@stringsync/vexml/dist/esm/rendering/rest.js

MusicXML to Vexflow

import * as vexflow from 'vexflow';
import { Rect } from '../spatial';
export class Rest {
    config;
    log;
    document;
    key;
    constructor(config, log, document, key) {
        this.config = config;
        this.log = log;
        this.document = document;
        this.key = key;
    }
    render() {
        const rest = this.document.getRest(this.key);
        const isTabStave = this.document.isTabStave(this.key);
        const vexflowNote = isTabStave
            ? new vexflow.TabNote({
                positions: [{ str: 0, fret: '' }],
                duration: `${rest.durationType}r`,
                dots: rest.dotCount,
                alignCenter: this.shouldAlignCenter(),
            })
            : new vexflow.StaveNote({
                keys: this.getVexflowStaveKeys(),
                duration: `${rest.durationType}r`,
                dots: rest.dotCount,
                clef: this.document.getStave(this.key).signature.clef.sign,
                alignCenter: this.shouldAlignCenter(),
            });
        for (let index = 0; index < rest.dotCount; index++) {
            vexflow.Dot.buildAndAttach([vexflowNote]);
        }
        return {
            type: 'rest',
            key: this.key,
            rect: Rect.empty(), // placeholder
            vexflowNote: vexflowNote,
            beamId: rest.beamId,
            tupletIds: rest.tupletIds,
        };
    }
    getVexflowStaveKeys() {
        const rest = this.document.getRest(this.key);
        const displayPitch = rest.displayPitch;
        if (displayPitch) {
            return [`${displayPitch.step}/${displayPitch.octave}`];
        }
        const clef = this.document.getStave(this.key).signature.clef;
        if (clef.sign === 'bass') {
            return ['D/3'];
        }
        if (rest.durationType === '2') {
            return ['B/4'];
        }
        if (rest.durationType === '1') {
            return ['D/5'];
        }
        return ['B/4'];
    }
    shouldAlignCenter() {
        const voiceEntryCount = this.document.getVoiceEntryCount(this.key);
        if (voiceEntryCount > 1) {
            return false;
        }
        const rest = this.document.getRest(this.key);
        if (rest.durationType === '1') {
            return true;
        }
        if (rest.durationType === '2') {
            return true;
        }
        return false;
    }
}