/*
 * Util.ColorFinder.cs
 * Authors: Adam Nabinger
 * Copyright (c) 2007-2008 Cornell University

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

namespace Util
{
	/// <summary>
	/// A static class to facilitate finding the proper names of colors.
	/// </summary>
	public static class ColorFinder
	{
        /// <summary>
        /// Get the name of the specified Color.
        /// </summary>
        /// <param name="color">A Color.</param>
        /// <returns>The Name of the Color, or 'Unknown Color'.</returns>
		public static string GetString(Microsoft.Xna.Framework.Graphics.Color color)
		{
			return GetString(color.A, color.R, color.G, color.B);
		}

        /// <summary>
        /// Get the name of the specified Color.
        /// </summary>
        /// <param name="color">A Color.</param>
        /// <returns>The Name of the Color, or 'Unknown Color'.</returns>
		public static string GetString(System.Drawing.Color color)
		{
			return GetString(color.A, color.R, color.G, color.B);
		}

        /// <summary>
        /// Search through the list of Known Colors in System.Drawing to see if any match the given parameters. If so, retrun the name of that color.
        /// </summary>
        /// <param name="A">The value of the alpha parameter</param>
        /// <param name="R">The value of the red parameter</param>
        /// <param name="G">The value of the green parameter</param>
        /// <param name="B">The value of the blue parameter</param>
        /// <returns>The name of the color of the given RGBA values</returns>
		private static string GetString(int A, int R, int G, int B)
		{
			string[] names = System.Enum.GetNames(typeof(System.Drawing.KnownColor));
			foreach (string name in names)
			{
				System.Drawing.KnownColor knownColor = (System.Drawing.KnownColor)System.Enum.Parse(typeof(System.Drawing.KnownColor), name);
				if (knownColor < System.Drawing.KnownColor.Transparent || knownColor > System.Drawing.KnownColor.YellowGreen)
				{
					continue;
				}
				System.Drawing.Color test = System.Drawing.Color.FromKnownColor(knownColor);
				if (test.A == A && test.R == R && test.G == G && test.B == B)
				{
					return test.Name;
				}
			}
			return "Unknown Color";
		}
	}
}