dlls/wineps/font.c

   1 /*
   2  *      PostScript driver font functions
   3  *
   4  *      Copyright 1998  Huw D M Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #include <string.h>
  21 #include <stdlib.h>         /* for bsearch() */
  22 #include "winspool.h"
  23 #include "gdi.h"
  24 #include "psdrv.h"
  25 #include "wine/debug.h"
  26 #include "winerror.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  29
  30 /***********************************************************************
  31  *           is_stock_font
  32  */
  33 inline static BOOL is_stock_font( HFONT font )
  34 {
  35     int i;
  36     for (i = OEM_FIXED_FONT; i <= DEFAULT_GUI_FONT; i++)
  37     {
  38         if (i != DEFAULT_PALETTE && font == GetStockObject(i)) return TRUE;
  39     }
  40     return FALSE;
  41 }
  42
  43
  44 /*******************************************************************************
  45  *  ScaleFont
  46  *
  47  *  Scale font to requested lfHeight
  48  *
  49  */
  50 inline static float round(float f)
  51 {
  52     return (f > 0) ? (f + 0.5) : (f - 0.5);
  53 }
  54
  55 static VOID ScaleFont(const AFM *afm, LONG lfHeight, PSFONT *font,
  56         TEXTMETRICW *tm)
  57 {
  58     const WINMETRICS    *wm = &(afm->WinMetrics);
  59     USHORT              usUnitsPerEm, usWinAscent, usWinDescent;
  60     SHORT               sAscender, sDescender, sLineGap, sTypoAscender;
  61     SHORT               sTypoDescender, sTypoLineGap, sAvgCharWidth;
  62
  63     TRACE("'%s' %li\n", afm->FontName, lfHeight);
  64
  65     if (lfHeight < 0)                                   /* match em height */
  66     {
  67         font->scale = - ((float)lfHeight / (float)(wm->usUnitsPerEm));
  68     }
  69     else                                                /* match cell height */
  70     {
  71         font->scale = (float)lfHeight /
  72                 (float)(wm->usWinAscent + wm->usWinDescent);
  73     }
  74
  75     font->size = (INT)round(font->scale * (float)wm->usUnitsPerEm);
  76     font->set = FALSE;
  77
  78     usUnitsPerEm = (USHORT)round((float)(wm->usUnitsPerEm) * font->scale);
  79     sAscender = (SHORT)round((float)(wm->sAscender) * font->scale);
  80     sDescender = (SHORT)round((float)(wm->sDescender) * font->scale);
  81     sLineGap = (SHORT)round((float)(wm->sLineGap) * font->scale);
  82     sTypoAscender = (SHORT)round((float)(wm->sTypoAscender) * font->scale);
  83     sTypoDescender = (SHORT)round((float)(wm->sTypoDescender) * font->scale);
  84     sTypoLineGap = (SHORT)round((float)(wm->sTypoLineGap) * font->scale);
  85     usWinAscent = (USHORT)round((float)(wm->usWinAscent) * font->scale);
  86     usWinDescent = (USHORT)round((float)(wm->usWinDescent) * font->scale);
  87     sAvgCharWidth = (SHORT)round((float)(wm->sAvgCharWidth) * font->scale);
  88
  89     tm->tmAscent = (LONG)usWinAscent;
  90     tm->tmDescent = (LONG)usWinDescent;
  91     tm->tmHeight = tm->tmAscent + tm->tmDescent;
  92
  93     tm->tmInternalLeading = tm->tmHeight - (LONG)usUnitsPerEm;
  94     if (tm->tmInternalLeading < 0)
  95         tm->tmInternalLeading = 0;
  96
  97     tm->tmExternalLeading =
  98             (LONG)(sAscender - sDescender + sLineGap) - tm->tmHeight;
  99     if (tm->tmExternalLeading < 0)
 100         tm->tmExternalLeading = 0;
 101
 102     tm->tmAveCharWidth = (LONG)sAvgCharWidth;
 103
 104     tm->tmWeight = afm->Weight;
 105     tm->tmItalic = (afm->ItalicAngle != 0.0);
 106     tm->tmUnderlined = 0;
 107     tm->tmStruckOut = 0;
 108     tm->tmFirstChar = (WCHAR)(afm->Metrics[0].UV);
 109     tm->tmLastChar = (WCHAR)(afm->Metrics[afm->NumofMetrics - 1].UV);
 110     tm->tmDefaultChar = 0x001f;         /* Win2K does this - FIXME? */
 111     tm->tmBreakChar = tm->tmFirstChar;          /* should be 'space' */
 112
 113     tm->tmPitchAndFamily = TMPF_DEVICE | TMPF_VECTOR;
 114     if (!afm->IsFixedPitch)
 115         tm->tmPitchAndFamily |= TMPF_FIXED_PITCH;   /* yes, it's backwards */
 116     if (wm->usUnitsPerEm != 1000)
 117         tm->tmPitchAndFamily |= TMPF_TRUETYPE;
 118
 119     tm->tmCharSet = ANSI_CHARSET;       /* FIXME */
 120     tm->tmOverhang = 0;
 121
 122     /*
 123      *  This is kludgy.  font->scale is used in several places in the driver
 124      *  to adjust PostScript-style metrics.  Since these metrics have been
 125      *  "normalized" to an em-square size of 1000, font->scale needs to be
 126      *  similarly adjusted..
 127      */
 128
 129     font->scale *= (float)wm->usUnitsPerEm / 1000.0;
 130
 131     tm->tmMaxCharWidth = (LONG)round(
 132             (afm->FontBBox.urx - afm->FontBBox.llx) * font->scale);
 133
 134     TRACE("Selected PS font '%s' size %d weight %ld.\n", afm->FontName,
 135             font->size, tm->tmWeight );
 136     TRACE("H = %ld As = %ld Des = %ld IL = %ld EL = %ld\n", tm->tmHeight,
 137             tm->tmAscent, tm->tmDescent, tm->tmInternalLeading,
 138             tm->tmExternalLeading);
 139 }
 140
 141 /***********************************************************************
 142  *           SelectFont   (WINEPS.@)
 143  */
 144 HFONT PSDRV_SelectFont( PSDRV_PDEVICE *physDev, HFONT hfont )
 145 {
 146     LOGFONTW lf;
 147     BOOL bd = FALSE, it = FALSE;
 148     AFMLISTENTRY *afmle;
 149     FONTFAMILY *family;
 150     char FaceName[LF_FACESIZE];
 151
 152     if (!GetObjectW( hfont, sizeof(lf), &lf )) return 0;
 153
 154     TRACE("FaceName = %s Height = %ld Italic = %d Weight = %ld\n",
 155           debugstr_w(lf.lfFaceName), lf.lfHeight, lf.lfItalic,
 156           lf.lfWeight);
 157
 158     if(lf.lfItalic)
 159         it = TRUE;
 160     if(lf.lfWeight > 550)
 161         bd = TRUE;
 162     WideCharToMultiByte(CP_ACP, 0, lf.lfFaceName, -1,
 163                         FaceName, sizeof(FaceName), NULL, NULL);
 164
 165     if(FaceName[0] == '\0') {
 166         switch(lf.lfPitchAndFamily & 0xf0) {
 167         case FF_DONTCARE:
 168             break;
 169         case FF_ROMAN:
 170         case FF_SCRIPT:
 171             strcpy(FaceName, "Times");
 172             break;
 173         case FF_SWISS:
 174             strcpy(FaceName, "Helvetica");
 175             break;
 176         case FF_MODERN:
 177             strcpy(FaceName, "Courier");
 178             break;
 179         case FF_DECORATIVE:
 180             strcpy(FaceName, "Symbol");
 181             break;
 182         }
 183     }
 184
 185     if(FaceName[0] == '\0') {
 186         switch(lf.lfPitchAndFamily & 0x0f) {
 187         case VARIABLE_PITCH:
 188             strcpy(FaceName, "Times");
 189             break;
 190         default:
 191             strcpy(FaceName, "Courier");
 192             break;
 193         }
 194     }
 195
 196     if (physDev->pi->FontSubTableSize != 0)
 197     {
 198         DWORD i;
 199
 200         for (i = 0; i < physDev->pi->FontSubTableSize; ++i)
 201         {
 202             if (!strcasecmp (FaceName,
 203                     physDev->pi->FontSubTable[i].pValueName))
 204             {
 205                 TRACE ("substituting facename '%s' for '%s'\n",
 206                         (LPSTR) physDev->pi->FontSubTable[i].pData, FaceName);
 207                 if (strlen ((LPSTR) physDev->pi->FontSubTable[i].pData) <
 208                         LF_FACESIZE)
 209                     strcpy (FaceName,
 210                             (LPSTR) physDev->pi->FontSubTable[i].pData);
 211                 else
 212                     WARN ("Facename '%s' is too long; ignoring substitution\n",
 213                             (LPSTR) physDev->pi->FontSubTable[i].pData);
 214                 break;
 215             }
 216         }
 217     }
 218
 219     TRACE("Trying to find facename '%s'\n", FaceName);
 220
 221     /* Look for a matching font family */
 222     for(family = physDev->pi->Fonts; family; family = family->next) {
 223         if(!strcasecmp(FaceName, family->FamilyName))
 224             break;
 225     }
 226     if(!family) {
 227         /* Fallback for Window's font families to common PostScript families */
 228         if(!strcmp(FaceName, "Arial"))
 229             strcpy(FaceName, "Helvetica");
 230         else if(!strcmp(FaceName, "System"))
 231             strcpy(FaceName, "Helvetica");
 232         else if(!strcmp(FaceName, "Times New Roman"))
 233             strcpy(FaceName, "Times");
 234         else if(!strcmp(FaceName, "Courier New"))
 235             strcpy(FaceName, "Courier");
 236
 237         for(family = physDev->pi->Fonts; family; family = family->next) {
 238             if(!strcmp(FaceName, family->FamilyName))
 239                 break;
 240         }
 241     }
 242     /* If all else fails, use the first font defined for the printer */
 243     if(!family)
 244         family = physDev->pi->Fonts;
 245
 246     TRACE("Got family '%s'\n", family->FamilyName);
 247
 248     for(afmle = family->afmlist; afmle; afmle = afmle->next) {
 249         if( (bd == (afmle->afm->Weight == FW_BOLD)) &&
 250             (it == (afmle->afm->ItalicAngle != 0.0)) )
 251                 break;
 252     }
 253     if(!afmle)
 254         afmle = family->afmlist; /* not ideal */
 255
 256     TRACE("Got font '%s'\n", afmle->afm->FontName);
 257
 258     physDev->font.afm = afmle->afm;
 259     /* stock fonts ignore the mapping mode */
 260     if (!is_stock_font( hfont )) lf.lfHeight = INTERNAL_YWSTODS(physDev->dc, lf.lfHeight);
 261     ScaleFont(physDev->font.afm, lf.lfHeight,
 262             &(physDev->font), &(physDev->font.tm));
 263
 264     physDev->font.escapement = lf.lfEscapement;
 265
 266     /* Does anyone know if these are supposed to be reversed like this? */
 267
 268     physDev->font.tm.tmDigitizedAspectX = physDev->logPixelsY;
 269     physDev->font.tm.tmDigitizedAspectY = physDev->logPixelsX;
 270
 271     return TRUE; /* We'll use a device font for now */
 272 }
 273
 274 /***********************************************************************
 275  *           PSDRV_GetTextMetrics
 276  */
 277 BOOL PSDRV_GetTextMetrics(PSDRV_PDEVICE *physDev, TEXTMETRICW *metrics)
 278 {
 279     memcpy(metrics, &(physDev->font.tm), sizeof(physDev->font.tm));
 280     return TRUE;
 281 }
 282
 283 /******************************************************************************
 284  *      PSDRV_UVMetrics
 285  *
 286  *  Find the AFMMETRICS for a given UV.  Returns first glyph in the font
 287  *  (space?) if the font does not have a glyph for the given UV.
 288  */
 289 static int MetricsByUV(const void *a, const void *b)
 290 {
 291     return (int)(((const AFMMETRICS *)a)->UV - ((const AFMMETRICS *)b)->UV);
 292 }
 293
 294 const AFMMETRICS *PSDRV_UVMetrics(LONG UV, const AFM *afm)
 295 {
 296     AFMMETRICS          key;
 297     const AFMMETRICS    *needle;
 298
 299     /*
 300      *  Ugly work-around for symbol fonts.  Wine is sending characters which
 301      *  belong in the Unicode private use range (U+F020 - U+F0FF) as ASCII
 302      *  characters (U+0020 - U+00FF).
 303      */
 304
 305     if ((afm->Metrics->UV & 0xff00) == 0xf000 && UV < 0x100)
 306         UV |= 0xf000;
 307
 308     key.UV = UV;
 309
 310     needle = bsearch(&key, afm->Metrics, afm->NumofMetrics, sizeof(AFMMETRICS),
 311             MetricsByUV);
 312
 313     if (needle == NULL)
 314     {
 315         WARN("No glyph for U+%.4lX in %s\n", UV, afm->FontName);
 316         needle = afm->Metrics;
 317     }
 318
 319     return needle;
 320 }
 321
 322 /***********************************************************************
 323  *           PSDRV_GetTextExtentPoint
 324  */
 325 BOOL PSDRV_GetTextExtentPoint(PSDRV_PDEVICE *physDev, LPCWSTR str, INT count, LPSIZE size)
 326 {
 327     DC *dc = physDev->dc;
 328     int             i;
 329     float           width = 0.0;
 330
 331     TRACE("%s %i\n", debugstr_wn(str, count), count);
 332
 333     for (i = 0; i < count && str[i] != '\0'; ++i)
 334         width += PSDRV_UVMetrics(str[i], physDev->font.afm)->WX;
 335
 336     width *= physDev->font.scale;
 337
 338     size->cx = GDI_ROUND((FLOAT)width * dc->xformVport2World.eM11);
 339     size->cy = GDI_ROUND((FLOAT)physDev->font.tm.tmHeight *
 340             dc->xformVport2World.eM22);
 341
 342     TRACE("cx=%li cy=%li\n", size->cx, size->cy);
 343
 344     return TRUE;
 345 }
 346
 347 /***********************************************************************
 348  *           PSDRV_GetCharWidth
 349  */
 350 BOOL PSDRV_GetCharWidth(PSDRV_PDEVICE *physDev, UINT firstChar, UINT lastChar, LPINT buffer)
 351 {
 352     UINT            i;
 353
 354     TRACE("U+%.4X U+%.4X\n", firstChar, lastChar);
 355
 356     if (lastChar > 0xffff || firstChar > lastChar)
 357     {
 358         SetLastError(ERROR_INVALID_PARAMETER);
 359         return FALSE;
 360     }
 361
 362     for (i = firstChar; i <= lastChar; ++i)
 363     {
 364         *buffer = GDI_ROUND(PSDRV_UVMetrics(i, physDev->font.afm)->WX
 365                 * physDev->font.scale);
 366         TRACE("U+%.4X: %i\n", i, *buffer);
 367         ++buffer;
 368     }
 369
 370     return TRUE;
 371 }
 372
 373 /***********************************************************************
 374  *           PSDRV_SetFont
 375  */
 376 BOOL PSDRV_SetFont( PSDRV_PDEVICE *physDev )
 377 {
 378     PSDRV_WriteSetColor(physDev, &physDev->font.color);
 379     if(physDev->font.set) return TRUE;
 380
 381     PSDRV_WriteSetFont(physDev);
 382     physDev->font.set = TRUE;
 383     return TRUE;
 384 }
 385
 386
 387 /***********************************************************************
 388  *           PSDRV_GetFontMetric
 389  */
 390 static UINT PSDRV_GetFontMetric( PSDRV_PDEVICE *physDev, const AFM *afm,
 391                                  NEWTEXTMETRICEXW *ntmx, ENUMLOGFONTEXW *elfx)
 392 {
 393     /* ntmx->ntmTm is NEWTEXTMETRICW; compatible w/ TEXTMETRICW per Win32 doc */
 394
 395     TEXTMETRICW     *tm = (TEXTMETRICW *)&(ntmx->ntmTm);
 396     LOGFONTW        *lf = &(elfx->elfLogFont);
 397     PSFONT          font;
 398
 399     memset(ntmx, 0, sizeof(*ntmx));
 400     memset(elfx, 0, sizeof(*elfx));
 401
 402     ScaleFont(afm, -(LONG)(afm->WinMetrics.usUnitsPerEm), &font, tm);
 403
 404     lf->lfHeight = tm->tmHeight;
 405     lf->lfWidth = tm->tmAveCharWidth;
 406     lf->lfWeight = tm->tmWeight;
 407     lf->lfItalic = tm->tmItalic;
 408     lf->lfCharSet = tm->tmCharSet;
 409
 410     lf->lfPitchAndFamily = (afm->IsFixedPitch) ? FIXED_PITCH : VARIABLE_PITCH;
 411
 412     MultiByteToWideChar(CP_ACP, 0, afm->FamilyName, -1, lf->lfFaceName,
 413             LF_FACESIZE);
 414
 415     return DEVICE_FONTTYPE;
 416 }
 417
 418 /***********************************************************************
 419  *           PSDRV_EnumDeviceFonts
 420  */
 421 BOOL PSDRV_EnumDeviceFonts( PSDRV_PDEVICE *physDev, LPLOGFONTW plf,
 422                             DEVICEFONTENUMPROC proc, LPARAM lp )
 423 {
 424     ENUMLOGFONTEXW      lf;
 425     NEWTEXTMETRICEXW    tm;
 426     BOOL                b, bRet = 0;
 427     AFMLISTENTRY        *afmle;
 428     FONTFAMILY          *family;
 429     char                FaceName[LF_FACESIZE];
 430
 431     if( plf->lfFaceName[0] ) {
 432         WideCharToMultiByte(CP_ACP, 0, plf->lfFaceName, -1,
 433                           FaceName, sizeof(FaceName), NULL, NULL);
 434         TRACE("lfFaceName = '%s'\n", FaceName);
 435         for(family = physDev->pi->Fonts; family; family = family->next) {
 436             if(!strncmp(FaceName, family->FamilyName,
 437                         strlen(family->FamilyName)))
 438                 break;
 439         }
 440         if(family) {
 441             for(afmle = family->afmlist; afmle; afmle = afmle->next) {
 442                 TRACE("Got '%s'\n", afmle->afm->FontName);
 443                 if( (b = proc( &lf, &tm, PSDRV_GetFontMetric(physDev, afmle->afm, &tm, &lf), lp )) )
 444                      bRet = b;
 445                 else break;
 446             }
 447         }
 448     } else {
 449
 450         TRACE("lfFaceName = NULL\n");
 451         for(family = physDev->pi->Fonts; family; family = family->next) {
 452             afmle = family->afmlist;
 453             TRACE("Got '%s'\n", afmle->afm->FontName);
 454             if( (b = proc( &lf, &tm, PSDRV_GetFontMetric(physDev, afmle->afm, &tm, &lf), lp )) )
 455                 bRet = b;
 456             else break;
 457         }
 458     }
 459     return bRet;
 460 }