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/****************************************************************************
** $Id$
**
** Definition of some shared interal classes
**
** Created : 010427
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of the kernel 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 or Qt Professional 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 SECQINTERNAL_P_H
#define SECQINTERNAL_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of a number of Qt sources files. This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//
//
#ifndef QT_H
#include "qnamespace.h"
#include "qrect.h"
#include "qptrlist.h"
#include "qcstring.h"
#include "qiodevice.h"
#endif // QT_H
class QWidget;
class QPainter;
class QPixmap;
class Q_EXPORT SecQSharedDoubleBuffer
{
public:
enum DoubleBufferFlags {
NoFlags = 0x00,
InitBG = 0x01,
Force = 0x02,
Default = InitBG | Force
};
typedef uint DBFlags;
SecQSharedDoubleBuffer( DBFlags f = Default );
SecQSharedDoubleBuffer( QWidget* widget,
int x = 0, int y = 0, int w = -1, int h = -1,
DBFlags f = Default );
SecQSharedDoubleBuffer( QPainter* painter,
int x = 0, int y = 0, int w = -1, int h = -1,
DBFlags f = Default );
SecQSharedDoubleBuffer( QWidget *widget, const QRect &r, DBFlags f = Default );
SecQSharedDoubleBuffer( QPainter *painter, const QRect &r, DBFlags f = Default );
~SecQSharedDoubleBuffer();
bool begin( QWidget* widget, int x = 0, int y = 0, int w = -1, int h = -1 );
bool begin( QPainter* painter, int x = 0, int y = 0, int w = -1, int h = -1);
bool begin( QWidget* widget, const QRect &r );
bool begin( QPainter* painter, const QRect &r );
bool end();
QPainter* painter() const;
bool isActive() const;
bool isBuffered() const;
void flush();
static bool isDisabled() { return !dblbufr; }
static void setDisabled( bool off ) { dblbufr = !off; }
static void cleanup();
private:
enum DoubleBufferState {
Active = 0x0100,
BufferActive = 0x0200,
ExternalPainter = 0x0400
};
typedef uint DBState;
QPixmap *getPixmap();
void releasePixmap();
QWidget *wid;
int rx, ry, rw, rh;
DBFlags flags;
DBState state;
QPainter *p, *external_p;
QPixmap *pix;
static bool dblbufr;
};
inline bool SecQSharedDoubleBuffer::begin( QWidget* widget, const QRect &r )
{ return begin( widget, r.x(), r.y(), r.width(), r.height() ); }
inline bool SecQSharedDoubleBuffer::begin( QPainter *painter, const QRect &r )
{ return begin( painter, r.x(), r.y(), r.width(), r.height() ); }
inline QPainter* SecQSharedDoubleBuffer::painter() const
{ return p; }
inline bool SecQSharedDoubleBuffer::isActive() const
{ return ( state & Active ); }
inline bool SecQSharedDoubleBuffer::isBuffered() const
{ return ( state & BufferActive ); }
#endif // SECQINTERNAL_P_H

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