@stringsync/vexml
Version:
MusicXML to Vexflow
83 lines (82 loc) • 3.03 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.Key = void 0;
const vexflow = __importStar(require("vexflow"));
const spatial_1 = require("../spatial");
const KEY_SIGNATURE_PADDING = 15;
/** Represents a musical key signature, not document key. */
class Key {
config;
log;
document;
key;
constructor(config, log, document, key) {
this.config = config;
this.log = log;
this.document = document;
this.key = key;
}
render() {
const vexflowKeySignature = this.getVexflowKeySignature();
return {
type: 'key',
key: this.key,
rect: spatial_1.Rect.empty(), // placeholder
width: this.getWidth(),
vexflowKeySignature,
};
}
getAlterations() {
const keySignature = this.document.getStave(this.key).signature.key;
const alterations = new Array();
if (Math.abs(keySignature.fifths) > 7) {
const additional = Math.abs(keySignature.fifths) - 7;
for (let index = 0; index < additional; index++) {
alterations.push(keySignature.fifths > 0 ? '##' : 'bb');
}
}
return alterations;
}
getWidth() {
const vexflowKeySignature = this.getVexflowKeySignature();
return vexflowKeySignature.getWidth() + KEY_SIGNATURE_PADDING;
}
getVexflowKeySignature() {
const keySignature = this.document.getStave(this.key).signature.key;
return new vexflow.KeySignature(keySignature.rootNote, keySignature.previousKey?.rootNote, this.getAlterations());
}
}
exports.Key = Key;