/Graphics/OpenTK/WindowInfoHelper.cs

using System;

using System.Reflection;

using System.Runtime.InteropServices;

using OpenTK.Graphics;

using OpenTK.Platform;

using OpenTK.Platform.X11;

using OpenTKUtilities = OpenTK.Platform.Utilities;



namespace Delta.Graphics.OpenTK

{

	/// <summary>

	/// Window info helper

	/// </summary>

	public class WindowInfoHelper

	{

		#region XVisualInfo Struct

		/// <summary>

		/// XVisual info

		/// </summary>

		[StructLayout(LayoutKind.Sequential)]

		internal struct XVisualInfo

		{

			#region Visual (Public)

			/// <summary>

			/// Visual

			/// </summary>

			public IntPtr Visual;

			#endregion



			#region VisualID (Public)

			/// <summary>

			/// Visual ID

			/// </summary>

			public IntPtr VisualID;

			#endregion



			#region Screen (Public)

			/// <summary>

			/// Screen

			/// </summary>

			public int Screen;

			#endregion



			#region Depth (Public)

			/// <summary>

			/// Depth

			/// </summary>

			public int Depth;

			#endregion



			#region Class (Public)

			/// <summary>

			/// Class

			/// </summary>

			public XVisualClass Class;

			#endregion



			#region RedMask (Public)

			/// <summary>

			/// Red mask

			/// </summary>

			public long RedMask;

			#endregion



			#region GreenMask (Public)

			/// <summary>

			/// Green mask

			/// </summary>

			public long GreenMask;

			#endregion



			#region blueMask (Public)

			/// <summary>

			/// Blue mask

			/// </summary>

			public long blueMask;

			#endregion



			#region ColormapSize (Public)

			/// <summary>

			/// Colormap size

			/// </summary>

			public int ColormapSize;

			#endregion



			#region BitsPerRgb (Public)

			/// <summary>

			/// Bits per RGB

			/// </summary>

			public int BitsPerRgb;

			#endregion



			#region ToString (Public)

			/// <summary>

			/// To string

			/// </summary>

			public override string ToString()

			{

				return "id (" + VisualID + "), " + "screen (" + Screen + "), " +

				       "depth (" + Depth + "), " + "class (" + Class + ")";

			}

			#endregion

		}

		#endregion



		#region Create (Static)

		/// <summary>

		/// Create

		/// </summary>

		/// <param name="windowHandle">The window handle.</param>

		/// <returns></returns>

		public static IWindowInfo Create(IntPtr windowHandle)

		{

			return OpenTKUtilities.CreateWindowsWindowInfo(windowHandle);

		}

		#endregion



		#region CreateX11 (Static)

		/// <summary>

		/// Create X11

		/// </summary>

		/// <param name="mode">The mode.</param>

		/// <param name="windowHandle">The window handle.</param>

		/// <returns></returns>

		public static IWindowInfo CreateX11(GraphicsMode mode, IntPtr windowHandle)

		{

			Type type = Type.GetType("System.Windows.Forms.XplatUIX11, " +

			                         "System.Windows.Forms");

			if (type == null)

			{

				throw new PlatformNotSupportedException(

					"System.Windows.Forms.XplatUIX11 is missing. " +

					"Unsupported platform or Mono runtime version, aborting.");

			}



			return null;

		}

		#endregion



		#region Methods (Private)



		#region XOpenDisplay

		/// <summary>

		/// XOpenDisplay

		/// </summary>

		/// <param name="display"></param>

		/// <returns></returns>

		[DllImport("libX11", EntryPoint = "XOpenDisplay")]

		private static extern IntPtr XOpenDisplay(IntPtr display);

		#endregion



		#region XLockDisplay

		/// <summary>

		/// XLockDisplay

		/// </summary>

		/// <param name="display"></param>

		[DllImport("libX11")]

		private static extern void XLockDisplay(IntPtr display);

		#endregion



		#region XUnlockDisplay

		/// <summary>

		/// XUnlockDisplay

		/// </summary>

		/// <param name="display"></param>

		[DllImport("libX11")]

		private static extern void XUnlockDisplay(IntPtr display);

		#endregion



		#region XDefaultScreen

		/// <summary>

		/// XDefaultScreen

		/// </summary>

		/// <param name="display"></param>

		/// <returns></returns>

		[DllImport("libX11")]

		private static extern int XDefaultScreen(IntPtr display);

		#endregion



		#region XRootWindow

		/// <summary>

		/// XRoot window

		/// </summary>

		/// <param name="display"></param>

		/// <param name="screen_number"></param>

		/// <returns></returns>

		[DllImport("libX11")]

		private static extern IntPtr XRootWindow(IntPtr display,

			int screen_number);

		#endregion



		#region XGetVisualInfo

		/// <summary>

		/// XGet visual info

		/// </summary>

		/// <param name="display"></param>

		/// <param name="vinfoMask"></param>

		/// <param name="template"></param>

		/// <param name="nitems"></param>

		/// <returns></returns>

		[DllImport("libX11", EntryPoint = "XGetVisualInfo")]

		private static extern IntPtr XGetVisualInfo(IntPtr display,

			IntPtr vinfoMask, ref XVisualInfo template, out int nitems);

		#endregion



		#region XCreateColormap

		/// <summary>

		/// XCreate colormap

		/// </summary>

		/// <param name="display"></param>

		/// <param name="window"></param>

		/// <param name="visual"></param>

		/// <param name="alloc"></param>

		/// <returns></returns>

		[DllImport("libX11")]

		private static extern IntPtr XCreateColormap(IntPtr display, IntPtr window,

			IntPtr visual, int alloc);

		#endregion



		#region GetStaticFieldValue

		/// <summary>

		/// Get static field value

		/// </summary>

		private static object GetStaticFieldValue(Type type, string fieldName)

		{

			return type.GetField(fieldName, BindingFlags.NonPublic |

			                                BindingFlags.Static).GetValue(null);

		}

		#endregion



		#region SetStaticFieldValue

		/// <summary>

		/// Set static field value

		/// </summary>

		private static void SetStaticFieldValue(Type type, string fieldName,

			object value)

		{

			type.GetField(fieldName, BindingFlags.NonPublic |

			                         BindingFlags.Static).SetValue(null, value);

		}

		#endregion



		#endregion

	}

}