ComponentFactory.Krypton.Toolkit.RenderStandard.DrawGridRowGlyph C# (CSharp) Method

        public override Rectangle DrawGridRowGlyph(RenderContext context,
                                                   GridRowGlyph rowGlyph,
                                                   Rectangle cellRect,
                                                   IPaletteContent paletteContent,
                                                   PaletteState state,
                                                   bool rtl)
        {
            Debug.Assert(context != null);
            Debug.Assert(paletteContent != null);

            // Get the appropriate each to draw
            Image rowImage = null;

            switch (rowGlyph)
            {
                case GridRowGlyph.ArrowStar:
                    rowImage = _gridRowIndicators.Images[rtl ? 4 : 0];
                    break;
                case GridRowGlyph.Star:
                    rowImage = _gridRowIndicators.Images[rtl ? 5 : 1];
                    break;
                case GridRowGlyph.Pencil:
                    rowImage = _gridRowIndicators.Images[rtl ? 6 : 2];
                    break;
                case GridRowGlyph.Arrow:
                    rowImage = _gridRowIndicators.Images[rtl ? 7 : 3];
                    break;
            }

            // Is there enough room to draw the image?
            if ((rowImage != null) &&
                (rowImage.Width < cellRect.Width) &&
                (rowImage.Height < cellRect.Height))
            {
                // Find the drawing location of the image
                int y = cellRect.Top + (cellRect.Height - rowImage.Height) / 2;
                int x = (rtl ? cellRect.Right - rowImage.Width : cellRect.Left);

                // Grab the foreground color to use for the image
                Color imageColor = paletteContent.GetContentShortTextColor1(state);

                // Draw the image with remapping the image color to the foreground color
                using (ImageAttributes attribs = new ImageAttributes())
                {
                    ColorMap cm = new ColorMap();
                    cm.OldColor = Color.Black;
                    cm.NewColor = CommonHelper.MergeColors(imageColor, 0.75f, Color.Transparent, 0.25f);
                    attribs.SetRemapTable(new ColorMap[] { cm }, ColorAdjustType.Bitmap);

                    context.Graphics.DrawImage(rowImage,
                                               new Rectangle(x, y, rowImage.Width, rowImage.Height),
                                               0, 0, rowImage.Width, rowImage.Height,
                                               GraphicsUnit.Pixel, attribs);
                }

                // Reduce the cell rect by that used up
                cellRect.Width -= rowImage.Width;

                // With NOT rtl we need to move across to the right
                if (!rtl)
                    cellRect.X += rowImage.Width;
            }

            return cellRect;
        }