@stringsync/vexml
Version:
MusicXML to Vexflow
57 lines (56 loc) • 2.15 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.TextMeasurer = void 0;
const util = __importStar(require("../util"));
class TextMeasurer {
font;
constructor(font) {
this.font = font;
}
measure(text) {
const ctx = document.createElement('canvas').getContext('2d');
util.assertNotNull(ctx);
const fontSize = this.font.size || '16px';
const fontFamily = this.font.family || 'Arial, sans-serif';
ctx.font = `${fontSize} ${fontFamily}`;
const metrics = ctx.measureText(text);
return {
width: metrics.width,
approximateHeight: metrics.actualBoundingBoxAscent + metrics.actualBoundingBoxDescent,
};
}
}
exports.TextMeasurer = TextMeasurer;