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import type { ExtensionMetadata } from '@pixi/extensions';
import { ExtensionType } from '@pixi/extensions';
import { UPDATE_PRIORITY } from './const';
import { Ticker } from './Ticker';
/**
* Middleware for for Application Ticker.
* @example
* import {TickerPlugin} from '@pixi/ticker';
* import {Application} from '@pixi/app';
* import {extensions} from '@pixi/extensions';
* extensions.add(TickerPlugin);
* @class
* @memberof PIXI
*/
export class TickerPlugin
{
/** @ignore */
static extension: ExtensionMetadata = ExtensionType.Application;
static start: () => void;
static stop: () => void;
static _ticker: Ticker;
static ticker: Ticker;
/**
* Initialize the plugin with scope of application instance
* @static
* @private
* @param {object} [options] - See application options
*/
static init(options?: GlobalMixins.IApplicationOptions): void
{
// Set default
options = Object.assign({
autoStart: true,
sharedTicker: false,
}, options);
// Create ticker setter
Object.defineProperty(this, 'ticker',
{
set(ticker)
{
if (this._ticker)
{
this._ticker.remove(this.render, this);
}
this._ticker = ticker;
if (ticker)
{
ticker.add(this.render, this, UPDATE_PRIORITY.LOW);
}
},
get()
{
return this._ticker;
},
});
/**
* Convenience method for stopping the render.
* @method
* @memberof PIXI.Application
* @instance
*/
this.stop = (): void =>
{
this._ticker.stop();
};
/**
* Convenience method for starting the render.
* @method
* @memberof PIXI.Application
* @instance
*/
this.start = (): void =>
{
this._ticker.start();
};
/**
* Internal reference to the ticker.
* @type {PIXI.Ticker}
* @name _ticker
* @memberof PIXI.Application#
* @private
*/
this._ticker = null;
/**
* Ticker for doing render updates.
* @type {PIXI.Ticker}
* @name ticker
* @memberof PIXI.Application#
* @default PIXI.Ticker.shared
*/
this.ticker = options.sharedTicker ? Ticker.shared : new Ticker();
// Start the rendering
if (options.autoStart)
{
this.start();
}
}
/**
* Clean up the ticker, scoped to application.
* @static
* @private
*/
static destroy(): void
{
if (this._ticker)
{
const oldTicker = this._ticker;
this.ticker = null;
oldTicker.destroy();
}
}
}