Developing Next Generation Smart Clients using .NET 2.0 working with Existing .NET 1.1 SOA-based XML Web Services

#region Using directives

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
using System.ComponentModel;

#endregion

namespace SmartInstitute.Client.Controls
{
	public class SectionHeader : Panel
	{
		// const values
		private class Consts
		{
			public static Color ColorLow = Color.FromArgb(175, 200, 245);
			public static Color ColorHigh = Color.FromArgb(205, 225, 250);
			public static Pen PenTop = new Pen(Color.FromArgb(180, 210, 245));
			public static Pen PenBottom = new Pen(SystemColors.InactiveCaption);
			public const int PosOffset = 4;
		}

		// internal members
		private LinearGradientBrush m_brush;
		private string m_text = string.Empty;

		[DefaultValueAttribute("")]
		[CategoryAttribute("Appearance")]
		[DescriptionAttribute("Header text.")]
		public string HeaderText
		{
			get
			{
				return m_text;
			}

			set
			{
				m_text = value;
				Invalidate();
			}
		}

		public SectionHeader()
		{
			SetStyle(ControlStyles.UserPaint | ControlStyles.ResizeRedraw | ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer, true);

		}

		// the caption needs to be drawn
		protected override void OnPaint(PaintEventArgs e)
		{
			Draw(e.Graphics);
			base.OnPaint(e);
		}

		// draw the caption
		private void Draw(Graphics g)
		{
			if (Width != 0 && Height != 0)
			{
				if( null == m_brush )
					this.CreateFillBrush();

				// background
				g.FillRectangle(m_brush, DisplayRectangle);
				
				// header text
				g.DrawString(m_text, Font, SystemBrushes.ControlText, Consts.PosOffset, ((Height - Font.Height) / 2));
				
				// top and bottom lines
				g.DrawLine(Consts.PenTop, 0, 0, Width - 1, 0);
				g.DrawLine(Consts.PenBottom, 0, Height - 1, Width - 1, Height - 1);
			}
		}

		protected override void OnSizeChanged(EventArgs e)
		{
			base.OnSizeChanged(e);

			this.CreateFillBrush();
		}
		private void CreateFillBrush()
		{
			if (Width > 0 && Height > 0)
			{
				// create the gradient brush when the control is resized
				m_brush = new LinearGradientBrush(DisplayRectangle, Consts.ColorHigh, Consts.ColorLow, LinearGradientMode.Vertical);
			}
		}

	}
}