protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var borderThing = new Rectangle(0, 8, Width - 8, Height - 16);
HSL half = Color;
half.Luminance = 0.5f;
ColorSpaceRenderer.GenerateColorSlider(e.Graphics, ColorSpaceHelper.HSLtoRGB(half).ToColor(), borderThing);
ControlPaint.DrawBorder3D(e.Graphics, borderThing, Border3DStyle.SunkenOuter);
float inc = (Height - 18) / 240.0f;
float invLum = (240 - _curLum);
e.Graphics.FillPolygon(Brushes.Black,
new[]
{
new Point(Width - 7, 6 + (int)(invLum * inc) + 2),
new Point(Width - 1, 12 + (int)(invLum * inc) + 2),
new Point(Width - 1, 0 + (int)(invLum * inc) + 2),
}
);
}
private void GenerateSquare()
{
BackgroundImage = ColorSpaceRenderer.GenerateColorSquare(Width, Height);
}