This is the verbatim text of the qcolor.h include file. It is is provided only for illustration; the copyright remains with Troll Tech.
/****************************************************************************
** $Id: qcolor.h,v 2.0 1996/09/24 10:15:48 agulbra Exp $
**
** Definition of QColor class
**
** Created : 940112
**
** Copyright (C) 1994-1996 by Troll Tech AS. All rights reserved.
**
*****************************************************************************/
#ifndef QCOLOR_H
#define QCOLOR_H
#include "qwindefs.h"
const QRgb RGB_DIRTY = 0x80000000; // flags unset color
const QRgb RGB_INVALID = 0x40000000; // flags invalid color
const QRgb RGB_DIRECT = 0x20000000; // flags directly set pixel
const QRgb RGB_MASK = 0x00ffffff; // masks RGB values
inline int qRed( QRgb rgb ) // get red part of RGB
{ return (int)(rgb & 0xff); }
inline int qGreen( QRgb rgb ) // get green part of RGB
{ return (int)((rgb >> 8) & 0xff); }
inline int qBlue( QRgb rgb ) // get blue part of RGB
{ return (int)((rgb >> 16) & 0xff); }
inline QRgb qRgb( int r, int g, int b ) // set RGB value
{ return (uchar)r | ((ushort)g << 8) | ((uint)b << 16); }
inline int qGray( int r, int g, int b ) // convert R,G,B to gray 0..255
{ return (r*11+g*16+b*5)/32; }
inline int qGray( QRgb rgb ) // convert RGB to gray 0..255
{ return qGray( qRed(rgb), qGreen(rgb), qBlue(rgb) ); }
class QColor // color class
{
public:
enum Spec { Rgb, Hsv };
QColor();
QColor( int r, int g, int b );
QColor( int x, int y, int z, Spec );
QColor( QRgb rgb, uint pixel=0xffffffff);
QColor( const char *name );
QColor( const QColor & );
QColor &operator=( const QColor & );
bool isValid() const;
bool isDirty() const;
void setNamedColor( const char *name );
void rgb( int *r, int *g, int *b ) const;
QRgb rgb() const;
void setRgb( int r, int g, int b );
void setRgb( QRgb rgb );
int red() const;
int green() const;
int blue() const;
void hsv( int *h, int *s, int *v ) const;
void setHsv( int h, int s, int v );
QColor light( int f = 112 ) const;
QColor dark( int f = 200 ) const;
bool operator==( const QColor &c ) const;
bool operator!=( const QColor &c ) const;
static bool lazyAlloc();
static void setLazyAlloc( bool );
uint alloc();
uint pixel() const;
static int maxColors();
static int numBitPlanes();
#if defined(_WS_WIN_)
static HANDLE hPal() { return hpal; }
static uint realizePal( QWidget * );
#endif
static void initialize();
static void cleanup();
private:
static void initglobals();
static bool ginit;
static bool lalloc;
#if defined(_WS_WIN_)
static HANDLE hpal;
#endif
uint pix;
QRgb rgbVal;
};
inline QColor::QColor()
{ rgbVal = RGB_INVALID; pix = 0; }
inline QColor::QColor( int r, int g, int b )
{ setRgb( r, g, b ); }
inline bool QColor::isValid() const
{ return (rgbVal & RGB_INVALID) == 0; }
inline bool QColor::isDirty() const
{ return (rgbVal & RGB_DIRTY) != 0; }
inline QRgb QColor::rgb() const
{ return rgbVal & RGB_MASK; }
inline int QColor::red() const
{ return qRed(rgbVal); }
inline int QColor::green() const
{ return qGreen(rgbVal); }
inline int QColor::blue() const
{ return qBlue(rgbVal); }
inline uint QColor::pixel() const
{ return (rgbVal & RGB_DIRTY) == 0 ? pix : ((QColor*)this)->alloc(); }
inline bool QColor::operator==( const QColor &c ) const
{
return ((rgbVal | c.rgbVal) & RGB_DIRECT) == 0 ?
rgbVal == c.rgbVal :
rgbVal == c.rgbVal && pix == c.pix;
}
inline bool QColor::operator!=( const QColor &c ) const
{
return ((rgbVal | c.rgbVal) & RGB_DIRECT) == 0 ?
rgbVal != c.rgbVal :
rgbVal != c.rgbVal || pix != c.pix;
}
inline bool QColor::lazyAlloc()
{ return lalloc; }
/*****************************************************************************
Global colors
*****************************************************************************/
extern const QColor color0;
extern const QColor color1;
extern const QColor black;
extern const QColor white;
extern const QColor darkGray;
extern const QColor gray;
extern const QColor lightGray;
extern const QColor red;
extern const QColor green;
extern const QColor blue;
extern const QColor cyan;
extern const QColor magenta;
extern const QColor yellow;
extern const QColor darkRed;
extern const QColor darkGreen;
extern const QColor darkBlue;
extern const QColor darkCyan;
extern const QColor darkMagenta;
extern const QColor darkYellow;
/*****************************************************************************
QColor stream functions
*****************************************************************************/
QDataStream &operator<<( QDataStream &, const QColor & );
QDataStream &operator>>( QDataStream &, QColor & );
#endif // QCOLOR_H