Source/Ribbon/Office2007RibbonControlPainter.cs

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using System;
using System.Drawing;
using System.Text;
using System.Drawing.Drawing2D;
using System.Collections;
using System.Runtime.InteropServices;

namespace DevComponents.DotNetBar
{
    internal class Office2007RibbonControlPainter : RibbonControlPainter, Rendering.IOffice2007Painter
    {
        private Rendering.Office2007ColorTable m_ColorTable = null; //new Rendering.Office2007ColorTable();

        #region Ribbon Control Background
        /// <summary>
        /// Paints controls background
        /// </summary>
        public override void PaintBackground(RibbonControlRendererEventArgs e)
        {
            Graphics g = e.Graphics;
            RibbonControl rc = e.RibbonControl;
            Rendering.Office2007RibbonColorTable ct = m_ColorTable.RibbonControl;
            Rendering.Office2007RibbonTabItemStateColorTable selectedTabColors = null;

            PaintCaptionBackground(e, rc.DisplayRectangle);
            
            if (rc.Expanded && rc.RibbonStrip.HasVisibleTabs)
            {
                int cornerSize = ct.CornerSize;
                // Draw the border which is base for the tabs
                Rectangle selectedTabRect = Rectangle.Empty;
                if (rc.SelectedRibbonTabItem == null || !rc.Expanded)
                    selectedTabRect = Rectangle.Empty;
                else
                {
                    selectedTabRect = rc.SelectedRibbonTabItem.DisplayRectangle;
                    selectedTabColors = Office2007RibbonTabItemPainter.GetStateColorTable(Office2007RibbonTabItemPainter.GetColorTable(this.ColorTable, rc.SelectedRibbonTabItem), rc.SelectedRibbonTabItem, rc.Expanded);
                }

                Rectangle bottomBounds = new Rectangle(rc.ClientRectangle.X, rc.ClientRectangle.Bottom - cornerSize, rc.ClientRectangle.Width - 1, cornerSize);
                if (!selectedTabRect.IsEmpty)
                    bottomBounds = new Rectangle(rc.ClientRectangle.X, selectedTabRect.Bottom,
                        rc.ClientRectangle.Width - 1, rc.ClientRectangle.Bottom - selectedTabRect.Bottom);

                using (GraphicsPath path = GetBottomLinePath(bottomBounds, cornerSize))
                {
                    using (SolidBrush brush = new SolidBrush(m_ColorTable.RibbonBar.Default.TopBackground.Start))
                        g.FillPath(brush, path);
                }

                // Dark border
                using (GraphicsPath path = GetBottomLinePath(bottomBounds, cornerSize))
                {
                    Region oldRegion = null;
                    if (g.Clip != null) oldRegion = g.Clip.Clone() as Region;

                    if (!selectedTabRect.IsEmpty)
                    {
                        if (selectedTabColors != null)
                        {
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