src/unix/fontutil.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/font.h" // wxFont enums
  29     #include "wx/encinfo.h"
  30 #endif // PCH
  31
  32 #include "wx/fontutil.h"
  33 #include "wx/fontmap.h"
  34 #include "wx/tokenzr.h"
  35 #include "wx/hash.h"
  36 #include "wx/module.h"
  37
  38 #if wxUSE_PANGO
  39
  40 #include "pango/pango.h"
  41
  42 #ifdef __WXGTK20__
  43 #include "wx/gtk/private.h"
  44 extern GtkWidget *wxGetRootWindow();
  45 #else
  46 #include "wx/x11/private.h"
  47 #endif
  48
  49 // ----------------------------------------------------------------------------
  50 // wxNativeFontInfo
  51 // ----------------------------------------------------------------------------
  52
  53 void wxNativeFontInfo::Init()
  54 {
  55     description = NULL;
  56 }
  57
  58 void
  59 wxNativeFontInfo::Init(const wxNativeFontInfo& info)
  60 {
  61     if (info.description)
  62         description = pango_font_description_copy(info.description);
  63     else
  64         description = NULL;
  65 }
  66
  67 void wxNativeFontInfo::Free()
  68 {
  69     if (description)
  70         pango_font_description_free(description);
  71 }
  72
  73 int wxNativeFontInfo::GetPointSize() const
  74 {
  75     return pango_font_description_get_size( description ) / PANGO_SCALE;
  76 }
  77
  78 wxFontStyle wxNativeFontInfo::GetStyle() const
  79 {
  80     wxFontStyle m_style = wxFONTSTYLE_NORMAL;
  81
  82     switch (pango_font_description_get_style( description ))
  83     {
  84         case PANGO_STYLE_NORMAL:
  85             m_style = wxFONTSTYLE_NORMAL;
  86             break;
  87         case PANGO_STYLE_ITALIC:
  88             m_style = wxFONTSTYLE_ITALIC;
  89             break;
  90         case PANGO_STYLE_OBLIQUE:
  91             m_style = wxFONTSTYLE_SLANT;
  92             break;
  93     }
  94
  95     return m_style;
  96 }
  97
  98 wxFontWeight wxNativeFontInfo::GetWeight() const
  99 {
 100 #if 0
 101     // We seem to currently initialize only by string.
 102     // In that case PANGO_FONT_MASK_WEIGHT is always set.
 103     if (!(pango_font_description_get_set_fields(description) & PANGO_FONT_MASK_WEIGHT))
 104         return wxFONTWEIGHT_NORMAL;
 105 #endif
 106
 107     PangoWeight pango_weight = pango_font_description_get_weight( description );
 108
 109     // Until the API can be changed the following ranges of weight values are used:
 110     // wxFONTWEIGHT_LIGHT:  100 .. 349 - range of 250
 111     // wxFONTWEIGHT_NORMAL: 350 .. 599 - range of 250
 112     // wxFONTWEIGHT_BOLD:   600 .. 900 - range of 301 (600 is "semibold" already)
 113
 114     if (pango_weight >= 600)
 115         return wxFONTWEIGHT_BOLD;
 116
 117     if (pango_weight < 350)
 118         return wxFONTWEIGHT_LIGHT;
 119
 120     return wxFONTWEIGHT_NORMAL;
 121 }
 122
 123 bool wxNativeFontInfo::GetUnderlined() const
 124 {
 125     return false;
 126 }
 127
 128 wxString wxNativeFontInfo::GetFaceName() const
 129 {
 130     wxString tmp = wxGTK_CONV_BACK( pango_font_description_get_family( description ) );
 131
 132     return tmp;
 133 }
 134
 135 wxFontFamily wxNativeFontInfo::GetFamily() const
 136 {
 137     wxFontFamily ret = wxFONTFAMILY_DEFAULT;
 138     // note: not passing -1 as the 2nd parameter to g_ascii_strdown to work
 139     // around a bug in the 64-bit glib shipped with solaris 10, -1 causes it
 140     // to try to allocate 2^32 bytes.
 141     const char *family_name = pango_font_description_get_family( description );
 142     char *family_text = g_ascii_strdown( family_name, family_name ? strlen( family_name ) : 0 );
 143     // Check for some common fonts, to salvage what we can from the current win32 centric wxFont API:
 144     if (strncmp( family_text, "monospace", 9 ) == 0)
 145         ret = wxFONTFAMILY_TELETYPE; // begins with "Monospace"
 146     else if (strncmp( family_text, "courier", 7 ) == 0)
 147         ret = wxFONTFAMILY_TELETYPE; // begins with "Courier"
 148 #if defined(__WXGTK24__) || defined(HAVE_PANGO_FONT_FAMILY_IS_MONOSPACE)
 149     else
 150 #ifdef __WXGTK24__
 151     if (!gtk_check_version(2,4,0))
 152 #endif
 153     {
 154         PangoFontFamily **families;
 155         PangoFontFamily  *family = NULL;
 156         int n_families;
 157         pango_context_list_families(
 158 #ifdef __WXGTK20__
 159                 gtk_widget_get_pango_context( wxGetRootWindow() ),
 160 #else
 161                 wxTheApp->GetPangoContext(),
 162 #endif
 163                 &families, &n_families);
 164
 165         for (int i = 0;i < n_families;++i)
 166         {
 167             if (g_ascii_strcasecmp(pango_font_family_get_name( families[i] ), pango_font_description_get_family( description )) == 0 )
 168             {
 169                 family = families[i];
 170                 break;
 171             }
 172         }
 173
 174         g_free(families);
 175
 176         // Some gtk+ systems might query for a non-existing font from wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT)
 177         // on initialization, don't assert until wxSystemSettings::GetFont is checked for this - MR
 178         // wxASSERT_MSG( family, wxT("wxNativeFontInfo::GetFamily() - No appropriate PangoFontFamily found for ::description") );
 179
 180         //BCI: Cache the wxFontFamily inside the class. Validate cache with
 181         //BCI: g_ascii_strcasecmp(pango_font_description_get_family(description), pango_font_family_get_name(family)) == 0
 182
 183         if (family != NULL && pango_font_family_is_monospace( family ))
 184             ret = wxFONTFAMILY_TELETYPE; // is deemed a monospace font by pango
 185     }
 186 #endif // gtk24 || HAVE_PANGO_FONT_FAMILY_IS_MONOSPACE
 187
 188     if (ret == wxFONTFAMILY_DEFAULT)
 189     {
 190         if (strstr( family_text, "sans" ) != NULL) // checked before serif, so that "* Sans Serif" fonts are detected correctly
 191             ret = wxFONTFAMILY_SWISS; // contains "Sans"
 192         else if (strstr( family_text, "serif" ) != NULL)
 193             ret = wxFONTFAMILY_ROMAN; // contains "Serif"
 194         else if (strncmp( family_text, "times", 5 ) == 0)
 195             ret = wxFONTFAMILY_ROMAN; // begins with "Times"
 196         else if (strncmp( family_text, "old", 3 ) == 0)
 197             ret = wxFONTFAMILY_DECORATIVE; // Begins with "Old" - "Old English", "Old Town"
 198     }
 199
 200     free(family_text);
 201     return ret;
 202 }
 203
 204 wxFontEncoding wxNativeFontInfo::GetEncoding() const
 205 {
 206     return wxFONTENCODING_SYSTEM;
 207 }
 208
 209
 210 void wxNativeFontInfo::SetPointSize(int pointsize)
 211 {
 212     pango_font_description_set_size( description, pointsize * PANGO_SCALE );
 213 }
 214
 215 void wxNativeFontInfo::SetStyle(wxFontStyle style)
 216 {
 217     switch (style)
 218     {
 219         case wxFONTSTYLE_ITALIC:
 220             pango_font_description_set_style( description, PANGO_STYLE_ITALIC );
 221             break;
 222         case wxFONTSTYLE_SLANT:
 223             pango_font_description_set_style( description, PANGO_STYLE_OBLIQUE );
 224             break;
 225         default:
 226             wxFAIL_MSG( _T("unknown font style") );
 227             // fall through
 228         case wxFONTSTYLE_NORMAL:
 229             pango_font_description_set_style( description, PANGO_STYLE_NORMAL );
 230             break;
 231     }
 232 }
 233
 234 void wxNativeFontInfo::SetWeight(wxFontWeight weight)
 235 {
 236     switch (weight)
 237     {
 238         case wxFONTWEIGHT_BOLD:
 239             pango_font_description_set_weight(description, PANGO_WEIGHT_BOLD);
 240             break;
 241         case wxFONTWEIGHT_LIGHT:
 242             pango_font_description_set_weight(description, PANGO_WEIGHT_LIGHT);
 243             break;
 244         default:
 245             wxFAIL_MSG( _T("unknown font weight") );
 246             // fall through
 247         case wxFONTWEIGHT_NORMAL:
 248             pango_font_description_set_weight(description, PANGO_WEIGHT_NORMAL);
 249     }
 250 }
 251
 252 void wxNativeFontInfo::SetUnderlined(bool WXUNUSED(underlined))
 253 {
 254     wxFAIL_MSG( _T("not implemented") );
 255 }
 256
 257 void wxNativeFontInfo::SetFaceName(const wxString& facename)
 258 {
 259     pango_font_description_set_family( description, wxGTK_CONV(facename) );
 260 }
 261
 262 void wxNativeFontInfo::SetFamily(wxFontFamily WXUNUSED(family))
 263 {
 264     wxFAIL_MSG( _T("not implemented") );
 265 }
 266
 267 void wxNativeFontInfo::SetEncoding(wxFontEncoding WXUNUSED(encoding))
 268 {
 269     wxFAIL_MSG( _T("not implemented") );
 270 }
 271
 272
 273
 274 bool wxNativeFontInfo::FromString(const wxString& s)
 275 {
 276     if (description)
 277         pango_font_description_free( description );
 278
 279     description = pango_font_description_from_string( wxGTK_CONV( s ) );
 280
 281     return true;
 282 }
 283
 284 wxString wxNativeFontInfo::ToString() const
 285 {
 286     char *str = pango_font_description_to_string( description );
 287     wxString tmp = wxGTK_CONV_BACK(  str );
 288     g_free( str );
 289
 290     return tmp;
 291 }
 292
 293 bool wxNativeFontInfo::FromUserString(const wxString& s)
 294 {
 295     return FromString( s );
 296 }
 297
 298 wxString wxNativeFontInfo::ToUserString() const
 299 {
 300     return ToString();
 301 }
 302
 303 // ----------------------------------------------------------------------------
 304 // wxNativeEncodingInfo
 305 // ----------------------------------------------------------------------------
 306
 307 bool wxNativeEncodingInfo::FromString(const wxString& WXUNUSED(s))
 308 {
 309     return false;
 310 }
 311
 312 wxString wxNativeEncodingInfo::ToString() const
 313 {
 314     return wxEmptyString;
 315 }
 316
 317 bool wxTestFontEncoding(const wxNativeEncodingInfo& WXUNUSED(info))
 318 {
 319     return true;
 320 }
 321
 322 bool wxGetNativeFontEncoding(wxFontEncoding encoding,
 323                              wxNativeEncodingInfo *info)
 324 {
 325     info->facename.clear();
 326
 327     switch ( encoding )
 328     {
 329         // we *must* return true for default encodings as otherwise wxFontMapper
 330         // considers that we can't load any font and aborts with wxLogFatalError!
 331         case wxFONTENCODING_DEFAULT:
 332         case wxFONTENCODING_SYSTEM:
 333             info->encoding = wxFONTENCODING_SYSTEM;
 334             return true;
 335
 336         case wxFONTENCODING_UTF8:
 337             info->encoding = wxFONTENCODING_UTF8;
 338             return true;
 339
 340         default:
 341             // everything else must be converted to UTF-8
 342             return false;
 343     }
 344 }
 345
 346 #else // GTK+ 1.x
 347
 348 #ifdef __X__
 349     #ifdef __VMS__
 350         #pragma message disable nosimpint
 351     #endif
 352
 353     #include <X11/Xlib.h>
 354
 355     #ifdef __VMS__
 356         #pragma message enable nosimpint
 357     #endif
 358
 359     #include "wx/utils.h"       // for wxGetDisplay()
 360 #elif defined(__WXGTK__)
 361     // we have to declare struct tm to avoid problems with first forward
 362     // declaring it in C code (glib.h included from gdk.h does it) and then
 363     // defining it when time.h is included from the headers below - this is
 364     // known not to work at least with Sun CC 6.01
 365     #include <time.h>
 366
 367     #include <gdk/gdk.h>
 368 #endif
 369
 370
 371 // ----------------------------------------------------------------------------
 372 // private data
 373 // ----------------------------------------------------------------------------
 374
 375 static wxHashTable *g_fontHash = (wxHashTable*) NULL;
 376
 377 // ----------------------------------------------------------------------------
 378 // private functions
 379 // ----------------------------------------------------------------------------
 380
 381 // define the functions to create and destroy native fonts for this toolkit
 382 #ifdef __X__
 383     wxNativeFont wxLoadFont(const wxString& fontSpec)
 384     {
 385         return XLoadQueryFont((Display *)wxGetDisplay(), fontSpec);
 386     }
 387
 388     inline void wxFreeFont(wxNativeFont font)
 389     {
 390         XFreeFont((Display *)wxGetDisplay(), (XFontStruct *)font);
 391     }
 392 #elif defined(__WXGTK__)
 393     wxNativeFont wxLoadFont(const wxString& fontSpec)
 394     {
 395         // VZ: we should use gdk_fontset_load() instead of gdk_font_load()
 396         //     here to be able to display Japanese fonts correctly (at least
 397         //     this is what people report) but unfortunately doing it results
 398         //     in tons of warnings when using GTK with "normal" European
 399         //     languages and so we can't always do it and I don't know enough
 400         //     to determine when should this be done... (FIXME)
 401         return gdk_font_load( wxConvertWX2MB(fontSpec) );
 402     }
 403
 404     inline void wxFreeFont(wxNativeFont font)
 405     {
 406         gdk_font_unref(font);
 407     }
 408 #else
 409     #error "Unknown GUI toolkit"
 410 #endif
 411
 412 static bool wxTestFontSpec(const wxString& fontspec);
 413
 414 static wxNativeFont wxLoadQueryFont(int pointSize,
 415                                     int family,
 416                                     int style,
 417                                     int weight,
 418                                     bool underlined,
 419                                     const wxString& facename,
 420                                     const wxString& xregistry,
 421                                     const wxString& xencoding,
 422                                     wxString* xFontName);
 423
 424 // ============================================================================
 425 // implementation
 426 // ============================================================================
 427
 428 // ----------------------------------------------------------------------------
 429 // wxNativeEncodingInfo
 430 // ----------------------------------------------------------------------------
 431
 432 // convert to/from the string representation: format is
 433 //      encodingid;registry;encoding[;facename]
 434 bool wxNativeEncodingInfo::FromString(const wxString& s)
 435 {
 436     // use ";", not "-" because it may be part of encoding name
 437     wxStringTokenizer tokenizer(s, _T(";"));
 438
 439     wxString encid = tokenizer.GetNextToken();
 440     long enc;
 441     if ( !encid.ToLong(&enc) )
 442         return false;
 443     encoding = (wxFontEncoding)enc;
 444
 445     xregistry = tokenizer.GetNextToken();
 446     if ( !xregistry )
 447         return false;
 448
 449     xencoding = tokenizer.GetNextToken();
 450     if ( !xencoding )
 451         return false;
 452
 453     // ok even if empty
 454     facename = tokenizer.GetNextToken();
 455
 456     return true;
 457 }
 458
 459 wxString wxNativeEncodingInfo::ToString() const
 460 {
 461     wxString s;
 462     s << (long)encoding << _T(';') << xregistry << _T(';') << xencoding;
 463     if ( !facename.empty() )
 464     {
 465         s << _T(';') << facename;
 466     }
 467
 468     return s;
 469 }
 470
 471 // ----------------------------------------------------------------------------
 472 // wxNativeFontInfo
 473 // ----------------------------------------------------------------------------
 474
 475 void wxNativeFontInfo::Init()
 476 {
 477     m_isDefault = true;
 478 }
 479
 480 bool wxNativeFontInfo::FromString(const wxString& s)
 481 {
 482     wxStringTokenizer tokenizer(s, _T(";"));
 483
 484     // check the version
 485     wxString token = tokenizer.GetNextToken();
 486     if ( token != _T('0') )
 487         return false;
 488
 489     xFontName = tokenizer.GetNextToken();
 490
 491     // this should be the end
 492     if ( tokenizer.HasMoreTokens() )
 493         return false;
 494
 495     return FromXFontName(xFontName);
 496 }
 497
 498 wxString wxNativeFontInfo::ToString() const
 499 {
 500     // 0 is the version
 501     return wxString::Format(_T("%d;%s"), 0, GetXFontName().c_str());
 502 }
 503
 504 bool wxNativeFontInfo::FromUserString(const wxString& s)
 505 {
 506     return FromXFontName(s);
 507 }
 508
 509 wxString wxNativeFontInfo::ToUserString() const
 510 {
 511     return GetXFontName();
 512 }
 513
 514 bool wxNativeFontInfo::HasElements() const
 515 {
 516     // we suppose that the foundry is never empty, so if it is it means that we
 517     // had never parsed the XLFD
 518     return !fontElements[0].empty();
 519 }
 520
 521 wxString wxNativeFontInfo::GetXFontComponent(wxXLFDField field) const
 522 {
 523     wxCHECK_MSG( field < wxXLFD_MAX, wxEmptyString, _T("invalid XLFD field") );
 524
 525     if ( !HasElements() )
 526     {
 527         // const_cast
 528         if ( !((wxNativeFontInfo *)this)->FromXFontName(xFontName) )
 529             return wxEmptyString;
 530     }
 531
 532     return fontElements[field];
 533 }
 534
 535 bool wxNativeFontInfo::FromXFontName(const wxString& fontname)
 536 {
 537     // TODO: we should be able to handle the font aliases here, but how?
 538     wxStringTokenizer tokenizer(fontname, _T("-"));
 539
 540     // skip the leading, usually empty field (font name registry)
 541     if ( !tokenizer.HasMoreTokens() )
 542         return false;
 543
 544     (void)tokenizer.GetNextToken();
 545
 546     for ( size_t n = 0; n < WXSIZEOF(fontElements); n++ )
 547     {
 548         if ( !tokenizer.HasMoreTokens() )
 549         {
 550             // not enough elements in the XLFD - or maybe an alias
 551             return false;
 552         }
 553
 554         wxString field = tokenizer.GetNextToken();
 555         if ( !field.empty() && field != _T('*') )
 556         {
 557             // we're really initialized now
 558             m_isDefault = false;
 559         }
 560
 561         fontElements[n] = field;
 562     }
 563
 564     // this should be all
 565     if ( tokenizer.HasMoreTokens() )
 566         return false;
 567
 568     return true;
 569 }
 570
 571 wxString wxNativeFontInfo::GetXFontName() const
 572 {
 573     if ( xFontName.empty() )
 574     {
 575         for ( size_t n = 0; n < WXSIZEOF(fontElements); n++ )
 576         {
 577             // replace the non specified elements with '*' except for the
 578             // additional style which is usually just omitted
 579             wxString elt = fontElements[n];
 580             if ( elt.empty() && n != wxXLFD_ADDSTYLE )
 581             {
 582                 elt = _T('*');
 583             }
 584
 585             // const_cast
 586             ((wxNativeFontInfo *)this)->xFontName << _T('-') << elt;
 587         }
 588     }
 589
 590     return xFontName;
 591 }
 592
 593 void
 594 wxNativeFontInfo::SetXFontComponent(wxXLFDField field, const wxString& value)
 595 {
 596     wxCHECK_RET( field < wxXLFD_MAX, _T("invalid XLFD field") );
 597
 598     // this class should be initialized with a valid font spec first and only
 599     // then the fields may be modified!
 600     wxASSERT_MSG( !IsDefault(), _T("can't modify an uninitialized XLFD") );
 601
 602     if ( !HasElements() )
 603     {
 604         // const_cast
 605         if ( !((wxNativeFontInfo *)this)->FromXFontName(xFontName) )
 606         {
 607             wxFAIL_MSG( _T("can't set font element for invalid XLFD") );
 608
 609             return;
 610         }
 611     }
 612
 613     fontElements[field] = value;
 614
 615     // invalidate the XFLD, it doesn't correspond to the font elements any more
 616     xFontName.clear();
 617 }
 618
 619 void wxNativeFontInfo::SetXFontName(const wxString& xFontName_)
 620 {
 621     // invalidate the font elements, GetXFontComponent() will reparse the XLFD
 622     fontElements[0].clear();
 623
 624     xFontName = xFontName_;
 625
 626     m_isDefault = false;
 627 }
 628
 629 int wxNativeFontInfo::GetPointSize() const
 630 {
 631     const wxString s = GetXFontComponent(wxXLFD_POINTSIZE);
 632
 633     // return -1 to indicate that the size is unknown
 634     long l;
 635     return s.ToLong(&l) ? l : -1;
 636 }
 637
 638 wxFontStyle wxNativeFontInfo::GetStyle() const
 639 {
 640     const wxString s = GetXFontComponent(wxXLFD_SLANT);
 641
 642     if ( s.length() != 1 )
 643     {
 644         // it is really unknown but we don't have any way to return it from
 645         // here
 646         return wxFONTSTYLE_NORMAL;
 647     }
 648
 649     switch ( s[0] )
 650     {
 651         default:
 652             // again, unknown but consider normal by default
 653
 654         case _T('r'):
 655             return wxFONTSTYLE_NORMAL;
 656
 657         case _T('i'):
 658             return wxFONTSTYLE_ITALIC;
 659
 660         case _T('o'):
 661             return wxFONTSTYLE_SLANT;
 662     }
 663 }
 664
 665 wxFontWeight wxNativeFontInfo::GetWeight() const
 666 {
 667     const wxString s = GetXFontComponent(wxXLFD_WEIGHT).MakeLower();
 668     if ( s.find(_T("bold")) != wxString::npos || s == _T("black") )
 669         return wxFONTWEIGHT_BOLD;
 670     else if ( s == _T("light") )
 671         return wxFONTWEIGHT_LIGHT;
 672
 673     return wxFONTWEIGHT_NORMAL;
 674 }
 675
 676 bool wxNativeFontInfo::GetUnderlined() const
 677 {
 678     // X fonts are never underlined
 679     return false;
 680 }
 681
 682 wxString wxNativeFontInfo::GetFaceName() const
 683 {
 684     // wxWidgets facename probably more accurately corresponds to X family
 685     return GetXFontComponent(wxXLFD_FAMILY);
 686 }
 687
 688 wxFontFamily wxNativeFontInfo::GetFamily() const
 689 {
 690     // and wxWidgets family -- to X foundry, but we have to translate it to
 691     // wxFontFamily somehow...
 692     wxFAIL_MSG(_T("not implemented")); // GetXFontComponent(wxXLFD_FOUNDRY);
 693
 694     return wxFONTFAMILY_DEFAULT;
 695 }
 696
 697 wxFontEncoding wxNativeFontInfo::GetEncoding() const
 698 {
 699     // we already have the code for this but need to refactor it first
 700     wxFAIL_MSG( _T("not implemented") );
 701
 702     return wxFONTENCODING_MAX;
 703 }
 704
 705 void wxNativeFontInfo::SetPointSize(int pointsize)
 706 {
 707     SetXFontComponent(wxXLFD_POINTSIZE, wxString::Format(_T("%d"), pointsize));
 708 }
 709
 710 void wxNativeFontInfo::SetStyle(wxFontStyle style)
 711 {
 712     wxString s;
 713     switch ( style )
 714     {
 715         case wxFONTSTYLE_ITALIC:
 716             s = _T('i');
 717             break;
 718
 719         case wxFONTSTYLE_SLANT:
 720             s = _T('o');
 721             break;
 722
 723         case wxFONTSTYLE_NORMAL:
 724             s = _T('r');
 725
 726         default:
 727             wxFAIL_MSG( _T("unknown wxFontStyle in wxNativeFontInfo::SetStyle") );
 728             return;
 729     }
 730
 731     SetXFontComponent(wxXLFD_SLANT, s);
 732 }
 733
 734 void wxNativeFontInfo::SetWeight(wxFontWeight weight)
 735 {
 736     wxString s;
 737     switch ( weight )
 738     {
 739         case wxFONTWEIGHT_BOLD:
 740             s = _T("bold");
 741             break;
 742
 743         case wxFONTWEIGHT_LIGHT:
 744             s = _T("light");
 745             break;
 746
 747         case wxFONTWEIGHT_NORMAL:
 748             s = _T("medium");
 749             break;
 750
 751         default:
 752             wxFAIL_MSG( _T("unknown wxFontWeight in wxNativeFontInfo::SetWeight") );
 753             return;
 754     }
 755
 756     SetXFontComponent(wxXLFD_WEIGHT, s);
 757 }
 758
 759 void wxNativeFontInfo::SetUnderlined(bool WXUNUSED(underlined))
 760 {
 761     // can't do this under X
 762 }
 763
 764 void wxNativeFontInfo::SetFaceName(const wxString& facename)
 765 {
 766     SetXFontComponent(wxXLFD_FAMILY, facename);
 767 }
 768
 769 void wxNativeFontInfo::SetFamily(wxFontFamily WXUNUSED(family))
 770 {
 771     // wxFontFamily -> X foundry, anyone?
 772     wxFAIL_MSG( _T("not implemented") );
 773
 774     // SetXFontComponent(wxXLFD_FOUNDRY, ...);
 775 }
 776
 777 void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding)
 778 {
 779     wxNativeEncodingInfo info;
 780     if ( wxGetNativeFontEncoding(encoding, &info) )
 781     {
 782         SetXFontComponent(wxXLFD_ENCODING, info.xencoding);
 783         SetXFontComponent(wxXLFD_REGISTRY, info.xregistry);
 784     }
 785 }
 786
 787 // ----------------------------------------------------------------------------
 788 // common functions
 789 // ----------------------------------------------------------------------------
 790
 791 bool wxGetNativeFontEncoding(wxFontEncoding encoding,
 792                              wxNativeEncodingInfo *info)
 793 {
 794     wxCHECK_MSG( info, false, _T("bad pointer in wxGetNativeFontEncoding") );
 795
 796     if ( encoding == wxFONTENCODING_DEFAULT )
 797     {
 798         encoding = wxFont::GetDefaultEncoding();
 799     }
 800
 801     switch ( encoding )
 802     {
 803         case wxFONTENCODING_ISO8859_1:
 804         case wxFONTENCODING_ISO8859_2:
 805         case wxFONTENCODING_ISO8859_3:
 806         case wxFONTENCODING_ISO8859_4:
 807         case wxFONTENCODING_ISO8859_5:
 808         case wxFONTENCODING_ISO8859_6:
 809         case wxFONTENCODING_ISO8859_7:
 810         case wxFONTENCODING_ISO8859_8:
 811         case wxFONTENCODING_ISO8859_9:
 812         case wxFONTENCODING_ISO8859_10:
 813         case wxFONTENCODING_ISO8859_11:
 814         case wxFONTENCODING_ISO8859_12:
 815         case wxFONTENCODING_ISO8859_13:
 816         case wxFONTENCODING_ISO8859_14:
 817         case wxFONTENCODING_ISO8859_15:
 818             {
 819                 int cp = encoding - wxFONTENCODING_ISO8859_1 + 1;
 820                 info->xregistry = wxT("iso8859");
 821                 info->xencoding.Printf(wxT("%d"), cp);
 822             }
 823             break;
 824
 825         case wxFONTENCODING_UTF8:
 826             info->xregistry = wxT("iso10646");
 827             info->xencoding = wxT("*");
 828             break;
 829
 830         case wxFONTENCODING_GB2312:
 831             info->xregistry = wxT("GB2312");   // or the otherway round?
 832             info->xencoding = wxT("*");
 833             break;
 834
 835         case wxFONTENCODING_KOI8:
 836         case wxFONTENCODING_KOI8_U:
 837             info->xregistry = wxT("koi8");
 838
 839             // we don't make distinction between koi8-r, koi8-u and koi8-ru (so far)
 840             info->xencoding = wxT("*");
 841             break;
 842
 843         case wxFONTENCODING_CP1250:
 844         case wxFONTENCODING_CP1251:
 845         case wxFONTENCODING_CP1252:
 846         case wxFONTENCODING_CP1253:
 847         case wxFONTENCODING_CP1254:
 848         case wxFONTENCODING_CP1255:
 849         case wxFONTENCODING_CP1256:
 850         case wxFONTENCODING_CP1257:
 851             {
 852                 int cp = encoding - wxFONTENCODING_CP1250 + 1250;
 853                 info->xregistry = wxT("microsoft");
 854                 info->xencoding.Printf(wxT("cp%d"), cp);
 855             }
 856             break;
 857
 858         case wxFONTENCODING_EUC_JP:
 859         case wxFONTENCODING_SHIFT_JIS:
 860             info->xregistry = "jis*";
 861             info->xencoding = "*";
 862             break;
 863
 864         case wxFONTENCODING_SYSTEM:
 865             info->xregistry =
 866             info->xencoding = wxT("*");
 867             break;
 868
 869         default:
 870             // don't know how to translate this encoding into X fontspec
 871             return false;
 872     }
 873
 874     info->encoding = encoding;
 875
 876     return true;
 877 }
 878
 879 bool wxTestFontEncoding(const wxNativeEncodingInfo& info)
 880 {
 881     wxString fontspec;
 882     fontspec.Printf(_T("-*-%s-*-*-*-*-*-*-*-*-*-*-%s-%s"),
 883                     !info.facename ? _T("*") : info.facename.c_str(),
 884                     info.xregistry.c_str(),
 885                     info.xencoding.c_str());
 886
 887     return wxTestFontSpec(fontspec);
 888 }
 889
 890 // ----------------------------------------------------------------------------
 891 // X-specific functions
 892 // ----------------------------------------------------------------------------
 893
 894 wxNativeFont wxLoadQueryNearestFont(int pointSize,
 895                                     int family,
 896                                     int style,
 897                                     int weight,
 898                                     bool underlined,
 899                                     const wxString &facename,
 900                                     wxFontEncoding encoding,
 901                                     wxString* xFontName)
 902 {
 903     if ( encoding == wxFONTENCODING_DEFAULT )
 904     {
 905         encoding = wxFont::GetDefaultEncoding();
 906     }
 907
 908     // first determine the encoding - if the font doesn't exist at all in this
 909     // encoding, it's useless to do all other approximations (i.e. size,
 910     // family &c don't matter much)
 911     wxNativeEncodingInfo info;
 912     if ( encoding == wxFONTENCODING_SYSTEM )
 913     {
 914         // This will always work so we don't test to save time
 915         wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
 916     }
 917     else
 918     {
 919         if ( !wxGetNativeFontEncoding(encoding, &info) ||
 920              !wxTestFontEncoding(info) )
 921         {
 922 #if wxUSE_FONTMAP
 923             if ( !wxFontMapper::Get()->GetAltForEncoding(encoding, &info) )
 924 #endif // wxUSE_FONTMAP
 925             {
 926                 // unspported encoding - replace it with the default
 927                 //
 928                 // NB: we can't just return 0 from here because wxGTK code doesn't
 929                 //     check for it (i.e. it supposes that we'll always succeed),
 930                 //     so it would provoke a crash
 931                 wxGetNativeFontEncoding(wxFONTENCODING_SYSTEM, &info);
 932             }
 933         }
 934     }
 935
 936     // OK, we have the correct xregistry/xencoding in info structure
 937     wxNativeFont font = 0;
 938
 939     // if we already have the X font name, try to use it
 940     if( xFontName && !xFontName->empty() )
 941     {
 942         //
 943         //  Make sure point size is correct for scale factor.
 944         //
 945         wxStringTokenizer tokenizer(*xFontName, _T("-"), wxTOKEN_RET_DELIMS);
 946         wxString newFontName;
 947
 948         for(int i = 0; i < 8; i++)
 949           newFontName += tokenizer.NextToken();
 950
 951         (void) tokenizer.NextToken();
 952
 953         newFontName += wxString::Format(wxT("%d-"), pointSize);
 954
 955         while(tokenizer.HasMoreTokens())
 956           newFontName += tokenizer.GetNextToken();
 957
 958         font = wxLoadFont(newFontName);
 959
 960         if(font)
 961           *xFontName = newFontName;
 962     }
 963
 964     if ( !font )
 965     {
 966         // search up and down by stepsize 10
 967         int max_size = pointSize + 20 * (1 + (pointSize/180));
 968         int min_size = pointSize - 20 * (1 + (pointSize/180));
 969
 970         int i, round; // counters
 971
 972         // first round: search for equal, then for smaller and for larger size with the given weight and style
 973         int testweight = weight;
 974         int teststyle = style;
 975
 976         for ( round = 0; round < 3; round++ )
 977         {
 978             // second round: use normal weight
 979             if ( round == 1 )
 980             {
 981                 if ( testweight != wxNORMAL )
 982                 {
 983                     testweight = wxNORMAL;
 984                 }
 985                 else
 986                 {
 987                     ++round; // fall through to third round
 988                 }
 989             }
 990
 991             // third round: ... and use normal style
 992             if ( round == 2 )
 993             {
 994                 if ( teststyle != wxNORMAL )
 995                 {
 996                     teststyle = wxNORMAL;
 997                 }
 998                 else
 999                 {
1000                     break;
1001                 }
1002             }
1003             // Search for equal or smaller size (approx.)
1004             for ( i = pointSize; !font && i >= 10 && i >= min_size; i -= 10 )
1005             {
1006                 font = wxLoadQueryFont(i, family, teststyle, testweight, underlined,
1007                                    facename, info.xregistry, info.xencoding,
1008                                    xFontName);
1009             }
1010
1011             // Search for larger size (approx.)
1012             for ( i = pointSize + 10; !font && i <= max_size; i += 10 )
1013             {
1014                 font = wxLoadQueryFont(i, family, teststyle, testweight, underlined,
1015                                    facename, info.xregistry, info.xencoding,
1016                                    xFontName);
1017             }
1018         }
1019
1020         // Try default family
1021         if ( !font && family != wxDEFAULT )
1022         {
1023             font = wxLoadQueryFont(pointSize, wxDEFAULT, style, weight,
1024                                    underlined, facename,
1025                                    info.xregistry, info.xencoding,
1026                                    xFontName );
1027         }
1028
1029         // ignore size, family, style and weight but try to find font with the
1030         // given facename and encoding
1031         if ( !font )
1032         {
1033             font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
1034                                    underlined, facename,
1035                                    info.xregistry, info.xencoding,
1036                                    xFontName);
1037
1038             // ignore family as well
1039             if ( !font )
1040             {
1041                 font = wxLoadQueryFont(120, wxDEFAULT, wxNORMAL, wxNORMAL,
1042                                        underlined, wxEmptyString,
1043                                        info.xregistry, info.xencoding,
1044                                        xFontName);
1045
1046                 // if it still failed, try to get the font of any size but
1047                 // with the requested encoding: this can happen if the
1048                 // encoding is only available in one size which happens to be
1049                 // different from 120
1050                 if ( !font )
1051                 {
1052                     font = wxLoadQueryFont(-1, wxDEFAULT, wxNORMAL, wxNORMAL,
1053                                            false, wxEmptyString,
1054                                            info.xregistry, info.xencoding,
1055                                            xFontName);
1056
1057                     // this should never happen as we had tested for it in the
1058                     // very beginning, but if it does, do return something non
1059                     // NULL or we'd crash in wxFont code
1060                     if ( !font )
1061                     {
1062                         wxFAIL_MSG( _T("this encoding should be available!") );
1063
1064                         font = wxLoadQueryFont(-1,
1065                                                wxDEFAULT, wxNORMAL, wxNORMAL,
1066                                                false, wxEmptyString,
1067                                                _T("*"), _T("*"),
1068                                                xFontName);
1069                     }
1070                 }
1071             }
1072         }
1073     }
1074
1075     return font;
1076 }
1077
1078 // ----------------------------------------------------------------------------
1079 // private functions
1080 // ----------------------------------------------------------------------------
1081
1082 // returns true if there are any fonts matching this font spec
1083 static bool wxTestFontSpec(const wxString& fontspec)
1084 {
1085     // some X servers will fail to load this font because there are too many
1086     // matches so we must test explicitly for this
1087     if ( fontspec == _T("-*-*-*-*-*-*-*-*-*-*-*-*-*-*") )
1088     {
1089         return true;
1090     }
1091
1092     wxNativeFont test = (wxNativeFont) g_fontHash->Get( fontspec );
1093     if (test)
1094     {
1095         return true;
1096     }
1097
1098     test = wxLoadFont(fontspec);
1099     g_fontHash->Put( fontspec, (wxObject*) test );
1100
1101     if ( test )
1102     {
1103         wxFreeFont(test);
1104
1105         return true;
1106     }
1107     else
1108     {
1109         return false;
1110     }
1111 }
1112
1113 static wxNativeFont wxLoadQueryFont(int pointSize,
1114                                     int family,
1115                                     int style,
1116                                     int weight,
1117                                     bool WXUNUSED(underlined),
1118                                     const wxString& facename,
1119                                     const wxString& xregistry,
1120                                     const wxString& xencoding,
1121                                     wxString* xFontName)
1122 {
1123     wxString xfamily;
1124     switch (family)
1125     {
1126         case wxDECORATIVE: xfamily = wxT("lucida"); break;
1127         case wxROMAN:      xfamily = wxT("times");  break;
1128         case wxMODERN:     xfamily = wxT("courier"); break;
1129         case wxSWISS:      xfamily = wxT("helvetica"); break;
1130         case wxTELETYPE:   xfamily = wxT("lucidatypewriter"); break;
1131         case wxSCRIPT:     xfamily = wxT("utopia"); break;
1132         default:           xfamily = wxT("*");
1133     }
1134 #if wxUSE_NANOX
1135     int xweight;
1136     switch (weight)
1137     {
1138          case wxBOLD:
1139              {
1140                  xweight = MWLF_WEIGHT_BOLD;
1141                  break;
1142              }
1143         case wxLIGHT:
1144              {
1145                  xweight = MWLF_WEIGHT_LIGHT;
1146                  break;
1147              }
1148          case wxNORMAL:
1149              {
1150                  xweight = MWLF_WEIGHT_NORMAL;
1151                  break;
1152              }
1153
1154      default:
1155              {
1156                  xweight = MWLF_WEIGHT_DEFAULT;
1157                  break;
1158              }
1159     }
1160     GR_SCREEN_INFO screenInfo;
1161     GrGetScreenInfo(& screenInfo);
1162
1163     int yPixelsPerCM = screenInfo.ydpcm;
1164
1165     // A point is 1/72 of an inch.
1166     // An inch is 2.541 cm.
1167     // So pixelHeight = (pointSize / 72) (inches) * 2.541 (for cm) * yPixelsPerCM (for pixels)
1168     // In fact pointSize is 10 * the normal point size so
1169     // divide by 10.
1170
1171     int pixelHeight = (int) ( (((float)pointSize) / 720.0) * 2.541 * (float) yPixelsPerCM) ;
1172
1173     // An alternative: assume that the screen is 72 dpi.
1174     //int pixelHeight = (int) (((float)pointSize / 720.0) * 72.0) ;
1175     //int pixelHeight = (int) ((float)pointSize / 10.0) ;
1176
1177     GR_LOGFONT logFont;
1178     logFont.lfHeight = pixelHeight;
1179     logFont.lfWidth = 0;
1180     logFont.lfEscapement = 0;
1181     logFont.lfOrientation = 0;
1182     logFont.lfWeight = xweight;
1183     logFont.lfItalic = (style == wxNORMAL ? 0 : 1) ;
1184     logFont.lfUnderline = 0;
1185     logFont.lfStrikeOut = 0;
1186     logFont.lfCharSet = MWLF_CHARSET_DEFAULT; // TODO: select appropriate one
1187     logFont.lfOutPrecision = MWLF_TYPE_DEFAULT;
1188     logFont.lfClipPrecision = 0; // Not used
1189     logFont.lfRoman = (family == wxROMAN ? 1 : 0) ;
1190     logFont.lfSerif = (family == wxSWISS ? 0 : 1) ;
1191     logFont.lfSansSerif = !logFont.lfSerif ;
1192     logFont.lfModern = (family == wxMODERN ? 1 : 0) ;
1193     logFont.lfProportional = (family == wxTELETYPE ? 0 : 1) ;
1194     logFont.lfOblique = 0;
1195     logFont.lfSmallCaps = 0;
1196     logFont.lfPitch = 0; // 0 = default
1197     strcpy(logFont.lfFaceName, facename.c_str());
1198
1199     XFontStruct* fontInfo = (XFontStruct*) malloc(sizeof(XFontStruct));
1200     fontInfo->fid = GrCreateFont((GR_CHAR*) facename.c_str(), pixelHeight, & logFont);
1201     GrGetFontInfo(fontInfo->fid, & fontInfo->info);
1202     return (wxNativeFont) fontInfo;
1203
1204 #else
1205     wxString fontSpec;
1206     if (!facename.empty())
1207     {
1208         fontSpec.Printf(wxT("-*-%s-*-*-normal-*-*-*-*-*-*-*-*-*"),
1209                         facename.c_str());
1210
1211         if ( wxTestFontSpec(fontSpec) )
1212         {
1213             xfamily = facename;
1214         }
1215         //else: no such family, use default one instead
1216     }
1217
1218     wxString xstyle;
1219     switch (style)
1220     {
1221         case wxSLANT:
1222             fontSpec.Printf(wxT("-*-%s-*-o-*-*-*-*-*-*-*-*-*-*"),
1223                     xfamily.c_str());
1224             if ( wxTestFontSpec(fontSpec) )
1225             {
1226                 xstyle = wxT("o");
1227                 break;
1228             }
1229             // fall through - try wxITALIC now
1230
1231         case wxITALIC:
1232             fontSpec.Printf(wxT("-*-%s-*-i-*-*-*-*-*-*-*-*-*-*"),
1233                     xfamily.c_str());
1234             if ( wxTestFontSpec(fontSpec) )
1235             {
1236                 xstyle = wxT("i");
1237             }
1238             else if ( style == wxITALIC ) // and not wxSLANT
1239             {
1240                 // try wxSLANT
1241                 fontSpec.Printf(wxT("-*-%s-*-o-*-*-*-*-*-*-*-*-*-*"),
1242                         xfamily.c_str());
1243                 if ( wxTestFontSpec(fontSpec) )
1244                 {
1245                     xstyle = wxT("o");
1246                 }
1247                 else
1248                 {
1249                     // no italic, no slant - leave default
1250                     xstyle = wxT("*");
1251                 }
1252             }
1253             break;
1254
1255         default:
1256             wxFAIL_MSG(_T("unknown font style"));
1257             // fall back to normal
1258
1259         case wxNORMAL:
1260             xstyle = wxT("r");
1261             break;
1262     }
1263
1264     wxString xweight;
1265     switch (weight)
1266     {
1267          case wxBOLD:
1268              {
1269                   fontSpec.Printf(wxT("-*-%s-bold-*-*-*-*-*-*-*-*-*-*-*"),
1270                          xfamily.c_str());
1271                   if ( wxTestFontSpec(fontSpec) )
1272                   {
1273                        xweight = wxT("bold");
1274                        break;
1275                   }
1276                   fontSpec.Printf(wxT("-*-%s-heavy-*-*-*-*-*-*-*-*-*-*-*"),
1277                          xfamily.c_str());
1278                   if ( wxTestFontSpec(fontSpec) )
1279                   {
1280                        xweight = wxT("heavy");
1281                        break;
1282                   }
1283                   fontSpec.Printf(wxT("-*-%s-extrabold-*-*-*-*-*-*-*-*-*-*-*"),
1284                          xfamily.c_str());
1285                   if ( wxTestFontSpec(fontSpec) )
1286                   {
1287                       xweight = wxT("extrabold");
1288                       break;
1289                   }
1290                   fontSpec.Printf(wxT("-*-%s-demibold-*-*-*-*-*-*-*-*-*-*-*"),
1291                          xfamily.c_str());
1292                   if ( wxTestFontSpec(fontSpec) )
1293                   {
1294                       xweight = wxT("demibold");
1295                       break;
1296                   }
1297                   fontSpec.Printf(wxT("-*-%s-black-*-*-*-*-*-*-*-*-*-*-*"),
1298                          xfamily.c_str());
1299                   if ( wxTestFontSpec(fontSpec) )
1300                   {
1301                       xweight = wxT("black");
1302                       break;
1303                   }
1304                   fontSpec.Printf(wxT("-*-%s-ultrablack-*-*-*-*-*-*-*-*-*-*-*"),
1305                          xfamily.c_str());
1306                   if ( wxTestFontSpec(fontSpec) )
1307                   {
1308                       xweight = wxT("ultrablack");
1309                       break;
1310                   }
1311               }
1312               break;
1313         case wxLIGHT:
1314              {
1315                   fontSpec.Printf(wxT("-*-%s-light-*-*-*-*-*-*-*-*-*-*-*"),
1316                          xfamily.c_str());
1317                   if ( wxTestFontSpec(fontSpec) )
1318                   {
1319                        xweight = wxT("light");
1320                        break;
1321                   }
1322                   fontSpec.Printf(wxT("-*-%s-thin-*-*-*-*-*-*-*-*-*-*-*"),
1323                          xfamily.c_str());
1324                   if ( wxTestFontSpec(fontSpec) )
1325                   {
1326                        xweight = wxT("thin");
1327                        break;
1328                   }
1329              }
1330              break;
1331          case wxNORMAL:
1332              {
1333                   fontSpec.Printf(wxT("-*-%s-medium-*-*-*-*-*-*-*-*-*-*-*"),
1334                          xfamily.c_str());
1335                   if ( wxTestFontSpec(fontSpec) )
1336                   {
1337                        xweight = wxT("medium");
1338                        break;
1339                   }
1340                   fontSpec.Printf(wxT("-*-%s-normal-*-*-*-*-*-*-*-*-*-*-*"),
1341                          xfamily.c_str());
1342                   if ( wxTestFontSpec(fontSpec) )
1343                   {
1344                        xweight = wxT("normal");
1345                        break;
1346                   }
1347                   fontSpec.Printf(wxT("-*-%s-regular-*-*-*-*-*-*-*-*-*-*-*"),
1348                          xfamily.c_str());
1349                   if ( wxTestFontSpec(fontSpec) )
1350                   {
1351                       xweight = wxT("regular");
1352                       break;
1353                   }
1354                   xweight = wxT("*");
1355               }
1356               break;
1357         default:           xweight = wxT("*"); break;
1358     }
1359
1360     // if pointSize is -1, don't specify any
1361     wxString sizeSpec;
1362     if ( pointSize == -1 )
1363     {
1364         sizeSpec = _T('*');
1365     }
1366     else
1367     {
1368         sizeSpec.Printf(_T("%d"), pointSize);
1369     }
1370
1371     // construct the X font spec from our data
1372     fontSpec.Printf(wxT("-*-%s-%s-%s-normal-*-*-%s-*-*-*-*-%s-%s"),
1373                     xfamily.c_str(), xweight.c_str(), xstyle.c_str(),
1374                     sizeSpec.c_str(), xregistry.c_str(), xencoding.c_str());
1375
1376     if( xFontName )
1377         *xFontName = fontSpec;
1378
1379     return wxLoadFont(fontSpec);
1380 #endif
1381     // wxUSE_NANOX
1382 }
1383
1384 // ----------------------------------------------------------------------------
1385 // wxFontModule
1386 // ----------------------------------------------------------------------------
1387
1388 class wxFontModule : public wxModule
1389 {
1390 public:
1391     bool OnInit();
1392     void OnExit();
1393
1394 private:
1395     DECLARE_DYNAMIC_CLASS(wxFontModule)
1396 };
1397
1398 IMPLEMENT_DYNAMIC_CLASS(wxFontModule, wxModule)
1399
1400 bool wxFontModule::OnInit()
1401 {
1402     g_fontHash = new wxHashTable( wxKEY_STRING );
1403
1404     return true;
1405 }
1406
1407 void wxFontModule::OnExit()
1408 {
1409     delete g_fontHash;
1410
1411     g_fontHash = (wxHashTable *)NULL;
1412 }
1413
1414 #endif // GTK 2.0/1.x