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