ioying.github.io/index.html at main · ioying/ioying.github.io · GitHub

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<!DOCTYPE html>

<html lang="en">

  <head>

    <meta charset="utf-8" />
    <link rel="stylesheet" href="css/style.css" />
    <link rel="stylesheet" type="text/css" href="css/abcjs-audio.css">
    <title>Piano Trainer</title>

    <script src="js/webmidi.iife.min.js"></script>
    <script src="js/abcjs-basic-min.js" type="text/javascript"></script>
    <script src="js/keymap.js"></script>
    <script src="js/synth.js"></script>
    <script src="js/lesson.js"></script>
    <script>
      window.onload = function(){
      //initEditor()
      };

      /*
        midiPitches: [ {"cmd": "note","pitch": 67,"volume": 105,"start": 0,"duration": 0.125,"instrument": 0,"startChar": 84,"endChar": 89,"gap": 0},
                       {"cmd": "note","pitch": 79,"volume": 105,"start": 0,"duration": 0.125,"instrument": 0,"startChar": 84,"endChar": 89,"gap": 0}]
      */
      function showOnkeyBoard(midiPitch, type="click"){
          midiPitch.forEach((Pitch) => {
            let duration = Pitch.duration*1000;
            if (type == "click") { duration = Pitch.duration*1000 * 10}
            document.getElementById(`${Pitch.pitch}`).classList.add("active");
            setTimeout(() => {
                document.getElementById(`${Pitch.pitch}`).classList.remove('active');
            }, duration);
          });
      }
      function showABC(){
          if (abc_note.style.display=='none'){
              abc_note.style.display='';
          } else {
              abc_note.style.display='none';
          }
      }
      function showFeedback(){
          if (clicked_info.style.display=='none'){
              clicked_info.style.display='';
              feedback.style.display='';
              keys.style.display='';
              beat.style.display='';
              chords.style.display='';
          } else {
              clicked_info.style.display='none';
              feedback.style.display='none';
              keys.style.display='none';
              beat.style.display='none';
              chords.style.display='none';
          }
      }
      // Compare the notes played on a MIDI keyboard with the sheet music to determine the accuracy of the number of notes and their respective durations.
      // generated by cursor, being testing
      function compare(){
          let midiPitches = lesson.getNotes();
          let abcPitches = lesson.getABCNotes();
          let correct = true;
          if (midiPitches.length !== abcPitches.length) {
              correct = false;
          } else {
              for (let i = 0; i < midiPitches.length; i++) {
                  if (midiPitches[i].pitch !== abcPitches[i].pitch || midiPitches[i].duration !== abcPitches[i].duration) {
                      correct = false;
                      break;
                  }
              }
          }
          if (correct) {
              alert("You played the correct notes and durations!");
          } else {
              alert("You played the wrong notes or durations. Please try again.");
          }
       }

    </script>
    <script type="module">
      //https://webmidijs.org/api/classes/InputChannel#event:noteon
      import Keyboard from "./js/kb.js";
      let k = new Keyboard();
      piano.appendChild(k.node);

      function playNotes(pl){
        ABCJS.synth.playEvent(pl,undefined,1333);
      }

      function setKeyEvent(){
        document.querySelectorAll(".key").forEach(key=>{
            key.addEventListener("mousedown", () => {
                key.classList.add("active");
                //console.log('mousedown:',key)
                let pl=[{"cmd": "note","pitch": `${key.getAttribute('id')}`,"volume": 95,"start": 28,"duration": 0.125,"instrument": 0,"startChar": 188,"endChar": 189, "gap": 0}]
                playNotes(pl);
            });
            key.addEventListener("mouseup", () => {
                key.classList.remove("active");
            });
            key.addEventListener("mouseout", () => {
                key.classList.remove("active");
            });
        });
      }


      WebMidi
        .enable()
        .then(onEnabled)
        .then(setKeyEvent())
        .then(initEditor())
        .catch(err => console.log(err));

      function onEnabled() {
        var notes=""
        var holdPedal=false
        if (WebMidi.inputs.length < 1) {
            mididevice.innerHTML  = "No device detected.";
        } else {
            WebMidi.inputs.forEach((device, index) => {
                mididevice.innerHTML = `${index}: ${device.name} `;
            });
        }

        const mySynth = WebMidi.inputs[0];
        // const mySynth = WebMidi.getInputByName("TYPE NAME HERE!")

        mySynth.channels[1].addListener("noteon", e => {
          notes +=`<span style="font-size: ${e.rawVelocity}px\"> ${e.note.identifier}:${e.note.number}  </span>`;
          keys.innerHTML = notes;
          document.getElementById(`${e.note.number}`).classList.add(`level${Math.ceil(e.rawVelocity/22)}`)
          document.getElementById(`${e.note.number}`).classList.add("active");
        });
        mySynth.channels[1].addListener("noteoff", e => {
          notes = ""
          if (holdPedal) {
            document.getElementById(`${e.note.number}`).setAttribute('waitped','yes');
          } else {
            document.getElementById(`${e.note.number}`).classList.remove("active", "level1", "level2","level3","level4","level5","level6");
          }
        });
        mySynth.channels[1].addListener("controlchange", e => {
            if(e.controller.number == 64) {
                if(e.value > 0) {
                    holdPedal= true;
                    pedal.innerHTML = `↑ Ped *`;
                } else {
                    holdPedal = false;
                    pedal.innerHTML = `↓ Ped`;
                    document.querySelectorAll("li[waitped='yes']").forEach(key=>{
                        key.setAttribute('waitped','no');
                        key.classList.remove("active", "level1", "level2","level3","level4","level5","level6");
                    });
                }
            }
        });
        document.querySelectorAll(".key").forEach(key=>{
            key.addEventListener("mousedown", () => {
            key.classList.add("active");
            });
        });
      }

    </script>

  </head>

  <body>
      <div class="container">
    <main>

      <div>
        <button class="start">Start/Pause</button>
        <button class="warp">Rand. Warp</button>
        <button class="next">Next Demo</button>
        <button class="rand">Start from level:</button>
        <button class="start" style="display:none;">DEF</button>
        <select class="select" id='diffSet'>
          <option value ="1">difficulty:1</option>
          <option value ="2">difficulty:2</option>
          <option value="3">difficulty:3</option>
          <option value="4">difficulty:4</option>
        </select>
        <select class="select" id='diffQquantity'>
          <option value ="4">quantity:4</option>
          <option value ="8" selected>quantity:8</option>
          <option value="12">quantity:12</option>

        </select>
      </div>
      <div>
        <input type="checkbox" name="show ABC editor" value="abcEedit" checked  onclick="showABC()">show ABC editor
        <input type="checkbox" name="show now play feedback" value="playFeedback"  onclick="showFeedback()"> show feedback
        <!--input type="checkbox" name="show midiKeyboard input " value="midiInput" >
        <input type="checkbox" name="show now select note info" value="selectNote" -->
      </div>
      <div>
        <p style="display: inline-block";>Speed: <span id='nowspeed'>100</span>%</p>
        <input type="range" min="1" max="100" value="100" class="slider" id="setSpeed">
        <p style="display: inline-block";>Midi device: <span id="mididevice">None</span></p>
        <a href="https://editor.drawthedots.com/" target="_blank"> Editor </a>
      </div>

      <!-- button class="seek">Seek to Middle</button>
      <button class="next">Next Tune</button>
        <button class="download" style="display: none;">Download</button>
        <div class="seek-controls disabled">
            <label>Seek: <input type="number" min="0" id="seek-amount"></label>
            <select aria-label="seek units" id="seek-units">
                <option value="percent">Percent</option>
                <option value="seconds">Seconds</option>
                <option value="beats">Beats</option>
            </select>
            <button class="seek2">Seek</button>
            <span id="unit-explanation" class="click-explanation">First start playing to load audio before seeking.</span>
        </div -->
        <textarea id="abc_note" cols="90" rows="10" spellcheck="false">
X: 1
T: Goldberg_Variations VARIATIO 19  a 1 Clav.
M: 4/4
L: 1/8
R: Bach
K: Emin
|: [Gg]fgd Bded |$ ecAc dcde  | dcBA BcBA | $ fefd Adgf  | gdBd e^deg |
    </textarea>
      <div class="midi" style="display:none;">MIDI</div>
      <div id="paper"></div>
      <div id="audio"></div>
      <p class="beat" id="beat" style="display:none;"></p>
      <p class="click-explanation" style="display:none;">Click on a note to play that note.</p>
    </main>
  </div>
    <div id="mididevice1" style="display:none;"></div>
    <div id="piano"></div>
    <div id="chords" style="display:none;"></div>
    <div id="pedal">↑ Ped *</div>
    <div id="keys" style="display:none;"></div>
    <pre class="clicked-info" id="clicked_info" style="display:none;"></pre>
    <pre class="feedback" id="feedback" style="display:none;"></pre>
   <a href="https://github.com/ioying/ioying.github.io">ioying@github</a>
  </body>

</html>