@daign/2d-graphics/dist/lib/application/updateManager.js

Two dimensional graphics library that implements the daign-2d-pipeline.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.UpdateManager = void 0;
var observable_1 = require("@daign/observable");
/**
 * Class that manages the steps to update and redraw the graphic.
 */
var UpdateManager = /** @class */ (function () {
    /**
     * Constructor.
     */
    function UpdateManager() {
        // Event that other components can use to get informed about a redraw.
        this.redrawEvent = new observable_1.EventEmitter();
        // The event that lets the control layer know when to redraw the controls.
        this.redrawControlsSignal = new observable_1.UnicastEventEmitter();
        // The event that the render function subscribes to.
        this.renderSignal = new observable_1.UnicastEventEmitter();
    }
    /**
     * Set a callback that gets informed when a redraw event was started.
     * @param callback - The callback that will be called when a redraw event was started.
     */
    UpdateManager.prototype.subscribeToRedrawEvent = function (callback) {
        this.redrawEvent.subscribeToChanges(callback);
    };
    /**
     * Set the callback that redraws the control layer.
     * @param callback - The callback that redraws the control layer.
     */
    UpdateManager.prototype.setRedrawControlsFunction = function (callback) {
        this.redrawControlsSignal.setObserver(callback);
    };
    /**
     * Set the callback that renders the graphic.
     * @param callback - The callback that renders the graphic.
     */
    UpdateManager.prototype.setRenderFunction = function (callback) {
        this.renderSignal.setObserver(callback);
    };
    /**
     * Redraw and render the application.
     */
    UpdateManager.prototype.redraw = function () {
        // Notify components that want to be informed about a redraw event.
        this.redrawEvent.emit();
        // Redraw the controls.
        this.redrawControlsSignal.emit();
        // Render the graphic.
        this.renderSignal.emit();
    };
    return UpdateManager;
}());
exports.UpdateManager = UpdateManager;