//
// Copyright 2002 Ximian, Inc.  http://www.ximian.com
// Copyright (C) 2004-2006 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//
// Authors:
//   Jordi Mas i Hernandez (jordi@ximian.com)
// 
// Partially based on work by:
//	
//   Everaldo Canuto (everaldo.canuto@bol.com.br)
//   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//   Dennis Hayes (dennish@raytek.com)
//   

using System.Runtime.InteropServices;

namespace System.Drawing.Imaging
{
	[StructLayout (LayoutKind.Sequential)]
	public sealed class ColorMatrix
	{
		private float color00;
		private float color01;
		private float color02;
		private float color03;
		private float color04;
		private float color10;
		private float color11;
		private float color12;
		private float color13;
		private float color14;
		private float color20;
		private float color21;
		private float color22;
		private float color23;
		private float color24;
		private float color30;
		private float color31;
		private float color32;
		private float color33;
		private float color34;
		private float color40;
		private float color41;
		private float color42;
		private float color43;
		private float color44;

		// constructors
		public ColorMatrix ()
		{
			color01 = color02 = color03 = color04 = 0;
			color10 = color12 = color13 = color14 = 0;
			color20 = color21 = color23 = color24 = 0;
			color30 = color31 = color32 = color34 = 0;
			color40 = color41 = color42 = color43 = 0;
			color00 = color11 = color22 = color33 = color44 = 1;
		}

		[CLSCompliant(false)]
		public ColorMatrix (float[][] matrix)
		{			
			color00 = matrix [0][0];
			color01 = matrix [0][1];
			color02 = matrix [0][2];
			color03 = matrix [0][3];
			color04 = matrix [0][4];
			color10 = matrix [1][0];
			color11 = matrix [1][1];
			color12 = matrix [1][2];
			color13 = matrix [1][3];
			color14 = matrix [1][4];
			color20 = matrix [2][0];
			color21 = matrix [2][1];
			color22 = matrix [2][2];
			color23 = matrix [2][3];
			color24 = matrix [2][4];
			color30 = matrix [3][0];
			color31 = matrix [3][1];
			color32 = matrix [3][2];
			color33 = matrix [3][3];
			color34 = matrix [3][4];
			color40 = matrix [4][0];
			color41 = matrix [4][1];
			color42 = matrix [4][2];
			color43 = matrix [4][3];
			color44 = matrix [4][4];						
		}

		// properties
		public float this[int row, int column] {
			get {  
				switch (row) {
				case 0:	{
					switch (column) {
					case 0: return color00;
					case 1: return color01;
					case 2: return color02;
					case 3: return color03;
					case 4: return color04;
					default: break;
					}
					break;
				}
				case 1:	{
					switch (column) {
					case 0: return color10;
					case 1: return color11;
					case 2: return color12;
					case 3: return color13;
					case 4: return color14;
					default: break;						
					}
					break;
				}
				case 2:	{
					switch (column) {
					case 0: return color20;
					case 1: return color21;
					case 2: return color22;
					case 3: return color23;
					case 4: return color24;
					default: break;						
					}
					break;
				}
				case 3:	{
					switch (column) {
					case 0: return color30;
					case 1: return color31;
					case 2: return color32;
					case 3: return color33;
					case 4: return color34;
					default: break;		
					}
					break;
				}
				case 4:	{
					switch (column) {
					case 0: return color40;
					case 1: return color41;
					case 2: return color42;
					case 3: return color43;
					case 4: return color44;
					default: break;							
					}
					break;
				}
				default:
					break;
				}
			
				throw new IndexOutOfRangeException ("Index was outside the bounds of the array");
			}
			
			set {  
				switch (row) {
				case 0:	{
					switch (column) {
					case 0: color00 = value; return;
					case 1: color01 = value; return;
					case 2: color02 = value; return;
					case 3: color03 = value; return;
					case 4: color04 = value; return;
					default: break;
					}
					break;
				}
				case 1:	{
					switch (column) {
					case 0: color10 = value; return;
					case 1: color11 = value; return;
					case 2: color12 = value; return;
					case 3: color13 = value; return;
					case 4: color14 = value; return;
					default: break;						
					}
					break;
				}
				case 2:	{
					switch (column) {
					case 0: color20 = value; return;
					case 1: color21 = value; return;
					case 2: color22 = value; return;
					case 3: color23 = value; return;
					case 4: color24 = value; return;
					default: break;						
					}
					break;
				}
				case 3:	{
					switch (column) {
					case 0: color30 = value; return;
					case 1: color31 = value; return;
					case 2: color32 = value; return;
					case 3: color33 = value; return;
					case 4: color34 = value; return;
					default: break;		
					}
					break;
				}
				case 4:	{
					switch (column) {
					case 0: color40 = value; return;
					case 1: color41 = value; return;
					case 2: color42 = value; return;
					case 3: color43 = value; return;
					case 4: color44 = value; return;
					default: break;							
					}
					break;
				}
				default:
					break;
				}
			
				throw new IndexOutOfRangeException ("Index was outside the bounds of the array");
			}			
		}


		public float Matrix00 {
			get { return color00; }
			set { color00 = value; }
		}

		public float Matrix01 {
			get { return color01; }
			set { color01 = value; }
		}

		public float Matrix02 {
			get { return color02; }
			set { color02 = value; }
		}

		public float Matrix03 {
			get { return color03; }
			set { color03 = value; }
		}

		public float Matrix04 {
			get { return color04; }
			set { color04 = value; }
		}

		public float Matrix10 {
			get { return color10; }
			set { color10 = value; }
		}

		public float Matrix11 {
			get { return color11; }
			set { color11 = value; }
		}

		public float Matrix12 {
			get { return color12; }
			set { color12 = value; }
		}

		public float Matrix13 {
			get { return color13; }
			set { color13 = value; }
		}

		public float Matrix14 {
			get { return color14; }
			set { color14 = value; }
		}

		public float Matrix20 {
			get { return color20; }
			set { color20 = value; }
		}

		public float Matrix21 {
			get { return color21; }
			set { color21 = value; }
		}

		public float Matrix22 {
			get { return color22; }
			set { color22 = value; }
		}

		public float Matrix23 {
			get { return color23; }
			set { color23 = value; }
		}

		public float Matrix24 {
			get { return color24; }
			set { color24 = value; }
		}

		public float Matrix30 {
			get { return color30; }
			set { color30 = value; }
		}

		public float Matrix31 {
			get { return color31; }
			set { color31 = value; }
		}

		public float Matrix32 {
			get { return color32; }
			set { color32 = value; }
		}

		public float Matrix33 {
			get { return color33; }
			set { color33 = value; }
		}

		public float Matrix34 {
			get { return color34; }
			set { color34 = value; }
		}

		public float Matrix40 {
			get { return color40; }
			set { color40 = value; }
		}

		public float Matrix41 {
			get { return color41; }
			set { color41 = value; }
		}

		public float Matrix42 {
			get { return color42; }
			set { color42 = value; }
		}

		public float Matrix43 {
			get { return color43; }
			set { color43 = value; }
		}

		public float Matrix44 {
			get { return color44; }
			set { color44 = value; }
		}


		static internal IntPtr Alloc (ColorMatrix cm)
		{
			if (cm == null)
				return IntPtr.Zero;

			IntPtr result = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (ColorMatrix)));
			Marshal.StructureToPtr (cm, result, false);
			return result;
		}

		static internal void Free (IntPtr cm)
		{
			if (cm != IntPtr.Zero)
				Marshal.FreeHGlobal (cm);
		}
	}
}