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2199 lines (1886 loc) · 74.2 KB
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Note Catcher</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
min-height: 100vh;
display: flex;
justify-content: center;
align-items: center;
padding: 20px;
}
.container {
background: white;
border-radius: 20px;
box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
padding: 40px;
max-width: 800px;
width: 100%;
}
h1 {
color: #333;
margin-bottom: 10px;
text-align: center;
}
.status {
text-align: center;
padding: 15px;
margin: 20px 0;
border-radius: 10px;
font-weight: 500;
}
.status.disconnected {
background: #fee;
color: #c33;
}
.status.connected {
background: #efe;
color: #3c3;
}
.current-note {
text-align: center;
margin: 30px 0;
}
.note-display {
font-size: 72px;
font-weight: bold;
color: #667eea;
min-height: 100px;
display: flex;
align-items: center;
justify-content: center;
background: #f8f9fa;
border-radius: 15px;
margin: 20px 0;
}
.chord-display {
font-size: 36px;
font-weight: bold;
color: #764ba2;
min-height: 60px;
display: flex;
align-items: center;
justify-content: center;
background: #f0f0ff;
border-radius: 15px;
margin: 20px 0;
}
.staff-container {
margin: 30px 0;
padding: 20px 30px 40px 30px;
background: #ffffff;
border-radius: 15px;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.staff-container h2 {
text-align: center;
color: #333;
margin-bottom: 15px;
font-size: 22px;
}
.staff-wrapper {
position: relative;
width: 100%;
height: 360px;
display: flex;
align-items: center;
justify-content: center;
padding: 40px 0 80px 0;
}
.staff-clickable-zones {
position: absolute;
width: 100%;
height: 100%;
top: 0;
left: 0;
display: flex;
flex-direction: column;
pointer-events: none;
}
.staff-note-zone {
position: absolute;
width: 100px;
height: 15px;
left: 50%;
transform: translateX(-50%);
cursor: pointer;
pointer-events: all;
z-index: 5;
}
.staff-note-zone:hover {
background: rgba(102, 126, 234, 0.2);
border-radius: 4px;
}
.staff {
position: relative;
width: 500px;
height: 300px;
margin: 0 auto;
}
.treble-staff {
position: absolute;
width: 100%;
height: 120px;
top: 0;
}
.bass-staff {
position: absolute;
width: 100%;
height: 120px;
bottom: 0;
}
.staff-line {
position: absolute;
width: 100%;
height: 2px;
background: #333;
left: 0;
}
/* Treble staff lines */
.treble-staff .staff-line:nth-child(1) { top: 0%; }
.treble-staff .staff-line:nth-child(2) { top: 25%; }
.treble-staff .staff-line:nth-child(3) { top: 50%; }
.treble-staff .staff-line:nth-child(4) { top: 75%; }
.treble-staff .staff-line:nth-child(5) { top: 100%; }
/* Bass staff lines */
.bass-staff .staff-line:nth-child(1) { top: 0%; }
.bass-staff .staff-line:nth-child(2) { top: 25%; }
.bass-staff .staff-line:nth-child(3) { top: 50%; }
.bass-staff .staff-line:nth-child(4) { top: 75%; }
.bass-staff .staff-line:nth-child(5) { top: 100%; }
.treble-clef {
position: absolute;
left: 15px;
top: 50%;
transform: translateY(-50%);
font-size: 90px;
font-weight: bold;
color: #333;
font-family: serif;
}
.bass-clef {
position: absolute;
left: 15px;
top: 50%;
transform: translateY(-50%);
font-size: 70px;
font-weight: bold;
color: #333;
font-family: serif;
}
.brace {
position: absolute;
left: 0;
top: 50%;
transform: translateY(-50%);
font-size: 280px;
color: #333;
line-height: 1;
}
.note-group {
position: absolute;
left: 50%;
top: 0;
width: 100%;
height: 100%;
transform: translateX(-50%);
}
.note-head {
position: absolute;
width: 28px;
height: 20px;
background: #333;
border-radius: 50%;
transform: translateX(-50%) rotate(-20deg);
left: 50%;
cursor: pointer;
transition: background 0.1s;
}
.note-head:hover {
background: #667eea;
}
.note-stem {
position: absolute;
width: 2px;
height: 60px;
background: #333;
left: 50%;
}
.note-stem.up {
bottom: 8px;
margin-left: 13px;
}
.note-stem.down {
top: 8px;
margin-left: -13px;
}
.ledger-line {
position: absolute;
width: 40px;
height: 2px;
background: #333;
left: 50%;
transform: translateX(-50%);
}
.note-label {
position: absolute;
left: 50%;
transform: translateX(-50%);
font-size: 18px;
font-weight: bold;
color: #667eea;
white-space: nowrap;
}
.note-label.above {
top: -35px;
}
.note-label.below {
bottom: -35px;
}
.sharp-symbol, .flat-symbol {
position: absolute;
font-size: 24px;
font-weight: bold;
color: #333;
left: -20px;
top: 50%;
transform: translateY(-50%);
}
.piano-keyboard {
display: flex;
justify-content: center;
margin: 20px 0;
padding: 20px;
background: #f8f9fa;
border-radius: 15px;
overflow-x: auto;
}
.octave {
display: flex;
position: relative;
margin: 0 2px;
}
.key {
position: relative;
border: 1px solid #000;
box-sizing: border-box;
}
.white-key {
width: 40px;
height: 150px;
background: white;
border-radius: 0 0 5px 5px;
z-index: 1;
transition: all 0.1s;
cursor: pointer;
}
.white-key:hover {
background: #f0f0f0;
}
.white-key.active {
background: linear-gradient(180deg, #667eea 0%, #5568d3 100%);
transform: translateY(2px);
}
.white-key.active:hover {
background: linear-gradient(180deg, #667eea 0%, #5568d3 100%);
}
.black-key {
width: 28px;
height: 95px;
background: #333;
position: absolute;
z-index: 2;
border-radius: 0 0 3px 3px;
transition: all 0.1s;
cursor: pointer;
}
.black-key:hover {
background: #555;
}
.black-key.active {
background: linear-gradient(180deg, #764ba2 0%, #667eea 100%);
}
.black-key.active:hover {
background: linear-gradient(180deg, #764ba2 0%, #667eea 100%);
}
.black-key.c-sharp { left: 28px; }
.black-key.d-sharp { left: 68px; }
.black-key.f-sharp { left: 148px; }
.black-key.g-sharp { left: 188px; }
.black-key.a-sharp { left: 228px; }
.key-label {
position: absolute;
bottom: 10px;
left: 50%;
transform: translateX(-50%);
font-size: 11px;
color: #666;
font-weight: 500;
opacity: 0;
transition: opacity 0.1s;
}
.white-key.active .key-label {
color: white;
opacity: 1;
}
.black-key.active .key-label {
color: white;
opacity: 1;
}
.keyboard-container {
overflow-x: auto;
}
.instruments-display {
display: flex;
flex-direction: column;
gap: 20px;
margin: 20px 0;
}
.instrument-section {
width: 100%;
}
.instrument-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 15px;
}
.instrument-header h3 {
margin: 0;
color: #555;
font-size: 18px;
}
.toggle-instrument-btn {
background: #667eea;
color: white;
border: none;
padding: 6px 12px;
border-radius: 6px;
font-size: 13px;
cursor: pointer;
transition: background 0.2s;
}
.toggle-instrument-btn:hover {
background: #5568d3;
}
.guitar-fretboard {
background: #f8f9fa;
border-radius: 15px;
padding: 20px;
overflow-x: auto;
}
.guitar-fretboard h3 {
color: #555;
margin-bottom: 15px;
font-size: 18px;
text-align: center;
}
.fretboard {
position: relative;
display: flex;
flex-direction: column;
gap: 12px;
background: #8B4513;
padding: 15px 10px;
border-radius: 8px;
min-width: 600px;
}
.guitar-string {
position: relative;
display: flex;
align-items: center;
height: 30px;
}
.string-line {
position: absolute;
width: 100%;
height: 2px;
background: #666;
left: 0;
top: 50%;
transform: translateY(-50%);
}
.string-line.thick {
height: 3px;
background: #444;
}
.fret-markers {
display: flex;
position: relative;
flex: 1;
height: 100%;
}
.fret {
flex: 1;
position: relative;
border-right: 2px solid #555;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
}
.fret:hover {
background: rgba(255, 255, 255, 0.1);
}
.fret:first-child {
position: relative;
border-right: none;
width: 10%;
}
.fret:first-child::before {
content: '';
position: absolute;
left: 50%;
top: 0;
bottom: 0;
width: 4px;
background: #333;
transform: translateX(-50%);
}
.fret-note {
width: 32px;
height: 32px;
border-radius: 50%;
background: #667eea;
border: 2px solid #fff;
z-index: 10;
position: relative;
display: none;
box-shadow: 0 2px 4px rgba(0,0,0,0.3);
align-items: center;
justify-content: center;
font-size: 10px;
font-weight: bold;
color: #fff;
}
.fret-note.active {
display: flex;
}
.fret-note.root {
background: #764ba2;
}
.fret-note.alternative {
background: #FFA500;
}
.string-label {
width: 30px;
text-align: center;
font-weight: bold;
color: #fff;
font-size: 14px;
position: relative;
z-index: 100;
}
.fret-numbers {
display: flex;
margin-top: 5px;
padding-left: 40px;
}
.fret-number {
flex: 1;
text-align: center;
font-size: 11px;
color: #666;
font-weight: bold;
}
.midi-devices {
margin: 20px 0;
padding: 20px;
background: #f8f9fa;
border-radius: 15px;
}
.midi-devices h2 {
color: #555;
margin-bottom: 15px;
font-size: 20px;
}
.device-list {
display: flex;
flex-direction: column;
gap: 10px;
}
.device-item {
display: flex;
justify-content: space-between;
align-items: center;
padding: 12px 15px;
background: white;
border-radius: 8px;
border-left: 4px solid #667eea;
}
.device-item.connected {
border-left-color: #3c3;
}
.device-item.disconnected {
border-left-color: #ccc;
opacity: 0.6;
}
.device-name {
font-weight: 500;
color: #333;
}
.device-status {
display: flex;
align-items: center;
gap: 10px;
}
.status-badge {
padding: 4px 12px;
border-radius: 12px;
font-size: 12px;
font-weight: 500;
}
.status-badge.connected {
background: #efe;
color: #3c3;
}
.status-badge.disconnected {
background: #fee;
color: #c33;
}
.device-button {
background: #667eea;
color: white;
border: none;
padding: 6px 14px;
border-radius: 6px;
font-size: 13px;
cursor: pointer;
transition: background 0.2s;
}
.device-button:hover {
background: #5568d3;
}
.device-button.disconnect {
background: #c33;
}
.device-button.disconnect:hover {
background: #a22;
}
.sound-toggle-btn {
background: #667eea;
color: white;
border: none;
padding: 12px 20px;
border-radius: 8px;
font-size: 16px;
cursor: pointer;
transition: background 0.3s;
display: inline-flex;
align-items: center;
gap: 8px;
}
.sound-toggle-btn:hover {
background: #5568d3;
}
.sound-toggle-btn.muted {
background: #999;
}
.sound-toggle-btn.muted:hover {
background: #888;
}
.note-history {
margin-top: 20px;
}
.note-history-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 15px;
}
.note-history h2 {
color: #555;
margin: 0;
font-size: 20px;
}
.toggle-history-btn {
background: #667eea;
color: white;
border: none;
padding: 8px 16px;
border-radius: 6px;
font-size: 14px;
cursor: pointer;
transition: background 0.2s;
}
.toggle-history-btn:hover {
background: #5568d3;
}
.history-list {
background: #f8f9fa;
border-radius: 10px;
padding: 20px;
max-height: 300px;
overflow-y: auto;
}
.note-item {
padding: 12px;
margin: 8px 0;
background: white;
border-radius: 8px;
display: flex;
justify-content: space-between;
align-items: center;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
animation: slideIn 0.3s ease;
}
@keyframes slideIn {
from {
opacity: 0;
transform: translateX(-20px);
}
to {
opacity: 1;
transform: translateX(0);
}
}
.note-name {
font-size: 24px;
font-weight: bold;
color: #667eea;
}
.note-info {
font-size: 14px;
color: #666;
}
.midi-info {
margin-top: 20px;
padding: 15px;
background: #f0f0f0;
border-radius: 10px;
font-size: 14px;
color: #666;
}
button {
background: #667eea;
color: white;
border: none;
padding: 12px 24px;
border-radius: 8px;
font-size: 16px;
cursor: pointer;
margin: 10px auto;
display: block;
transition: background 0.3s;
}
button:hover {
background: #5568d3;
}
button:disabled {
background: #ccc;
cursor: not-allowed;
}
.button-group {
display: flex;
flex-wrap: wrap;
gap: 10px;
justify-content: center;
margin: 10px 0;
}
.button-group button {
margin: 0;
flex-shrink: 0;
}
/* Responsive styles for smaller screens */
@media (max-width: 768px) {
.button-group {
gap: 8px;
}
.button-group button {
font-size: 14px;
padding: 10px 16px;
}
}
@media (max-width: 480px) {
.button-group button {
font-size: 13px;
padding: 8px 12px;
min-width: fit-content;
}
}
</style>
</head>
<body>
<div class="container">
<h1>Note Catcher</h1>
<div id="status" class="status disconnected">
No MIDI device connected
</div>
<div class="button-group">
<button id="connectBtn">Connect MIDI Device</button>
<button id="toggleDevicesBtn" style="display: none;">Manage Devices</button>
<button id="toggleStaffBtn" class="toggle-instrument-btn">Hide Staff</button>
<button id="togglePianoBtn" class="toggle-instrument-btn">Hide Piano</button>
<button id="toggleGuitarBtn" class="toggle-instrument-btn">Hide Guitar</button>
<button id="toggleGuitarModeBtn" class="toggle-instrument-btn">First Position</button>
<button id="soundToggleBtn" class="sound-toggle-btn">
<span id="soundIcon">🔊</span>
<span>Sound On</span>
</button>
</div>
<div class="midi-devices" id="midiDevicesSection" style="display: none;">
<h2>MIDI Input Devices</h2>
<div id="deviceList" class="device-list"></div>
</div>
<div class="staff-container">
<div style="text-align: center; margin-bottom: 15px;">
<div id="staffLabel" style="font-size: 28px; font-weight: bold; color: #667eea; min-height: 32px;">
Press a key...
</div>
</div>
<div class="staff-wrapper">
<div id="musicalStaff" class="staff">
<div class="brace">{</div>
<div class="treble-staff">
<div class="staff-line"></div>
<div class="staff-line"></div>
<div class="staff-line"></div>
<div class="staff-line"></div>
<div class="staff-line"></div>
<div class="treble-clef">𝄞</div>
</div>
<div class="bass-staff">
<div class="staff-line"></div>
<div class="staff-line"></div>
<div class="staff-line"></div>
<div class="staff-line"></div>
<div class="staff-line"></div>
<div class="bass-clef">𝄢</div>
</div>
<div id="noteGroup" class="note-group"></div>
</div>
</div>
<!-- Hidden element for compatibility with displayNote function -->
<div id="noteDisplay" style="display: none;"></div>
</div>
<div class="current-note">
<h2>Chord Detection</h2>
<div id="chordDisplay" class="chord-display">
-
</div>
<div class="instruments-display">
<div class="instrument-section">
<h3 style="text-align: center; color: #555; margin-bottom: 15px; font-size: 18px;">Piano</h3>
<div id="pianoContainer" class="keyboard-container">
<div id="pianoKeyboard" class="piano-keyboard"></div>
</div>
</div>
<div class="instrument-section">
<div class="guitar-fretboard">
<h3>Guitar (Standard Tuning)</h3>
<div id="guitarFretboard"></div>
</div>
</div>
</div>
</div>
<div class="note-history">
<div class="note-history-header">
<h2>Note History</h2>
<button id="toggleHistoryBtn" class="toggle-history-btn">Show History</button>
</div>
<div id="historyList" class="history-list" style="display: none;">
<p style="text-align: center; color: #999;">No notes played yet</p>
</div>
</div>
<div class="midi-info">
<strong>How to use:</strong> Click "Connect MIDI Device", select your MIDI keyboard from the list, and start playing!
Your browser must support Web MIDI API (Chrome, Edge, Opera).
</div>
</div>
<script>
// MIDI note number to note name mapping
const noteNames = ['C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B'];
function midiNoteToName(midiNote) {
const octave = Math.floor(midiNote / 12) - 1;
const noteName = noteNames[midiNote % 12];
return `${noteName}${octave}`;
}
let midiAccess = null;
let noteHistory = [];
let activeNotes = new Set(); // Track currently pressed notes
let connectedInputs = new Map(); // Track which inputs are actively connected
const statusEl = document.getElementById('status');
const noteDisplayEl = document.getElementById('noteDisplay');
const chordDisplayEl = document.getElementById('chordDisplay');
const pianoKeyboardEl = document.getElementById('pianoKeyboard');
const historyListEl = document.getElementById('historyList');
const connectBtn = document.getElementById('connectBtn');
const toggleDevicesBtn = document.getElementById('toggleDevicesBtn');
const toggleHistoryBtn = document.getElementById('toggleHistoryBtn');
const midiDevicesSectionEl = document.getElementById('midiDevicesSection');
const deviceListEl = document.getElementById('deviceList');
const noteGroupEl = document.getElementById('noteGroup');
const staffLabelEl = document.getElementById('staffLabel');
const guitarFretboardEl = document.getElementById('guitarFretboard');
const pianoContainerEl = document.getElementById('pianoContainer');
const togglePianoBtn = document.getElementById('togglePianoBtn');
const toggleGuitarBtn = document.getElementById('toggleGuitarBtn');
const toggleStaffBtn = document.getElementById('toggleStaffBtn');
const staffContainerEl = document.querySelector('.staff-container');
const toggleGuitarModeBtn = document.getElementById('toggleGuitarModeBtn');
// Load guitar display mode from localStorage (default: 'first')
let guitarDisplayMode = localStorage.getItem('guitarDisplayMode') || 'first';
// Web Audio API setup
let audioContext = null;
let activeOscillators = new Map(); // Track playing notes
// Load mute preference from localStorage
let isMuted = localStorage.getItem('midiSoundMuted') === 'true';
function initAudio() {
if (!audioContext) {
audioContext = new (window.AudioContext || window.webkitAudioContext)();
}
}
function midiNoteToFrequency(midiNote) {
// Convert MIDI note number to frequency in Hz
// A4 (MIDI note 69) = 440 Hz
return 440 * Math.pow(2, (midiNote - 69) / 12);
}
function playNote(midiNote, velocity) {
// Exit early if sound is muted
if (isMuted) return;
initAudio();
// If note is already playing, stop it first before starting a new one
if (activeOscillators.has(midiNote)) {
stopNote(midiNote);
}
const frequency = midiNoteToFrequency(midiNote);
const velocityGain = velocity / 127; // Normalize velocity to 0-1
// Create oscillators for a richer piano-like sound
const oscillator1 = audioContext.createOscillator();
const oscillator2 = audioContext.createOscillator();
const oscillator3 = audioContext.createOscillator();
// Main tone
oscillator1.type = 'triangle';