c:\Tools\SD3\src\Libraries\ICSharpCode.TextEditor\Project\Src\Gui\HRuler.cs

// <file>

//     <copyright see="prj:///doc/copyright.txt"/>

//     <license see="prj:///doc/license.txt"/>

//     <owner name="Mike Krüger" email="mike@icsharpcode.net"/>

//     <version>$Revision: 1925 $</version>

// </file>

using System;

using System.Drawing;

using System.Windows.Forms;

namespace ICSharpCode.TextEditor

{

	/// <summary>

	/// Horizontal ruler - text column measuring ruler at the top of the text area.

	/// </summary>

	public class HRuler : Control

	{

		TextArea textArea;

		public HRuler(TextArea textArea)

		{

			this.textArea = textArea;

		}

		protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)

		{

			Graphics g = e.Graphics;

			int num = 0;

			for (float x = textArea.TextView.DrawingPosition.Left; x < textArea.TextView.DrawingPosition.Right; x += textArea.TextView.WideSpaceWidth) {

				int offset = (Height * 2) / 3;

				if (num % 5 == 0) {

					offset = (Height * 4) / 5;

				}

				if (num % 10 == 0) {

					offset = 1;

				}

				++num;

				g.DrawLine(Pens.Black,

				           (int)x, offset, (int)x, Height - offset);

			}

		}

		protected override void OnPaintBackground(System.Windows.Forms.PaintEventArgs e)

		{

			e.Graphics.FillRectangle(Brushes.White,

			                         new Rectangle(0,

			                                       0,

			                                       Width,

			                                       Height));

		}

	}

}