Win2DRenderer.cs

public sealed class CanvasControlWrapper : ICanvasControl
{
  public event EventHandler<CanvasDrawEventArgs> Draw;
  
  private void OnDraw(CanvasDrawEventArgs e)
  {
    Draw?.Invoke(this, e);
  }
      
  public CanvasControlWrapper(CanvasControl canvasControl)
  {
    canvasControl.Draw += (sender, args) =>
    {
      OnDraw(args);
    };
  }
}

class Win2DRenderer
{
  private void Canvas_Draw(object sender, CanvasDrawEventArgs args)
  {
      Render(args.DrawingSession);
  }
  
  private void Render(CanvasDrawingSession session)
  {
    if (layout != null)
    {
      session.Transform = transform;
  
      // Render it
    }
  }
}