~ Initial SDL2 implementation

Limitation
- Dependent projects need to set NAZARA_PLATFORM_SDL2 if nazara has been build with SDL2 since OpenGL.hpp (and maybe some other headers) exposes platform details
- SDL2 window doesn't supports async window since the API isn't fitting for now
- Contexts parameters can't be changed until we close all the SDL windows (SDL limitation)

src/Nazara/Platform/SDL2/WindowImpl.hpp

@@ -0,0 +1,113 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Platform module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+// Interface inspirée de la SFML par Laurent Gomila
+
+#pragma once
+
+#ifndef NAZARA_WINDOWIMPL_HPP
+#define NAZARA_WINDOWIMPL_HPP
+
+#include <Nazara/Core/String.hpp>
+#include <Nazara/Core/Thread.hpp>
+#include <Nazara/Math/Rect.hpp>
+#include <Nazara/Math/Vector2.hpp>
+#include <Nazara/Platform/Config.hpp>
+#include <Nazara/Platform/Keyboard.hpp>
+#include <Nazara/Platform/Mouse.hpp>
+#include <Nazara/Platform/VideoMode.hpp>
+#include <Nazara/Platform/Window.hpp>
+#include <Nazara/Prerequisites.hpp>
+#include <SDL2/SDL_events.h>
+#include <SDL2/SDL_keyboard.h>
+#include <SDL2/SDL_video.h>
+
+namespace Nz
+{
+	class ConditionVariable;
+	class Mutex;
+	class Window;
+
+	class WindowImpl
+	{
+		public:
+			WindowImpl(Window* parent);
+			WindowImpl(const WindowImpl&) = delete;
+			WindowImpl(WindowImpl&&) = delete; ///TODO?
+			~WindowImpl() = default;
+
+			bool Create(const VideoMode& mode, const String& title, WindowStyleFlags style);
+			bool Create(WindowHandle handle);
+
+			void Destroy();
+
+			void EnableKeyRepeat(bool enable);
+			void EnableSmoothScrolling(bool enable);
+
+			WindowHandle GetHandle() const;
+			Vector2i GetPosition() const;
+			Vector2ui GetSize() const;
+			WindowStyleFlags GetStyle() const;
+			String GetTitle() const;
+
+			bool HasFocus() const;
+
+			void IgnoreNextMouseEvent(int mouseX, int mouseY);
+
+			bool IsMinimized() const;
+			bool IsVisible() const;
+
+			void RefreshCursor();
+
+			void ProcessEvents(bool block);
+
+			void SetCursor(const Cursor& cursor);
+			void SetEventListener(bool listener);
+			void SetFocus();
+			void SetIcon(const Icon& icon);
+			void SetMaximumSize(int width, int height);
+			void SetMinimumSize(int width, int height);
+			void SetPosition(int x, int y);
+			void SetSize(unsigned int width, unsigned int height);
+			void SetStayOnTop(bool stayOnTop);
+			void SetTitle(const String& title);
+			void SetVisible(bool visible);
+
+			WindowImpl& operator=(const WindowImpl&) = delete;
+			WindowImpl& operator=(WindowImpl&&) = delete; ///TODO?
+
+			static bool Initialize();
+			static void Uninitialize();
+
+		private:
+			int static SDLCALL HandleEvent(void *userdata, SDL_Event * event);
+
+			void PrepareWindow(bool fullscreen);
+
+			static Keyboard::Key SDLKeySymToNazaraKey(SDL_Keysym& keysym);
+			//static void WindowThread(SDL_Window* handle, /*DWORD styleEx,*/ const String& title, /*DWORD style,*/ bool fullscreen, const Rectui& dimensions, WindowImpl* window, Mutex* mutex, ConditionVariable* condition);
+
+			SDL_Cursor* m_cursor;
+			SDL_Window* m_handle;
+			WindowStyleFlags m_style;
+			Vector2i m_maxSize;
+			Vector2i m_minSize;
+			Vector2i m_mousePos;
+			Vector2i m_position;
+			Vector2ui m_size;
+			//Thread m_thread;
+			Window* m_parent;
+			bool m_eventListener;
+			bool m_ignoreNextMouseMove = false;
+			bool m_keyRepeat;
+			bool m_mouseInside;
+			bool m_ownsWindow;
+			bool m_sizemove;
+			bool m_smoothScrolling;
+			bool m_threadActive;
+			short m_scrolling;
+	};
+}
+
+#endif // NAZARA_WINDOWIMPL_HPP