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const link = document.createElement('a');
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link.download = 'harmonica-tabs.png';
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link.href = URL.createObjectURL(blob);
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link.click();
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});
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};
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img.src = url;
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};
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// Export as SVG
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const exportAsSVG = () => {
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const svgElement = svgRef.current;
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const svgData = new XMLSerializer().serializeToString(svgElement);
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const blob = new Blob([svgData], { type: 'image/svg+xml;charset=utf-8' });
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const link = document.createElement('a');
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link.download = 'harmonica-tabs.svg';
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link.href = URL.createObjectURL(blob);
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link.click();
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};
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return (
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<div className="gradient-bg">
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<div className="container">
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<h1 className="title">Harmonica Tab Generator</h1>
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<p className="subtitle">Create beautiful, readable images of your harmonica tabs</p>
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{/* Input Section */}
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<div className="card">
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<h2 className="section-title">Input Your Tabs</h2>
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<textarea
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value={input}
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onChange={(e) => setInput(e.target.value)}
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className="textarea"
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placeholder="Enter your harmonica tabs here...
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Example:
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4 6 -5 5 -4 4 3
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6 7 -6 6 -6 6 5"
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/>
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<div className="button-group">
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<button
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onClick={exportAsPNG}
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className="button button-primary"
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>
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📥 Download PNG
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</button>
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<button
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onClick={exportAsSVG}
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className="button button-secondary"
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>
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📥 Download SVG
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</button>
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</div>
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<p className="tip">
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💡 Tip: Positive numbers will automatically get a + sign. Add text for annotations - they'll appear smaller.
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</p>
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</div>
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{/* Preview Section */}
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<div className="card">
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<h2 className="section-title">Preview</h2>
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<div className="preview-container">
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<svg
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ref={svgRef}
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width={svgWidth}
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height={svgHeight}
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xmlns="http://www.w3.org/2000/svg"
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style={{ background: '#ffffff', display: 'block' }}
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>
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{/* Background */}
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<rect width={svgWidth} height={svgHeight} fill="#ffffff" />
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{/* Render columns */}
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{columns.map((column, colIndex) => {
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let yOffset = padding;
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const xOffset = padding + colIndex * (columnWidth + columnGap);
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return (
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<g key={colIndex}>
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{column.map((line, lineIndex) => {
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const currentY = yOffset;
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if (line.isTab) {
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// Render tab line with monospace font
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yOffset += lineHeight;
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return (
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<text
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key={lineIndex}
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x={xOffset}
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y={currentY}
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fontFamily="'Courier New', monospace"
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fontSize={fontSize}
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fontWeight="600"
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fill="#1f2937"
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letterSpacing="2"
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>
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{line.content}
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</text>
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);
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} else if (line.content.trim()) {
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// Render annotation with smaller font
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yOffset += lineHeight * 0.6;
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return (
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<text
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key={lineIndex}
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x={xOffset}
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y={currentY}
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fontFamily="Arial, sans-serif"
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fontSize={annotationFontSize}
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fontStyle="italic"
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fill="#6b7280"
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>
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{line.content}
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</text>
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);
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}
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return null;
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})}
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</g>
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);
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})}
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</svg>
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</div>
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</div>
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{/* Instructions */}
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<div className="card">
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<h2 className="section-title">How to Use</h2>
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<ul className="instructions">
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<li className="instruction-item">
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<span className="instruction-number">1.</span>
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<span>Enter your harmonica tabs in the input field (numbers with spaces)</span>
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</li>
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<li className="instruction-item">
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<span className="instruction-number">2.</span>
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<span>Positive numbers automatically get a + sign, negative numbers keep the - sign</span>
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</li>
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<li className="instruction-item">
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<span className="instruction-number">3.</span>
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<span>Add text annotations if needed - they'll appear smaller and italicized</span>
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</li>
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<li className="instruction-item">
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<span className="instruction-number">4.</span>
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<span>Preview updates automatically - tabs are split into columns (max 10 lines per column)</span>
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</li>
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<li className="instruction-item">
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<span className="instruction-number">5.</span>
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<span>Download as PNG for sharing or SVG for editing</span>
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</li>
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</ul>
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</div>
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</div>
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</div>
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);
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};
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// Render the app
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const root = ReactDOM.createRoot(document.getElementById('root'));
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root.render(<HarmonicaTabGenerator />);
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</script>
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</body>
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</html>
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