src/common/colourcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/colourcmn.cpp
   3 // Purpose:     wxColourBase implementation
   4 // Author:      Francesco Montorsi
   5 // Modified by:
   6 // Created:     20/4/2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Francesco Montorsi
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12
  13 // For compilers that support precompilation, includes "wx.h".
  14 #include "wx/wxprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #include "wx/colour.h"
  21
  22 #ifndef WX_PRECOMP
  23     #include "wx/log.h"
  24 #endif
  25
  26 #include "wx/gdicmn.h"
  27
  28
  29 // ============================================================================
  30 // wxString <-> wxColour conversions
  31 // ============================================================================
  32
  33 bool wxColourBase::FromString(const wxChar *str)
  34 {
  35     if ( str == NULL || str[0] == wxT('\0'))
  36         return false;       // invalid or empty string
  37
  38     if ( wxStrncmp(str, wxT("RGB"), 3) == 0 ||
  39          wxStrncmp(str, wxT("rgb"), 3) == 0 )
  40     {
  41         // RGB specification CSS-like
  42         int red, green, blue;
  43         if (wxSscanf(&str[3], wxT("(%d, %d, %d)"), &red, &green, &blue) != 3)
  44             return false;
  45
  46         Set((unsigned char)red, (unsigned char)green, (unsigned char)blue);
  47     }
  48     else if ( str[0] == wxT('#') && wxStrlen(str) == 7 )
  49     {
  50         // hexadecimal prefixed with # (HTML syntax)
  51         unsigned long tmp;
  52         if (wxSscanf(&str[1], wxT("%lX"), &tmp) != 1)
  53             return false;
  54
  55         Set(tmp);   // set from packed long
  56     }
  57     else if (wxTheColourDatabase) // a colour name ?
  58     {
  59         // we can't do
  60         // *this = wxTheColourDatabase->Find(str)
  61         // because this place can be called from constructor
  62         // and 'this' could not be available yet
  63         wxColour clr = wxTheColourDatabase->Find(str);
  64         if (clr.Ok())
  65             Set((unsigned char)clr.Red(),
  66                 (unsigned char)clr.Green(),
  67                 (unsigned char)clr.Blue());
  68     }
  69
  70     if (Ok())
  71         return true;
  72
  73     wxLogDebug(wxT("wxColour::Set - couldn't set to colour string '%s'"), str);
  74     return false;
  75 }
  76
  77 wxString wxColourBase::GetAsString(long flags) const
  78 {
  79     wxString colName;
  80
  81     if (flags & wxC2S_NAME)
  82         colName = wxTheColourDatabase->FindName((const wxColour &)(*this)).MakeLower();
  83
  84     if ( colName.empty() && (flags & wxC2S_CSS_SYNTAX) )
  85     {
  86         // no name for this colour; return it in CSS syntax
  87         colName.Printf(wxT("rgb(%d, %d, %d)"),
  88                        Red(), Green(), Blue());
  89     }
  90     else if ( colName.empty() && (flags & wxC2S_HTML_SYNTAX) )
  91     {
  92         // no name for this colour; return it in HTML syntax
  93         colName.Printf(wxT("#%02X%02X%02X"),
  94                        Red(), Green(), Blue());
  95     }
  96
  97     // this function always returns a non-empty string
  98     wxASSERT_MSG(!colName.empty(),
  99                  wxT("Invalid wxColour -> wxString conversion flags"));
 100
 101     return colName;
 102 }
 103
 104 #if WXWIN_COMPATIBILITY_2_6
 105
 106 // static
 107 wxColour wxColourBase::CreateByName(const wxString& name)
 108 {
 109     return wxColour(name);
 110 }
 111
 112 void wxColourBase::InitFromName(const wxString& col)
 113 {
 114     Set(col);
 115 }
 116
 117 #endif // WXWIN_COMPATIBILITY_2_6