git.oblomov.eu Git - wine/blob - dlls/wineps/font.c

   1 /*
   2  *      PostScript driver font functions
   3  *
   4  *      Copyright 1998  Huw D M Davies
   5  *
   6  */
   7 #include <string.h>
   8 #include <stdlib.h>         /* for bsearch() */
   9 #include "winspool.h"
  10 #include "psdrv.h"
  11 #include "debugtools.h"
  12 #include "winerror.h"
  13
  14 DEFAULT_DEBUG_CHANNEL(psdrv);
  15
  16 /***********************************************************************
  17  *           is_stock_font
  18  */
  19 inline static BOOL is_stock_font( HFONT font )
  20 {
  21     int i;
  22     for (i = OEM_FIXED_FONT; i <= DEFAULT_GUI_FONT; i++)
  23     {
  24         if (i != DEFAULT_PALETTE && font == GetStockObject(i)) return TRUE;
  25     }
  26     return FALSE;
  27 }
  28
  29
  30 /*******************************************************************************
  31  *  ScaleFont
  32  *
  33  *  Scale font to requested lfHeight
  34  *
  35  */
  36 inline static float round(float f)
  37 {
  38     return (f > 0) ? (f + 0.5) : (f - 0.5);
  39 }
  40
  41 static VOID ScaleFont(const AFM *afm, LONG lfHeight, PSFONT *font,
  42         TEXTMETRICW *tm)
  43 {
  44     const WINMETRICS    *wm = &(afm->WinMetrics);
  45     USHORT              usUnitsPerEm, usWinAscent, usWinDescent;
  46     SHORT               sAscender, sDescender, sLineGap, sTypoAscender;
  47     SHORT               sTypoDescender, sTypoLineGap, sAvgCharWidth;
  48
  49     TRACE("'%s' %li\n", afm->FontName, lfHeight);
  50
  51     if (lfHeight < 0)                                   /* match em height */
  52     {
  53         font->scale = - ((float)lfHeight / (float)(wm->usUnitsPerEm));
  54     }
  55     else                                                /* match cell height */
  56     {
  57         font->scale = (float)lfHeight /
  58                 (float)(wm->usWinAscent + wm->usWinDescent);
  59     }
  60
  61     font->size = (INT)round(font->scale * (float)wm->usUnitsPerEm);
  62     font->set = FALSE;
  63
  64     usUnitsPerEm = (USHORT)round((float)(wm->usUnitsPerEm) * font->scale);
  65     sAscender = (SHORT)round((float)(wm->sAscender) * font->scale);
  66     sDescender = (SHORT)round((float)(wm->sDescender) * font->scale);
  67     sLineGap = (SHORT)round((float)(wm->sLineGap) * font->scale);
  68     sTypoAscender = (SHORT)round((float)(wm->sTypoAscender) * font->scale);
  69     sTypoDescender = (SHORT)round((float)(wm->sTypoDescender) * font->scale);
  70     sTypoLineGap = (SHORT)round((float)(wm->sTypoLineGap) * font->scale);
  71     usWinAscent = (USHORT)round((float)(wm->usWinAscent) * font->scale);
  72     usWinDescent = (USHORT)round((float)(wm->usWinDescent) * font->scale);
  73     sAvgCharWidth = (SHORT)round((float)(wm->sAvgCharWidth) * font->scale);
  74
  75     tm->tmAscent = (LONG)usWinAscent;
  76     tm->tmDescent = (LONG)usWinDescent;
  77     tm->tmHeight = tm->tmAscent + tm->tmDescent;
  78
  79     tm->tmInternalLeading = tm->tmHeight - (LONG)usUnitsPerEm;
  80     if (tm->tmInternalLeading < 0)
  81         tm->tmInternalLeading = 0;
  82
  83     tm->tmExternalLeading =
  84             (LONG)(sAscender - sDescender + sLineGap) - tm->tmHeight;
  85     if (tm->tmExternalLeading < 0)
  86         tm->tmExternalLeading = 0;
  87
  88     tm->tmAveCharWidth = (LONG)sAvgCharWidth;
  89
  90     tm->tmWeight = afm->Weight;
  91     tm->tmItalic = (afm->ItalicAngle != 0.0);
  92     tm->tmUnderlined = 0;
  93     tm->tmStruckOut = 0;
  94     tm->tmFirstChar = (WCHAR)(afm->Metrics[0].UV);
  95     tm->tmLastChar = (WCHAR)(afm->Metrics[afm->NumofMetrics - 1].UV);
  96     tm->tmDefaultChar = 0x001f;         /* Win2K does this - FIXME? */
  97     tm->tmBreakChar = tm->tmFirstChar;          /* should be 'space' */
  98
  99     tm->tmPitchAndFamily = TMPF_DEVICE | TMPF_VECTOR;
 100     if (!afm->IsFixedPitch)
 101         tm->tmPitchAndFamily |= TMPF_FIXED_PITCH;   /* yes, it's backwards */
 102     if (wm->usUnitsPerEm != 1000)
 103         tm->tmPitchAndFamily |= TMPF_TRUETYPE;
 104
 105     tm->tmCharSet = ANSI_CHARSET;       /* FIXME */
 106     tm->tmOverhang = 0;
 107
 108     /*
 109      *  This is kludgy.  font->scale is used in several places in the driver
 110      *  to adjust PostScript-style metrics.  Since these metrics have been
 111      *  "normalized" to an em-square size of 1000, font->scale needs to be
 112      *  similarly adjusted..
 113      */
 114
 115     font->scale *= (float)wm->usUnitsPerEm / 1000.0;
 116
 117     tm->tmMaxCharWidth = (LONG)round(
 118             (afm->FontBBox.urx - afm->FontBBox.llx) * font->scale);
 119
 120     TRACE("Selected PS font '%s' size %d weight %ld.\n", afm->FontName,
 121             font->size, tm->tmWeight );
 122     TRACE("H = %ld As = %ld Des = %ld IL = %ld EL = %ld\n", tm->tmHeight,
 123             tm->tmAscent, tm->tmDescent, tm->tmInternalLeading,
 124             tm->tmExternalLeading);
 125 }
 126
 127 /***********************************************************************
 128  *           PSDRV_FONT_SelectObject
 129  */
 130 HFONT PSDRV_FONT_SelectObject( DC * dc, HFONT hfont )
 131 {
 132     LOGFONTW lf;
 133     PSDRV_PDEVICE *physDev = (PSDRV_PDEVICE *)dc->physDev;
 134     BOOL bd = FALSE, it = FALSE;
 135     AFMLISTENTRY *afmle;
 136     FONTFAMILY *family;
 137     char FaceName[LF_FACESIZE];
 138
 139     if (!GetObjectW( hfont, sizeof(lf), &lf )) return 0;
 140
 141     TRACE("FaceName = %s Height = %ld Italic = %d Weight = %ld\n",
 142           debugstr_w(lf.lfFaceName), lf.lfHeight, lf.lfItalic,
 143           lf.lfWeight);
 144
 145     if(lf.lfItalic)
 146         it = TRUE;
 147     if(lf.lfWeight > 550)
 148         bd = TRUE;
 149     WideCharToMultiByte(CP_ACP, 0, lf.lfFaceName, -1,
 150                         FaceName, sizeof(FaceName), NULL, NULL);
 151
 152     if(FaceName[0] == '\0') {
 153         switch(lf.lfPitchAndFamily & 0xf0) {
 154         case FF_DONTCARE:
 155             break;
 156         case FF_ROMAN:
 157         case FF_SCRIPT:
 158             strcpy(FaceName, "Times");
 159             break;
 160         case FF_SWISS:
 161             strcpy(FaceName, "Helvetica");
 162             break;
 163         case FF_MODERN:
 164             strcpy(FaceName, "Courier");
 165             break;
 166         case FF_DECORATIVE:
 167             strcpy(FaceName, "Symbol");
 168             break;
 169         }
 170     }
 171
 172     if(FaceName[0] == '\0') {
 173         switch(lf.lfPitchAndFamily & 0x0f) {
 174         case VARIABLE_PITCH:
 175             strcpy(FaceName, "Times");
 176             break;
 177         default:
 178             strcpy(FaceName, "Courier");
 179             break;
 180         }
 181     }
 182
 183     if (physDev->pi->FontSubTableSize != 0)
 184     {
 185         DWORD i;
 186
 187         for (i = 0; i < physDev->pi->FontSubTableSize; ++i)
 188         {
 189             if (!strcasecmp (FaceName,
 190                     physDev->pi->FontSubTable[i].pValueName))
 191             {
 192                 TRACE ("substituting facename '%s' for '%s'\n",
 193                         (LPSTR) physDev->pi->FontSubTable[i].pData, FaceName);
 194                 if (strlen ((LPSTR) physDev->pi->FontSubTable[i].pData) <
 195                         LF_FACESIZE)
 196                     strcpy (FaceName,
 197                             (LPSTR) physDev->pi->FontSubTable[i].pData);
 198                 else
 199                     WARN ("Facename '%s' is too long; ignoring substitution\n",
 200                             (LPSTR) physDev->pi->FontSubTable[i].pData);
 201                 break;
 202             }
 203         }
 204     }
 205
 206     TRACE("Trying to find facename '%s'\n", FaceName);
 207
 208     /* Look for a matching font family */
 209     for(family = physDev->pi->Fonts; family; family = family->next) {
 210         if(!strcasecmp(FaceName, family->FamilyName))
 211             break;
 212     }
 213     if(!family) {
 214         /* Fallback for Window's font families to common PostScript families */
 215         if(!strcmp(FaceName, "Arial"))
 216             strcpy(FaceName, "Helvetica");
 217         else if(!strcmp(FaceName, "System"))
 218             strcpy(FaceName, "Helvetica");
 219         else if(!strcmp(FaceName, "Times New Roman"))
 220             strcpy(FaceName, "Times");
 221         else if(!strcmp(FaceName, "Courier New"))
 222             strcpy(FaceName, "Courier");
 223
 224         for(family = physDev->pi->Fonts; family; family = family->next) {
 225             if(!strcmp(FaceName, family->FamilyName))
 226                 break;
 227         }
 228     }
 229     /* If all else fails, use the first font defined for the printer */
 230     if(!family)
 231         family = physDev->pi->Fonts;
 232
 233     TRACE("Got family '%s'\n", family->FamilyName);
 234
 235     for(afmle = family->afmlist; afmle; afmle = afmle->next) {
 236         if( (bd == (afmle->afm->Weight == FW_BOLD)) &&
 237             (it == (afmle->afm->ItalicAngle != 0.0)) )
 238                 break;
 239     }
 240     if(!afmle)
 241         afmle = family->afmlist; /* not ideal */
 242
 243     TRACE("Got font '%s'\n", afmle->afm->FontName);
 244
 245     physDev->font.afm = afmle->afm;
 246     /* stock fonts ignore the mapping mode */
 247     if (!is_stock_font( hfont )) lf.lfHeight = INTERNAL_YWSTODS(dc, lf.lfHeight);
 248     ScaleFont(physDev->font.afm, lf.lfHeight,
 249             &(physDev->font), &(physDev->font.tm));
 250
 251     physDev->font.escapement = lf.lfEscapement;
 252
 253     /* Does anyone know if these are supposed to be reversed like this? */
 254
 255     physDev->font.tm.tmDigitizedAspectX = physDev->logPixelsY;
 256     physDev->font.tm.tmDigitizedAspectY = physDev->logPixelsX;
 257
 258     return TRUE; /* We'll use a device font for now */
 259 }
 260
 261 /***********************************************************************
 262  *           PSDRV_GetTextMetrics
 263  */
 264 BOOL PSDRV_GetTextMetrics(DC *dc, TEXTMETRICW *metrics)
 265 {
 266     PSDRV_PDEVICE *physDev = (PSDRV_PDEVICE *)dc->physDev;
 267
 268     memcpy(metrics, &(physDev->font.tm), sizeof(physDev->font.tm));
 269     return TRUE;
 270 }
 271
 272 /******************************************************************************
 273  *      PSDRV_UVMetrics
 274  *
 275  *  Find the AFMMETRICS for a given UV.  Returns first glyph in the font
 276  *  (space?) if the font does not have a glyph for the given UV.
 277  */
 278 static int MetricsByUV(const void *a, const void *b)
 279 {
 280     return (int)(((const AFMMETRICS *)a)->UV - ((const AFMMETRICS *)b)->UV);
 281 }
 282
 283 const AFMMETRICS *PSDRV_UVMetrics(LONG UV, const AFM *afm)
 284 {
 285     AFMMETRICS          key;
 286     const AFMMETRICS    *needle;
 287
 288     /*
 289      *  Ugly work-around for symbol fonts.  Wine is sending characters which
 290      *  belong in the Unicode private use range (U+F020 - U+F0FF) as ASCII
 291      *  characters (U+0020 - U+00FF).
 292      */
 293
 294     if ((afm->Metrics->UV & 0xff00) == 0xf000 && UV < 0x100)
 295         UV |= 0xf000;
 296
 297     key.UV = UV;
 298
 299     needle = bsearch(&key, afm->Metrics, afm->NumofMetrics, sizeof(AFMMETRICS),
 300             MetricsByUV);
 301
 302     if (needle == NULL)
 303     {
 304         WARN("No glyph for U+%.4lX in %s\n", UV, afm->FontName);
 305         needle = afm->Metrics;
 306     }
 307
 308     return needle;
 309 }
 310
 311 /***********************************************************************
 312  *           PSDRV_GetTextExtentPoint
 313  */
 314 BOOL PSDRV_GetTextExtentPoint(DC *dc, LPCWSTR str, INT count, LPSIZE size)
 315 {
 316     PSDRV_PDEVICE   *physDev = (PSDRV_PDEVICE *)dc->physDev;
 317     int             i;
 318     float           width = 0.0;
 319
 320     TRACE("%s %i\n", debugstr_wn(str, count), count);
 321
 322     for (i = 0; i < count && str[i] != '\0'; ++i)
 323         width += PSDRV_UVMetrics(str[i], physDev->font.afm)->WX;
 324
 325     width *= physDev->font.scale;
 326
 327     size->cx = GDI_ROUND((FLOAT)width * dc->xformVport2World.eM11);
 328     size->cy = GDI_ROUND((FLOAT)physDev->font.tm.tmHeight *
 329             dc->xformVport2World.eM22);
 330
 331     TRACE("cx=%li cy=%li\n", size->cx, size->cy);
 332
 333     return TRUE;
 334 }
 335
 336 /***********************************************************************
 337  *           PSDRV_GetCharWidth
 338  */
 339 BOOL PSDRV_GetCharWidth(DC *dc, UINT firstChar, UINT lastChar, LPINT buffer)
 340 {
 341     PSDRV_PDEVICE   *physDev = (PSDRV_PDEVICE *)dc->physDev;
 342     UINT            i;
 343
 344     TRACE("U+%.4X U+%.4X\n", firstChar, lastChar);
 345
 346     if (lastChar > 0xffff || firstChar > lastChar)
 347     {
 348         SetLastError(ERROR_INVALID_PARAMETER);
 349         return FALSE;
 350     }
 351
 352     for (i = firstChar; i <= lastChar; ++i)
 353     {
 354         *buffer = GDI_ROUND(PSDRV_UVMetrics(i, physDev->font.afm)->WX
 355                 * physDev->font.scale);
 356         TRACE("U+%.4X: %i\n", i, *buffer);
 357         ++buffer;
 358     }
 359
 360     return TRUE;
 361 }
 362
 363 /***********************************************************************
 364  *           PSDRV_SetFont
 365  */
 366 BOOL PSDRV_SetFont( DC *dc )
 367 {
 368     PSDRV_PDEVICE *physDev = (PSDRV_PDEVICE *)dc->physDev;
 369
 370     PSDRV_WriteSetColor(dc, &physDev->font.color);
 371     if(physDev->font.set) return TRUE;
 372
 373     PSDRV_WriteSetFont(dc);
 374     physDev->font.set = TRUE;
 375     return TRUE;
 376 }
 377
 378
 379 /***********************************************************************
 380  *           PSDRV_GetFontMetric
 381  */
 382 static UINT PSDRV_GetFontMetric(HDC hdc, const AFM *afm,
 383         NEWTEXTMETRICEXW *ntmx, ENUMLOGFONTEXW *elfx)
 384 {
 385     /* ntmx->ntmTm is NEWTEXTMETRICW; compatible w/ TEXTMETRICW per Win32 doc */
 386
 387     TEXTMETRICW     *tm = (TEXTMETRICW *)&(ntmx->ntmTm);
 388     LOGFONTW        *lf = &(elfx->elfLogFont);
 389     PSFONT          font;
 390
 391     memset(ntmx, 0, sizeof(*ntmx));
 392     memset(elfx, 0, sizeof(*elfx));
 393
 394     ScaleFont(afm, -(LONG)(afm->WinMetrics.usUnitsPerEm), &font, tm);
 395
 396     lf->lfHeight = tm->tmHeight;
 397     lf->lfWidth = tm->tmAveCharWidth;
 398     lf->lfWeight = tm->tmWeight;
 399     lf->lfItalic = tm->tmItalic;
 400     lf->lfCharSet = tm->tmCharSet;
 401
 402     lf->lfPitchAndFamily = (afm->IsFixedPitch) ? FIXED_PITCH : VARIABLE_PITCH;
 403
 404     MultiByteToWideChar(CP_ACP, 0, afm->FamilyName, -1, lf->lfFaceName,
 405             LF_FACESIZE);
 406
 407     return DEVICE_FONTTYPE;
 408 }
 409
 410 /***********************************************************************
 411  *           PSDRV_EnumDeviceFonts
 412  */
 413 BOOL PSDRV_EnumDeviceFonts( HDC hdc, LPLOGFONTW plf,
 414                             DEVICEFONTENUMPROC proc, LPARAM lp )
 415 {
 416     ENUMLOGFONTEXW      lf;
 417     NEWTEXTMETRICEXW    tm;
 418     BOOL                b, bRet = 0;
 419     AFMLISTENTRY        *afmle;
 420     FONTFAMILY          *family;
 421     PSDRV_PDEVICE       *physDev;
 422     char                FaceName[LF_FACESIZE];
 423     DC *dc = DC_GetDCPtr( hdc );
 424     if (!dc) return FALSE;
 425
 426     physDev = (PSDRV_PDEVICE *)dc->physDev;
 427     /* FIXME!! should reevaluate dc->physDev after every callback */
 428     GDI_ReleaseObj( hdc );
 429
 430     if( plf->lfFaceName[0] ) {
 431         WideCharToMultiByte(CP_ACP, 0, plf->lfFaceName, -1,
 432                           FaceName, sizeof(FaceName), NULL, NULL);
 433         TRACE("lfFaceName = '%s'\n", FaceName);
 434         for(family = physDev->pi->Fonts; family; family = family->next) {
 435             if(!strncmp(FaceName, family->FamilyName,
 436                         strlen(family->FamilyName)))
 437                 break;
 438         }
 439         if(family) {
 440             for(afmle = family->afmlist; afmle; afmle = afmle->next) {
 441                 TRACE("Got '%s'\n", afmle->afm->FontName);
 442                 if( (b = (*proc)( &lf, &tm,
 443                         PSDRV_GetFontMetric( hdc, afmle->afm, &tm, &lf ),
 444                                   lp )) )
 445                      bRet = b;
 446                 else break;
 447             }
 448         }
 449     } else {
 450
 451         TRACE("lfFaceName = NULL\n");
 452         for(family = physDev->pi->Fonts; family; family = family->next) {
 453             afmle = family->afmlist;
 454             TRACE("Got '%s'\n", afmle->afm->FontName);
 455             if( (b = (*proc)( &lf, &tm,
 456                    PSDRV_GetFontMetric( hdc, afmle->afm, &tm, &lf ),
 457                               lp )) )
 458                 bRet = b;
 459             else break;
 460         }
 461     }
 462     return bRet;
 463 }