untie the engine from SDL2 and MiniTK

2015-06-28 18:54:54 +02:00
parent f325463204
commit 17f3466451
27 changed files with 196 additions and 146 deletions
--- a/OpenRA.Platforms.Default/Sdl2Input.cs
+++ b/OpenRA.Platforms.Default/Sdl2Input.cs
@@ -0,0 +1,180 @@
+#region Copyright & License Information
+/*
+* Copyright 2007-2015 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.Runtime.InteropServices;
+using System.Text;
+using SDL2;
+
+namespace OpenRA.Platforms.Default
+{
+	public class Sdl2Input
+	{
+		MouseButton lastButtonBits = (MouseButton)0;
+
+		public string GetClipboardText() { return SDL.SDL_GetClipboardText(); }
+
+		static 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
+				: 0;
+		}
+
+		static Modifiers MakeModifiers(int raw)
+		{
+			return ((raw & (int)SDL.SDL_Keymod.KMOD_ALT) != 0 ? Modifiers.Alt : 0)
+				 | ((raw & (int)SDL.SDL_Keymod.KMOD_CTRL) != 0 ? Modifiers.Ctrl : 0)
+				 | ((raw & (int)SDL.SDL_Keymod.KMOD_LGUI) != 0 ? Modifiers.Meta : 0)
+				 | ((raw & (int)SDL.SDL_Keymod.KMOD_RGUI) != 0 ? Modifiers.Meta : 0)
+				 | ((raw & (int)SDL.SDL_Keymod.KMOD_SHIFT) != 0 ? Modifiers.Shift : 0);
+		}
+
+		public void PumpInput(IInputHandler inputHandler)
+		{
+			var mods = MakeModifiers((int)SDL.SDL_GetModState());
+			var scrollDelta = 0;
+			inputHandler.ModifierKeys(mods);
+			MouseInput? pendingMotion = null;
+
+			SDL.SDL_Event e;
+			while (SDL.SDL_PollEvent(out e) != 0)
+			{
+				switch (e.type)
+				{
+					case SDL.SDL_EventType.SDL_QUIT:
+						Game.Exit();
+						break;
+
+					case SDL.SDL_EventType.SDL_WINDOWEVENT:
+						{
+							switch (e.window.windowEvent)
+							{
+								case SDL.SDL_WindowEventID.SDL_WINDOWEVENT_FOCUS_LOST:
+									Game.HasInputFocus = false;
+									break;
+
+								case SDL.SDL_WindowEventID.SDL_WINDOWEVENT_FOCUS_GAINED:
+									Game.HasInputFocus = true;
+									break;
+							}
+
+							break;
+						}
+
+					case SDL.SDL_EventType.SDL_MOUSEBUTTONDOWN:
+						{
+							if (pendingMotion != null)
+							{
+								inputHandler.OnMouseInput(pendingMotion.Value);
+								pendingMotion = null;
+							}
+
+							var button = MakeButton(e.button.button);
+							lastButtonBits |= button;
+
+							var pos = new int2(e.button.x, e.button.y);
+
+							inputHandler.OnMouseInput(new MouseInput(
+								MouseInputEvent.Down, button, scrollDelta, pos, mods,
+								MultiTapDetection.DetectFromMouse(e.button.button, pos)));
+
+							break;
+						}
+
+					case SDL.SDL_EventType.SDL_MOUSEBUTTONUP:
+						{
+							if (pendingMotion != null)
+							{
+								inputHandler.OnMouseInput(pendingMotion.Value);
+								pendingMotion = null;
+							}
+
+							var button = MakeButton(e.button.button);
+							lastButtonBits &= ~button;
+
+							var pos = new int2(e.button.x, e.button.y);
+							inputHandler.OnMouseInput(new MouseInput(
+								MouseInputEvent.Up, button, scrollDelta, pos, mods,
+								MultiTapDetection.InfoFromMouse(e.button.button)));
+
+							break;
+						}
+
+					case SDL.SDL_EventType.SDL_MOUSEMOTION:
+						{
+							pendingMotion = new MouseInput(
+								MouseInputEvent.Move, lastButtonBits, scrollDelta,
+								new int2(e.motion.x, e.motion.y), mods, 0);
+
+							break;
+						}
+
+					case SDL.SDL_EventType.SDL_MOUSEWHEEL:
+						{
+							int x, y;
+							SDL.SDL_GetMouseState(out x, out y);
+							scrollDelta = e.wheel.y;
+							inputHandler.OnMouseInput(new MouseInput(MouseInputEvent.Scroll, MouseButton.None, scrollDelta, new int2(x, y), Modifiers.None, 0));
+
+							break;
+						}
+
+					case SDL.SDL_EventType.SDL_TEXTINPUT:
+						{
+							var rawBytes = new byte[SDL.SDL_TEXTINPUTEVENT_TEXT_SIZE];
+							unsafe { Marshal.Copy((IntPtr)e.text.text, rawBytes, 0, SDL.SDL_TEXTINPUTEVENT_TEXT_SIZE); }
+							inputHandler.OnTextInput(Encoding.UTF8.GetString(rawBytes, 0, Array.IndexOf(rawBytes, (byte)0)));
+							break;
+						}
+
+					case SDL.SDL_EventType.SDL_KEYDOWN:
+					case SDL.SDL_EventType.SDL_KEYUP:
+						{
+							var keyCode = (Keycode)e.key.keysym.sym;
+							var type = e.type == SDL.SDL_EventType.SDL_KEYDOWN ?
+								KeyInputEvent.Down : KeyInputEvent.Up;
+
+							var tapCount = e.type == SDL.SDL_EventType.SDL_KEYDOWN ?
+								MultiTapDetection.DetectFromKeyboard(keyCode) :
+								MultiTapDetection.InfoFromKeyboard(keyCode);
+
+							var keyEvent = new KeyInput
+							{
+								Event = type,
+								Key = keyCode,
+								Modifiers = mods,
+								UnicodeChar = (char)e.key.keysym.sym,
+								MultiTapCount = tapCount
+							};
+
+							// Special case workaround for windows users
+							if (e.key.keysym.sym == SDL.SDL_Keycode.SDLK_F4 && mods.HasModifier(Modifiers.Alt) &&
+								Platform.CurrentPlatform == PlatformType.Windows)
+								Game.Exit();
+							else
+								inputHandler.OnKeyInput(keyEvent);
+
+							break;
+						}
+				}
+			}
+
+			if (pendingMotion != null)
+			{
+				inputHandler.OnMouseInput(pendingMotion.Value);
+				pendingMotion = null;
+			}
+
+			ErrorHandler.CheckGlError();
+		}
+	}
+}