qpixmap.h

/****************************************************************************
** $Id: qpixmap.h,v 2.22 1998/07/03 00:09:37 hanord Exp $
**
** Definition of QPixmap class
**
** Created : 940501
**
** Copyright (C) 1992-1998 Troll Tech AS.  All rights reserved.
**
** This file is part of Qt Free Edition, version 1.40.
**
** See the file LICENSE included in the distribution for the usage
** and distribution terms, or http://www.troll.no/free-license.html.
**
** IMPORTANT NOTE: You may NOT copy this file or any part of it into
** your own programs or libraries.
**
** Please see http://www.troll.no/pricing.html for information about 
** Qt Professional Edition, which is this same library but with a
** license which allows creation of commercial/proprietary software.
**
*****************************************************************************/

#ifndef QPIXMAP_H
#define QPIXMAP_H

#ifndef QT_H
#include "qpaintdevice.h"
#include "qcolor.h"
#include "qstring.h"
#endif // QT_H


class QPixmap : public QPaintDevice             // pixmap class
{
friend class QPaintDevice;
friend class QPainter;
public:
    enum ColorMode { Auto, Color, Mono };

    QPixmap();
    QPixmap( int w, int h,  int depth=-1 );
    QPixmap( const QSize &, int depth=-1 );
    QPixmap( const char *fileName, const char *format=0, ColorMode mode=Auto );
    QPixmap( const char *fileName, const char *format, int conversion_flags );
    QPixmap( const char *xpm[] );
    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=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;
    QBitmap     createHeuristicMask( bool clipTight = TRUE ) const;

    static  QPixmap  grabWindow( WId, int x=0, int y=0, int w=-1, int h=-1 );

    QPixmap         xForm( const QWMatrix & ) const;
    static QWMatrix trueMatrix( const QWMatrix &, int w, int h );

    QImage      convertToImage() const;
    bool        convertFromImage( const QImage &, ColorMode mode=Auto );
    bool        convertFromImage( const QImage &, int conversion_flags );

    static const char *imageFormat( const char *fileName );
    bool        load( const char *fileName, const char *format=0,
                      ColorMode mode=Auto );
    bool        load( const char *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( QByteArray data,
                              const char *format=0,
                              int conversion_flags=0 );
    bool        save( const char *fileName, const char *format ) const;

#if defined(_WS_WIN_) || defined(_WS_PM_)
    HANDLE      hbm()           const;
#endif

    int         serialNumber()  const;

    enum Optimization { NoOptim, NormalOptim, BestOptim };

    Optimization        optimization() const;
    void                setOptimization( Optimization );
    static Optimization defaultOptimization();
    static void         setDefaultOptimization( Optimization );
    
#if 1
    bool        isOptimized()   const;
    void        optimize( bool );
    static bool isGloballyOptimized();
    static void optimizeGlobally( bool );
#endif

    virtual void detach();

    bool        isQBitmap()     const;

protected:
    QPixmap( int w, int h, const uchar *data, bool isXbitmap );
    int         metric( int ) const;

#if defined(_WS_WIN_)
    HANDLE      allocMemDC();
    void        freeMemDC();
#endif

    struct QPixmapData : public QShared {       // internal pixmap data
        QCOORD  w, h;
        short   d;
        uint    unused   : 1;
        uint    optim    : 1;
        uint    uninit   : 1;
        uint    bitmap   : 1;
        uint    selfmask : 1;
        int     ser_no;
        QBitmap *mask;
#if defined(_WS_WIN_)
        HANDLE  hbm;
        void   *bits;
        QPixmap *maskpm;
#elif defined(_WS_PM_)
        HANDLE  hdcmem;
        HANDLE  hbm;
#elif defined(_WS_X11_)
        void   *ximage;
        void   *maskgc;
#endif
        Optimization opt;
    } *data;

private:
    void        init( int, int, int );
    void        deref();
    QPixmap     copy() const;
    static bool optimAll;
    static Optimization defOpt;
    friend void bitBlt( QPaintDevice *, int, int, const QPaintDevice *,
                        int, int, int, int, RasterOp, bool );
    friend void bitBlt( QPaintDevice *, int, int, const QImage* src,
                        int, int, int, int, int conversion_flags );
};


inline bool QPixmap::isNull() const
{
#if defined(_WS_X11_)
    return hd == 0;
#else
    return data->hbm == 0;
#endif
}

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(_WS_WIN_) || defined(_WS_PM_)
inline HANDLE QPixmap::hbm() const
{
    return data->hbm;
}
#endif

inline int QPixmap::serialNumber() const
{
    return data->ser_no;
}

inline QPixmap::Optimization QPixmap::optimization() const
{
    return data->opt;
}

inline bool QPixmap::isOptimized() const
{
    return data->optim;
}

inline bool QPixmap::isQBitmap() const
{
    return data->bitmap;
}


/*****************************************************************************
  QPixmap stream functions
 *****************************************************************************/

QDataStream &operator<<( QDataStream &, const QPixmap & );
QDataStream &operator>>( QDataStream &, QPixmap & );


#endif // QPIXMAP_H