vexflow
Version:
A JavaScript library for rendering music notation and guitar tablature.
61 lines (60 loc) • 1.69 kB
JavaScript
import { Note } from './note.js';
import { Barline, BarlineType } from './stavebarline.js';
import { log } from './util.js';
function L(...args) {
if (BarNote.DEBUG)
log('Vex.Flow.BarNote', args);
}
class BarNote extends Note {
static get CATEGORY() {
return "BarNote";
}
constructor(type = BarlineType.SINGLE) {
super({ duration: 'b' });
this.metrics = {
widths: {},
};
const TYPE = BarlineType;
this.metrics.widths = {
[TYPE.SINGLE]: 8,
[TYPE.DOUBLE]: 12,
[TYPE.END]: 15,
[TYPE.REPEAT_BEGIN]: 14,
[TYPE.REPEAT_END]: 14,
[TYPE.REPEAT_BOTH]: 18,
[TYPE.NONE]: 0,
};
this.ignore_ticks = true;
this.setType(type);
this.barline = new Barline(type);
}
getType() {
return this.type;
}
setType(type) {
this.type = typeof type === 'string' ? Barline.typeString[type] : type;
this.setWidth(this.metrics.widths[this.type]);
return this;
}
addToModifierContext(mc) {
return this;
}
preFormat() {
this.preFormatted = true;
return this;
}
draw() {
const ctx = this.checkContext();
L('Rendering bar line at: ', this.getAbsoluteX());
this.applyStyle(ctx);
ctx.openGroup('barnote', this.getAttribute('id'));
this.barline.setType(this.type);
this.barline.setX(this.getAbsoluteX());
this.barline.draw(this.checkStave());
ctx.closeGroup();
this.restoreStyle(ctx);
this.setRendered();
}
}
BarNote.DEBUG = false;
export { BarNote };