include/wx/colour.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/colour.h
   3 // Purpose:     wxColourBase definition
   4 // Author:      Julian Smart
   5 // Modified by: Francesco Montorsi
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_COLOUR_H_BASE_
  13 #define _WX_COLOUR_H_BASE_
  14
  15 #include "wx/defs.h"
  16 #include "wx/gdiobj.h"
  17
  18
  19 // the standard wxColour constructors;
  20 // this macro avoids to repeat these lines across all colour.h files, since
  21 // Set() is a virtual function and thus cannot be called by wxColourBase
  22 // constructors
  23 #define DEFINE_STD_WXCOLOUR_CONSTRUCTORS                                                              \
  24     wxColour( unsigned char red, unsigned char green, unsigned char blue, unsigned char alpha = 255 ) \
  25         { Set(red, green, blue, alpha); }                                                             \
  26     wxColour( unsigned long colRGB ) { Set(colRGB); }                                                 \
  27     wxColour(const wxString &colourName) { Set(colourName); }                                         \
  28     wxColour(const wxChar *colourName) { Set(colourName); }
  29
  30
  31 // flags for wxColour -> wxString conversion (see wxColour::GetAsString)
  32 #define wxC2S_NAME              1   // return colour name, when possible
  33 #define wxC2S_CSS_SYNTAX        2   // return colour in rgb(r,g,b) syntax
  34 #define wxC2S_HTML_SYNTAX       4   // return colour in #rrggbb syntax
  35
  36
  37 class WXDLLEXPORT wxColour;
  38
  39 const unsigned char wxALPHA_TRANSPARENT = 0;
  40 const unsigned char wxALPHA_OPAQUE = 0xff;
  41
  42 //-----------------------------------------------------------------------------
  43 // wxColourBase: this class has no data members, just some functions to avoid
  44 //               code redundancy in all native wxColour implementations
  45 //-----------------------------------------------------------------------------
  46
  47 class WXDLLEXPORT wxColourBase : public wxGDIObject
  48 {
  49 protected:
  50
  51     virtual void InitWith(unsigned char red, unsigned char green, unsigned char blue) = 0;
  52
  53     // this will be overridden in alpha supporting classes
  54     virtual void InitWith(unsigned char red, unsigned char green, unsigned char blue, unsigned char WXUNUSED(alpha))
  55     {
  56         InitWith( red, green, blue ) ;
  57     }
  58
  59     virtual bool FromString(const wxChar *);
  60
  61 public:
  62     wxColourBase() {}
  63     virtual ~wxColourBase() {}
  64
  65
  66     // Set() functions
  67     // ---------------
  68
  69     void Set(unsigned char red, unsigned char green, unsigned char blue, unsigned char alpha = wxALPHA_OPAQUE)
  70         { InitWith(red,green,blue, alpha); }
  71
  72     // implemented in colourcmn.cpp
  73     bool Set(const wxChar *str)
  74         { return FromString(str); }
  75
  76     bool Set(const wxString &str)
  77         { return Set((const wxChar *)str); }
  78
  79     void Set(unsigned long colRGB)
  80     {
  81         // we don't need to know sizeof(long) here because we assume that the three
  82         // least significant bytes contain the R, G and B values
  83         Set((unsigned char)colRGB,
  84             (unsigned char)(colRGB >> 8),
  85             (unsigned char)(colRGB >> 16));
  86     }
  87
  88
  89
  90     // accessors
  91     // ---------
  92
  93     virtual bool Ok() const = 0;
  94
  95     virtual unsigned char Red() const = 0;
  96     virtual unsigned char Green() const = 0;
  97     virtual unsigned char Blue() const = 0;
  98     virtual unsigned char Alpha() const
  99         { return wxALPHA_OPAQUE ; }
 100
 101     // implemented in colourcmn.cpp
 102     virtual wxString GetAsString(long flags = wxC2S_NAME | wxC2S_CSS_SYNTAX) const;
 103
 104
 105
 106     // old, deprecated
 107     // ---------------
 108
 109 #if WXWIN_COMPATIBILITY_2_6
 110     wxDEPRECATED( static wxColour CreateByName(const wxString& name) );
 111     wxDEPRECATED( void InitFromName(const wxString& col) );
 112 #endif
 113 };
 114
 115
 116
 117 #if defined(__WXPALMOS__)
 118 #include "wx/generic/colour.h"
 119 #elif defined(__WXMSW__)
 120 #include "wx/msw/colour.h"
 121 #elif defined(__WXMOTIF__)
 122 #include "wx/motif/colour.h"
 123 #elif defined(__WXGTK20__)
 124 #include "wx/gtk/colour.h"
 125 #elif defined(__WXGTK__)
 126 #include "wx/gtk1/colour.h"
 127 #elif defined(__WXMGL__)
 128 #include "wx/generic/colour.h"
 129 #elif defined(__WXDFB__)
 130 #include "wx/generic/colour.h"
 131 #elif defined(__WXX11__)
 132 #include "wx/x11/colour.h"
 133 #elif defined(__WXMAC__)
 134 #include "wx/mac/colour.h"
 135 #elif defined(__WXCOCOA__)
 136 #include "wx/cocoa/colour.h"
 137 #elif defined(__WXPM__)
 138 #include "wx/os2/colour.h"
 139 #endif
 140
 141 #define wxColor wxColour
 142
 143 #endif
 144     // _WX_COLOUR_H_BASE_