remove duplicated SDL input handling

OpenRA.Renderer.SdlCommon/SdlInput.cs

@@ -0,0 +1,164 @@
+#region Copyright & License Information
+/*
+* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
+* This file is part of OpenRA, which is free software. It is made 
+* available to you under the terms of the GNU General Public License
+* as published by the Free Software Foundation. For more information,
+* see COPYING.
+*/
+#endregion
+
+using System;
+using System.Drawing;
+using System.IO;
+using Tao.OpenGl;
+using Tao.Sdl;
+
+namespace OpenRA.Renderer.SdlCommon
+{
+	public class SdlInput
+	{
+		MouseButton lastButtonBits = (MouseButton)0;
+		IntPtr surface;
+		
+		public SdlInput( IntPtr surface ) { this.surface = surface; }
+
+		MouseButton MakeButton( byte b )
+		{
+			return b == Sdl.SDL_BUTTON_LEFT ? MouseButton.Left
+				: b == Sdl.SDL_BUTTON_RIGHT ? MouseButton.Right
+				: b == Sdl.SDL_BUTTON_MIDDLE ? MouseButton.Middle
+				: b == Sdl.SDL_BUTTON_WHEELDOWN ? MouseButton.WheelDown
+				: b == Sdl.SDL_BUTTON_WHEELUP ? MouseButton.WheelUp
+				: 0;
+		}
+
+		Modifiers MakeModifiers( int raw )
+		{
+			return ( ( raw & Sdl.KMOD_ALT ) != 0 ? Modifiers.Alt : 0 )
+				 | ( ( raw & Sdl.KMOD_CTRL ) != 0 ? Modifiers.Ctrl : 0 )
+				 | ( ( raw & Sdl.KMOD_META ) != 0 ? Modifiers.Meta : 0 )
+				 | ( ( raw & Sdl.KMOD_SHIFT ) != 0 ? Modifiers.Shift : 0 );
+		}
+		
+		public void PumpInput( IInputHandler inputHandler )
+		{
+			Game.HasInputFocus = 0 != ( Sdl.SDL_GetAppState() & Sdl.SDL_APPINPUTFOCUS );
+
+			var mods = MakeModifiers( Sdl.SDL_GetModState() );
+			inputHandler.ModifierKeys( mods );
+			MouseInput? pendingMotion = null;
+
+			Sdl.SDL_Event e;
+			while( Sdl.SDL_PollEvent( out e ) != 0 )
+			{
+				switch( e.type )
+				{
+				case Sdl.SDL_QUIT:
+					OpenRA.Game.Exit();
+					break;
+
+				case Sdl.SDL_MOUSEBUTTONDOWN:
+					{
+						if( pendingMotion != null )
+						{
+							inputHandler.OnMouseInput( pendingMotion.Value );
+							pendingMotion = null;
+						}
+
+						var button = MakeButton( e.button.button );
+						lastButtonBits |= button;
+
+						inputHandler.OnMouseInput( new MouseInput(
+							MouseInputEvent.Down, button, new int2( e.button.x, e.button.y ), mods ) );
+					} break;
+
+				case Sdl.SDL_MOUSEBUTTONUP:
+					{
+						if( pendingMotion != null )
+						{
+							inputHandler.OnMouseInput( pendingMotion.Value );
+							pendingMotion = null;
+						}
+
+						var button = MakeButton( e.button.button );
+						lastButtonBits &= ~button;
+
+						inputHandler.OnMouseInput( new MouseInput(
+							MouseInputEvent.Up, button, new int2( e.button.x, e.button.y ), mods ) );
+					} break;
+
+				case Sdl.SDL_MOUSEMOTION:
+					{
+						pendingMotion = new MouseInput(
+							MouseInputEvent.Move,
+							lastButtonBits,
+							new int2( e.motion.x, e.motion.y ),
+							mods );
+					} break;
+
+				case Sdl.SDL_KEYDOWN:
+					{
+						var keyEvent = new KeyInput
+						{
+							Event = KeyInputEvent.Down,
+							Modifiers = mods,
+							UnicodeChar = (char)e.key.keysym.unicode,
+							KeyName = Sdl.SDL_GetKeyName( e.key.keysym.sym ),
+							VirtKey = e.key.keysym.sym
+						};
+
+						if( !HandleSpecialKey( keyEvent ) )
+							inputHandler.OnKeyInput( keyEvent );
+					} break;
+
+				case Sdl.SDL_KEYUP:
+					{
+						var keyEvent = new KeyInput
+						{
+							Event = KeyInputEvent.Up,
+							Modifiers = mods,
+							UnicodeChar = (char)e.key.keysym.unicode,
+							KeyName = Sdl.SDL_GetKeyName( e.key.keysym.sym ),
+							VirtKey = e.key.keysym.sym
+						};
+
+						inputHandler.OnKeyInput( keyEvent );
+					} break;
+				}
+			}
+
+			if( pendingMotion != null )
+			{
+				inputHandler.OnMouseInput( pendingMotion.Value );
+				pendingMotion = null;
+			}
+
+			ErrorHandler.CheckGlError();
+		}
+
+		bool HandleSpecialKey( KeyInput k )
+		{
+			switch( k.VirtKey )
+			{
+			case Sdl.SDLK_F13:
+				var path = Environment.GetFolderPath( Environment.SpecialFolder.Personal )
+					+ Path.DirectorySeparatorChar + DateTime.UtcNow.ToString( "OpenRA-yyyy-MM-ddThhmmssZ" ) + ".bmp";
+				Sdl.SDL_SaveBMP( surface, path );
+				return true;
+
+			case Sdl.SDLK_F4:
+				if( k.Modifiers.HasModifier( Modifiers.Alt ) )
+				{
+					OpenRA.Game.Exit();
+					return true;
+				}
+				return false;
+
+			default:
+				return false;
+			}
+		}
+	}
+}
+