fix warnings about empty controlling statement in release build

[wxWidgets.git] / src / common / fontmap.cpp

diff --git a/src/common/fontmap.cpp b/src/common/fontmap.cpp
index 1c9f225748c4c96f6c59c7bfd2e85069fe690ac7..0dee4cb1f1479b75ae4a14c5ae91df0045fc80fc 100644 (file)
--- a/src/common/fontmap.cpp
+++ b/src/common/fontmap.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        common/fontmap.cpp
+// Name:        src/common/fontmap.cpp

 // Purpose:     wxFontMapper class
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     04.11.99
 // RCS-ID:      $Id$
 // Purpose:     wxFontMapper class
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     04.11.99
 // RCS-ID:      $Id$

-// Copyright:   (c) Vadim Zeitlin
-// Licence:     wxWindows license
+// Copyright:   (c) 1999-2003 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
-    #pragma implementation "fontmap.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -28,153 +24,123 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

+#if wxUSE_FONTMAP
+
+#include "wx/fontmap.h"
+

 #ifndef WX_PRECOMP
     #include "wx/app.h"
     #include "wx/log.h"
     #include "wx/intl.h"
 #ifndef WX_PRECOMP
     #include "wx/app.h"
     #include "wx/log.h"
     #include "wx/intl.h"

+    #include "wx/msgdlg.h"
+    #include "wx/choicdlg.h"

 #endif // PCH
 
 #endif // PCH
 

-#include "wx/fontmap.h"
-#include "wx/config.h"
+#if wxUSE_CONFIG
+    #include "wx/config.h"
+#endif // wxUSE_CONFIG

 
 

-#include "wx/msgdlg.h"
+#if defined(__WXMSW__)
+  #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
+  #include  "wx/msw/winundef.h"
+#endif
+
+#include "wx/fmappriv.h"
+#include "wx/fontutil.h"

 #include "wx/fontdlg.h"
 #include "wx/fontdlg.h"

-#include "wx/choicdlg.h"
+#include "wx/encinfo.h"
+

 #include "wx/encconv.h"
 
 #include "wx/encconv.h"
 

+#if wxUSE_EXTENDED_RTTI
+
+wxBEGIN_ENUM( wxFontEncoding )
+    wxENUM_MEMBER( wxFONTENCODING_SYSTEM )
+    wxENUM_MEMBER( wxFONTENCODING_DEFAULT )
+
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_1 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_2 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_3 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_4 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_5 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_6 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_7 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_8 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_9 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_10 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_11 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_12 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_13 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_14 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_15 )
+    wxENUM_MEMBER( wxFONTENCODING_ISO8859_MAX )
+    wxENUM_MEMBER( wxFONTENCODING_KOI8 )
+    wxENUM_MEMBER( wxFONTENCODING_KOI8_U )
+    wxENUM_MEMBER( wxFONTENCODING_ALTERNATIVE )
+    wxENUM_MEMBER( wxFONTENCODING_BULGARIAN )
+    wxENUM_MEMBER( wxFONTENCODING_CP437 )
+    wxENUM_MEMBER( wxFONTENCODING_CP850 )
+    wxENUM_MEMBER( wxFONTENCODING_CP852 )
+    wxENUM_MEMBER( wxFONTENCODING_CP855 )
+    wxENUM_MEMBER( wxFONTENCODING_CP866 )
+
+    wxENUM_MEMBER( wxFONTENCODING_CP874 )
+    wxENUM_MEMBER( wxFONTENCODING_CP932 )
+    wxENUM_MEMBER( wxFONTENCODING_CP936 )
+    wxENUM_MEMBER( wxFONTENCODING_CP949 )
+    wxENUM_MEMBER( wxFONTENCODING_CP950 )
+    wxENUM_MEMBER( wxFONTENCODING_CP1250 )
+    wxENUM_MEMBER( wxFONTENCODING_CP1251 )
+    wxENUM_MEMBER( wxFONTENCODING_CP1252 )
+    wxENUM_MEMBER( wxFONTENCODING_CP1253 )
+    wxENUM_MEMBER( wxFONTENCODING_CP1254 )
+    wxENUM_MEMBER( wxFONTENCODING_CP1255 )
+    wxENUM_MEMBER( wxFONTENCODING_CP1256 )
+    wxENUM_MEMBER( wxFONTENCODING_CP1257 )
+    wxENUM_MEMBER( wxFONTENCODING_CP12_MAX )
+    wxENUM_MEMBER( wxFONTENCODING_UTF7 )
+    wxENUM_MEMBER( wxFONTENCODING_UTF8 )
+    wxENUM_MEMBER( wxFONTENCODING_GB2312 )
+    wxENUM_MEMBER( wxFONTENCODING_BIG5 )
+    wxENUM_MEMBER( wxFONTENCODING_SHIFT_JIS )
+    wxENUM_MEMBER( wxFONTENCODING_EUC_JP )
+    wxENUM_MEMBER( wxFONTENCODING_UNICODE )
+wxEND_ENUM( wxFontEncoding )
+#endif
+

 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 
 // the config paths we use
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 
 // the config paths we use

-static const wxChar* FONTMAPPER_ROOT_PATH = wxT("wxWindows/FontMapper");
-static const wxChar* FONTMAPPER_CHARSET_PATH = wxT("Charsets");
-static const wxChar* FONTMAPPER_CHARSET_ALIAS_PATH = wxT("Aliases");
-static const wxChar* FONTMAPPER_FONT_FROM_ENCODING_PATH = wxT("Encodings");
-
-// encodings supported by GetEncodingDescription
-static wxFontEncoding gs_encodings[] =
-{
-    wxFONTENCODING_ISO8859_1,
-    wxFONTENCODING_ISO8859_2,
-    wxFONTENCODING_ISO8859_3,
-    wxFONTENCODING_ISO8859_4,
-    wxFONTENCODING_ISO8859_5,
-    wxFONTENCODING_ISO8859_6,
-    wxFONTENCODING_ISO8859_7,
-    wxFONTENCODING_ISO8859_8,
-    wxFONTENCODING_ISO8859_9,
-    wxFONTENCODING_ISO8859_10,
-    wxFONTENCODING_ISO8859_11,
-    wxFONTENCODING_ISO8859_12,
-    wxFONTENCODING_ISO8859_13,
-    wxFONTENCODING_ISO8859_14,
-    wxFONTENCODING_ISO8859_15,
-    wxFONTENCODING_KOI8,
-    wxFONTENCODING_CP1250,
-    wxFONTENCODING_CP1251,
-    wxFONTENCODING_CP1252,
-    wxFONTENCODING_CP1253,
-    wxFONTENCODING_CP1254,
-    wxFONTENCODING_CP1255,
-    wxFONTENCODING_CP1256,
-    wxFONTENCODING_CP1257,
-};
-
-// the descriptions for them
-static const wxChar* gs_encodingDescs[] =
-{
-    wxTRANSLATE( "West European (ISO-8859-1/Latin 1)" ),
-    wxTRANSLATE( "Central European (ISO-8859-2/Latin 2)" ),
-    wxTRANSLATE( "Esperanto (ISO-8859-3)" ),
-    wxTRANSLATE( "Baltic (ISO-8859-4)" ),
-    wxTRANSLATE( "Cyrillic (Latin 5)" ),
-    wxTRANSLATE( "Arabic (ISO-8859-6)" ),
-    wxTRANSLATE( "Greek (ISO-8859-7)" ),
-    wxTRANSLATE( "Hebrew (ISO-8859-8)" ),
-    wxTRANSLATE( "Turkish (ISO-8859-9)" ),
-    wxTRANSLATE( "Baltic II (ISO-8859-10)" ),
-    wxTRANSLATE( "Thai (ISO-8859-11)" ),
-    wxTRANSLATE( "ISO-8859-12" ),
-    wxTRANSLATE( "ISO-8859-13" ),
-    wxTRANSLATE( "ISO-8859-14" ),
-    wxTRANSLATE( "West European new (ISO-8859-15/Latin 0)" ),
-    wxTRANSLATE( "KOI8-R" ),
-    wxTRANSLATE( "Windows Latin 2 (CP 1250)" ),
-    wxTRANSLATE( "Windows Cyrillic (CP 1251)" ),
-    wxTRANSLATE( "Windows Latin 1 (CP 1252)" ),
-    wxTRANSLATE( "Windows Greek (CP 1253)" ),
-    wxTRANSLATE( "Windows Turkish (CP 1254)" ),
-    wxTRANSLATE( "Windows Hebrew (CP 1255)" ),
-    wxTRANSLATE( "Windows Arabic (CP 1256)" ),
-    wxTRANSLATE( "Windows Baltic (CP 1257)" ),
-};
-
-// and the internal names
-static const wxChar* gs_encodingNames[] =
-{
-    wxT( "iso8859-1" ),
-    wxT( "iso8859-2" ),
-    wxT( "iso8859-3" ),
-    wxT( "iso8859-4" ),
-    wxT( "iso8859-5" ),
-    wxT( "iso8859-6" ),
-    wxT( "iso8859-7" ),
-    wxT( "iso8859-8" ),
-    wxT( "iso8859-9" ),
-    wxT( "iso8859-10" ),
-    wxT( "iso8859-11" ),
-    wxT( "iso8859-12" ),
-    wxT( "iso8859-13" ),
-    wxT( "iso8859-14" ),
-    wxT( "iso8859-15" ),
-    wxT( "koi8-r" ),
-    wxT( "windows1250" ),
-    wxT( "windows1251" ),
-    wxT( "windows1252" ),
-    wxT( "windows1253" ),
-    wxT( "windows1254" ),
-    wxT( "windows1255" ),
-    wxT( "windows1256" ),
-    wxT( "windows1257" ),
-};
-
-// ----------------------------------------------------------------------------
-// global data
-// ----------------------------------------------------------------------------
+#if wxUSE_CONFIG

 
 

-// private object
-static wxFontMapper gs_fontMapper;
+static const wxChar* FONTMAPPER_FONT_FROM_ENCODING_PATH = wxT("Encodings");
+static const wxChar* FONTMAPPER_FONT_DONT_ASK = wxT("none");

 
 

-// and public pointer
-wxFontMapper * wxTheFontMapper = &gs_fontMapper;
+#endif // wxUSE_CONFIG

 
 // ----------------------------------------------------------------------------
 // private classes
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // private classes
 // ----------------------------------------------------------------------------
 

-// change the config path during the lifetime of this object
-class wxFontMapperPathChanger
+// it may happen that while we're showing a dialog asking the user about
+// something, another request for an encoding mapping arrives: in this case it
+// is best to not do anything because otherwise we risk to enter an infinite
+// loop so we create an object of this class on stack to test for this in all
+// interactive functions
+class ReentrancyBlocker

 {
 public:
 {
 public:

-    wxFontMapperPathChanger(wxFontMapper *fontMapper, const wxString& path)
-    {
-        m_fontMapper = fontMapper;
-        m_ok = m_fontMapper->ChangePath(path, &m_pathOld);
-    }
-
-    bool IsOk() const { return m_ok; }
-
-    ~wxFontMapperPathChanger()
-    {
-        if ( IsOk() )
-            m_fontMapper->RestorePath(m_pathOld);
-    }
+    ReentrancyBlocker(bool& flag) : m_flagOld(flag), m_flag(flag)
+        { m_flag = true; }
+    ~ReentrancyBlocker() { m_flag = m_flagOld; }

 
 private:
 
 private:

-    wxFontMapper *m_fontMapper;
-    bool          m_ok;
-    wxString      m_pathOld;
+    bool m_flagOld;
+    bool& m_flag;
+
+    wxDECLARE_NO_COPY_CLASS(ReentrancyBlocker);

 };
 
 // ============================================================================
 };
 
 // ============================================================================


@@ -187,7 +153,6 @@ private:
 
 wxFontMapper::wxFontMapper()
 {
 
 wxFontMapper::wxFontMapper()
 {

-    m_config = NULL;

     m_windowParent = NULL;
 }
 
     m_windowParent = NULL;
 }
 


@@ -195,253 +160,54 @@ wxFontMapper::~wxFontMapper()
 {
 }
 
 {
 }
 

-// ----------------------------------------------------------------------------
-// customisation
-// ----------------------------------------------------------------------------
-
-/* static */ const wxChar *wxFontMapper::GetDefaultConfigPath()
-{
-    return FONTMAPPER_ROOT_PATH;
-}
-
-void wxFontMapper::SetConfigPath(const wxString& prefix)
-{
-    wxCHECK_RET( !prefix.IsEmpty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
-                 wxT("an absolute path should be given to "
-                     "wxFontMapper::SetConfigPath()") );
-
-    m_configRootPath = prefix;
-}
-
-
-// ----------------------------------------------------------------------------
-// get config object and path for it
-// ----------------------------------------------------------------------------
-
-wxConfigBase *wxFontMapper::GetConfig()
-{
-    if ( !m_config )
-    {
-        // try the default
-        m_config = wxConfig::Get(FALSE/*don't create on demand*/);
-    }
-
-    return m_config;
-}
-
-const wxString& wxFontMapper::GetConfigPath()
-{
-    if ( !m_configRootPath )
-    {
-        // use the default
-        m_configRootPath = GetDefaultConfigPath();
-    }
-
-    return m_configRootPath;
-}
-
-bool wxFontMapper::ChangePath(const wxString& pathNew, wxString *pathOld)
-{
-    wxConfigBase *config = GetConfig();
-    if ( !config )
-        return FALSE;
-
-    *pathOld = config->GetPath();
-
-    wxString path = GetConfigPath();
-    if ( path.IsEmpty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
-    {
-        path += wxCONFIG_PATH_SEPARATOR;
-    }
-
-    wxASSERT_MSG( !pathNew || (pathNew[0] != wxCONFIG_PATH_SEPARATOR),
-                  wxT("should be a relative path") );
-
-    path += pathNew;
-
-    config->SetPath(path);
-
-    return TRUE;
-}
-
-void wxFontMapper::RestorePath(const wxString& pathOld)
-{
-    GetConfig()->SetPath(pathOld);
-}
-
-// ----------------------------------------------------------------------------
-// charset/encoding correspondence
-// ----------------------------------------------------------------------------
-

 /* static */
 /* static */

-wxString wxFontMapper::GetEncodingDescription(wxFontEncoding encoding)
+wxFontMapper *wxFontMapper::Get()

 {
 {

-    size_t count = WXSIZEOF(gs_encodingDescs);
-
-    wxASSERT_MSG( count == WXSIZEOF(gs_encodings),
-                  wxT("inconsitency detected - forgot to update one of "
-                     "the arrays?") );
-
-    for ( size_t i = 0; i < count; i++ )
-    {
-        if ( gs_encodings[i] == encoding )
-        {
-            return wxGetTranslation(gs_encodingDescs[i]);
-        }
-    }
-
-    wxString str;
-    str.Printf(_("Unknown encoding (%d)"), encoding);
-
-    return str;
-}
-
-/* static */
-wxString wxFontMapper::GetEncodingName(wxFontEncoding encoding)
-{
-    size_t count = WXSIZEOF(gs_encodingNames);
-
-    wxASSERT_MSG( count == WXSIZEOF(gs_encodings),
-                  wxT("inconsitency detected - forgot to update one of "
-                     "the arrays?") );
-
-    for ( size_t i = 0; i < count; i++ )
-    {
-        if ( gs_encodings[i] == encoding )
-        {
-            return wxGetTranslation(gs_encodingNames[i]);
-        }
-    }
-
-    wxString str;
-    str.Printf(_("unknown-%d"), encoding);
-
-    return str;
+    wxFontMapperBase *fontmapper = wxFontMapperBase::Get();
+    wxASSERT_MSG( !fontmapper->IsDummy(),
+                 wxT("GUI code requested a wxFontMapper but we only have a wxFontMapperBase.") );
+
+    // Now return it anyway because there's a chance the GUI code might just
+    // only want to call wxFontMapperBase functions and it's better than
+    // crashing by returning NULL
+    return (wxFontMapper *)fontmapper;

 }
 
 }
 

-wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset,
-                                               bool interactive)
+wxFontEncoding
+wxFontMapper::CharsetToEncoding(const wxString& charset, bool interactive)

 {
 {

-    wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
-
-    // we're going to modify it, make a copy
-    wxString cs = charset;
+    // try the ways not needing the users intervention first
+    int encoding = wxFontMapperBase::NonInteractiveCharsetToEncoding(charset);

 
 

-    // first try the user-defined settings
-    wxString pathOld;
-    if ( ChangePath(FONTMAPPER_CHARSET_PATH, &pathOld) )
+    // if we failed to find the encoding, ask the user -- unless disabled
+    if ( encoding == wxFONTENCODING_UNKNOWN )

     {
     {

-        wxConfigBase *config = GetConfig();
-
-        // do we have an encoding for this charset?
-        long value = config->Read(charset, -1l);
-        if ( value != -1 )
-        {
-            if ( value >= 0 && value <= wxFONTENCODING_MAX )
-            {
-                encoding = (wxFontEncoding)value;
-            }
-            else
-            {
-                wxLogDebug(wxT("corrupted config data - invalid encoding %ld "
-                              "for charset '%s'"), value, charset.c_str());
-            }
-        }
-
-        if ( encoding == wxFONTENCODING_SYSTEM )
-        {
-            // may be we have an alias?
-            config->SetPath(FONTMAPPER_CHARSET_ALIAS_PATH);
-
-            wxString alias = config->Read(charset);
-            if ( !!alias )
-            {
-                // yes, we do - use it instead
-                cs = alias;
-            }
-        }
-
-        RestorePath(pathOld);
+        // this is the special value which disables asking the user (he had
+        // chosen to suppress this the last time)
+        encoding = wxFONTENCODING_SYSTEM;

     }
     }

-
-    // if didn't find it there, try to reckognise it ourselves
-    if ( encoding == wxFONTENCODING_SYSTEM )
-    {
-        cs.MakeUpper();
-
-        if ( !cs || cs == wxT("US-ASCII") )
-            encoding = wxFONTENCODING_DEFAULT;
-        else if ( cs == wxT("KOI8-R") || cs == wxT("KOI8-U") )
-            encoding = wxFONTENCODING_KOI8;
-        else if ( cs.Left(3) == wxT("ISO") )
-        {
-            // the dash is optional (or, to be exact, it is not, but
-            // several brokenmails "forget" it)
-            const wxChar *p = cs.c_str() + 3;
-            if ( *p == wxT('-') )
-                p++;
-
-            unsigned int value;
-            if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 )
-            {
-                if ( value < wxFONTENCODING_ISO8859_MAX -
-                             wxFONTENCODING_ISO8859_1 )
-                {
-                    // it's a valid ISO8859 encoding
-                    value += wxFONTENCODING_ISO8859_1 - 1;
-                    encoding = (wxFontEncoding)value;
-                }
-            }
-        }
-        else if ( cs.Left(8) == wxT("WINDOWS-") )
-        {
-            int value;
-            if ( wxSscanf(cs.c_str() + 8, wxT("%u"), &value) == 1 )
-            {
-                if ( value >= 1250 )
-                {
-                    value -= 1250;
-                    if ( value < wxFONTENCODING_CP12_MAX -
-                                 wxFONTENCODING_CP1250 - 1 )
-                    {
-                        // a valid Windows code page
-                        value += wxFONTENCODING_CP1250;
-                        encoding = (wxFontEncoding)value;
-                    }
-                }
-            }
-        }
-        //else: unknown
-    }
-
-    // if still no luck, ask the user - unless disabled
-    if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )
+#if wxUSE_CHOICEDLG
+    else if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )

     {
         // prepare the dialog data
 
         // the dialog title
         wxString title(m_titleDialog);
         if ( !title )
     {
         // prepare the dialog data
 
         // the dialog title
         wxString title(m_titleDialog);
         if ( !title )

-            title << wxTheApp->GetAppName() << _(": unknown charset");
+            title << wxTheApp->GetAppDisplayName() << _(": unknown charset");

 
         // the message
         wxString msg;
 
         // the message
         wxString msg;

-        msg.Printf(_("The charset '%s' is unknown. You may select another "
-                     "charset to replace it with or choose [Cancel] if it "
-                     "cannot be replaced"), charset.c_str());
+        msg.Printf(_("The charset '%s' is unknown. You may select\nanother charset to replace it with or choose\n[Cancel] if it cannot be replaced"), charset);

 
         // the list of choices
 
         // the list of choices

-        size_t count = WXSIZEOF(gs_encodingDescs);
-
-        wxASSERT_MSG( count == WXSIZEOF(gs_encodings),
-                      wxT("inconsitency detected - forgot to update one of "
-                         "the arrays?") );
+        const size_t count = GetSupportedEncodingsCount();

 
         wxString *encodingNamesTranslated = new wxString[count];
 
         for ( size_t i = 0; i < count; i++ )
         {
 
         wxString *encodingNamesTranslated = new wxString[count];
 
         for ( size_t i = 0; i < count; i++ )
         {

-            encodingNamesTranslated[i] = wxGetTranslation(gs_encodingDescs[i]);
+            encodingNamesTranslated[i] = GetEncodingDescription(GetEncoding(i));

         }
 
         // the parent window
         }
 
         // the parent window


@@ -459,14 +225,31 @@ wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset,
 
         if ( n != -1 )
         {
 
         if ( n != -1 )
         {

-            // TODO save the result in the config!
+            encoding = GetEncoding(n);
+        }
+
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+        // save the result in the config now
+        wxFontMapperPathChanger path(this, FONTMAPPER_CHARSET_PATH);
+        if ( path.IsOk() )
+        {
+            wxConfigBase *config = GetConfig();

 
 

-            encoding = gs_encodings[n];
+            // remember the alt encoding for this charset -- or remember that
+            // we don't know it
+            long value = n == -1 ? (long)wxFONTENCODING_UNKNOWN : (long)encoding;
+            if ( !config->Write(charset, value) )
+            {
+                wxLogError(_("Failed to remember the encoding for the charset '%s'."), charset);
+            }

         }
         }

-        //else: cancelled
+#endif // wxUSE_CONFIG

     }
     }

+#else
+    wxUnusedVar(interactive);
+#endif // wxUSE_CHOICEDLG

 
 

-    return encoding;
+    return (wxFontEncoding)encoding;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -482,6 +265,7 @@ bool wxFontMapper::TestAltEncoding(const wxString& configEntry,
     if ( wxGetNativeFontEncoding(encReplacement, info) &&
          wxTestFontEncoding(*info) )
     {
     if ( wxGetNativeFontEncoding(encReplacement, info) &&
          wxTestFontEncoding(*info) )
     {

+#if wxUSE_CONFIG && wxUSE_FILECONFIG

         // remember the mapping in the config
         wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
 
         // remember the mapping in the config
         wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
 


@@ -489,11 +273,13 @@ bool wxFontMapper::TestAltEncoding(const wxString& configEntry,
         {
             GetConfig()->Write(configEntry, info->ToString());
         }
         {
             GetConfig()->Write(configEntry, info->ToString());
         }

-
-        return TRUE;
+#else
+        wxUnusedVar(configEntry);
+#endif // wxUSE_CONFIG
+        return true;

     }
 
     }
 

-    return FALSE;
+    return false;

 }
 
 bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
 }
 
 bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,


@@ -501,7 +287,25 @@ bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
                                      const wxString& facename,
                                      bool interactive)
 {
                                      const wxString& facename,
                                      bool interactive)
 {

-    wxCHECK_MSG( info, FALSE, wxT("bad pointer in GetAltForEncoding") );
+#if wxUSE_GUI
+    // we need a flag to prevent infinite recursion which happens, for
+    // example, when GetAltForEncoding() is called from an OnPaint() handler:
+    // in this case, wxYield() which is called from wxMessageBox() we use here
+    // will lead to another call of OnPaint() and hence to another call of
+    // GetAltForEncoding() -- and it is impossible to catch this from the user
+    // code because we are called from wxFont ctor implicitly.
+
+    // assume we're always called from the main thread, so that it is safe to
+    // use a static var
+    static bool s_inGetAltForEncoding = false;
+
+    if ( interactive && s_inGetAltForEncoding )
+        return false;
+
+    ReentrancyBlocker blocker(s_inGetAltForEncoding);
+#endif // wxUSE_GUI
+
+    wxCHECK_MSG( info, false, wxT("bad pointer in GetAltForEncoding") );

 
     info->facename = facename;
 
 
     info->facename = facename;
 


@@ -511,133 +315,206 @@ bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
     }
 
     // if we failed to load the system default encoding, something is really
     }
 
     // if we failed to load the system default encoding, something is really

-    // wrong and we'd better stop now - otherwise we will go into endless
+    // wrong and we'd better stop now -- otherwise we will go into endless

     // recursion trying to create the font in the msg box with the error
     // message
     if ( encoding == wxFONTENCODING_SYSTEM )
     {
     // recursion trying to create the font in the msg box with the error
     // message
     if ( encoding == wxFONTENCODING_SYSTEM )
     {

-        wxFatalError(_("can't load any font, aborting"));
+        wxLogFatalError(_("can't load any font, aborting"));

 
 

-        // wxFatalError doesn't return
+        // wxLogFatalError doesn't return

     }
 
     }
 

-    wxString configEntry = facename + _T("_") + GetEncodingName(encoding);
+    wxString configEntry,
+             encName = GetEncodingName(encoding);
+    if ( !facename.empty() )
+    {
+        configEntry = facename + _T("_");
+    }
+    configEntry += encName;

 
 

+#if wxUSE_CONFIG && wxUSE_FILECONFIG

     // do we have a font spec for this encoding?
     // do we have a font spec for this encoding?

-    wxString pathOld;
-    if ( ChangePath(FONTMAPPER_FONT_FROM_ENCODING_PATH, &pathOld) )
+    wxString fontinfo;
+    wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
+    if ( path.IsOk() )

     {
     {

-        wxConfigBase *config = GetConfig();
-
-        wxString fontinfo = config->Read(configEntry);
+        fontinfo = GetConfig()->Read(configEntry);
+    }

 
 

-        RestorePath(pathOld);
+    // this special value means that we don't know of fonts for this
+    // encoding but, moreover, have already asked the user as well and he
+    // didn't specify any font neither
+    if ( fontinfo == FONTMAPPER_FONT_DONT_ASK )
+    {
+        interactive = false;
+    }
+    else // use the info entered the last time
+    {
+        if ( !fontinfo.empty() && !facename.empty() )
+        {
+            // we tried to find a match with facename -- now try without it
+            fontinfo = GetConfig()->Read(encName);
+        }

 
 

-        if ( !!fontinfo )
+        if ( !fontinfo.empty() )

         {
             if ( info->FromString(fontinfo) )
             {
                 if ( wxTestFontEncoding(*info) )
                 {
                     // ok, got something
         {
             if ( info->FromString(fontinfo) )
             {
                 if ( wxTestFontEncoding(*info) )
                 {
                     // ok, got something

-                    return TRUE;
+                    return true;

                 }
                 //else: no such fonts, look for something else
                 }
                 //else: no such fonts, look for something else

+                //      (should we erase the outdated value?)

             }
             else
             {
             }
             else
             {

-                wxLogDebug(wxT("corrupted config data: string '%s' is not "
-                              "a valid font encoding info"), fontinfo.c_str());
+                wxLogDebug(wxT("corrupted config data: string '%s' is not a valid font encoding info"),
+                           fontinfo);
+            }
+        }
+        //else: there is no information in config about this encoding
+    }
+#endif // wxUSE_CONFIG
+
+    // now try to map this encoding to a compatible one which we have on this
+    // system
+    wxFontEncodingArray equiv = wxEncodingConverter::GetAllEquivalents(encoding);
+    size_t count = equiv.GetCount();
+    bool foundEquivEncoding = false;
+    wxFontEncoding equivEncoding = wxFONTENCODING_SYSTEM;
+    if ( count )
+    {
+        for ( size_t i = 0; i < count && !foundEquivEncoding; i++ )
+        {
+            // don't test for encoding itself, we already know we don't have it
+            if ( equiv[i] == encoding )
+                continue;
+
+            if ( TestAltEncoding(configEntry, equiv[i], info) )
+            {
+                equivEncoding = equiv[i];
+
+                foundEquivEncoding = true;

             }
         }
     }
 
     // ask the user
             }
         }
     }
 
     // ask the user

+#if wxUSE_FONTDLG

     if ( interactive )
     {
         wxString title(m_titleDialog);
         if ( !title )
     if ( interactive )
     {
         wxString title(m_titleDialog);
         if ( !title )

-            title << wxTheApp->GetAppName() << _(": unknown encoding");
+            title << wxTheApp->GetAppDisplayName() << _(": unknown encoding");

 
 

-        // the message
-        wxString msg;
-        msg.Printf(_("The encoding '%s' is unknown.\n"
-                     "Would you like to select a font to be used for this "
-                     "encoding\n"
-                     "(otherwise the text in this encoding will not be "
-                     "shown correctly)?"),
-                     GetEncodingDescription(encoding).c_str());
+        // built the message
+        wxString encDesc = GetEncodingDescription(encoding),
+                 msg;
+        if ( foundEquivEncoding )
+        {
+            // ask the user if he wants to override found alternative encoding
+            msg.Printf(_("No font for displaying text in encoding '%s' found,\nbut an alternative encoding '%s' is available.\nDo you want to use this encoding (otherwise you will have to choose another one)?"),
+                       encDesc, GetEncodingDescription(equivEncoding));
+        }
+        else
+        {
+            msg.Printf(_("No font for displaying text in encoding '%s' found.\nWould you like to select a font to be used for this encoding\n(otherwise the text in this encoding will not be shown correctly)?"),
+                       encDesc);
+        }

 
 

-        wxWindow *parent = m_windowParent;
-        if ( !parent )
-            parent = wxTheApp->GetTopWindow();
+        // the question is different in 2 cases so the answer has to be
+        // interpreted differently as well
+        int answer = foundEquivEncoding ? wxNO : wxYES;

 
         if ( wxMessageBox(msg, title,
 
         if ( wxMessageBox(msg, title,

-                          wxICON_QUESTION | wxYES_NO, parent) == wxYES )
+                          wxICON_QUESTION | wxYES_NO,
+                          m_windowParent) == answer )

         {
             wxFontData data;
             data.SetEncoding(encoding);
             data.EncodingInfo() = *info;
         {
             wxFontData data;
             data.SetEncoding(encoding);
             data.EncodingInfo() = *info;

-            wxFontDialog dialog(parent, &data);
+            wxFontDialog dialog(m_windowParent, data);

             if ( dialog.ShowModal() == wxID_OK )
             {
                 wxFontData retData = dialog.GetFontData();
             if ( dialog.ShowModal() == wxID_OK )
             {
                 wxFontData retData = dialog.GetFontData();

-                wxFont font = retData.GetChosenFont();

 
                 *info = retData.EncodingInfo();
 
                 *info = retData.EncodingInfo();

-                info -> encoding = retData.GetEncoding();
+                info->encoding = retData.GetEncoding();

 
 

+#if wxUSE_CONFIG && wxUSE_FILECONFIG

                 // remember this in the config
                 // remember this in the config

-                if ( ChangePath(FONTMAPPER_FONT_FROM_ENCODING_PATH, &pathOld) )
+                wxFontMapperPathChanger path2(this,
+                                              FONTMAPPER_FONT_FROM_ENCODING_PATH);
+                if ( path2.IsOk() )

                 {
                     GetConfig()->Write(configEntry, info->ToString());
                 {
                     GetConfig()->Write(configEntry, info->ToString());

-
-                    RestorePath(pathOld);

                 }
                 }

+#endif // wxUSE_CONFIG

 
 

-                return TRUE;
+                return true;

             }
             //else: the user canceled the font selection dialog
         }
             }
             //else: the user canceled the font selection dialog
         }

-        //else: the user doesn't want to select a font
+        else
+        {
+            // the user doesn't want to select a font for this encoding
+            // or selected to use equivalent encoding
+            //
+            // remember it to avoid asking the same question again later
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+            wxFontMapperPathChanger path2(this,
+                                          FONTMAPPER_FONT_FROM_ENCODING_PATH);
+            if ( path2.IsOk() )
+            {
+                GetConfig()->Write
+                             (
+                                configEntry,
+                                foundEquivEncoding
+                                    ? (const wxChar*)info->ToString().c_str()
+                                    : FONTMAPPER_FONT_DONT_ASK
+                             );
+            }
+#endif // wxUSE_CONFIG
+        }

     }
     //else: we're in non-interactive mode
     }
     //else: we're in non-interactive mode

+#else
+    wxUnusedVar(equivEncoding);
+#endif // wxUSE_FONTDLG

 
 

-
-    // now try the default mappings:
-    wxFontEncodingArray equiv = wxEncodingConverter::GetAllEquivalents(encoding);
-    for ( unsigned i = (equiv[0] == encoding) ? 1 : 0; i < equiv.GetCount(); i++ )
-        if ( TestAltEncoding(configEntry, equiv[i], info) )
-            return TRUE;
-
-    return FALSE;
+    return foundEquivEncoding;

 }
 
 }
 

-
-

 bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
 bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,

-                                     wxFontEncoding *alt_encoding,
+                                     wxFontEncoding *encodingAlt,

                                      const wxString& facename,
                                      bool interactive)
 {
                                      const wxString& facename,
                                      bool interactive)
 {

+    wxCHECK_MSG( encodingAlt, false,
+                    _T("wxFontEncoding::GetAltForEncoding(): NULL pointer") );
+

     wxNativeEncodingInfo info;
     wxNativeEncodingInfo info;

-    bool r = GetAltForEncoding(encoding, &info, facename, interactive);
-    *alt_encoding = info.encoding;
-    return r;
-}
+    if ( !GetAltForEncoding(encoding, &info, facename, interactive) )
+        return false;

 
 

+    *encodingAlt = info.encoding;

 
 

+    return true;
+}

 
 bool wxFontMapper::IsEncodingAvailable(wxFontEncoding encoding,
                                        const wxString& facename)
 {
     wxNativeEncodingInfo info;
 
 
 bool wxFontMapper::IsEncodingAvailable(wxFontEncoding encoding,
                                        const wxString& facename)
 {
     wxNativeEncodingInfo info;
 

-    if (wxGetNativeFontEncoding(encoding, &info))
-    {
-        info.facename = facename;
-        return wxTestFontEncoding(info);
-    }
-    else
-        return FALSE;
+    if ( !wxGetNativeFontEncoding(encoding, &info) )
+        return false;
+
+    info.facename = facename;
+    return wxTestFontEncoding(info);

 }
 }

+
+#endif // wxUSE_FONTMAP