src/common/fontcmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/fontcmn.cpp
   3 // Purpose:     implementation of wxFontBase methods
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     20.09.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   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 #include "wx/font.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/dc.h"
  31     #include "wx/intl.h"
  32     #include "wx/dcscreen.h"
  33     #include "wx/log.h"
  34     #include "wx/gdicmn.h"
  35 #endif // WX_PRECOMP
  36
  37 #if defined(__WXMSW__)
  38     #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
  39     #include  "wx/msw/winundef.h"
  40 #endif
  41
  42 #include "wx/fontutil.h" // for wxNativeFontInfo
  43 #include "wx/fontmap.h"
  44 #include "wx/fontenum.h"
  45
  46 #include "wx/tokenzr.h"
  47
  48 // ============================================================================
  49 // implementation
  50 // ============================================================================
  51
  52 // ----------------------------------------------------------------------------
  53 // helper functions
  54 // ----------------------------------------------------------------------------
  55
  56 static void AdjustFontSize(wxFont& font, wxDC& dc, const wxSize& pixelSize)
  57 {
  58     int currentSize = 0;
  59     int largestGood = 0;
  60     int smallestBad = 0;
  61
  62     bool initialGoodFound = false;
  63     bool initialBadFound = false;
  64
  65     // NB: this assignment was separated from the variable definition
  66     // in order to fix a gcc v3.3.3 compiler crash
  67     currentSize = font.GetPointSize();
  68     while (currentSize > 0)
  69     {
  70         dc.SetFont(font);
  71
  72         // if currentSize (in points) results in a font that is smaller
  73         // than required by pixelSize it is considered a good size
  74         if (dc.GetCharHeight() <= pixelSize.GetHeight() &&
  75                 (!pixelSize.GetWidth() ||
  76                  dc.GetCharWidth() <= pixelSize.GetWidth()))
  77         {
  78             largestGood = currentSize;
  79             initialGoodFound = true;
  80         }
  81         else
  82         {
  83             smallestBad = currentSize;
  84             initialBadFound = true;
  85         }
  86         if (!initialGoodFound)
  87         {
  88             currentSize /= 2;
  89         }
  90         else if (!initialBadFound)
  91         {
  92             currentSize *= 2;
  93         }
  94         else
  95         {
  96             int distance = smallestBad - largestGood;
  97             if (distance == 1)
  98                 break;
  99
 100             currentSize = largestGood + distance / 2;
 101         }
 102
 103         font.SetPointSize(currentSize);
 104     }
 105
 106     if (currentSize != largestGood)
 107         font.SetPointSize(largestGood);
 108 }
 109
 110 // ----------------------------------------------------------------------------
 111 // wxFontBase
 112 // ----------------------------------------------------------------------------
 113
 114 wxFontEncoding wxFontBase::ms_encodingDefault = wxFONTENCODING_SYSTEM;
 115
 116 /* static */
 117 void wxFontBase::SetDefaultEncoding(wxFontEncoding encoding)
 118 {
 119     // GetDefaultEncoding() should return something != wxFONTENCODING_DEFAULT
 120     // and, besides, using this value here doesn't make any sense
 121     wxCHECK_RET( encoding != wxFONTENCODING_DEFAULT,
 122                  _T("can't set default encoding to wxFONTENCODING_DEFAULT") );
 123
 124     ms_encodingDefault = encoding;
 125 }
 126
 127 wxFontBase::~wxFontBase()
 128 {
 129     // this destructor is required for Darwin
 130 }
 131
 132 /* static */
 133 wxFont *wxFontBase::New(int size,
 134                         int family,
 135                         int style,
 136                         int weight,
 137                         bool underlined,
 138                         const wxString& face,
 139                         wxFontEncoding encoding)
 140 {
 141     return new wxFont(size, family, style, weight, underlined, face, encoding);
 142 }
 143
 144 static inline int flags2Style(int flags)
 145 {
 146     return flags & wxFONTFLAG_ITALIC
 147                     ? wxFONTSTYLE_ITALIC
 148                     : flags & wxFONTFLAG_SLANT
 149                         ? wxFONTSTYLE_SLANT
 150                         : wxFONTSTYLE_NORMAL;
 151 }
 152
 153 static inline int flags2Weight(int flags)
 154 {
 155     return flags & wxFONTFLAG_LIGHT
 156                     ? wxFONTWEIGHT_LIGHT
 157                     : flags & wxFONTFLAG_BOLD
 158                         ? wxFONTWEIGHT_BOLD
 159                         : wxFONTWEIGHT_NORMAL;
 160 }
 161
 162 static inline bool flags2Underlined(int flags)
 163 {
 164     return (flags & wxFONTFLAG_UNDERLINED) != 0;
 165 }
 166
 167 /* static */
 168 wxFont *wxFontBase::New(int pointSize,
 169                         wxFontFamily family,
 170                         int flags,
 171                         const wxString& face,
 172                         wxFontEncoding encoding)
 173 {
 174     return New(pointSize, family, flags2Style(flags), flags2Weight(flags),
 175                flags2Underlined(flags), face, encoding);
 176 }
 177
 178 /* static */
 179 wxFont *wxFontBase::New(const wxSize& pixelSize,
 180                         int family,
 181                         int style,
 182                         int weight,
 183                         bool underlined,
 184                         const wxString& face,
 185                         wxFontEncoding encoding)
 186 {
 187 #if defined(__WXMSW__)
 188     return new wxFont(pixelSize, family, style, weight, underlined,
 189                       face, encoding);
 190 #else
 191     wxFont *self = New(10, family, style, weight, underlined, face, encoding);
 192     wxScreenDC dc;
 193     AdjustFontSize(*(wxFont *)self, dc, pixelSize);
 194     return self;
 195 #endif
 196 }
 197
 198 /* static */
 199 wxFont *wxFontBase::New(const wxSize& pixelSize,
 200                         wxFontFamily family,
 201                         int flags,
 202                         const wxString& face,
 203                         wxFontEncoding encoding)
 204 {
 205     return New(pixelSize, family, flags2Style(flags), flags2Weight(flags),
 206                flags2Underlined(flags), face, encoding);
 207 }
 208
 209 wxSize wxFontBase::GetPixelSize() const
 210 {
 211     wxScreenDC dc;
 212     dc.SetFont(*(wxFont *)this);
 213     return wxSize(dc.GetCharWidth(), dc.GetCharHeight());
 214 }
 215
 216 bool wxFontBase::IsUsingSizeInPixels() const
 217 {
 218     return false;
 219 }
 220
 221 void wxFontBase::SetPixelSize( const wxSize& pixelSize )
 222 {
 223     wxScreenDC dc;
 224     AdjustFontSize(*(wxFont *)this, dc, pixelSize);
 225 }
 226
 227 /* static */
 228 wxFont *wxFontBase::New(const wxNativeFontInfo& info)
 229 {
 230     return new wxFont(info);
 231 }
 232
 233 /* static */
 234 wxFont *wxFontBase::New(const wxString& strNativeFontDesc)
 235 {
 236     wxNativeFontInfo fontInfo;
 237     if ( !fontInfo.FromString(strNativeFontDesc) )
 238         return new wxFont(*wxNORMAL_FONT);
 239
 240     return New(fontInfo);
 241 }
 242
 243 bool wxFontBase::IsFixedWidth() const
 244 {
 245     return GetFamily() == wxFONTFAMILY_TELETYPE;
 246 }
 247
 248 void wxFontBase::DoSetNativeFontInfo(const wxNativeFontInfo& info)
 249 {
 250 #ifdef wxNO_NATIVE_FONTINFO
 251     SetPointSize(info.pointSize);
 252     SetFamily(info.family);
 253     SetStyle(info.style);
 254     SetWeight(info.weight);
 255     SetUnderlined(info.underlined);
 256     SetFaceName(info.faceName);
 257     SetEncoding(info.encoding);
 258 #else
 259     (void)info;
 260 #endif
 261 }
 262
 263 wxString wxFontBase::GetNativeFontInfoDesc() const
 264 {
 265     wxString fontDesc;
 266     const wxNativeFontInfo *fontInfo = GetNativeFontInfo();
 267     if ( fontInfo )
 268     {
 269         fontDesc = fontInfo->ToString();
 270         wxASSERT_MSG(!fontDesc.empty(), wxT("This should be a non-empty string!"));
 271     }
 272     else
 273     {
 274         wxFAIL_MSG(wxT("Derived class should have created the wxNativeFontInfo!"));
 275     }
 276
 277     return fontDesc;
 278 }
 279
 280 wxString wxFontBase::GetNativeFontInfoUserDesc() const
 281 {
 282     wxString fontDesc;
 283     const wxNativeFontInfo *fontInfo = GetNativeFontInfo();
 284     if ( fontInfo )
 285     {
 286         fontDesc = fontInfo->ToUserString();
 287         wxASSERT_MSG(!fontDesc.empty(), wxT("This should be a non-empty string!"));
 288     }
 289     else
 290     {
 291         wxFAIL_MSG(wxT("Derived class should have created the wxNativeFontInfo!"));
 292     }
 293
 294     return fontDesc;
 295 }
 296
 297 bool wxFontBase::SetNativeFontInfo(const wxString& info)
 298 {
 299     wxNativeFontInfo fontInfo;
 300     if ( !info.empty() && fontInfo.FromString(info) )
 301     {
 302         SetNativeFontInfo(fontInfo);
 303         return true;
 304     }
 305
 306     return false;
 307 }
 308
 309 bool wxFontBase::SetNativeFontInfoUserDesc(const wxString& info)
 310 {
 311     wxNativeFontInfo fontInfo;
 312     if ( !info.empty() && fontInfo.FromUserString(info) )
 313     {
 314         SetNativeFontInfo(fontInfo);
 315         return true;
 316     }
 317
 318     return false;
 319 }
 320
 321 bool wxFontBase::operator==(const wxFont& font) const
 322 {
 323     // either it is the same font, i.e. they share the same common data or they
 324     // have different ref datas but still describe the same font
 325     return IsSameAs(font) ||
 326            (
 327             Ok() == font.Ok() &&
 328             GetPointSize() == font.GetPointSize() &&
 329             // in wxGTK1 GetPixelSize() calls GetInternalFont() which uses
 330             // operator==() resulting in infinite recursion so we can't use it
 331             // in that port
 332 #if !defined(__WXGTK__) || defined(__WXGTK20__)
 333             GetPixelSize() == font.GetPixelSize() &&
 334 #endif
 335             GetFamily() == font.GetFamily() &&
 336             GetStyle() == font.GetStyle() &&
 337             GetWeight() == font.GetWeight() &&
 338             GetUnderlined() == font.GetUnderlined() &&
 339             GetFaceName().IsSameAs(font.GetFaceName(), false) &&
 340             GetEncoding() == font.GetEncoding()
 341            );
 342 }
 343
 344 wxString wxFontBase::GetFamilyString() const
 345 {
 346     wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );
 347
 348     switch ( GetFamily() )
 349     {
 350         case wxDECORATIVE:   return wxT("wxDECORATIVE");
 351         case wxROMAN:        return wxT("wxROMAN");
 352         case wxSCRIPT:       return wxT("wxSCRIPT");
 353         case wxSWISS:        return wxT("wxSWISS");
 354         case wxMODERN:       return wxT("wxMODERN");
 355         case wxTELETYPE:     return wxT("wxTELETYPE");
 356         default:             return wxT("wxDEFAULT");
 357     }
 358 }
 359
 360 wxString wxFontBase::GetStyleString() const
 361 {
 362     wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );
 363
 364     switch ( GetStyle() )
 365     {
 366         case wxNORMAL:   return wxT("wxNORMAL");
 367         case wxSLANT:    return wxT("wxSLANT");
 368         case wxITALIC:   return wxT("wxITALIC");
 369         default:         return wxT("wxDEFAULT");
 370     }
 371 }
 372
 373 wxString wxFontBase::GetWeightString() const
 374 {
 375     wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );
 376
 377     switch ( GetWeight() )
 378     {
 379         case wxNORMAL:   return wxT("wxNORMAL");
 380         case wxBOLD:     return wxT("wxBOLD");
 381         case wxLIGHT:    return wxT("wxLIGHT");
 382         default:         return wxT("wxDEFAULT");
 383     }
 384 }
 385
 386 bool wxFontBase::SetFaceName(const wxString& facename)
 387 {
 388 #if wxUSE_FONTENUM
 389     if (!wxFontEnumerator::IsValidFacename(facename))
 390     {
 391         UnRef();        // make Ok() return false
 392         return false;
 393     }
 394 #else // !wxUSE_FONTENUM
 395     wxUnusedVar(facename);
 396 #endif // wxUSE_FONTENUM/!wxUSE_FONTENUM
 397
 398     return true;
 399 }
 400
 401
 402 // ----------------------------------------------------------------------------
 403 // wxNativeFontInfo
 404 // ----------------------------------------------------------------------------
 405
 406 // Up to now, there are no native implementations of this function:
 407 void wxNativeFontInfo::SetFaceName(const wxArrayString& facenames)
 408 {
 409 #if wxUSE_FONTENUM
 410     for (size_t i=0; i < facenames.GetCount(); i++)
 411     {
 412         if (wxFontEnumerator::IsValidFacename(facenames[i]))
 413         {
 414             SetFaceName(facenames[i]);
 415             return;
 416         }
 417     }
 418
 419     // set the first valid facename we can find on this system
 420     wxString validfacename = wxFontEnumerator::GetFacenames().Item(0);
 421     wxLogTrace(wxT("font"), wxT("Falling back to '%s'"), validfacename.c_str());
 422     SetFaceName(validfacename);
 423 #else // !wxUSE_FONTENUM
 424     SetFaceName(facenames[0]);
 425 #endif // wxUSE_FONTENUM/!wxUSE_FONTENUM
 426 }
 427
 428
 429 #ifdef wxNO_NATIVE_FONTINFO
 430
 431 // These are the generic forms of FromString()/ToString.
 432 //
 433 // convert to/from the string representation: format is
 434 //      version;pointsize;family;style;weight;underlined;facename;encoding
 435
 436 bool wxNativeFontInfo::FromString(const wxString& s)
 437 {
 438     long l;
 439
 440     wxStringTokenizer tokenizer(s, _T(";"));
 441
 442     wxString token = tokenizer.GetNextToken();
 443     //
 444     //  Ignore the version for now
 445     //
 446
 447     token = tokenizer.GetNextToken();
 448     if ( !token.ToLong(&l) )
 449         return false;
 450     pointSize = (int)l;
 451
 452     token = tokenizer.GetNextToken();
 453     if ( !token.ToLong(&l) )
 454         return false;
 455     family = (wxFontFamily)l;
 456
 457     token = tokenizer.GetNextToken();
 458     if ( !token.ToLong(&l) )
 459         return false;
 460     style = (wxFontStyle)l;
 461
 462     token = tokenizer.GetNextToken();
 463     if ( !token.ToLong(&l) )
 464         return false;
 465     weight = (wxFontWeight)l;
 466
 467     token = tokenizer.GetNextToken();
 468     if ( !token.ToLong(&l) )
 469         return false;
 470     underlined = l != 0;
 471
 472     faceName = tokenizer.GetNextToken();
 473
 474 #ifndef __WXMAC__
 475     if( !faceName )
 476         return false;
 477 #endif
 478
 479     token = tokenizer.GetNextToken();
 480     if ( !token.ToLong(&l) )
 481         return false;
 482     encoding = (wxFontEncoding)l;
 483
 484     return true;
 485 }
 486
 487 wxString wxNativeFontInfo::ToString() const
 488 {
 489     wxString s;
 490
 491     s.Printf(_T("%d;%d;%d;%d;%d;%d;%s;%d"),
 492              0,                                 // version
 493              pointSize,
 494              family,
 495              (int)style,
 496              (int)weight,
 497              underlined,
 498              faceName.GetData(),
 499              (int)encoding);
 500
 501     return s;
 502 }
 503
 504 void wxNativeFontInfo::Init()
 505 {
 506     pointSize = 0;
 507     family = wxFONTFAMILY_DEFAULT;
 508     style = wxFONTSTYLE_NORMAL;
 509     weight = wxFONTWEIGHT_NORMAL;
 510     underlined = false;
 511     faceName.clear();
 512     encoding = wxFONTENCODING_DEFAULT;
 513 }
 514
 515 int wxNativeFontInfo::GetPointSize() const
 516 {
 517     return pointSize;
 518 }
 519
 520 wxFontStyle wxNativeFontInfo::GetStyle() const
 521 {
 522     return style;
 523 }
 524
 525 wxFontWeight wxNativeFontInfo::GetWeight() const
 526 {
 527     return weight;
 528 }
 529
 530 bool wxNativeFontInfo::GetUnderlined() const
 531 {
 532     return underlined;
 533 }
 534
 535 wxString wxNativeFontInfo::GetFaceName() const
 536 {
 537     return faceName;
 538 }
 539
 540 wxFontFamily wxNativeFontInfo::GetFamily() const
 541 {
 542     return family;
 543 }
 544
 545 wxFontEncoding wxNativeFontInfo::GetEncoding() const
 546 {
 547     return encoding;
 548 }
 549
 550 void wxNativeFontInfo::SetPointSize(int pointsize)
 551 {
 552     pointSize = pointsize;
 553 }
 554
 555 void wxNativeFontInfo::SetStyle(wxFontStyle style_)
 556 {
 557     style = style_;
 558 }
 559
 560 void wxNativeFontInfo::SetWeight(wxFontWeight weight_)
 561 {
 562     weight = weight_;
 563 }
 564
 565 void wxNativeFontInfo::SetUnderlined(bool underlined_)
 566 {
 567     underlined = underlined_;
 568 }
 569
 570 bool wxNativeFontInfo::SetFaceName(const wxString& facename_)
 571 {
 572     faceName = facename_;
 573     return true;
 574 }
 575
 576 void wxNativeFontInfo::SetFamily(wxFontFamily family_)
 577 {
 578     family = family_;
 579 }
 580
 581 void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding_)
 582 {
 583     encoding = encoding_;
 584 }
 585
 586 #endif // generic wxNativeFontInfo implementation
 587
 588 // conversion to/from user-readable string: this is used in the generic
 589 // versions and under MSW as well because there is no standard font description
 590 // format there anyhow (but there is a well-defined standard for X11 fonts used
 591 // by wxGTK and wxMotif)
 592
 593 #if defined(wxNO_NATIVE_FONTINFO) || defined(__WXMSW__) || defined (__WXPM__)
 594
 595 wxString wxNativeFontInfo::ToUserString() const
 596 {
 597     wxString desc;
 598
 599     // first put the adjectives, if any - this is English-centric, of course,
 600     // but what else can we do?
 601     if ( GetUnderlined() )
 602     {
 603         desc << _("underlined");
 604     }
 605
 606     switch ( GetWeight() )
 607     {
 608         default:
 609             wxFAIL_MSG( _T("unknown font weight") );
 610             // fall through
 611
 612         case wxFONTWEIGHT_NORMAL:
 613             break;
 614
 615         case wxFONTWEIGHT_LIGHT:
 616             desc << _(" light");
 617             break;
 618
 619         case wxFONTWEIGHT_BOLD:
 620             desc << _(" bold");
 621             break;
 622     }
 623
 624     switch ( GetStyle() )
 625     {
 626         default:
 627             wxFAIL_MSG( _T("unknown font style") );
 628             // fall through
 629
 630         case wxFONTSTYLE_NORMAL:
 631             break;
 632
 633             // we don't distinguish between the two for now anyhow...
 634         case wxFONTSTYLE_ITALIC:
 635         case wxFONTSTYLE_SLANT:
 636             desc << _(" italic");
 637             break;
 638     }
 639
 640     wxString face = GetFaceName();
 641     if ( !face.empty() )
 642     {
 643         desc << _T(' ') << face;
 644     }
 645
 646     int size = GetPointSize();
 647     if ( size != wxNORMAL_FONT->GetPointSize() )
 648     {
 649         desc << _T(' ') << size;
 650     }
 651
 652 #if wxUSE_FONTMAP
 653     wxFontEncoding enc = GetEncoding();
 654     if ( enc != wxFONTENCODING_DEFAULT && enc != wxFONTENCODING_SYSTEM )
 655     {
 656         desc << _T(' ') << wxFontMapper::GetEncodingName(enc);
 657     }
 658 #endif // wxUSE_FONTMAP
 659
 660     return desc.Strip(wxString::both).MakeLower();
 661 }
 662
 663 bool wxNativeFontInfo::FromUserString(const wxString& s)
 664 {
 665     // reset to the default state
 666     Init();
 667
 668     // parse a more or less free form string
 669     //
 670     // TODO: we should handle at least the quoted facenames
 671     wxStringTokenizer tokenizer(s, _T(";, "), wxTOKEN_STRTOK);
 672
 673     wxString face;
 674     unsigned long size;
 675     bool weightfound = false, pointsizefound = false;
 676 #if wxUSE_FONTMAP
 677     bool encodingfound = false;
 678 #endif
 679
 680     while ( tokenizer.HasMoreTokens() )
 681     {
 682         wxString token = tokenizer.GetNextToken();
 683
 684         // normalize it
 685         token.Trim(true).Trim(false).MakeLower();
 686
 687         // look for the known tokens
 688         if ( token == _T("underlined") || token == _("underlined") )
 689         {
 690             SetUnderlined(true);
 691         }
 692         else if ( token == _T("light") || token == _("light") )
 693         {
 694             SetWeight(wxFONTWEIGHT_LIGHT);
 695             weightfound = true;
 696         }
 697         else if ( token == _T("bold") || token == _("bold") )
 698         {
 699             SetWeight(wxFONTWEIGHT_BOLD);
 700             weightfound = true;
 701         }
 702         else if ( token == _T("italic") || token == _("italic") )
 703         {
 704             SetStyle(wxFONTSTYLE_ITALIC);
 705         }
 706         else if ( token.ToULong(&size) )
 707         {
 708             SetPointSize(size);
 709             pointsizefound = true;
 710         }
 711         else
 712         {
 713 #if wxUSE_FONTMAP
 714             // try to interpret this as an encoding
 715             wxFontEncoding encoding = wxFontMapper::Get()->CharsetToEncoding(token, false);
 716             if ( encoding != wxFONTENCODING_DEFAULT &&
 717                  encoding != wxFONTENCODING_SYSTEM )    // returned when the recognition failed
 718         {
 719             SetEncoding(encoding);
 720                 encodingfound = true;
 721         }
 722             else
 723         {
 724 #endif // wxUSE_FONTMAP
 725
 726                 // assume it is the face name
 727             if ( !face.empty() )
 728             {
 729                 face += _T(' ');
 730             }
 731
 732             face += token;
 733
 734             // skip the code which resets face below
 735             continue;
 736
 737 #if wxUSE_FONTMAP
 738         }
 739 #endif // wxUSE_FONTMAP
 740         }
 741
 742         // if we had had the facename, we shouldn't continue appending tokens
 743         // to it (i.e. "foo bold bar" shouldn't result in the facename "foo
 744         // bar")
 745         if ( !face.empty() )
 746         {
 747             // NB: the check on the facename is implemented in wxFontBase::SetFaceName
 748             //     and not in wxNativeFontInfo::SetFaceName thus we need to explicitely
 749             //     call here wxFontEnumerator::IsValidFacename
 750             if (
 751 #if wxUSE_FONTENUM
 752                     !wxFontEnumerator::IsValidFacename(face) ||
 753 #endif // wxUSE_FONTENUM
 754                     !SetFaceName(face) )
 755             {
 756                 SetFaceName(wxNORMAL_FONT->GetFaceName());
 757             }
 758
 759             face.clear();
 760         }
 761     }
 762
 763     // we might not have flushed it inside the loop
 764     if ( !face.empty() )
 765     {
 766         // NB: the check on the facename is implemented in wxFontBase::SetFaceName
 767         //     and not in wxNativeFontInfo::SetFaceName thus we need to explicitely
 768         //     call here wxFontEnumerator::IsValidFacename
 769         if (
 770 #if wxUSE_FONTENUM
 771                 !wxFontEnumerator::IsValidFacename(face) ||
 772 #endif // wxUSE_FONTENUM
 773                 !SetFaceName(face) )
 774             {
 775                 SetFaceName(wxNORMAL_FONT->GetFaceName());
 776             }
 777     }
 778
 779     // set point size to default value if size was not given
 780     if ( !pointsizefound )
 781         SetPointSize(wxNORMAL_FONT->GetPointSize());
 782
 783     // set font weight to default value if weight was not given
 784     if ( !weightfound )
 785         SetWeight(wxFONTWEIGHT_NORMAL);
 786
 787 #if wxUSE_FONTMAP
 788     // set font encoding to default value if encoding was not given
 789     if ( !encodingfound )
 790         SetEncoding(wxFONTENCODING_SYSTEM);
 791 #endif // wxUSE_FONTMAP
 792
 793     return true;
 794 }
 795
 796 #endif // generic or wxMSW or wxOS2
 797
 798
 799 // wxFont <-> wxString utilities, used by wxConfig
 800 wxString wxToString(const wxFontBase& font)
 801 {
 802     return font.IsOk() ? font.GetNativeFontInfoDesc()
 803                        : wxString();
 804 }
 805
 806 bool wxFromString(const wxString& str, wxFontBase *font)
 807 {
 808     wxCHECK_MSG( font, false, _T("NULL output parameter") );
 809
 810     if ( str.empty() )
 811     {
 812         *font = wxNullFont;
 813         return true;
 814     }
 815
 816     return font->SetNativeFontInfo(str);
 817 }
 818
 819