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 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999-2003 Vadim Zeitlin <vadim@wxwindows.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_FMAPPRIV_H_
  13 #define _WX_FMAPPRIV_H_
  14
  15 // ----------------------------------------------------------------------------
  16 // constants
  17 // ----------------------------------------------------------------------------
  18
  19 // a special pseudo encoding which means "don't ask me about this charset
  20 // any more" -- we need it to avoid driving the user crazy with asking him
  21 // time after time about the same charset which he [presumably] doesn't
  22 // have the fonts for
  23 enum { wxFONTENCODING_UNKNOWN = -2 };
  24
  25 // the config paths we use
  26 #if wxUSE_CONFIG
  27
  28 #define FONTMAPPER_ROOT_PATH wxT("/wxWindows/FontMapper")
  29 #define FONTMAPPER_CHARSET_PATH wxT("Charsets")
  30 #define FONTMAPPER_CHARSET_ALIAS_PATH wxT("Aliases")
  31
  32 #endif // wxUSE_CONFIG
  33
  34 // ----------------------------------------------------------------------------
  35 // wxFontMapperPathChanger: change the config path during our lifetime
  36 // ----------------------------------------------------------------------------
  37
  38 #if wxUSE_CONFIG
  39
  40 class wxFontMapperPathChanger
  41 {
  42 public:
  43     wxFontMapperPathChanger(wxFontMapperBase *fontMapper, const wxString& path)
  44     {
  45         m_fontMapper = fontMapper;
  46         m_ok = m_fontMapper->ChangePath(path, &m_pathOld);
  47     }
  48
  49     bool IsOk() const { return m_ok; }
  50
  51     ~wxFontMapperPathChanger()
  52     {
  53         if ( IsOk() )
  54             m_fontMapper->RestorePath(m_pathOld);
  55     }
  56
  57 private:
  58     // the fontmapper object we're working with
  59     wxFontMapperBase *m_fontMapper;
  60
  61     // the old path to be restored if m_ok
  62     wxString m_pathOld;
  63
  64     // have we changed the path successfully?
  65     bool m_ok;
  66
  67
  68     DECLARE_NO_COPY_CLASS(wxFontMapperPathChanger)
  69 };
  70
  71 #endif // wxUSE_CONFIG
  72
  73 #endif // _WX_FMAPPRIV_H_
  74