src/os2/fontutil.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/fontutil.cpp
   3 // Purpose:     font-related helper functions for wxMSW
   4 // Author:      Modified by David Webster for OS/2
   5 // Modified by:
   6 // Created:     01.03.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11 #define DEBUG_PRINTF(NAME)   { static int raz=0; \
  12   printf( #NAME " %i\n",raz); fflush(stdout);       \
  13    raz++;                                        \
  14  }
  15
  16 // ============================================================================
  17 // declarations
  18 // ============================================================================
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 #ifdef __GNUG__
  25     #pragma implementation "fontutil.h"
  26 #endif
  27
  28 // For compilers that support precompilation, includes "wx.h".
  29 #include "wx/wxprec.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/string.h"
  34     #include "wx/log.h"
  35     #include "wx/intl.h"
  36 #endif //WX_PRECOMP
  37
  38 #include "wx/os2/private.h"
  39
  40 #include "wx/fontutil.h"
  41 #include "wx/fontmap.h"
  42
  43 #include "wx/tokenzr.h"
  44
  45 // ============================================================================
  46 // implementation
  47 // ============================================================================
  48
  49 // ----------------------------------------------------------------------------
  50 // wxNativeEncodingInfo
  51 // ----------------------------------------------------------------------------
  52
  53 // convert to/from the string representation: format is
  54 //      encodingid;facename[;charset]
  55
  56 bool wxNativeEncodingInfo::FromString(
  57   const wxString&                   rsStr
  58 )
  59 {
  60     wxStringTokenizer               vTokenizer(rsStr, _T(";"));
  61     wxString                        sEncid = vTokenizer.GetNextToken();
  62     long                            lEnc;
  63
  64     if (!sEncid.ToLong(&lEnc))
  65         return FALSE;
  66     encoding = (wxFontEncoding)lEnc;
  67     facename = vTokenizer.GetNextToken();
  68     if (!facename)
  69         return FALSE;
  70
  71     wxString                        sTmp = vTokenizer.GetNextToken();
  72
  73     if (!sTmp)
  74     {
  75         charset = 850;
  76     }
  77     else
  78     {
  79         if ( wxSscanf(sTmp, _T("%u"), &charset) != 1 )
  80         {
  81             // should be a number!
  82             return FALSE;
  83         }
  84     }
  85     return TRUE;
  86 } // end of wxNativeEncodingInfo::FromString
  87
  88 wxString wxNativeEncodingInfo::ToString() const
  89 {
  90     wxString                        sStr;
  91
  92     sStr << (long)encoding << _T(';') << facename;
  93
  94     if (charset != 850)
  95     {
  96         sStr << _T(';') << charset;
  97     }
  98     return sStr;
  99 } // end of wxNativeEncodingInfo::ToString
 100
 101 // ----------------------------------------------------------------------------
 102 // helper functions
 103 // ----------------------------------------------------------------------------
 104
 105 bool wxGetNativeFontEncoding(
 106   wxFontEncoding                    vEncoding
 107 , wxNativeEncodingInfo*             pInfo
 108 )
 109 {
 110     wxCHECK_MSG(pInfo, FALSE, _T("bad pointer in wxGetNativeFontEncoding") );
 111     if (vEncoding == wxFONTENCODING_DEFAULT)
 112     {
 113         vEncoding = wxFont::GetDefaultEncoding();
 114     }
 115     switch (vEncoding)
 116     {
 117         case wxFONTENCODING_ISO8859_1:
 118         case wxFONTENCODING_ISO8859_15:
 119         case wxFONTENCODING_CP1250:
 120             pInfo->charset = 1250;
 121             break;
 122
 123         case wxFONTENCODING_ISO8859_2:
 124         case wxFONTENCODING_CP1252:
 125             pInfo->charset = 1252;
 126             break;
 127
 128         case wxFONTENCODING_ISO8859_4:
 129         case wxFONTENCODING_ISO8859_10:
 130             pInfo->charset = 921; // what is baltic?
 131             break;
 132
 133         case wxFONTENCODING_ISO8859_5:
 134         case wxFONTENCODING_CP1251:
 135             pInfo->charset = 1251;
 136             break;
 137
 138         case wxFONTENCODING_ISO8859_6:
 139             pInfo->charset = 864;
 140             break;
 141
 142         case wxFONTENCODING_ISO8859_7:
 143             pInfo->charset = 869;
 144             break;
 145
 146         case wxFONTENCODING_ISO8859_8:
 147             pInfo->charset = 862;
 148             break;
 149
 150         case wxFONTENCODING_ISO8859_9:
 151             pInfo->charset = 857;
 152             break;
 153
 154         case wxFONTENCODING_ISO8859_11:
 155             pInfo->charset = 874; // what is thai
 156             break;
 157
 158         case wxFONTENCODING_CP437:
 159             pInfo->charset = 437;
 160             break;
 161
 162         default:
 163             wxFAIL_MSG(wxT("unsupported encoding"));
 164             // fall through
 165
 166         case wxFONTENCODING_SYSTEM:
 167             pInfo->charset = 850;
 168             break;
 169     }
 170     return TRUE;
 171 } // end of wxGetNativeFontEncoding
 172
 173 wxFontEncoding wxGetFontEncFromCharSet(
 174   int                               nCharSet
 175 )
 176 {
 177     wxFontEncoding                  eFontEncoding;
 178
 179     switch (nCharSet)
 180     {
 181         default:
 182         case 1250:
 183             eFontEncoding = wxFONTENCODING_CP1250;
 184             break;
 185
 186         case 1252:
 187             eFontEncoding = wxFONTENCODING_CP1252;
 188             break;
 189
 190         case 921:
 191             eFontEncoding = wxFONTENCODING_ISO8859_4;
 192             break;
 193
 194         case 1251:
 195             eFontEncoding = wxFONTENCODING_CP1251;
 196             break;
 197
 198         case 864:
 199             eFontEncoding = wxFONTENCODING_ISO8859_6;
 200             break;
 201
 202         case 869:
 203             eFontEncoding = wxFONTENCODING_ISO8859_7;
 204             break;
 205
 206         case 862:
 207             eFontEncoding = wxFONTENCODING_ISO8859_8;
 208             break;
 209
 210         case 857:
 211             eFontEncoding = wxFONTENCODING_ISO8859_9;
 212             break;
 213
 214         case 874:
 215             eFontEncoding = wxFONTENCODING_ISO8859_11;
 216             break;
 217
 218         case 437:
 219             eFontEncoding = wxFONTENCODING_CP437;
 220             break;
 221     }
 222     return eFontEncoding;
 223 } // end of wxGetNativeFontEncoding
 224
 225 bool wxTestFontEncoding(
 226   const wxNativeEncodingInfo&       rInfo
 227 )
 228 {
 229     FATTRS                          vLogFont;
 230     HPS                             hPS;
 231
 232     hPS = ::WinGetPS(HWND_DESKTOP);
 233
 234     memset(&vLogFont, '\0', sizeof(FATTRS));           // all default values
 235     vLogFont.usRecordLength = sizeof(FATTRS);
 236     vLogFont.usCodePage = rInfo.charset;
 237     vLogFont.lMaxBaselineExt = 0L;                    // Outline fonts should use 0
 238     vLogFont.lAveCharWidth = 0L;                      // Outline fonts should use 0
 239     vLogFont.fsFontUse = FATTR_FONTUSE_OUTLINE |      // only outline fonts allowed
 240                          FATTR_FONTUSE_TRANSFORMABLE; // may be transformed
 241
 242     strncpy(vLogFont.szFacename, rInfo.facename.c_str(), sizeof(vLogFont.szFacename));
 243
 244     if (!::GpiCreateLogFont( hPS
 245                             ,NULL
 246                             ,1L
 247                             ,&vLogFont
 248                            ))
 249     {
 250         ::WinReleasePS(hPS);
 251         return FALSE;
 252     }
 253     ::WinReleasePS(hPS);
 254     return TRUE;
 255 } // end of wxTestFontEncoding
 256
 257 // ----------------------------------------------------------------------------
 258 // wxFont <-> LOGFONT conversion
 259 // ----------------------------------------------------------------------------
 260
 261 void wxFillLogFont(
 262   LOGFONT*                          pFattrs  // OS2 GPI FATTRS
 263 , PFACENAMEDESC                     pFaceName
 264 , HPS*                              phPS
 265 , bool*                             pbInternalPS
 266 , long*                             pflId
 267 , wxString&                         sFaceName
 268 , wxFont*                           pFont
 269 )
 270 {
 271     LONG                            lNumFonts = 0L;       // For system font count
 272     ERRORID                         vError;               // For logging API errors
 273     LONG                            lTemp = 0L;
 274     bool                            bInternalPS = FALSE;  // if we have to create one
 275     PFONTMETRICS                    pFM = NULL;
 276
 277     //
 278     // Initial house cleaning to free data buffers and ensure we have a
 279     // functional PS to work with
 280     //
 281     if (!*phPS)
 282     {
 283         *phPS = ::WinGetPS(HWND_DESKTOP);
 284         bInternalPS = TRUE;
 285     }
 286
 287     //
 288     // Determine the number of fonts.
 289     //
 290     if((lNumFonts = ::GpiQueryFonts( *phPS
 291                                     ,QF_PUBLIC | QF_PRIVATE
 292                                     ,NULL
 293                                     ,&lTemp
 294                                     ,(LONG) sizeof(FONTMETRICS)
 295                                     ,NULL
 296                                    )) < 0L)
 297     {
 298         ERRORID                     vError;
 299         wxString                    sError;
 300
 301         vError = ::WinGetLastError(wxGetInstance());
 302         sError = wxPMErrorToStr(vError);
 303         return;
 304     }
 305
 306     //
 307     // Allocate space for the font metrics.
 308     //
 309     pFM = new FONTMETRICS[lNumFonts + 1];
 310
 311     //
 312     // Retrieve the font metrics.
 313     //
 314     lTemp = lNumFonts;
 315     lTemp = ::GpiQueryFonts( *phPS
 316                             ,QF_PUBLIC
 317                             ,NULL
 318                             ,&lTemp
 319                             ,(LONG) sizeof(FONTMETRICS)
 320                             ,pFM
 321                            );
 322     pFont->SetFM( pFM
 323                  ,(int)lNumFonts
 324                 );
 325
 326     //
 327     // Initialize FATTR and FACENAMEDESC
 328     //
 329     pFattrs->usRecordLength = sizeof(FATTRS);
 330     pFattrs->fsFontUse = FATTR_FONTUSE_OUTLINE |       // only outline fonts allowed
 331                          FATTR_FONTUSE_TRANSFORMABLE;  // may be transformed
 332     pFattrs->fsType = 0;
 333     pFattrs->lMaxBaselineExt = pFattrs->lAveCharWidth = 0;
 334     pFattrs->idRegistry = 0;
 335     pFattrs->lMatch = 0;
 336
 337     pFaceName->usSize = sizeof(FACENAMEDESC);
 338     pFaceName->usWeightClass = FWEIGHT_DONT_CARE;
 339     pFaceName->usWidthClass = FWIDTH_DONT_CARE;
 340     pFaceName->usReserved = 0;
 341     pFaceName->flOptions = 0;
 342
 343     //
 344     // This does the actual selection of fonts
 345     //
 346     wxOS2SelectMatchingFontByName( pFattrs
 347                                   ,pFaceName
 348                                   ,pFM
 349                                   ,(int)lNumFonts
 350                                   ,pFont
 351                                  );
 352     //
 353     // We should now have the correct FATTRS set with the selected
 354     // font, so now we need to generate an ID
 355     //
 356     long                            lNumLids = ::GpiQueryNumberSetIds(*phPS);
 357     long                            lGpiError;
 358
 359     if(lNumLids )
 360     {
 361         long                        alTypes[255];
 362         STR8                        azNames[255];
 363         long                        alIds[255];
 364
 365         memset(alIds, 0, sizeof(long) * 255);
 366         if(!::GpiQuerySetIds( *phPS
 367                              ,lNumLids
 368                              ,alTypes
 369                              ,azNames
 370                              ,alIds
 371                             ))
 372         {
 373             if (bInternalPS)
 374                 ::WinReleasePS(*phPS);
 375             return;
 376         }
 377         if (*pflId == 0L)
 378             *pflId = 1L;
 379         for(unsigned long LCNum = 0; LCNum < lNumLids; LCNum++)
 380             if(alIds[LCNum] == *pflId)
 381                ++*pflId;
 382         if(*pflId > 254)  // wow, no id available!
 383         {
 384             if (bInternalPS)
 385                ::WinReleasePS(*phPS);
 386            return;
 387         }
 388     }
 389     else
 390         *pflId = 1L;
 391     //
 392     // Release and delete the current font
 393     //
 394     ::GpiSetCharSet(*phPS, LCID_DEFAULT);/* release the font before deleting */
 395     ::GpiDeleteSetId(*phPS, 1L);         /* delete the logical font          */
 396
 397     //
 398     // Now build a facestring
 399     //
 400     char                            zFacename[128];
 401
 402     strcpy(zFacename, pFattrs->szFacename);
 403
 404     if(::GpiQueryFaceString( *phPS
 405                             ,zFacename
 406                             ,pFaceName
 407                             ,FACESIZE
 408                             ,pFattrs->szFacename
 409                            ) == GPI_ERROR)
 410     {
 411         vError = ::WinGetLastError(vHabmain);
 412     }
 413     sFaceName = zFacename;
 414     *pbInternalPS = bInternalPS;
 415
 416     //
 417     // That's it, we now have everything we need to actually create the font
 418     //
 419 } // end of wxFillLogFont
 420
 421 void wxOS2SelectMatchingFontByName(
 422   PFATTRS                           pFattrs
 423 , PFACENAMEDESC                     pFaceName
 424 , PFONTMETRICS                      pFM
 425 , int                               nNumFonts
 426 , const wxFont*                     pFont
 427 )
 428 {
 429     int                             i;
 430     int                             nDiff0;
 431     int                             nPointSize;
 432     int                             nDiff;
 433     int                             nIs;
 434     int                             nMinDiff;
 435     int                             nMinDiff0;
 436     int                             nApirc;
 437     int                             anDiff[16];
 438     int                             anMinDiff[16];
 439     int                             nIndex = 0;
 440     STR8                            zFn;
 441     char                            zFontFaceName[FACESIZE];
 442     wxString                        sFaceName;
 443     USHORT                          usWeightClass;
 444     int                             fsSelection = 0;
 445
 446     nMinDiff0 = 0xf000;
 447     for(i = 0;i < 16; i++)
 448         anMinDiff[i] = nMinDiff0;
 449
 450     switch (pFont->GetFamily())
 451     {
 452         case wxSCRIPT:
 453             sFaceName = wxT("Script");
 454             break;
 455
 456         case wxDECORATIVE:
 457             sFaceName = wxT("WarpSans");
 458             break;
 459
 460         case wxROMAN:
 461             sFaceName = wxT("Times New Roman");
 462             break;
 463
 464         case wxTELETYPE:
 465             sFaceName = wxT("Courier New") ;
 466             break;
 467
 468         case wxMODERN:
 469             sFaceName = wxT("Courier New") ;
 470             break;
 471
 472         case wxSWISS:
 473             sFaceName = wxT("Helv") ;
 474             break;
 475
 476         case wxDEFAULT:
 477         default:
 478             sFaceName = wxT("System VIO") ;
 479     }
 480
 481     switch (pFont->GetWeight())
 482     {
 483         default:
 484             wxFAIL_MSG(_T("unknown font weight"));
 485             // fall through
 486             usWeightClass = FWEIGHT_DONT_CARE;
 487             break;
 488
 489         case wxNORMAL:
 490             usWeightClass = FWEIGHT_NORMAL;
 491             break;
 492
 493         case wxLIGHT:
 494             usWeightClass = FWEIGHT_LIGHT;
 495             break;
 496
 497         case wxBOLD:
 498             usWeightClass = FWEIGHT_BOLD;
 499             break;
 500
 501          case wxFONTWEIGHT_MAX:
 502             usWeightClass = FWEIGHT_ULTRA_BOLD;
 503             break;
 504     }
 505     pFaceName->usWeightClass = usWeightClass;
 506
 507     switch (pFont->GetStyle())
 508     {
 509         case wxITALIC:
 510         case wxSLANT:
 511             fsSelection = FM_SEL_ITALIC;
 512             pFaceName->flOptions = FTYPE_ITALIC;
 513             break;
 514
 515         default:
 516             wxFAIL_MSG(wxT("unknown font slant"));
 517             // fall through
 518
 519         case wxNORMAL:
 520             fsSelection  = 0;
 521             break;
 522     }
 523
 524     wxStrncpy(zFontFaceName, sFaceName.c_str(), WXSIZEOF(zFontFaceName));
 525     nPointSize = pFont->GetPointSize();
 526
 527     //
 528     // Matching logic to find the right FM struct
 529     //
 530     nIndex = 0;
 531     for(i = 0, nIs = 0; i < nNumFonts; i++)
 532     {
 533         int                         nEmHeight = 0;
 534         int                         nXHeight = 0;
 535
 536         anDiff[0] = wxGpiStrcmp(pFM[i].szFacename, zFontFaceName);
 537         anDiff[1] = abs(pFM[i].lEmHeight - nPointSize);
 538         anDiff[2] = abs(pFM[i].usWeightClass -  usWeightClass);
 539         anDiff[3] = abs((pFM[i].fsSelection & 0x2f) -  fsSelection);
 540         if(anDiff[0] == 0)
 541         {
 542             nEmHeight = (int)pFM[i].lEmHeight;
 543             nXHeight  =(int)pFM[i].lXHeight;
 544             if( (nIs & 0x01) == 0)
 545             {
 546                 nIs = 1;
 547                 nIndex = i;
 548                 anMinDiff[1] = anDiff[1];
 549                 anMinDiff[2] = anDiff[2];
 550                 anMinDiff[3] = anDiff[3];
 551             }
 552             else if(anDiff[3] < anMinDiff[3])
 553             {
 554                 nIndex = i;
 555                 anMinDiff[3] = anDiff[3];
 556             }
 557             else if(anDiff[2] < anMinDiff[2])
 558             {
 559                 nIndex = i;
 560                 anMinDiff[2] = anDiff[2];
 561             }
 562             else if(anDiff[1] < anMinDiff[1])
 563             {
 564                 nIndex = i;
 565                 anMinDiff[1] = anDiff[1];
 566             }
 567             anMinDiff[0] = 0;
 568         }
 569         else if(anDiff[0] < anMinDiff[0])
 570         {
 571               nIs = 2;
 572               nIndex = i;
 573               anMinDiff[3] = anDiff[3];
 574               anMinDiff[2] = anDiff[2];
 575               anMinDiff[1] = anDiff[1];
 576               anMinDiff[0] = anDiff[0];
 577         }
 578         else if(anDiff[0] == anMinDiff[0])
 579         {
 580             if(anDiff[3] < anMinDiff[3])
 581             {
 582                 nIndex = i;
 583                 anMinDiff[3] = anDiff[3];
 584                 nIs = 2;
 585             }
 586             else if(anDiff[2] < anMinDiff[2])
 587             {
 588                 nIndex = i;
 589                 anMinDiff[2] = anDiff[2];
 590                 nIs = 2;
 591             }
 592             else if(anDiff[1] < anMinDiff[1])
 593             {
 594                 nIndex = i;
 595                 anMinDiff[1] = anDiff[1];
 596                 nIs = 2;
 597             }
 598         }
 599     }
 600
 601     //
 602     // Fill in the FATTRS with the best match from FONTMETRICS
 603     //
 604     pFattrs->usRecordLength  = sizeof(FATTRS);              // Sets size of structure
 605     pFattrs->fsSelection     = pFM[nIndex].fsSelection;     // Uses default selection
 606     pFattrs->lMatch          = pFM[nIndex].lMatch;          // Force match
 607     pFattrs->idRegistry      = pFM[nIndex].idRegistry;      // Uses default registry
 608     pFattrs->usCodePage      = pFM[nIndex].usCodePage;      // Code-page
 609     pFattrs->fsType          = 0;          // Uses default type
 610     pFattrs->lMaxBaselineExt = 0;
 611     pFattrs->lAveCharWidth   = 0;
 612     pFattrs->fsFontUse       = FATTR_FONTUSE_OUTLINE |      // only outline fonts allowed
 613                                FATTR_FONTUSE_TRANSFORMABLE; // may be transformed
 614 #if 0
 615     pFattrs->lMaxBaselineExt = pFM[nIndex].lMaxBaselineExt;
 616     pFattrs->lAveCharWidth   = pFM[nIndex].lAveCharWidth;
 617 #endif
 618     wxStrcpy(pFattrs->szFacename, pFM[nIndex].szFacename);
 619     // Debug
 620     strcpy(zFontFaceName, pFM[nIndex].szFacename);
 621     strcpy(zFontFaceName, pFattrs->szFacename);
 622
 623     if(usWeightClass >= FWEIGHT_BOLD)
 624         pFattrs->fsSelection |= FATTR_SEL_BOLD;
 625     if(pFont->GetUnderlined())
 626         pFattrs->fsSelection |= FATTR_SEL_UNDERSCORE;
 627     if(fsSelection & FM_SEL_ITALIC)
 628         pFattrs->fsSelection |= FATTR_SEL_ITALIC;
 629 } // end of wxOS2SelectMatchingFontByName
 630
 631 wxFont wxCreateFontFromLogFont(
 632   const LOGFONT*                    pLogFont
 633 , const PFONTMETRICS                pFM
 634 , PFACENAMEDESC                     pFaceName
 635 )
 636 {
 637     wxNativeFontInfo                vInfo;
 638
 639     vInfo.fa = *pLogFont;
 640     vInfo.fm = *pFM;
 641     vInfo.fn = *pFaceName;
 642     return wxFont(vInfo);
 643 } // end of wxCreateFontFromLogFont
 644
 645 int wxGpiStrcmp(
 646   char*                             s0
 647 , char*                             s1
 648 )
 649 {   int                             l0;
 650     int                             l1;
 651     int                             l;
 652     int                             d;
 653     int                             d1;
 654     int                             i;
 655     int                             rc;
 656
 657     rc = 0;
 658     if(s0 == NULL)
 659     {
 660         if(s1 == NULL)
 661             return 0;
 662         else
 663             return 32;
 664     }
 665     else if(s1 == NULL)
 666         return 32;
 667
 668     l0 = strlen(s0);
 669     l1 = strlen(s1);
 670     l  = l0;
 671     if(l0 != l1)
 672     {
 673         rc++;
 674         if(l1 < l0)
 675             l = l1;
 676     }
 677     for(i=0;i<l;i++)
 678     {
 679         d = s0[i]-s1[i];
 680         if(!d)
 681             continue;
 682         d1 = toupper(s0[i]) - toupper(s1[i]);
 683         if(!d1)
 684             continue;
 685         rc += abs(d);
 686     }
 687     return rc;
 688 }
 689