@stringsync/vexml/dist/cjs/rendering/pen.js

MusicXML to Vexflow

"use strict";
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.Pen = void 0;
const util = __importStar(require("../util"));
const spatial_1 = require("../spatial");
const util_1 = require("../util");
/**
 * Pen is a position tracker.
 *
 * The term "cursor" is overloaded in the codebase, so this is a simple alternative.
 */
class Pen {
    positions = new util_1.Stack();
    constructor(initialPosition = spatial_1.Point.origin()) {
        this.positions.push(initialPosition);
    }
    get x() {
        return this.position().x;
    }
    get y() {
        return this.position().y;
    }
    position() {
        const position = this.positions.peek();
        util.assertDefined(position);
        return position;
    }
    moveTo(point) {
        this.positions.pop();
        this.positions.push(new spatial_1.Point(point.x, point.y));
    }
    moveBy(opts) {
        const dx = opts.dx ?? 0;
        const dy = opts.dy ?? 0;
        const position = this.position();
        this.moveTo({ x: position.x + dx, y: position.y + dy });
    }
    clone() {
        const pen = new Pen();
        pen.positions = this.positions.clone();
        return pen;
    }
    save() {
        this.positions.push(this.position());
    }
    restore() {
        if (this.positions.size() > 1) {
            this.positions.pop();
        }
    }
}
exports.Pen = Pen;