src/os2/fontutil.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // For compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #define DEBUG_PRINTF(NAME)                            \
  23     {                                                 \
  24         static int raz=0;                             \
  25         printf( #NAME " %i\n",raz); fflush(stdout);   \
  26         raz++;                                        \
  27     }
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31     #include "wx/string.h"
  32     #include "wx/log.h"
  33     #include "wx/intl.h"
  34 #endif //WX_PRECOMP
  35
  36 #include "wx/os2/private.h"
  37
  38 #include "wx/fontutil.h"
  39 #include "wx/fontmap.h"
  40 #include "wx/encinfo.h"
  41
  42 #include "wx/tokenzr.h"
  43
  44 // ============================================================================
  45 // implementation
  46 // ============================================================================
  47
  48 // ----------------------------------------------------------------------------
  49 // wxNativeEncodingInfo
  50 // ----------------------------------------------------------------------------
  51
  52 // convert to/from the string representation: format is
  53 //      encodingid;facename[;charset]
  54
  55 bool wxNativeEncodingInfo::FromString( const wxString& rsStr )
  56 {
  57     wxStringTokenizer               vTokenizer(rsStr, wxT(";"));
  58     wxString                        sEncid = vTokenizer.GetNextToken();
  59     long                            lEnc;
  60
  61     if (!sEncid.ToLong(&lEnc))
  62         return FALSE;
  63     encoding = (wxFontEncoding)lEnc;
  64     facename = vTokenizer.GetNextToken();
  65     if (!facename)
  66         return FALSE;
  67
  68     wxString                        sTmp = vTokenizer.GetNextToken();
  69
  70     if (!sTmp)
  71     {
  72         charset = 850;
  73     }
  74     else
  75     {
  76         if ( wxSscanf(sTmp, wxT("%u"), &charset) != 1 )
  77         {
  78             // should be a number!
  79             return FALSE;
  80         }
  81     }
  82     return true;
  83 } // end of wxNativeEncodingInfo::FromString
  84
  85 wxString wxNativeEncodingInfo::ToString() const
  86 {
  87     wxString                        sStr;
  88
  89     sStr << (long)encoding << wxT(';') << facename;
  90
  91     if (charset != 850)
  92     {
  93         sStr << wxT(';') << charset;
  94     }
  95     return sStr;
  96 } // end of wxNativeEncodingInfo::ToString
  97
  98 // ----------------------------------------------------------------------------
  99 // helper functions
 100 // ----------------------------------------------------------------------------
 101
 102 bool wxGetNativeFontEncoding( wxFontEncoding vEncoding,
 103                               wxNativeEncodingInfo* pInfo )
 104 {
 105     wxCHECK_MSG(pInfo, FALSE, wxT("bad pointer in wxGetNativeFontEncoding") );
 106     if (vEncoding == wxFONTENCODING_DEFAULT)
 107     {
 108         vEncoding = wxFont::GetDefaultEncoding();
 109     }
 110     switch (vEncoding)
 111     {
 112         case wxFONTENCODING_ISO8859_1:
 113         case wxFONTENCODING_ISO8859_15:
 114         case wxFONTENCODING_CP1250:
 115             pInfo->charset = 1250;
 116             break;
 117
 118         case wxFONTENCODING_ISO8859_2:
 119         case wxFONTENCODING_CP1252:
 120             pInfo->charset = 1252;
 121             break;
 122
 123         case wxFONTENCODING_ISO8859_4:
 124         case wxFONTENCODING_ISO8859_10:
 125             pInfo->charset = 921; // what is baltic?
 126             break;
 127
 128         case wxFONTENCODING_ISO8859_5:
 129         case wxFONTENCODING_CP1251:
 130             pInfo->charset = 1251;
 131             break;
 132
 133         case wxFONTENCODING_ISO8859_6:
 134             pInfo->charset = 864;
 135             break;
 136
 137         case wxFONTENCODING_ISO8859_7:
 138             pInfo->charset = 869;
 139             break;
 140
 141         case wxFONTENCODING_ISO8859_8:
 142             pInfo->charset = 862;
 143             break;
 144
 145         case wxFONTENCODING_ISO8859_9:
 146             pInfo->charset = 857;
 147             break;
 148
 149         case wxFONTENCODING_ISO8859_11:
 150             pInfo->charset = 874; // what is thai
 151             break;
 152
 153         case wxFONTENCODING_CP437:
 154             pInfo->charset = 437;
 155             break;
 156
 157         default:
 158             wxFAIL_MSG(wxT("unsupported encoding"));
 159             // fall through
 160
 161         case wxFONTENCODING_SYSTEM:
 162             pInfo->charset = 850;
 163             break;
 164     }
 165     return true;
 166 } // end of wxGetNativeFontEncoding
 167
 168 wxFontEncoding wxGetFontEncFromCharSet(
 169   int                               nCharSet
 170 )
 171 {
 172     wxFontEncoding                  eFontEncoding;
 173
 174     switch (nCharSet)
 175     {
 176         default:
 177         case 1250:
 178             eFontEncoding = wxFONTENCODING_CP1250;
 179             break;
 180
 181         case 1252:
 182             eFontEncoding = wxFONTENCODING_CP1252;
 183             break;
 184
 185         case 921:
 186             eFontEncoding = wxFONTENCODING_ISO8859_4;
 187             break;
 188
 189         case 1251:
 190             eFontEncoding = wxFONTENCODING_CP1251;
 191             break;
 192
 193         case 864:
 194             eFontEncoding = wxFONTENCODING_ISO8859_6;
 195             break;
 196
 197         case 869:
 198             eFontEncoding = wxFONTENCODING_ISO8859_7;
 199             break;
 200
 201         case 862:
 202             eFontEncoding = wxFONTENCODING_ISO8859_8;
 203             break;
 204
 205         case 857:
 206             eFontEncoding = wxFONTENCODING_ISO8859_9;
 207             break;
 208
 209         case 874:
 210             eFontEncoding = wxFONTENCODING_ISO8859_11;
 211             break;
 212
 213         case 437:
 214             eFontEncoding = wxFONTENCODING_CP437;
 215             break;
 216     }
 217     return eFontEncoding;
 218 } // end of wxGetNativeFontEncoding
 219
 220 bool wxTestFontEncoding( const wxNativeEncodingInfo& rInfo )
 221 {
 222     FATTRS vLogFont;
 223     HPS    hPS;
 224
 225     hPS = ::WinGetPS(HWND_DESKTOP);
 226
 227     memset(&vLogFont, '\0', sizeof(FATTRS));           // all default values
 228     vLogFont.usRecordLength = sizeof(FATTRS);
 229     vLogFont.usCodePage = (USHORT)rInfo.charset;
 230     vLogFont.lMaxBaselineExt = 0L;                    // Outline fonts should use 0
 231     vLogFont.lAveCharWidth = 0L;                      // Outline fonts should use 0
 232     vLogFont.fsFontUse = FATTR_FONTUSE_OUTLINE |      // only outline fonts allowed
 233                          FATTR_FONTUSE_TRANSFORMABLE; // may be transformed
 234
 235     wxStrlcpy((wxChar*)vLogFont.szFacename, rInfo.facename.c_str(), WXSIZEOF(vLogFont.szFacename));
 236
 237     if (!::GpiCreateLogFont( hPS
 238                             ,NULL
 239                             ,1L
 240                             ,&vLogFont
 241                            ))
 242     {
 243         ::WinReleasePS(hPS);
 244         return FALSE;
 245     }
 246     ::WinReleasePS(hPS);
 247     return true;
 248 } // end of wxTestFontEncoding
 249
 250 // ----------------------------------------------------------------------------
 251 // wxFont <-> LOGFONT conversion
 252 // ----------------------------------------------------------------------------
 253
 254 void wxConvertVectorFontSize(
 255   FIXED                             fxPointSize
 256 , PFATTRS                           pFattrs
 257 )
 258 {
 259     HPS                             hPS;
 260     HDC                             hDC;
 261     LONG                            lXFontResolution;
 262     LONG                            lYFontResolution;
 263     SIZEF                           vSizef;
 264
 265     hPS = WinGetScreenPS(HWND_DESKTOP); // Screen presentation space
 266
 267     //
 268     //   Query device context for the screen and then query
 269     //   the resolution of the device for the device context.
 270     //
 271
 272     hDC = GpiQueryDevice(hPS);
 273     DevQueryCaps( hDC, CAPS_HORIZONTAL_FONT_RES, (LONG)1, &lXFontResolution);
 274     DevQueryCaps( hDC, CAPS_VERTICAL_FONT_RES, (LONG)1, &lYFontResolution);
 275
 276     //
 277     //   Calculate the size of the character box, based on the
 278     //   point size selected and the resolution of the device.
 279     //   The size parameters are of type FIXED, NOT int.
 280     //   NOTE: 1 point == 1/72 of an inch.
 281     //
 282
 283     // multiply first to avoid getting vSizef.cx,cy = 0 since fxPointSize
 284     // is normally < 72 and FontResolution is typically ca. 100
 285     vSizef.cx = (FIXED)( (fxPointSize * lXFontResolution) / 72 );
 286     vSizef.cy = (FIXED)( (fxPointSize * lYFontResolution) / 72 );
 287
 288     if (pFattrs)
 289     {
 290         pFattrs->lMaxBaselineExt = MAKELONG( HIUSHORT( vSizef.cy ), 0 );
 291         pFattrs->lAveCharWidth   = MAKELONG( HIUSHORT( vSizef.cx ), 0 );
 292     }
 293     WinReleasePS(hPS);
 294
 295 } // end of wxConvertVectorPointSize
 296
 297 void wxFillLogFont( LOGFONT*      pFattrs,  // OS2 GPI FATTRS
 298                     PFACENAMEDESC pFaceName,
 299                     HPS*          phPS,
 300                     bool*         pbInternalPS,
 301                     long*         pflId,
 302                     wxString&     sFaceName,
 303                     wxFont*       pFont )
 304 {
 305     LONG         lNumFonts = 0L;       // For system font count
 306     ERRORID      vError;               // For logging API errors
 307     LONG         lTemp = 0L;
 308     bool         bInternalPS = false;  // if we have to create one
 309     PFONTMETRICS pFM = NULL;
 310
 311     //
 312     // Initial house cleaning to free data buffers and ensure we have a
 313     // functional PS to work with
 314     //
 315     if (!*phPS)
 316     {
 317         *phPS = ::WinGetPS(HWND_DESKTOP);
 318         bInternalPS = true;
 319     }
 320
 321     //
 322     // Determine the number of fonts.
 323     //
 324     if((lNumFonts = ::GpiQueryFonts( *phPS
 325                                     ,QF_PUBLIC | QF_PRIVATE
 326                                     ,NULL
 327                                     ,&lTemp
 328                                     ,(LONG) sizeof(FONTMETRICS)
 329                                     ,NULL
 330                                    )) < 0L)
 331     {
 332         ERRORID                     vError;
 333         wxString                    sError;
 334
 335         vError = ::WinGetLastError(wxGetInstance());
 336         sError = wxPMErrorToStr(vError);
 337         return;
 338     }
 339
 340     //
 341     // Allocate space for the font metrics.
 342     //
 343     pFM = new FONTMETRICS[lNumFonts + 1];
 344
 345     //
 346     // Retrieve the font metrics.
 347     //
 348     lTemp = lNumFonts;
 349     lTemp = ::GpiQueryFonts( *phPS
 350                             ,QF_PUBLIC
 351                             ,NULL
 352                             ,&lTemp
 353                             ,(LONG) sizeof(FONTMETRICS)
 354                             ,pFM
 355                            );
 356     pFont->SetFM( pFM
 357                  ,(int)lNumFonts
 358                 );
 359
 360     //
 361     // Initialize FATTR and FACENAMEDESC
 362     //
 363     pFattrs->usRecordLength = sizeof(FATTRS);
 364     pFattrs->fsFontUse = FATTR_FONTUSE_OUTLINE;       // only outline fonts allowed
 365     pFattrs->fsType = 0;
 366     pFattrs->lMaxBaselineExt = pFattrs->lAveCharWidth = 0;
 367     pFattrs->idRegistry = 0;
 368     pFattrs->lMatch = 0;
 369
 370     pFaceName->usSize = sizeof(FACENAMEDESC);
 371     pFaceName->usWeightClass = FWEIGHT_DONT_CARE;
 372     pFaceName->usWidthClass = FWIDTH_DONT_CARE;
 373     pFaceName->usReserved = 0;
 374     pFaceName->flOptions = 0;
 375
 376     //
 377     // This does the actual selection of fonts
 378     //
 379     wxOS2SelectMatchingFontByName( pFattrs
 380                                   ,pFaceName
 381                                   ,pFM
 382                                   ,(int)lNumFonts
 383                                   ,pFont
 384                                  );
 385     //
 386     // We should now have the correct FATTRS set with the selected
 387     // font, so now we need to generate an ID
 388     //
 389     long                            lNumLids = ::GpiQueryNumberSetIds(*phPS);
 390
 391     if(lNumLids )
 392     {
 393         long                        alTypes[255];
 394         STR8                        azNames[255];
 395         long                        alIds[255];
 396
 397         memset(alIds, 0, sizeof(long) * 255);
 398         if(!::GpiQuerySetIds( *phPS
 399                              ,lNumLids
 400                              ,alTypes
 401                              ,azNames
 402                              ,alIds
 403                             ))
 404         {
 405             if (bInternalPS)
 406                 ::WinReleasePS(*phPS);
 407             return;
 408         }
 409         if (*pflId == 0L)
 410             *pflId = 1L;
 411         for(unsigned long LCNum = 0; LCNum < (unsigned long)lNumLids; LCNum++)
 412             if(alIds[LCNum] == *pflId)
 413                ++*pflId;
 414         if(*pflId > 254)  // wow, no id available!
 415         {
 416             if (bInternalPS)
 417                ::WinReleasePS(*phPS);
 418            return;
 419         }
 420     }
 421     else
 422         *pflId = 1L;
 423     //
 424     // Release and delete the current font
 425     //
 426     ::GpiSetCharSet(*phPS, LCID_DEFAULT);/* release the font before deleting */
 427     ::GpiDeleteSetId(*phPS, 1L);         /* delete the logical font          */
 428
 429     //
 430     // Now build a facestring
 431     //
 432     char                            zFacename[128];
 433
 434     strcpy(zFacename, pFattrs->szFacename);
 435
 436     if(::GpiQueryFaceString( *phPS
 437                             ,zFacename
 438                             ,pFaceName
 439                             ,FACESIZE
 440                             ,pFattrs->szFacename
 441                            ) == GPI_ERROR)
 442     {
 443         vError = ::WinGetLastError(vHabmain);
 444     }
 445     sFaceName = (wxChar*)zFacename;
 446     *pbInternalPS = bInternalPS;
 447
 448     //
 449     // That's it, we now have everything we need to actually create the font
 450     //
 451 } // end of wxFillLogFont
 452
 453 void wxOS2SelectMatchingFontByName(
 454   PFATTRS                           pFattrs
 455 , PFACENAMEDESC                     pFaceName
 456 , PFONTMETRICS                      pFM
 457 , int                               nNumFonts
 458 , const wxFont*                     pFont
 459 )
 460 {
 461     int                             i;
 462     int                             nPointSize;
 463     int                             nIs;
 464     int                             nMinDiff0;
 465     int                             anDiff[16];
 466     int                             anMinDiff[16];
 467     int                             nIndex = 0;
 468     wxChar                          zFontFaceName[FACESIZE];
 469     wxString                        sFaceName;
 470     USHORT                          usWeightClass;
 471     int                             fsSelection = 0;
 472
 473     nMinDiff0 = 0xf000;
 474     for(i = 0;i < 16; i++)
 475         anMinDiff[i] = nMinDiff0;
 476
 477     switch (pFont->GetFamily())
 478     {
 479         case wxSCRIPT:
 480             sFaceName = wxT("Tms Rmn");
 481             break;
 482
 483         case wxDECORATIVE:
 484             sFaceName = wxT("WarpSans");
 485             break;
 486
 487         case wxROMAN:
 488             sFaceName = wxT("Tms Rmn");
 489             break;
 490
 491         case wxTELETYPE:
 492             sFaceName = wxT("Courier") ;
 493             break;
 494
 495         case wxMODERN:
 496             sFaceName = wxT("System VIO") ;
 497             break;
 498
 499         case wxSWISS:
 500             sFaceName = wxT("Helv") ;
 501             break;
 502
 503         case wxDEFAULT:
 504         default:
 505             sFaceName = wxT("System VIO") ;
 506     }
 507
 508     switch (pFont->GetWeight())
 509     {
 510         default:
 511             wxFAIL_MSG(wxT("unknown font weight"));
 512             // fall through
 513             usWeightClass = FWEIGHT_DONT_CARE;
 514             break;
 515
 516         case wxNORMAL:
 517             usWeightClass = FWEIGHT_NORMAL;
 518             break;
 519
 520         case wxLIGHT:
 521             usWeightClass = FWEIGHT_LIGHT;
 522             break;
 523
 524         case wxBOLD:
 525             usWeightClass = FWEIGHT_BOLD;
 526             break;
 527
 528          case wxFONTWEIGHT_MAX:
 529             usWeightClass = FWEIGHT_ULTRA_BOLD;
 530             break;
 531     }
 532     pFaceName->usWeightClass = usWeightClass;
 533
 534     switch (pFont->GetStyle())
 535     {
 536         case wxITALIC:
 537         case wxSLANT:
 538             fsSelection = FM_SEL_ITALIC;
 539             pFaceName->flOptions = FTYPE_ITALIC;
 540             break;
 541
 542         default:
 543             wxFAIL_MSG(wxT("unknown font slant"));
 544             // fall through
 545
 546         case wxNORMAL:
 547             fsSelection  = 0;
 548             break;
 549     }
 550
 551     wxStrlcpy(zFontFaceName, sFaceName.c_str(), WXSIZEOF(zFontFaceName));
 552     nPointSize = pFont->GetPointSize();
 553
 554     //
 555     // Matching logic to find the right FM struct
 556     //
 557     nIndex = 0;
 558     for(i = 0, nIs = 0; i < nNumFonts; i++)
 559     {
 560         anDiff[0] = wxGpiStrcmp((wxChar*)pFM[i].szFacename, zFontFaceName);
 561         anDiff[1] = abs(pFM[i].lEmHeight - nPointSize);
 562         anDiff[2] = abs(pFM[i].usWeightClass -  usWeightClass);
 563         anDiff[3] = abs((pFM[i].fsSelection & 0x2f) -  fsSelection);
 564         if(anDiff[0] == 0)
 565         {
 566             if( (nIs & 0x01) == 0)
 567             {
 568                 nIs = 1;
 569                 nIndex = i;
 570                 anMinDiff[1] = anDiff[1];
 571                 anMinDiff[2] = anDiff[2];
 572                 anMinDiff[3] = anDiff[3];
 573             }
 574             else if(anDiff[3] < anMinDiff[3])
 575             {
 576                 nIndex = i;
 577                 anMinDiff[3] = anDiff[3];
 578             }
 579             else if(anDiff[2] < anMinDiff[2])
 580             {
 581                 nIndex = i;
 582                 anMinDiff[2] = anDiff[2];
 583             }
 584             else if(anDiff[1] < anMinDiff[1])
 585             {
 586                 nIndex = i;
 587                 anMinDiff[1] = anDiff[1];
 588             }
 589             anMinDiff[0] = 0;
 590         }
 591         else if(anDiff[0] < anMinDiff[0])
 592         {
 593               nIs = 2;
 594               nIndex = i;
 595               anMinDiff[3] = anDiff[3];
 596               anMinDiff[2] = anDiff[2];
 597               anMinDiff[1] = anDiff[1];
 598               anMinDiff[0] = anDiff[0];
 599         }
 600         else if(anDiff[0] == anMinDiff[0])
 601         {
 602             if(anDiff[3] < anMinDiff[3])
 603             {
 604                 nIndex = i;
 605                 anMinDiff[3] = anDiff[3];
 606                 nIs = 2;
 607             }
 608             else if(anDiff[2] < anMinDiff[2])
 609             {
 610                 nIndex = i;
 611                 anMinDiff[2] = anDiff[2];
 612                 nIs = 2;
 613             }
 614             else if(anDiff[1] < anMinDiff[1])
 615             {
 616                 nIndex = i;
 617                 anMinDiff[1] = anDiff[1];
 618                 nIs = 2;
 619             }
 620         }
 621     }
 622
 623     //
 624     // Fill in the FATTRS with the best match from FONTMETRICS
 625     //
 626     pFattrs->usRecordLength  = sizeof(FATTRS);              // Sets size of structure
 627     pFattrs->lMatch          = pFM[nIndex].lMatch;          // Force match
 628     pFattrs->idRegistry      = 0;
 629     pFattrs->usCodePage      = 0;
 630     pFattrs->fsFontUse       = 0;
 631     pFattrs->fsType          = 0;
 632     pFattrs->lMaxBaselineExt = 0;
 633     pFattrs->lAveCharWidth   = 0;
 634     wxStrcpy((wxChar*)pFattrs->szFacename, (wxChar*)pFM[nIndex].szFacename);
 635     if (pFont->GetWeight() == wxNORMAL)
 636         pFattrs->fsSelection = 0;
 637     else
 638         pFattrs->fsSelection = FATTR_SEL_BOLD;
 639
 640     if (pFont->GetStyle() == wxITALIC || pFont->GetStyle() == wxSLANT)
 641         pFattrs->fsSelection |= FATTR_SEL_ITALIC;
 642
 643     if (pFont->GetUnderlined())
 644         pFattrs->fsSelection |= FATTR_SEL_UNDERSCORE;
 645 } // end of wxOS2SelectMatchingFontByName
 646
 647 wxFont wxCreateFontFromLogFont(
 648   const LOGFONT*                    pLogFont
 649 , const PFONTMETRICS                pFM
 650 , PFACENAMEDESC                     pFaceName
 651 )
 652 {
 653     wxNativeFontInfo                vInfo;
 654
 655     vInfo.fa = *pLogFont;
 656     vInfo.fm = *pFM;
 657     vInfo.fn = *pFaceName;
 658     return wxFont(vInfo);
 659 } // end of wxCreateFontFromLogFont
 660
 661 int wxGpiStrcmp(
 662   wxChar*                           s0
 663 , wxChar*                           s1
 664 )
 665 {   int                             l0;
 666     int                             l1;
 667     int                             l;
 668     int                             d;
 669     int                             d1;
 670     int                             i;
 671     int                             rc;
 672
 673     rc = 0;
 674     if(s0 == NULL)
 675     {
 676         if(s1 == NULL)
 677             return 0;
 678         else
 679             return 32;
 680     }
 681     else if(s1 == NULL)
 682         return 32;
 683
 684     l0 = wxStrlen(s0);
 685     l1 = wxStrlen(s1);
 686     l  = l0;
 687     if(l0 != l1)
 688     {
 689         rc++;
 690         if(l1 < l0)
 691             l = l1;
 692     }
 693     for(i=0;i<l;i++)
 694     {
 695         d = s0[i]-s1[i];
 696         if(!d)
 697             continue;
 698         d1 = wxToupper(s0[i]) - wxToupper(s1[i]);
 699         if(!d1)
 700             continue;
 701         rc += abs(d);
 702     }
 703     return rc;
 704 }