src/unix/fontutil.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        unix/fontutil.cpp
   3 // Purpose:     Font helper functions for X11 (GDK/X)
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     05.11.99
   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 "fontutil.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 #endif // PCH
  33
  34 #ifdef __X__
  35     #ifdef __VMS__
  36         #pragma message disable nosimpint
  37     #endif
  38
  39     #include <X11/Xlib.h>
  40
  41     #ifdef __VMS__
  42         #pragma message enable nosimpint
  43     #endif
  44
  45     #include "wx/utils.h"       // for wxGetDisplay()
  46 #elif defined(__WXGTK__)
  47     // we have to declare struct tm to avoid problems with first forward
  48     // declaring it in C code (glib.h included from gdk.h does it) and then
  49     // defining it when time.h is included from the headers below - this is
  50     // known not to work at least with Sun CC 6.01
  51     #include <time.h>
  52
  53     #include <gdk/gdk.h>
  54 #endif
  55
  56 #include "wx/fontutil.h"
  57 #include "wx/fontmap.h"
  58 #include "wx/tokenzr.h"
  59 #include "wx/hash.h"
  60 #include "wx/module.h"
  61
  62 // ----------------------------------------------------------------------------
  63 // private data
  64 // ----------------------------------------------------------------------------
  65
  66 static wxHashTable *g_fontHash = (wxHashTable*) NULL;
  67
  68 // ----------------------------------------------------------------------------
  69 // private functions
  70 // ----------------------------------------------------------------------------
  71
  72 // define the functions to create and destroy native fonts for this toolkit
  73 #ifdef __X__
  74     wxNativeFont wxLoadFont(const wxString& fontSpec)
  75     {
  76         return XLoadQueryFont((Display *)wxGetDisplay(), fontSpec);
  77     }
  78
  79     inline void wxFreeFont(wxNativeFont font)
  80     {
  81         XFreeFont((Display *)wxGetDisplay(), (XFontStruct *)font);
  82     }
  83 #elif defined(__WXGTK__)
  84     wxNativeFont wxLoadFont(const wxString& fontSpec)
  85     {
  86        return gdk_font_load( wxConvertWX2MB(fontSpec) );
  87     }
  88
  89     inline void wxFreeFont(wxNativeFont font)
  90     {
  91         gdk_font_unref(font);
  92     }
  93 #else
  94     #error "Unknown GUI toolkit"
  95 #endif
  96
  97 static bool wxTestFontSpec(const wxString& fontspec);
  98
  99 static wxNativeFont wxLoadQueryFont(int pointSize,
 100                                     int family,
 101                                     int style,
 102                                     int weight,
 103                                     bool underlined,
 104                                     const wxString& facename,
 105                                     const wxString& xregistry,
 106                                     const wxString& xencoding,
 107                                     wxString* xFontName);
 108
 109 // ============================================================================
 110 // implementation
 111 // ============================================================================
 112
 113 // ----------------------------------------------------------------------------
 114 // wxNativeEncodingInfo
 115 // ----------------------------------------------------------------------------
 116
 117 // convert to/from the string representation: format is
 118 //      encodingid;registry;encoding[;facename]
 119 bool wxNativeEncodingInfo::FromString(const wxString& s)
 120 {
 121     // use ";", not "-" because it may be part of encoding name
 122     wxStringTokenizer tokenizer(s, _T(";"));
 123
 124     wxString encid = tokenizer.GetNextToken();
 125     long enc;
 126     if ( !encid.ToLong(&enc) )
 127         return FALSE;
 128     encoding = (wxFontEncoding)enc;
 129
 130     xregistry = tokenizer.GetNextToken();
 131     if ( !xregistry )
 132         return FALSE;
 133
 134     xencoding = tokenizer.GetNextToken();
 135     if ( !xencoding )
 136         return FALSE;
 137
 138     // ok even if empty
 139     facename = tokenizer.GetNextToken();
 140
 141     return TRUE;
 142 }
 143
 144 wxString wxNativeEncodingInfo::ToString() const
 145 {
 146     wxString s;
 147     s << (long)encoding << _T(';') << xregistry << _T(';') << xencoding;
 148     if ( !!facename )
 149     {
 150         s << _T(';') << facename;
 151     }
 152
 153     return s;
 154 }
 155
 156 // ----------------------------------------------------------------------------
 157 // wxNativeFontInfo
 158 // ----------------------------------------------------------------------------
 159
 160 void wxNativeFontInfo::Init()
 161 {
 162     m_isDefault = TRUE;
 163 }
 164
 165 bool wxNativeFontInfo::FromString(const wxString& s)
 166 {
 167     wxStringTokenizer tokenizer(s, _T(";"));
 168
 169     // check the version
 170     wxString token = tokenizer.GetNextToken();
 171     if ( token != _T('0') )
 172         return FALSE;
 173
 174     xFontName = tokenizer.GetNextToken();
 175
 176     // this should be the end
 177     if ( tokenizer.HasMoreTokens() )
 178         return FALSE;
 179
 180     return FromXFontName(xFontName);
 181 }
 182
 183 wxString wxNativeFontInfo::ToString() const
 184 {
 185     // 0 is the version
 186     return wxString::Format(_T("%d;%s"), 0, GetXFontName().c_str());
 187 }
 188
 189 bool wxNativeFontInfo::FromUserString(const wxString& s)
 190 {
 191     return FromXFontName(s);
 192 }
 193
 194 wxString wxNativeFontInfo::ToUserString() const
 195 {
 196     return GetXFontName();
 197 }
 198
 199 bool wxNativeFontInfo::HasElements() const
 200 {
 201     // we suppose that the foundry is never empty, so if it is it means that we
 202     // had never parsed the XLFD
 203     return !fontElements[0].empty();
 204 }
 205
 206 wxString wxNativeFontInfo::GetXFontComponent(wxXLFDField field) const
 207 {
 208     wxCHECK_MSG( field < wxXLFD_MAX, _T(""), _T("invalid XLFD field") );
 209
 210     if ( !HasElements() )
 211     {
 212         // const_cast
 213         if ( !((wxNativeFontInfo *)this)->FromXFontName(xFontName) )
 214             return _T("");
 215     }
 216
 217     return fontElements[field];
 218 }
 219
 220 bool wxNativeFontInfo::FromXFontName(const wxString& fontname)
 221 {
 222     // TODO: we should be able to handle the font aliases here, but how?
 223     wxStringTokenizer tokenizer(fontname, _T("-"));
 224
 225     // skip the leading, usually empty field (font name registry)
 226     if ( !tokenizer.HasMoreTokens() )
 227         return FALSE;
 228
 229     (void)tokenizer.GetNextToken();
 230
 231     for ( size_t n = 0; n < WXSIZEOF(fontElements); n++ )
 232     {
 233         if ( !tokenizer.HasMoreTokens() )
 234         {
 235             // not enough elements in the XLFD - or maybe an alias
 236             return FALSE;
 237         }
 238
 239         fontElements[n] = tokenizer.GetNextToken();
 240     }
 241
 242     // this should be all
 243     return !tokenizer.HasMoreTokens();
 244 }
 245
 246 wxString wxNativeFontInfo::GetXFontName() const
 247 {
 248     if ( xFontName.empty() )
 249     {
 250         for ( size_t n = 0; n < WXSIZEOF(fontElements); n++ )
 251         {
 252             // replace the non specified elements with '*' except for the
 253             // additional style which is usually just omitted
 254             wxString elt = fontElements[n];
 255             if ( elt.empty() && n != wxXLFD_ADDSTYLE )
 256             {
 257                 elt = _T('*');
 258             }
 259
 260             // const_cast
 261             ((wxNativeFontInfo *)this)->xFontName << _T('-') << elt;
 262         }
 263     }
 264
 265     return xFontName;
 266 }
 267
 268 void
 269 wxNativeFontInfo::SetXFontComponent(wxXLFDField field, const wxString& value)
 270 {
 271     wxCHECK_RET( field < wxXLFD_MAX, _T("invalid XLFD field") );
 272
 273     // this class should be initialized with a valid font spec first and only
 274     // then the fields may be modified!
 275     wxASSERT_MSG( !IsDefault(), _T("can't modify an uninitialized XLFD") );
 276
 277     if ( !HasElements() )
 278     {
 279         // const_cast
 280         if ( !((wxNativeFontInfo *)this)->FromXFontName(xFontName) )
 281         {
 282             wxFAIL_MSG( _T("can't set font element for invalid XLFD") );
 283
 284             return;
 285         }
 286     }
 287
 288     fontElements[field] = value;
 289
 290     // invalidate the XFLD, it doesn't correspond to the font elements any more
 291     xFontName.clear();
 292 }
 293
 294 void wxNativeFontInfo::SetXFontName(const wxString& xFontName_)
 295 {
 296     // invalidate the font elements, GetXFontComponent() will reparse the XLFD
 297     fontElements[0].clear();
 298
 299     xFontName = xFontName_;
 300
 301     m_isDefault = FALSE;
 302 }
 303
 304 // ----------------------------------------------------------------------------
 305 // common functions
 306 // ----------------------------------------------------------------------------
 307
 308 bool wxGetNativeFontEncoding(wxFontEncoding encoding,
 309                              wxNativeEncodingInfo *info)
 310 {
 311     wxCHECK_MSG( info, FALSE, _T("bad pointer in wxGetNativeFontEncoding") );
 312
 313     if ( encoding == wxFONTENCODING_DEFAULT )
 314     {
 315         encoding = wxFont::GetDefaultEncoding();
 316     }
 317
 318     switch ( encoding )
 319     {
 320         case wxFONTENCODING_ISO8859_1:
 321         case wxFONTENCODING_ISO8859_2:
 322         case wxFONTENCODING_ISO8859_3:
 323         case wxFONTENCODING_ISO8859_4:
 324         case wxFONTENCODING_ISO8859_5:
 325         case wxFONTENCODING_ISO8859_6:
 326         case wxFONTENCODING_ISO8859_7:
 327         case wxFONTENCODING_ISO8859_8:
 328         case wxFONTENCODING_ISO8859_9:
 329         case wxFONTENCODING_ISO8859_10:
 330         case wxFONTENCODING_ISO8859_11:
 331         case wxFONTENCODING_ISO8859_12:
 332         case wxFONTENCODING_ISO8859_13:
 333         case wxFONTENCODING_ISO8859_14:
 334         case wxFONTENCODING_ISO8859_15:
 335             {
 336                 int cp = encoding - wxFONTENCODING_ISO8859_1 + 1;
 337                 info->xregistry = wxT("iso8859");
 338                 info->xencoding.Printf(wxT("%d"), cp);
 339             }
 340             break;
 341
 342         case wxFONTENCODING_UTF8:
 343             info->xregistry = wxT("iso10646");
 344             info->xencoding = wxT("*");
 345             break;
 346
 347         case wxFONTENCODING_KOI8:
 348             info->xregistry = wxT("koi8");
 349
 350             // we don't make distinction between koi8-r, koi8-u and koi8-ru (so far)
 351             info->xencoding = wxT("*");
 352             break;
 353
 354         case wxFONTENCODING_CP1250:
 355         case wxFONTENCODING_CP1251:
 356         case wxFONTENCODING_CP1252:
 357         case wxFONTENCODING_CP1253:
 358         case wxFONTENCODING_CP1254:
 359         case wxFONTENCODING_CP1255:
 360         case wxFONTENCODING_CP1256:
 361         case wxFONTENCODING_CP1257:
 362             {
 363                 int cp = encoding - wxFONTENCODING_CP1250 + 1250;
 364                 info->xregistry = wxT("microsoft");
 365                 info->xencoding.Printf(wxT("cp%d"), cp);
 366             }
 367             break;
 368
 369         case wxFONTENCODING_SYSTEM:
 370             info->xregistry =
 371             info->xencoding = wxT("*");
 372             break;
 373
 374         default:
 375             // don't know how to translate this encoding into X fontspec
 376             return FALSE;
 377     }
 378
 379     info->encoding = encoding;
 380
 381     return TRUE;
 382 }
 383
 384 bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
 385 {
 386     wxString fontspec;
 387     fontspec.Printf(_T("-*-%s-*-*-*-*-*-*-*-*-*-*-%s-%s"),
 388                     !info.facename ? _T("*") : info.facename.c_str(),
 389                     info.xregistry.c_str(),
 390                     info.xencoding.c_str());
 391
 392     return wxTestFontSpec(fontspec);
 393 }
 394
 395 // ----------------------------------------------------------------------------
 396 // X-specific functions
 397 // ----------------------------------------------------------------------------
 398
 399 wxNativeFont wxLoadQueryNearestFont(int pointSize,
 400                                     int family,
 401                                     int style,
 402                                     int weight,
 403                                     bool underlined,
 404                                     const wxString &facename,
 405                                     wxFontEncoding encoding,
 406                                     wxString* xFontName)
 407 {
 408     if ( encoding == wxFONTENCODING_DEFAULT )
 409     {
 410         encoding = wxFont::GetDefaultEncoding();
 411     }
 412
 413     // first determine the encoding - if the font doesn't exist at all in this
 414     // encoding, it's useless to do all other approximations (i.e. size,
 415     // family &c don't matter much)
 416     wxNativeEncodingInfo info;
 417     if ( encoding == wxFONTENCODING_SYSTEM )
 418     {
 419         // This will always work so we don't test to save time
 420         wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
 421     }
 422     else
 423     {
 424         if ( !wxGetNativeFontEncoding(encoding, &info) ||
 425              !wxTestFontEncoding(info) )
 426         {
 427 #if wxUSE_FONTMAP
 428             if ( !wxTheFontMapper->GetAltForEncoding(encoding, &info) )
 429 #endif // wxUSE_FONTMAP
 430             {
 431                 // unspported encoding - replace it with the default
 432                 //
 433                 // NB: we can't just return 0 from here because wxGTK code doesn't
 434                 //     check for it (i.e. it supposes that we'll always succeed),
 435                 //     so it would provoke a crash
 436                 wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
 437             }
 438         }
 439     }
 440
 441     // OK, we have the correct xregistry/xencoding in info structure
 442     wxNativeFont font = 0;
 443
 444     // if we already have the X font name, try to use it
 445     if( xFontName && !xFontName->IsEmpty() )
 446     {
 447         //
 448         //  Make sure point size is correct for scale factor.
 449         //
 450         wxStringTokenizer tokenizer(*xFontName, _T("-"), wxTOKEN_RET_DELIMS);
 451         wxString newFontName;
 452
 453         for(int i = 0; i < 8; i++)
 454           newFontName += tokenizer.NextToken();
 455
 456         (void) tokenizer.NextToken();
 457
 458         newFontName += wxString::Format("%d-", pointSize);
 459
 460         while(tokenizer.HasMoreTokens())
 461           newFontName += tokenizer.GetNextToken();
 462
 463         font = wxLoadFont(newFontName);
 464
 465         if(font)
 466           *xFontName = newFontName;
 467     }
 468
 469     // try to load exactly the font requested first
 470     if( !font )
 471     {
 472         font = wxLoadQueryFont( pointSize, family, style, weight,
 473                                 underlined, facename,
 474                                 info.xregistry, info.xencoding,
 475                                 xFontName );
 476     }
 477
 478     if ( !font )
 479     {
 480         // search up and down by stepsize 10
 481         int max_size = pointSize + 20 * (1 + (pointSize/180));
 482         int min_size = pointSize - 20 * (1 + (pointSize/180));
 483
 484         int i;
 485
 486         // Search for smaller size (approx.)
 487         for ( i = pointSize - 10; !font && i >= 10 && i >= min_size; i -= 10 )
 488         {
 489             font = wxLoadQueryFont(i, family, style, weight, underlined,
 490                                    facename, info.xregistry, info.xencoding,
 491                                    xFontName);
 492         }
 493
 494         // Search for larger size (approx.)
 495         for ( i = pointSize + 10; !font && i <= max_size; i += 10 )
 496         {
 497             font = wxLoadQueryFont(i, family, style, weight, underlined,
 498                                    facename, info.xregistry, info.xencoding,
 499                                    xFontName);
 500         }
 501
 502         // Try default family
 503         if ( !font && family != wxDEFAULT )
 504         {
 505             font = wxLoadQueryFont(pointSize, wxDEFAULT, style, weight,
 506                                    underlined, facename,
 507                                    info.xregistry, info.xencoding,
 508                                    xFontName );
 509         }
 510
 511         // ignore size, family, style and weight but try to find font with the
 512         // given facename and encoding
 513         if ( !font )
 514         {
 515             font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
 516                                    underlined, facename,
 517                                    info.xregistry, info.xencoding,
 518                                    xFontName);
 519
 520             // ignore family as well
 521             if ( !font )
 522             {
 523                 font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
 524                                        underlined, wxEmptyString,
 525                                        info.xregistry, info.xencoding,
 526                                        xFontName);
 527
 528                 // if it still failed, try to get the font of any size but
 529                 // with the requested encoding: this can happen if the
 530                 // encoding is only available in one size which happens to be
 531                 // different from 120
 532                 if ( !font )
 533                 {
 534                     font = wxLoadQueryFont(-1, wxDEFAULT, wxNORMAL, wxNORMAL,
 535                                            FALSE, wxEmptyString,
 536                                            info.xregistry, info.xencoding,
 537                                            xFontName);
 538
 539                     // this should never happen as we had tested for it in the
 540                     // very beginning, but if it does, do return something non
 541                     // NULL or we'd crash in wxFont code
 542                     if ( !font )
 543                     {
 544                         wxFAIL_MSG( _T("this encoding should be available!") );
 545
 546                         font = wxLoadQueryFont(-1,
 547                                                wxDEFAULT, wxNORMAL, wxNORMAL,
 548                                                FALSE, wxEmptyString,
 549                                                _T("*"), _T("*"),
 550                                                xFontName);
 551                     }
 552                 }
 553             }
 554         }
 555     }
 556
 557     return font;
 558 }
 559
 560 // ----------------------------------------------------------------------------
 561 // private functions
 562 // ----------------------------------------------------------------------------
 563
 564 // returns TRUE if there are any fonts matching this font spec
 565 static bool wxTestFontSpec(const wxString& fontspec)
 566 {
 567     // some X servers will fail to load this font because there are too many
 568     // matches so we must test explicitly for this
 569     if ( fontspec == _T("-*-*-*-*-*-*-*-*-*-*-*-*-*-*") )
 570     {
 571         return TRUE;
 572     }
 573
 574     wxNativeFont test = (wxNativeFont) g_fontHash->Get( fontspec );
 575     if (test)
 576     {
 577         return TRUE;
 578     }
 579
 580     test = wxLoadFont(fontspec);
 581     g_fontHash->Put( fontspec, (wxObject*) test );
 582
 583     if ( test )
 584     {
 585         wxFreeFont(test);
 586
 587         return TRUE;
 588     }
 589     else
 590     {
 591         return FALSE;
 592     }
 593 }
 594
 595 static wxNativeFont wxLoadQueryFont(int pointSize,
 596                                     int family,
 597                                     int style,
 598                                     int weight,
 599                                     bool WXUNUSED(underlined),
 600                                     const wxString& facename,
 601                                     const wxString& xregistry,
 602                                     const wxString& xencoding,
 603                                     wxString* xFontName)
 604 {
 605     wxString xfamily;
 606     switch (family)
 607     {
 608         case wxDECORATIVE: xfamily = wxT("lucida"); break;
 609         case wxROMAN:      xfamily = wxT("times");  break;
 610         case wxMODERN:     xfamily = wxT("courier"); break;
 611         case wxSWISS:      xfamily = wxT("helvetica"); break;
 612         case wxTELETYPE:   xfamily = wxT("lucidatypewriter"); break;
 613         case wxSCRIPT:     xfamily = wxT("utopia"); break;
 614         default:           xfamily = wxT("*");
 615     }
 616 #if wxUSE_NANOX
 617     int xweight;
 618     switch (weight)
 619     {
 620          case wxBOLD:
 621              {
 622                  xweight = MWLF_WEIGHT_BOLD;
 623                  break;
 624              }
 625         case wxLIGHT:
 626              {
 627                  xweight = MWLF_WEIGHT_LIGHT;
 628                  break;
 629              }
 630          case wxNORMAL:
 631              {
 632                  xweight = MWLF_WEIGHT_NORMAL;
 633                  break;
 634              }
 635
 636      default:
 637              {
 638                  xweight = MWLF_WEIGHT_DEFAULT;
 639                  break;
 640              }
 641     }
 642     GR_SCREEN_INFO screenInfo;
 643     GrGetScreenInfo(& screenInfo);
 644
 645     int yPixelsPerCM = screenInfo.ydpcm;
 646
 647     // A point is 1/72 of an inch.
 648     // An inch is 2.541 cm.
 649     // So pixelHeight = (pointSize / 72) (inches) * 2.541 (for cm) * yPixelsPerCM (for pixels)
 650     // In fact pointSize is 10 * the normal point size so
 651     // divide by 10.
 652
 653     int pixelHeight = (int) ( (((float)pointSize) / 720.0) * 2.541 * (float) yPixelsPerCM) ;
 654
 655     // An alternative: assume that the screen is 72 dpi.
 656     //int pixelHeight = (int) (((float)pointSize / 720.0) * 72.0) ;
 657     //int pixelHeight = (int) ((float)pointSize / 10.0) ;
 658
 659     GR_LOGFONT logFont;
 660     logFont.lfHeight = pixelHeight;
 661     logFont.lfWidth = 0;
 662     logFont.lfEscapement = 0;
 663     logFont.lfOrientation = 0;
 664     logFont.lfWeight = xweight;
 665     logFont.lfItalic = (style == wxNORMAL ? 0 : 1) ;
 666     logFont.lfUnderline = 0;
 667     logFont.lfStrikeOut = 0;
 668     logFont.lfCharSet = MWLF_CHARSET_DEFAULT; // TODO: select appropriate one
 669     logFont.lfOutPrecision = MWLF_TYPE_DEFAULT;
 670     logFont.lfClipPrecision = 0; // Not used
 671     logFont.lfRoman = (family == wxROMAN ? 1 : 0) ;
 672     logFont.lfSerif = (family == wxSWISS ? 0 : 1) ;
 673     logFont.lfSansSerif = !logFont.lfSerif ;
 674     logFont.lfModern = (family == wxMODERN ? 1 : 0) ;
 675     logFont.lfProportional = (family == wxTELETYPE ? 0 : 1) ;
 676     logFont.lfOblique = 0;
 677     logFont.lfSmallCaps = 0;
 678     logFont.lfPitch = 0; // 0 = default
 679     strcpy(logFont.lfFaceName, facename.c_str());
 680
 681     XFontStruct* fontInfo = (XFontStruct*) malloc(sizeof(XFontStruct));
 682     fontInfo->fid = GrCreateFont((GR_CHAR*) facename.c_str(), pixelHeight, & logFont);
 683     GrGetFontInfo(fontInfo->fid, & fontInfo->info);
 684     return (wxNativeFont) fontInfo;
 685
 686 #else
 687     wxString fontSpec;
 688     if (!facename.IsEmpty())
 689     {
 690         fontSpec.Printf(wxT("-*-%s-*-*-normal-*-*-*-*-*-*-*-*-*"),
 691                         facename.c_str());
 692
 693         if ( wxTestFontSpec(fontSpec) )
 694         {
 695             xfamily = facename;
 696         }
 697         //else: no such family, use default one instead
 698     }
 699
 700     wxString xstyle;
 701     switch (style)
 702     {
 703         case wxSLANT:
 704             fontSpec.Printf(wxT("-*-%s-*-o-*-*-*-*-*-*-*-*-*-*"),
 705                     xfamily.c_str());
 706             if ( wxTestFontSpec(fontSpec) )
 707             {
 708                 xstyle = wxT("o");
 709                 break;
 710             }
 711             // fall through - try wxITALIC now
 712
 713         case wxITALIC:
 714             fontSpec.Printf(wxT("-*-%s-*-i-*-*-*-*-*-*-*-*-*-*"),
 715                     xfamily.c_str());
 716             if ( wxTestFontSpec(fontSpec) )
 717             {
 718                 xstyle = wxT("i");
 719             }
 720             else if ( style == wxITALIC ) // and not wxSLANT
 721             {
 722                 // try wxSLANT
 723                 fontSpec.Printf(wxT("-*-%s-*-o-*-*-*-*-*-*-*-*-*-*"),
 724                         xfamily.c_str());
 725                 if ( wxTestFontSpec(fontSpec) )
 726                 {
 727                     xstyle = wxT("o");
 728                 }
 729                 else
 730                 {
 731                     // no italic, no slant - leave default
 732                     xstyle = wxT("*");
 733                 }
 734             }
 735             break;
 736
 737         default:
 738             wxFAIL_MSG(_T("unknown font style"));
 739             // fall back to normal
 740
 741         case wxNORMAL:
 742             xstyle = wxT("r");
 743             break;
 744     }
 745
 746     wxString xweight;
 747     switch (weight)
 748     {
 749          case wxBOLD:
 750              {
 751                   fontSpec.Printf(wxT("-*-%s-bold-*-*-*-*-*-*-*-*-*-*-*"),
 752                          xfamily.c_str());
 753                   if ( wxTestFontSpec(fontSpec) )
 754                   {
 755                        xweight = wxT("bold");
 756                        break;
 757                   }
 758                   fontSpec.Printf(wxT("-*-%s-heavy-*-*-*-*-*-*-*-*-*-*-*"),
 759                          xfamily.c_str());
 760                   if ( wxTestFontSpec(fontSpec) )
 761                   {
 762                        xweight = wxT("heavy");
 763                        break;
 764                   }
 765                   fontSpec.Printf(wxT("-*-%s-extrabold-*-*-*-*-*-*-*-*-*-*-*"),
 766                          xfamily.c_str());
 767                   if ( wxTestFontSpec(fontSpec) )
 768                   {
 769                       xweight = wxT("extrabold");
 770                       break;
 771                   }
 772                   fontSpec.Printf(wxT("-*-%s-demibold-*-*-*-*-*-*-*-*-*-*-*"),
 773                          xfamily.c_str());
 774                   if ( wxTestFontSpec(fontSpec) )
 775                   {
 776                       xweight = wxT("demibold");
 777                       break;
 778                   }
 779                   fontSpec.Printf(wxT("-*-%s-black-*-*-*-*-*-*-*-*-*-*-*"),
 780                          xfamily.c_str());
 781                   if ( wxTestFontSpec(fontSpec) )
 782                   {
 783                       xweight = wxT("black");
 784                       break;
 785                   }
 786                   fontSpec.Printf(wxT("-*-%s-ultrablack-*-*-*-*-*-*-*-*-*-*-*"),
 787                          xfamily.c_str());
 788                   if ( wxTestFontSpec(fontSpec) )
 789                   {
 790                       xweight = wxT("ultrablack");
 791                       break;
 792                   }
 793               }
 794               break;
 795         case wxLIGHT:
 796              {
 797                   fontSpec.Printf(wxT("-*-%s-light-*-*-*-*-*-*-*-*-*-*-*"),
 798                          xfamily.c_str());
 799                   if ( wxTestFontSpec(fontSpec) )
 800                   {
 801                        xweight = wxT("light");
 802                        break;
 803                   }
 804                   fontSpec.Printf(wxT("-*-%s-thin-*-*-*-*-*-*-*-*-*-*-*"),
 805                          xfamily.c_str());
 806                   if ( wxTestFontSpec(fontSpec) )
 807                   {
 808                        xweight = wxT("thin");
 809                        break;
 810                   }
 811              }
 812              break;
 813          case wxNORMAL:
 814              {
 815                   fontSpec.Printf(wxT("-*-%s-medium-*-*-*-*-*-*-*-*-*-*-*"),
 816                          xfamily.c_str());
 817                   if ( wxTestFontSpec(fontSpec) )
 818                   {
 819                        xweight = wxT("medium");
 820                        break;
 821                   }
 822                   fontSpec.Printf(wxT("-*-%s-normal-*-*-*-*-*-*-*-*-*-*-*"),
 823                          xfamily.c_str());
 824                   if ( wxTestFontSpec(fontSpec) )
 825                   {
 826                        xweight = wxT("normal");
 827                        break;
 828                   }
 829                   fontSpec.Printf(wxT("-*-%s-regular-*-*-*-*-*-*-*-*-*-*-*"),
 830                          xfamily.c_str());
 831                   if ( wxTestFontSpec(fontSpec) )
 832                   {
 833                       xweight = wxT("regular");
 834                       break;
 835                   }
 836                   xweight = wxT("*");
 837               }
 838               break;
 839         default:           xweight = wxT("*"); break;
 840     }
 841
 842     // if pointSize is -1, don't specify any
 843     wxString sizeSpec;
 844     if ( pointSize == -1 )
 845     {
 846         sizeSpec = _T('*');
 847     }
 848     else
 849     {
 850         sizeSpec.Printf(_T("%d"), pointSize);
 851     }
 852
 853     // construct the X font spec from our data
 854     fontSpec.Printf(wxT("-*-%s-%s-%s-normal-*-*-%s-*-*-*-*-%s-%s"),
 855                     xfamily.c_str(), xweight.c_str(), xstyle.c_str(),
 856                     sizeSpec.c_str(), xregistry.c_str(), xencoding.c_str());
 857
 858     if( xFontName )
 859         *xFontName = fontSpec;
 860
 861     return wxLoadFont(fontSpec);
 862 #endif
 863     // wxUSE_NANOX
 864 }
 865
 866 // ----------------------------------------------------------------------------
 867 // wxFontModule
 868 // ----------------------------------------------------------------------------
 869
 870 class wxFontModule : public wxModule
 871 {
 872 public:
 873     bool OnInit();
 874     void OnExit();
 875
 876 private:
 877     DECLARE_DYNAMIC_CLASS(wxFontModule)
 878 };
 879
 880 IMPLEMENT_DYNAMIC_CLASS(wxFontModule, wxModule)
 881
 882 bool wxFontModule::OnInit()
 883 {
 884     g_fontHash = new wxHashTable( wxKEY_STRING );
 885
 886     return TRUE;
 887 }
 888
 889 void wxFontModule::OnExit()
 890 {
 891     delete g_fontHash;
 892
 893     g_fontHash = (wxHashTable *)NULL;
 894 }