protected override void OnPaintSurface(SkiaSharp.Views.UWP.SKPaintSurfaceEventArgs e)
{
base.OnPaintSurface(e);
// the control is being repainted, let the user know
controller.OnPaintSurface(new SKPaintSurfaceEventArgs(e.Surface, e.Info));
}
private void SKCanvasView_PaintSurface(object sender, SkiaSharp.Views.UWP.SKPaintSurfaceEventArgs e)
{
var paint = new SKPaint
{
Color = SKColors.Black,
IsAntialias = true,
Style = SKPaintStyle.Fill,
TextAlign = SKTextAlign.Center,
TextSize = 24
};
Sketch.SkiaManager.OnPaintSurface(e.Surface.Canvas);
}
private void skiaCanvas_PaintSurface(object sender, SkiaSharp.Views.UWP.SKPaintSurfaceEventArgs e)
{
var surface = e.Surface;
var surfaceWidth = e.Info.Width;
var surfaceHeight = e.Info.Height;
var canvas = surface.Canvas;
/*
* if (snapshot == null)
* {
* canvas.Clear();
* planeView.Render(canvas);
* snapshot = surface.Snapshot();
* SaveSnapshot();
* }
* else
* {
* canvas.Clear();
* canvas.DrawImage(snapshot, new SKPoint(0, 0));
* }
*/
var rect = SKRect.Create(10, 10, surfaceWidth - 20, surfaceHeight - 20);
// the brush (fill with blue)
var paint = new SKPaint
{
Style = SKPaintStyle.Fill,
Color = SKColors.AliceBlue
};
canvas.ResetMatrix();
// canvas.Translate(dx, dy);
canvas.DrawRect(rect, paint);
canvas.DrawBitmap(bitmap, 20, 20);
canvas.Flush();
}
private void Canvas_PaintSurface(object sender, SkiaSharp.Views.UWP.SKPaintSurfaceEventArgs e)
{
e.Surface.Canvas.Clear();
// Handle the text color
byte r = 0, g = 0, b = 0, a = 255;
if (Foreground is SolidColorBrush)
{
var fore = (Foreground as SolidColorBrush).Color;
r = fore.R;
g = fore.G;
b = fore.B;
a = fore.A;
}
SkiaSharp.SKColor textColor = new SkiaSharp.SKColor(r, g, b, a);
// Handle the background color
r = 255; g = 255; b = 255; a = 255;
if (Background is SolidColorBrush)
{
var back = (Background as SolidColorBrush).Color;
r = back.R;
g = back.G;
b = back.B;
a = back.A;
}
SkiaSharp.SKColor backColor = new SkiaSharp.SKColor(r, g, b, a);
e.Surface.Canvas.DrawColor(backColor);
var painter = new CSharpMath.SkiaSharp.MathPainter
{
LaTeX = LaTeXString,
FontSize = (float)FontSize,
TextColor = textColor,
};
painter.Draw(e.Surface.Canvas);
}
private void ViewOnPaintSurface(object sender, SkiaSharp.Views.UWP.SKPaintSurfaceEventArgs skPaintSurfaceEventArgs)
{
Element.Draw(skPaintSurfaceEventArgs.Surface, skPaintSurfaceEventArgs.Info);
}
private void OnPaintForeground(object sender, SkiaSharp.Views.UWP.SKPaintSurfaceEventArgs e)
{
e.Surface.Canvas.Clear(SKColors.Transparent);
InkCanvasView?.PaintForeground(e.Surface.Canvas);
}
