ARCed.UI.VS2005DockPaneStrip.OnPaint C# (CSharp) Method

        protected override void OnPaint(PaintEventArgs e)
        {
            Rectangle rect = this.TabsRectangle;

            if (Appearance == DockPane.AppearanceStyle.Document)
            {
                rect.X -= DocumentTabGapLeft;

                // Add these values back in so that the DockStrip color is drawn
                // beneath the close button and window list button.
                rect.Width += DocumentTabGapLeft +
                    DocumentTabGapRight +
                    DocumentButtonGapRight +
                    this.ButtonClose.Width +
                    this.ButtonWindowList.Width;

                // It is possible depending on the DockPanel DocumentStyle to have
                // a Document without a DockStrip.
                if (rect.Width > 0 && rect.Height > 0)
                {
                    Color startColor = DockPane.DockPanel.Skin.DockPaneStripSkin.DocumentGradient.DockStripGradient.StartColor;
                    Color endColor = DockPane.DockPanel.Skin.DockPaneStripSkin.DocumentGradient.DockStripGradient.EndColor;
                    LinearGradientMode gradientMode = DockPane.DockPanel.Skin.DockPaneStripSkin.DocumentGradient.DockStripGradient.LinearGradientMode;
                    using (var brush = new LinearGradientBrush(rect, startColor, endColor, gradientMode))
                    {
                        e.Graphics.FillRectangle(brush, rect);
                    }
                }
            }
            else
            {
                Color startColor = DockPane.DockPanel.Skin.DockPaneStripSkin.ToolWindowGradient.DockStripGradient.StartColor;
                Color endColor = DockPane.DockPanel.Skin.DockPaneStripSkin.ToolWindowGradient.DockStripGradient.EndColor;
                LinearGradientMode gradientMode = DockPane.DockPanel.Skin.DockPaneStripSkin.ToolWindowGradient.DockStripGradient.LinearGradientMode;
                using (var brush = new LinearGradientBrush(rect, startColor, endColor, gradientMode))
                {
                    e.Graphics.FillRectangle(brush, rect);
                }
            }
            base.OnPaint(e);
            this.CalculateTabs();
            if (Appearance == DockPane.AppearanceStyle.Document && DockPane.ActiveContent != null)
            {
                if (this.EnsureDocumentTabVisible(DockPane.ActiveContent, false))
                    this.CalculateTabs();
            }

            this.DrawTabStrip(e.Graphics);
        }