Launcpad_Mini_Key_Mapper/index.html at main · JesseHoekema/Launcpad_Mini_Key_Mapper · GitHub

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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>Launchpad Sound Mapper</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      background-color: #121212;
      color: white;
      text-align: center;
      padding: 20px;
    }
    #midi-keys {
      display: grid;
      grid-template-columns: repeat(80, 50px);
      grid-gap: 5px;
      justify-content: center;
      margin-top: 20px;
    }
    .key {
      width: 50px;
      height: 50px;
      background-color: #444;
      border: 1px solid #666;
      border-radius: 5px;
      line-height: 50px;
      text-align: center;
      color: white;
    }
    .key.active {
      background-color: #935AF6;
    }
    .key.assigned {
      background-color: #3BA55C;
    }
    #audio-list {
      margin-top: 20px;
      max-width: 500px;
      margin-left: auto;
      margin-right: auto;
      background: #1c1c1c;
      padding: 15px;
      border-radius: 8px;
    }
    .audio-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
      background: #444;
      padding: 5px 10px;
      border-radius: 5px;
    }
    .audio-item button {
      margin-left: 5px;
      background: #935AF6;
      color: white;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      padding: 5px;
    }
    .audio-item button.delete {
      background: #FF4C4C;
    }
  </style>
</head>
<body>
  <h1>Launchpad Sound Mapper</h1>
  <div id="midi-keys" style="display: none;">
    <!-- Visualisatie van toetsen -->
    <div class="key" id="key-36">36</div>
    <div class="key" id="key-37">37</div>
    <!-- Voeg meer toetsen toe hier -->
  </div>
  <div>
    <p>Selected Key: <span id="selected-key">Nothing</span></p>
    <input type="file" id="file-input" accept="audio/*">
  </div>
  <div id="audio-list">
    <h3>Uploaded Audio's</h3>
    <div id="audio-items"></div>
  </div>
  <p id="status">Status: Not Connected</p>
  <script>
  const keys = document.querySelectorAll('.key');
const statusDisplay = document.getElementById('status');
const selectedKeyDisplay = document.getElementById('selected-key');
const fileInput = document.getElementById('file-input');
const audioList = document.getElementById('audio-items');

let keySounds = JSON.parse(localStorage.getItem('keySounds')) || {}; // Geluiden opgeslagen per toets
let keySettings = JSON.parse(localStorage.getItem('keySettings')) || {}; // Modus opgeslagen per toets
let activeAudios = {}; // Huidig actieve audios bijhouden
let selectedKey = null;
let midiOutput = null;

// Initialiseer knoppen en audios
function initialize() {
  Object.keys(keySounds).forEach((key) => {
    lightUpKeyPermanently(parseInt(key));
    addAudioToList(key, keySounds[key].name);
  });
}
initialize();

// Controleer of Web MIDI API beschikbaar is
if (navigator.requestMIDIAccess) {
  navigator.requestMIDIAccess().then(onMIDISuccess, onMIDIFailure);
} else {
  alert('Web MIDI API wordt niet ondersteund in deze browser.');
}

// Callback voor succesvolle toegang tot MIDI
function onMIDISuccess(midiAccess) {
  statusDisplay.textContent = 'Status: Connected';
  const inputs = midiAccess.inputs.values();
  const outputs = midiAccess.outputs.values();

  for (let output of outputs) {
    midiOutput = output;
    break;
  }

  for (let input of inputs) {
    input.onmidimessage = onMIDIMessage;
  }
}

// Callback voor mislukte toegang tot MIDI
function onMIDIFailure() {
  statusDisplay.textContent = 'Status: Unable to access MIDI devices.';
}

// Verwerk MIDI-berichten
function onMIDIMessage(message) {
  const [status, key, velocity] = message.data;

  if (status === 144 && velocity > 0) { // Note On
    if (keySounds[key]) {
      playSound(key);
    } else {
      selectKey(key);
    }
  }
}

// Selecteer een toets
function selectKey(key) {
  selectedKey = key;
  selectedKeyDisplay.textContent = key;
}

// Upload geluid en koppel aan toets
fileInput.addEventListener('change', (event) => {
  if (selectedKey === null) {
    alert('First select a key by pressing it.');
    return;
  }

  const file = event.target.files[0];
  if (file) {
    const url = URL.createObjectURL(file);
    keySounds[selectedKey] = { url, name: file.name };
    keySettings[selectedKey] = keySettings[selectedKey] || { mode: 'overlap' };
    localStorage.setItem('keySounds', JSON.stringify(keySounds));
    localStorage.setItem('keySettings', JSON.stringify(keySettings));
    addAudioToList(selectedKey, file.name);
    lightUpKeyPermanently(selectedKey);
    alert(`Sound linked to key ${selectedKey}`);
  }
});

// Voeg geluid toe aan lijst
function addAudioToList(key, name) {
  const item = document.createElement('div');
  item.classList.add('audio-item');
  item.innerHTML = `
    <span>Key ${key}: ${name}</span>
    <select class="mode-select">
      <option value="overlap">Repeat</option>
      <option value="start-stop">Start/Stop</option>
    </select>
    <button class="reassign">Reassign</button>
    <button class="delete">Delete</button>
  `;
  const modeSelect = item.querySelector('.mode-select');
  modeSelect.value = keySettings[key]?.mode || 'overlap';
  modeSelect.addEventListener('change', () => updateMode(key, modeSelect.value));
  item.querySelector('.reassign').addEventListener('click', () => reassignKey(key));
  item.querySelector('.delete').addEventListener('click', () => deleteKey(key, item));
  audioList.appendChild(item);
}

// Update de modus van een toets
function updateMode(key, mode) {
  keySettings[key].mode = mode;
  localStorage.setItem('keySettings', JSON.stringify(keySettings));
}

// Hertoewijs een toets
function reassignKey(key) {
  selectedKey = key;
  selectedKeyDisplay.textContent = key;
  alert(`Key ${key} selected to reassign a sound.`);
}

// Verwijder een toets
function deleteKey(key, item) {
  delete keySounds[key];
  delete keySettings[key];
  localStorage.setItem('keySounds', JSON.stringify(keySounds));
  localStorage.setItem('keySettings', JSON.stringify(keySettings));
  stopLight(key);
  audioList.removeChild(item);
}

// Speel geluid af
function playSound(key) {
  const mode = keySettings[key]?.mode || 'overlap';

  if (mode === 'overlap') {
    // Herhaalmodus: speel geluid opnieuw af, ook als het al speelt
    const audio = new Audio(keySounds[key].url);
    audio.play();
  } else if (mode === 'start-stop') {
    // Start/Stop-modus: speel af of stop geluid
    if (activeAudios[key]) {
      activeAudios[key].pause();
      activeAudios[key].currentTime = 0;
      delete activeAudios[key];
    } else {
      const audio = new Audio(keySounds[key].url);
      audio.play();
      activeAudios[key] = audio;

      // Verwijder uit actieve lijst wanneer het geluid klaar is
      audio.addEventListener('ended', () => {
        delete activeAudios[key];
      });
    }
  }
}

// Verlicht toets permanent op de Launchpad
function lightUpKeyPermanently(key) {
  if (midiOutput) {
    midiOutput.send([144, key, 60]);
  }
}

// Zet het licht van een toets uit
function stopLight(key) {
  if (midiOutput) {
    midiOutput.send([128, key, 0]);
  }
}


  </script>
</body>
</html>