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