public requestAnimationFrame()

in source/SkiaSharp.Views/SkiaSharp.Views.Blazor/wwwroot/SKHtmlCanvas.ts [134:164]

• 20 lines of code
• 8 McCabe index (conditional complexity)

	public requestAnimationFrame(renderLoop?: boolean, width?: number, height?: number) {
		// optionally update the render loop
		if (renderLoop !== undefined && this.renderLoopEnabled !== renderLoop)
			this.setEnableRenderLoop(renderLoop);

		// make sure the canvas is scaled correctly for the drawing
		if (width && height) {
			this.htmlCanvas.width = width;
			this.htmlCanvas.height = height;
		}

		// skip because we have a render loop
		if (this.renderLoopRequest !== 0)
			return;

		// add the draw to the next frame
		this.renderLoopRequest = window.requestAnimationFrame(() => {
			if (this.glInfo) {
				// make current
				const GL = SKHtmlCanvas.getGL();
				GL.makeContextCurrent(this.glInfo.context);
			}

			this.renderFrameCallback.invokeMethod('Invoke');
			this.renderLoopRequest = 0;

			// we may want to draw the next frame
			if (this.renderLoopEnabled)
				this.requestAnimationFrame();
		});
	}