Basic harmonica tabs image creator

This commit is contained in:
2026-01-28 22:30:09 +01:00
commit 586adb8517
19 changed files with 4126 additions and 0 deletions

42
.eslintrc Normal file
View File

@@ -0,0 +1,42 @@
{
"env": {
"browser": true,
"es2021": true,
"node": true
},
"extends": [
"airbnb",
"airbnb/hooks",
"plugin:react/recommended",
"plugin:prettier/recommended"
],
"parserOptions": {
"ecmaFeatures": {
"jsx": true
},
"ecmaVersion": "latest",
"sourceType": "module"
},
"plugins": ["react", "prettier"],
"rules": {
"prettier/prettier": "error",
"react/react-in-jsx-scope": "off",
"react/prop-types": "warn",
"no-console": "warn",
"max-len": [
"error",
{
"code": 120,
"ignoreUrls": true,
"ignoreStrings": true,
"ignoreTemplateLiterals": true
}
],
"semi": ["error", "always"]
},
"settings": {
"react": {
"version": "detect"
}
}
}

24
.gitignore vendored Normal file
View File

@@ -0,0 +1,24 @@
# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
pnpm-debug.log*
lerna-debug.log*
node_modules
dist
dist-ssr
*.local
# Editor directories and files
.vscode/*
!.vscode/extensions.json
.idea
.DS_Store
*.suo
*.ntvs*
*.njsproj
*.sln
*.sw?

10
.pretrierrc Normal file
View File

@@ -0,0 +1,10 @@
{
"semi": true,
"trailingComma": "es5",
"singleQuote": true,
"printWidth": 120,
"tabWidth": 2,
"useTabs": false,
"arrowParens": "always",
"endOfLine": "lf"
}

56
README.md Normal file
View File

@@ -0,0 +1,56 @@
# Harmonica Tabs Image Generator
A beautiful React application for generating clean, readable images of harmonica tabs.
## Features
- ✨ Auto-formatting: Positive numbers automatically get a + sign
- 📊 Smart layout: Automatically splits long tabs into columns (max 10 lines per column)
- 📝 Text annotations: Add notes that appear smaller alongside your tabs
- 🎨 High contrast: Professional typography for excellent readability
- 📥 Multiple formats: Export as PNG (high-res) or SVG (vector)
- 📱 Responsive: Works on all screen sizes with vertical layout
## Installation
1. Navigate to the project directory:
```bash
cd harmonica-tabs-image-app
```
2. Install dependencies:
```bash
npm install
```
3. Start the development server:
```bash
npm run dev
```
The app will open in your browser at `http://localhost:5173`
## Usage
1. Enter your harmonica tabs in the input field
- Use numbers for holes (e.g., 4, 6, 5)
- Positive numbers automatically get a + sign
- Use minus sign for draw notes (e.g., -5, -6)
2. Add text annotations if needed (they'll appear smaller and italicized)
3. Preview updates automatically
4. Download your tabs as PNG or SVG
## Example Input
```
4 6 -5 5 -4 4 3
6 7 -6 6 -6 6 5
4 4 4 5 5 5 5 5 -5 5 4
```
## License
MIT

29
eslint.config.js Normal file
View File

@@ -0,0 +1,29 @@
import js from '@eslint/js'
import globals from 'globals'
import reactHooks from 'eslint-plugin-react-hooks'
import reactRefresh from 'eslint-plugin-react-refresh'
import { defineConfig, globalIgnores } from 'eslint/config'
export default defineConfig([
globalIgnores(['dist']),
{
files: ['**/*.{js,jsx}'],
extends: [
js.configs.recommended,
reactHooks.configs.flat.recommended,
reactRefresh.configs.vite,
],
languageOptions: {
ecmaVersion: 2020,
globals: globals.browser,
parserOptions: {
ecmaVersion: 'latest',
ecmaFeatures: { jsx: true },
sourceType: 'module',
},
},
rules: {
'no-unused-vars': ['error', { varsIgnorePattern: '^[A-Z_]' }],
},
},
])

13
index.html Normal file
View File

@@ -0,0 +1,13 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<link rel="icon" type="image/svg+xml" href="/vite.svg" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>harmonica-tabs-image-app</title>
</head>
<body>
<div id="root"></div>
<script type="module" src="/src/main.jsx"></script>
</body>
</html>

2943
package-lock.json generated Normal file

File diff suppressed because it is too large Load Diff

31
package.json Normal file
View File

@@ -0,0 +1,31 @@
{
"name": "harmonica-tabs-image-app",
"private": true,
"version": "0.0.0",
"type": "module",
"scripts": {
"dev": "vite",
"build": "vite build",
"lint": "eslint .",
"lint:fix": "eslint . --ext js,jsx --fix",
"format": "prettier --write \"src/**/*.{js,jsx,json,css,md}\"",
"format:check": "prettier --check \"src/**/*.{js,jsx,json,css,md}\"",
"preview": "vite preview"
},
"dependencies": {
"react": "^19.2.0",
"react-dom": "^19.2.0"
},
"devDependencies": {
"@eslint/js": "^9.39.1",
"@types/react": "^19.2.5",
"@types/react-dom": "^19.2.3",
"@vitejs/plugin-react": "^5.1.1",
"eslint": "^9.39.1",
"eslint-plugin-react-hooks": "^7.0.1",
"eslint-plugin-react-refresh": "^0.4.24",
"globals": "^16.5.0",
"prettier": "^3.8.1",
"vite": "^7.2.4"
}
}

1
public/vite.svg Normal file
View File

@@ -0,0 +1 @@
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>

After

Width:  |  Height:  |  Size: 1.5 KiB

42
src/App.css Normal file
View File

@@ -0,0 +1,42 @@
#root {
max-width: 1280px;
margin: 0 auto;
padding: 2rem;
text-align: center;
}
.logo {
height: 6em;
padding: 1.5em;
will-change: filter;
transition: filter 300ms;
}
.logo:hover {
filter: drop-shadow(0 0 2em #646cffaa);
}
.logo.react:hover {
filter: drop-shadow(0 0 2em #61dafbaa);
}
@keyframes logo-spin {
from {
transform: rotate(0deg);
}
to {
transform: rotate(360deg);
}
}
@media (prefers-reduced-motion: no-preference) {
a:nth-of-type(2) .logo {
animation: logo-spin infinite 20s linear;
}
}
.card {
padding: 2em;
}
.read-the-docs {
color: #888;
}

8
src/App.jsx Normal file
View File

@@ -0,0 +1,8 @@
import React from "react";
import HarmonicaTabGenerator from "./components/HarmonicaTabGenerator";
function App() {
return <HarmonicaTabGenerator />;
}
export default App;

1
src/assets/react.svg Normal file
View File

@@ -0,0 +1 @@
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>

After

Width:  |  Height:  |  Size: 4.0 KiB

View File

@@ -0,0 +1,287 @@
import React, { useState, useRef } from "react";
const DEMO_TABS = `
4 6 -5 5 -4 4 3
6 7 -6 6 -6 6 5
4 4 4 5 5 5 5 5 -5 5 4
`;
const MAX_LINES_PER_COLUMN = 10;
const HarmonicaTabGenerator = () => {
const [input, setInput] = useState(DEMO_TABS);
const svgRef = useRef(null);
// Parse input and add + signs to positive numbers
const parseInput = (text) => {
const lines = text.split("\n");
return lines.map((line) => {
// Check if line contains tab notation (numbers with optional minus signs and spaces)
const isTabLine =
/^[\s\d-]+$/.test(line.trim()) && line.trim().length > 0;
let processedContent = line;
// If it's a tab line, add + signs to positive numbers
if (isTabLine) {
processedContent = line.replace(
/(\s|^)(\d+)/g,
(match, space, number) => {
return space + "+" + number;
},
);
}
return {
content: processedContent,
isTab: isTabLine,
};
});
};
// Calculate layout (columns based on max 10 lines per column)
const calculateLayout = (parsedLines) => {
const tabLines = parsedLines.filter((l) => l.isTab);
const numColumns = Math.ceil(tabLines.length / MAX_LINES_PER_COLUMN);
const columns = [];
let currentIndex = 0;
for (let col = 0; col < numColumns; col++) {
const columnLines = [];
let tabCount = 0;
while (
currentIndex < parsedLines.length &&
tabCount < MAX_LINES_PER_COLUMN
) {
const line = parsedLines[currentIndex];
columnLines.push(line);
if (line.isTab) {
tabCount++;
}
currentIndex++;
}
columns.push(columnLines);
}
return columns;
};
const parsedLines = parseInput(input);
const columns = calculateLayout(parsedLines);
// SVG dimensions and styling
const lineHeight = 40;
const fontSize = 28;
const annotationFontSize = 12;
const columnWidth = 400;
const padding = 40;
const columnGap = 60;
const maxLinesInAnyColumn = Math.max(
...columns.map((col) => {
return col.reduce((sum, line) => {
return sum + (line.isTab ? 1 : 0.5);
}, 0);
}),
1,
);
const svgWidth =
columns.length * columnWidth +
(columns.length - 1) * columnGap +
padding * 2;
const svgHeight = maxLinesInAnyColumn * lineHeight + padding * 2;
// Export as PNG
const exportAsPNG = () => {
const svgElement = svgRef.current;
const svgData = new XMLSerializer().serializeToString(svgElement);
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
// Set canvas size (2x for better quality)
canvas.width = svgWidth * 2;
canvas.height = svgHeight * 2;
const img = new Image();
const svgBlob = new Blob([svgData], {
type: "image/svg+xml;charset=utf-8",
});
const url = URL.createObjectURL(svgBlob);
img.onload = () => {
ctx.scale(2, 2);
ctx.drawImage(img, 0, 0);
URL.revokeObjectURL(url);
canvas.toBlob((blob) => {
const link = document.createElement("a");
link.download = "harmonica-tabs.png";
link.href = URL.createObjectURL(blob);
link.click();
});
};
img.src = url;
};
// Export as SVG
const exportAsSVG = () => {
const svgElement = svgRef.current;
const svgData = new XMLSerializer().serializeToString(svgElement);
const blob = new Blob([svgData], { type: "image/svg+xml;charset=utf-8" });
const link = document.createElement("a");
link.download = "harmonica-tabs.svg";
link.href = URL.createObjectURL(blob);
link.click();
};
return (
<div className="gradient-bg">
<div className="container">
<h1 className="title">Harmonica Tab Generator</h1>
<p className="subtitle">
Create beautiful, readable images of your harmonica tabs
</p>
{/* Input Section */}
<div className="card">
<h2 className="section-title">Input Your Tabs</h2>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="textarea"
placeholder="Enter your harmonica tabs here...
Example:
4 6 -5 5 -4 4 3
6 7 -6 6 -6 6 5"
/>
<div className="button-group">
<button onClick={exportAsPNG} className="button button-primary">
📥 Download PNG
</button>
<button onClick={exportAsSVG} className="button button-secondary">
📥 Download SVG
</button>
</div>
<p className="tip">
💡 Tip: Positive numbers will automatically get a + sign. Add text
for annotations - they'll appear smaller.
</p>
</div>
{/* Preview Section */}
<div className="card">
<h2 className="section-title">Preview</h2>
<div className="preview-container">
<svg
ref={svgRef}
width={svgWidth}
height={svgHeight}
xmlns="http://www.w3.org/2000/svg"
style={{ background: "#ffffff", display: "block" }}
>
{/* Background */}
<rect width={svgWidth} height={svgHeight} fill="#ffffff" />
{/* Render columns */}
{columns.map((column, colIndex) => {
let yOffset = padding;
const xOffset = padding + colIndex * (columnWidth + columnGap);
return (
<g key={colIndex}>
{column.map((line, lineIndex) => {
const currentY = yOffset;
if (line.isTab) {
// Render tab line with monospace font
yOffset += lineHeight;
return (
<text
key={lineIndex}
x={xOffset}
y={currentY}
fontFamily="'Courier New', monospace"
fontSize={fontSize}
fontWeight="600"
fill="#1f2937"
letterSpacing="2"
>
{line.content}
</text>
);
} else if (line.content.trim()) {
// Render annotation with smaller font
yOffset += lineHeight * 0.6;
return (
<text
key={lineIndex}
x={xOffset}
y={currentY}
fontFamily="Arial, sans-serif"
fontSize={annotationFontSize}
fontStyle="italic"
fill="#6b7280"
>
{line.content}
</text>
);
}
return null;
})}
</g>
);
})}
</svg>
</div>
</div>
{/* Instructions */}
<div className="card">
<h2 className="section-title">How to Use</h2>
<ul className="instructions">
<li className="instruction-item">
<span className="instruction-number">1.</span>
<span>
Enter your harmonica tabs in the input field (numbers with
spaces)
</span>
</li>
<li className="instruction-item">
<span className="instruction-number">2.</span>
<span>
Positive numbers automatically get a + sign, negative numbers
keep the - sign
</span>
</li>
<li className="instruction-item">
<span className="instruction-number">3.</span>
<span>
Add text annotations if needed - they'll appear smaller and
italicized
</span>
</li>
<li className="instruction-item">
<span className="instruction-number">4.</span>
<span>
Preview updates automatically - tabs are split into columns (max
10 lines per column)
</span>
</li>
<li className="instruction-item">
<span className="instruction-number">5.</span>
<span>Download as PNG for sharing or SVG for editing</span>
</li>
</ul>
</div>
</div>
</div>
);
};
export default HarmonicaTabGenerator;

158
src/index.css Normal file
View File

@@ -0,0 +1,158 @@
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family:
-apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu",
"Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
code {
font-family: "Courier New", monospace;
}
/* Utility Classes */
.container {
max-width: 1200px;
margin: 0 auto;
padding: 2rem;
}
.gradient-bg {
background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
min-height: 100vh;
}
.card {
background: white;
border-radius: 0.5rem;
box-shadow:
0 4px 6px -1px rgba(0, 0, 0, 0.1),
0 2px 4px -1px rgba(0, 0, 0, 0.06);
padding: 1.5rem;
margin-bottom: 2rem;
}
.title {
font-size: 2.25rem;
font-weight: 700;
color: #1f2937;
margin-bottom: 0.5rem;
}
.subtitle {
font-size: 1rem;
color: #6b7280;
margin-bottom: 2rem;
}
.section-title {
font-size: 1.25rem;
font-weight: 600;
color: #374151;
margin-bottom: 1rem;
}
.textarea {
width: 100%;
min-height: 250px;
padding: 1rem;
border: 2px solid #d1d5db;
border-radius: 0.5rem;
font-family: "Courier New", monospace;
font-size: 0.875rem;
resize: vertical;
transition: border-color 0.2s;
}
.textarea:focus {
outline: none;
border-color: #6366f1;
}
.button-group {
display: flex;
gap: 0.75rem;
margin-top: 1rem;
}
.button {
flex: 1;
padding: 0.75rem 1.5rem;
font-weight: 600;
border: none;
border-radius: 0.5rem;
cursor: pointer;
transition: all 0.2s;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.button-primary {
background-color: #6366f1;
color: white;
}
.button-primary:hover {
background-color: #4f46e5;
}
.button-secondary {
background-color: #9333ea;
color: white;
}
.button-secondary:hover {
background-color: #7e22ce;
}
.preview-container {
border: 2px solid #e5e7eb;
border-radius: 0.5rem;
background-color: #f9fafb;
padding: 1rem;
overflow: auto;
max-height: 600px;
}
.tip {
margin-top: 1rem;
font-size: 0.875rem;
color: #6b7280;
}
.instructions {
list-style: none;
}
.instruction-item {
display: flex;
align-items: flex-start;
margin-bottom: 0.75rem;
color: #4b5563;
}
.instruction-number {
color: #6366f1;
font-weight: 700;
margin-right: 0.5rem;
flex-shrink: 0;
}
@media (max-width: 768px) {
.container {
padding: 1rem;
}
.title {
font-size: 1.75rem;
}
.button-group {
flex-direction: column;
}
}

17
src/index.html Normal file
View File

@@ -0,0 +1,17 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="theme-color" content="#000000" />
<meta
name="description"
content="Generate beautiful harmonica tab images"
/>
<title>Harmonica Tab Generator</title>
</head>
<body>
<noscript>You need to enable JavaScript to run this app.</noscript>
<div id="root"></div>
</body>
</html>

11
src/index.js Normal file
View File

@@ -0,0 +1,11 @@
import React from "react";
import ReactDOM from "react-dom/client";
import "./index.css";
import App from "./App";
const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(
<React.StrictMode>
<App />
</React.StrictMode>,
);

10
src/main.jsx Normal file
View File

@@ -0,0 +1,10 @@
import { StrictMode } from "react";
import { createRoot } from "react-dom/client";
import "./index.css";
import App from "./App.jsx";
createRoot(document.getElementById("root")).render(
<StrictMode>
<App />
</StrictMode>,
);

436
src/standalone.html Normal file
View File

@@ -0,0 +1,436 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Harmonica Tab Generator</title>
<!-- React and ReactDOM from CDN -->
<script crossorigin src="https://unpkg.com/react@18/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
<!-- Babel Standalone for JSX -->
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
.gradient-bg {
background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
min-height: 100vh;
}
.container {
max-width: 1200px;
margin: 0 auto;
padding: 2rem;
}
.card {
background: white;
border-radius: 0.5rem;
box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
padding: 1.5rem;
margin-bottom: 2rem;
}
.title {
font-size: 2.25rem;
font-weight: 700;
color: #1f2937;
margin-bottom: 0.5rem;
}
.subtitle {
font-size: 1rem;
color: #6b7280;
margin-bottom: 2rem;
}
.section-title {
font-size: 1.25rem;
font-weight: 600;
color: #374151;
margin-bottom: 1rem;
}
.textarea {
width: 100%;
min-height: 250px;
padding: 1rem;
border: 2px solid #d1d5db;
border-radius: 0.5rem;
font-family: 'Courier New', monospace;
font-size: 0.875rem;
resize: vertical;
transition: border-color 0.2s;
}
.textarea:focus {
outline: none;
border-color: #6366f1;
}
.button-group {
display: flex;
gap: 0.75rem;
margin-top: 1rem;
}
.button {
flex: 1;
padding: 0.75rem 1.5rem;
font-weight: 600;
border: none;
border-radius: 0.5rem;
cursor: pointer;
transition: all 0.2s;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.button-primary {
background-color: #6366f1;
color: white;
}
.button-primary:hover {
background-color: #4f46e5;
}
.button-secondary {
background-color: #9333ea;
color: white;
}
.button-secondary:hover {
background-color: #7e22ce;
}
.preview-container {
border: 2px solid #e5e7eb;
border-radius: 0.5rem;
background-color: #f9fafb;
padding: 1rem;
overflow: auto;
max-height: 600px;
}
.tip {
margin-top: 1rem;
font-size: 0.875rem;
color: #6b7280;
}
.instructions {
list-style: none;
}
.instruction-item {
display: flex;
align-items: flex-start;
margin-bottom: 0.75rem;
color: #4b5563;
}
.instruction-number {
color: #6366f1;
font-weight: 700;
margin-right: 0.5rem;
flex-shrink: 0;
}
@media (max-width: 768px) {
.container {
padding: 1rem;
}
.title {
font-size: 1.75rem;
}
.button-group {
flex-direction: column;
}
}
</style>
</head>
<body>
<div id="root"></div>
<script type="text/babel">
const { useState, useRef } = React;
const HarmonicaTabGenerator = () => {
const [input, setInput] = useState(` 4 6 -5 5 -4 4 3
6 7 -6 6 -6 6 5
4 4 4 5 5 5 5 5 -5 5 4`);
const svgRef = useRef(null);
// Parse input and add + signs to positive numbers
const parseInput = (text) => {
const lines = text.split('\n');
return lines.map(line => {
// Check if line contains tab notation (numbers with optional minus signs and spaces)
const isTabLine = /^[\s\d\-]+$/.test(line.trim()) && line.trim().length > 0;
let processedContent = line;
// If it's a tab line, add + signs to positive numbers
if (isTabLine) {
processedContent = line.replace(/(\s|^)(\d+)/g, (match, space, number) => {
return space + '+' + number;
});
}
return {
content: processedContent,
isTab: isTabLine
};
});
};
// Calculate layout (columns based on max 10 lines per column)
const calculateLayout = (parsedLines) => {
const tabLines = parsedLines.filter(l => l.isTab);
const maxLinesPerColumn = 10;
const numColumns = Math.ceil(tabLines.length / maxLinesPerColumn);
const columns = [];
let currentIndex = 0;
for (let col = 0; col < numColumns; col++) {
const columnLines = [];
let tabCount = 0;
while (currentIndex < parsedLines.length && tabCount < maxLinesPerColumn) {
const line = parsedLines[currentIndex];
columnLines.push(line);
if (line.isTab) {
tabCount++;
}
currentIndex++;
}
columns.push(columnLines);
}
return columns;
};
const parsedLines = parseInput(input);
const columns = calculateLayout(parsedLines);
// SVG dimensions and styling
const lineHeight = 40;
const fontSize = 28;
const annotationFontSize = 12;
const columnWidth = 400;
const padding = 40;
const columnGap = 60;
const maxLinesInAnyColumn = Math.max(...columns.map(col => {
return col.reduce((sum, line) => {
return sum + (line.isTab ? 1 : 0.5);
}, 0);
}), 1);
const svgWidth = columns.length * columnWidth + (columns.length - 1) * columnGap + padding * 2;
const svgHeight = maxLinesInAnyColumn * lineHeight + padding * 2;
// Export as PNG
const exportAsPNG = () => {
const svgElement = svgRef.current;
const svgData = new XMLSerializer().serializeToString(svgElement);
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
// Set canvas size (2x for better quality)
canvas.width = svgWidth * 2;
canvas.height = svgHeight * 2;
const img = new Image();
const svgBlob = new Blob([svgData], { type: 'image/svg+xml;charset=utf-8' });
const url = URL.createObjectURL(svgBlob);
img.onload = () => {
ctx.scale(2, 2);
ctx.drawImage(img, 0, 0);
URL.revokeObjectURL(url);
canvas.toBlob((blob) => {
const link = document.createElement('a');
link.download = 'harmonica-tabs.png';
link.href = URL.createObjectURL(blob);
link.click();
});
};
img.src = url;
};
// Export as SVG
const exportAsSVG = () => {
const svgElement = svgRef.current;
const svgData = new XMLSerializer().serializeToString(svgElement);
const blob = new Blob([svgData], { type: 'image/svg+xml;charset=utf-8' });
const link = document.createElement('a');
link.download = 'harmonica-tabs.svg';
link.href = URL.createObjectURL(blob);
link.click();
};
return (
<div className="gradient-bg">
<div className="container">
<h1 className="title">Harmonica Tab Generator</h1>
<p className="subtitle">Create beautiful, readable images of your harmonica tabs</p>
{/* Input Section */}
<div className="card">
<h2 className="section-title">Input Your Tabs</h2>
<textarea
value={input}
onChange={(e) => setInput(e.target.value)}
className="textarea"
placeholder="Enter your harmonica tabs here...
Example:
4 6 -5 5 -4 4 3
6 7 -6 6 -6 6 5"
/>
<div className="button-group">
<button
onClick={exportAsPNG}
className="button button-primary"
>
📥 Download PNG
</button>
<button
onClick={exportAsSVG}
className="button button-secondary"
>
📥 Download SVG
</button>
</div>
<p className="tip">
💡 Tip: Positive numbers will automatically get a + sign. Add text for annotations - they'll appear smaller.
</p>
</div>
{/* Preview Section */}
<div className="card">
<h2 className="section-title">Preview</h2>
<div className="preview-container">
<svg
ref={svgRef}
width={svgWidth}
height={svgHeight}
xmlns="http://www.w3.org/2000/svg"
style={{ background: '#ffffff', display: 'block' }}
>
{/* Background */}
<rect width={svgWidth} height={svgHeight} fill="#ffffff" />
{/* Render columns */}
{columns.map((column, colIndex) => {
let yOffset = padding;
const xOffset = padding + colIndex * (columnWidth + columnGap);
return (
<g key={colIndex}>
{column.map((line, lineIndex) => {
const currentY = yOffset;
if (line.isTab) {
// Render tab line with monospace font
yOffset += lineHeight;
return (
<text
key={lineIndex}
x={xOffset}
y={currentY}
fontFamily="'Courier New', monospace"
fontSize={fontSize}
fontWeight="600"
fill="#1f2937"
letterSpacing="2"
>
{line.content}
</text>
);
} else if (line.content.trim()) {
// Render annotation with smaller font
yOffset += lineHeight * 0.6;
return (
<text
key={lineIndex}
x={xOffset}
y={currentY}
fontFamily="Arial, sans-serif"
fontSize={annotationFontSize}
fontStyle="italic"
fill="#6b7280"
>
{line.content}
</text>
);
}
return null;
})}
</g>
);
})}
</svg>
</div>
</div>
{/* Instructions */}
<div className="card">
<h2 className="section-title">How to Use</h2>
<ul className="instructions">
<li className="instruction-item">
<span className="instruction-number">1.</span>
<span>Enter your harmonica tabs in the input field (numbers with spaces)</span>
</li>
<li className="instruction-item">
<span className="instruction-number">2.</span>
<span>Positive numbers automatically get a + sign, negative numbers keep the - sign</span>
</li>
<li className="instruction-item">
<span className="instruction-number">3.</span>
<span>Add text annotations if needed - they'll appear smaller and italicized</span>
</li>
<li className="instruction-item">
<span className="instruction-number">4.</span>
<span>Preview updates automatically - tabs are split into columns (max 10 lines per column)</span>
</li>
<li className="instruction-item">
<span className="instruction-number">5.</span>
<span>Download as PNG for sharing or SVG for editing</span>
</li>
</ul>
</div>
</div>
</div>
);
};
// Render the app
const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<HarmonicaTabGenerator />);
</script>
</body>
</html>

7
vite.config.js Normal file
View File

@@ -0,0 +1,7 @@
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
// https://vite.dev/config/
export default defineConfig({
plugins: [react()],
})