blackwhitemenustrip.cs

章立民－visual stadio 2005 c＃编程技巧

using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Windows.Forms;
using System.Drawing;


namespace CH9
{
    public partial class BlackWhiteMenuStrip : MenuStrip
    {        
        private class BlackWhiteMenuStripRenderer : ToolStripProfessionalRenderer
        {
            public BlackWhiteMenuStripRenderer()
                : base(new BlackWhiteMenuStripColorTable())
            {

            }

            public new BlackWhiteMenuStripColorTable ColorTable
            {
                get
                {
                    return (BlackWhiteMenuStripColorTable)base.ColorTable;
                }
            }

            protected override void OnRenderToolStripBackground(ToolStripRenderEventArgs e)
            {
                e.Graphics.Clear(ColorTable.MyBackgroundColor);
            }

            protected override void OnRenderMenuItemBackground(ToolStripItemRenderEventArgs e)
            {
                if ((e.Item.Selected || e.Item.Pressed))
                {
                    using (Brush b = new SolidBrush(ColorTable.MySelectedMenuItemBackgroundColor))
                    {
                        Rectangle itemBounds = new Rectangle(Point.Empty, e.Item.Size);
                        e.Graphics.FillRectangle(b, itemBounds);
                    }
                }
                else
                {
                    base.OnRenderMenuItemBackground(e);
                }
            }

            protected override void OnRenderItemText(ToolStripItemTextRenderEventArgs e)
            {
                if (e.Item.Selected)
                {
                    e.TextColor = Color.Gold;
                }
                else
                {
                    e.Item.ForeColor = Color.White;
                }

                base.OnRenderItemText(e);
            }

            protected override void OnRenderImageMargin(ToolStripRenderEventArgs e)
            {
            }

            protected override void OnRenderToolStripBorder(ToolStripRenderEventArgs e)
            {
                using(Brush b = new SolidBrush(ColorTable.MyBackgroundColor))
                {
                    e.Graphics.FillRectangle(b, e.ConnectedArea);
                }
            }
        }

        private class BlackWhiteMenuStripColorTable : ProfessionalColorTable
        {
            public override Color SeparatorDark
            {
                get
                {
                    return Color.FromArgb(60, 60, 60);
                }
            }

            public override Color SeparatorLight
            {
                get
                {
                    return Color.FromArgb(140, 140, 140);
                }
            }

            public Color MyBackgroundColor
            {
                get
                {
                    return Color.FromArgb(110, 110, 110);
                }
            }

            public Color MySelectedMenuItemBackgroundColor
            {
                get
                {
                    return Color.FromArgb(80, 80, 80);
                }
            }
        }
    }
}