src/common/fontmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/fontmap.cpp
   3 // Purpose:     wxFontMapper class
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     04.11.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "fontmap.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35 #endif // PCH
  36
  37 #include "wx/fontmap.h"
  38
  39 #if wxUSE_CONFIG
  40     #include "wx/config.h"
  41     #include "wx/memconf.h"
  42 #endif
  43
  44 #if wxUSE_GUI
  45     #include "wx/msgdlg.h"
  46     #include "wx/fontdlg.h"
  47     #include "wx/choicdlg.h"
  48 #endif // wxUSE_GUI
  49
  50 #include "wx/encconv.h"
  51
  52 // ----------------------------------------------------------------------------
  53 // constants
  54 // ----------------------------------------------------------------------------
  55
  56 // the config paths we use
  57 static const wxChar* FONTMAPPER_ROOT_PATH = wxT("/wxWindows/FontMapper");
  58 static const wxChar* FONTMAPPER_CHARSET_PATH = wxT("Charsets");
  59 static const wxChar* FONTMAPPER_CHARSET_ALIAS_PATH = wxT("Aliases");
  60 #if wxUSE_GUI
  61     static const wxChar* FONTMAPPER_FONT_FROM_ENCODING_PATH = wxT("Encodings");
  62 #endif // wxUSE_GUI
  63
  64 // encodings supported by GetEncodingDescription
  65 static wxFontEncoding gs_encodings[] =
  66 {
  67     wxFONTENCODING_ISO8859_1,
  68     wxFONTENCODING_ISO8859_2,
  69     wxFONTENCODING_ISO8859_3,
  70     wxFONTENCODING_ISO8859_4,
  71     wxFONTENCODING_ISO8859_5,
  72     wxFONTENCODING_ISO8859_6,
  73     wxFONTENCODING_ISO8859_7,
  74     wxFONTENCODING_ISO8859_8,
  75     wxFONTENCODING_ISO8859_9,
  76     wxFONTENCODING_ISO8859_10,
  77     wxFONTENCODING_ISO8859_11,
  78     wxFONTENCODING_ISO8859_12,
  79     wxFONTENCODING_ISO8859_13,
  80     wxFONTENCODING_ISO8859_14,
  81     wxFONTENCODING_ISO8859_15,
  82     wxFONTENCODING_KOI8,
  83     wxFONTENCODING_CP1250,
  84     wxFONTENCODING_CP1251,
  85     wxFONTENCODING_CP1252,
  86     wxFONTENCODING_CP1253,
  87     wxFONTENCODING_CP1254,
  88     wxFONTENCODING_CP1255,
  89     wxFONTENCODING_CP1256,
  90     wxFONTENCODING_CP1257,
  91     wxFONTENCODING_CP437,
  92 };
  93
  94 // the descriptions for them
  95 static const wxChar* gs_encodingDescs[] =
  96 {
  97     wxTRANSLATE( "Western European (ISO-8859-1/Latin 1)" ),
  98     wxTRANSLATE( "Central European (ISO-8859-2/Latin 2)" ),
  99     wxTRANSLATE( "Esperanto (ISO-8859-3)" ),
 100     wxTRANSLATE( "Baltic (old) (ISO-8859-4)" ),
 101     wxTRANSLATE( "Cyrillic (Latin 5)" ),
 102     wxTRANSLATE( "Arabic (ISO-8859-6)" ),
 103     wxTRANSLATE( "Greek (ISO-8859-7)" ),
 104     wxTRANSLATE( "Hebrew (ISO-8859-8)" ),
 105     wxTRANSLATE( "Turkish (ISO-8859-9)" ),
 106     wxTRANSLATE( "Nordic (ISO-8859-10)" ),
 107     wxTRANSLATE( "Thai (ISO-8859-11)" ),
 108     wxTRANSLATE( "Indian (ISO-8859-12)" ),
 109     wxTRANSLATE( "Baltic (ISO-8859-13)" ),
 110     wxTRANSLATE( "Celtic (ISO-8859-14)" ),
 111     wxTRANSLATE( "Western European with Euro (ISO-8859-15/Latin 0)" ),
 112     wxTRANSLATE( "KOI8-R" ),
 113     wxTRANSLATE( "Windows Central European (CP 1250)" ),
 114     wxTRANSLATE( "Windows Cyrillic (CP 1251)" ),
 115     wxTRANSLATE( "Windows Western European (CP 1252)" ),
 116     wxTRANSLATE( "Windows Greek (CP 1253)" ),
 117     wxTRANSLATE( "Windows Turkish (CP 1254)" ),
 118     wxTRANSLATE( "Windows Hebrew (CP 1255)" ),
 119     wxTRANSLATE( "Windows Arabic (CP 1256)" ),
 120     wxTRANSLATE( "Windows Baltic (CP 1257)" ),
 121     wxTRANSLATE( "Windows/DOS OEM (CP 437)" ),
 122 };
 123
 124 // and the internal names
 125 static const wxChar* gs_encodingNames[] =
 126 {
 127     wxT( "iso8859-1" ),
 128     wxT( "iso8859-2" ),
 129     wxT( "iso8859-3" ),
 130     wxT( "iso8859-4" ),
 131     wxT( "iso8859-5" ),
 132     wxT( "iso8859-6" ),
 133     wxT( "iso8859-7" ),
 134     wxT( "iso8859-8" ),
 135     wxT( "iso8859-9" ),
 136     wxT( "iso8859-10" ),
 137     wxT( "iso8859-11" ),
 138     wxT( "iso8859-12" ),
 139     wxT( "iso8859-13" ),
 140     wxT( "iso8859-14" ),
 141     wxT( "iso8859-15" ),
 142     wxT( "koi8-r" ),
 143     wxT( "windows1250" ),
 144     wxT( "windows1251" ),
 145     wxT( "windows1252" ),
 146     wxT( "windows1253" ),
 147     wxT( "windows1254" ),
 148     wxT( "windows1255" ),
 149     wxT( "windows1256" ),
 150     wxT( "windows1257" ),
 151     wxT( "windows437" ),
 152 };
 153
 154 // ----------------------------------------------------------------------------
 155 // global data
 156 // ----------------------------------------------------------------------------
 157
 158 // private object
 159 static wxFontMapper gs_fontMapper;
 160
 161 // and public pointer
 162 wxFontMapper * wxTheFontMapper = &gs_fontMapper;
 163
 164 // ----------------------------------------------------------------------------
 165 // private classes
 166 // ----------------------------------------------------------------------------
 167
 168 // change the config path during the lifetime of this object
 169 class wxFontMapperPathChanger
 170 {
 171 public:
 172     wxFontMapperPathChanger(wxFontMapper *fontMapper, const wxString& path)
 173     {
 174         m_fontMapper = fontMapper;
 175         m_ok = m_fontMapper->ChangePath(path, &m_pathOld);
 176     }
 177
 178     bool IsOk() const { return m_ok; }
 179
 180     ~wxFontMapperPathChanger()
 181     {
 182         if ( IsOk() )
 183             m_fontMapper->RestorePath(m_pathOld);
 184     }
 185
 186 private:
 187     wxFontMapper *m_fontMapper;
 188     bool          m_ok;
 189     wxString      m_pathOld;
 190 };
 191
 192 // ============================================================================
 193 // implementation
 194 // ============================================================================
 195
 196 // ----------------------------------------------------------------------------
 197 // ctor and dtor
 198 // ----------------------------------------------------------------------------
 199
 200 wxFontMapper::wxFontMapper()
 201 {
 202 #if wxUSE_CONFIG
 203     m_config = NULL;
 204 #endif // wxUSE_CONFIG
 205
 206 #if wxUSE_GUI
 207     m_windowParent = NULL;
 208 #endif // wxUSE_GUI
 209 }
 210
 211 wxFontMapper::~wxFontMapper()
 212 {
 213 }
 214
 215 // ----------------------------------------------------------------------------
 216 // customisation
 217 // ----------------------------------------------------------------------------
 218
 219 #if wxUSE_CONFIG
 220
 221 /* static */ const wxChar *wxFontMapper::GetDefaultConfigPath()
 222 {
 223     return FONTMAPPER_ROOT_PATH;
 224 }
 225
 226 void wxFontMapper::SetConfigPath(const wxString& prefix)
 227 {
 228     wxCHECK_RET( !prefix.IsEmpty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
 229                  wxT("an absolute path should be given to wxFontMapper::SetConfigPath()") );
 230
 231     m_configRootPath = prefix;
 232 }
 233
 234 // ----------------------------------------------------------------------------
 235 // get config object and path for it
 236 // ----------------------------------------------------------------------------
 237
 238 wxConfigBase *wxFontMapper::GetConfig()
 239 {
 240     if ( !m_config )
 241     {
 242         // try the default
 243         m_config = wxConfig::Get(FALSE /*don't create on demand*/ );
 244
 245         if ( !m_config )
 246         {
 247             // we still want to have a config object because otherwise we would
 248             // keep asking the user the same questions in the interactive mode,
 249             // so create a dummy config which won't write to any files/registry
 250             // but will allow us to remember the results of the questions at
 251             // least during this run
 252             m_config = new wxMemoryConfig;
 253             wxConfig::Set(m_config);
 254         }
 255     }
 256
 257     return m_config;
 258 }
 259
 260 const wxString& wxFontMapper::GetConfigPath()
 261 {
 262     if ( !m_configRootPath )
 263     {
 264         // use the default
 265         m_configRootPath = GetDefaultConfigPath();
 266     }
 267
 268     return m_configRootPath;
 269 }
 270 #endif
 271
 272 bool wxFontMapper::ChangePath(const wxString& pathNew, wxString *pathOld)
 273 {
 274 #if wxUSE_CONFIG
 275     wxConfigBase *config = GetConfig();
 276     if ( !config )
 277         return FALSE;
 278
 279     *pathOld = config->GetPath();
 280
 281     wxString path = GetConfigPath();
 282     if ( path.IsEmpty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
 283     {
 284         path += wxCONFIG_PATH_SEPARATOR;
 285     }
 286
 287     wxASSERT_MSG( !pathNew || (pathNew[0] != wxCONFIG_PATH_SEPARATOR),
 288                   wxT("should be a relative path") );
 289
 290     path += pathNew;
 291
 292     config->SetPath(path);
 293
 294     return TRUE;
 295 #else
 296     return FALSE;
 297 #endif
 298 }
 299
 300 void wxFontMapper::RestorePath(const wxString& pathOld)
 301 {
 302 #if wxUSE_CONFIG
 303     GetConfig()->SetPath(pathOld);
 304 #else
 305 #endif
 306 }
 307
 308 // ----------------------------------------------------------------------------
 309 // charset/encoding correspondence
 310 // ----------------------------------------------------------------------------
 311
 312 /* static */
 313 wxString wxFontMapper::GetEncodingDescription(wxFontEncoding encoding)
 314 {
 315     size_t count = WXSIZEOF(gs_encodingDescs);
 316
 317     wxASSERT_MSG( count == WXSIZEOF(gs_encodings),
 318                   wxT("inconsitency detected - forgot to update one of the arrays?") );
 319
 320     for ( size_t i = 0; i < count; i++ )
 321     {
 322         if ( gs_encodings[i] == encoding )
 323         {
 324             return wxGetTranslation(gs_encodingDescs[i]);
 325         }
 326     }
 327
 328     wxString str;
 329     str.Printf(_("Unknown encoding (%d)"), encoding);
 330
 331     return str;
 332 }
 333
 334 /* static */
 335 wxString wxFontMapper::GetEncodingName(wxFontEncoding encoding)
 336 {
 337     size_t count = WXSIZEOF(gs_encodingNames);
 338
 339     wxASSERT_MSG( count == WXSIZEOF(gs_encodings),
 340                   wxT("inconsistency detected - forgot to update one of the arrays?") );
 341
 342     for ( size_t i = 0; i < count; i++ )
 343     {
 344         if ( gs_encodings[i] == encoding )
 345         {
 346             return wxGetTranslation(gs_encodingNames[i]);
 347         }
 348     }
 349
 350     wxString str;
 351     str.Printf(_("unknown-%d"), encoding);
 352
 353     return str;
 354 }
 355
 356 wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset,
 357                                                bool interactive)
 358 {
 359     wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 360
 361     // we're going to modify it, make a copy
 362     wxString cs = charset;
 363
 364 #if wxUSE_CONFIG
 365     // first try the user-defined settings
 366     wxString pathOld;
 367     if ( ChangePath(FONTMAPPER_CHARSET_PATH, &pathOld) )
 368     {
 369         wxConfigBase *config = GetConfig();
 370
 371         // do we have an encoding for this charset?
 372         long value = config->Read(charset, -1l);
 373         if ( value != -1 )
 374         {
 375             if ( value >= 0 && value <= wxFONTENCODING_MAX )
 376             {
 377                 encoding = (wxFontEncoding)value;
 378             }
 379             else
 380             {
 381                 wxLogDebug(wxT("corrupted config data: invalid encoding %ld for charset '%s' ignored"),
 382                            value, charset.c_str());
 383             }
 384         }
 385
 386         if ( encoding == wxFONTENCODING_SYSTEM )
 387         {
 388             // may be we have an alias?
 389             config->SetPath(FONTMAPPER_CHARSET_ALIAS_PATH);
 390
 391             wxString alias = config->Read(charset);
 392             if ( !!alias )
 393             {
 394                 // yes, we do - use it instead
 395                 cs = alias;
 396             }
 397         }
 398
 399         RestorePath(pathOld);
 400     }
 401 #endif
 402
 403     // if didn't find it there, try to reckognise it ourselves
 404     if ( encoding == wxFONTENCODING_SYSTEM )
 405     {
 406         // discard the optional quotes
 407         if ( !!cs )
 408         {
 409             if ( cs[0u] == _T('"') && cs.Last() == _T('"') )
 410             {
 411                 cs = wxString(cs.c_str(), cs.length() - 1);
 412             }
 413         }
 414
 415         cs.MakeUpper();
 416
 417         if ( !cs || cs == wxT("US-ASCII") )
 418             encoding = wxFONTENCODING_DEFAULT;
 419         else if ( cs == wxT("KOI8-R") || cs == wxT("KOI8-U") )
 420             encoding = wxFONTENCODING_KOI8;
 421         else if ( cs.Left(3) == wxT("ISO") )
 422         {
 423             // the dash is optional (or, to be exact, it is not, but
 424             // several brokenmails "forget" it)
 425             const wxChar *p = cs.c_str() + 3;
 426             if ( *p == wxT('-') )
 427                 p++;
 428
 429             unsigned int value;
 430             if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 )
 431             {
 432                 if ( value < wxFONTENCODING_ISO8859_MAX -
 433                              wxFONTENCODING_ISO8859_1 )
 434                 {
 435                     // it's a valid ISO8859 encoding
 436                     value += wxFONTENCODING_ISO8859_1 - 1;
 437                     encoding = (wxFontEncoding)value;
 438                 }
 439             }
 440         }
 441         else if ( cs.Left(8) == wxT("WINDOWS-") )
 442         {
 443             int value;
 444             if ( wxSscanf(cs.c_str() + 8, wxT("%u"), &value) == 1 )
 445             {
 446                 if ( value >= 1250 )
 447                 {
 448                     value -= 1250;
 449                     if ( value < wxFONTENCODING_CP12_MAX -
 450                                  wxFONTENCODING_CP1250 )
 451                     {
 452                         // a valid Windows code page
 453                         value += wxFONTENCODING_CP1250;
 454                         encoding = (wxFontEncoding)value;
 455                     }
 456                 }
 457             }
 458         }
 459         //else: unknown
 460     }
 461
 462 #if wxUSE_GUI
 463     // if still no luck, ask the user - unless disabled
 464     if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )
 465     {
 466         // prepare the dialog data
 467
 468         // the dialog title
 469         wxString title(m_titleDialog);
 470         if ( !title )
 471             title << wxTheApp->GetAppName() << _(": unknown charset");
 472
 473         // the message
 474         wxString msg;
 475         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());
 476
 477         // the list of choices
 478         size_t count = WXSIZEOF(gs_encodingDescs);
 479
 480         wxASSERT_MSG( count == WXSIZEOF(gs_encodings),
 481                       wxT("inconsitency detected - forgot to update one of the arrays?") );
 482
 483         wxString *encodingNamesTranslated = new wxString[count];
 484
 485         for ( size_t i = 0; i < count; i++ )
 486         {
 487             encodingNamesTranslated[i] = wxGetTranslation(gs_encodingDescs[i]);
 488         }
 489
 490         // the parent window
 491         wxWindow *parent = m_windowParent;
 492         if ( !parent )
 493             parent = wxTheApp->GetTopWindow();
 494
 495         // do ask the user and get back the index in encodings table
 496         int n = wxGetSingleChoiceIndex(msg, title,
 497                                        count,
 498                                        encodingNamesTranslated,
 499                                        parent);
 500
 501         delete [] encodingNamesTranslated;
 502
 503         if ( n != -1 )
 504         {
 505             encoding = gs_encodings[n];
 506
 507 #if wxUSE_CONFIG
 508         // save the result in the config now
 509             if ( ChangePath(FONTMAPPER_CHARSET_PATH, &pathOld) )
 510             {
 511                 wxConfigBase *config = GetConfig();
 512
 513                 // remember the alt encoding for this charset
 514                 if ( !config->Write(charset, (long)encoding) )
 515                 {
 516                     wxLogError(_("Failed to remember the encoding for the charset '%s'."), charset.c_str());
 517                 }
 518
 519                 RestorePath(pathOld);
 520             }
 521 #endif // wxUSE_CONFIG
 522         }
 523         //else: cancelled
 524     }
 525 #endif // wxUSE_GUI
 526
 527     return encoding;
 528 }
 529
 530 // ----------------------------------------------------------------------------
 531 // support for unknown encodings: we maintain a map between the
 532 // (platform-specific) strings identifying them and our wxFontEncodings they
 533 // correspond to which is used by GetFontForEncoding() function
 534 // ----------------------------------------------------------------------------
 535
 536 #if wxUSE_GUI
 537
 538 bool wxFontMapper::TestAltEncoding(const wxString& configEntry,
 539                                    wxFontEncoding encReplacement,
 540                                    wxNativeEncodingInfo *info)
 541 {
 542     if ( wxGetNativeFontEncoding(encReplacement, info) &&
 543          wxTestFontEncoding(*info) )
 544     {
 545 #if wxUSE_CONFIG
 546         // remember the mapping in the config
 547         wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
 548
 549         if ( path.IsOk() )
 550         {
 551             GetConfig()->Write(configEntry, info->ToString());
 552         }
 553 #endif // wxUSE_CONFIG
 554         return TRUE;
 555     }
 556
 557     return FALSE;
 558 }
 559
 560 #if wxUSE_GUI
 561 class ReentrancyBlocker
 562 {
 563 public:
 564     ReentrancyBlocker(bool& b) : m_b(b) { m_b = TRUE; }
 565     ~ReentrancyBlocker() { m_b = FALSE; }
 566
 567 private:
 568     bool& m_b;
 569 };
 570 #endif
 571
 572 bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
 573                                      wxNativeEncodingInfo *info,
 574                                      const wxString& facename,
 575                                      bool interactive)
 576 {
 577 #if wxUSE_GUI
 578     // we need a flag to prevent infinite recursion which happens, for
 579     // example, when GetAltForEncoding() is called from an OnPaint() handler:
 580     // in this case, wxYield() which is called from wxMessageBox() we use here
 581     // will lead to another call of OnPaint() and hence to another call of
 582     // GetAltForEncoding() - and it is impossible to catch this from the user
 583     // code because we are called from wxFont ctor implicitly.
 584
 585     // assume we're always called from the main thread, so that it is safe to
 586     // use a static var
 587     static bool s_inGetAltForEncoding = FALSE;
 588
 589     if ( interactive && s_inGetAltForEncoding )
 590         return FALSE;
 591
 592     ReentrancyBlocker blocker(s_inGetAltForEncoding);
 593 #endif // wxUSE_GUI
 594
 595     wxCHECK_MSG( info, FALSE, wxT("bad pointer in GetAltForEncoding") );
 596
 597     info->facename = facename;
 598
 599     if ( encoding == wxFONTENCODING_DEFAULT )
 600     {
 601         encoding = wxFont::GetDefaultEncoding();
 602     }
 603
 604     // if we failed to load the system default encoding, something is really
 605     // wrong and we'd better stop now - otherwise we will go into endless
 606     // recursion trying to create the font in the msg box with the error
 607     // message
 608     if ( encoding == wxFONTENCODING_SYSTEM )
 609     {
 610         wxFatalError(_("can't load any font, aborting"));
 611
 612         // wxFatalError doesn't return
 613     }
 614
 615     wxString configEntry, encName = GetEncodingName(encoding);
 616     if ( !!facename )
 617     {
 618         configEntry = facename + _T("_");
 619     }
 620     configEntry += encName;
 621
 622 #if wxUSE_CONFIG
 623     // do we have a font spec for this encoding?
 624     wxString pathOld;
 625     if ( ChangePath(FONTMAPPER_FONT_FROM_ENCODING_PATH, &pathOld) )
 626     {
 627         wxConfigBase *config = GetConfig();
 628
 629         wxString fontinfo = config->Read(configEntry);
 630
 631         RestorePath(pathOld);
 632
 633         if ( !!fontinfo && !!facename )
 634         {
 635             // we tried to find a match with facename - now try without it
 636             fontinfo = config->Read(encName);
 637         }
 638
 639         if ( !!fontinfo )
 640         {
 641             if ( info->FromString(fontinfo) )
 642             {
 643                 if ( wxTestFontEncoding(*info) )
 644                 {
 645                     // ok, got something
 646                     return TRUE;
 647                 }
 648                 //else: no such fonts, look for something else
 649             }
 650             else
 651             {
 652                 wxLogDebug(wxT("corrupted config data: string '%s' is not a valid font encoding info"), fontinfo.c_str());
 653             }
 654         }
 655         //else: there is no information in config about this encoding
 656     }
 657 #endif // wxUSE_CONFIG
 658
 659     // ask the user
 660     if ( interactive )
 661     {
 662         wxString title(m_titleDialog);
 663         if ( !title )
 664             title << wxTheApp->GetAppName() << _(": unknown encoding");
 665
 666         // the message
 667         wxString msg;
 668         msg.Printf(_("The encoding '%s' is unknown.\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)?"),
 669                      GetEncodingDescription(encoding).c_str());
 670
 671         wxWindow *parent = m_windowParent;
 672         if ( !parent )
 673             parent = wxTheApp->GetTopWindow();
 674
 675         if ( wxMessageBox(msg, title,
 676                           wxICON_QUESTION | wxYES_NO, parent) == wxYES )
 677         {
 678             wxFontData data;
 679             data.SetEncoding(encoding);
 680             data.EncodingInfo() = *info;
 681             wxFontDialog dialog(parent, &data);
 682             if ( dialog.ShowModal() == wxID_OK )
 683             {
 684                 wxFontData retData = dialog.GetFontData();
 685                 wxFont font = retData.GetChosenFont();
 686
 687                 *info = retData.EncodingInfo();
 688                 info -> encoding = retData.GetEncoding();
 689
 690 #if wxUSE_CONFIG
 691             // remember this in the config
 692                 if ( ChangePath(FONTMAPPER_FONT_FROM_ENCODING_PATH, &pathOld) )
 693                 {
 694                     GetConfig()->Write(configEntry, info->ToString());
 695
 696                     RestorePath(pathOld);
 697                 }
 698 #endif
 699
 700                 return TRUE;
 701             }
 702             //else: the user canceled the font selection dialog
 703         }
 704         //else: the user doesn't want to select a font
 705     }
 706     //else: we're in non-interactive mode
 707
 708     // now try the default mappings:
 709     wxFontEncodingArray equiv = wxEncodingConverter::GetAllEquivalents(encoding);
 710     size_t count = equiv.GetCount();
 711     if ( count )
 712     {
 713         for ( size_t i = (equiv[0] == encoding) ? 1 : 0; i < count; i++ )
 714         {
 715             if ( TestAltEncoding(configEntry, equiv[i], info) )
 716                 return TRUE;
 717         }
 718     }
 719
 720     return FALSE;
 721 }
 722
 723 bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
 724                                      wxFontEncoding *alt_encoding,
 725                                      const wxString& facename,
 726                                      bool interactive)
 727 {
 728     wxNativeEncodingInfo info;
 729     bool r = GetAltForEncoding(encoding, &info, facename, interactive);
 730     *alt_encoding = info.encoding;
 731     return r;
 732 }
 733
 734 bool wxFontMapper::IsEncodingAvailable(wxFontEncoding encoding,
 735                                        const wxString& facename)
 736 {
 737     wxNativeEncodingInfo info;
 738
 739     if (wxGetNativeFontEncoding(encoding, &info))
 740     {
 741         info.facename = facename;
 742         return wxTestFontEncoding(info);
 743     }
 744
 745     return FALSE;
 746 }
 747
 748 #endif // wxUSE_GUI