flat-embed
Advanced tools
Use this JavaScript Client to interact and receive events from our Sheet Music Embed.
If you have any feedback or questions regarding this product, please feel free to contact our developers support.
You can install our Embed Client using npm or yarn:
npm install flat-embed
yarn add flat-embed
Or use the latest version hosted on our CDN:
<script src="https://prod.flat-cdn.com/embed-js/v1.0.0/embed.min.js"></script>
The simplest way to get started is to pass a DOM element to our embed that will be used as container. By default, this one will completely fit its container:
<div id="embed-container"></div>
<script src="https://prod.flat-cdn.com/embed-js/v1.0.0/embed.min.js"></script>
<script>
var container = document.getElementById('embed-container');
var embed = new Flat.Embed(container, {
score: '<score-id-you-want-to-load>',
embedParams: {
appId: '<your-app-id>',
controlsPosition: 'bottom',
}
});
</script>
Our Embed JS API requires an App ID (appId) to use it:
localhost/*.localhost.When instantiating Flat.Embed, the first argument will always refer to a DOM element. It can take:
document.getElementById('embed-container'))."embed-container").$('#embed-container')). If multiple elements match the selection, the client will take the first one selected.jsapi=true.If you instance different Flat.Embed for the same element, you will always get the same instance of the object.
When instantiating Flat.Embed, you can pass options in the second parameter. In order to use the different methods available and events subscriptions, you will need to pass at least embedParams.appId.
| Option | Description | Values | Default |
|---|---|---|---|
score | The score identifier that will load initially | Unique score id | blank |
width | The width of your embed | A width of the embed | 100% |
height | The height of your embed | A height of the embed | 100% |
embedParams | Object containing the loading options for the embed | Any URL parameters | {} |
ready: Wait until the JavaScript is readyon: Subscribe to eventsoff: Unsubscribe from eventsgetEmbedConfig: Get the global config of the embedloadFlatScore: Load a score hosted on FlatloadMusicXML: Load MusicXML file (compressed or not)loadJSON: Load Flat JSON filegetMusicXML: Get the score in MusicXML (compressed or not)getJSON: Get the score data in Flat JSON formatgetPNG: Get the score as a PNG filegetMIDI: Get the score as a MIDI filegetScoreMeta: Get the metadata from the current score (for hosted scores)fullscreen: Toggle fullscreen modeplay: Start playbackpause: Pause playbackstop: Stop playbackmute: Mute playbackprint: Print the scoregetZoom: Get the current display zoom ratiosetZoom: Change the display zoom ratiogetAutoZoom: Get the state of the auto-zoom modesetAutoZoom: Enable or disable the auto-zoom modefocusScore: Set the focus to the scoregetCursorPosition: Get the current cursor position of the scoresetCursorPosition: Set a new position for the cursorscoreLoaded: A new score has been loadedcursorPosition: The cursor position changedrangeSelection: The range selected changedfullscreen: The fullscreen state changedplay: The score playback startedpause: The score playback pausedstop: The score playback stoppedplaybackPosition: The playback slider position changedYou can call the methods using any Flat.Embed object. By default, the methods (except on and off) return a Promise that will be resolved once the method is called, the value is set or get:
var embed = new Flat.Embed('container');
embed.loadFlatScore('12234').then(function () {
console.log('Score loaded');
}).catch(function (err) {
console.log('Error', err);
});
ready(): Promise<void, Error>Promises resolved when the embed is loaded and the JavaScript API is ready to use. All the methods will implicitly use this method, so you don't have to worry about waiting the loading before calling the different methods.
embed.ready().then(function() {
// You can use the embed
});
on(event: string, callback: function): voidAdd an event listener for the specified event. When receiving the event, the client will call the specified function with zero or one parameters depending of the event received.
embed.on('playbackPosition', function (position) {
console.log(position);
});
off(event: string, callback?: function): voidRemove an event listener for the specified event. If no callback is specified, all the listener for the event will be removed.
function positionChanged(position) {
// Print position
console.log(position);
// You can remove the listener later (e.g. here, once the first event is received)
embed.off('play', positionChanged);
// Alternatively, you can remove all the listeners for the event:
embed.off('play');
};
// Subscribe to the event
embed.on('positionChanged', positionChanged);
getEmbedConfig(): Promise<object, Error>Fetch the global config of the embed. This will include the URL parameters, the editor config and the default config set by the embed.
embed.getEmbedConfig().then(function (config) {
// The config of the embed
console.log(config);
});
loadFlatScore(id: string): Promise<void, ApiError>Load a score hosted on Flat using its identifier. For example to load https://flat.io/score/56ae21579a127715a02901a6-house-of-the-rising-sun, you can call:
embed.loadFlatScore('56ae21579a127715a02901a6').then(function () {
// Score loaded in the embed
}).catch(function (error) {
// Unable to load the score
});
loadMusicXML(score: mixed): Promise<void, Error>Load a MusicXML score, compressed (MXL) or not (plain XML):
fetch('https://api.flat.io/v2/scores/56ae21579a127715a02901a6/revisions/last/mxl')
.then(function (response) {
return response.arrayBuffer();
})
.then(function (mxl) {
return embed.loadMusicXML(mxl);
})
.then(function () {
// Score loaded in the embed
})
.catch(function (error) {
// Unable to load the score
});
loadJSON(score: object): Promise<void, Error>Load a score using Flat's JSON Format
fetch('https://api.flat.io/v2/scores/56ae21579a127715a02901a6/revisions/last/json')
.then(function (response) {
return response.json();
})
.then(function (json) {
return embed.loadJSON(json);
})
.then(function () {
// Score loaded in the embed
})
.catch(function (error) {
// Unable to load the score
});
getMusicXML(options?: object): Promise<string|Uint8Array, Error>Convert the current displayed score into a MusicXML file, compressed (.mxl) or not (.xml).
// Uncompressed MusicXML
embed.getMusicXML().then(function (xml) {
// Plain XML file (string)
console.log(xml);
});
Example: Retrieve the score as a compressed MusicXML, then convert it to a Blob and download it:
// Uncompressed MusicXML
embed.getMusicXML({ compressed: true }).then(function (buffer) {
// Create a Blob from a compressed MusicXML file (Uint8Array)
var blobUrl = window.URL.createObjectURL(new Blob([buffer], {
type: 'application/vnd.recordare.musicxml+xml'
}));
// Create a hidden link to download the blob
var a = document.createElement('a');
a.href = blobUrl;
a.download = 'My Music Score.mxl';
document.body.appendChild(a);
a.style = 'display: none';
a.click();
a.remove();
});
getJSON(): objectGet the data of the score in the "Flat JSON" format (a MusicXML-like as a JavaScript object).
embed.getJSON().then(function (data) {
console.log(data);
}).catch(function (error) {
// Unable to get the data
});
getPNG(options?: object): Promise<string|Uint8Array, Error>Get the current displayed score as a PNG file
// PNG
embed.getPNG().then(function (png) {
// PNG file as a Uint8Array
console.log(png);
});
// PNG
embed.getPNG({result: 'dataURL'}).then(function (png) {
// PNG file as a DataURL
console.log(png);
});
getMIDI(): Promise<Uint8Array, Error>Get the current displayed score as a MIDI file
embed.getMIDI().then(function (midi) {
// MIDI file as a Uint8Array
console.log(midi);
});
getScoreMeta(): objectGet the score metadata of the hosted score. The object will have the same format that the one returned by our API GET /v2/scores/{score}.
embed.getScoreMeta().then(function (metadata) {
console.log(metadata);
}).catch(function (error) {
// Unable to get the metadata
});
fullscreen(state: bool): Promise<void, Error>Display the embed in fullscreen (state = true) or return to the regular display (state = false).
embed.fullscreen(true).then(function () {
// The score is now displayed in fullscreen
});
play(): Promise<void, Error>Load the playback and play the score.
embed.play().then(function () {
// The score is playing
});
pause(): Promise<void, Error>Pause the playback
embed.pause().then(function () {
// The playback is paused
});
stop(): Promise<void, Error>Stop the playback
embed.stop().then(function () {
// The playback is stopped
});
mute(): Promise<void, Error>Mute the playback
embed.mute().then(function () {
// The playback is muted
});
print(): Promise<void, Error>Print the score
embed.print().then(function () {
// The score is being printed (the browser opens the print prompt)
}).catch(function (error) {
// Error when printing
});
getZoom(): Promise<number, Error>Get the current zoom ration applied for the score (between 0.5 and 3).
embed.getZoom().then(function (zoom) {
// The zoom value
console.log(zoom);
});
setZoom(number): Promise<number, Error>Set a new zoom ration for the display (between 0.5 and 3).
embed.setZoom(2).then(function (zoom) {
// The zoom value applied
console.log(zoom);
});
getAutoZoom(): Promise(<boolean, Error>)Get the state of the auto-zoom mode. Auto-zoom is enabled by default for page mode or when the URL parameter zoom is set to auto.
This getter will return true if the auto-zoom is enabled, and false when disabled. Setting a zoom value with setZoom will disable this mode.
embed.getAutoZoom().then(function (state) {
// The auto-zoom state
console.log(state);
});
setAutoZoom(boolean): Promise(<boolean, Error>)Enable (true) or disable (false) the auto-zoom. Auto-zoom is enabled by default for page mode or when the URL parameter zoom is set to auto. Setting a zoom value with setZoom will disable this mode.
embed.setAutoZoom(false).then(function (state) {
// Auto-zoom mode is disabled
console.log(state);
});
focusScore(): Promise(<void, Error>)Unlike the web version on https://flat.io, the embed does't catch the focus. This avoids to mess with the parent window, and avoid the browser to do a forced scrolling to the embed iframe.
If the end-user's goal is the usage of the embed to play or write notation, you can use this method to set the focus on the score and allowing they to use the keyboard bindings.
embed.focusScore().then(function () {
// Focus is now on the score
});
getCursorPosition(): Promise(<object, Error>)Return the current position of the cursor (on a specific note).
embed.getCursorPosition().then(function (position) {
// position: {
// "partIdx": 0,
// "staffIdx": 1,
// "voiceIdxInStaff": 0,
// "measureIdx": 2,
// "noteIdx": 1
// }
});
setCursorPosition(position: object): Promise(<object, Error>)Set the current position of the cursor (on a specific note).
embed.setCursorPosition({
partIdx: 0,
staffIdx: 1,
voiceIdx: 0,
measureIdx: 2,
noteIdx: 1
}).then(function (position) {
// position: {
// "partIdx": 0,
// "staffIdx": 1,
// "voiceIdxInStaff": 0,
// "measureIdx": 2,
// "noteIdx": 1
// }
});
You can enable the editor mode by setting the mode to edit when creating the embed:
var embed = new Flat.Embed(container, {
embedParams: {
appId: '<your-app-id>',
mode: 'edit'
}
});
Events are broadcasted following actions made by the end user or you with the JavaScript API. You can subscribe to an event using the method on, and unsubscribe using off. When an event includes some data, this data will be available in the first parameter of the listener callback.
scoreLoadedThis event is triggered once a new score has been loaded. This event doesn't include any data.
cursorPositionThis event is triggered when the position of the user's cursor changes.
{
"partIdx": 0,
"staffIdx": 1,
"voiceIdx": 0,
"measureIdx": 2,
"noteIdx": 1
}
rangeSelectionThis event is triggered when a range of notes is selected or the selection changed.
{
"from": {
"partIdx": 0,
"measureIdx": 1,
"staffIdx": 0,
"voiceIdx": 0,
"noteIdx": 2
},
"to": {
"partIdx": 0,
"measureIdx": 3,
"staffIdx": 0,
"voiceIdx": 0,
"noteIdx": 5
}
}
fullscreenThis event is triggered when the state of the fullscreen changed. The callback will take a boolean as the first parameter that will be true if the fullscreen mode is enabled, and false is the display is back to normal (fullscreen exited).
playThis event is triggered when you or the end-user starts the playback. This event doesn't include any data.
pauseThis event is triggered when you or the end-user pauses the playback. This event doesn't include any data.
stopThis event is triggered when you or the end-user stops the playback. This event doesn't include any data.
playbackPositionThis event is triggered when the playback slider moves. It is usually triggered at the beginning of every measure and will contain an object with information regarding the position of the playback in the score:
{
"beat": "4",
"beatType": "4",
"tempo": 120,
"currentMeasure": 1,
"timePerMeasure": 2
}
2019-05-05: v1.0.0
https://prod.flat-cdn.com/embed-js/${VERSION}/embed.min.js)FAQs
Interact and get events from Flat's Sheet Music Embed
The npm package flat-embed receives a total of 27 weekly downloads. As such, flat-embed popularity was classified as not popular.
We found that flat-embed demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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