private void GameBoardView_Draw(GameBoardView gameBoard, SkiaSharp.SKSurface args)
{
using (var paint = new SKPaint()
{
IsAntialias = true, Color = SKColors.Red, StrokeWidth = 2, Style = SKPaintStyle.Stroke
})
{
args.Canvas.DrawCircle(
100,
100,
48,
paint);
}
}
private void canvasView_PaintSurface(object sender, SkiaSharp.Views.Forms.SKPaintSurfaceEventArgs e)
{
SkiaSharp.SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear(SKColors.LightGoldenrodYellow);
var width = e.Info.Width;
var height = e.Info.Height;
DateTime dateTime = DateTime.Now;
canvas.Translate(width / 2, height / 2);
canvas.Scale(width / 300f);
canvas.DrawCircle(0, 0, 100, blueFillPaint);
for (int angle = 0; angle < 360; angle += 6)
{
canvas.DrawCircle(0, -90, angle % 30 == 0 ? 4 : 2, whitefillpaint);
canvas.RotateDegrees(6);
}
canvas.Save();
canvas.RotateDegrees(30 * dateTime.Hour + dateTime.Minute / 2f);
whiteStrokePaint.StrokeWidth = 12;
canvas.DrawLine(0, 0, 0, -50, whiteStrokePaint);
canvas.Restore();
canvas.RotateDegrees(6 * dateTime.Minute + dateTime.Second / 10f);
whiteStrokePaint.StrokeWidth = 8;
canvas.DrawLine(0, 0, 0, -70, whiteStrokePaint);
canvas.Restore();
canvas.Save();
float seconds = dateTime.Second + dateTime.Millisecond / 1000f;
canvas.RotateDegrees(6 * seconds);
whiteStrokePaint.StrokeWidth = 2;
canvas.DrawLine(0, 10, 0, -90, whiteStrokePaint);
canvas.Restore();
}
public BitmapDrawingContext(SKSurface surface) : base(surface.Canvas)
{
_surface = surface;
}
protected override void OnDraw(SKSurface surface, SKImageInfo info)
{
base.OnDraw(surface, info);
if (!_viewportInitialized)
InitializeViewport();
if (!_viewportInitialized)
return;
_renderer.Render(surface.Canvas, _map.Viewport, _map.Layers, _map.BackColor);
}
// DrawSurface
public void DrawSurface(SKSurface surface, SKPoint p, SKPaint paint = null)
{
DrawSurface(surface, p.X, p.Y, paint);
}