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This is the verbatim text of the qgl.h include file. It is provided only for illustration; the copyright remains with Trolltech.
/****************************************************************************
** $Id: qt/qgl.h 3.0.5 edited Oct 12 2001 $
**
** Definition of OpenGL classes for Qt
**
** Created : 970112
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of the opengl module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition licenses may use this
** file in accordance with the Qt Commercial License Agreement provided
** with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QGL_H
#define QGL_H
#ifndef QT_H
#include <qwidget.h>
#include "qglcolormap.h"
#endif // QT_H
#if !defined( QT_MODULE_OPENGL ) || defined( QT_LICENSE_PROFESSIONAL )
#define QM_EXPORT_OPENGL
#else
#define QM_EXPORT_OPENGL Q_EXPORT
#endif
#ifndef QT_NO_COMPAT
#define QGL_VERSION 450
#define QGL_VERSION_STR "4.5"
QM_EXPORT_OPENGL inline const char *qGLVersion() {
qObsolete( 0, "qGLVersion", "qVersion" );
return QGL_VERSION_STR;
}
#endif
#if defined(Q_WS_WIN)
# include <qt_windows.h>
#endif
#if defined(Q_WS_MAC)
#ifndef QMAC_OPENGL_DOUBLEBUFFER
#define QMAC_OPENGL_DOUBLEBUFFER
#endif
# include <OpenGL/gl.h>
# include <OpenGL/glu.h>
#else
# include <GL/gl.h>
# include <GL/glu.h>
#endif
#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
class QGLCmap;
#endif
class QPixmap;
#if defined(Q_WS_X11)
class QGLOverlayWidget;
#endif
// Namespace class:
class QM_EXPORT_OPENGL QGL
{
public:
enum FormatOption {
DoubleBuffer = 0x0001,
DepthBuffer = 0x0002,
Rgba = 0x0004,
AlphaChannel = 0x0008,
AccumBuffer = 0x0010,
StencilBuffer = 0x0020,
StereoBuffers = 0x0040,
DirectRendering = 0x0080,
HasOverlay = 0x0100,
SingleBuffer = DoubleBuffer << 16,
NoDepthBuffer = DepthBuffer << 16,
ColorIndex = Rgba << 16,
NoAlphaChannel = AlphaChannel << 16,
NoAccumBuffer = AccumBuffer << 16,
NoStencilBuffer = StencilBuffer << 16,
NoStereoBuffers = StereoBuffers << 16,
IndirectRendering = DirectRendering << 16,
NoOverlay = HasOverlay << 16
};
};
class QM_EXPORT_OPENGL QGLFormat : public QGL
{
public:
QGLFormat();
QGLFormat( int options, int plane = 0 );
bool doubleBuffer() const;
void setDoubleBuffer( bool enable );
bool depth() const;
void setDepth( bool enable );
bool rgba() const;
void setRgba( bool enable );
bool alpha() const;
void setAlpha( bool enable );
bool accum() const;
void setAccum( bool enable );
bool stencil() const;
void setStencil( bool enable );
bool stereo() const;
void setStereo( bool enable );
bool directRendering() const;
void setDirectRendering( bool enable );
bool hasOverlay() const;
void setOverlay( bool enable );
int plane() const;
void setPlane( int plane );
void setOption( FormatOption opt );
bool testOption( FormatOption opt ) const;
static QGLFormat defaultFormat();
static void setDefaultFormat( const QGLFormat& f );
static QGLFormat defaultOverlayFormat();
static void setDefaultOverlayFormat( const QGLFormat& f );
static bool hasOpenGL();
static bool hasOpenGLOverlays();
friend QM_EXPORT_OPENGL bool operator==( const QGLFormat&, const QGLFormat& );
friend QM_EXPORT_OPENGL bool operator!=( const QGLFormat&, const QGLFormat& );
private:
uint opts;
int pln;
};
QM_EXPORT_OPENGL bool operator==( const QGLFormat&, const QGLFormat& );
QM_EXPORT_OPENGL bool operator!=( const QGLFormat&, const QGLFormat& );
class QM_EXPORT_OPENGL QGLContext : public QGL
{
public:
QGLContext( const QGLFormat& format, QPaintDevice* device );
virtual ~QGLContext();
virtual bool create( const QGLContext* shareContext = 0 );
bool isValid() const;
bool isSharing() const;
virtual void reset();
QGLFormat format() const;
QGLFormat requestedFormat() const;
virtual void setFormat( const QGLFormat& format );
virtual void makeCurrent();
virtual void swapBuffers() const;
QPaintDevice* device() const;
QColor overlayTransparentColor() const;
static const QGLContext* currentContext();
protected:
virtual bool chooseContext( const QGLContext* shareContext = 0 );
virtual void doneCurrent();
#if defined(Q_WS_WIN)
virtual int choosePixelFormat( void* pfd, HDC pdc );
#elif defined(Q_WS_X11)
virtual void* tryVisual( const QGLFormat& f, int bufDepth = 1 );
virtual void* chooseVisual();
#elif defined(Q_WS_MAC)
virtual void* chooseMacVisual(GDHandle);
#endif
bool deviceIsPixmap() const;
bool windowCreated() const;
void setWindowCreated( bool on );
bool initialized() const;
void setInitialized( bool on );
uint colorIndex( const QColor& c ) const;
protected:
#if defined(Q_WS_WIN)
HGLRC rc;
HDC dc;
WId win;
int pixelFormatId;
QGLCmap* cmap;
#elif defined(Q_WS_X11)
void* vi;
void* cx;
Q_UINT32 gpm;
#elif defined(Q_WS_MAC)
void* vi;
void* cx;
#endif
QGLFormat glFormat;
QGLFormat reqFormat;
private:
class Private {
public:
bool valid;
bool sharing;
bool initDone;
bool crWin;
QPaintDevice* paintDevice;
QColor transpColor;
};
Private* d;
static QGLContext* currentCtx;
friend class QGLWidget;
#ifdef Q_WS_MAC
void fixBufferRect();
#endif
private: // Disabled copy constructor and operator=
QGLContext() {}
QGLContext( const QGLContext& ) {}
QGLContext& operator=( const QGLContext& ) { return *this; }
};
class QM_EXPORT_OPENGL QGLWidget : public QWidget, public QGL
{
Q_OBJECT
public:
QGLWidget( QWidget* parent=0, const char* name=0,
const QGLWidget* shareWidget = 0, WFlags f=0 );
QGLWidget( const QGLFormat& format, QWidget* parent=0, const char* name=0,
const QGLWidget* shareWidget = 0, WFlags f=0 );
~QGLWidget();
void qglColor( const QColor& c ) const;
void qglClearColor( const QColor& c ) const;
bool isValid() const;
bool isSharing() const;
virtual void makeCurrent();
bool doubleBuffer() const;
virtual void swapBuffers();
QGLFormat format() const;
#ifndef Q_QDOC
virtual void setFormat( const QGLFormat& format );
#endif
const QGLContext* context() const;
#ifndef Q_QDOC
virtual void setContext( QGLContext* context,
const QGLContext* shareContext = 0,
bool deleteOldContext = TRUE );
#endif
virtual QPixmap renderPixmap( int w = 0, int h = 0,
bool useContext = FALSE );
virtual QImage grabFrameBuffer( bool withAlpha = FALSE );
virtual void makeOverlayCurrent();
const QGLContext* overlayContext() const;
static QImage convertToGLFormat( const QImage& img );
void setMouseTracking( bool enable );
virtual void reparent( QWidget* parent, WFlags f, const QPoint& p,
bool showIt = FALSE );
const QGLColormap & colormap() const;
void setColormap( const QGLColormap & map );
public slots:
virtual void updateGL();
virtual void updateOverlayGL();
protected:
virtual void initializeGL();
virtual void resizeGL( int w, int h );
virtual void paintGL();
virtual void initializeOverlayGL();
virtual void resizeOverlayGL( int w, int h );
virtual void paintOverlayGL();
void setAutoBufferSwap( bool on );
bool autoBufferSwap() const;
void paintEvent( QPaintEvent* );
void resizeEvent( QResizeEvent* );
virtual void glInit();
virtual void glDraw();
private:
void cleanupColormaps();
void init( const QGLFormat& fmt,
const QGLWidget* shareWidget );
bool renderCxPm( QPixmap* pm );
QGLContext* glcx;
bool autoSwap;
QGLColormap cmap;
#if defined(Q_WS_WIN)
QGLContext* olcx;
#elif defined(Q_WS_X11)
QGLOverlayWidget* olw;
friend class QGLOverlayWidget;
#elif defined(Q_WS_MAC)
QGLContext* olcx;
#endif
private: // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
QGLWidget( const QGLWidget& );
QGLWidget& operator=( const QGLWidget& );
#endif
#ifdef Q_WS_MAC
private:
#ifdef QMAC_OPENGL_DOUBLEBUFFER
QPaintDevice *gl_pix;
QGLFormat req_format;
#endif
friend class QWidget;
void fixReparented();
void fixBufferRect();
#endif
};
//
// QGLFormat inline functions
//
inline bool QGLFormat::doubleBuffer() const
{
return testOption( DoubleBuffer );
}
inline bool QGLFormat::depth() const
{
return testOption( DepthBuffer );
}
inline bool QGLFormat::rgba() const
{
return testOption( Rgba );
}
inline bool QGLFormat::alpha() const
{
return testOption( AlphaChannel );
}
inline bool QGLFormat::accum() const
{
return testOption( AccumBuffer );
}
inline bool QGLFormat::stencil() const
{
return testOption( StencilBuffer );
}
inline bool QGLFormat::stereo() const
{
return testOption( StereoBuffers );
}
inline bool QGLFormat::directRendering() const
{
return testOption( DirectRendering );
}
inline bool QGLFormat::hasOverlay() const
{
return testOption( HasOverlay );
}
//
// QGLContext inline functions
//
inline bool QGLContext::isValid() const
{
return d->valid;
}
inline bool QGLContext::isSharing() const
{
return d->sharing;
}
inline QGLFormat QGLContext::format() const
{
return glFormat;
}
inline QGLFormat QGLContext::requestedFormat() const
{
return reqFormat;
}
inline QPaintDevice* QGLContext::device() const
{
return d->paintDevice;
}
inline bool QGLContext::deviceIsPixmap() const
{
return d->paintDevice->devType() == QInternal::Pixmap;
}
inline bool QGLContext::windowCreated() const
{
return d->crWin;
}
inline void QGLContext::setWindowCreated( bool on )
{
d->crWin = on;
}
inline bool QGLContext::initialized() const
{
return d->initDone;
}
inline void QGLContext::setInitialized( bool on )
{
d->initDone = on;
}
inline const QGLContext* QGLContext::currentContext()
{
return currentCtx;
}
//
// QGLWidget inline functions
//
inline QGLFormat QGLWidget::format() const
{
return glcx->format();
}
inline const QGLContext *QGLWidget::context() const
{
return glcx;
}
inline bool QGLWidget::doubleBuffer() const
{
return glcx->format().doubleBuffer();
}
inline void QGLWidget::setAutoBufferSwap( bool on )
{
autoSwap = on;
}
inline bool QGLWidget::autoBufferSwap() const
{
return autoSwap;
}
#ifdef Q_WS_MAC
inline void QGLWidget::fixBufferRect()
{
glcx->fixBufferRect();
}
#endif
#endif
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