True Color coloring

[HSyr]

In my project I formerly used RichTextBoxwith code highlighting written by myself. Apart from highlighting language elements I also formatted the .NET Color.* items with their real color like this:

I switched from RichTextBox to the much better FastColoredTextBoxin my project. What is the best way to achieve the same Color formatting with your control?

Thank you for the recommendation.

[PavelTorgashov]

Make custom style like this:

    class ColorStyle : TextStyle
    {
        public ColorStyle(Brush foreBrush, Brush backgroundBrush, FontStyle fontStyle) : base(foreBrush, backgroundBrush, fontStyle)
        {
        }

        public override void Draw(Graphics gr, Point position, Range range)
        {
            //get color name
            var parts = range.Text.Split('.');
            var colorName = parts[parts.Length - 1];
            //create color
            var color = Color.FromName(colorName);
            //assugn color ro backgrouns brush
            (BackgroundBrush as SolidBrush).Color = color;
            //draw
            base.Draw(gr, position, range);
        }
    }

Then make highlighting:

        private ColorStyle colorStyle = new ColorStyle(Brushes.Black, Brushes.White, FontStyle.Regular);

        private void fctb_TextChanged(object sender, TextChangedEventArgs e)
        {
            e.ChangedRange.SetStyle(colorStyle, @"Color\.\w+");
        }

[HSyr]

Thank you very much. Works great! I end up with the following code changes:

class ColorStyle : TextStyle
{
  public ColorStyle ( Brush foreBrush, Brush backgroundBrush, FontStyle fontStyle ) : base( foreBrush, backgroundBrush, fontStyle ) { }

  public override void Draw ( Graphics gr, Point position, Range range )
  {
    Color color = Color.FromName( range.Text.Substring( range.Text.LastIndexOf( '.' ) + 1 ) );
    // Test whether the Color exists
    if ( color.A == 0 )
      color = Color.White;

    ( BackgroundBrush as SolidBrush ).Color = color;
    ( ForeBrush as SolidBrush ).Color = BlackOrWhite( color );
    base.Draw( gr, position, range );
  }

  public static Color BlackOrWhite ( Color color )
  {
    int light = 2126 * ( color.R * color.R ) + 7152 * ( color.G * color.G ) + 0722 * ( color.B * color.B );
    return light > 5000 * 256 * 256 ? Color.Black : Color.White;
  }
}

The rest is as you suggested.