<!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" type="text/css" href="../abcjs-audio.css">
<link rel="stylesheet" href="examples-styles.css" />
<title>Output Transposition</title>
<script src="../dist/abcjs-basic.js" type="text/javascript"></script>
<script type="text/javascript">
var editor;
var renderParams = { responsive: "resize", selectTypes: false };
var outputEl;
var abcEl;
var currentAbc = ""
window.onload = function () {
abcEl = document.querySelector("#abc");
outputEl = document.querySelector("#transposed");
visualTransposeEl = document.querySelector(".transpose");
editor = new ABCJS.Editor("abc", {
canvas_id: "paper",
warnings_id: "warnings",
abcjsParams: renderParams,
});
visualTransposeEl.addEventListener("change", paramChanged);
paramChanged(false);
};
function paramChanged(userAction) {
var visualObj = editor.tunes
var abc = abcEl.value
var steps = visualTransposeEl.value
var output = ABCJS.strTranspose(abc, visualObj, steps)
outputEl.innerText = output
var newVisualObj = ABCJS.renderAbc("paper2", output, renderParams)
if (userAction)
createSynth(newVisualObj[0])
}
var synthControl
function createSynth(visualObj) {
if (!synthControl) {
synthControl = new ABCJS.synth.SynthController();
synthControl.load("#audio", null, { displayRestart: true, displayPlay: true, displayProgress: true });
}
var midiBuffer = new ABCJS.synth.CreateSynth();
midiBuffer.init({
visualObj: visualObj,
}).then(function (response) {
synthControl.setTune(visualObj, true).then(function (response) {
}).catch(function (error) {
console.warn("Audio problem:", error);
});
}).catch(function (error) {
console.warn("Audio problem:", error);
});
}
</script>
<style>
@media only screen and (min-width: 700px) {
.container {
max-width: 1200px;
}
}
.input,
.output {
display: flex;
column-gap: 10px;
}
.input>div,
.output>div {
width: 50%;
}
#abc,
#transposed {
font-family: monaco, monospace;
font-size: 1em;
height: 300px;
}
#transposed {
border: 1px solid #888;
padding: 10px;
margin-top: 0;
overflow: auto;
}
label {
margin-top: 10px;
display: block;
}
</style>
</head>
<body>
<header>
<img src="https://paulrosen.github.io/abcjs/img/abcjs_comp_extended_08.svg" alt="abcjs logo">
<h1>Output Transposition</h1>
</header>
<div class="container">
<main>
<p>This demonstrates transposing an ABC string and retrieving that transposed string. Type any valid ABC string in the "input string" area and choose your transposition in half-steps below the input string. The resultant ABC string, transposed audio, and transposed notation are shown on the right side of the page.</p>
<section class="input">
<div>
<h2>Input String</h2>
<textarea aria-label="ABC string" id="abc" spellcheck="false">
X: 1
T: Cooley's
M: 4/4
L: 1/8
R: reel
K: Em
V: Melody
|:D2|EB{c}BA B2 EB|~B2 AB dBAG|FDAD BDAD|FDAD dAFD|
EBBA B2 EB|B2 AB defg|afe^c dBAF|DEFD E2:|
|:gf|eB B2 efge|eB B2 gedB|A2 FA DAFA|A2 FA defg|
eB B2 eBgB|eB B2 defg|afe^c dBAF|DEFD E2:|
</textarea>
<label>Transpose:
<input
class="transpose"
type="number"
min="-24"
max="24"
step="1"
value="0">
</label>
</div>
<div>
<h2>Output String</h2>
<pre id="transposed"></pre>
<div id="audio"></div>
</div>
</section>
<div id="warnings"></div>
<section class="output">
<div>
<h2>Original Output</h2>
<div id="paper" class="visible-background"></div>
</div>
<div>
<h2>Transposed Output</h2>
<div id="paper2" class="visible-background"></div>
</div>
</section>
</main>
</div>
</body>
</html>