private static void RenderFrame(object sender, SKSurface surface)
{
SkiaGLWidget gLWidget = sender as SkiaGLWidget;
SKCanvas canvas = surface.Canvas;
canvas.Clear();
SKPoint center = new SKPoint(gLWidget.Allocation.Width / 2, gLWidget.Allocation.Height / 2);
float radius = Math.Min(gLWidget.Allocation.Width, gLWidget.Allocation.Height) / 4;
SKPath path = new SKPath
{
FillType = SKPathFillType.EvenOdd
};
path.AddCircle(center.X - radius / 2, center.Y - radius / 2, radius);
path.AddCircle(center.X - radius / 2, center.Y + radius / 2, radius);
path.AddCircle(center.X + radius / 2, center.Y - radius / 2, radius);
path.AddCircle(center.X + radius / 2, center.Y + radius / 2, radius);
SKPaint paint = new SKPaint()
{
Style = SKPaintStyle.Fill,
Color = SKColors.Cyan
};
canvas.DrawPath(path, paint);
paint.Style = SKPaintStyle.Stroke;
paint.StrokeWidth = 10;
paint.Color = SKColors.Magenta;
canvas.DrawPath(path, paint);
}
public static void Main(string[] args)
{
Toolkit.Init();
Application.Init();
var mode = GraphicsMode.Default;
MainWindow win = new MainWindow();
var glWidget = new SkiaGLWidget();
win.DeleteEvent += (o, a) => { glWidget.Dispose(); };
glWidget.RenderFrame += RenderFrame;
win.Add(glWidget);
win.ShowAll();
Application.Run();
}