ComponentFactory.Krypton.Toolkit.RenderStandard.DrawRibbonTabSelected2007 C# (CSharp) Method

        protected virtual IDisposable DrawRibbonTabSelected2007(RenderContext context, 
                                                                Rectangle rect,
                                                                PaletteState state,
                                                                IPaletteRibbonBack palette,
                                                                VisualOrientation orientation,
                                                                IDisposable memento)
        {
            if ((rect.Width > 0) && (rect.Height > 0))
            {
                Color c1 = palette.GetRibbonBackColor1(state);
                Color c2 = palette.GetRibbonBackColor2(state);
                Color c3 = palette.GetRibbonBackColor3(state);
                Color c4 = palette.GetRibbonBackColor4(state);
                Color c5 = palette.GetRibbonBackColor5(state);

                bool generate = true;
                MementoRibbonTabSelected2007 cache;

                // Access a cache instance and decide if cache resources need generating
                if ((memento == null) || !(memento is MementoRibbonTabSelected2007))
                {
                    if (memento != null)
                        memento.Dispose();

                    cache = new MementoRibbonTabSelected2007(rect, c1, c2, c3, c4, c5, orientation);
                    memento = cache;
                }
                else
                {
                    cache = (MementoRibbonTabSelected2007)memento;
                    generate = !cache.UseCachedValues(rect, c1, c2, c3, c4, c5, orientation);
                }

                // Do we need to generate the contents of the cache?
                if (generate)
                {
                    // Dispose of existing values
                    cache.Dispose();

                    switch (orientation)
                    {
                        case VisualOrientation.Top:
                            DrawRibbonTabSelectedTop2007(rect, c4, c5, cache);
                            break;
                        case VisualOrientation.Left:
                            DrawRibbonTabSelectedLeft2007(rect, c4, c5, cache);
                            break;
                        case VisualOrientation.Right:
                            DrawRibbonTabSelectedRight2007(rect, c4, c5, cache);
                            break;
                        case VisualOrientation.Bottom:
                            DrawRibbonTabSelectedBottom2007(rect, c4, c5, cache);
                            break;
                    }

                    cache.insideBrush = new SolidBrush(c3);
                    cache.outsidePen = new Pen(c1);
                    cache.middlePen = new Pen(c2);
                    cache.insidePen = new Pen(c3);
                    cache.centerPen = new Pen(c5);
                }

                // Fill the inside of the border
                context.Graphics.FillPath(cache.insideBrush, cache.outsidePath);

                // Draw the actual border
                using (AntiAlias aa = new AntiAlias(context.Graphics))
                    context.Graphics.DrawPath(cache.outsidePen, cache.outsidePath);

                switch (orientation)
                {
                    case VisualOrientation.Top:
                        DrawRibbonTabSelectedTopDraw2007(rect, cache, context.Graphics);
                        break;
                    case VisualOrientation.Left:
                        DrawRibbonTabSelectedLeftDraw2007(rect, cache, context.Graphics);
                        break;
                    case VisualOrientation.Right:
                        DrawRibbonTabSelectedRightDraw2007(rect, cache, context.Graphics);
                        break;
                    case VisualOrientation.Bottom:
                        DrawRibbonTabSelectedBottomDraw2007(rect, cache, context.Graphics);
                        break;
                }

                // Fill in the center as a vertical gradient from tto bottom
                context.Graphics.FillRectangle(cache.centerBrush, cache.centerRect);
            }

            return memento;
        }