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# ntqcolor.h

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

    /****************************************************************************
    ** $Id: qt/ntqcolor.h   3.3.8   edited Jan 11 14:38 $
    **
    ** Definition of TQColor class
    **
    ** Created : 940112
    **
    ** 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 TQCOLOR_H
    #define TQCOLOR_H

    #ifndef QT_H
    #include "ntqwindowdefs.h"
    #include "ntqstringlist.h"
    #endif // QT_H

    const TQRgb  TQT_RGB_MASK    = 0x00ffffff;		// masks RGB values

    Q_EXPORT inline int tqRed( TQRgb rgb )		// get red part of RGB
    { return (int)((rgb >> 16) & 0xff); }

    Q_EXPORT inline int tqGreen( TQRgb rgb )		// get green part of RGB
    { return (int)((rgb >> 8) & 0xff); }

    Q_EXPORT inline int tqBlue( TQRgb rgb )		// get blue part of RGB
    { return (int)(rgb & 0xff); }

    Q_EXPORT inline int tqAlpha( TQRgb rgb )		// get alpha part of RGBA
    { return (int)((rgb >> 24) & 0xff); }

    Q_EXPORT inline TQRgb tqRgb( int r, int g, int b )// set RGB value
    { return (0xff << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }

    Q_EXPORT inline TQRgb tqRgba( int r, int g, int b, int a )// set RGBA value
    { return ((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }

    Q_EXPORT inline int tqGray( int r, int g, int b )// convert R,G,B to gray 0..255
    { return (r*11+g*16+b*5)/32; }

    Q_EXPORT inline int tqGray( TQRgb rgb )		// convert RGB to gray 0..255
    { return tqGray( tqRed(rgb), tqGreen(rgb), tqBlue(rgb) ); }

    class Q_EXPORT TQColor
    {
    public:
        enum Spec { Rgb, Hsv };

        TQColor();
        TQColor( int r, int g, int b );
        TQColor( int x, int y, int z, Spec );
        TQColor( TQRgb rgb, uint pixel=0xffffffff);
        TQColor( const TQString& name );
        TQColor( const char *name );
        TQColor( const TQColor & );
        TQColor &operator=( const TQColor & );

        bool   isValid() const;
        bool   isDirty() const;
        TQString name() const;
        void   setNamedColor( const TQString& name );

        TQRgb   rgb()    const;
        void   setRgb( int r, int g, int b );
        void   setRgb( TQRgb rgb );
        void   getRgb( int *r, int *g, int *b ) const { rgb( r, g, b ); }
        void   rgb( int *r, int *g, int *b ) const; // obsolete

        int	   red()    const;
        int	   green()  const;
        int	   blue()   const;

        void   setHsv( int h, int s, int v );
        void   getHsv( int *h, int *s, int *v ) const { hsv( h, s, v ); }
        void   hsv( int *h, int *s, int *v ) const; // obsolete
        void   getHsv( int &h, int &s, int &v ) const { hsv( &h, &s, &v ); } // obsolete

        TQColor light( int f = 150 ) const;
        TQColor dark( int f = 200 )	const;

        bool   operator==( const TQColor &c ) const;
        bool   operator!=( const TQColor &c ) const;

        uint   alloc();
        uint   pixel()  const;

    #if defined(Q_WS_X11)
        // ### in 4.0, make this take a default argument of -1 for default screen?
        uint alloc( int screen );
        uint pixel( int screen ) const;
    #endif

        static int  maxColors();
        static int  numBitPlanes();

        static int  enterAllocContext();
        static void leaveAllocContext();
        static int  currentAllocContext();
        static void destroyAllocContext( int );

    #if defined(Q_WS_WIN)
        static const TQRgb* palette( int* numEntries = 0 );
        static int setPaletteEntries( const TQRgb* entries, int numEntries,
    				  int base = -1 );
        static HPALETTE hPal()  { return hpal; }
        static uint	realizePal( TQWidget * );
    #endif

        static void initialize();
        static void cleanup();
    #ifndef QT_NO_STRINGLIST
        static TQStringList colorNames();
    #endif
        enum { Dirt = 0x44495254, Invalid = 0x49000000 };

    private:
        void setSystemNamedColor( const TQString& name );
        void setPixel( uint pixel );
        static void initGlobalColors();
        static uint argbToPix32(TQRgb);
        static TQColor* globalColors();
        static bool color_init;
        static bool globals_init;
    #if defined(Q_WS_WIN)
        static HPALETTE hpal;
    #endif
        static enum ColorModel { d8, d32 } colormodel;
        union {
    	TQRgb argb;
    	struct D8 {
    	    TQRgb argb;
    	    uchar pix;
    	    uchar invalid;
    	    uchar dirty;
    	    uchar direct;
    	} d8;
    	struct D32 {
    	    TQRgb argb;
    	    uint pix;
    	    bool invalid() const { return argb == TQColor::Invalid && pix == TQColor::Dirt; }
    	    bool probablyDirty() const { return pix == TQColor::Dirt; }
    	} d32;
        } d;
    };

    inline TQColor::TQColor()
    { d.d32.argb = Invalid; d.d32.pix = Dirt; }

    inline TQColor::TQColor( int r, int g, int b )
    {
        d.d32.argb = Invalid;
        d.d32.pix = Dirt;
        setRgb( r, g, b );
    }

    inline TQRgb TQColor::rgb() const
    { return d.argb; }

    inline int TQColor::red() const
    { return tqRed(d.argb); }

    inline int TQColor::green() const
    { return tqGreen(d.argb); }

    inline int TQColor::blue() const
    { return tqBlue(d.argb); }

    inline bool TQColor::isValid() const
    {
        if ( colormodel == d8 )
    	return !d.d8.invalid;
        else
    	return !d.d32.invalid();
    }

    inline bool TQColor::operator==( const TQColor &c ) const
    {
        return d.argb == c.d.argb && isValid() == c.isValid();
    }

    inline bool TQColor::operator!=( const TQColor &c ) const
    {
        return !operator==(c);
    }

    /*****************************************************************************
      TQColor stream functions
     *****************************************************************************/

    #ifndef QT_NO_DATASTREAM
    Q_EXPORT TQDataStream &operator<<( TQDataStream &, const TQColor & );
    Q_EXPORT TQDataStream &operator>>( TQDataStream &, TQColor & );
    #endif

    #endif // TQCOLOR_H