mirror of
https://github.com/9x/sheetmusictrainer.git
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2ed1a88184
- Phrase Mode (sync to metronome): the run's scheduler is the single click source (with count-in); the metronome widget is muted and its pendulum mirrors the run's beats via the new phraseBeatBus (audio-timestamp scheduled). No more double clicks; clicks only while the run is active (phraseRunBus gates the widget's own ticking). - Schedule entries now carry continuous beat index + accent flag (downbeats accented, count-in beat 1 accented). - 'At your pace': optional click via the metronome toggle (kept explicit). - Metronome widget: gate prop; in gated mode it listens to the beat bus instead of running its own scheduler.
27 lines
707 B
TypeScript
27 lines
707 B
TypeScript
/**
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* Tiny pub/sub for the phrase trainer's running state.
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*
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* Lets the (global) metronome widget gate its pendulum/click on the phrase
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* run: in Phrase Mode the metronome should only be active while the trainer
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* is counting in or playing, not while idle.
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*/
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type Listener = (running: boolean) => void;
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const listeners = new Set<Listener>();
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let running = false;
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export const phraseRunBus = {
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set(v: boolean): void {
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if (v === running) return;
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running = v;
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listeners.forEach(l => l(v));
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},
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get(): boolean {
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return running;
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},
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subscribe(l: Listener): () => void {
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listeners.add(l);
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return () => { listeners.delete(l); };
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},
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};
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