src/motif/font.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/font.cpp
   3 // Purpose:     wxFont class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   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 __VMS
  24 #pragma message disable nosimpint
  25 #include "wx/vms_x_fix.h"
  26 #endif
  27 #include <Xm/Xm.h>
  28 #ifdef __VMS
  29 #pragma message enable nosimpint
  30 #endif
  31
  32 #include "wx/font.h"
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/string.h"
  36     #include "wx/utils.h"       // for wxGetDisplay()
  37     #include "wx/settings.h"
  38     #include "wx/gdicmn.h"
  39 #endif
  40
  41 #include "wx/fontutil.h"    // for wxNativeFontInfo
  42 #include "wx/tokenzr.h"
  43 #include "wx/motif/private.h"
  44
  45 IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
  46
  47 // ----------------------------------------------------------------------------
  48 // private classes
  49 // ----------------------------------------------------------------------------
  50
  51 // For every wxFont, there must be a font for each display and scale requested.
  52 // So these objects are stored in wxFontRefData::m_fonts
  53 class wxXFont : public wxObject
  54 {
  55 public:
  56     wxXFont();
  57     virtual ~wxXFont();
  58
  59 #if !wxMOTIF_NEW_FONT_HANDLING
  60     WXFontStructPtr     m_fontStruct;   // XFontStruct
  61 #endif
  62 #if !wxMOTIF_USE_RENDER_TABLE
  63     WXFontList          m_fontList;     // Motif XmFontList
  64 #else // if wxMOTIF_USE_RENDER_TABLE
  65     WXRenderTable       m_renderTable;  // Motif XmRenderTable
  66     WXRendition         m_rendition;    // Motif XmRendition
  67 #endif
  68     WXDisplay*          m_display;      // XDisplay
  69     int                 m_scale;        // Scale * 100
  70 };
  71
  72 class wxFontRefData: public wxGDIRefData
  73 {
  74     friend class wxFont;
  75
  76 public:
  77     wxFontRefData(int size = wxDEFAULT,
  78                   int family = wxDEFAULT,
  79                   int style = wxDEFAULT,
  80                   int weight = wxDEFAULT,
  81                   bool underlined = false,
  82                   const wxString& faceName = wxEmptyString,
  83                   wxFontEncoding encoding = wxFONTENCODING_DEFAULT)
  84     {
  85         Init(size, family, style, weight, underlined, faceName, encoding);
  86     }
  87
  88     wxFontRefData(const wxFontRefData& data)
  89     {
  90         Init(data.m_pointSize, data.m_family, data.m_style, data.m_weight,
  91              data.m_underlined, data.m_faceName, data.m_encoding);
  92     }
  93
  94     virtual ~wxFontRefData();
  95
  96 protected:
  97     // common part of all ctors
  98     void Init(int size,
  99               int family,
 100               int style,
 101               int weight,
 102               bool underlined,
 103               const wxString& faceName,
 104               wxFontEncoding encoding);
 105
 106     // font attributes
 107     int           m_pointSize;
 108     int           m_family;
 109     int           m_style;
 110     int           m_weight;
 111     bool          m_underlined;
 112     wxString      m_faceName;
 113     wxFontEncoding m_encoding;
 114
 115     wxNativeFontInfo m_nativeFontInfo;
 116
 117     // A list of wxXFonts
 118     wxList        m_fonts;
 119 };
 120
 121 // ============================================================================
 122 // implementation
 123 // ============================================================================
 124
 125 // ----------------------------------------------------------------------------
 126 // wxXFont
 127 // ----------------------------------------------------------------------------
 128
 129 wxXFont::wxXFont()
 130 {
 131 #if !wxMOTIF_NEW_FONT_HANDLING
 132     m_fontStruct = (WXFontStructPtr) 0;
 133 #endif
 134 #if !wxMOTIF_USE_RENDER_TABLE
 135     m_fontList = (WXFontList) 0;
 136 #else // if wxMOTIF_USE_RENDER_TABLE
 137     m_renderTable = (WXRenderTable) 0;
 138     m_rendition   = (WXRendition) 0;
 139 #endif
 140     m_display = (WXDisplay*) 0;
 141     m_scale = 100;
 142 }
 143
 144 wxXFont::~wxXFont()
 145 {
 146 #if !wxMOTIF_USE_RENDER_TABLE
 147     if (m_fontList)
 148         XmFontListFree ((XmFontList) m_fontList);
 149     m_fontList = NULL;
 150 #else // if wxMOTIF_USE_RENDER_TABLE
 151     if (m_renderTable)
 152         XmRenderTableFree ((XmRenderTable) m_renderTable);
 153     m_renderTable = NULL;
 154 #endif
 155
 156     // TODO: why does freeing the font produce a segv???
 157     // Note that XFreeFont wasn't called in wxWin 1.68 either.
 158     // MBN: probably some interaction with fonts being still
 159     //      in use in some widgets...
 160     // XFontStruct* fontStruct = (XFontStruct*) m_fontStruct;
 161     //        XFreeFont((Display*) m_display, fontStruct);
 162 }
 163
 164 // ----------------------------------------------------------------------------
 165 // wxFontRefData
 166 // ----------------------------------------------------------------------------
 167
 168 void wxFontRefData::Init(int pointSize,
 169                          int family,
 170                          int style,
 171                          int weight,
 172                          bool underlined,
 173                          const wxString& faceName,
 174                          wxFontEncoding encoding)
 175 {
 176     if (family == wxDEFAULT)
 177         m_family = wxSWISS;
 178     else
 179         m_family = family;
 180
 181     m_faceName = faceName;
 182
 183     if (style == wxDEFAULT)
 184         m_style = wxNORMAL;
 185     else
 186         m_style = style;
 187
 188     if (weight == wxDEFAULT)
 189         m_weight = wxNORMAL;
 190     else
 191         m_weight = weight;
 192
 193     if (pointSize == wxDEFAULT)
 194         m_pointSize = 12;
 195     else
 196         m_pointSize = pointSize;
 197
 198     m_underlined = underlined;
 199     m_encoding = encoding;
 200 }
 201
 202 wxFontRefData::~wxFontRefData()
 203 {
 204     wxList::compatibility_iterator node = m_fonts.GetFirst();
 205     while (node)
 206     {
 207         wxXFont* f = (wxXFont*) node->GetData();
 208         delete f;
 209         node = node->GetNext();
 210     }
 211     m_fonts.Clear();
 212 }
 213
 214 #define M_FONTDATA ((wxFontRefData*)m_refData)
 215
 216 // ----------------------------------------------------------------------------
 217 // wxFont
 218 // ----------------------------------------------------------------------------
 219
 220 wxFont::wxFont(const wxNativeFontInfo& info)
 221 {
 222     (void)Create(info.GetXFontName());
 223 }
 224
 225 bool wxFont::Create(int pointSize,
 226                     int family,
 227                     int style,
 228                     int weight,
 229                     bool underlined,
 230                     const wxString& faceName,
 231                     wxFontEncoding encoding)
 232 {
 233     UnRef();
 234     m_refData = new wxFontRefData(pointSize, family, style, weight,
 235                                   underlined, faceName, encoding);
 236
 237     return true;
 238 }
 239
 240 bool wxFont::Create(const wxString& fontname, wxFontEncoding enc)
 241 {
 242     if( !fontname )
 243     {
 244         *this = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT);
 245         return true;
 246     }
 247
 248     m_refData = new wxFontRefData();
 249
 250     M_FONTDATA->m_nativeFontInfo.SetXFontName(fontname);  // X font name
 251
 252     wxString tmp;
 253
 254     wxStringTokenizer tn( fontname, wxT("-") );
 255
 256     tn.GetNextToken();                           // skip initial empty token
 257     tn.GetNextToken();                           // foundry
 258
 259
 260     M_FONTDATA->m_faceName = tn.GetNextToken();  // family
 261
 262     tmp = tn.GetNextToken().MakeUpper();         // weight
 263     if (tmp == wxT("BOLD")) M_FONTDATA->m_weight = wxBOLD;
 264     if (tmp == wxT("BLACK")) M_FONTDATA->m_weight = wxBOLD;
 265     if (tmp == wxT("EXTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 266     if (tmp == wxT("DEMIBOLD")) M_FONTDATA->m_weight = wxBOLD;
 267     if (tmp == wxT("ULTRABOLD")) M_FONTDATA->m_weight = wxBOLD;
 268
 269     if (tmp == wxT("LIGHT")) M_FONTDATA->m_weight = wxLIGHT;
 270     if (tmp == wxT("THIN")) M_FONTDATA->m_weight = wxLIGHT;
 271
 272     tmp = tn.GetNextToken().MakeUpper();        // slant
 273     if (tmp == wxT("I")) M_FONTDATA->m_style = wxITALIC;
 274     if (tmp == wxT("O")) M_FONTDATA->m_style = wxITALIC;
 275
 276     tn.GetNextToken();                           // set width
 277     tn.GetNextToken();                           // add. style
 278     tn.GetNextToken();                           // pixel size
 279
 280     tmp = tn.GetNextToken();                     // pointsize
 281     if (tmp != wxT("*"))
 282     {
 283         long num = wxStrtol (tmp.mb_str(), (wxChar **) NULL, 10);
 284         M_FONTDATA->m_pointSize = (int)(num / 10);
 285     }
 286
 287     tn.GetNextToken();                           // x-res
 288     tn.GetNextToken();                           // y-res
 289
 290     tmp = tn.GetNextToken().MakeUpper();         // spacing
 291
 292     if (tmp == wxT("M"))
 293         M_FONTDATA->m_family = wxMODERN;
 294     else if (M_FONTDATA->m_faceName == wxT("TIMES"))
 295         M_FONTDATA->m_family = wxROMAN;
 296     else if (M_FONTDATA->m_faceName == wxT("HELVETICA"))
 297         M_FONTDATA->m_family = wxSWISS;
 298     else if (M_FONTDATA->m_faceName == wxT("LUCIDATYPEWRITER"))
 299         M_FONTDATA->m_family = wxTELETYPE;
 300     else if (M_FONTDATA->m_faceName == wxT("LUCIDA"))
 301         M_FONTDATA->m_family = wxDECORATIVE;
 302     else if (M_FONTDATA->m_faceName == wxT("UTOPIA"))
 303         M_FONTDATA->m_family = wxSCRIPT;
 304
 305     tn.GetNextToken();                           // avg width
 306
 307     // deal with font encoding
 308     M_FONTDATA->m_encoding = enc;
 309     if ( M_FONTDATA->m_encoding == wxFONTENCODING_SYSTEM )
 310     {
 311         wxString registry = tn.GetNextToken().MakeUpper(),
 312                  encoding = tn.GetNextToken().MakeUpper();
 313
 314         if ( registry == _T("ISO8859") )
 315         {
 316             int cp;
 317             if ( wxSscanf(encoding, wxT("%d"), &cp) == 1 )
 318             {
 319                 M_FONTDATA->m_encoding =
 320                     (wxFontEncoding)(wxFONTENCODING_ISO8859_1 + cp - 1);
 321             }
 322         }
 323         else if ( registry == _T("MICROSOFT") )
 324         {
 325             int cp;
 326             if ( wxSscanf(encoding, wxT("cp125%d"), &cp) == 1 )
 327             {
 328                 M_FONTDATA->m_encoding =
 329                     (wxFontEncoding)(wxFONTENCODING_CP1250 + cp);
 330             }
 331         }
 332         else if ( registry == _T("KOI8") )
 333         {
 334             M_FONTDATA->m_encoding = wxFONTENCODING_KOI8;
 335         }
 336         //else: unknown encoding - may be give a warning here?
 337         else
 338             return false;
 339     }
 340     return true;
 341 }
 342
 343 wxFont::~wxFont()
 344 {
 345 }
 346
 347 wxGDIRefData *wxFont::CreateGDIRefData() const
 348 {
 349     return new wxFontRefData;
 350 }
 351
 352 wxGDIRefData *wxFont::CloneGDIRefData(const wxGDIRefData *data) const
 353 {
 354     return new wxFontRefData(*wx_static_cast(const wxFontRefData *, data));
 355 }
 356
 357 // ----------------------------------------------------------------------------
 358 // change the font attributes
 359 // ----------------------------------------------------------------------------
 360
 361 void wxFont::Unshare()
 362 {
 363     // Don't change shared data
 364     if (!m_refData)
 365     {
 366         m_refData = new wxFontRefData();
 367     }
 368     else
 369     {
 370         wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
 371         UnRef();
 372         m_refData = ref;
 373     }
 374 }
 375
 376 void wxFont::SetPointSize(int pointSize)
 377 {
 378     Unshare();
 379
 380     M_FONTDATA->m_pointSize = pointSize;
 381     M_FONTDATA->m_nativeFontInfo.GetXFontName().Clear(); // invalid now
 382 }
 383
 384 void wxFont::SetFamily(int family)
 385 {
 386     Unshare();
 387
 388     M_FONTDATA->m_family = family;
 389     M_FONTDATA->m_nativeFontInfo.GetXFontName().Clear(); // invalid now
 390 }
 391
 392 void wxFont::SetStyle(int style)
 393 {
 394     Unshare();
 395
 396     M_FONTDATA->m_style = style;
 397     M_FONTDATA->m_nativeFontInfo.GetXFontName().Clear(); // invalid now
 398 }
 399
 400 void wxFont::SetWeight(int weight)
 401 {
 402     Unshare();
 403
 404     M_FONTDATA->m_weight = weight;
 405     M_FONTDATA->m_nativeFontInfo.GetXFontName().Clear(); // invalid now
 406 }
 407
 408 bool wxFont::SetFaceName(const wxString& faceName)
 409 {
 410     Unshare();
 411
 412     M_FONTDATA->m_faceName = faceName;
 413     M_FONTDATA->m_nativeFontInfo.GetXFontName().Clear(); // invalid now
 414
 415     return wxFontBase::SetFaceName(faceName);
 416 }
 417
 418 void wxFont::SetUnderlined(bool underlined)
 419 {
 420     Unshare();
 421
 422     M_FONTDATA->m_underlined = underlined;
 423 }
 424
 425 void wxFont::SetEncoding(wxFontEncoding encoding)
 426 {
 427     Unshare();
 428
 429     M_FONTDATA->m_encoding = encoding;
 430     M_FONTDATA->m_nativeFontInfo.GetXFontName().Clear(); // invalid now
 431 }
 432
 433 void wxFont::DoSetNativeFontInfo(const wxNativeFontInfo& info)
 434 {
 435     Unshare();
 436
 437     M_FONTDATA->m_nativeFontInfo = info;
 438 }
 439
 440 // ----------------------------------------------------------------------------
 441 // query font attributes
 442 // ----------------------------------------------------------------------------
 443
 444 int wxFont::GetPointSize() const
 445 {
 446     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 447
 448     return M_FONTDATA->m_pointSize;
 449 }
 450
 451 wxString wxFont::GetFaceName() const
 452 {
 453     wxCHECK_MSG( Ok(), wxEmptyString, wxT("invalid font") );
 454
 455     return M_FONTDATA->m_faceName ;
 456 }
 457
 458 int wxFont::GetFamily() const
 459 {
 460     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 461
 462     return M_FONTDATA->m_family;
 463 }
 464
 465 int wxFont::GetStyle() const
 466 {
 467     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 468
 469     return M_FONTDATA->m_style;
 470 }
 471
 472 int wxFont::GetWeight() const
 473 {
 474     wxCHECK_MSG( Ok(), 0, wxT("invalid font") );
 475
 476     return M_FONTDATA->m_weight;
 477 }
 478
 479 bool wxFont::GetUnderlined() const
 480 {
 481     wxCHECK_MSG( Ok(), false, wxT("invalid font") );
 482
 483     return M_FONTDATA->m_underlined;
 484 }
 485
 486 wxFontEncoding wxFont::GetEncoding() const
 487 {
 488     wxCHECK_MSG( Ok(), wxFONTENCODING_DEFAULT, wxT("invalid font") );
 489
 490     return M_FONTDATA->m_encoding;
 491 }
 492
 493 const wxNativeFontInfo *wxFont::GetNativeFontInfo() const
 494 {
 495     wxCHECK_MSG( Ok(), (wxNativeFontInfo *)NULL, wxT("invalid font") );
 496
 497     if(M_FONTDATA->m_nativeFontInfo.GetXFontName().empty())
 498         GetInternalFont();
 499
 500     return &(M_FONTDATA->m_nativeFontInfo);
 501 }
 502
 503 // ----------------------------------------------------------------------------
 504 // real implementation
 505 // ----------------------------------------------------------------------------
 506
 507 // Find an existing, or create a new, XFontStruct
 508 // based on this wxFont and the given scale. Append the
 509 // font to list in the private data for future reference.
 510 wxXFont* wxFont::GetInternalFont(double scale, WXDisplay* display) const
 511 {
 512     if ( !Ok() )
 513         return (wxXFont *)NULL;
 514
 515     long intScale = long(scale * 100.0 + 0.5); // key for wxXFont
 516     int pointSize = (M_FONTDATA->m_pointSize * 10 * intScale) / 100;
 517
 518     // search existing fonts first
 519     wxList::compatibility_iterator node = M_FONTDATA->m_fonts.GetFirst();
 520     while (node)
 521     {
 522         wxXFont* f = (wxXFont*) node->GetData();
 523         if ((!display || (f->m_display == display)) && (f->m_scale == intScale))
 524             return f;
 525         node = node->GetNext();
 526     }
 527
 528     // not found, create a new one
 529     wxString xFontSpec;
 530     XFontStruct *font = (XFontStruct *)
 531                         wxLoadQueryNearestFont(pointSize,
 532                                                M_FONTDATA->m_family,
 533                                                M_FONTDATA->m_style,
 534                                                M_FONTDATA->m_weight,
 535                                                M_FONTDATA->m_underlined,
 536                                                wxT(""),
 537                                                M_FONTDATA->m_encoding,
 538                                                &xFontSpec);
 539
 540     if ( !font )
 541     {
 542         wxFAIL_MSG( wxT("Could not allocate even a default font -- something is wrong.") );
 543
 544         return (wxXFont*) NULL;
 545     }
 546
 547     wxXFont* f = new wxXFont;
 548 #if wxMOTIF_NEW_FONT_HANDLING
 549     XFreeFont( (Display*) display, font );
 550 #else
 551     f->m_fontStruct = (WXFontStructPtr)font;
 552 #endif
 553     f->m_display = ( display ? display : wxGetDisplay() );
 554     f->m_scale = intScale;
 555
 556 #if wxMOTIF_USE_RENDER_TABLE
 557     XmRendition rendition;
 558     XmRenderTable renderTable;
 559     Arg args[5];
 560     int count = 0;
 561
 562 #if wxMOTIF_NEW_FONT_HANDLING
 563     char* fontSpec = wxStrdup(xFontSpec.mb_str());
 564     XtSetArg( args[count], XmNfontName, fontSpec ); ++count;
 565     XtSetArg( args[count], XmNfontType, XmFONT_IS_FONTSET ); ++count;
 566 #else
 567     XtSetArg( args[count], XmNfont, font ); ++count;
 568 #endif
 569     XtSetArg( args[count], XmNunderlineType,
 570               GetUnderlined() ? XmSINGLE_LINE : XmNO_LINE ); ++count;
 571     rendition = XmRenditionCreate( XmGetXmDisplay( (Display*)f->m_display ),
 572                                    (XmStringTag)"",
 573                                    args, count );
 574     renderTable = XmRenderTableAddRenditions( NULL, &rendition, 1,
 575                                               XmMERGE_REPLACE );
 576
 577     f->m_renderTable = (WXRenderTable)renderTable;
 578     f->m_rendition = (WXRendition)rendition;
 579     wxASSERT( f->m_renderTable != NULL );
 580 #else // if !wxMOTIF_USE_RENDER_TABLE
 581     f->m_fontList = XmFontListCreate ((XFontStruct*) font, XmSTRING_DEFAULT_CHARSET);
 582     wxASSERT( f->m_fontList != NULL );
 583 #endif
 584
 585     M_FONTDATA->m_fonts.Append(f);
 586
 587     return f;
 588 }
 589
 590 #if !wxMOTIF_NEW_FONT_HANDLING
 591
 592 WXFontStructPtr wxFont::GetFontStruct(double scale, WXDisplay* display) const
 593 {
 594     wxXFont* f = GetInternalFont(scale, display);
 595
 596     return (f ? f->m_fontStruct : (WXFontStructPtr) 0);
 597 }
 598
 599 #endif
 600
 601 #if !wxMOTIF_USE_RENDER_TABLE
 602
 603 WXFontList wxFont::GetFontList(double scale, WXDisplay* display) const
 604 {
 605     wxXFont* f = GetInternalFont(scale, display);
 606
 607     return (f ? f->m_fontList : (WXFontList) 0);
 608 }
 609
 610 #else // if wxMOTIF_USE_RENDER_TABLE
 611
 612 WXRenderTable wxFont::GetRenderTable(WXDisplay* display) const
 613 {
 614     wxXFont* f = GetInternalFont(1.0, display);
 615
 616     return (f ? f->m_renderTable : (WXRenderTable) 0);
 617 }
 618
 619 #endif // wxMOTIF_USE_RENDER_TABLE
 620
 621 WXFontType wxFont::GetFontType(WXDisplay* display) const
 622 {
 623 #if wxMOTIF_USE_RENDER_TABLE
 624     return Ok() ? GetRenderTable(display) : NULL;
 625 #else
 626     return Ok() ? GetFontList(1.0, display) : NULL;
 627 #endif
 628 }
 629
 630 WXFontType wxFont::GetFontTypeC(WXDisplay* display) const
 631 {
 632 #if wxMOTIF_USE_RENDER_TABLE
 633     return Ok() ? GetRenderTable(display) : NULL;
 634 #else
 635     return Ok() ? XmFontListCopy( (XmFontList)GetFontList(1.0, display) ) : NULL;
 636 #endif
 637 }
 638
 639 /*static*/ WXString wxFont::GetFontTag()
 640 {
 641 #if wxMOTIF_USE_RENDER_TABLE
 642     return (WXString)XmNrenderTable;
 643 #else
 644     return (WXString)XmNfontList;
 645 #endif
 646 }
 647
 648 #if wxMOTIF_USE_RENDER_TABLE
 649
 650 WXFontSet wxFont::GetFontSet(double scale, WXDisplay* display) const
 651 {
 652     wxXFont* f = GetInternalFont(scale, display);
 653
 654     if( !f ) return (WXFontSet) 0;
 655
 656     Arg args[2];
 657     int count = 0;
 658
 659     XtSetArg( args[count], XmNfont, 0 ); ++count;
 660     XmRenditionRetrieve( (XmRendition) f->m_rendition, args, count );
 661
 662     return (WXFontSet) args[0].value;
 663 }
 664
 665 void wxGetTextExtent(WXDisplay* display, const wxFont& font, double scale,
 666                      const wxString& str,
 667                      int* width, int* height, int* ascent, int* descent)
 668 {
 669     XRectangle ink, logical;
 670     WXFontSet fset = font.GetFontSet(scale, display);
 671
 672     XmbTextExtents( (XFontSet)fset, str.mb_str(), str.length(), &ink, &logical);
 673
 674     if( width ) *width = logical.width;
 675     if( height ) *height = logical.height;
 676     if( ascent ) *ascent = -logical.y;
 677     if( descent ) *descent = logical.height + logical.y;
 678 }
 679
 680 #else // if !wxMOTIF_USE_RENDER_TABLE
 681
 682 void wxGetTextExtent(WXDisplay* display, const wxFont& font,
 683                      double scale, const wxString& str,
 684                      int* width, int* height, int* ascent, int* descent)
 685 {
 686     WXFontStructPtr pFontStruct = font.GetFontStruct(scale, display);
 687
 688     int direction, ascent2, descent2;
 689     XCharStruct overall;
 690     int slen = str.length();
 691
 692     XTextExtents((XFontStruct*) pFontStruct,
 693                  wx_const_cast(char*, (const char *)str.mb_str()), slen,
 694                  &direction, &ascent2, &descent2, &overall);
 695
 696     if ( width )
 697         *width = (overall.width);
 698     if ( height )
 699         *height = (ascent2 + descent2);
 700     if ( descent )
 701         *descent = descent2;
 702     if ( ascent )
 703         *ascent = ascent2;
 704 }
 705
 706 #endif // !wxMOTIF_USE_RENDER_TABLE