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path: root/src/Screen.cs
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// Copyright 2006 Alp Toker <alp@atoker.com>
// This software is made available under the MIT License
// See COPYING for details

using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace Compiz
{
	public class Screen
	{
		//protected IntPtr Handle;
		public IntPtr Handle;

		public Screen (IntPtr handle)
		{
			this.Handle = handle;
		}

		public Display Display
		{
			get {
				unsafe {
					//CompScreen *w = (CompScreen*)Handle;
					//Console.Error.WriteLine (w->Display);
				}
				return null;
			}
		}

		public void Configure ()
		{
		}

		/*
			 public void Damage (Region region)
			 {
			 }
			 */

		[DllImport("compiz")]
			protected extern static void damageScreen (IntPtr screen);

		public void Damage ()
		{
			damageScreen (Handle);
		}

		[DllImport("compiz")]
			protected extern static void damagePendingOnScreen (IntPtr s);

		public void DamagePending ()
		{
			damagePendingOnScreen (Handle);
		}

		[DllImport("compiz")]
			protected extern static void insertWindowIntoScreen (IntPtr s, IntPtr w, uint aboveId);

		public void InsertWindow (Window w, uint aboveId)
		{
			insertWindowIntoScreen (Handle, w.Handle, aboveId);
		}

		[DllImport("compiz")]
			protected extern static void unhookWindowFromScreen (IntPtr s, IntPtr w);

		public void UnhookWindow (Window w)
		{
			unhookWindowFromScreen (Handle, w.Handle);
		}


		[DllImport("compiz")]
			protected extern static int pushScreenGrab (IntPtr s, uint cursor, string name);

		public int PushGrab (uint cursor, string name)
		{
			return pushScreenGrab (Handle, cursor, name);
		}

		[DllImport("compiz")]
			protected extern static void removeScreenGrab (IntPtr s, int index, IntPtr restorePointer);

		public void RemoveGrab (int index, IntPtr restorePointer)
		{
			removeScreenGrab (Handle, index, restorePointer);
		}

		public void RemoveGrab (int index)
		{
			removeScreenGrab (Handle, index, IntPtr.Zero);
		}


		[DllImport("compiz")]
			protected extern static bool otherScreenGrabExist (IntPtr s, IntPtr args);

		public bool OtherGrabsExist ()
		{
			return otherScreenGrabExist (Handle, IntPtr.Zero);
		}


		[DllImport("compiz")]
			protected extern static void enableScreenEdge (IntPtr s, ScreenEdge edge);

		public void EnableEdge (ScreenEdge edge)
		{
			enableScreenEdge (Handle, edge);
		}

		[DllImport("compiz")]
			protected extern static void disableScreenEdge (IntPtr s, ScreenEdge edge);

		public void DisableEdge (ScreenEdge edge)
		{
			disableScreenEdge (Handle, edge);
		}



		public void RunCommand (string command)
		{
		}

		[DllImport("compiz")]
			protected extern static void moveScreenViewport (IntPtr s, int tx, bool sync);

		public void MoveViewport (int tx, bool sync)
		{
			moveScreenViewport (Handle, tx, sync);
		}






		public void FocusDefaultWindow ()
		{
		}

		public Screen ScreenAtDisplay ()
		{
			return null;
		}

		public void WarpPointer (int dx, int dy)
		{
		}

		public bool Lighting
		{
			get {
				return true;
			}
		}

		List<Delegate> delegates = new List<Delegate> ();

		public event PreparePaintScreenHandlerNew PreparePaint
		{
			add {
				Console.Error.WriteLine ("PreparePaintScreen_Add " + Handle + " (managed)");
				unsafe {
					CompScreen* screen = (CompScreen*)Handle;

					IntPtr base_fptr = screen->PreparePaintScreen;

					PreparePaintScreenHandler base_func = (PreparePaintScreenHandler) Marshal.GetDelegateForFunctionPointer (base_fptr, typeof (PreparePaintScreenHandler));
					PreparePaintScreenHandler meta_func = delegate (IntPtr s, int msSinceLastPaint) {
						unsafe {
							CompScreen* screen = (CompScreen*)s;

							//UNWRAP
							IntPtr tmp = screen->PreparePaintScreen;
							screen->PreparePaintScreen = base_fptr;

							base_func (s, msSinceLastPaint);

							//WRAP
							base_fptr = screen->PreparePaintScreen;
							screen->PreparePaintScreen = tmp;
						}
					};
					PreparePaintScreenHandler wrap_func = delegate (IntPtr s, int msSinceLastPaint) {value (meta_func, s, msSinceLastPaint);};

					//keep references around, cheap hack for now
					delegates.Add (wrap_func);

					IntPtr fptr = Marshal.GetFunctionPointerForDelegate (wrap_func);
					screen->PreparePaintScreen = fptr;
				}
			}
			remove {
				Console.Error.WriteLine ("PreparePaintScreen_Remove (managed)");
			}
		}

		public event PaintScreenHandlerNew Paint
		{
			add {
				Console.Error.WriteLine ("PaintScreen_Add " + Handle + " (managed)");
				unsafe {
					CompScreen* screen = (CompScreen*)Handle;

					IntPtr base_fptr = screen->PaintScreen;

					PaintScreenHandler base_func = (PaintScreenHandler) Marshal.GetDelegateForFunctionPointer (base_fptr, typeof (PaintScreenHandler));

					PaintScreenHandler meta_func = delegate (IntPtr s, ref ScreenPaintAttrib sa, IntPtr region, ScreenPaint mask) {
						unsafe {
							CompScreen* screen = (CompScreen*)s;

							//UNWRAP
							IntPtr tmp = screen->PaintScreen;
							screen->PaintScreen = base_fptr;

							bool ret = base_func (s, ref sa, region, mask);

							//WRAP
							base_fptr = screen->PaintScreen;
							screen->PaintScreen = tmp;

							return ret;
						}
					};
					PaintScreenHandler wrap_func = delegate (IntPtr s, ref ScreenPaintAttrib sa, IntPtr region, ScreenPaint mask) {
						return value (meta_func, s, ref sa, region, mask);
					};

					//keep references around, cheap hack for now
					delegates.Add (wrap_func);

					IntPtr fptr = Marshal.GetFunctionPointerForDelegate (wrap_func);
					screen->PaintScreen = fptr;
				}
			}
			remove {
				Console.Error.WriteLine ("PaintScreen_Remove (managed)");
			}
		}


		public event DonePaintScreenHandlerNew DonePaint
		{
			add {
				Console.Error.WriteLine ("DonePaintScreen_Add " + Handle + " (managed)");
				unsafe {
					CompScreen* screen = (CompScreen*)Handle;

					IntPtr base_fptr = screen->DonePaintScreen;

					DonePaintScreenHandler base_func = (DonePaintScreenHandler) Marshal.GetDelegateForFunctionPointer (base_fptr, typeof (DonePaintScreenHandler));
					DonePaintScreenHandler meta_func = delegate (IntPtr s) {
						unsafe {
							CompScreen* screen = (CompScreen*)s;

							//UNWRAP
							IntPtr tmp = screen->DonePaintScreen;
							screen->DonePaintScreen = base_fptr;

							base_func (s);

							//WRAP
							base_fptr = screen->DonePaintScreen;
							screen->DonePaintScreen = tmp;
						}
					};
					DonePaintScreenHandler wrap_func = delegate (IntPtr s) {value (meta_func, s);};

					//keep references around, cheap hack for now
					delegates.Add (wrap_func);

					IntPtr fptr = Marshal.GetFunctionPointerForDelegate (wrap_func);
					screen->DonePaintScreen = fptr;
				}
			}
			remove {
				Console.Error.WriteLine ("DonePaintScreen_Remove (managed)");
			}
		}


		public PaintScreenHandler PaintScreenOrig;
		//public PaintScreenHandler PaintScreenNew;

		/*
		[DllImport ("compmono")]
			public extern static PaintScreenHandler PaintScreen_Add (IntPtr s, PaintScreenHandler func);

		public event PaintScreenHandler Paint
		{
			add {
				//PaintScreenNew = value;
				Console.Error.WriteLine ("PaintScreen_Add " + Handle + " (managed)");
				//PaintScreenOrig = PaintScreen_Add (Handle, value);
			}
			remove {
				Console.Error.WriteLine ("PaintScreen_Remove (managed)");
			}
		}
		*/

		[DllImport ("compmono")]
			public extern static DonePaintScreenHandler DonePaintScreen_Add (IntPtr s, DonePaintScreenHandler func);
	}

	public delegate void PreparePaintScreenHandlerNew (PreparePaintScreenHandler inner, IntPtr s, int msSinceLastPaint);

	public delegate void PreparePaintScreenHandler (IntPtr s, int msSinceLastPaint);

	public delegate bool PaintScreenHandlerNew (PaintScreenHandler inner, IntPtr s, ref ScreenPaintAttrib sa, IntPtr region, ScreenPaint mask);

	public delegate bool PaintScreenHandler (IntPtr s, ref ScreenPaintAttrib sa, IntPtr region, ScreenPaint mask);

	public delegate void DonePaintScreenHandlerNew (DonePaintScreenHandler inner, IntPtr s);
	public delegate void DonePaintScreenHandler (IntPtr s);


	public enum ScreenOption
	{
		DetectRefreshRate,
			Lighting,
			RefreshRate,
			Size,
			OpacityStep,
			UnredirectFs,
			DefaultIcon,
	}

	public enum ScreenEdge
	{
		Left,
			Right,
			Top,
			Bottom,
			TopLeft,
			TopRight,
			BottomLeft,
			BottomRight,
	}

	[Flags]
		public enum ScreenDamage : uint
		{
			Pending = 1 << 0,
							Region = 1 << 1,
							All = 1 << 2,
		}

	[Flags]
		public enum ScreenPaint : uint
		{
			Region = 1 << 0,
						 Full = 1 << 1,
						 Transformed = 1 << 2,
						 WithTransformedWindows = 1 << 3,
						 Clear = 1 << 4,
		}

	[StructLayout (LayoutKind.Sequential, Pack=1)]
	public struct ScreenPaintAttrib {
		public float xRotate;
		public float yRotate;
		public float vRotate;
		public float xTranslate;
		public float yTranslate;
		public float zTranslate;
		public float zCamera;
	}

	public delegate void PaintBackgroundHandler (IntPtr screen, IntPtr region, BackgroundPaint mask);

	[Flags]
		public enum BackgroundPaint : uint
		{
			OnTransformedScreen = 1 << 0,
				WithStencil = 1 << 1,
		}

	[StructLayout (LayoutKind.Sequential, Pack=1)]
	public unsafe struct CompScreen
	{
		public CompScreen* Next;
		public CompDisplay* Display;
		public CompWindow* Windows;
		public CompWindow* ReverseWindows;

		//not so great
		public fixed byte data[1636];

		public IntPtr PreparePaintScreen;
		public IntPtr DonePaintScreen;
		public IntPtr PaintScreen;
		public IntPtr PaintTransformedScreen;
		public IntPtr PaintBackground;
		public IntPtr PaintWindow;
		public IntPtr AddWindowGeometry;
		public IntPtr DrawWindowGeometry;
		public IntPtr DrawWindowTexture;
		public IntPtr DamageWindowRect;
		public IntPtr FocusWindow;
		public IntPtr SetWindowScale;

		public IntPtr WindowResizeNotify;
		public IntPtr WindowMoveNotify;
		public IntPtr WindowGrabNotify;
		public IntPtr WindowUngrabNotify;

		public IntPtr privates;
	}
}