GLContext.h

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// ****************************************************************************
// This file is part of the Integrating Vision Toolkit (IVT).
//
// The IVT is maintained by the Karlsruhe Institute of Technology (KIT)
// (www.kit.edu) in cooperation with the company Keyetech (www.keyetech.de).
//
// Copyright (C) 2014 Karlsruhe Institute of Technology (KIT).
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the KIT nor the names of its contributors may be
//    used to endorse or promote products derived from this software
//    without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE KIT AND CONTRIBUTORS “AS IS” AND ANY
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// ****************************************************************************
// ****************************************************************************
// Filename:  GLContext.h
// Author:    Florian Hecht
// Date:      2008
// ****************************************************************************


#ifndef _GL_CONTEXT_H_
#define _GL_CONTEXT_H_


// ****************************************************************************
// Necessary includes
// ****************************************************************************

#ifdef __APPLE__
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#else
#ifdef WIN32
#include <windows.h>
#endif
#include <GL/gl.h>
#include <GL/glu.h>
#endif

#ifdef USE_QTGUI
#ifdef USE_OPENGL
#include <qgl.h>
#endif
class MyQGLContext;
class QPixmap;
class QApplication;
#endif

#ifdef USE_GTKGUI
#include <GL/glx.h>
#endif


// ****************************************************************************
// Forward declarations
// ****************************************************************************

class CByteImage;

class CGLContext
{
public:
        CGLContext();
        ~CGLContext();

        bool CreateContext(int width, int height, void *shareContext = 0);
        void DeleteContext();

        void MakeCurrent();
        void DoneCurrent();
        bool GetImage(CByteImage *pImage);

private:

#ifdef WIN32
        HDC                             m_hDC;
        HBITMAP                 m_hBmp;
        HBITMAP                 m_hBmpOld;
        HGLRC                   m_hGLRC;

        int                             m_nWidth;
        int                             m_nHeight;
        unsigned char   *m_pPixels;
#endif

#ifdef USE_QTGUI
        QApplication    *m_pApp;
        QPixmap         *m_pPixmap;
        MyQGLContext    *m_pGLContext;
#endif

#ifdef USE_COCOAGUI
        void *m_pGLContext;
        int     m_nWidth;
        int m_nHeight;
        unsigned char *m_pBuffer;
#endif

#ifdef USE_GTKGUI
        Display         *m_pXDisplay;
        GLXContext      m_glxcontext;
        int             m_nWidth;
        int             m_nHeight;
        GLXPixmap       m_glxpixmap;
        Pixmap          m_pFrontBuffer;
#endif

};



#endif /* _GL_CONTEXT_H_ */