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 licence
  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 #include "wx/fontutil.h"
  35 #include "wx/fontmap.h"
  36 #include "wx/tokenzr.h"
  37 #include "wx/hash.h"
  38 #include "wx/module.h"
  39
  40 #if wxUSE_PANGO
  41
  42 #include "pango/pango.h"
  43
  44 #ifdef __WXGTK20__
  45 #include "wx/gtk/private.h"
  46 #else
  47 #include "wx/x11/private.h"
  48 #endif
  49
  50 // ----------------------------------------------------------------------------
  51 // wxNativeFontInfo
  52 // ----------------------------------------------------------------------------
  53
  54 void wxNativeFontInfo::Init()
  55 {
  56     description = NULL;
  57 }
  58
  59 int wxNativeFontInfo::GetPointSize() const
  60 {
  61     return pango_font_description_get_size( description ) / PANGO_SCALE;
  62 }
  63
  64 wxFontStyle wxNativeFontInfo::GetStyle() const
  65 {
  66     wxFontStyle m_style = wxFONTSTYLE_NORMAL;
  67
  68     switch (pango_font_description_get_style( description ))
  69     {
  70         case PANGO_STYLE_NORMAL:
  71             m_style = wxFONTSTYLE_NORMAL;
  72             break;
  73         case PANGO_STYLE_ITALIC:
  74             m_style = wxFONTSTYLE_ITALIC;
  75             break;
  76         case PANGO_STYLE_OBLIQUE:
  77             m_style = wxFONTSTYLE_SLANT;
  78             break;
  79     }
  80
  81     return m_style;
  82 }
  83
  84 wxFontWeight wxNativeFontInfo::GetWeight() const
  85 {
  86     wxFontWeight m_weight = wxFONTWEIGHT_NORMAL;
  87
  88     switch (pango_font_description_get_weight( description ))
  89     {
  90         case PANGO_WEIGHT_ULTRALIGHT:
  91             m_weight = wxFONTWEIGHT_LIGHT;
  92             break;
  93         case PANGO_WEIGHT_LIGHT:
  94             m_weight = wxFONTWEIGHT_LIGHT;
  95             break;
  96         case PANGO_WEIGHT_NORMAL:
  97             m_weight = wxFONTWEIGHT_NORMAL;
  98             break;
  99         case PANGO_WEIGHT_BOLD:
 100             m_weight = wxFONTWEIGHT_BOLD;
 101             break;
 102         case PANGO_WEIGHT_ULTRABOLD:
 103             m_weight = wxFONTWEIGHT_BOLD;
 104             break;
 105         case PANGO_WEIGHT_HEAVY:
 106             m_weight = wxFONTWEIGHT_BOLD;
 107             break;
 108     }
 109
 110     return m_weight;
 111 }
 112
 113 bool wxNativeFontInfo::GetUnderlined() const
 114 {
 115     return FALSE;
 116 }
 117
 118 wxString wxNativeFontInfo::GetFaceName() const
 119 {
 120     wxString tmp = wxGTK_CONV_BACK( pango_font_description_get_family( description ) );
 121
 122     return tmp;
 123 }
 124
 125 wxFontFamily wxNativeFontInfo::GetFamily() const
 126 {
 127     return wxFONTFAMILY_SWISS;
 128 }
 129
 130 wxFontEncoding wxNativeFontInfo::GetEncoding() const
 131 {
 132     return wxFONTENCODING_SYSTEM;
 133 }
 134
 135 bool wxNativeFontInfo::FromString(const wxString& s)
 136 {
 137     if (description)
 138         pango_font_description_free( description );
 139
 140     description = pango_font_description_from_string( wxGTK_CONV( s ) );
 141
 142     return TRUE;
 143 }
 144
 145 wxString wxNativeFontInfo::ToString() const
 146 {
 147     char *str = pango_font_description_to_string( description );
 148     wxString tmp = wxGTK_CONV_BACK(  str );
 149     g_free( str );
 150
 151     return tmp;
 152 }
 153
 154 bool wxNativeFontInfo::FromUserString(const wxString& s)
 155 {
 156     return FromString( s );
 157 }
 158
 159 wxString wxNativeFontInfo::ToUserString() const
 160 {
 161     return ToString();
 162 }
 163
 164 // ----------------------------------------------------------------------------
 165 // wxNativeEncodingInfo
 166 // ----------------------------------------------------------------------------
 167
 168 bool wxNativeEncodingInfo::FromString(const wxString& s)
 169 {
 170     return FALSE;
 171 }
 172
 173 wxString wxNativeEncodingInfo::ToString() const
 174 {
 175     return wxEmptyString;
 176 }
 177
 178 bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
 179 {
 180     return TRUE;
 181 }
 182
 183 bool wxGetNativeFontEncoding(wxFontEncoding encoding,
 184                              wxNativeEncodingInfo *info)
 185 {
 186     return FALSE;
 187 }
 188
 189 #else // GTK+ 1.x
 190
 191 #ifdef __X__
 192     #ifdef __VMS__
 193         #pragma message disable nosimpint
 194     #endif
 195
 196     #include <X11/Xlib.h>
 197
 198     #ifdef __VMS__
 199         #pragma message enable nosimpint
 200     #endif
 201
 202     #include "wx/utils.h"       // for wxGetDisplay()
 203 #elif defined(__WXGTK__)
 204     // we have to declare struct tm to avoid problems with first forward
 205     // declaring it in C code (glib.h included from gdk.h does it) and then
 206     // defining it when time.h is included from the headers below - this is
 207     // known not to work at least with Sun CC 6.01
 208     #include <time.h>
 209
 210     #include <gdk/gdk.h>
 211 #endif
 212
 213
 214 // ----------------------------------------------------------------------------
 215 // private data
 216 // ----------------------------------------------------------------------------
 217
 218 static wxHashTable *g_fontHash = (wxHashTable*) NULL;
 219
 220 // ----------------------------------------------------------------------------
 221 // private functions
 222 // ----------------------------------------------------------------------------
 223
 224 // define the functions to create and destroy native fonts for this toolkit
 225 #ifdef __X__
 226     wxNativeFont wxLoadFont(const wxString& fontSpec)
 227     {
 228         return XLoadQueryFont((Display *)wxGetDisplay(), fontSpec);
 229     }
 230
 231     inline void wxFreeFont(wxNativeFont font)
 232     {
 233         XFreeFont((Display *)wxGetDisplay(), (XFontStruct *)font);
 234     }
 235 #elif defined(__WXGTK__)
 236     wxNativeFont wxLoadFont(const wxString& fontSpec)
 237     {
 238         // VZ: we should use gdk_fontset_load() instead of gdk_font_load()
 239         //     here to be able to display Japanese fonts correctly (at least
 240         //     this is what people report) but unfortunately doing it results
 241         //     in tons of warnings when using GTK with "normal" European
 242         //     languages and so we can't always do it and I don't know enough
 243         //     to determine when should this be done... (FIXME)
 244         return gdk_font_load( wxConvertWX2MB(fontSpec) );
 245     }
 246
 247     inline void wxFreeFont(wxNativeFont font)
 248     {
 249         gdk_font_unref(font);
 250     }
 251 #else
 252     #error "Unknown GUI toolkit"
 253 #endif
 254
 255 static bool wxTestFontSpec(const wxString& fontspec);
 256
 257 static wxNativeFont wxLoadQueryFont(int pointSize,
 258                                     int family,
 259                                     int style,
 260                                     int weight,
 261                                     bool underlined,
 262                                     const wxString& facename,
 263                                     const wxString& xregistry,
 264                                     const wxString& xencoding,
 265                                     wxString* xFontName);
 266
 267 // ============================================================================
 268 // implementation
 269 // ============================================================================
 270
 271 // ----------------------------------------------------------------------------
 272 // wxNativeEncodingInfo
 273 // ----------------------------------------------------------------------------
 274
 275 // convert to/from the string representation: format is
 276 //      encodingid;registry;encoding[;facename]
 277 bool wxNativeEncodingInfo::FromString(const wxString& s)
 278 {
 279     // use ";", not "-" because it may be part of encoding name
 280     wxStringTokenizer tokenizer(s, _T(";"));
 281
 282     wxString encid = tokenizer.GetNextToken();
 283     long enc;
 284     if ( !encid.ToLong(&enc) )
 285         return FALSE;
 286     encoding = (wxFontEncoding)enc;
 287
 288     xregistry = tokenizer.GetNextToken();
 289     if ( !xregistry )
 290         return FALSE;
 291
 292     xencoding = tokenizer.GetNextToken();
 293     if ( !xencoding )
 294         return FALSE;
 295
 296     // ok even if empty
 297     facename = tokenizer.GetNextToken();
 298
 299     return TRUE;
 300 }
 301
 302 wxString wxNativeEncodingInfo::ToString() const
 303 {
 304     wxString s;
 305     s << (long)encoding << _T(';') << xregistry << _T(';') << xencoding;
 306     if ( !!facename )
 307     {
 308         s << _T(';') << facename;
 309     }
 310
 311     return s;
 312 }
 313
 314 // ----------------------------------------------------------------------------
 315 // wxNativeFontInfo
 316 // ----------------------------------------------------------------------------
 317
 318 void wxNativeFontInfo::Init()
 319 {
 320     m_isDefault = TRUE;
 321 }
 322
 323 bool wxNativeFontInfo::FromString(const wxString& s)
 324 {
 325     wxStringTokenizer tokenizer(s, _T(";"));
 326
 327     // check the version
 328     wxString token = tokenizer.GetNextToken();
 329     if ( token != _T('0') )
 330         return FALSE;
 331
 332     xFontName = tokenizer.GetNextToken();
 333
 334     // this should be the end
 335     if ( tokenizer.HasMoreTokens() )
 336         return FALSE;
 337
 338     return FromXFontName(xFontName);
 339 }
 340
 341 wxString wxNativeFontInfo::ToString() const
 342 {
 343     // 0 is the version
 344     return wxString::Format(_T("%d;%s"), 0, GetXFontName().c_str());
 345 }
 346
 347 bool wxNativeFontInfo::FromUserString(const wxString& s)
 348 {
 349     return FromXFontName(s);
 350 }
 351
 352 wxString wxNativeFontInfo::ToUserString() const
 353 {
 354     return GetXFontName();
 355 }
 356
 357 bool wxNativeFontInfo::HasElements() const
 358 {
 359     // we suppose that the foundry is never empty, so if it is it means that we
 360     // had never parsed the XLFD
 361     return !fontElements[0].empty();
 362 }
 363
 364 wxString wxNativeFontInfo::GetXFontComponent(wxXLFDField field) const
 365 {
 366     wxCHECK_MSG( field < wxXLFD_MAX, _T(""), _T("invalid XLFD field") );
 367
 368     if ( !HasElements() )
 369     {
 370         // const_cast
 371         if ( !((wxNativeFontInfo *)this)->FromXFontName(xFontName) )
 372             return _T("");
 373     }
 374
 375     return fontElements[field];
 376 }
 377
 378 bool wxNativeFontInfo::FromXFontName(const wxString& fontname)
 379 {
 380     // TODO: we should be able to handle the font aliases here, but how?
 381     wxStringTokenizer tokenizer(fontname, _T("-"));
 382
 383     // skip the leading, usually empty field (font name registry)
 384     if ( !tokenizer.HasMoreTokens() )
 385         return FALSE;
 386
 387     (void)tokenizer.GetNextToken();
 388
 389     for ( size_t n = 0; n < WXSIZEOF(fontElements); n++ )
 390     {
 391         if ( !tokenizer.HasMoreTokens() )
 392         {
 393             // not enough elements in the XLFD - or maybe an alias
 394             return FALSE;
 395         }
 396
 397         wxString field = tokenizer.GetNextToken();
 398         if ( !field.empty() && field != _T('*') )
 399         {
 400             // we're really initialized now
 401             m_isDefault = FALSE;
 402         }
 403
 404         fontElements[n] = field;
 405     }
 406
 407     // this should be all
 408     if ( tokenizer.HasMoreTokens() )
 409         return FALSE;
 410
 411     return TRUE;
 412 }
 413
 414 wxString wxNativeFontInfo::GetXFontName() const
 415 {
 416     if ( xFontName.empty() )
 417     {
 418         for ( size_t n = 0; n < WXSIZEOF(fontElements); n++ )
 419         {
 420             // replace the non specified elements with '*' except for the
 421             // additional style which is usually just omitted
 422             wxString elt = fontElements[n];
 423             if ( elt.empty() && n != wxXLFD_ADDSTYLE )
 424             {
 425                 elt = _T('*');
 426             }
 427
 428             // const_cast
 429             ((wxNativeFontInfo *)this)->xFontName << _T('-') << elt;
 430         }
 431     }
 432
 433     return xFontName;
 434 }
 435
 436 void
 437 wxNativeFontInfo::SetXFontComponent(wxXLFDField field, const wxString& value)
 438 {
 439     wxCHECK_RET( field < wxXLFD_MAX, _T("invalid XLFD field") );
 440
 441     // this class should be initialized with a valid font spec first and only
 442     // then the fields may be modified!
 443     wxASSERT_MSG( !IsDefault(), _T("can't modify an uninitialized XLFD") );
 444
 445     if ( !HasElements() )
 446     {
 447         // const_cast
 448         if ( !((wxNativeFontInfo *)this)->FromXFontName(xFontName) )
 449         {
 450             wxFAIL_MSG( _T("can't set font element for invalid XLFD") );
 451
 452             return;
 453         }
 454     }
 455
 456     fontElements[field] = value;
 457
 458     // invalidate the XFLD, it doesn't correspond to the font elements any more
 459     xFontName.clear();
 460 }
 461
 462 void wxNativeFontInfo::SetXFontName(const wxString& xFontName_)
 463 {
 464     // invalidate the font elements, GetXFontComponent() will reparse the XLFD
 465     fontElements[0].clear();
 466
 467     xFontName = xFontName_;
 468
 469     m_isDefault = FALSE;
 470 }
 471
 472 int wxNativeFontInfo::GetPointSize() const
 473 {
 474     const wxString s = GetXFontComponent(wxXLFD_POINTSIZE);
 475
 476     // return -1 to indicate that the size is unknown
 477     long l;
 478     return s.ToLong(&l) ? l : -1;
 479 }
 480
 481 wxFontStyle wxNativeFontInfo::GetStyle() const
 482 {
 483     const wxString s = GetXFontComponent(wxXLFD_SLANT);
 484
 485     if ( s.length() != 1 )
 486     {
 487         // it is really unknown but we don't have any way to return it from
 488         // here
 489         return wxFONTSTYLE_NORMAL;
 490     }
 491
 492     switch ( s[0] )
 493     {
 494         default:
 495             // again, unknown but consider normal by default
 496
 497         case _T('r'):
 498             return wxFONTSTYLE_NORMAL;
 499
 500         case _T('i'):
 501             return wxFONTSTYLE_ITALIC;
 502
 503         case _T('o'):
 504             return wxFONTSTYLE_SLANT;
 505     }
 506 }
 507
 508 wxFontWeight wxNativeFontInfo::GetWeight() const
 509 {
 510     const wxString s = GetXFontComponent(wxXLFD_WEIGHT).MakeLower();
 511     if ( s.find(_T("bold")) != wxString::npos || s == _T("black") )
 512         return wxFONTWEIGHT_BOLD;
 513     else if ( s == _T("light") )
 514         return wxFONTWEIGHT_LIGHT;
 515
 516     return wxFONTWEIGHT_NORMAL;
 517 }
 518
 519 bool wxNativeFontInfo::GetUnderlined() const
 520 {
 521     // X fonts are never underlined
 522     return FALSE;
 523 }
 524
 525 wxString wxNativeFontInfo::GetFaceName() const
 526 {
 527     // wxWindows facename probably more accurately corresponds to X family
 528     return GetXFontComponent(wxXLFD_FAMILY);
 529 }
 530
 531 wxFontFamily wxNativeFontInfo::GetFamily() const
 532 {
 533     // and wxWindows family -- to X foundry, but we have to translate it to
 534     // wxFontFamily somehow...
 535     wxFAIL_MSG(_T("not implemented")); // GetXFontComponent(wxXLFD_FOUNDRY);
 536
 537     return wxFONTFAMILY_DEFAULT;
 538 }
 539
 540 wxFontEncoding wxNativeFontInfo::GetEncoding() const
 541 {
 542     // we already have the code for this but need to refactor it first
 543     wxFAIL_MSG( _T("not implemented") );
 544
 545     return wxFONTENCODING_MAX;
 546 }
 547
 548 void wxNativeFontInfo::SetPointSize(int pointsize)
 549 {
 550     SetXFontComponent(wxXLFD_POINTSIZE, wxString::Format(_T("%d"), pointsize));
 551 }
 552
 553 void wxNativeFontInfo::SetStyle(wxFontStyle style)
 554 {
 555     wxString s;
 556     switch ( style )
 557     {
 558         case wxFONTSTYLE_ITALIC:
 559             s = _T('i');
 560             break;
 561
 562         case wxFONTSTYLE_SLANT:
 563             s = _T('o');
 564             break;
 565
 566         case wxFONTSTYLE_NORMAL:
 567             s = _T('r');
 568
 569         default:
 570             wxFAIL_MSG( _T("unknown wxFontStyle in wxNativeFontInfo::SetStyle") );
 571             return;
 572     }
 573
 574     SetXFontComponent(wxXLFD_SLANT, s);
 575 }
 576
 577 void wxNativeFontInfo::SetWeight(wxFontWeight weight)
 578 {
 579     wxString s;
 580     switch ( weight )
 581     {
 582         case wxFONTWEIGHT_BOLD:
 583             s = _T("bold");
 584             break;
 585
 586         case wxFONTWEIGHT_LIGHT:
 587             s = _T("light");
 588             break;
 589
 590         case wxFONTWEIGHT_NORMAL:
 591             s = _T("medium");
 592             break;
 593
 594         default:
 595             wxFAIL_MSG( _T("unknown wxFontWeight in wxNativeFontInfo::SetWeight") );
 596             return;
 597     }
 598
 599     SetXFontComponent(wxXLFD_WEIGHT, s);
 600 }
 601
 602 void wxNativeFontInfo::SetUnderlined(bool WXUNUSED(underlined))
 603 {
 604     // can't do this under X
 605 }
 606
 607 void wxNativeFontInfo::SetFaceName(wxString facename)
 608 {
 609     SetXFontComponent(wxXLFD_FAMILY, facename);
 610 }
 611
 612 void wxNativeFontInfo::SetFamily(wxFontFamily family)
 613 {
 614     // wxFontFamily -> X foundry, anyone?
 615     wxFAIL_MSG( _T("not implemented") );
 616
 617     // SetXFontComponent(wxXLFD_FOUNDRY, ...);
 618 }
 619
 620 void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding)
 621 {
 622     wxNativeEncodingInfo info;
 623     if ( wxGetNativeFontEncoding(encoding, &info) )
 624     {
 625         SetXFontComponent(wxXLFD_ENCODING, info.xencoding);
 626         SetXFontComponent(wxXLFD_REGISTRY, info.xregistry);
 627     }
 628 }
 629
 630 // ----------------------------------------------------------------------------
 631 // common functions
 632 // ----------------------------------------------------------------------------
 633
 634 bool wxGetNativeFontEncoding(wxFontEncoding encoding,
 635                              wxNativeEncodingInfo *info)
 636 {
 637     wxCHECK_MSG( info, FALSE, _T("bad pointer in wxGetNativeFontEncoding") );
 638
 639     if ( encoding == wxFONTENCODING_DEFAULT )
 640     {
 641         encoding = wxFont::GetDefaultEncoding();
 642     }
 643
 644     switch ( encoding )
 645     {
 646         case wxFONTENCODING_ISO8859_1:
 647         case wxFONTENCODING_ISO8859_2:
 648         case wxFONTENCODING_ISO8859_3:
 649         case wxFONTENCODING_ISO8859_4:
 650         case wxFONTENCODING_ISO8859_5:
 651         case wxFONTENCODING_ISO8859_6:
 652         case wxFONTENCODING_ISO8859_7:
 653         case wxFONTENCODING_ISO8859_8:
 654         case wxFONTENCODING_ISO8859_9:
 655         case wxFONTENCODING_ISO8859_10:
 656         case wxFONTENCODING_ISO8859_11:
 657         case wxFONTENCODING_ISO8859_12:
 658         case wxFONTENCODING_ISO8859_13:
 659         case wxFONTENCODING_ISO8859_14:
 660         case wxFONTENCODING_ISO8859_15:
 661             {
 662                 int cp = encoding - wxFONTENCODING_ISO8859_1 + 1;
 663                 info->xregistry = wxT("iso8859");
 664                 info->xencoding.Printf(wxT("%d"), cp);
 665             }
 666             break;
 667
 668         case wxFONTENCODING_UTF8:
 669             info->xregistry = wxT("iso10646");
 670             info->xencoding = wxT("*");
 671             break;
 672
 673         case wxFONTENCODING_GB2312:
 674             info->xregistry = wxT("GB2312");   // or the otherway round?
 675             info->xencoding = wxT("*");
 676             break;
 677
 678         case wxFONTENCODING_KOI8:
 679             info->xregistry = wxT("koi8");
 680
 681             // we don't make distinction between koi8-r, koi8-u and koi8-ru (so far)
 682             info->xencoding = wxT("*");
 683             break;
 684
 685         case wxFONTENCODING_CP1250:
 686         case wxFONTENCODING_CP1251:
 687         case wxFONTENCODING_CP1252:
 688         case wxFONTENCODING_CP1253:
 689         case wxFONTENCODING_CP1254:
 690         case wxFONTENCODING_CP1255:
 691         case wxFONTENCODING_CP1256:
 692         case wxFONTENCODING_CP1257:
 693             {
 694                 int cp = encoding - wxFONTENCODING_CP1250 + 1250;
 695                 info->xregistry = wxT("microsoft");
 696                 info->xencoding.Printf(wxT("cp%d"), cp);
 697             }
 698             break;
 699
 700         case wxFONTENCODING_SYSTEM:
 701             info->xregistry =
 702             info->xencoding = wxT("*");
 703             break;
 704
 705         default:
 706             // don't know how to translate this encoding into X fontspec
 707             return FALSE;
 708     }
 709
 710     info->encoding = encoding;
 711
 712     return TRUE;
 713 }
 714
 715 bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
 716 {
 717     wxString fontspec;
 718     fontspec.Printf(_T("-*-%s-*-*-*-*-*-*-*-*-*-*-%s-%s"),
 719                     !info.facename ? _T("*") : info.facename.c_str(),
 720                     info.xregistry.c_str(),
 721                     info.xencoding.c_str());
 722
 723     return wxTestFontSpec(fontspec);
 724 }
 725
 726 // ----------------------------------------------------------------------------
 727 // X-specific functions
 728 // ----------------------------------------------------------------------------
 729
 730 wxNativeFont wxLoadQueryNearestFont(int pointSize,
 731                                     int family,
 732                                     int style,
 733                                     int weight,
 734                                     bool underlined,
 735                                     const wxString &facename,
 736                                     wxFontEncoding encoding,
 737                                     wxString* xFontName)
 738 {
 739     if ( encoding == wxFONTENCODING_DEFAULT )
 740     {
 741         encoding = wxFont::GetDefaultEncoding();
 742     }
 743
 744     // first determine the encoding - if the font doesn't exist at all in this
 745     // encoding, it's useless to do all other approximations (i.e. size,
 746     // family &c don't matter much)
 747     wxNativeEncodingInfo info;
 748     if ( encoding == wxFONTENCODING_SYSTEM )
 749     {
 750         // This will always work so we don't test to save time
 751         wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
 752     }
 753     else
 754     {
 755         if ( !wxGetNativeFontEncoding(encoding, &info) ||
 756              !wxTestFontEncoding(info) )
 757         {
 758 #if wxUSE_FONTMAP
 759             if ( !wxFontMapper::Get()->GetAltForEncoding(encoding, &info) )
 760 #endif // wxUSE_FONTMAP
 761             {
 762                 // unspported encoding - replace it with the default
 763                 //
 764                 // NB: we can't just return 0 from here because wxGTK code doesn't
 765                 //     check for it (i.e. it supposes that we'll always succeed),
 766                 //     so it would provoke a crash
 767                 wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
 768             }
 769         }
 770     }
 771
 772     // OK, we have the correct xregistry/xencoding in info structure
 773     wxNativeFont font = 0;
 774
 775     // if we already have the X font name, try to use it
 776     if( xFontName && !xFontName->IsEmpty() )
 777     {
 778         //
 779         //  Make sure point size is correct for scale factor.
 780         //
 781         wxStringTokenizer tokenizer(*xFontName, _T("-"), wxTOKEN_RET_DELIMS);
 782         wxString newFontName;
 783
 784         for(int i = 0; i < 8; i++)
 785           newFontName += tokenizer.NextToken();
 786
 787         (void) tokenizer.NextToken();
 788
 789         newFontName += wxString::Format(wxT("%d-"), pointSize);
 790
 791         while(tokenizer.HasMoreTokens())
 792           newFontName += tokenizer.GetNextToken();
 793
 794         font = wxLoadFont(newFontName);
 795
 796         if(font)
 797           *xFontName = newFontName;
 798     }
 799
 800     // try to load exactly the font requested first
 801     if( !font )
 802     {
 803         font = wxLoadQueryFont( pointSize, family, style, weight,
 804                                 underlined, facename,
 805                                 info.xregistry, info.xencoding,
 806                                 xFontName );
 807     }
 808
 809     if ( !font )
 810     {
 811         // search up and down by stepsize 10
 812         int max_size = pointSize + 20 * (1 + (pointSize/180));
 813         int min_size = pointSize - 20 * (1 + (pointSize/180));
 814
 815         int i;
 816
 817         // Search for smaller size (approx.)
 818         for ( i = pointSize - 10; !font && i >= 10 && i >= min_size; i -= 10 )
 819         {
 820             font = wxLoadQueryFont(i, family, style, weight, underlined,
 821                                    facename, info.xregistry, info.xencoding,
 822                                    xFontName);
 823         }
 824
 825         // Search for larger size (approx.)
 826         for ( i = pointSize + 10; !font && i <= max_size; i += 10 )
 827         {
 828             font = wxLoadQueryFont(i, family, style, weight, underlined,
 829                                    facename, info.xregistry, info.xencoding,
 830                                    xFontName);
 831         }
 832
 833         // Try default family
 834         if ( !font && family != wxDEFAULT )
 835         {
 836             font = wxLoadQueryFont(pointSize, wxDEFAULT, style, weight,
 837                                    underlined, facename,
 838                                    info.xregistry, info.xencoding,
 839                                    xFontName );
 840         }
 841
 842         // ignore size, family, style and weight but try to find font with the
 843         // given facename and encoding
 844         if ( !font )
 845         {
 846             font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
 847                                    underlined, facename,
 848                                    info.xregistry, info.xencoding,
 849                                    xFontName);
 850
 851             // ignore family as well
 852             if ( !font )
 853             {
 854                 font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
 855                                        underlined, wxEmptyString,
 856                                        info.xregistry, info.xencoding,
 857                                        xFontName);
 858
 859                 // if it still failed, try to get the font of any size but
 860                 // with the requested encoding: this can happen if the
 861                 // encoding is only available in one size which happens to be
 862                 // different from 120
 863                 if ( !font )
 864                 {
 865                     font = wxLoadQueryFont(-1, wxDEFAULT, wxNORMAL, wxNORMAL,
 866                                            FALSE, wxEmptyString,
 867                                            info.xregistry, info.xencoding,
 868                                            xFontName);
 869
 870                     // this should never happen as we had tested for it in the
 871                     // very beginning, but if it does, do return something non
 872                     // NULL or we'd crash in wxFont code
 873                     if ( !font )
 874                     {
 875                         wxFAIL_MSG( _T("this encoding should be available!") );
 876
 877                         font = wxLoadQueryFont(-1,
 878                                                wxDEFAULT, wxNORMAL, wxNORMAL,
 879                                                FALSE, wxEmptyString,
 880                                                _T("*"), _T("*"),
 881                                                xFontName);
 882                     }
 883                 }
 884             }
 885         }
 886     }
 887
 888     return font;
 889 }
 890
 891 // ----------------------------------------------------------------------------
 892 // private functions
 893 // ----------------------------------------------------------------------------
 894
 895 // returns TRUE if there are any fonts matching this font spec
 896 static bool wxTestFontSpec(const wxString& fontspec)
 897 {
 898     // some X servers will fail to load this font because there are too many
 899     // matches so we must test explicitly for this
 900     if ( fontspec == _T("-*-*-*-*-*-*-*-*-*-*-*-*-*-*") )
 901     {
 902         return TRUE;
 903     }
 904
 905     wxNativeFont test = (wxNativeFont) g_fontHash->Get( fontspec );
 906     if (test)
 907     {
 908         return TRUE;
 909     }
 910
 911     test = wxLoadFont(fontspec);
 912     g_fontHash->Put( fontspec, (wxObject*) test );
 913
 914     if ( test )
 915     {
 916         wxFreeFont(test);
 917
 918         return TRUE;
 919     }
 920     else
 921     {
 922         return FALSE;
 923     }
 924 }
 925
 926 static wxNativeFont wxLoadQueryFont(int pointSize,
 927                                     int family,
 928                                     int style,
 929                                     int weight,
 930                                     bool WXUNUSED(underlined),
 931                                     const wxString& facename,
 932                                     const wxString& xregistry,
 933                                     const wxString& xencoding,
 934                                     wxString* xFontName)
 935 {
 936     wxString xfamily;
 937     switch (family)
 938     {
 939         case wxDECORATIVE: xfamily = wxT("lucida"); break;
 940         case wxROMAN:      xfamily = wxT("times");  break;
 941         case wxMODERN:     xfamily = wxT("courier"); break;
 942         case wxSWISS:      xfamily = wxT("helvetica"); break;
 943         case wxTELETYPE:   xfamily = wxT("lucidatypewriter"); break;
 944         case wxSCRIPT:     xfamily = wxT("utopia"); break;
 945         default:           xfamily = wxT("*");
 946     }
 947 #if wxUSE_NANOX
 948     int xweight;
 949     switch (weight)
 950     {
 951          case wxBOLD:
 952              {
 953                  xweight = MWLF_WEIGHT_BOLD;
 954                  break;
 955              }
 956         case wxLIGHT:
 957              {
 958                  xweight = MWLF_WEIGHT_LIGHT;
 959                  break;
 960              }
 961          case wxNORMAL:
 962              {
 963                  xweight = MWLF_WEIGHT_NORMAL;
 964                  break;
 965              }
 966
 967      default:
 968              {
 969                  xweight = MWLF_WEIGHT_DEFAULT;
 970                  break;
 971              }
 972     }
 973     GR_SCREEN_INFO screenInfo;
 974     GrGetScreenInfo(& screenInfo);
 975
 976     int yPixelsPerCM = screenInfo.ydpcm;
 977
 978     // A point is 1/72 of an inch.
 979     // An inch is 2.541 cm.
 980     // So pixelHeight = (pointSize / 72) (inches) * 2.541 (for cm) * yPixelsPerCM (for pixels)
 981     // In fact pointSize is 10 * the normal point size so
 982     // divide by 10.
 983
 984     int pixelHeight = (int) ( (((float)pointSize) / 720.0) * 2.541 * (float) yPixelsPerCM) ;
 985
 986     // An alternative: assume that the screen is 72 dpi.
 987     //int pixelHeight = (int) (((float)pointSize / 720.0) * 72.0) ;
 988     //int pixelHeight = (int) ((float)pointSize / 10.0) ;
 989
 990     GR_LOGFONT logFont;
 991     logFont.lfHeight = pixelHeight;
 992     logFont.lfWidth = 0;
 993     logFont.lfEscapement = 0;
 994     logFont.lfOrientation = 0;
 995     logFont.lfWeight = xweight;
 996     logFont.lfItalic = (style == wxNORMAL ? 0 : 1) ;
 997     logFont.lfUnderline = 0;
 998     logFont.lfStrikeOut = 0;
 999     logFont.lfCharSet = MWLF_CHARSET_DEFAULT; // TODO: select appropriate one
1000     logFont.lfOutPrecision = MWLF_TYPE_DEFAULT;
1001     logFont.lfClipPrecision = 0; // Not used
1002     logFont.lfRoman = (family == wxROMAN ? 1 : 0) ;
1003     logFont.lfSerif = (family == wxSWISS ? 0 : 1) ;
1004     logFont.lfSansSerif = !logFont.lfSerif ;
1005     logFont.lfModern = (family == wxMODERN ? 1 : 0) ;
1006     logFont.lfProportional = (family == wxTELETYPE ? 0 : 1) ;
1007     logFont.lfOblique = 0;
1008     logFont.lfSmallCaps = 0;
1009     logFont.lfPitch = 0; // 0 = default
1010     strcpy(logFont.lfFaceName, facename.c_str());
1011
1012     XFontStruct* fontInfo = (XFontStruct*) malloc(sizeof(XFontStruct));
1013     fontInfo->fid = GrCreateFont((GR_CHAR*) facename.c_str(), pixelHeight, & logFont);
1014     GrGetFontInfo(fontInfo->fid, & fontInfo->info);
1015     return (wxNativeFont) fontInfo;
1016
1017 #else
1018     wxString fontSpec;
1019     if (!facename.IsEmpty())
1020     {
1021         fontSpec.Printf(wxT("-*-%s-*-*-normal-*-*-*-*-*-*-*-*-*"),
1022                         facename.c_str());
1023
1024         if ( wxTestFontSpec(fontSpec) )
1025         {
1026             xfamily = facename;
1027         }
1028         //else: no such family, use default one instead
1029     }
1030
1031     wxString xstyle;
1032     switch (style)
1033     {
1034         case wxSLANT:
1035             fontSpec.Printf(wxT("-*-%s-*-o-*-*-*-*-*-*-*-*-*-*"),
1036                     xfamily.c_str());
1037             if ( wxTestFontSpec(fontSpec) )
1038             {
1039                 xstyle = wxT("o");
1040                 break;
1041             }
1042             // fall through - try wxITALIC now
1043
1044         case wxITALIC:
1045             fontSpec.Printf(wxT("-*-%s-*-i-*-*-*-*-*-*-*-*-*-*"),
1046                     xfamily.c_str());
1047             if ( wxTestFontSpec(fontSpec) )
1048             {
1049                 xstyle = wxT("i");
1050             }
1051             else if ( style == wxITALIC ) // and not wxSLANT
1052             {
1053                 // try wxSLANT
1054                 fontSpec.Printf(wxT("-*-%s-*-o-*-*-*-*-*-*-*-*-*-*"),
1055                         xfamily.c_str());
1056                 if ( wxTestFontSpec(fontSpec) )
1057                 {
1058                     xstyle = wxT("o");
1059                 }
1060                 else
1061                 {
1062                     // no italic, no slant - leave default
1063                     xstyle = wxT("*");
1064                 }
1065             }
1066             break;
1067
1068         default:
1069             wxFAIL_MSG(_T("unknown font style"));
1070             // fall back to normal
1071
1072         case wxNORMAL:
1073             xstyle = wxT("r");
1074             break;
1075     }
1076
1077     wxString xweight;
1078     switch (weight)
1079     {
1080          case wxBOLD:
1081              {
1082                   fontSpec.Printf(wxT("-*-%s-bold-*-*-*-*-*-*-*-*-*-*-*"),
1083                          xfamily.c_str());
1084                   if ( wxTestFontSpec(fontSpec) )
1085                   {
1086                        xweight = wxT("bold");
1087                        break;
1088                   }
1089                   fontSpec.Printf(wxT("-*-%s-heavy-*-*-*-*-*-*-*-*-*-*-*"),
1090                          xfamily.c_str());
1091                   if ( wxTestFontSpec(fontSpec) )
1092                   {
1093                        xweight = wxT("heavy");
1094                        break;
1095                   }
1096                   fontSpec.Printf(wxT("-*-%s-extrabold-*-*-*-*-*-*-*-*-*-*-*"),
1097                          xfamily.c_str());
1098                   if ( wxTestFontSpec(fontSpec) )
1099                   {
1100                       xweight = wxT("extrabold");
1101                       break;
1102                   }
1103                   fontSpec.Printf(wxT("-*-%s-demibold-*-*-*-*-*-*-*-*-*-*-*"),
1104                          xfamily.c_str());
1105                   if ( wxTestFontSpec(fontSpec) )
1106                   {
1107                       xweight = wxT("demibold");
1108                       break;
1109                   }
1110                   fontSpec.Printf(wxT("-*-%s-black-*-*-*-*-*-*-*-*-*-*-*"),
1111                          xfamily.c_str());
1112                   if ( wxTestFontSpec(fontSpec) )
1113                   {
1114                       xweight = wxT("black");
1115                       break;
1116                   }
1117                   fontSpec.Printf(wxT("-*-%s-ultrablack-*-*-*-*-*-*-*-*-*-*-*"),
1118                          xfamily.c_str());
1119                   if ( wxTestFontSpec(fontSpec) )
1120                   {
1121                       xweight = wxT("ultrablack");
1122                       break;
1123                   }
1124               }
1125               break;
1126         case wxLIGHT:
1127              {
1128                   fontSpec.Printf(wxT("-*-%s-light-*-*-*-*-*-*-*-*-*-*-*"),
1129                          xfamily.c_str());
1130                   if ( wxTestFontSpec(fontSpec) )
1131                   {
1132                        xweight = wxT("light");
1133                        break;
1134                   }
1135                   fontSpec.Printf(wxT("-*-%s-thin-*-*-*-*-*-*-*-*-*-*-*"),
1136                          xfamily.c_str());
1137                   if ( wxTestFontSpec(fontSpec) )
1138                   {
1139                        xweight = wxT("thin");
1140                        break;
1141                   }
1142              }
1143              break;
1144          case wxNORMAL:
1145              {
1146                   fontSpec.Printf(wxT("-*-%s-medium-*-*-*-*-*-*-*-*-*-*-*"),
1147                          xfamily.c_str());
1148                   if ( wxTestFontSpec(fontSpec) )
1149                   {
1150                        xweight = wxT("medium");
1151                        break;
1152                   }
1153                   fontSpec.Printf(wxT("-*-%s-normal-*-*-*-*-*-*-*-*-*-*-*"),
1154                          xfamily.c_str());
1155                   if ( wxTestFontSpec(fontSpec) )
1156                   {
1157                        xweight = wxT("normal");
1158                        break;
1159                   }
1160                   fontSpec.Printf(wxT("-*-%s-regular-*-*-*-*-*-*-*-*-*-*-*"),
1161                          xfamily.c_str());
1162                   if ( wxTestFontSpec(fontSpec) )
1163                   {
1164                       xweight = wxT("regular");
1165                       break;
1166                   }
1167                   xweight = wxT("*");
1168               }
1169               break;
1170         default:           xweight = wxT("*"); break;
1171     }
1172
1173     // if pointSize is -1, don't specify any
1174     wxString sizeSpec;
1175     if ( pointSize == -1 )
1176     {
1177         sizeSpec = _T('*');
1178     }
1179     else
1180     {
1181         sizeSpec.Printf(_T("%d"), pointSize);
1182     }
1183
1184     // construct the X font spec from our data
1185     fontSpec.Printf(wxT("-*-%s-%s-%s-normal-*-*-%s-*-*-*-*-%s-%s"),
1186                     xfamily.c_str(), xweight.c_str(), xstyle.c_str(),
1187                     sizeSpec.c_str(), xregistry.c_str(), xencoding.c_str());
1188
1189     if( xFontName )
1190         *xFontName = fontSpec;
1191
1192     return wxLoadFont(fontSpec);
1193 #endif
1194     // wxUSE_NANOX
1195 }
1196
1197 // ----------------------------------------------------------------------------
1198 // wxFontModule
1199 // ----------------------------------------------------------------------------
1200
1201 class wxFontModule : public wxModule
1202 {
1203 public:
1204     bool OnInit();
1205     void OnExit();
1206
1207 private:
1208     DECLARE_DYNAMIC_CLASS(wxFontModule)
1209 };
1210
1211 IMPLEMENT_DYNAMIC_CLASS(wxFontModule, wxModule)
1212
1213 bool wxFontModule::OnInit()
1214 {
1215     g_fontHash = new wxHashTable( wxKEY_STRING );
1216
1217     return TRUE;
1218 }
1219
1220 void wxFontModule::OnExit()
1221 {
1222     delete g_fontHash;
1223
1224     g_fontHash = (wxHashTable *)NULL;
1225 }
1226
1227 #endif // GTK 2.0/1.x
1228