/*
 *	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(_LINUX)
#include <X11/Xlib.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>

// Need at least MESA 9.0 (plan for october/november 2012)
// So force the destiny to at least check the compilation
#ifndef EGL_KHR_create_context
#define EGL_KHR_create_context 1
#define EGL_CONTEXT_MAJOR_VERSION_KHR			    EGL_CONTEXT_CLIENT_VERSION
#define EGL_CONTEXT_MINOR_VERSION_KHR			    0x30FB
#define EGL_CONTEXT_FLAGS_KHR				    0x30FC
#define EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR		    0x30FD
#define EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR  0x31BD
#define EGL_NO_RESET_NOTIFICATION_KHR			    0x31BE
#define EGL_LOSE_CONTEXT_ON_RESET_KHR			    0x31BF
#define EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR		    0x00000001
#define EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR	    0x00000002
#define EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR	    0x00000004
#define EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR		    0x00000001
#define EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR    0x00000002
#endif


class GSWndEGL : public GSWndGL
{
	EGLNativeWindowType    m_NativeWindow;
	EGLNativeDisplayType   m_NativeDisplay;

	EGLDisplay m_eglDisplay;
	EGLSurface m_eglSurface;
	EGLContext m_eglContext;

	void CreateContext(int major, int minor);
	void CheckContext();

	void OpenEGLDisplay();
	void CloseEGLDisplay();

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

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

	void* GetDisplay();
	void* GetHandle() {return (void*)m_NativeWindow;}
	GSVector4i GetClientRect();
	bool SetWindowText(const char* title);

	void AttachContext();
	void DetachContext();
	void* GetProcAddress(const char* name);

	void Show();
	void Hide();
	void HideFrame();
	void Flip();
	void SetVSync(bool enable);
};

#endif