workspace/ksplash/ksplashx/qcolor.h

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  10 **
  11 ** The original Qt license header follows:
  12 **
  13 **
  14 ** Definition of QColor class
  15 **
  16 ** Created : 940112
  17 **
  18 ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
  19 **
  20 ** This file is part of the kernel module of the Qt GUI Toolkit.
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  47
  48 #ifndef QCOLOR_H
  49 #define QCOLOR_H
  50
  51 #ifndef QT_H
  52 #include "qwindowdefs.h"
  53 //##include "qstringlist.h"
  54 #endif // QT_H
  55
  56 const QRgb  RGB_MASK    = 0x00ffffff;           // masks RGB values
  57
  58 Q_EXPORT inline int qRed( QRgb rgb )            // get red part of RGB
  59 { return (int)((rgb >> 16) & 0xff); }
  60
  61 Q_EXPORT inline int qGreen( QRgb rgb )          // get green part of RGB
  62 { return (int)((rgb >> 8) & 0xff); }
  63
  64 Q_EXPORT inline int qBlue( QRgb rgb )           // get blue part of RGB
  65 { return (int)(rgb & 0xff); }
  66
  67 Q_EXPORT inline int qAlpha( QRgb rgb )          // get alpha part of RGBA
  68 { return (int)((rgb >> 24) & 0xff); }
  69
  70 Q_EXPORT inline QRgb qRgb( int r, int g, int b )// set RGB value
  71 { return (0xff << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }
  72
  73 Q_EXPORT inline QRgb qRgba( int r, int g, int b, int a )// set RGBA value
  74 { return ((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }
  75
  76 Q_EXPORT inline int qGray( int r, int g, int b )// convert R,G,B to gray 0..255
  77 { return (r*11+g*16+b*5)/32; }
  78
  79 Q_EXPORT inline int qGray( QRgb rgb )           // convert RGB to gray 0..255
  80 { return qGray( qRed(rgb), qGreen(rgb), qBlue(rgb) ); }
  81
  82
  83 class Q_EXPORT QColor
  84 {
  85 public:
  86     enum Spec { Rgb, Hsv };
  87
  88     QColor();
  89     QColor( int r, int g, int b );
  90     QColor( int x, int y, int z, Spec );
  91     explicit QColor( QRgb rgb, uint pixel=0xffffffff);
  92 #if 0
  93     QColor( const QString& name );
  94 #endif
  95     explicit QColor( const char *name );
  96     QColor( const QColor & );
  97     QColor &operator=( const QColor & );
  98
  99     bool   isValid() const;
 100     bool   isDirty() const;
 101 #if 0
 102     QString name() const;
 103     void   setNamedColor( const QString& name );
 104 #else
 105     void   setNamedColor( const char* name );
 106 #endif
 107
 108     QRgb   rgb()    const;
 109     void   setRgb( int r, int g, int b );
 110     void   setRgb( QRgb rgb );
 111     void   getRgb( int *r, int *g, int *b ) const { rgb( r, g, b ); }
 112     void   rgb( int *r, int *g, int *b ) const; // obsolete
 113
 114     int    red()    const;
 115     int    green()  const;
 116     int    blue()   const;
 117
 118     void   setHsv( int h, int s, int v );
 119     void   getHsv( int *h, int *s, int *v ) const { hsv( h, s, v ); }
 120     void   hsv( int *h, int *s, int *v ) const; // obsolete
 121     void   getHsv( int &h, int &s, int &v ) const { hsv( &h, &s, &v ); } // obsolete
 122
 123     QColor light( int f = 150 ) const;
 124     QColor dark( int f = 200 )  const;
 125
 126     bool   operator==( const QColor &c ) const;
 127     bool   operator!=( const QColor &c ) const;
 128
 129     uint   alloc();
 130     uint   pixel()  const;
 131
 132 #if defined(Q_WS_X11)
 133     // ### in 4.0, make this take a default argument of -1 for default screen?
 134     uint alloc( int screen );
 135     uint pixel( int screen ) const;
 136 #endif
 137
 138     static int  maxColors();
 139     static int  numBitPlanes();
 140
 141     static int  enterAllocContext();
 142     static void leaveAllocContext();
 143     static int  currentAllocContext();
 144     static void destroyAllocContext( int );
 145
 146 #if defined(Q_WS_WIN)
 147     static const QRgb* palette( int* numEntries = 0 );
 148     static int setPaletteEntries( const QRgb* entries, int numEntries,
 149                                   int base = -1 );
 150     static HPALETTE hPal()  { return hpal; }
 151     static uint realizePal( QWidget * );
 152 #endif
 153
 154     static void initialize();
 155     static void cleanup();
 156 #ifndef QT_NO_STRINGLIST
 157     static QStringList colorNames();
 158 #endif
 159     enum { Dirt = 0x44495254, Invalid = 0x49000000 };
 160
 161 private:
 162 #if 0
 163     void setSystemNamedColor( const QString& name );
 164 #else
 165     void setSystemNamedColor( const char* name );
 166 #endif
 167     void setPixel( uint pixel );
 168     static void initGlobalColors();
 169     static uint argbToPix32(QRgb);
 170     static QColor* globalColors();
 171     static bool color_init;
 172     static bool globals_init;
 173 #if defined(Q_WS_WIN)
 174     static HPALETTE hpal;
 175 #endif
 176     static enum ColorModel { d8, d32 } colormodel;
 177     union {
 178         QRgb argb;
 179         struct D8 {
 180             QRgb argb;
 181             uchar pix;
 182             uchar invalid;
 183             uchar dirty;
 184             uchar direct;
 185         } d8;
 186         struct D32 {
 187             QRgb argb;
 188             uint pix;
 189             bool invalid() const { return argb == QColor::Invalid && pix == QColor::Dirt; }
 190             bool probablyDirty() const { return pix == QColor::Dirt; }
 191         } d32;
 192     } d;
 193 };
 194
 195
 196 inline QColor::QColor()
 197 { d.d32.argb = Invalid; d.d32.pix = Dirt; }
 198
 199 inline QColor::QColor( int r, int g, int b )
 200 {
 201     d.d32.argb = Invalid;
 202     d.d32.pix = Dirt;
 203     setRgb( r, g, b );
 204 }
 205
 206 inline QRgb QColor::rgb() const
 207 { return d.argb; }
 208
 209 inline int QColor::red() const
 210 { return qRed(d.argb); }
 211
 212 inline int QColor::green() const
 213 { return qGreen(d.argb); }
 214
 215 inline int QColor::blue() const
 216 { return qBlue(d.argb); }
 217
 218 inline bool QColor::isValid() const
 219 {
 220     if ( colormodel == d8 )
 221         return !d.d8.invalid;
 222     else
 223         return !d.d32.invalid();
 224 }
 225
 226 inline bool QColor::operator==( const QColor &c ) const
 227 {
 228     return d.argb == c.d.argb && isValid() == c.isValid();
 229 }
 230
 231 inline bool QColor::operator!=( const QColor &c ) const
 232 {
 233     return !operator==(c);
 234 }
 235
 236
 237 /*****************************************************************************
 238   QColor stream functions
 239  *****************************************************************************/
 240
 241 #ifndef QT_NO_DATASTREAM
 242 Q_EXPORT QDataStream &operator<<( QDataStream &, const QColor & );
 243 Q_EXPORT QDataStream &operator>>( QDataStream &, QColor & );
 244 #endif
 245
 246 #endif // QCOLOR_H