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
  23
  24 // ============================================================================
  25 // wxString <-> wxColour conversions
  26 // ============================================================================
  27
  28 bool wxColourBase::FromString(const wxChar *str)
  29 {
  30     if ( str == NULL || str[0] == wxT('\0'))
  31         return false;       // invalid or empty string
  32
  33     if ( wxStrncmp(str, wxT("RGB"), 3) == 0 ||
  34          wxStrncmp(str, wxT("rgb"), 3) == 0 )
  35     {
  36         // RGB specification CSS-like
  37         int red, green, blue;
  38         if (wxSscanf(&str[3], wxT("(%d, %d, %d)"), &red, &green, &blue) != 3)
  39             return false;
  40
  41         Set((unsigned char)red, (unsigned char)green, (unsigned char)blue);
  42     }
  43     else if ( str[0] == wxT('#') && wxStrlen(str) == 7 )
  44     {
  45         // hexadecimal prefixed with # (HTML syntax)
  46         unsigned long tmp;
  47         if (wxSscanf(&str[1], wxT("%lX"), &tmp) != 1)
  48             return false;
  49
  50         Set(tmp);   // set from packed long
  51     }
  52     else if (wxTheColourDatabase) // a colour name ?
  53     {
  54         // we can't do
  55         // *this = wxTheColourDatabase->Find(str)
  56         // because this place can be called from constructor
  57         // and 'this' could not be available yet
  58         wxColour clr = wxTheColourDatabase->Find(str);
  59         Set((unsigned char)clr.Red(), (unsigned char)clr.Green(), (unsigned char)clr.Blue());
  60     }
  61
  62     if (Ok())
  63         return true;
  64
  65     wxLogDebug(wxT("wxColour::Set - couldn't set to colour string '%s'"), str);
  66     return false;
  67 }
  68
  69 wxString wxColourBase::GetAsString(long flags) const
  70 {
  71     wxString colName;
  72
  73     if (flags & wxC2S_NAME)
  74         colName = wxTheColourDatabase->FindName((const wxColour &)(*this)).MakeLower();
  75
  76     if ( colName.empty() && (flags & wxC2S_CSS_SYNTAX) )
  77     {
  78         // no name for this colour; return it in CSS syntax
  79         colName.Printf(wxT("rgb(%d, %d, %d)"),
  80                        Red(), Green(), Blue());
  81     }
  82     else if ( colName.empty() && (flags & wxC2S_HTML_SYNTAX) )
  83     {
  84         // no name for this colour; return it in HTML syntax
  85         colName.Printf(wxT("#%02X%02X%02X"),
  86                        Red(), Green(), Blue());
  87     }
  88
  89     // this function always returns a non-empty string
  90     wxASSERT_MSG(!colName.empty(),
  91                  wxT("Invalid wxColour -> wxString conversion flags"));
  92
  93     return colName;
  94 }
  95
  96 wxColour wxColourBase::CreateByName(const wxString& name)
  97 {
  98     return wxColour(name);
  99 }