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 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 #define DEBUG_PRINTF(NAME)                            \
  24     {                                                 \
  25         static int raz=0;                             \
  26         printf( #NAME " %i\n",raz); fflush(stdout);   \
  27         raz++;                                        \
  28     }
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/app.h"
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35 #endif //WX_PRECOMP
  36
  37 #include "wx/os2/private.h"
  38
  39 #include "wx/fontutil.h"
  40 #include "wx/fontmap.h"
  41 #include "wx/encinfo.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( const wxString& rsStr )
  57 {
  58     wxStringTokenizer               vTokenizer(rsStr, _T(";"));
  59     wxString                        sEncid = vTokenizer.GetNextToken();
  60     long                            lEnc;
  61
  62     if (!sEncid.ToLong(&lEnc))
  63         return FALSE;
  64     encoding = (wxFontEncoding)lEnc;
  65     facename = vTokenizer.GetNextToken();
  66     if (!facename)
  67         return FALSE;
  68
  69     wxString                        sTmp = vTokenizer.GetNextToken();
  70
  71     if (!sTmp)
  72     {
  73         charset = 850;
  74     }
  75     else
  76     {
  77         if ( wxSscanf(sTmp, _T("%u"), &charset) != 1 )
  78         {
  79             // should be a number!
  80             return FALSE;
  81         }
  82     }
  83     return true;
  84 } // end of wxNativeEncodingInfo::FromString
  85
  86 wxString wxNativeEncodingInfo::ToString() const
  87 {
  88     wxString                        sStr;
  89
  90     sStr << (long)encoding << _T(';') << facename;
  91
  92     if (charset != 850)
  93     {
  94         sStr << _T(';') << charset;
  95     }
  96     return sStr;
  97 } // end of wxNativeEncodingInfo::ToString
  98
  99 // ----------------------------------------------------------------------------
 100 // helper functions
 101 // ----------------------------------------------------------------------------
 102
 103 bool wxGetNativeFontEncoding( wxFontEncoding vEncoding,
 104                               wxNativeEncodingInfo* pInfo )
 105 {
 106     wxCHECK_MSG(pInfo, FALSE, _T("bad pointer in wxGetNativeFontEncoding") );
 107     if (vEncoding == wxFONTENCODING_DEFAULT)
 108     {
 109         vEncoding = wxFont::GetDefaultEncoding();
 110     }
 111     switch (vEncoding)
 112     {
 113         case wxFONTENCODING_ISO8859_1:
 114         case wxFONTENCODING_ISO8859_15:
 115         case wxFONTENCODING_CP1250:
 116             pInfo->charset = 1250;
 117             break;
 118
 119         case wxFONTENCODING_ISO8859_2:
 120         case wxFONTENCODING_CP1252:
 121             pInfo->charset = 1252;
 122             break;
 123
 124         case wxFONTENCODING_ISO8859_4:
 125         case wxFONTENCODING_ISO8859_10:
 126             pInfo->charset = 921; // what is baltic?
 127             break;
 128
 129         case wxFONTENCODING_ISO8859_5:
 130         case wxFONTENCODING_CP1251:
 131             pInfo->charset = 1251;
 132             break;
 133
 134         case wxFONTENCODING_ISO8859_6:
 135             pInfo->charset = 864;
 136             break;
 137
 138         case wxFONTENCODING_ISO8859_7:
 139             pInfo->charset = 869;
 140             break;
 141
 142         case wxFONTENCODING_ISO8859_8:
 143             pInfo->charset = 862;
 144             break;
 145
 146         case wxFONTENCODING_ISO8859_9:
 147             pInfo->charset = 857;
 148             break;
 149
 150         case wxFONTENCODING_ISO8859_11:
 151             pInfo->charset = 874; // what is thai
 152             break;
 153
 154         case wxFONTENCODING_CP437:
 155             pInfo->charset = 437;
 156             break;
 157
 158         default:
 159             wxFAIL_MSG(wxT("unsupported encoding"));
 160             // fall through
 161
 162         case wxFONTENCODING_SYSTEM:
 163             pInfo->charset = 850;
 164             break;
 165     }
 166     return true;
 167 } // end of wxGetNativeFontEncoding
 168
 169 wxFontEncoding wxGetFontEncFromCharSet(
 170   int                               nCharSet
 171 )
 172 {
 173     wxFontEncoding                  eFontEncoding;
 174
 175     switch (nCharSet)
 176     {
 177         default:
 178         case 1250:
 179             eFontEncoding = wxFONTENCODING_CP1250;
 180             break;
 181
 182         case 1252:
 183             eFontEncoding = wxFONTENCODING_CP1252;
 184             break;
 185
 186         case 921:
 187             eFontEncoding = wxFONTENCODING_ISO8859_4;
 188             break;
 189
 190         case 1251:
 191             eFontEncoding = wxFONTENCODING_CP1251;
 192             break;
 193
 194         case 864:
 195             eFontEncoding = wxFONTENCODING_ISO8859_6;
 196             break;
 197
 198         case 869:
 199             eFontEncoding = wxFONTENCODING_ISO8859_7;
 200             break;
 201
 202         case 862:
 203             eFontEncoding = wxFONTENCODING_ISO8859_8;
 204             break;
 205
 206         case 857:
 207             eFontEncoding = wxFONTENCODING_ISO8859_9;
 208             break;
 209
 210         case 874:
 211             eFontEncoding = wxFONTENCODING_ISO8859_11;
 212             break;
 213
 214         case 437:
 215             eFontEncoding = wxFONTENCODING_CP437;
 216             break;
 217     }
 218     return eFontEncoding;
 219 } // end of wxGetNativeFontEncoding
 220
 221 bool wxTestFontEncoding( const wxNativeEncodingInfo& rInfo )
 222 {
 223     FATTRS vLogFont;
 224     HPS    hPS;
 225
 226     hPS = ::WinGetPS(HWND_DESKTOP);
 227
 228     memset(&vLogFont, '\0', sizeof(FATTRS));           // all default values
 229     vLogFont.usRecordLength = sizeof(FATTRS);
 230     vLogFont.usCodePage = (USHORT)rInfo.charset;
 231     vLogFont.lMaxBaselineExt = 0L;                    // Outline fonts should use 0
 232     vLogFont.lAveCharWidth = 0L;                      // Outline fonts should use 0
 233     vLogFont.fsFontUse = FATTR_FONTUSE_OUTLINE |      // only outline fonts allowed
 234                          FATTR_FONTUSE_TRANSFORMABLE; // may be transformed
 235
 236     wxStrncpy((wxChar*)vLogFont.szFacename, rInfo.facename.c_str(), WXSIZEOF(vLogFont.szFacename));
 237
 238     if (!::GpiCreateLogFont( hPS
 239                             ,NULL
 240                             ,1L
 241                             ,&vLogFont
 242                            ))
 243     {
 244         ::WinReleasePS(hPS);
 245         return FALSE;
 246     }
 247     ::WinReleasePS(hPS);
 248     return true;
 249 } // end of wxTestFontEncoding
 250
 251 // ----------------------------------------------------------------------------
 252 // wxFont <-> LOGFONT conversion
 253 // ----------------------------------------------------------------------------
 254
 255 void wxConvertVectorFontSize(
 256   FIXED                             fxPointSize
 257 , PFATTRS                           pFattrs
 258 )
 259 {
 260     HPS                             hPS;
 261     HDC                             hDC;
 262     LONG                            lXFontResolution;
 263     LONG                            lYFontResolution;
 264     SIZEF                           vSizef;
 265
 266     hPS = WinGetScreenPS(HWND_DESKTOP); // Screen presentation space
 267
 268     //
 269     //   Query device context for the screen and then query
 270     //   the resolution of the device for the device context.
 271     //
 272
 273     hDC = GpiQueryDevice(hPS);
 274     DevQueryCaps( hDC, CAPS_HORIZONTAL_FONT_RES, (LONG)1, &lXFontResolution);
 275     DevQueryCaps( hDC, CAPS_VERTICAL_FONT_RES, (LONG)1, &lYFontResolution);
 276
 277     //
 278     //   Calculate the size of the character box, based on the
 279     //   point size selected and the resolution of the device.
 280     //   The size parameters are of type FIXED, NOT int.
 281     //   NOTE: 1 point == 1/72 of an inch.
 282     //
 283
 284     vSizef.cx = (FIXED)(((fxPointSize) / 72 ) * lXFontResolution );
 285     vSizef.cy = (FIXED)(((fxPointSize) / 72 ) * lYFontResolution );
 286
 287     pFattrs->lMaxBaselineExt = MAKELONG( HIUSHORT( vSizef.cy ), 0 );
 288     pFattrs->lAveCharWidth   = MAKELONG( HIUSHORT( vSizef.cx ), 0 );
 289     WinReleasePS(hPS);
 290
 291 } // end of wxConvertVectorPointSize
 292
 293 void wxFillLogFont( LOGFONT*      pFattrs,  // OS2 GPI FATTRS
 294                     PFACENAMEDESC pFaceName,
 295                     HPS*          phPS,
 296                     bool*         pbInternalPS,
 297                     long*         pflId,
 298                     wxString&     sFaceName,
 299                     wxFont*       pFont )
 300 {
 301     LONG         lNumFonts = 0L;       // For system font count
 302     ERRORID      vError;               // For logging API errors
 303     LONG         lTemp = 0L;
 304     bool         bInternalPS = false;  // if we have to create one
 305     PFONTMETRICS pFM = NULL;
 306
 307     //
 308     // Initial house cleaning to free data buffers and ensure we have a
 309     // functional PS to work with
 310     //
 311     if (!*phPS)
 312     {
 313         *phPS = ::WinGetPS(HWND_DESKTOP);
 314         bInternalPS = true;
 315     }
 316
 317     //
 318     // Determine the number of fonts.
 319     //
 320     if((lNumFonts = ::GpiQueryFonts( *phPS
 321                                     ,QF_PUBLIC | QF_PRIVATE
 322                                     ,NULL
 323                                     ,&lTemp
 324                                     ,(LONG) sizeof(FONTMETRICS)
 325                                     ,NULL
 326                                    )) < 0L)
 327     {
 328         ERRORID                     vError;
 329         wxString                    sError;
 330
 331         vError = ::WinGetLastError(wxGetInstance());
 332         sError = wxPMErrorToStr(vError);
 333         return;
 334     }
 335
 336     //
 337     // Allocate space for the font metrics.
 338     //
 339     pFM = new FONTMETRICS[lNumFonts + 1];
 340
 341     //
 342     // Retrieve the font metrics.
 343     //
 344     lTemp = lNumFonts;
 345     lTemp = ::GpiQueryFonts( *phPS
 346                             ,QF_PUBLIC
 347                             ,NULL
 348                             ,&lTemp
 349                             ,(LONG) sizeof(FONTMETRICS)
 350                             ,pFM
 351                            );
 352     pFont->SetFM( pFM
 353                  ,(int)lNumFonts
 354                 );
 355
 356     //
 357     // Initialize FATTR and FACENAMEDESC
 358     //
 359     pFattrs->usRecordLength = sizeof(FATTRS);
 360     pFattrs->fsFontUse = FATTR_FONTUSE_OUTLINE;       // only outline fonts allowed
 361     pFattrs->fsType = 0;
 362     pFattrs->lMaxBaselineExt = pFattrs->lAveCharWidth = 0;
 363     pFattrs->idRegistry = 0;
 364     pFattrs->lMatch = 0;
 365
 366     pFaceName->usSize = sizeof(FACENAMEDESC);
 367     pFaceName->usWeightClass = FWEIGHT_DONT_CARE;
 368     pFaceName->usWidthClass = FWIDTH_DONT_CARE;
 369     pFaceName->usReserved = 0;
 370     pFaceName->flOptions = 0;
 371
 372     //
 373     // This does the actual selection of fonts
 374     //
 375     wxOS2SelectMatchingFontByName( pFattrs
 376                                   ,pFaceName
 377                                   ,pFM
 378                                   ,(int)lNumFonts
 379                                   ,pFont
 380                                  );
 381     //
 382     // We should now have the correct FATTRS set with the selected
 383     // font, so now we need to generate an ID
 384     //
 385     long                            lNumLids = ::GpiQueryNumberSetIds(*phPS);
 386
 387     if(lNumLids )
 388     {
 389         long                        alTypes[255];
 390         STR8                        azNames[255];
 391         long                        alIds[255];
 392
 393         memset(alIds, 0, sizeof(long) * 255);
 394         if(!::GpiQuerySetIds( *phPS
 395                              ,lNumLids
 396                              ,alTypes
 397                              ,azNames
 398                              ,alIds
 399                             ))
 400         {
 401             if (bInternalPS)
 402                 ::WinReleasePS(*phPS);
 403             return;
 404         }
 405         if (*pflId == 0L)
 406             *pflId = 1L;
 407         for(unsigned long LCNum = 0; LCNum < (unsigned long)lNumLids; LCNum++)
 408             if(alIds[LCNum] == *pflId)
 409                ++*pflId;
 410         if(*pflId > 254)  // wow, no id available!
 411         {
 412             if (bInternalPS)
 413                ::WinReleasePS(*phPS);
 414            return;
 415         }
 416     }
 417     else
 418         *pflId = 1L;
 419     //
 420     // Release and delete the current font
 421     //
 422     ::GpiSetCharSet(*phPS, LCID_DEFAULT);/* release the font before deleting */
 423     ::GpiDeleteSetId(*phPS, 1L);         /* delete the logical font          */
 424
 425     //
 426     // Now build a facestring
 427     //
 428     char                            zFacename[128];
 429
 430     strcpy(zFacename, pFattrs->szFacename);
 431
 432     if(::GpiQueryFaceString( *phPS
 433                             ,zFacename
 434                             ,pFaceName
 435                             ,FACESIZE
 436                             ,pFattrs->szFacename
 437                            ) == GPI_ERROR)
 438     {
 439         vError = ::WinGetLastError(vHabmain);
 440     }
 441     sFaceName = (wxChar*)zFacename;
 442     *pbInternalPS = bInternalPS;
 443
 444     //
 445     // That's it, we now have everything we need to actually create the font
 446     //
 447 } // end of wxFillLogFont
 448
 449 void wxOS2SelectMatchingFontByName(
 450   PFATTRS                           pFattrs
 451 , PFACENAMEDESC                     pFaceName
 452 , PFONTMETRICS                      pFM
 453 , int                               nNumFonts
 454 , const wxFont*                     pFont
 455 )
 456 {
 457     int                             i;
 458     int                             nPointSize;
 459     int                             nIs;
 460     int                             nMinDiff0;
 461     int                             anDiff[16];
 462     int                             anMinDiff[16];
 463     int                             nIndex = 0;
 464     wxChar                          zFontFaceName[FACESIZE];
 465     wxString                        sFaceName;
 466     USHORT                          usWeightClass;
 467     int                             fsSelection = 0;
 468
 469     nMinDiff0 = 0xf000;
 470     for(i = 0;i < 16; i++)
 471         anMinDiff[i] = nMinDiff0;
 472
 473     switch (pFont->GetFamily())
 474     {
 475         case wxSCRIPT:
 476             sFaceName = wxT("Tms Rmn");
 477             break;
 478
 479         case wxDECORATIVE:
 480             sFaceName = wxT("WarpSans");
 481             break;
 482
 483         case wxROMAN:
 484             sFaceName = wxT("Tms Rmn");
 485             break;
 486
 487         case wxTELETYPE:
 488             sFaceName = wxT("Courier") ;
 489             break;
 490
 491         case wxMODERN:
 492             sFaceName = wxT("System VIO") ;
 493             break;
 494
 495         case wxSWISS:
 496             sFaceName = wxT("Helv") ;
 497             break;
 498
 499         case wxDEFAULT:
 500         default:
 501             sFaceName = wxT("System VIO") ;
 502     }
 503
 504     switch (pFont->GetWeight())
 505     {
 506         default:
 507             wxFAIL_MSG(_T("unknown font weight"));
 508             // fall through
 509             usWeightClass = FWEIGHT_DONT_CARE;
 510             break;
 511
 512         case wxNORMAL:
 513             usWeightClass = FWEIGHT_NORMAL;
 514             break;
 515
 516         case wxLIGHT:
 517             usWeightClass = FWEIGHT_LIGHT;
 518             break;
 519
 520         case wxBOLD:
 521             usWeightClass = FWEIGHT_BOLD;
 522             break;
 523
 524          case wxFONTWEIGHT_MAX:
 525             usWeightClass = FWEIGHT_ULTRA_BOLD;
 526             break;
 527     }
 528     pFaceName->usWeightClass = usWeightClass;
 529
 530     switch (pFont->GetStyle())
 531     {
 532         case wxITALIC:
 533         case wxSLANT:
 534             fsSelection = FM_SEL_ITALIC;
 535             pFaceName->flOptions = FTYPE_ITALIC;
 536             break;
 537
 538         default:
 539             wxFAIL_MSG(wxT("unknown font slant"));
 540             // fall through
 541
 542         case wxNORMAL:
 543             fsSelection  = 0;
 544             break;
 545     }
 546
 547     wxStrncpy(zFontFaceName, sFaceName.c_str(), WXSIZEOF(zFontFaceName));
 548     nPointSize = pFont->GetPointSize();
 549
 550     //
 551     // Matching logic to find the right FM struct
 552     //
 553     nIndex = 0;
 554     for(i = 0, nIs = 0; i < nNumFonts; i++)
 555     {
 556         int                         nEmHeight = 0;
 557         int                         nXHeight = 0;
 558
 559         anDiff[0] = wxGpiStrcmp((wxChar*)pFM[i].szFacename, zFontFaceName);
 560         anDiff[1] = abs(pFM[i].lEmHeight - nPointSize);
 561         anDiff[2] = abs(pFM[i].usWeightClass -  usWeightClass);
 562         anDiff[3] = abs((pFM[i].fsSelection & 0x2f) -  fsSelection);
 563         if(anDiff[0] == 0)
 564         {
 565             nEmHeight = (int)pFM[i].lEmHeight;
 566             nXHeight  =(int)pFM[i].lXHeight;
 567             if( (nIs & 0x01) == 0)
 568             {
 569                 nIs = 1;
 570                 nIndex = i;
 571                 anMinDiff[1] = anDiff[1];
 572                 anMinDiff[2] = anDiff[2];
 573                 anMinDiff[3] = anDiff[3];
 574             }
 575             else if(anDiff[3] < anMinDiff[3])
 576             {
 577                 nIndex = i;
 578                 anMinDiff[3] = anDiff[3];
 579             }
 580             else if(anDiff[2] < anMinDiff[2])
 581             {
 582                 nIndex = i;
 583                 anMinDiff[2] = anDiff[2];
 584             }
 585             else if(anDiff[1] < anMinDiff[1])
 586             {
 587                 nIndex = i;
 588                 anMinDiff[1] = anDiff[1];
 589             }
 590             anMinDiff[0] = 0;
 591         }
 592         else if(anDiff[0] < anMinDiff[0])
 593         {
 594               nIs = 2;
 595               nIndex = i;
 596               anMinDiff[3] = anDiff[3];
 597               anMinDiff[2] = anDiff[2];
 598               anMinDiff[1] = anDiff[1];
 599               anMinDiff[0] = anDiff[0];
 600         }
 601         else if(anDiff[0] == anMinDiff[0])
 602         {
 603             if(anDiff[3] < anMinDiff[3])
 604             {
 605                 nIndex = i;
 606                 anMinDiff[3] = anDiff[3];
 607                 nIs = 2;
 608             }
 609             else if(anDiff[2] < anMinDiff[2])
 610             {
 611                 nIndex = i;
 612                 anMinDiff[2] = anDiff[2];
 613                 nIs = 2;
 614             }
 615             else if(anDiff[1] < anMinDiff[1])
 616             {
 617                 nIndex = i;
 618                 anMinDiff[1] = anDiff[1];
 619                 nIs = 2;
 620             }
 621         }
 622     }
 623
 624     //
 625     // Fill in the FATTRS with the best match from FONTMETRICS
 626     //
 627     pFattrs->usRecordLength  = sizeof(FATTRS);              // Sets size of structure
 628     pFattrs->lMatch          = pFM[nIndex].lMatch;          // Force match
 629     pFattrs->idRegistry      = 0;
 630     pFattrs->usCodePage      = 0;
 631     pFattrs->fsFontUse       = 0;
 632     pFattrs->fsType          = 0;
 633     pFattrs->lMaxBaselineExt = 0;
 634     pFattrs->lAveCharWidth   = 0;
 635     wxStrcpy((wxChar*)pFattrs->szFacename, (wxChar*)pFM[nIndex].szFacename);
 636     if (pFont->GetWeight() == wxNORMAL)
 637         pFattrs->fsSelection = 0;
 638     else
 639         pFattrs->fsSelection = FATTR_SEL_BOLD;
 640
 641     if (pFont->GetStyle() == wxITALIC || pFont->GetStyle() == wxSLANT)
 642         pFattrs->fsSelection |= FATTR_SEL_ITALIC;
 643
 644     if (pFont->GetUnderlined())
 645         pFattrs->fsSelection |= FATTR_SEL_UNDERSCORE;
 646 } // end of wxOS2SelectMatchingFontByName
 647
 648 wxFont wxCreateFontFromLogFont(
 649   const LOGFONT*                    pLogFont
 650 , const PFONTMETRICS                pFM
 651 , PFACENAMEDESC                     pFaceName
 652 )
 653 {
 654     wxNativeFontInfo                vInfo;
 655
 656     vInfo.fa = *pLogFont;
 657     vInfo.fm = *pFM;
 658     vInfo.fn = *pFaceName;
 659     return wxFont(vInfo);
 660 } // end of wxCreateFontFromLogFont
 661
 662 int wxGpiStrcmp(
 663   wxChar*                           s0
 664 , wxChar*                           s1
 665 )
 666 {   int                             l0;
 667     int                             l1;
 668     int                             l;
 669     int                             d;
 670     int                             d1;
 671     int                             i;
 672     int                             rc;
 673
 674     rc = 0;
 675     if(s0 == NULL)
 676     {
 677         if(s1 == NULL)
 678             return 0;
 679         else
 680             return 32;
 681     }
 682     else if(s1 == NULL)
 683         return 32;
 684
 685     l0 = wxStrlen(s0);
 686     l1 = wxStrlen(s1);
 687     l  = l0;
 688     if(l0 != l1)
 689     {
 690         rc++;
 691         if(l1 < l0)
 692             l = l1;
 693     }
 694     for(i=0;i<l;i++)
 695     {
 696         d = s0[i]-s1[i];
 697         if(!d)
 698             continue;
 699         d1 = wxToupper(s0[i]) - wxToupper(s1[i]);
 700         if(!d1)
 701             continue;
 702         rc += abs(d);
 703     }
 704     return rc;
 705 }