include/wx/x11/colour.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        colour.h
   3 // Purpose:     wxColour class
   4 // Author:      Julian Smart, Robert Roebling
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart, Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_COLOUR_H_
  13 #define _WX_COLOUR_H_
  14
  15 #ifdef __GNUG__
  16 #pragma interface "colour.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20 #include "wx/object.h"
  21 #include "wx/string.h"
  22 #include "wx/gdiobj.h"
  23 #include "wx/palette.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // classes
  27 //-----------------------------------------------------------------------------
  28
  29 class wxDC;
  30 class wxPaintDC;
  31 class wxBitmap;
  32 class wxWindow;
  33
  34 class wxColour;
  35
  36 //-----------------------------------------------------------------------------
  37 // wxColour
  38 //-----------------------------------------------------------------------------
  39
  40 class wxColour: public wxGDIObject
  41 {
  42 public:
  43     wxColour() { }
  44
  45     // Construct from RGB
  46     wxColour( unsigned char red, unsigned char green, unsigned char blue );
  47     wxColour( unsigned long colRGB ) { Set(colRGB); }
  48
  49     // Implicit conversion from the colour name
  50     wxColour( const wxString &colourName ) { InitFromName(colourName); }
  51     wxColour( const char *colourName ) { InitFromName(colourName); }
  52
  53     wxColour( const wxColour& col ) { Ref(col); }
  54     wxColour& operator = ( const wxColour& col ) { Ref(col); return *this; }
  55
  56     ~wxColour();
  57
  58     bool Ok() const { return m_refData != NULL; }
  59
  60     bool operator == ( const wxColour& col ) const;
  61     bool operator != ( const wxColour& col ) const { return !(*this == col); }
  62
  63     void Set( unsigned char red, unsigned char green, unsigned char blue );
  64     void Set( unsigned long colRGB )
  65     {
  66         // We don't need to know sizeof(long) here because we assume that the three
  67         // least significant bytes contain the R, G and B values
  68         Set((unsigned char)colRGB,
  69             (unsigned char)(colRGB >> 8),
  70             (unsigned char)(colRGB >> 16));
  71     }
  72
  73     unsigned char Red() const;
  74     unsigned char Green() const;
  75     unsigned char Blue() const;
  76
  77     // Implementation part
  78
  79     void CalcPixel( WXColormap cmap );
  80     unsigned long GetPixel() const;
  81     WXColor *GetColor() const;
  82
  83 protected:
  84     // ref counting code
  85     virtual wxObjectRefData *CreateRefData() const;
  86     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
  87
  88     // Helper functions
  89     void InitFromName(const wxString& colourName);
  90
  91 private:
  92     DECLARE_DYNAMIC_CLASS(wxColour)
  93 };
  94
  95 #endif
  96
  97 // _WX_COLOUR_H_