ComponentFactory.Krypton.Toolkit.RenderStandard.DrawRibbonTabTracking2007 C# (CSharp) Method

        protected virtual IDisposable DrawRibbonTabTracking2007(PaletteRibbonShape shape,
                                                                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);

                bool generate = true;
                MementoRibbonTabTracking2007 cache;

                // Access a cache instance and decide if cache resources need generating
                if ((memento == null) || !(memento is MementoRibbonTabTracking2007))
                {
                    if (memento != null)
                        memento.Dispose();

                    cache = new MementoRibbonTabTracking2007(rect, c1, c2, orientation);
                    memento = cache;
                }
                else
                {
                    cache = (MementoRibbonTabTracking2007)memento;
                    generate = !cache.UseCachedValues(rect, c1, c2, orientation);
                }

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

                    switch (orientation)
                    {
                        case VisualOrientation.Top:
                            DrawRibbonTabTrackingTop2007(rect, c1, c2, cache);
                            break;
                        case VisualOrientation.Left:
                            DrawRibbonTabTrackingLeft2007(rect, c1, c2, cache);
                            break;
                        case VisualOrientation.Right:
                            DrawRibbonTabTrackingRight2007(rect, c1, c2, cache);
                            break;
                        case VisualOrientation.Bottom:
                            DrawRibbonTabTrackingBottom2007(rect, c1, c2, cache);
                            break;
                    }
                }

                // Draw the left and right sides with light version of tracking color
                context.Graphics.FillRectangle(cache.half1LeftBrush, cache.half1Rect);
                context.Graphics.FillRectangle(cache.half1RightBrush, cache.half1Rect);

                // Draw over with glassy effect
                context.Graphics.FillRectangle(cache.half1LightBrush, cache.half1Rect);

                //// Use a solid fill for the bottom half
                context.Graphics.FillRectangle(cache.half2Brush, cache.half2Rect);

                // Cannot draw a path that contains a zero sized element
                if ((cache.ellipseRect.Width > 0) && (cache.ellipseRect.Height > 0))
                {
                    // Draw twice to get a deeper color effect, once is to pale
                    context.Graphics.FillRectangle(cache.ellipseBrush, cache.half2RectF);
                    context.Graphics.FillRectangle(cache.ellipseBrush, cache.half2RectF);
                }

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

                switch (orientation)
                {
                    case VisualOrientation.Top:
                        DrawRibbonTabTrackingTopDraw2007(rect, cache, context.Graphics);
                        break;
                    case VisualOrientation.Left:
                        DrawRibbonTabTrackingLeftDraw2007(rect, cache, context.Graphics);
                        break;
                    case VisualOrientation.Right:
                        DrawRibbonTabTrackingRightDraw2007(rect, cache, context.Graphics);
                        break;
                    case VisualOrientation.Bottom:
                        DrawRibbonTabTrackingBottomDraw2007(rect, cache, context.Graphics);
                        break;
                }

                context.Graphics.DrawPath(cache.topPen, cache.topPath);
            }

            return memento;
        }