Home | All Classes | Main Classes | Annotated | Grouped Classes | Functions |

# ntqimage.h

This is the verbatim text of the ntqimage.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/ntqimage.h   3.3.8   edited Jan 11 14:38 $
    **
    ** Definition of TQImage and TQImageIO classes
    **
    ** Created : 950207
    **
    ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
    **
    ** This file is part of the kernel module of the TQt GUI Toolkit.
    **
    ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file. Alternatively you may (at your option) use any
    ** later version of the GNU General Public License if such license has
    ** been publicly approved by Trolltech ASA (or its successors, if any)
    ** and the KDE Free TQt Foundation.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/.
    ** If you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** This file may be used under the terms of the Q Public License as
    ** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
    ** included in the packaging of this file.  Licensees holding valid TQt
    ** Commercial licenses may use this file in accordance with the TQt
    ** Commercial License Agreement provided with the Software.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
    ** herein.
    **
    **********************************************************************/

    #ifndef TQIMAGE_H
    #define TQIMAGE_H

    #ifndef QT_H
    #include "ntqpixmap.h"
    #include "ntqstrlist.h"
    #include "ntqstringlist.h"
    #endif // QT_H

    class TQImageDataMisc; // internal
    #ifndef TQT_NO_IMAGE_TEXT
    class TQ_EXPORT TQImageTextKeyLang {
    public:
        TQImageTextKeyLang(const char* k, const char* l) : key(k), lang(l) { }
        TQImageTextKeyLang() { }

        TQCString key;
        TQCString lang;

        bool operator< (const TQImageTextKeyLang& other) const
    	{ return key < other.key || key==other.key && lang < other.lang; }
        bool operator== (const TQImageTextKeyLang& other) const
    	{ return key==other.key && lang==other.lang; }
    };
    #endif //TQT_NO_IMAGE_TEXT

    class TQ_EXPORT TQImage
    {
    public:
        enum Endian { IgnoreEndian, BigEndian, LittleEndian };

        TQImage();
        TQImage( int width, int height, int depth, int numColors=0,
    	    Endian bitOrder=IgnoreEndian );
        TQImage( const TQSize&, int depth, int numColors=0,
    	    Endian bitOrder=IgnoreEndian );
    #ifndef TQT_NO_IMAGEIO
        TQImage( const TQString &fileName, const char* format=0 );
        TQImage( const char * const xpm[] );
        TQImage( const TQByteArray &data );
    #endif
        TQImage( uchar* data, int w, int h, int depth,
    		TQRgb* colortable, int numColors,
    		Endian bitOrder );
    #ifdef TQ_WS_QWS
        TQImage( uchar* data, int w, int h, int depth, int pbl,
    		TQRgb* colortable, int numColors,
    		Endian bitOrder );
    #endif
        TQImage( const TQImage & );
       ~TQImage();

        TQImage     &operator=( const TQImage & );
        TQImage     &operator=( const TQPixmap & );
        bool	operator==( const TQImage & ) const;
        bool	operator!=( const TQImage & ) const;
        void	detach();
        TQImage	copy()		const;
        TQImage	copy(int x, int y, int w, int h, int conversion_flags=0) const;
        TQImage	copy(const TQRect&)	const;
    #ifndef TQT_NO_MIME
        static TQImage fromMimeSource( const TQString& abs_name );
    #endif
        bool	isNull()	const	{ return data->bits == 0; }

        int		width()		const	{ return data->w; }
        int		height()	const	{ return data->h; }
        TQSize	size()		const	{ return TQSize(data->w,data->h); }
        TQRect	rect()		const	{ return TQRect(0,0,data->w,data->h); }
        int		depth()		const	{ return data->d; }
        int		numColors()	const	{ return data->ncols; }
        Endian	bitOrder()	const	{ return (Endian) data->bitordr; }

        TQRgb	color( int i )	const;
        void	setColor( int i, TQRgb c );
        void	setNumColors( int );

        bool	hasAlphaBuffer() const;
        void	setAlphaBuffer( bool );

        bool	allGray() const;
        bool        isGrayscale() const;

        uchar      *bits()		const;
        uchar      *scanLine( int ) const;
        uchar     **jumpTable()	const;
        TQRgb       *colorTable()	const;
        int		numBytes()	const;
        int		bytesPerLine()	const;

    #ifdef TQ_WS_QWS
        TQGfx * graphicsContext();
    #endif

        bool	create( int width, int height, int depth, int numColors=0,
    			Endian bitOrder=IgnoreEndian );
        bool	create( const TQSize&, int depth, int numColors=0,
    			Endian bitOrder=IgnoreEndian );
        void	reset();

        void	fill( uint pixel );
        void	invertPixels( bool invertAlpha = TRUE );

        TQImage	convertDepth( int ) const;
    #ifndef TQT_NO_IMAGE_TRUECOLOR
        TQImage	convertDepthWithPalette( int, TQRgb* p, int pc, int cf=0 ) const;
    #endif
        TQImage	convertDepth( int, int conversion_flags ) const;
        TQImage	convertBitOrder( Endian ) const;

        enum ScaleMode {
    	ScaleFree,
    	ScaleMin,
    	ScaleMax
        };
    #ifndef TQT_NO_IMAGE_SMOOTHSCALE
        TQImage smoothScale( int w, int h, ScaleMode mode=ScaleFree ) const;
        TQImage smoothScale( const TQSize& s, ScaleMode mode=ScaleFree ) const;
    #endif
    #ifndef TQT_NO_IMAGE_TRANSFORMATION
        TQImage scale( int w, int h, ScaleMode mode=ScaleFree ) const;
        TQImage scale( const TQSize& s, ScaleMode mode=ScaleFree ) const;
        TQImage scaleWidth( int w ) const;
        TQImage scaleHeight( int h ) const;
        TQImage xForm( const TQWMatrix &matrix ) const;
    #endif

    #ifndef TQT_NO_IMAGE_DITHER_TO_1
        TQImage	createAlphaMask( int conversion_flags=0 ) const;
    #endif
    #ifndef TQT_NO_IMAGE_HEURISTIC_MASK
        TQImage	createHeuristicMask( bool clipTight=TRUE ) const;
    #endif
    #ifndef TQT_NO_IMAGE_MIRROR
        TQImage	mirror() const;
        TQImage	mirror(bool horizontally, bool vertically) const;
    #endif
        TQImage	swapRGB() const;

        static Endian systemBitOrder();
        static Endian systemByteOrder();

    #ifndef TQT_NO_IMAGEIO
        static const char* imageFormat( const TQString &fileName );
        static TQStrList inputFormats();
        static TQStrList outputFormats();
    #ifndef TQT_NO_STRINGLIST
        static TQStringList inputFormatList();
        static TQStringList outputFormatList();
    #endif
        bool	load( const TQString &fileName, const char* format=0 );
        bool	loadFromData( const uchar *buf, uint len,
    			      const char *format=0 );
        bool	loadFromData( TQByteArray data, const char* format=0 );
        bool	save( const TQString &fileName, const char* format,
    		      int quality=-1 ) const;
        bool	save( TQIODevice * device, const char* format,
    		      int quality=-1 ) const;
    #endif //TQT_NO_IMAGEIO

        bool	valid( int x, int y ) const;
        int		pixelIndex( int x, int y ) const;
        TQRgb	pixel( int x, int y ) const;
        void	setPixel( int x, int y, uint index_or_rgb );

        // Auxiliary data
        int dotsPerMeterX() const;
        int dotsPerMeterY() const;
        void setDotsPerMeterX(int);
        void setDotsPerMeterY(int);
        TQPoint offset() const;
        void setOffset(const TQPoint&);
    #ifndef TQT_NO_IMAGE_TEXT
        TQValueList<TQImageTextKeyLang> textList() const;
        TQStringList textLanguages() const;
        TQStringList textKeys() const;
        TQString text(const char* key, const char* lang=0) const;
        TQString text(const TQImageTextKeyLang&) const;
        void setText(const char* key, const char* lang, const TQString&);
    #endif
    private:
        void	init();
        void	reinit();
        void	freeBits();
        static void	warningIndexRange( const char *, int );

        struct TQImageData : public TQShared {	// internal image data
    	int	w;				// image width
    	int	h;				// image height
    	int	d;				// image depth
    	int	ncols;				// number of colors
    	int	nbytes;				// number of bytes data
    	int	bitordr;			// bit order (1 bit depth)
    	TQRgb   *ctbl;				// color table
    	uchar **bits;				// image data
    	bool	alpha;				// alpha buffer
    	int	dpmx;				// dots per meter X (or 0)
    	int	dpmy;				// dots per meter Y (or 0)
    	TQPoint	offset;				// offset in pixels
    #ifndef TQT_NO_IMAGE_TEXT
    	TQImageDataMisc* misc;			// less common stuff
    #endif
    	bool    ctbl_mine;			// this allocated ctbl
        } *data;
    #ifndef TQT_NO_IMAGE_TEXT
        TQImageDataMisc& misc() const;
    #endif
    #ifndef TQT_NO_IMAGEIO
        bool doImageIO( TQImageIO* io, int quality ) const;
    #endif
        friend TQ_EXPORT void bitBlt( TQImage* dst, int dx, int dy,
    				 const TQImage* src, int sx, int sy,
    				 int sw, int sh, int conversion_flags );
    };

    // TQImage stream functions

    #if !defined(TQT_NO_DATASTREAM) && !defined(TQT_NO_IMAGEIO)
    TQ_EXPORT TQDataStream &operator<<( TQDataStream &, const TQImage & );
    TQ_EXPORT TQDataStream &operator>>( TQDataStream &, TQImage & );
    #endif

    #ifndef TQT_NO_IMAGEIO
    class TQIODevice;
    typedef void (*image_io_handler)( TQImageIO * ); // image IO handler

    struct TQImageIOData;

    class TQ_EXPORT TQImageIO
    {
    public:
        TQImageIO();
        TQImageIO( TQIODevice	 *ioDevice, const char *format );
        TQImageIO( const TQString &fileName, const char* format );
       ~TQImageIO();

        const TQImage &image()	const	{ return im; }
        int		status()	const	{ return iostat; }
        const char *format()	const	{ return frmt; }
        TQIODevice  *ioDevice()	const	{ return iodev; }
        TQString	fileName()	const	{ return fname; }
        int		quality()	const;
        TQString	description()	const	{ return descr; }
        const char *parameters()	const;
        float gamma() const;

        void	setImage( const TQImage & );
        void	setStatus( int );
        void	setFormat( const char * );
        void	setIODevice( TQIODevice * );
        void	setFileName( const TQString & );
        void	setQuality( int );
        void	setDescription( const TQString & );
        void	setParameters( const char * );
        void	setGamma( float );

        bool	read();
        bool	write();

        static const char* imageFormat( const TQString &fileName );
        static const char *imageFormat( TQIODevice * );
        static TQStrList inputFormats();
        static TQStrList outputFormats();

        static void defineIOHandler( const char *format,
    				 const char *header,
    				 const char *flags,
    				 image_io_handler read_image,
    				 image_io_handler write_image );

    private:
        void	init();

        TQImage	im;				// image
        int		iostat;				// IO status
        TQCString	frmt;				// image format
        TQIODevice  *iodev;				// IO device
        TQString	fname;				// file name
        char       *params;				// image parameters //### change to TQImageIOData *d in 3.0
        TQString     descr;				// image description
        TQImageIOData *d;

    private:	// Disabled copy constructor and operator=
    #if defined(TQ_DISABLE_COPY)
        TQImageIO( const TQImageIO & );
        TQImageIO &operator=( const TQImageIO & );
    #endif
    };

    #endif //TQT_NO_IMAGEIO

    TQ_EXPORT void bitBlt( TQImage* dst, int dx, int dy, const TQImage* src,
    		      int sx=0, int sy=0, int sw=-1, int sh=-1,
    		      int conversion_flags=0 );

    /*****************************************************************************
      TQImage member functions
     *****************************************************************************/

    inline bool TQImage::hasAlphaBuffer() const
    {
        return data->alpha;
    }

    inline uchar *TQImage::bits() const
    {
        return data->bits ? data->bits[0] : 0;
    }

    inline uchar **TQImage::jumpTable() const
    {
        return data->bits;
    }

    inline TQRgb *TQImage::colorTable() const
    {
        return data->ctbl;
    }

    inline int TQImage::numBytes() const
    {
        return data->nbytes;
    }

    inline int TQImage::bytesPerLine() const
    {
        return data->h ? data->nbytes/data->h : 0;
    }

    inline TQImage TQImage::copy(const TQRect& r) const
    {
        return copy(r.x(), r.y(), r.width(), r.height());
    }

    inline TQRgb TQImage::color( int i ) const
    {
    #if defined(QT_CHECK_RANGE)
        if ( i >= data->ncols )
    	warningIndexRange( "color", i );
    #endif
        return data->ctbl ? data->ctbl[i] : (TQRgb)-1;
    }

    inline void TQImage::setColor( int i, TQRgb c )
    {
    #if defined(QT_CHECK_RANGE)
        if ( i >= data->ncols )
    	warningIndexRange( "setColor", i );
    #endif
        if ( data->ctbl )
    	data->ctbl[i] = c;
    }

    inline uchar *TQImage::scanLine( int i ) const
    {
    #if defined(QT_CHECK_RANGE)
        if ( i >= data->h )
    	warningIndexRange( "scanLine", i );
    #endif
        return data->bits ? data->bits[i] : 0;
    }

    inline int TQImage::dotsPerMeterX() const
    {
        return data->dpmx;
    }

    inline int TQImage::dotsPerMeterY() const
    {
        return data->dpmy;
    }

    inline TQPoint TQImage::offset() const
    {
        return data->offset;
    }

    #endif // TQIMAGE_H