X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3c1866e88fb77fc7e0b349cc15f6cebf0f727a9d..9f4de6b2cf06f53a98b28f53640f3b9ec8cf4182:/src/common/fontmap.cpp?ds=inline diff --git a/src/common/fontmap.cpp b/src/common/fontmap.cpp index 081c2c5215..c976d72af6 100644 --- a/src/common/fontmap.cpp +++ b/src/common/fontmap.cpp @@ -28,24 +28,184 @@ #pragma hdrstop #endif +#if wxUSE_FONTMAP + #ifndef WX_PRECOMP #include "wx/app.h" #include "wx/log.h" #include "wx/intl.h" #endif // PCH +#include "wx/module.h" #include "wx/fontmap.h" -#include "wx/config.h" -#include "wx/choicdlg.h" + +#if wxUSE_CONFIG + #include "wx/config.h" + #include "wx/memconf.h" +#endif + +#if wxUSE_GUI + #include "wx/fontutil.h" + #include "wx/msgdlg.h" + #include "wx/fontdlg.h" + #include "wx/choicdlg.h" +#endif // wxUSE_GUI + +#include "wx/encconv.h" // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- // the config paths we use -static const char* FONTMAPPER_ROOT_PATH = _T("FontMapper"); -static const char* FONTMAPPER_CHARSET_PATH = _T("Charsets"); -static const char* FONTMAPPER_CHARSET_ALIAS_PATH = _T("Aliases"); +#if wxUSE_CONFIG +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"); + +// we only ask questions in GUI mode +#if wxUSE_GUI + static const wxChar* FONTMAPPER_FONT_FROM_ENCODING_PATH = wxT("Encodings"); + static const wxChar* FONTMAPPER_FONT_DONT_ASK = wxT("none"); +#endif // wxUSE_GUI +#endif // wxUSE_CONFIG + +// 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_CP932, + wxFONTENCODING_CP936, + wxFONTENCODING_CP949, + wxFONTENCODING_CP950, + wxFONTENCODING_CP1250, + wxFONTENCODING_CP1251, + wxFONTENCODING_CP1252, + wxFONTENCODING_CP1253, + wxFONTENCODING_CP1254, + wxFONTENCODING_CP1255, + wxFONTENCODING_CP1256, + wxFONTENCODING_CP1257, + wxFONTENCODING_CP437, + wxFONTENCODING_UTF7, + wxFONTENCODING_UTF8, +}; + +// the descriptions for them +static const wxChar* gs_encodingDescs[] = +{ + wxTRANSLATE( "Western European (ISO-8859-1)" ), + wxTRANSLATE( "Central European (ISO-8859-2)" ), + wxTRANSLATE( "Esperanto (ISO-8859-3)" ), + wxTRANSLATE( "Baltic (old) (ISO-8859-4)" ), + wxTRANSLATE( "Cyrillic (ISO-8859-5)" ), + wxTRANSLATE( "Arabic (ISO-8859-6)" ), + wxTRANSLATE( "Greek (ISO-8859-7)" ), + wxTRANSLATE( "Hebrew (ISO-8859-8)" ), + wxTRANSLATE( "Turkish (ISO-8859-9)" ), + wxTRANSLATE( "Nordic (ISO-8859-10)" ), + wxTRANSLATE( "Thai (ISO-8859-11)" ), + wxTRANSLATE( "Indian (ISO-8859-12)" ), + wxTRANSLATE( "Baltic (ISO-8859-13)" ), + wxTRANSLATE( "Celtic (ISO-8859-14)" ), + wxTRANSLATE( "Western European with Euro (ISO-8859-15)" ), + wxTRANSLATE( "KOI8-R" ), + wxTRANSLATE( "Windows Japanese (CP 932)" ), + wxTRANSLATE( "Windows Chinese Simplified (CP 936)" ), + wxTRANSLATE( "Windows Korean (CP 949)" ), + wxTRANSLATE( "Windows Chinese Traditional (CP 950)" ), + wxTRANSLATE( "Windows Central European (CP 1250)" ), + wxTRANSLATE( "Windows Cyrillic (CP 1251)" ), + wxTRANSLATE( "Windows Western European (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)" ), + wxTRANSLATE( "Windows/DOS OEM (CP 437)" ), + wxTRANSLATE( "Unicode 7 bit (UTF-7)" ), + wxTRANSLATE( "Unicode 8 bit (UTF-8)" ), +}; + +// and the internal names (these are not translated on purpose!) +static const wxChar* gs_encodingNames[] = +{ + wxT( "iso-8859-1" ), + wxT( "iso-8859-2" ), + wxT( "iso-8859-3" ), + wxT( "iso-8859-4" ), + wxT( "iso-8859-5" ), + wxT( "iso-8859-6" ), + wxT( "iso-8859-7" ), + wxT( "iso-8859-8" ), + wxT( "iso-8859-9" ), + wxT( "iso-8859-10" ), + wxT( "iso-8859-11" ), + wxT( "iso-8859-12" ), + wxT( "iso-8859-13" ), + wxT( "iso-8859-14" ), + wxT( "iso-8859-15" ), + wxT( "koi8-r" ), + wxT( "windows-932" ), + wxT( "windows-936" ), + wxT( "windows-949" ), + wxT( "windows-950" ), + wxT( "windows-1250" ), + wxT( "windows-1251" ), + wxT( "windows-1252" ), + wxT( "windows-1253" ), + wxT( "windows-1254" ), + wxT( "windows-1255" ), + wxT( "windows-1256" ), + wxT( "windows-1257" ), + wxT( "windows-437" ), + wxT( "utf-7" ), + wxT( "utf-8" ), +}; + + +// ---------------------------------------------------------------------------- +// private classes +// ---------------------------------------------------------------------------- + +// change the config path during the lifetime of this object +class wxFontMapperPathChanger +{ +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); + } + +private: + wxFontMapper *m_fontMapper; + bool m_ok; + wxString m_pathOld; +}; // ============================================================================ // implementation @@ -57,18 +217,58 @@ static const char* FONTMAPPER_CHARSET_ALIAS_PATH = _T("Aliases"); wxFontMapper::wxFontMapper() { +#if wxUSE_CONFIG m_config = NULL; + m_configIsDummy = FALSE; +#endif // wxUSE_CONFIG + +#if wxUSE_GUI m_windowParent = NULL; +#endif // wxUSE_GUI } wxFontMapper::~wxFontMapper() { +#if wxUSE_CONFIG + if ( m_configIsDummy ) + delete m_config; +#endif // wxUSE_CONFIG } +wxFontMapper *wxFontMapper::sm_instance = NULL; + +/*static*/ wxFontMapper *wxFontMapper::Get() +{ + if ( !sm_instance ) + sm_instance = new wxFontMapper; + return sm_instance; +} + +/*static*/ wxFontMapper *wxFontMapper::Set(wxFontMapper *mapper) +{ + wxFontMapper *old = sm_instance; + sm_instance = mapper; + return old; +} + +class wxFontMapperModule: public wxModule +{ +public: + wxFontMapperModule() : wxModule() {} + virtual bool OnInit() { return TRUE; } + virtual void OnExit() { delete wxFontMapper::Set(NULL); } + + DECLARE_DYNAMIC_CLASS(wxFontMapperModule) +}; + +IMPLEMENT_DYNAMIC_CLASS(wxFontMapperModule, wxModule) + // ---------------------------------------------------------------------------- // customisation // ---------------------------------------------------------------------------- +#if wxUSE_CONFIG + /* static */ const wxChar *wxFontMapper::GetDefaultConfigPath() { return FONTMAPPER_ROOT_PATH; @@ -77,13 +277,11 @@ wxFontMapper::~wxFontMapper() void wxFontMapper::SetConfigPath(const wxString& prefix) { wxCHECK_RET( !prefix.IsEmpty() && prefix[0] == wxCONFIG_PATH_SEPARATOR, - _T("an absolute path should be given to " - "wxFontMapper::SetConfigPath()") ); + wxT("an absolute path should be given to wxFontMapper::SetConfigPath()") ); m_configRootPath = prefix; } - // ---------------------------------------------------------------------------- // get config object and path for it // ---------------------------------------------------------------------------- @@ -93,7 +291,36 @@ wxConfigBase *wxFontMapper::GetConfig() if ( !m_config ) { // try the default - m_config = wxConfig::Get(); + m_config = wxConfig::Get(FALSE /*don't create on demand*/ ); + + if ( !m_config ) + { + // we still want to have a config object because otherwise we would + // keep asking the user the same questions in the interactive mode, + // so create a dummy config which won't write to any files/registry + // but will allow us to remember the results of the questions at + // least during this run + m_config = new wxMemoryConfig; + m_configIsDummy = TRUE; + // VS: we can't call wxConfig::Set(m_config) here because that would + // disable automatic wxConfig instance creation if this code was + // called before wxApp::OnInit (this happens in wxGTK -- it sets + // default wxFont encoding in wxApp::Initialize()) + } + } + + if ( m_configIsDummy && wxConfig::Get(FALSE) != NULL ) + { + // VS: in case we created dummy m_config (see above), we want to switch back + // to the real one as soon as one becomes available. + delete m_config; + m_config = wxConfig::Get(FALSE); + m_configIsDummy = FALSE; + // FIXME: ideally, we should add keys from dummy config to the real one now, + // but it is a low-priority task because typical wxWin application + // either doesn't use wxConfig at all or creates wxConfig object in + // wxApp::OnInit(), before any real interaction with the user takes + // place... } return m_config; @@ -109,9 +336,11 @@ const wxString& wxFontMapper::GetConfigPath() return m_configRootPath; } +#endif bool wxFontMapper::ChangePath(const wxString& pathNew, wxString *pathOld) { +#if wxUSE_CONFIG wxConfigBase *config = GetConfig(); if ( !config ) return FALSE; @@ -125,32 +354,99 @@ bool wxFontMapper::ChangePath(const wxString& pathNew, wxString *pathOld) } wxASSERT_MSG( !pathNew || (pathNew[0] != wxCONFIG_PATH_SEPARATOR), - _T("should be a relative path") ); + wxT("should be a relative path") ); path += pathNew; config->SetPath(path); return TRUE; +#else + return FALSE; +#endif } void wxFontMapper::RestorePath(const wxString& pathOld) { +#if wxUSE_CONFIG GetConfig()->SetPath(pathOld); +#else +#endif } // ---------------------------------------------------------------------------- // charset/encoding correspondence // ---------------------------------------------------------------------------- +/* static */ +wxString wxFontMapper::GetEncodingDescription(wxFontEncoding encoding) +{ + if ( encoding == wxFONTENCODING_DEFAULT ) + { + return _("Default encoding"); + } + + 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) +{ + if ( encoding == wxFONTENCODING_DEFAULT ) + { + return _("default"); + } + + size_t count = WXSIZEOF(gs_encodingNames); + + wxASSERT_MSG( count == WXSIZEOF(gs_encodings), + wxT("inconsistency detected - forgot to update one of the arrays?") ); + + for ( size_t i = 0; i < count; i++ ) + { + if ( gs_encodings[i] == encoding ) + { + return gs_encodingNames[i]; + } + } + + wxString str; + str.Printf(_("unknown-%d"), encoding); + + return str; +} + wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset, bool interactive) { + // a special pseudo encoding which means "don't ask me about this charset + // any more" - we need it to avoid driving the user crazy with asking him + // time after time about the same charset which he [presumably] doesn't + // have the fonts fot + static const int wxFONTENCODING_UNKNOWN = -2; + wxFontEncoding encoding = wxFONTENCODING_SYSTEM; // we're going to modify it, make a copy wxString cs = charset; +#if wxUSE_CONFIG // first try the user-defined settings wxString pathOld; if ( ChangePath(FONTMAPPER_CHARSET_PATH, &pathOld) ) @@ -161,14 +457,20 @@ wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset, long value = config->Read(charset, -1l); if ( value != -1 ) { + if ( value == wxFONTENCODING_UNKNOWN ) + { + // don't try to find it, in particular don't ask the user + return wxFONTENCODING_SYSTEM; + } + if ( value >= 0 && value <= wxFONTENCODING_MAX ) { encoding = (wxFontEncoding)value; } else { - wxLogDebug(_T("corrupted config data - invalid encoding %ld " - "for charset '%s'"), value, charset.c_str()); + wxLogDebug(wxT("corrupted config data: invalid encoding %ld for charset '%s' ignored"), + value, charset.c_str()); } } @@ -187,50 +489,124 @@ wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset, RestorePath(pathOld); } +#endif // wxUSE_CONFIG - // if didn't find it there, try to reckognise it ourselves + // if didn't find it there, try to recognize it ourselves if ( encoding == wxFONTENCODING_SYSTEM ) { + // trim any spaces + cs.Trim(TRUE); + cs.Trim(FALSE); + + // discard the optional quotes + if ( !cs.empty() ) + { + if ( cs[0u] == _T('"') && cs.Last() == _T('"') ) + { + cs = wxString(cs.c_str(), cs.length() - 1); + } + } + cs.MakeUpper(); - if ( !cs || cs == _T("US-ASCII") ) + if ( cs.empty() || cs == _T("US-ASCII") ) + { encoding = wxFONTENCODING_DEFAULT; - else if ( cs == _T("KOI8-R") || cs == _T("KOI8-U") ) + } + else if ( cs == wxT("UTF-7") ) + { + encoding = wxFONTENCODING_UTF7; + } + else if ( cs == wxT("UTF-8") ) + { + encoding = wxFONTENCODING_UTF8; + } + else if ( cs == wxT("KOI8-R") || + cs == wxT("KOI8-U") || + cs == wxT("KOI8-RU") ) + { + // although koi8-ru is not strictly speaking the same as koi8-r, + // they are similar enough to make mapping it to koi8 better than + // not reckognizing it at all encoding = wxFONTENCODING_KOI8; - else if ( cs.Left(3) == _T("ISO") ) + } + 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 == _T('-') ) + if ( *p == wxT('-') ) p++; unsigned int value; - if ( wxSscanf(p, _T("8859-%u"), &value) == 1 ) + if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 ) { - if ( value < wxFONTENCODING_ISO8859_MAX - - wxFONTENCODING_ISO8859_1 ) + // make it 0 based and check that it is strictly positive in + // the process (no such thing as iso8859-0 encoding) + if ( (value-- > 0) && + (value < wxFONTENCODING_ISO8859_MAX - + wxFONTENCODING_ISO8859_1) ) { // it's a valid ISO8859 encoding - value += wxFONTENCODING_ISO8859_1 - 1; + value += wxFONTENCODING_ISO8859_1; encoding = (wxFontEncoding)value; } } } - else if ( cs.Left(8) == _T("WINDOWS-") ) + else // check for Windows charsets { - int value; - if ( wxSscanf(cs.c_str() + 8, "%u", &value) == 1 ) + size_t len; + if ( cs.Left(7) == wxT("WINDOWS") ) + { + len = 7; + } + else if ( cs.Left(2) == wxT("CP") ) + { + len = 2; + } + else // not a Windows encoding + { + len = 0; + } + + if ( len ) { - if ( value >= 1250 ) + const wxChar *p = cs.c_str() + len; + if ( *p == wxT('-') ) + p++; + + int value; + if ( wxSscanf(p, wxT("%u"), &value) == 1 ) { - value -= 1250; - if ( value < wxFONTENCODING_CP12_MAX - - wxFONTENCODING_CP1250 - 1 ) + if ( value >= 1250 ) + { + value -= 1250; + if ( value < wxFONTENCODING_CP12_MAX - + wxFONTENCODING_CP1250 ) + { + // a valid Windows code page + value += wxFONTENCODING_CP1250; + encoding = (wxFontEncoding)value; + } + } + + switch ( value ) { - // a valid Windows code page - value += wxFONTENCODING_CP1250; - encoding = (wxFontEncoding)value; + case 932: + encoding = wxFONTENCODING_CP932; + break; + + case 936: + encoding = wxFONTENCODING_CP936; + break; + + case 949: + encoding = wxFONTENCODING_CP949; + break; + + case 950: + encoding = wxFONTENCODING_CP950; + break; } } } @@ -238,6 +614,7 @@ wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset, //else: unknown } +#if wxUSE_GUI // if still no luck, ask the user - unless disabled if ( (encoding == wxFONTENCODING_SYSTEM) && interactive ) { @@ -250,78 +627,19 @@ wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset, // 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.c_str()); // the list of choices - static wxFontEncoding 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, - }; - - static const wxChar* encodingNames[] = - { - "West European (ISO-8859-1/Latin 1)", - "Central European (ISO-8859-2/Latin 2)", - "Esperanto (ISO-8859-3)", - "Baltic (ISO-8859-4)", - "Cyrillic (Latin 5)", - "Arabic (ISO-8859-6)" - "Greek (ISO-8859-7)", - "Hebrew (ISO-8859-8)", - "Turkish (ISO-8859-9)", - "Baltic II (ISO-8859-10)", - "Thai (ISO-8859-11)", - "ISO-8859-12", - "ISO-8859-13", - "ISO-8859-14", - "West European new (ISO-8859-15/Latin 0)", - "KOI8-R", - "Windows Latin 2 (CP 1250)", - "Windows Cyrillic (CP 1251)", - "Windows Latin 1 (CP 1252)", - "Windows Greek (CP 1253)", - "Windows Turkish (CP 1254)", - "Windows Hebrew (CP 1255)", - "Windows Arabic (CP 1256)", - "Windows Baltic (CP 1257)", - }; - - size_t count = WXSIZEOF(encodingNames); - - wxASSERT_MSG( count == WXSIZEOF(encodings), - _T("inconsitency detected - forgot to update one of " - "the arrays?") ); + size_t count = WXSIZEOF(gs_encodingDescs); + + wxASSERT_MSG( count == WXSIZEOF(gs_encodings), + wxT("inconsitency detected - forgot to update one of the arrays?") ); wxString *encodingNamesTranslated = new wxString[count]; - for ( size_t n = 0; n < count; n++ ) + for ( size_t i = 0; i < count; i++ ) { - encodingNamesTranslated[n] = wxGetTranslation(encodingNames[n]); + encodingNamesTranslated[i] = wxGetTranslation(gs_encodingDescs[i]); } // the parent window @@ -339,11 +657,306 @@ wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset, if ( n != -1 ) { - encoding = encodings[n]; + encoding = gs_encodings[n]; } - //else: cancelled + +#if wxUSE_CONFIG + // save the result in the config now + if ( ChangePath(FONTMAPPER_CHARSET_PATH, &pathOld) ) + { + wxConfigBase *config = GetConfig(); + + // remember the alt encoding for this charset - or remember that + // we don't know it + long value = n == -1 ? wxFONTENCODING_UNKNOWN : (long)encoding; + if ( !config->Write(charset, value) ) + { + wxLogError(_("Failed to remember the encoding for the charset '%s'."), charset.c_str()); + } + + RestorePath(pathOld); + } +#endif // wxUSE_CONFIG } +#endif // wxUSE_GUI return encoding; } +// ---------------------------------------------------------------------------- +// support for unknown encodings: we maintain a map between the +// (platform-specific) strings identifying them and our wxFontEncodings they +// correspond to which is used by GetFontForEncoding() function +// ---------------------------------------------------------------------------- + +#if wxUSE_GUI + +bool wxFontMapper::TestAltEncoding(const wxString& configEntry, + wxFontEncoding encReplacement, + wxNativeEncodingInfo *info) +{ + if ( wxGetNativeFontEncoding(encReplacement, info) && + wxTestFontEncoding(*info) ) + { +#if wxUSE_CONFIG + // remember the mapping in the config + wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH); + + if ( path.IsOk() ) + { + GetConfig()->Write(configEntry, info->ToString()); + } +#endif // wxUSE_CONFIG + return TRUE; + } + + return FALSE; +} + +#if wxUSE_GUI +class ReentrancyBlocker +{ +public: + ReentrancyBlocker(bool& b) : m_b(b) { m_b = TRUE; } + ~ReentrancyBlocker() { m_b = FALSE; } + +private: + bool& m_b; +}; +#endif + +bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding, + wxNativeEncodingInfo *info, + const wxString& facename, + bool interactive) +{ +#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; + + if ( encoding == wxFONTENCODING_DEFAULT ) + { + encoding = wxFont::GetDefaultEncoding(); + } + + // 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 + // recursion trying to create the font in the msg box with the error + // message + if ( encoding == wxFONTENCODING_SYSTEM ) + { + wxLogFatalError(_("can't load any font, aborting")); + + // wxLogFatalError doesn't return + } + + wxString configEntry, + encName = GetEncodingName(encoding); + if ( !!facename ) + { + configEntry = facename + _T("_"); + } + configEntry += encName; + +#if wxUSE_CONFIG + // do we have a font spec for this encoding? + wxString pathOld; + if ( ChangePath(FONTMAPPER_FONT_FROM_ENCODING_PATH, &pathOld) ) + { + wxConfigBase *config = GetConfig(); + + wxString fontinfo = config->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 && !!facename ) + { + // we tried to find a match with facename - now try without it + fontinfo = config->Read(encName); + } + + if ( !!fontinfo ) + { + if ( info->FromString(fontinfo) ) + { + if ( wxTestFontEncoding(*info) ) + { + // ok, got something + return TRUE; + } + //else: no such fonts, look for something else + // (should we erase the outdated value?) + } + else + { + wxLogDebug(wxT("corrupted config data: string '%s' is not a valid font encoding info"), + fontinfo.c_str()); + } + } + //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 +#if wxUSE_FONTDLG + if ( interactive ) + { + wxString title(m_titleDialog); + if ( !title ) + title << wxTheApp->GetAppName() << _(": unknown encoding"); + + // 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.c_str(), GetEncodingDescription(equivEncoding).c_str()); + } + 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.c_str()); + } + + // 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, + wxICON_QUESTION | wxYES_NO, + m_windowParent) == answer ) + { + wxFontData data; + data.SetEncoding(encoding); + data.EncodingInfo() = *info; + wxFontDialog dialog(m_windowParent, &data); + if ( dialog.ShowModal() == wxID_OK ) + { + wxFontData retData = dialog.GetFontData(); + wxFont font = retData.GetChosenFont(); + + *info = retData.EncodingInfo(); + info->encoding = retData.GetEncoding(); + +#if wxUSE_CONFIG + // remember this in the config + if ( ChangePath(FONTMAPPER_FONT_FROM_ENCODING_PATH, &pathOld) ) + { + GetConfig()->Write(configEntry, info->ToString()); + + RestorePath(pathOld); + } +#endif // wxUSE_CONFIG + + return TRUE; + } + //else: the user canceled the font selection dialog + } + 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 + if ( ChangePath(FONTMAPPER_FONT_FROM_ENCODING_PATH, &pathOld) ) + { + GetConfig()->Write + ( + configEntry, + foundEquivEncoding ? info->ToString().c_str() + : FONTMAPPER_FONT_DONT_ASK + ); + + RestorePath(pathOld); + } +#endif // wxUSE_CONFIG + } + } + //else: we're in non-interactive mode +#endif // wxUSE_FONTDLG + + return foundEquivEncoding; +} + +bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding, + wxFontEncoding *alt_encoding, + const wxString& facename, + bool interactive) +{ + wxNativeEncodingInfo info; + bool r = GetAltForEncoding(encoding, &info, facename, interactive); + *alt_encoding = info.encoding; + return r; +} + +bool wxFontMapper::IsEncodingAvailable(wxFontEncoding encoding, + const wxString& facename) +{ + wxNativeEncodingInfo info; + + if (wxGetNativeFontEncoding(encoding, &info)) + { + info.facename = facename; + return wxTestFontEncoding(info); + } + + return FALSE; +} + +#endif // wxUSE_GUI + +#endif // wxUSE_FONTMAP