/*
 *	Copyright (C) 2007-2012 Gabest
 *	http://www.gabest.org
 *
 *  This Program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This Program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA USA.
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */

#include "GSWnd.h"

#if defined(__unix__)
#include <EGL/egl.h>
#include <EGL/eglext.h>

#define GS_EGL_X11 1
#define GS_EGL_WL 0

class GSWndEGL : public GSWndGL
{
	void *m_native_window;

	EGLDisplay m_eglDisplay;
	EGLSurface m_eglSurface;
	EGLContext m_eglContext;

	int m_platform;

	void PopulateWndGlFunction();
	void CreateContext(int major, int minor);
	void BindAPI();

	void SetSwapInterval() final;
	bool HasLateVsyncSupport() final { return false; }

	void OpenEGLDisplay();
	void CloseEGLDisplay();

public:
	GSWndEGL(int platform);
	virtual ~GSWndEGL() {};

	bool Create(const std::string& title, int w, int h) final;
	bool Attach(void* handle, bool managed = true) final;
	void Detach() final;

	virtual void *CreateNativeDisplay() = 0;
	virtual void *CreateNativeWindow(int w, int h) = 0; // GSopen1/PSX API
	virtual void *AttachNativeWindow(void *handle) = 0;
	virtual void DestroyNativeResources() = 0;

	GSVector4i GetClientRect();
	virtual bool SetWindowText(const char* title) = 0; // GSopen1/PSX API

	void AttachContext() final;
	void DetachContext() final;
	void* GetProcAddress(const char* name, bool opt = false) final;

	void Flip() final;

	// Deprecated API
	void Show() final {};
	void Hide() final {};
	void HideFrame() final {}; // DX9 API

	virtual void* GetDisplay() = 0; // GSopen1 API
	virtual void* GetHandle() = 0; // DX API

	// Static to allow to query supported the platform
	// before object creation
	static int SelectPlatform();
};

#if GS_EGL_X11

#include <xcb/xcb.h>
#include <X11/Xlib.h>
#include <X11/Xlib-xcb.h>

class GSWndEGL_X11 : public GSWndEGL
{
	Display  *m_NativeDisplay;
	Window    m_NativeWindow;

	public:
	GSWndEGL_X11();
	virtual ~GSWndEGL_X11() {};

	void* GetDisplay() final { return (void*)m_NativeDisplay;}
	void* GetHandle() final {return (void*)&m_NativeWindow;}

	void *CreateNativeDisplay() final;
	void *CreateNativeWindow(int w, int h) final;
	void *AttachNativeWindow(void *handle) final;
	void DestroyNativeResources() final;

	bool SetWindowText(const char* title) final;
};

#endif

#if GS_EGL_WL

// Which include ?
#include <wayland-client.h>
#include <wayland-server.h>
#include <wayland-client-protocol.h>
#include <wayland-egl.h>

class GSWndEGL_WL : public GSWndEGL
{
	wl_display    *m_NativeDisplay;
	wl_egl_window *m_NativeWindow;

	public:
	GSWndEGL_WL();
	virtual ~GSWndEGL_WL() {};

	void* GetDisplay() final { return (void*)m_NativeDisplay;}
	void* GetHandle() final {return (void*)m_NativeWindow;}

	void *CreateNativeDisplay() final;
	void *CreateNativeWindow(int w, int h) final;
	void *AttachNativeWindow(void *handle) final;
	void DestroyNativeResources() final;

	bool SetWindowText(const char* title) final;
};

#endif

#endif
