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/* *
*
* (c) 2009-2018 Øystein Moseng
*
* Earcons for the sonification module in Highcharts.
*
* License: www.highcharts.com/license
*
* */
'use strict';
import H from '../../parts/Globals.js';
/**
* Define an Instrument and the options for playing it.
*
* @requires module:modules/sonification
*
* @interface Highcharts.EarconInstrument
*//**
* An instrument instance or the name of the instrument in the
* Highcharts.sonification.instruments map.
* @name Highcharts.EarconInstrument#instrument
* @type {Highcharts.Instrument|String}
*//**
* The options to pass to Instrument.play.
* @name Highcharts.EarconInstrument#playOptions
* @type {object}
*/
/**
* Options for an Earcon.
*
* @requires module:modules/sonification
*
* @interface Highcharts.EarconOptionsObject
*//**
* The instruments and their options defining this earcon.
* @name Highcharts.EarconOptionsObject#instruments
* @type {Array<Highcharts.EarconInstrument>}
*//**
* The unique ID of the Earcon. Generated if not supplied.
* @name Highcharts.EarconOptionsObject#id
* @type {string|undefined}
*//**
* Global panning of all instruments. Overrides all panning on individual
* instruments. Can be a number between -1 and 1.
* @name Highcharts.EarconOptionsObject#pan
* @type {number|undefined}
*//**
* Master volume for all instruments. Volume settings on individual instruments
* can still be used for relative volume between the instruments. This setting
* does not affect volumes set by functions in individual instruments. Can be a
* number between 0 and 1. Defaults to 1.
* @name Highcharts.EarconOptionsObject#volume
* @type {number|undefined}
*//**
* Callback function to call when earcon has finished playing.
* @name Highcharts.EarconOptionsObject#onEnd
* @type {Function|undefined}
*/
/**
* The Earcon class. Earcon objects represent a certain sound consisting of
* one or more instruments playing a predefined sound.
*
* @sample highcharts/sonification/earcon/
* Using earcons directly
*
* @requires module:modules/sonification
*
* @class
* @name Highcharts.Earcon
*
* @param {Highcharts.EarconOptionsObject} options
* Options for the Earcon instance.
*/
function Earcon(options) {
this.init(options || {});
}
Earcon.prototype.init = function (options) {
this.options = options;
if (!this.options.id) {
this.options.id = this.id = H.uniqueKey();
}
this.instrumentsPlaying = {};
};
/**
* Play the earcon, optionally overriding init options.
*
* @sample highcharts/sonification/earcon/
* Using earcons directly
*
* @function Highcharts.Earcon#sonify
*
* @param {Highcharts.EarconOptionsObject} options
* Override existing options.
*/
Earcon.prototype.sonify = function (options) {
var playOptions = H.merge(this.options, options);
// Find master volume/pan settings
var masterVolume = H.pick(playOptions.volume, 1),
masterPan = playOptions.pan,
earcon = this,
playOnEnd = options && options.onEnd,
masterOnEnd = earcon.options.onEnd;
// Go through the instruments and play them
playOptions.instruments.forEach(function (opts) {
var instrument = typeof opts.instrument === 'string' ?
H.sonification.instruments[opts.instrument] : opts.instrument,
instrumentOpts = H.merge(opts.playOptions),
instrOnEnd,
instrumentCopy,
copyId;
if (instrument && instrument.play) {
if (opts.playOptions) {
// Handle master pan/volume
if (typeof opts.playOptions.volume !== 'function') {
instrumentOpts.volume = H.pick(masterVolume, 1) *
H.pick(opts.playOptions.volume, 1);
}
instrumentOpts.pan = H.pick(masterPan, instrumentOpts.pan);
// Handle onEnd
instrOnEnd = instrumentOpts.onEnd;
instrumentOpts.onEnd = function () {
delete earcon.instrumentsPlaying[copyId];
if (instrOnEnd) {
instrOnEnd.apply(this, arguments);
}
if (!Object.keys(earcon.instrumentsPlaying).length) {
if (playOnEnd) {
playOnEnd.apply(this, arguments);
}
if (masterOnEnd) {
masterOnEnd.apply(this, arguments);
}
}
};
// Play the instrument. Use a copy so we can play multiple at
// the same time.
instrumentCopy = instrument.copy();
copyId = instrumentCopy.id;
earcon.instrumentsPlaying[copyId] = instrumentCopy;
instrumentCopy.play(instrumentOpts);
}
} else {
H.error(30);
}
});
};
/**
* Cancel any current sonification of the Earcon. Calls onEnd functions.
*
* @function Highcharts.Earcon#cancelSonify
*
* @param {boolean} [fadeOut=false]
* Whether or not to fade out as we stop. If false, the earcon is
* cancelled synchronously.
*/
Earcon.prototype.cancelSonify = function (fadeOut) {
var playing = this.instrumentsPlaying,
instrIds = playing && Object.keys(playing);
if (instrIds && instrIds.length) {
instrIds.forEach(function (instr) {
playing[instr].stop(!fadeOut, null, 'cancelled');
});
this.instrumentsPlaying = {};
}
};
export default Earcon;

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/* *
*
* (c) 2009-2018 Øystein Moseng
*
* Instrument class for sonification module.
*
* License: www.highcharts.com/license
*
* */
/**
* A set of options for the Instrument class.
*
* @requires module:modules/sonification
*
* @interface Highcharts.InstrumentOptionsObject
*//**
* The type of instrument. Currently only `oscillator` is supported. Defaults
* to `oscillator`.
* @name Highcharts.InstrumentOptionsObject#type
* @type {string|undefined}
*//**
* The unique ID of the instrument. Generated if not supplied.
* @name Highcharts.InstrumentOptionsObject#id
* @type {string|undefined}
*//**
* When using functions to determine frequency or other parameters during
* playback, this options specifies how often to call the callback functions.
* Number given in milliseconds. Defaults to 20.
* @name Highcharts.InstrumentOptionsObject#playCallbackInterval
* @type {number|undefined}
*//**
* A list of allowed frequencies for this instrument. If trying to play a
* frequency not on this list, the closest frequency will be used. Set to `null`
* to allow all frequencies to be used. Defaults to `null`.
* @name Highcharts.InstrumentOptionsObject#allowedFrequencies
* @type {Array<number>|undefined}
*//**
* Options specific to oscillator instruments.
* @name Highcharts.InstrumentOptionsObject#oscillator
* @type {Highcharts.OscillatorOptionsObject|undefined}
*/
/**
* Options for playing an instrument.
*
* @requires module:modules/sonification
*
* @interface Highcharts.InstrumentPlayOptionsObject
*//**
* The frequency of the note to play. Can be a fixed number, or a function. The
* function receives one argument: the relative time of the note playing (0
* being the start, and 1 being the end of the note). It should return the
* frequency number for each point in time. The poll interval of this function
* is specified by the Instrument.playCallbackInterval option.
* @name Highcharts.InstrumentPlayOptionsObject#frequency
* @type {number|Function}
*//**
* The duration of the note in milliseconds.
* @name Highcharts.InstrumentPlayOptionsObject#duration
* @type {number}
*//**
* The minimum frequency to allow. If the instrument has a set of allowed
* frequencies, the closest frequency is used by default. Use this option to
* stop too low frequencies from being used.
* @name Highcharts.InstrumentPlayOptionsObject#minFrequency
* @type {number|undefined}
*//**
* The maximum frequency to allow. If the instrument has a set of allowed
* frequencies, the closest frequency is used by default. Use this option to
* stop too high frequencies from being used.
* @name Highcharts.InstrumentPlayOptionsObject#maxFrequency
* @type {number|undefined}
*//**
* The volume of the instrument. Can be a fixed number between 0 and 1, or a
* function. The function receives one argument: the relative time of the note
* playing (0 being the start, and 1 being the end of the note). It should
* return the volume for each point in time. The poll interval of this function
* is specified by the Instrument.playCallbackInterval option. Defaults to 1.
* @name Highcharts.InstrumentPlayOptionsObject#volume
* @type {number|Function|undefined}
*//**
* The panning of the instrument. Can be a fixed number between -1 and 1, or a
* function. The function receives one argument: the relative time of the note
* playing (0 being the start, and 1 being the end of the note). It should
* return the panning value for each point in time. The poll interval of this
* function is specified by the Instrument.playCallbackInterval option.
* Defaults to 0.
* @name Highcharts.InstrumentPlayOptionsObject#pan
* @type {number|Function|undefined}
*//**
* Callback function to be called when the play is completed.
* @name Highcharts.InstrumentPlayOptionsObject#onEnd
* @type {Function|undefined}
*/
/**
* @requires module:modules/sonification
*
* @interface Highcharts.OscillatorOptionsObject
*//**
* The waveform shape to use for oscillator instruments. Defaults to `sine`.
* @name Highcharts.OscillatorOptionsObject#waveformShape
* @type {string|undefined}
*/
'use strict';
import H from '../../parts/Globals.js';
// Default options for Instrument constructor
var defaultOptions = {
type: 'oscillator',
playCallbackInterval: 20,
oscillator: {
waveformShape: 'sine'
}
};
/**
* The Instrument class. Instrument objects represent an instrument capable of
* playing a certain pitch for a specified duration.
*
* @sample highcharts/sonification/instrument/
* Using Instruments directly
* @sample highcharts/sonification/instrument-advanced/
* Using callbacks for instrument parameters
*
* @requires module:modules/sonification
*
* @class
* @name Highcharts.Instrument
*
* @param {Highcharts.InstrumentOptionsObject} options
* Options for the instrument instance.
*/
function Instrument(options) {
this.init(options);
}
Instrument.prototype.init = function (options) {
if (!this.initAudioContext()) {
H.error(29);
return;
}
this.options = H.merge(defaultOptions, options);
this.id = this.options.id = options && options.id || H.uniqueKey();
// Init the audio nodes
var ctx = H.audioContext;
this.gainNode = ctx.createGain();
this.setGain(0);
this.panNode = ctx.createStereoPanner && ctx.createStereoPanner();
if (this.panNode) {
this.setPan(0);
this.gainNode.connect(this.panNode);
this.panNode.connect(ctx.destination);
} else {
this.gainNode.connect(ctx.destination);
}
// Oscillator initialization
if (this.options.type === 'oscillator') {
this.initOscillator(this.options.oscillator);
}
// Init timer list
this.playCallbackTimers = [];
};
/**
* Return a copy of an instrument. Only one instrument instance can play at a
* time, so use this to get a new copy of the instrument that can play alongside
* it. The new instrument copy will receive a new ID unless one is supplied in
* options.
*
* @function Highcharts.Instrument#copy
*
* @param {Highcharts.InstrumentOptionsObject} [options]
* Options to merge in for the copy.
*
* @return {Highcharts.Instrument}
* A new Instrument instance with the same options.
*/
Instrument.prototype.copy = function (options) {
return new Instrument(H.merge(this.options, { id: null }, options));
};
/**
* Init the audio context, if we do not have one.
* @private
* @return {boolean} True if successful, false if not.
*/
Instrument.prototype.initAudioContext = function () {
var Context = H.win.AudioContext || H.win.webkitAudioContext,
hasOldContext = !!H.audioContext;
if (Context) {
H.audioContext = H.audioContext || new Context();
if (
!hasOldContext &&
H.audioContext &&
H.audioContext.state === 'running'
) {
H.audioContext.suspend(); // Pause until we need it
}
return !!(
H.audioContext &&
H.audioContext.createOscillator &&
H.audioContext.createGain
);
}
return false;
};
/**
* Init an oscillator instrument.
* @private
* @param {object} oscillatorOptions - The oscillator options passed to
* Highcharts.Instrument#init.
*/
Instrument.prototype.initOscillator = function (options) {
var ctx = H.audioContext;
this.oscillator = ctx.createOscillator();
this.oscillator.type = options.waveformShape;
this.oscillator.connect(this.gainNode);
this.oscillatorStarted = false;
};
/**
* Set pan position.
* @private
* @param {number} panValue - The pan position to set for the instrument.
*/
Instrument.prototype.setPan = function (panValue) {
if (this.panNode) {
this.panNode.pan.setValueAtTime(panValue, H.audioContext.currentTime);
}
};
/**
* Set gain level. A maximum of 1.2 is allowed before we emit a warning. The
* actual volume is not set above this level regardless of input.
* @private
* @param {number} gainValue - The gain level to set for the instrument.
* @param {number} [rampTime=0] - Gradually change the gain level, time given in
* milliseconds.
*/
Instrument.prototype.setGain = function (gainValue, rampTime) {
if (this.gainNode) {
if (gainValue > 1.2) {
console.warn( // eslint-disable-line
'Highcharts sonification warning: ' +
'Volume of instrument set too high.'
);
gainValue = 1.2;
}
if (rampTime) {
this.gainNode.gain.setValueAtTime(
this.gainNode.gain.value, H.audioContext.currentTime
);
this.gainNode.gain.linearRampToValueAtTime(
gainValue,
H.audioContext.currentTime + rampTime / 1000
);
} else {
this.gainNode.gain.setValueAtTime(
gainValue, H.audioContext.currentTime
);
}
}
};
/**
* Cancel ongoing gain ramps.
* @private
*/
Instrument.prototype.cancelGainRamp = function () {
if (this.gainNode) {
this.gainNode.gain.cancelScheduledValues(0);
}
};
/**
* Get the closest valid frequency for this instrument.
* @private
* @param {number} frequency - The target frequency.
* @param {number} [min] - Minimum frequency to return.
* @param {number} [max] - Maximum frequency to return.
* @return {number} The closest valid frequency to the input frequency.
*/
Instrument.prototype.getValidFrequency = function (frequency, min, max) {
var validFrequencies = this.options.allowedFrequencies,
maximum = H.pick(max, Infinity),
minimum = H.pick(min, -Infinity);
return !validFrequencies || !validFrequencies.length ?
// No valid frequencies for this instrument, return the target
frequency :
// Use the valid frequencies and return the closest match
validFrequencies.reduce(function (acc, cur) {
// Find the closest allowed value
return Math.abs(cur - frequency) < Math.abs(acc - frequency) &&
cur < maximum && cur > minimum ?
cur : acc;
}, Infinity);
};
/**
* Clear existing play callback timers.
* @private
*/
Instrument.prototype.clearPlayCallbackTimers = function () {
this.playCallbackTimers.forEach(function (timer) {
clearInterval(timer);
});
this.playCallbackTimers = [];
};
/**
* Set the current frequency being played by the instrument. The closest valid
* frequency between the frequency limits is used.
* @param {number} frequency - The frequency to set.
* @param {object} [frequencyLimits] - Object with maxFrequency and minFrequency
*/
Instrument.prototype.setFrequency = function (frequency, frequencyLimits) {
var limits = frequencyLimits || {},
validFrequency = this.getValidFrequency(
frequency, limits.min, limits.max
);
if (this.options.type === 'oscillator') {
this.oscillatorPlay(validFrequency);
}
};
/**
* Play oscillator instrument.
* @private
* @param {number} frequency - The frequency to play.
*/
Instrument.prototype.oscillatorPlay = function (frequency) {
if (!this.oscillatorStarted) {
this.oscillator.start();
this.oscillatorStarted = true;
}
this.oscillator.frequency.setValueAtTime(
frequency, H.audioContext.currentTime
);
};
/**
* Prepare instrument before playing. Resumes the audio context and starts the
* oscillator.
* @private
*/
Instrument.prototype.preparePlay = function () {
this.setGain(0.001);
if (H.audioContext.state === 'suspended') {
H.audioContext.resume();
}
if (this.oscillator && !this.oscillatorStarted) {
this.oscillator.start();
this.oscillatorStarted = true;
}
};
/**
* Play the instrument according to options.
*
* @sample highcharts/sonification/instrument/
* Using Instruments directly
* @sample highcharts/sonification/instrument-advanced/
* Using callbacks for instrument parameters
*
* @function Highcharts.Instrument#play
*
* @param {Highcharts.InstrumentPlayOptionsObject} options
* Options for the playback of the instrument.
*/
Instrument.prototype.play = function (options) {
var instrument = this,
duration = options.duration || 0,
// Set a value, or if it is a function, set it continously as a timer.
// Pass in the value/function to set, the setter function, and any
// additional data to pass through to the setter function.
setOrStartTimer = function (value, setter, setterData) {
var target = options.duration,
currentDurationIx = 0,
callbackInterval = instrument.options.playCallbackInterval;
if (typeof value === 'function') {
var timer = setInterval(function () {
currentDurationIx++;
var curTime = currentDurationIx * callbackInterval / target;
if (curTime >= 1) {
instrument[setter](value(1), setterData);
clearInterval(timer);
} else {
instrument[setter](value(curTime), setterData);
}
}, callbackInterval);
instrument.playCallbackTimers.push(timer);
} else {
instrument[setter](value, setterData);
}
};
if (!instrument.id) {
// No audio support - do nothing
return;
}
// If the AudioContext is suspended we have to resume it before playing
if (
H.audioContext.state === 'suspended' ||
this.oscillator && !this.oscillatorStarted
) {
instrument.preparePlay();
// Try again in 10ms
setTimeout(function () {
instrument.play(options);
}, 10);
return;
}
// Clear any existing play timers
if (instrument.playCallbackTimers.length) {
instrument.clearPlayCallbackTimers();
}
// Clear any gain ramps
instrument.cancelGainRamp();
// Clear stop oscillator timer
if (instrument.stopOscillatorTimeout) {
clearTimeout(instrument.stopOscillatorTimeout);
delete instrument.stopOscillatorTimeout;
}
// If a note is playing right now, clear the stop timeout, and call the
// callback.
if (instrument.stopTimeout) {
clearTimeout(instrument.stopTimeout);
delete instrument.stopTimeout;
if (instrument.stopCallback) {
// We have a callback for the play we are interrupting. We do not
// allow this callback to start a new play, because that leads to
// chaos. We pass in 'cancelled' to indicate that this note did not
// finish, but still stopped.
instrument._play = instrument.play;
instrument.play = function () { };
instrument.stopCallback('cancelled');
instrument.play = instrument._play;
}
}
// Stop the note without fadeOut if the duration is too short to hear the
// note otherwise.
var immediate = duration < H.sonification.fadeOutDuration + 20;
// Stop the instrument after the duration of the note
instrument.stopCallback = options.onEnd;
var onStop = function () {
delete instrument.stopTimeout;
instrument.stop(immediate);
};
if (duration) {
instrument.stopTimeout = setTimeout(
onStop,
immediate ? duration :
duration - H.sonification.fadeOutDuration
);
// Play the note
setOrStartTimer(options.frequency, 'setFrequency', null, {
minFrequency: options.minFrequency,
maxFrequency: options.maxFrequency
});
// Set the volume and panning
setOrStartTimer(H.pick(options.volume, 1), 'setGain', 4); // Slight ramp
setOrStartTimer(H.pick(options.pan, 0), 'setPan');
} else {
// No note duration, so just stop immediately
onStop();
}
};
/**
* Mute an instrument that is playing. If the instrument is not currently
* playing, this function does nothing.
*
* @function Highcharts.Instrument#mute
*/
Instrument.prototype.mute = function () {
this.setGain(0.0001, H.sonification.fadeOutDuration * 0.8);
};
/**
* Stop the instrument playing.
*
* @function Highcharts.Instrument#stop
*
* @param {boolean} immediately
* Whether to do the stop immediately or fade out.
*
* @param {Function} onStopped
* Callback function to be called when the stop is completed.
*
* @param {*} callbackData
* Data to send to the onEnd callback functions.
*/
Instrument.prototype.stop = function (immediately, onStopped, callbackData) {
var instr = this,
reset = function () {
// Remove timeout reference
if (instr.stopOscillatorTimeout) {
delete instr.stopOscillatorTimeout;
}
// The oscillator may have stopped in the meantime here, so allow
// this function to fail if so.
try {
instr.oscillator.stop();
} catch (e) {}
instr.oscillator.disconnect(instr.gainNode);
// We need a new oscillator in order to restart it
instr.initOscillator(instr.options.oscillator);
// Done stopping, call the callback from the stop
if (onStopped) {
onStopped(callbackData);
}
// Call the callback for the play we finished
if (instr.stopCallback) {
instr.stopCallback(callbackData);
}
};
// Clear any existing timers
if (instr.playCallbackTimers.length) {
instr.clearPlayCallbackTimers();
}
if (instr.stopTimeout) {
clearTimeout(instr.stopTimeout);
}
if (immediately) {
instr.setGain(0);
reset();
} else {
instr.mute();
// Stop the oscillator after the mute fade-out has finished
instr.stopOscillatorTimeout =
setTimeout(reset, H.sonification.fadeOutDuration + 100);
}
};
export default Instrument;

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/* *
*
* (c) 2009-2018 Øystein Moseng
*
* TimelineEvent class definition.
*
* License: www.highcharts.com/license
*
* */
/**
* A set of options for the TimelineEvent class.
*
* @requires module:modules/sonification
*
* @private
* @interface Highcharts.TimelineEventOptionsObject
*//**
* The object we want to sonify when playing the TimelineEvent. Can be any
* object that implements the `sonify` and `cancelSonify` functions. If this is
* not supplied, the TimelineEvent is considered a silent event, and the onEnd
* event is immediately called.
* @name Highcharts.TimelineEventOptionsObject#eventObject
* @type {*}
*//**
* Options to pass on to the eventObject when playing it.
* @name Highcharts.TimelineEventOptionsObject#playOptions
* @type {object|undefined}
*//**
* The time at which we want this event to play (in milliseconds offset). This
* is not used for the TimelineEvent.play function, but rather intended as a
* property to decide when to call TimelineEvent.play. Defaults to 0.
* @name Highcharts.TimelineEventOptionsObject#time
* @type {number|undefined}
*//**
* Unique ID for the event. Generated automatically if not supplied.
* @name Highcharts.TimelineEventOptionsObject#id
* @type {string|undefined}
*//**
* Callback called when the play has finished.
* @name Highcharts.TimelineEventOptionsObject#onEnd
* @type {Function|undefined}
*/
'use strict';
import H from '../../parts/Globals.js';
import utilities from 'utilities.js';
/**
* The TimelineEvent class. Represents a sound event on a timeline.
*
* @requires module:modules/sonification
*
* @private
* @class
* @name Highcharts.TimelineEvent
*
* @param {Highcharts.TimelineEventOptionsObject} options
* Options for the TimelineEvent.
*/
function TimelineEvent(options) {
this.init(options || {});
}
TimelineEvent.prototype.init = function (options) {
this.options = options;
this.time = options.time || 0;
this.id = this.options.id = options.id || H.uniqueKey();
};
/**
* Play the event. Does not take the TimelineEvent.time option into account,
* and plays the event immediately.
*
* @function Highcharts.TimelineEvent#play
*
* @param {Highcharts.TimelineEventOptionsObject} [options]
* Options to pass in to the eventObject when playing it.
*/
TimelineEvent.prototype.play = function (options) {
var eventObject = this.options.eventObject,
masterOnEnd = this.options.onEnd,
playOnEnd = options && options.onEnd,
playOptionsOnEnd = this.options.playOptions &&
this.options.playOptions.onEnd,
playOptions = H.merge(this.options.playOptions, options);
if (eventObject && eventObject.sonify) {
// If we have multiple onEnds defined, use all
playOptions.onEnd = masterOnEnd || playOnEnd || playOptionsOnEnd ?
function () {
var args = arguments;
[masterOnEnd, playOnEnd, playOptionsOnEnd].forEach(
function (onEnd) {
if (onEnd) {
onEnd.apply(this, args);
}
}
);
} : undefined;
eventObject.sonify(playOptions);
} else {
if (playOnEnd) {
playOnEnd();
}
if (masterOnEnd) {
masterOnEnd();
}
}
};
/**
* Cancel the sonification of this event. Does nothing if the event is not
* currently sonifying.
*
* @function Highcharts.TimelineEvent#cancel
*
* @param {boolean} [fadeOut=false]
* Whether or not to fade out as we stop. If false, the event is
* cancelled synchronously.
*/
TimelineEvent.prototype.cancel = function (fadeOut) {
this.options.eventObject.cancelSonify(fadeOut);
};
/**
* A set of options for the TimelinePath class.
*
* @requires module:modules/
*
* @private
* @interface Highcharts.TimelinePathOptionsObject
*//**
* List of TimelineEvents to play on this track.
* @name Highcharts.TimelinePathOptionsObject#events
* @type {Array<Highcharts.TimelineEvent>}
*//**
* If this option is supplied, this path ignores all events and just waits for
* the specified number of milliseconds before calling onEnd.
* @name Highcharts.TimelinePathOptionsObject#silentWait
* @type {number|undefined}
*//**
* Unique ID for this timeline path. Automatically generated if not supplied.
* @name Highcharts.TimelinePathOptionsObject#id
* @type {string|undefined}
*//**
* Callback called before the path starts playing.
* @name Highcharts.TimelinePathOptionsObject#onStart
* @type {Function|undefined}
*//**
* Callback function to call before an event plays.
* @name Highcharts.TimelinePathOptionsObject#onEventStart
* @type {Function|undefined}
*//**
* Callback function to call after an event has stopped playing.
* @name Highcharts.TimelinePathOptionsObject#onEventEnd
* @type {Function|undefined}
*//**
* Callback called when the whole path is finished.
* @name Highcharts.TimelinePathOptionsObject#onEnd
* @type {Function|undefined}
*/
/**
* The TimelinePath class. Represents a track on a timeline with a list of
* sound events to play at certain times relative to each other.
*
* @requires module:modules/sonification
*
* @private
* @class
* @name Highcharts.TimelinePath
*
* @param {Highcharts.TimelinePathOptionsObject} options
* Options for the TimelinePath.
*/
function TimelinePath(options) {
this.init(options);
}
TimelinePath.prototype.init = function (options) {
this.options = options;
this.id = this.options.id = options.id || H.uniqueKey();
this.cursor = 0;
this.eventsPlaying = {};
// Handle silent wait, otherwise use events from options
this.events =
options.silentWait ?
[
new TimelineEvent({ time: 0 }),
new TimelineEvent({ time: options.silentWait })
] :
this.options.events;
// We need to sort our events by time
this.sortEvents();
// Get map from event ID to index
this.updateEventIdMap();
// Signal events to fire
this.signalHandler = new utilities.SignalHandler(
['playOnEnd', 'masterOnEnd', 'onStart', 'onEventStart', 'onEventEnd']
);
this.signalHandler.registerSignalCallbacks(
H.merge(options, { masterOnEnd: options.onEnd })
);
};
/**
* Sort the internal event list by time.
* @private
*/
TimelinePath.prototype.sortEvents = function () {
this.events = this.events.sort(function (a, b) {
return a.time - b.time;
});
};
/**
* Update the internal eventId to index map.
* @private
*/
TimelinePath.prototype.updateEventIdMap = function () {
this.eventIdMap = this.events.reduce(function (acc, cur, i) {
acc[cur.id] = i;
return acc;
}, {});
};
/**
* Add events to the path. Should not be done while the path is playing.
* The new events are inserted according to their time property.
* @private
* @param {Array<Highcharts.TimelineEvent>} newEvents - The new timeline events
* to add.
*/
TimelinePath.prototype.addTimelineEvents = function (newEvents) {
this.events = this.events.concat(newEvents);
this.sortEvents(); // Sort events by time
this.updateEventIdMap(); // Update the event ID to index map
};
/**
* Get the current TimelineEvent under the cursor.
* @private
* @return {Highcharts.TimelineEvent} The current timeline event.
*/
TimelinePath.prototype.getCursor = function () {
return this.events[this.cursor];
};
/**
* Set the current TimelineEvent under the cursor.
* @private
* @param {string} eventId - The ID of the timeline event to set as current.
* @return {boolean} True if there is an event with this ID in the path. False
* otherwise.
*/
TimelinePath.prototype.setCursor = function (eventId) {
var ix = this.eventIdMap[eventId];
if (ix !== undefined) {
this.cursor = ix;
return true;
}
return false;
};
/**
* Play the timeline from the current cursor.
* @private
* @param {Function} onEnd - Callback to call when play finished. Does not
* override other onEnd callbacks.
*/
TimelinePath.prototype.play = function (onEnd) {
this.pause();
this.signalHandler.emitSignal('onStart');
this.signalHandler.clearSignalCallbacks(['playOnEnd']);
this.signalHandler.registerSignalCallbacks({ playOnEnd: onEnd });
this.playEvents(1);
};
/**
* Play the timeline backwards from the current cursor.
* @private
* @param {Function} onEnd - Callback to call when play finished. Does not
* override other onEnd callbacks.
*/
TimelinePath.prototype.rewind = function (onEnd) {
this.pause();
this.signalHandler.emitSignal('onStart');
this.signalHandler.clearSignalCallbacks(['playOnEnd']);
this.signalHandler.registerSignalCallbacks({ playOnEnd: onEnd });
this.playEvents(-1);
};
/**
* Reset the cursor to the beginning.
* @private
*/
TimelinePath.prototype.resetCursor = function () {
this.cursor = 0;
};
/**
* Reset the cursor to the end.
* @private
*/
TimelinePath.prototype.resetCursorEnd = function () {
this.cursor = this.events.length - 1;
};
/**
* Cancel current playing. Leaves the cursor intact.
* @private
* @param {boolean} [fadeOut=false] - Whether or not to fade out as we stop. If
* false, the path is cancelled synchronously.
*/
TimelinePath.prototype.pause = function (fadeOut) {
var timelinePath = this;
// Cancel next scheduled play
clearTimeout(timelinePath.nextScheduledPlay);
// Cancel currently playing events
Object.keys(timelinePath.eventsPlaying).forEach(function (id) {
if (timelinePath.eventsPlaying[id]) {
timelinePath.eventsPlaying[id].cancel(fadeOut);
}
});
timelinePath.eventsPlaying = {};
};
/**
* Play the events, starting from current cursor, and going in specified
* direction.
* @private
* @param {number} direction - The direction to play, 1 for forwards and -1 for
* backwards.
*/
TimelinePath.prototype.playEvents = function (direction) {
var timelinePath = this,
curEvent = timelinePath.events[this.cursor],
nextEvent = timelinePath.events[this.cursor + direction],
timeDiff,
onEnd = function (signalData) {
timelinePath.signalHandler.emitSignal(
'masterOnEnd', signalData
);
timelinePath.signalHandler.emitSignal(
'playOnEnd', signalData
);
};
// Store reference to path on event
curEvent.timelinePath = timelinePath;
// Emit event, cancel if returns false
if (
timelinePath.signalHandler.emitSignal(
'onEventStart', curEvent
) === false
) {
onEnd({
event: curEvent,
cancelled: true
});
return;
}
// Play the current event
timelinePath.eventsPlaying[curEvent.id] = curEvent;
curEvent.play({
onEnd: function (cancelled) {
var signalData = {
event: curEvent,
cancelled: !!cancelled
};
// Keep track of currently playing events for cancelling
delete timelinePath.eventsPlaying[curEvent.id];
// Handle onEventEnd
timelinePath.signalHandler.emitSignal('onEventEnd', signalData);
// Reached end of path?
if (!nextEvent) {
onEnd(signalData);
}
}
});
// Schedule next
if (nextEvent) {
timeDiff = Math.abs(nextEvent.time - curEvent.time);
if (timeDiff < 1) {
// Play immediately
timelinePath.cursor += direction;
timelinePath.playEvents(direction);
} else {
// Schedule after the difference in ms
this.nextScheduledPlay = setTimeout(function () {
timelinePath.cursor += direction;
timelinePath.playEvents(direction);
}, timeDiff);
}
}
};
/* ************************************************************************** *
* TIMELINE *
* ************************************************************************** */
/**
* A set of options for the Timeline class.
*
* @requires module:modules/sonification
*
* @private
* @interface Highcharts.TimelineOptionsObject
*//**
* List of TimelinePaths to play. Multiple paths can be grouped together and
* played simultaneously by supplying an array of paths in place of a single
* path.
* @name Highcharts.TimelineOptionsObject#paths
* @type {Array<Highcharts.TimelinePath|Array<Highcharts.TimelinePath>>}
*//**
* Callback function to call before a path plays.
* @name Highcharts.TimelineOptionsObject#onPathStart
* @type {Function|undefined}
*//**
* Callback function to call after a path has stopped playing.
* @name Highcharts.TimelineOptionsObject#onPathEnd
* @type {Function|undefined}
*//**
* Callback called when the whole path is finished.
* @name Highcharts.TimelineOptionsObject#onEnd
* @type {Function|undefined}
*/
/**
* The Timeline class. Represents a sonification timeline with a list of
* timeline paths with events to play at certain times relative to each other.
*
* @requires module:modules/sonification
*
* @private
* @class
* @name Highcharts.Timeline
*
* @param {Highcharts.TimelineOptionsObject} options
* Options for the Timeline.
*/
function Timeline(options) {
this.init(options || {});
}
Timeline.prototype.init = function (options) {
this.options = options;
this.cursor = 0;
this.paths = options.paths;
this.pathsPlaying = {};
this.signalHandler = new utilities.SignalHandler(
['playOnEnd', 'masterOnEnd', 'onPathStart', 'onPathEnd']
);
this.signalHandler.registerSignalCallbacks(
H.merge(options, { masterOnEnd: options.onEnd })
);
};
/**
* Play the timeline forwards from cursor.
* @private
* @param {Function} onEnd - Callback to call when play finished. Does not
* override other onEnd callbacks.
*/
Timeline.prototype.play = function (onEnd) {
this.pause();
this.signalHandler.clearSignalCallbacks(['playOnEnd']);
this.signalHandler.registerSignalCallbacks({ playOnEnd: onEnd });
this.playPaths(1);
};
/**
* Play the timeline backwards from cursor.
* @private
* @param {Function} onEnd - Callback to call when play finished. Does not
* override other onEnd callbacks.
*/
Timeline.prototype.rewind = function (onEnd) {
this.pause();
this.signalHandler.clearSignalCallbacks(['playOnEnd']);
this.signalHandler.registerSignalCallbacks({ playOnEnd: onEnd });
this.playPaths(-1);
};
/**
* Play the timeline in the specified direction.
* @private
* @param {number} direction - Direction to play in. 1 for forwards, -1 for
* backwards.
*/
Timeline.prototype.playPaths = function (direction) {
var curPaths = H.splat(this.paths[this.cursor]),
nextPaths = this.paths[this.cursor + direction],
timeline = this,
signalHandler = this.signalHandler,
pathsEnded = 0,
// Play a path
playPath = function (path) {
// Emit signal and set playing state
signalHandler.emitSignal('onPathStart', path);
timeline.pathsPlaying[path.id] = path;
// Do the play
path[direction > 0 ? 'play' : 'rewind'](function (callbackData) {
// Play ended callback
// Data to pass to signal callbacks
var cancelled = callbackData && callbackData.cancelled,
signalData = {
path: path,
cancelled: cancelled
};
// Clear state and send signal
delete timeline.pathsPlaying[path.id];
signalHandler.emitSignal('onPathEnd', signalData);
// Handle next paths
pathsEnded++;
if (pathsEnded >= curPaths.length) {
// We finished all of the current paths for cursor.
if (nextPaths && !cancelled) {
// We have more paths, move cursor along
timeline.cursor += direction;
// Reset upcoming path cursors before playing
H.splat(nextPaths).forEach(function (nextPath) {
nextPath[
direction > 0 ? 'resetCursor' : 'resetCursorEnd'
]();
});
// Play next
timeline.playPaths(direction);
} else {
// If it is the last path in this direction, call onEnd
signalHandler.emitSignal('playOnEnd', signalData);
signalHandler.emitSignal('masterOnEnd', signalData);
}
}
});
};
// Go through the paths under cursor and play them
curPaths.forEach(function (path) {
if (path) {
// Store reference to timeline
path.timeline = timeline;
// Leave a timeout to let notes fade out before next play
setTimeout(function () {
playPath(path);
}, H.sonification.fadeOutTime);
}
});
};
/**
* Stop the playing of the timeline. Cancels all current sounds, but does not
* affect the cursor.
* @private
* @param {boolean} [fadeOut=false] - Whether or not to fade out as we stop. If
* false, the timeline is cancelled synchronously.
*/
Timeline.prototype.pause = function (fadeOut) {
var timeline = this;
// Cancel currently playing events
Object.keys(timeline.pathsPlaying).forEach(function (id) {
if (timeline.pathsPlaying[id]) {
timeline.pathsPlaying[id].pause(fadeOut);
}
});
timeline.pathsPlaying = {};
};
/**
* Reset the cursor to the beginning of the timeline.
* @private
*/
Timeline.prototype.resetCursor = function () {
this.paths.forEach(function (paths) {
H.splat(paths).forEach(function (path) {
path.resetCursor();
});
});
this.cursor = 0;
};
/**
* Reset the cursor to the end of the timeline.
* @private
*/
Timeline.prototype.resetCursorEnd = function () {
this.paths.forEach(function (paths) {
H.splat(paths).forEach(function (path) {
path.resetCursorEnd();
});
});
this.cursor = this.paths.length - 1;
};
/**
* Set the current TimelineEvent under the cursor. If multiple paths are being
* played at the same time, this function only affects a single path (the one
* that contains the eventId that is passed in).
* @private
* @param {string} eventId - The ID of the timeline event to set as current.
* @return {boolean} True if the cursor was set, false if no TimelineEvent was
* found for this ID.
*/
Timeline.prototype.setCursor = function (eventId) {
return this.paths.some(function (paths) {
return H.splat(paths).some(function (path) {
return path.setCursor(eventId);
});
});
};
/**
* Get the current TimelineEvents under the cursors. This function will return
* the event under the cursor for each currently playing path, as an object
* where the path ID is mapped to the TimelineEvent under that path's cursor.
* @private
* @return {object} The TimelineEvents under each path's cursors.
*/
Timeline.prototype.getCursor = function () {
return this.getCurrentPlayingPaths().reduce(function (acc, cur) {
acc[cur.id] = cur.getCursor();
return acc;
}, {});
};
/**
* Check if timeline is reset or at start.
* @private
* @return {boolean} True if timeline is at the beginning.
*/
Timeline.prototype.atStart = function () {
return !this.getCurrentPlayingPaths().some(function (path) {
return path.cursor;
});
};
/**
* Get the current TimelinePaths being played.
* @private
* @return {Array<Highcharts.TimelinePath>} The TimelinePaths currently being
* played.
*/
Timeline.prototype.getCurrentPlayingPaths = function () {
return H.splat(this.paths[this.cursor]);
};
// Export the classes
var timelineClasses = {
TimelineEvent: TimelineEvent,
TimelinePath: TimelinePath,
Timeline: Timeline
};
export default timelineClasses;

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/* *
*
* (c) 2009-2018 Øystein Moseng
*
* Instrument definitions for sonification module.
*
* License: www.highcharts.com/license
*
* */
'use strict';
import Instrument from 'Instrument.js';
import utilities from 'utilities.js';
var instruments = {};
['sine', 'square', 'triangle', 'sawtooth'].forEach(function (waveform) {
// Add basic instruments
instruments[waveform] = new Instrument({
oscillator: { waveformShape: waveform }
});
// Add musical instruments
instruments[waveform + 'Musical'] = new Instrument({
allowedFrequencies: utilities.musicalFrequencies,
oscillator: { waveformShape: waveform }
});
// Add scaled instruments
instruments[waveform + 'Major'] = new Instrument({
allowedFrequencies: utilities.getMusicalScale([1, 3, 5, 6, 8, 10, 12]),
oscillator: { waveformShape: waveform }
});
});
export default instruments;

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/* *
*
* (c) 2009-2018 Øystein Moseng
*
* List of musical frequencies from C0 to C8.
*
* License: www.highcharts.com/license
*
* */
'use strict';
var frequencies = [
16.351597831287414, // C0
17.323914436054505,
18.354047994837977,
19.445436482630058,
20.601722307054366,
21.826764464562746,
23.12465141947715,
24.499714748859326,
25.956543598746574,
27.5, // A0
29.13523509488062,
30.86770632850775,
32.70319566257483, // C1
34.64782887210901,
36.70809598967594,
38.890872965260115,
41.20344461410875,
43.653528929125486,
46.2493028389543,
48.999429497718666,
51.91308719749314,
55, // A1
58.27047018976124,
61.7354126570155,
65.40639132514966, // C2
69.29565774421802,
73.41619197935188,
77.78174593052023,
82.4068892282175,
87.30705785825097,
92.4986056779086,
97.99885899543733,
103.82617439498628,
110, // A2
116.54094037952248,
123.47082531403103,
130.8127826502993, // C3
138.59131548843604,
146.8323839587038,
155.56349186104046,
164.81377845643496,
174.61411571650194,
184.9972113558172,
195.99771799087463,
207.65234878997256,
220, // A3
233.08188075904496,
246.94165062806206,
261.6255653005986, // C4
277.1826309768721,
293.6647679174076,
311.1269837220809,
329.6275569128699,
349.2282314330039,
369.9944227116344,
391.99543598174927,
415.3046975799451,
440, // A4
466.1637615180899,
493.8833012561241,
523.2511306011972, // C5
554.3652619537442,
587.3295358348151,
622.2539674441618,
659.2551138257398,
698.4564628660078,
739.9888454232688,
783.9908719634985,
830.6093951598903,
880, // A5
932.3275230361799,
987.7666025122483,
1046.5022612023945, // C6
1108.7305239074883,
1174.6590716696303,
1244.5079348883237,
1318.5102276514797,
1396.9129257320155,
1479.9776908465376,
1567.981743926997,
1661.2187903197805,
1760, // A6
1864.6550460723597,
1975.533205024496,
2093.004522404789, // C7
2217.4610478149766,
2349.31814333926,
2489.0158697766474,
2637.02045530296,
2793.825851464031,
2959.955381693075,
3135.9634878539946,
3322.437580639561,
3520, // A7
3729.3100921447194,
3951.066410048992,
4186.009044809578 // C8
];
export default frequencies;

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/* *
*
* (c) 2009-2018 Øystein Moseng
*
* Code for sonifying single points.
*
* License: www.highcharts.com/license
*
* */
/**
* Define the parameter mapping for an instrument.
*
* @requires module:modules/sonification
*
* @interface Highcharts.PointInstrumentMappingObject
*//**
* Define the volume of the instrument. This can be a string with a data
* property name, e.g. `'y'`, in which case this data property is used to define
* the volume relative to the `y`-values of the other points. A higher `y` value
* would then result in a higher volume. This option can also be a fixed number
* or a function. If it is a function, this function is called in regular
* intervals while the note is playing. It receives three arguments: The point,
* the dataExtremes, and the current relative time - where 0 is the beginning of
* the note and 1 is the end. The function should return the volume of the note
* as a number between 0 and 1.
* @name Highcharts.PointInstrumentMappingObject#volume
* @type {string|number|Function}
*//**
* Define the duration of the notes for this instrument. This can be a string
* with a data property name, e.g. `'y'`, in which case this data property is
* used to define the duration relative to the `y`-values of the other points. A
* higher `y` value would then result in a longer duration. This option can also
* be a fixed number or a function. If it is a function, this function is called
* once before the note starts playing, and should return the duration in
* milliseconds. It receives two arguments: The point, and the dataExtremes.
* @name Highcharts.PointInstrumentMappingObject#duration
* @type {string|number|Function}
*//**
* Define the panning of the instrument. This can be a string with a data
* property name, e.g. `'x'`, in which case this data property is used to define
* the panning relative to the `x`-values of the other points. A higher `x`
* value would then result in a higher panning value (panned further to the
* right). This option can also be a fixed number or a function. If it is a
* function, this function is called in regular intervals while the note is
* playing. It receives three arguments: The point, the dataExtremes, and the
* current relative time - where 0 is the beginning of the note and 1 is the
* end. The function should return the panning of the note as a number between
* -1 and 1.
* @name Highcharts.PointInstrumentMappingObject#pan
* @type {string|number|Function|undefined}
*//**
* Define the frequency of the instrument. This can be a string with a data
* property name, e.g. `'y'`, in which case this data property is used to define
* the frequency relative to the `y`-values of the other points. A higher `y`
* value would then result in a higher frequency. This option can also be a
* fixed number or a function. If it is a function, this function is called in
* regular intervals while the note is playing. It receives three arguments:
* The point, the dataExtremes, and the current relative time - where 0 is the
* beginning of the note and 1 is the end. The function should return the
* frequency of the note as a number (in Hz).
* @name Highcharts.PointInstrumentMappingObject#frequency
* @type {string|number|Function}
*/
/**
* @requires module:modules/sonification
*
* @interface Highcharts.PointInstrumentOptionsObject
*//**
* The minimum duration for a note when using a data property for duration. Can
* be overridden by using either a fixed number or a function for
* instrumentMapping.duration. Defaults to 20.
* @name Highcharts.PointInstrumentOptionsObject#minDuration
* @type {number|undefined}
*//**
* The maximum duration for a note when using a data property for duration. Can
* be overridden by using either a fixed number or a function for
* instrumentMapping.duration. Defaults to 2000.
* @name Highcharts.PointInstrumentOptionsObject#maxDuration
* @type {number|undefined}
*//**
* The minimum pan value for a note when using a data property for panning. Can
* be overridden by using either a fixed number or a function for
* instrumentMapping.pan. Defaults to -1 (fully left).
* @name Highcharts.PointInstrumentOptionsObject#minPan
* @type {number|undefined}
*//**
* The maximum pan value for a note when using a data property for panning. Can
* be overridden by using either a fixed number or a function for
* instrumentMapping.pan. Defaults to 1 (fully right).
* @name Highcharts.PointInstrumentOptionsObject#maxPan
* @type {number|undefined}
*//**
* The minimum volume for a note when using a data property for volume. Can be
* overridden by using either a fixed number or a function for
* instrumentMapping.volume. Defaults to 0.1.
* @name Highcharts.PointInstrumentOptionsObject#minVolume
* @type {number|undefined}
*//**
* The maximum volume for a note when using a data property for volume. Can be
* overridden by using either a fixed number or a function for
* instrumentMapping.volume. Defaults to 1.
* @name Highcharts.PointInstrumentOptionsObject#maxVolume
* @type {number|undefined}
*//**
* The minimum frequency for a note when using a data property for frequency.
* Can be overridden by using either a fixed number or a function for
* instrumentMapping.frequency. Defaults to 220.
* @name Highcharts.PointInstrumentOptionsObject#minFrequency
* @type {number|undefined}
*//**
* The maximum frequency for a note when using a data property for frequency.
* Can be overridden by using either a fixed number or a function for
* instrumentMapping.frequency. Defaults to 2200.
* @name Highcharts.PointInstrumentOptionsObject#maxFrequency
* @type {number|undefined}
*/
/**
* An instrument definition for a point, specifying the instrument to play and
* how to play it.
*
* @interface Highcharts.PointInstrumentObject
*//**
* An Instrument instance or the name of the instrument in the
* Highcharts.sonification.instruments map.
* @name Highcharts.PointInstrumentObject#instrument
* @type {Highcharts.Instrument|string}
*//**
* Mapping of instrument parameters for this instrument.
* @name Highcharts.PointInstrumentObject#instrumentMapping
* @type {Highcharts.PointInstrumentMappingObject}
*//**
* Options for this instrument.
* @name Highcharts.PointInstrumentObject#instrumentOptions
* @type {Highcharts.PointInstrumentOptionsObject|undefined}
*//**
* Callback to call when the instrument has stopped playing.
* @name Highcharts.PointInstrumentObject#onEnd
* @type {Function|undefined}
*/
/**
* Options for sonifying a point.
* @interface Highcharts.PointSonifyOptionsObject
*//**
* The instrument definitions for this point.
* @name Highcharts.PointSonifyOptionsObject#instruments
* @type {Array<Highcharts.PointInstrumentObject>}
*//**
* Optionally provide the minimum/maximum values for the points. If this is not
* supplied, it is calculated from the points in the chart on demand. This
* option is supplied in the following format, as a map of point data properties
* to objects with min/max values:
* ```js
* dataExtremes: {
* y: {
* min: 0,
* max: 100
* },
* z: {
* min: -10,
* max: 10
* }
* // Properties used and not provided are calculated on demand
* }
* ```
* @name Highcharts.PointSonifyOptionsObject#dataExtremes
* @type {object|undefined}
*//**
* Callback called when the sonification has finished.
* @name Highcharts.PointSonifyOptionsObject#onEnd
* @type {Function|undefined}
*/
'use strict';
import H from '../../parts/Globals.js';
import utilities from 'utilities.js';
// Defaults for the instrument options
// NOTE: Also change defaults in Highcharts.PointInstrumentOptionsObject if
// making changes here.
var defaultInstrumentOptions = {
minDuration: 20,
maxDuration: 2000,
minVolume: 0.1,
maxVolume: 1,
minPan: -1,
maxPan: 1,
minFrequency: 220,
maxFrequency: 2200
};
/**
* Sonify a single point.
*
* @sample highcharts/sonification/point-basic/
* Click on points to sonify
* @sample highcharts/sonification/point-advanced/
* Sonify bubbles
*
* @requires module:modules/sonification
*
* @function Highcharts.Point#sonify
*
* @param {Highcharts.PointSonifyOptionsObject} options
* Options for the sonification of the point.
*/
function pointSonify(options) {
var point = this,
chart = point.series.chart,
dataExtremes = options.dataExtremes || {},
// Get the value to pass to instrument.play from the mapping value
// passed in.
getMappingValue = function (
value, makeFunction, allowedExtremes, allowedValues
) {
// Fixed number, just use that
if (typeof value === 'number' || value === undefined) {
return value;
}
// Function. Return new function if we try to use callback,
// otherwise call it now and return result.
if (typeof value === 'function') {
return makeFunction ?
function (time) {
return value(point, dataExtremes, time);
} :
value(point, dataExtremes);
}
// String, this is a data prop.
if (typeof value === 'string') {
// Find data extremes if we don't have them
dataExtremes[value] = dataExtremes[value] ||
utilities.calculateDataExtremes(
point.series.chart, value
);
// Find the value
return utilities.virtualAxisTranslate(
H.pick(point[value], point.options[value]),
dataExtremes[value],
allowedExtremes,
allowedValues
);
}
};
// Register playing point on chart
chart.sonification.currentlyPlayingPoint = point;
// Keep track of instruments playing
point.sonification = point.sonification || {};
point.sonification.instrumentsPlaying =
point.sonification.instrumentsPlaying || {};
// Register signal handler for the point
var signalHandler = point.sonification.signalHandler =
point.sonification.signalHandler ||
new utilities.SignalHandler(['onEnd']);
signalHandler.clearSignalCallbacks();
signalHandler.registerSignalCallbacks({ onEnd: options.onEnd });
// If we have a null point or invisible point, just return
if (point.isNull || !point.visible || !point.series.visible) {
signalHandler.emitSignal('onEnd');
return;
}
// Go through instruments and play them
options.instruments.forEach(function (instrumentDefinition) {
var instrument = typeof instrumentDefinition.instrument === 'string' ?
H.sonification.instruments[instrumentDefinition.instrument] :
instrumentDefinition.instrument,
mapping = instrumentDefinition.instrumentMapping || {},
extremes = H.merge(
defaultInstrumentOptions,
instrumentDefinition.instrumentOptions
),
id = instrument.id,
onEnd = function (cancelled) {
// Instrument on end
if (instrumentDefinition.onEnd) {
instrumentDefinition.onEnd.apply(this, arguments);
}
// Remove currently playing point reference on chart
if (
chart.sonification &&
chart.sonification.currentlyPlayingPoint
) {
delete chart.sonification.currentlyPlayingPoint;
}
// Remove reference from instruments playing
if (
point.sonification && point.sonification.instrumentsPlaying
) {
delete point.sonification.instrumentsPlaying[id];
// This was the last instrument?
if (
!Object.keys(
point.sonification.instrumentsPlaying
).length
) {
signalHandler.emitSignal('onEnd', cancelled);
}
}
};
// Play the note on the instrument
if (instrument && instrument.play) {
point.sonification.instrumentsPlaying[instrument.id] = instrument;
instrument.play({
frequency: getMappingValue(
mapping.frequency,
true,
{ min: extremes.minFrequency, max: extremes.maxFrequency }
),
duration: getMappingValue(
mapping.duration,
false,
{ min: extremes.minDuration, max: extremes.maxDuration }
),
pan: getMappingValue(
mapping.pan,
true,
{ min: extremes.minPan, max: extremes.maxPan }
),
volume: getMappingValue(
mapping.volume,
true,
{ min: extremes.minVolume, max: extremes.maxVolume }
),
onEnd: onEnd,
minFrequency: extremes.minFrequency,
maxFrequency: extremes.maxFrequency
});
} else {
H.error(30);
}
});
}
/**
* Cancel sonification of a point. Calls onEnd functions.
*
* @requires module:modules/sonification
*
* @function Highcharts.Point#cancelSonify
*
* @param {boolean} [fadeOut=false]
* Whether or not to fade out as we stop. If false, the points are
* cancelled synchronously.
*/
function pointCancelSonify(fadeOut) {
var playing = this.sonification && this.sonification.instrumentsPlaying,
instrIds = playing && Object.keys(playing);
if (instrIds && instrIds.length) {
instrIds.forEach(function (instr) {
playing[instr].stop(!fadeOut, null, 'cancelled');
});
this.sonification.instrumentsPlaying = {};
this.sonification.signalHandler.emitSignal('onEnd', 'cancelled');
}
}
var pointSonifyFunctions = {
pointSonify: pointSonify,
pointCancelSonify: pointCancelSonify
};
export default pointSonifyFunctions;

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/* *
*
* (c) 2009-2018 Øystein Moseng
*
* Sonification module for Highcharts
*
* License: www.highcharts.com/license
*
* */
'use strict';
import H from '../../parts/Globals.js';
import Instrument from 'Instrument.js';
import instruments from 'instrumentDefinitions.js';
import Earcon from 'Earcon.js';
import pointSonifyFunctions from 'pointSonify.js';
import chartSonifyFunctions from 'chartSonify.js';
import utilities from 'utilities.js';
import TimelineClasses from 'Timeline.js';
// Expose on the Highcharts object
/**
* Global classes and objects related to sonification.
*
* @requires module:modules/sonification
*
* @name Highcharts.sonification
* @type {Highcharts.SonificationObject}
*/
/**
* Global classes and objects related to sonification.
*
* @requires module:modules/sonification
*
* @interface Highcharts.SonificationObject
*//**
* Note fade-out-time in milliseconds. Most notes are faded out quickly by
* default if there is time. This is to avoid abrupt stops which will cause
* perceived clicks.
* @name Highcharts.SonificationObject#fadeOutDuration
* @type {number}
*//**
* Utility functions.
* @name Highcharts.SonificationObject#utilities
* @private
* @type {object}
*//**
* The Instrument class.
* @name Highcharts.SonificationObject#Instrument
* @type {Function}
*//**
* Predefined instruments, given as an object with a map between the instrument
* name and the Highcharts.Instrument object.
* @name Highcharts.SonificationObject#instruments
* @type {Object}
*//**
* The Earcon class.
* @name Highcharts.SonificationObject#Earcon
* @type {Function}
*//**
* The TimelineEvent class.
* @private
* @name Highcharts.SonificationObject#TimelineEvent
* @type {Function}
*//**
* The TimelinePath class.
* @private
* @name Highcharts.SonificationObject#TimelinePath
* @type {Function}
*//**
* The Timeline class.
* @private
* @name Highcharts.SonificationObject#Timeline
* @type {Function}
*/
H.sonification = {
fadeOutDuration: 20,
// Classes and functions
utilities: utilities,
Instrument: Instrument,
instruments: instruments,
Earcon: Earcon,
TimelineEvent: TimelineClasses.TimelineEvent,
TimelinePath: TimelineClasses.TimelinePath,
Timeline: TimelineClasses.Timeline
};
// Chart specific
H.Point.prototype.sonify = pointSonifyFunctions.pointSonify;
H.Point.prototype.cancelSonify = pointSonifyFunctions.pointCancelSonify;
H.Series.prototype.sonify = chartSonifyFunctions.seriesSonify;
H.extend(H.Chart.prototype, {
sonify: chartSonifyFunctions.chartSonify,
pauseSonify: chartSonifyFunctions.pause,
resumeSonify: chartSonifyFunctions.resume,
rewindSonify: chartSonifyFunctions.rewind,
cancelSonify: chartSonifyFunctions.cancel,
getCurrentSonifyPoints: chartSonifyFunctions.getCurrentPoints,
setSonifyCursor: chartSonifyFunctions.setCursor,
resetSonifyCursor: chartSonifyFunctions.resetCursor,
resetSonifyCursorEnd: chartSonifyFunctions.resetCursorEnd,
sonification: {}
});

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/* *
*
* (c) 2009-2018 Øystein Moseng
*
* Utility functions for sonification.
*
* License: www.highcharts.com/license
*
* */
'use strict';
import musicalFrequencies from 'musicalFrequencies.js';
/**
* The SignalHandler class. Stores signal callbacks (event handlers), and
* provides an interface to register them, and emit signals. The word "event" is
* not used to avoid confusion with TimelineEvents.
*
* @requires module:modules/sonification
*
* @private
* @class
* @name Highcharts.SignalHandler
*
* @param {Array<string>} supportedSignals
* List of supported signal names.
*/
function SignalHandler(supportedSignals) {
this.init(supportedSignals || []);
}
SignalHandler.prototype.init = function (supportedSignals) {
this.supportedSignals = supportedSignals;
this.signals = {};
};
/**
* Register a set of signal callbacks with this SignalHandler.
* Multiple signal callbacks can be registered for the same signal.
* @private
* @param {object} signals - An object that contains a mapping from the signal
* name to the callbacks. Only supported events are considered.
*/
SignalHandler.prototype.registerSignalCallbacks = function (signals) {
var signalHandler = this;
signalHandler.supportedSignals.forEach(function (supportedSignal) {
if (signals[supportedSignal]) {
(
signalHandler.signals[supportedSignal] =
signalHandler.signals[supportedSignal] || []
).push(
signals[supportedSignal]
);
}
});
};
/**
* Clear signal callbacks, optionally by name.
* @private
* @param {Array<string>} [signalNames] - A list of signal names to clear. If
* not supplied, all signal callbacks are removed.
*/
SignalHandler.prototype.clearSignalCallbacks = function (signalNames) {
var signalHandler = this;
if (signalNames) {
signalNames.forEach(function (signalName) {
if (signalHandler.signals[signalName]) {
delete signalHandler.signals[signalName];
}
});
} else {
signalHandler.signals = {};
}
};
/**
* Emit a signal. Does nothing if the signal does not exist, or has no
* registered callbacks.
* @private
* @param {string} signalNames - Name of signal to emit.
* @param {*} data - Data to pass to the callback.
*/
SignalHandler.prototype.emitSignal = function (signalName, data) {
var retval;
if (this.signals[signalName]) {
this.signals[signalName].forEach(function (handler) {
var result = handler(data);
retval = result !== undefined ? result : retval;
});
}
return retval;
};
var utilities = {
// List of musical frequencies from C0 to C8
musicalFrequencies: musicalFrequencies,
// SignalHandler class
SignalHandler: SignalHandler,
/**
* Get a musical scale by specifying the semitones from 1-12 to include.
* 1: C, 2: C#, 3: D, 4: D#, 5: E, 6: F,
* 7: F#, 8: G, 9: G#, 10: A, 11: Bb, 12: B
* @private
* @param {Array<number>} semitones - Array of semitones from 1-12 to
* include in the scale. Duplicate entries are ignored.
* @return {Array<number>} Array of frequencies from C0 to C8 that are
* included in this scale.
*/
getMusicalScale: function (semitones) {
return musicalFrequencies.filter(function (freq, i) {
var interval = i % 12 + 1;
return semitones.some(function (allowedInterval) {
return allowedInterval === interval;
});
});
},
/**
* Calculate the extreme values in a chart for a data prop.
* @private
* @param {Highcharts.Chart} chart - The chart
* @param {string} prop - The data prop to find extremes for
* @return {object} Object with min and max properties
*/
calculateDataExtremes: function (chart, prop) {
return chart.series.reduce(function (extremes, series) {
// We use cropped points rather than series.data here, to allow
// users to zoom in for better fidelity.
series.points.forEach(function (point) {
var val = point[prop] !== undefined ?
point[prop] : point.options[prop];
extremes.min = Math.min(extremes.min, val);
extremes.max = Math.max(extremes.max, val);
});
return extremes;
}, {
min: Infinity,
max: -Infinity
});
},
/**
* Translate a value on a virtual axis. Creates a new, virtual, axis with a
* min and max, and maps the relative value onto this axis.
* @private
* @param {number} value - The relative data value to translate.
* @param {object} dataExtremes - The possible extremes for this value.
* @param {object} limits - Limits for the virtual axis.
* @return {number} The value mapped to the virtual axis.
*/
virtualAxisTranslate: function (value, dataExtremes, limits) {
var lenValueAxis = dataExtremes.max - dataExtremes.min,
lenVirtualAxis = limits.max - limits.min,
virtualAxisValue = limits.min +
lenVirtualAxis * (value - dataExtremes.min) / lenValueAxis;
return lenValueAxis > 0 ?
Math.max(Math.min(virtualAxisValue, limits.max), limits.min) :
limits.min;
}
};
export default utilities;