qpixmap.h
This is the verbatim text of the qpixmap.h include file. It is provided only for illustration; the copyright remains with Trolltech.
/****************************************************************************
** $Id$
**
** Definition of QPixmap class
**
** Created : 940501
**
** Copyright (C) 1992-2002 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
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**********************************************************************/
#ifndef QPIXMAP_H
#define QPIXMAP_H
#ifndef QT_H
#include "qpaintdevice.h"
#include "qcolor.h" // char*->QColor conversion
#include "qstring.h" // char*->QString conversion
#include "qnamespace.h"
#endif // QT_H
class QGfx;
class QPixmapPrivate;
#if defined(Q_WS_WIN)
// Internal pixmap memory optimization class for Windows 9x
class QMultiCellPixmap;
#endif
class Q_EXPORT QPixmap : public QPaintDevice, public Qt
{
public:
enum ColorMode { Auto, Color, Mono };
enum Optimization { DefaultOptim, NoOptim, MemoryOptim=NoOptim,
NormalOptim, BestOptim };
QPixmap();
QPixmap( const QImage& image );
QPixmap( int w, int h, int depth = -1, Optimization = DefaultOptim );
QPixmap( const QSize &, int depth = -1, Optimization = DefaultOptim );
#ifndef QT_NO_IMAGEIO
QPixmap( const QString& fileName, const char *format=0,
ColorMode mode=Auto );
QPixmap( const QString& fileName, const char *format,
int conversion_flags );
QPixmap( const char *xpm[] ); // ### in 4.0, 'const char * const xpm[]'?
QPixmap( const QByteArray &data );
#endif
QPixmap( const QPixmap & );
~QPixmap();
QPixmap &operator=( const QPixmap & );
QPixmap &operator=( const QImage & );
bool isNull() const;
int width() const { return data->w; }
int height() const { return data->h; }
QSize size() const { return QSize(data->w,data->h); }
QRect rect() const { return QRect(0,0,data->w,data->h); }
int depth() const { return data->d; }
static int defaultDepth();
void fill( const QColor &fillColor = Qt::white );
void fill( const QWidget *, int xofs, int yofs );
void fill( const QWidget *, const QPoint &ofs );
void resize( int width, int height );
void resize( const QSize & );
const QBitmap *mask() const;
void setMask( const QBitmap & );
bool selfMask() const;
bool hasAlpha() const;
bool hasAlphaChannel() const;
#ifndef QT_NO_IMAGE_HEURISTIC_MASK
QBitmap createHeuristicMask( bool clipTight = TRUE ) const;
#endif
#ifndef QT_NO_MIME
static QPixmap fromMimeSource( const QString& abs_name );
#endif
static QPixmap grabWindow( WId, int x=0, int y=0, int w=-1, int h=-1 );
static QPixmap grabWidget( QWidget * widget,
int x=0, int y=0, int w=-1, int h=-1 );
#ifndef QT_NO_PIXMAP_TRANSFORMATION
QPixmap xForm( const QWMatrix & ) const;
static QWMatrix trueMatrix( const QWMatrix &, int w, int h );
#endif
QImage convertToImage() const;
bool convertFromImage( const QImage &, ColorMode mode=Auto );
bool convertFromImage( const QImage &, int conversion_flags );
#ifndef QT_NO_IMAGEIO
static const char* imageFormat( const QString &fileName );
bool load( const QString& fileName, const char *format=0,
ColorMode mode=Auto );
bool load( const QString& fileName, const char *format,
int conversion_flags );
bool loadFromData( const uchar *buf, uint len,
const char* format=0,
ColorMode mode=Auto );
bool loadFromData( const uchar *buf, uint len,
const char* format,
int conversion_flags );
bool loadFromData( const QByteArray &data,
const char* format=0,
int conversion_flags=0 );
bool save( const QString& fileName, const char* format, int quality = -1 ) const;
bool save( QIODevice* device, const char* format, int quality = -1 ) const;
#endif
#if defined(Q_WS_WIN)
HBITMAP hbm() const;
#endif
int serialNumber() const;
Optimization optimization() const;
void setOptimization( Optimization );
static Optimization defaultOptimization();
static void setDefaultOptimization( Optimization );
virtual void detach();
bool isQBitmap() const;
#if defined(Q_WS_WIN)
// These functions are internal and used by Windows 9x only
bool isMultiCellPixmap() const;
HDC multiCellHandle() const;
HBITMAP multiCellBitmap() const;
int multiCellOffset() const;
int allocCell();
void freeCell( bool = FALSE );
#endif
#if defined(Q_WS_QWS)
virtual QGfx * graphicsContext(bool clip_children=TRUE) const;
virtual unsigned char * scanLine(int) const;
virtual int bytesPerLine() const;
QRgb * clut() const;
int numCols() const;
#elif defined(Q_WS_X11)
static int x11SetDefaultScreen( int screen );
void x11SetScreen( int screen );
#endif
Q_DUMMY_COMPARISON_OPERATOR(QPixmap)
protected:
QPixmap( int w, int h, const uchar *data, bool isXbitmap );
int metric( int ) const;
#if defined(Q_WS_WIN)
struct QMCPI { // mem optim for win9x
QMultiCellPixmap *mcp;
int offset;
};
#endif
struct QPixmapData : public QShared { // internal pixmap data
QCOORD w, h;
short d;
uint uninit : 1;
uint bitmap : 1;
uint selfmask : 1;
#if defined(Q_WS_WIN)
uint mcp : 1;
#endif
int ser_no;
QBitmap *mask;
#if defined(Q_WS_WIN)
QPixmap *maskpm;
union {
HBITMAP hbm; // if mcp == FALSE
QMCPI *mcpi; // if mcp == TRUE
} hbm_or_mcpi;
uchar *realAlphaBits;
#ifdef Q_OS_TEMP
uchar* ppvBits; // Pointer to DIBSection bits
#endif
#elif defined(Q_WS_X11)
void *ximage;
void *maskgc;
QPixmap *alphapm;
#elif defined(Q_WS_MAC)
ColorTable *clut;
QPixmap *alphapm;
#elif defined(Q_WS_QWS)
int id; // ### should use QPaintDevice::hd, since it is there
QRgb * clut;
int numcols;
int rw;
int rh;
bool hasAlpha;
#endif
Optimization optim;
#if defined(Q_WS_WIN)
HBITMAP old_hbm;
#endif
} *data;
private:
#ifndef QT_NO_IMAGEIO
bool doImageIO( QImageIO* io, int quality ) const;
#endif
QPixmap( int w, int h, int depth, bool, Optimization );
void init( int, int, int, bool, Optimization );
void deref();
QPixmap copy( bool ignoreMask = FALSE ) const;
#if defined(Q_WS_WIN)
void initAlphaPixmap( uchar *bytes, int length, struct tagBITMAPINFO *bmi );
void convertToAlphaPixmap( bool initAlpha=TRUE );
static void bitBltAlphaPixmap( QPixmap *dst, int dx, int dy,
const QPixmap *src, int sx, int sy,
int sw, int sh, bool useDstAlpha );
#endif
static Optimization defOptim;
friend Q_EXPORT void bitBlt( QPaintDevice *, int, int,
const QPaintDevice *,
int, int, int, int, RasterOp, bool );
friend Q_EXPORT void bitBlt( QPaintDevice *, int, int,
const QImage* src,
int, int, int, int, int conversion_flags );
friend Q_EXPORT void copyBlt( QPixmap *dst, int dx, int dy,
const QPixmap *src, int sx, int sy,
int sw, int sh );
#if defined(Q_WS_MAC)
friend void unclippedScaledBitBlt(QPaintDevice *, int, int, int, int,
const QPaintDevice *, int, int, int, int,
Qt::RasterOp, bool, bool);
#endif
friend class QBitmap;
friend class QPaintDevice;
friend class QPainter;
};
inline bool QPixmap::isNull() const
{
return data->w == 0;
}
inline void QPixmap::fill( const QWidget *w, const QPoint &ofs )
{
fill( w, ofs.x(), ofs.y() );
}
inline void QPixmap::resize( const QSize &s )
{
resize( s.width(), s.height() );
}
inline const QBitmap *QPixmap::mask() const
{
return data->mask;
}
inline bool QPixmap::selfMask() const
{
return data->selfmask;
}
#if defined(Q_WS_WIN)
inline HBITMAP QPixmap::hbm() const
{
return data->mcp ? 0 : data->hbm_or_mcpi.hbm;
}
#endif
inline int QPixmap::serialNumber() const
{
return data->ser_no;
}
inline QPixmap::Optimization QPixmap::optimization() const
{
return data->optim;
}
inline bool QPixmap::isQBitmap() const
{
return data->bitmap;
}
#if defined(Q_WS_WIN)
inline bool QPixmap::isMultiCellPixmap() const
{
return data->mcp;
}
#endif
/*****************************************************************************
QPixmap stream functions
*****************************************************************************/
#if !defined(QT_NO_DATASTREAM) && !defined(QT_NO_IMAGEIO)
Q_EXPORT QDataStream &operator<<( QDataStream &, const QPixmap & );
Q_EXPORT QDataStream &operator>>( QDataStream &, QPixmap & );
#endif
/*****************************************************************************
QPixmap (and QImage) helper functions
*****************************************************************************/
#ifndef QT_NO_PIXMAP_TRANSFORMATION
# define QT_XFORM_TYPE_MSBFIRST 0
# define QT_XFORM_TYPE_LSBFIRST 1
# if defined(Q_WS_WIN)
# define QT_XFORM_TYPE_WINDOWSPIXMAP 2
# endif
bool qt_xForm_helper( const QWMatrix&, int, int, int, uchar*, int, int, int, uchar*, int, int, int );
#endif
Q_EXPORT void copyBlt( QPixmap *dst, int dx, int dy,
const QPixmap *src, int sx = 0, int sy = 0,
int sw = -1, int sh = -1 );
#endif // QPIXMAP_H
