include/wx/fmappriv.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/fmappriv.h
   3 // Purpose:     private wxFontMapper stuff, not to be used by the library users
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     21.06.2003 (extracted from common/fontmap.cpp)
   7 // Copyright:   (c) 1999-2003 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_FMAPPRIV_H_
  12 #define _WX_FMAPPRIV_H_
  13
  14 // ----------------------------------------------------------------------------
  15 // constants
  16 // ----------------------------------------------------------------------------
  17
  18 // a special pseudo encoding which means "don't ask me about this charset
  19 // any more" -- we need it to avoid driving the user crazy with asking him
  20 // time after time about the same charset which he [presumably] doesn't
  21 // have the fonts for
  22 enum { wxFONTENCODING_UNKNOWN = -2 };
  23
  24 // the config paths we use
  25 #if wxUSE_CONFIG
  26
  27 #define FONTMAPPER_ROOT_PATH wxT("/wxWindows/FontMapper")
  28 #define FONTMAPPER_CHARSET_PATH wxT("Charsets")
  29 #define FONTMAPPER_CHARSET_ALIAS_PATH wxT("Aliases")
  30
  31 #endif // wxUSE_CONFIG
  32
  33 // ----------------------------------------------------------------------------
  34 // wxFontMapperPathChanger: change the config path during our lifetime
  35 // ----------------------------------------------------------------------------
  36
  37 #if wxUSE_CONFIG && wxUSE_FILECONFIG
  38
  39 class wxFontMapperPathChanger
  40 {
  41 public:
  42     wxFontMapperPathChanger(wxFontMapperBase *fontMapper, const wxString& path)
  43     {
  44         m_fontMapper = fontMapper;
  45         m_ok = m_fontMapper->ChangePath(path, &m_pathOld);
  46     }
  47
  48     bool IsOk() const { return m_ok; }
  49
  50     ~wxFontMapperPathChanger()
  51     {
  52         if ( IsOk() )
  53             m_fontMapper->RestorePath(m_pathOld);
  54     }
  55
  56 private:
  57     // the fontmapper object we're working with
  58     wxFontMapperBase *m_fontMapper;
  59
  60     // the old path to be restored if m_ok
  61     wxString m_pathOld;
  62
  63     // have we changed the path successfully?
  64     bool m_ok;
  65
  66
  67     wxDECLARE_NO_COPY_CLASS(wxFontMapperPathChanger);
  68 };
  69
  70 #endif // wxUSE_CONFIG
  71
  72 #endif // _WX_FMAPPRIV_H_
  73