| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8"> |
| <meta http-equiv="x-ua-compatible" content="ie=edge"> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <link rel="icon" href="favicon.ico" type="image/x-icon"/> |
| <link rel="stylesheet" href="examples-styles.css"/> |
|
|
| <title>abcjs: Basic Demo</title> |
|
|
| <link rel="stylesheet" type="text/css" href="../abcjs-audio.css"> |
| <script src="../dist/abcjs-basic.js" type="text/javascript"></script> |
| <style> |
| #audio { |
| margin-top: 20px; |
| max-width: 760px; |
| } |
| </style> |
| <script type="text/javascript"> |
| var abc = "T: Cooley's\n" + |
| "M: 4/4\n" + |
| "L: 1/8\n" + |
| "R: reel\n" + |
| "K: Emin\n" + |
| "|:D2|EB{c}BA B2 EB|~B2 AB dBAG|FDAD BDAD|FDAD dAFD|\n" + |
| "EBBA B2 EB|B2 AB defg|afe^c dBAF|DEFD E2:|\n" + |
| "|:gf|eB B2 efge|eB B2 gedB|A2 FA DAFA|A2 FA defg|\n" + |
| "eB B2 eBgB|eB B2 defg|afe^c dBAF|DEFD E2:|"; |
| |
| function load() { |
| |
| var showPlayer = document.querySelector('#show-player'); |
| var transposeHalfSteps = document.querySelector(".transpose-half-steps"); |
| var transposeVisual = document.querySelector(".transpose-visual"); |
| var transposeAudio = document.querySelector(".transpose-audio"); |
| var visualObj = ABCJS.renderAbc("paper", abc); |
| var createSynth; |
| var synthControl; |
| |
| |
| showPlayer.addEventListener('click', () => { |
| |
| if (ABCJS.synth.supportsAudio()){ |
| createSynth = new ABCJS.synth.CreateSynth(); |
| synthControl = new ABCJS.synth.SynthController(); |
| |
| |
| createSynth.init({ visualObj: visualObj[0] }).then(function() { |
| redraw(); |
| }); |
| |
| |
| var cursorControl = null; |
| synthControl.load('#audio', cursorControl, { |
| displayRestart: true, |
| displayPlay: true, |
| displayProgress: true, |
| }); |
| } |
| else { |
| document.querySelector('#audio').innerHTML = 'Audio is not supported in this browser.' |
| } |
| |
| showPlayer.style.display = 'none'; |
| }); |
| function redraw() { |
| |
| var transposeBy = transposeHalfSteps.value; |
| var doVisual = transposeVisual.checked ? transposeBy : 0; |
| var doAudio = transposeAudio.checked ? transposeBy : 0; |
| |
| visualObj = ABCJS.renderAbc("paper", abc, { |
| visualTranspose: doVisual |
| }); |
| if(createSynth && synthControl) { |
| |
| synthControl.setTune(visualObj[0], true, { midiTranspose: doAudio }) |
| .then(function(){ |
| console.log('Audio successfully loaded.') |
| }).catch(function(error) { |
| console.warn('Audio problem: ', error); |
| }); |
| } |
| } |
| |
| transposeHalfSteps.addEventListener("change", function() { |
| redraw(); |
| }); |
| transposeVisual.addEventListener("change", function() { |
| redraw(); |
| }); |
| transposeAudio.addEventListener("change", function() { |
| redraw(); |
| }); |
| } |
| |
| </script> |
| </head> |
| <body onload="load()"> |
| <header> |
| <img src="https://paulrosen.github.io/abcjs/img/abcjs_comp_extended_08.svg" alt="abcjs logo"> |
| <h1>Basic Transposition</h1> |
| </header> |
| <div class="container"> |
| <p>This transposes either/both the visual music and the synth.</p> |
| <label>Transpose half-steps: <input class="transpose-half-steps" type="number" min="-24" max="24" step="1" value="0"></label> |
| <label><input type="checkbox" class="transpose-visual" checked>Visual?</label> |
| <label><input type="checkbox" class="transpose-audio" checked>Audio?</label> |
| <button id="show-player">Show Audio Player</button> |
| <div id="audio"></div> |
| <div id="warnings"></div> |
| <div id="paper"></div> |
| </div> |
| </body> |
| </html> |
|
|
