dlls/wineps.drv/builtin.c

   1 /*
   2  *      PostScript driver builtin font functions
   3  *
   4  *      Copyright 2002  Huw D M Davies for CodeWeavers
   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20 #include <stdarg.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23 #include <math.h>
  24 #include <assert.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winerror.h"
  29 #include "wingdi.h"
  30 #include "winnls.h"
  31
  32 #include "psdrv.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  36
  37
  38 /***********************************************************************
  39  *           is_stock_font
  40  */
  41 static inline BOOL is_stock_font( HFONT font )
  42 {
  43     int i;
  44     for (i = OEM_FIXED_FONT; i <= DEFAULT_GUI_FONT; i++)
  45     {
  46         if (i != DEFAULT_PALETTE && font == GetStockObject(i)) return TRUE;
  47     }
  48     return FALSE;
  49 }
  50
  51
  52 /*******************************************************************************
  53  *  ScaleFont
  54  *
  55  *  Scale builtin font to requested lfHeight
  56  *
  57  */
  58 static inline float Round(float f)
  59 {
  60     return (f > 0) ? (f + 0.5) : (f - 0.5);
  61 }
  62
  63 static VOID ScaleFont(const AFM *afm, LONG lfHeight, PSFONT *font,
  64                       TEXTMETRICW *tm)
  65 {
  66     const WINMETRICS    *wm = &(afm->WinMetrics);
  67     USHORT              usUnitsPerEm, usWinAscent, usWinDescent;
  68     SHORT               sAscender, sDescender, sLineGap, sAvgCharWidth;
  69
  70     TRACE("'%s' %i\n", afm->FontName, lfHeight);
  71
  72     if (lfHeight < 0)                                   /* match em height */
  73     {
  74         font->fontinfo.Builtin.scale = - ((float)lfHeight / (float)(wm->usUnitsPerEm));
  75     }
  76     else                                                /* match cell height */
  77     {
  78         font->fontinfo.Builtin.scale = (float)lfHeight /
  79                 (float)(wm->usWinAscent + wm->usWinDescent);
  80     }
  81
  82     font->size.xx = (INT)Round(font->fontinfo.Builtin.scale * (float)wm->usUnitsPerEm);
  83     font->size.xy = font->size.yx = 0;
  84     font->size.yy = -(INT)Round(font->fontinfo.Builtin.scale * (float)wm->usUnitsPerEm);
  85
  86     usUnitsPerEm = (USHORT)Round((float)(wm->usUnitsPerEm) * font->fontinfo.Builtin.scale);
  87     sAscender = (SHORT)Round((float)(wm->sAscender) * font->fontinfo.Builtin.scale);
  88     sDescender = (SHORT)Round((float)(wm->sDescender) * font->fontinfo.Builtin.scale);
  89     sLineGap = (SHORT)Round((float)(wm->sLineGap) * font->fontinfo.Builtin.scale);
  90     usWinAscent = (USHORT)Round((float)(wm->usWinAscent) * font->fontinfo.Builtin.scale);
  91     usWinDescent = (USHORT)Round((float)(wm->usWinDescent) * font->fontinfo.Builtin.scale);
  92     sAvgCharWidth = (SHORT)Round((float)(wm->sAvgCharWidth) * font->fontinfo.Builtin.scale);
  93
  94     tm->tmAscent = (LONG)usWinAscent;
  95     tm->tmDescent = (LONG)usWinDescent;
  96     tm->tmHeight = tm->tmAscent + tm->tmDescent;
  97
  98     tm->tmInternalLeading = tm->tmHeight - (LONG)usUnitsPerEm;
  99     if (tm->tmInternalLeading < 0)
 100         tm->tmInternalLeading = 0;
 101
 102     tm->tmExternalLeading =
 103             (LONG)(sAscender - sDescender + sLineGap) - tm->tmHeight;
 104     if (tm->tmExternalLeading < 0)
 105         tm->tmExternalLeading = 0;
 106
 107     tm->tmAveCharWidth = (LONG)sAvgCharWidth;
 108
 109     tm->tmWeight = afm->Weight;
 110     tm->tmItalic = (afm->ItalicAngle != 0.0);
 111     tm->tmUnderlined = 0;
 112     tm->tmStruckOut = 0;
 113     tm->tmFirstChar = (WCHAR)(afm->Metrics[0].UV);
 114     tm->tmLastChar = (WCHAR)(afm->Metrics[afm->NumofMetrics - 1].UV);
 115     tm->tmDefaultChar = 0x001f;         /* Win2K does this - FIXME? */
 116     tm->tmBreakChar = tm->tmFirstChar;          /* should be 'space' */
 117
 118     tm->tmPitchAndFamily = TMPF_DEVICE | TMPF_VECTOR;
 119     if (!afm->IsFixedPitch)
 120         tm->tmPitchAndFamily |= TMPF_FIXED_PITCH;   /* yes, it's backwards */
 121     if (wm->usUnitsPerEm != 1000)
 122         tm->tmPitchAndFamily |= TMPF_TRUETYPE;
 123
 124     tm->tmCharSet = ANSI_CHARSET;       /* FIXME */
 125     tm->tmOverhang = 0;
 126
 127     /*
 128      *  This is kludgy.  font->scale is used in several places in the driver
 129      *  to adjust PostScript-style metrics.  Since these metrics have been
 130      *  "normalized" to an em-square size of 1000, font->scale needs to be
 131      *  similarly adjusted..
 132      */
 133
 134     font->fontinfo.Builtin.scale *= (float)wm->usUnitsPerEm / 1000.0;
 135
 136     tm->tmMaxCharWidth = (LONG)Round(
 137             (afm->FontBBox.urx - afm->FontBBox.llx) * font->fontinfo.Builtin.scale);
 138
 139     font->underlinePosition = afm->UnderlinePosition * font->fontinfo.Builtin.scale;
 140     font->underlineThickness = afm->UnderlineThickness * font->fontinfo.Builtin.scale;
 141     font->strikeoutPosition = tm->tmAscent / 2;
 142     font->strikeoutThickness = font->underlineThickness;
 143
 144     TRACE("Selected PS font '%s' size %d weight %d.\n", afm->FontName,
 145           font->size.xx, tm->tmWeight );
 146     TRACE("H = %d As = %d Des = %d IL = %d EL = %d\n", tm->tmHeight,
 147             tm->tmAscent, tm->tmDescent, tm->tmInternalLeading,
 148             tm->tmExternalLeading);
 149 }
 150
 151
 152 /****************************************************************************
 153  *  PSDRV_SelectBuiltinFont
 154  *
 155  *  Set up physDev->font for a builtin font
 156  *
 157  */
 158 BOOL PSDRV_SelectBuiltinFont(PSDRV_PDEVICE *physDev, HFONT hfont,
 159                              LOGFONTW *plf, LPSTR FaceName)
 160 {
 161     AFMLISTENTRY *afmle;
 162     FONTFAMILY *family;
 163     BOOL bd = FALSE, it = FALSE;
 164     LONG height;
 165
 166     TRACE("Trying to find facename '%s'\n", FaceName);
 167
 168     /* Look for a matching font family */
 169     for(family = physDev->pi->Fonts; family; family = family->next) {
 170         if(!strcasecmp(FaceName, family->FamilyName))
 171             break;
 172     }
 173
 174     if(!family) {
 175         /* Fallback for Window's font families to common PostScript families */
 176         if(!strcmp(FaceName, "Arial"))
 177             strcpy(FaceName, "Helvetica");
 178         else if(!strcmp(FaceName, "System"))
 179             strcpy(FaceName, "Helvetica");
 180         else if(!strcmp(FaceName, "Times New Roman"))
 181             strcpy(FaceName, "Times");
 182         else if(!strcmp(FaceName, "Courier New"))
 183             strcpy(FaceName, "Courier");
 184
 185         for(family = physDev->pi->Fonts; family; family = family->next) {
 186             if(!strcmp(FaceName, family->FamilyName))
 187                 break;
 188         }
 189     }
 190     /* If all else fails, use the first font defined for the printer */
 191     if(!family)
 192         family = physDev->pi->Fonts;
 193
 194     TRACE("Got family '%s'\n", family->FamilyName);
 195
 196     if(plf->lfItalic)
 197         it = TRUE;
 198     if(plf->lfWeight > 550)
 199         bd = TRUE;
 200
 201     for(afmle = family->afmlist; afmle; afmle = afmle->next) {
 202         if( (bd == (afmle->afm->Weight == FW_BOLD)) &&
 203             (it == (afmle->afm->ItalicAngle != 0.0)) )
 204                 break;
 205     }
 206     if(!afmle)
 207         afmle = family->afmlist; /* not ideal */
 208
 209     TRACE("Got font '%s'\n", afmle->afm->FontName);
 210
 211     physDev->font.fontloc = Builtin;
 212     physDev->font.fontinfo.Builtin.afm = afmle->afm;
 213
 214     height = plf->lfHeight;
 215     /* stock fonts ignore the mapping mode */
 216     if (!is_stock_font( hfont )) {
 217         POINT pts[2];
 218         pts[0].x = pts[0].y = pts[1].x = 0;
 219         pts[1].y = height;
 220         LPtoDP(physDev->hdc, pts, 2);
 221         height = pts[1].y - pts[0].y;
 222     }
 223     ScaleFont(physDev->font.fontinfo.Builtin.afm, height,
 224               &(physDev->font), &(physDev->font.fontinfo.Builtin.tm));
 225
 226
 227     /* Does anyone know if these are supposed to be reversed like this? */
 228
 229     physDev->font.fontinfo.Builtin.tm.tmDigitizedAspectX = physDev->logPixelsY;
 230     physDev->font.fontinfo.Builtin.tm.tmDigitizedAspectY = physDev->logPixelsX;
 231
 232     return TRUE;
 233 }
 234
 235 BOOL PSDRV_WriteSetBuiltinFont(PSDRV_PDEVICE *physDev)
 236 {
 237     return PSDRV_WriteSetFont(physDev,
 238                               physDev->font.fontinfo.Builtin.afm->FontName,
 239                               physDev->font.size, physDev->font.escapement);
 240 }
 241
 242 BOOL PSDRV_WriteBuiltinGlyphShow(PSDRV_PDEVICE *physDev, LPCWSTR str, INT count)
 243 {
 244     int i;
 245     LPCSTR name;
 246
 247     for (i = 0; i < count; ++i)
 248     {
 249         name = PSDRV_UVMetrics(str[i], physDev->font.fontinfo.Builtin.afm)->N->sz;
 250
 251         PSDRV_WriteGlyphShow(physDev, name);
 252     }
 253
 254     return TRUE;
 255 }
 256
 257 /***********************************************************************
 258  *           PSDRV_GetTextMetrics
 259  */
 260 BOOL CDECL PSDRV_GetTextMetrics(PSDRV_PDEVICE *physDev, TEXTMETRICW *metrics)
 261 {
 262     assert(physDev->font.fontloc == Builtin);
 263
 264     memcpy(metrics, &(physDev->font.fontinfo.Builtin.tm),
 265            sizeof(physDev->font.fontinfo.Builtin.tm));
 266     return TRUE;
 267 }
 268
 269 /******************************************************************************
 270  *      PSDRV_UVMetrics
 271  *
 272  *  Find the AFMMETRICS for a given UV.  Returns first glyph in the font
 273  *  (space?) if the font does not have a glyph for the given UV.
 274  */
 275 static int MetricsByUV(const void *a, const void *b)
 276 {
 277     return (int)(((const AFMMETRICS *)a)->UV - ((const AFMMETRICS *)b)->UV);
 278 }
 279
 280 const AFMMETRICS *PSDRV_UVMetrics(LONG UV, const AFM *afm)
 281 {
 282     AFMMETRICS          key;
 283     const AFMMETRICS    *needle;
 284
 285     /*
 286      *  Ugly work-around for symbol fonts.  Wine is sending characters which
 287      *  belong in the Unicode private use range (U+F020 - U+F0FF) as ASCII
 288      *  characters (U+0020 - U+00FF).
 289      */
 290
 291     if ((afm->Metrics->UV & 0xff00) == 0xf000 && UV < 0x100)
 292         UV |= 0xf000;
 293
 294     key.UV = UV;
 295
 296     needle = bsearch(&key, afm->Metrics, afm->NumofMetrics, sizeof(AFMMETRICS),
 297             MetricsByUV);
 298
 299     if (needle == NULL)
 300     {
 301         WARN("No glyph for U+%.4X in %s\n", UV, afm->FontName);
 302         needle = afm->Metrics;
 303     }
 304
 305     return needle;
 306 }
 307
 308 /***********************************************************************
 309  *           PSDRV_GetTextExtentExPoint
 310  */
 311 BOOL CDECL PSDRV_GetTextExtentExPoint(PSDRV_PDEVICE *physDev, LPCWSTR str, INT count,
 312                                       INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size)
 313 {
 314     int             nfit = 0;
 315     int             i;
 316     float           width = 0.0;
 317     float           scale;
 318
 319     assert(physDev->font.fontloc == Builtin);
 320
 321     TRACE("%s %i\n", debugstr_wn(str, count), count);
 322
 323     scale = physDev->font.fontinfo.Builtin.scale;
 324     for (i = 0; i < count && str[i] != '\0'; ++i)
 325     {
 326         float scaled_width;
 327         width += PSDRV_UVMetrics(str[i], physDev->font.fontinfo.Builtin.afm)->WX;
 328         scaled_width = width * scale;
 329         if (alpDx)
 330             alpDx[i] = scaled_width;
 331         if (scaled_width <= maxExt)
 332             ++nfit;
 333     }
 334
 335     size->cx = width * physDev->font.fontinfo.Builtin.scale;
 336     size->cy = physDev->font.fontinfo.Builtin.tm.tmHeight;
 337
 338     if (lpnFit)
 339         *lpnFit = nfit;
 340
 341     TRACE("cx=%i cy=%i\n", size->cx, size->cy);
 342
 343     return TRUE;
 344 }
 345
 346 /***********************************************************************
 347  *           PSDRV_GetCharWidth
 348  */
 349 BOOL CDECL PSDRV_GetCharWidth(PSDRV_PDEVICE *physDev, UINT firstChar, UINT lastChar, LPINT buffer)
 350 {
 351     UINT            i;
 352
 353     assert(physDev->font.fontloc == Builtin);
 354
 355     TRACE("U+%.4X U+%.4X\n", firstChar, lastChar);
 356
 357     if (lastChar > 0xffff || firstChar > lastChar)
 358     {
 359         SetLastError(ERROR_INVALID_PARAMETER);
 360         return FALSE;
 361     }
 362
 363     for (i = firstChar; i <= lastChar; ++i)
 364     {
 365         *buffer = floor( PSDRV_UVMetrics(i, physDev->font.fontinfo.Builtin.afm)->WX
 366                          * physDev->font.fontinfo.Builtin.scale + 0.5 );
 367         TRACE("U+%.4X: %i\n", i, *buffer);
 368         ++buffer;
 369     }
 370
 371     return TRUE;
 372 }
 373
 374
 375 /***********************************************************************
 376  *           PSDRV_GetFontMetric
 377  */
 378 static UINT PSDRV_GetFontMetric(HDC hdc, const AFM *afm,
 379         NEWTEXTMETRICEXW *ntmx, ENUMLOGFONTEXW *elfx)
 380 {
 381     /* ntmx->ntmTm is NEWTEXTMETRICW; compatible w/ TEXTMETRICW per Win32 doc */
 382
 383     TEXTMETRICW     *tm = (TEXTMETRICW *)&(ntmx->ntmTm);
 384     LOGFONTW        *lf = &(elfx->elfLogFont);
 385     PSFONT          font;
 386
 387     memset(ntmx, 0, sizeof(*ntmx));
 388     memset(elfx, 0, sizeof(*elfx));
 389
 390     ScaleFont(afm, -(LONG)(afm->WinMetrics.usUnitsPerEm), &font, tm);
 391
 392     lf->lfHeight = tm->tmHeight;
 393     lf->lfWidth = tm->tmAveCharWidth;
 394     lf->lfWeight = tm->tmWeight;
 395     lf->lfItalic = tm->tmItalic;
 396     lf->lfCharSet = tm->tmCharSet;
 397
 398     lf->lfPitchAndFamily = (afm->IsFixedPitch) ? FIXED_PITCH : VARIABLE_PITCH;
 399
 400     MultiByteToWideChar(CP_ACP, 0, afm->FamilyName, -1, lf->lfFaceName,
 401             LF_FACESIZE);
 402
 403     return DEVICE_FONTTYPE;
 404 }
 405
 406 /***********************************************************************
 407  *           PSDRV_EnumDeviceFonts
 408  */
 409 BOOL CDECL PSDRV_EnumDeviceFonts( PSDRV_PDEVICE *physDev, LPLOGFONTW plf,
 410                                   FONTENUMPROCW proc, LPARAM lp )
 411 {
 412     ENUMLOGFONTEXW      lf;
 413     NEWTEXTMETRICEXW    tm;
 414     BOOL                b, bRet = 0;
 415     AFMLISTENTRY        *afmle;
 416     FONTFAMILY          *family;
 417     char                FaceName[LF_FACESIZE];
 418
 419     if( plf && plf->lfFaceName[0] ) {
 420         WideCharToMultiByte(CP_ACP, 0, plf->lfFaceName, -1,
 421                           FaceName, sizeof(FaceName), NULL, NULL);
 422         TRACE("lfFaceName = '%s'\n", FaceName);
 423         for(family = physDev->pi->Fonts; family; family = family->next) {
 424             if(!strncmp(FaceName, family->FamilyName,
 425                         strlen(family->FamilyName)))
 426                 break;
 427         }
 428         if(family) {
 429             for(afmle = family->afmlist; afmle; afmle = afmle->next) {
 430                 UINT fm;
 431
 432                 TRACE("Got '%s'\n", afmle->afm->FontName);
 433                 fm = PSDRV_GetFontMetric( physDev->hdc, afmle->afm, &tm, &lf );
 434                 if( (b = (*proc)( &lf.elfLogFont, (TEXTMETRICW *)&tm, fm, lp )) )
 435                      bRet = b;
 436                 else break;
 437             }
 438         }
 439     } else {
 440
 441         TRACE("lfFaceName = NULL\n");
 442         for(family = physDev->pi->Fonts; family; family = family->next) {
 443             UINT fm;
 444
 445             afmle = family->afmlist;
 446             TRACE("Got '%s'\n", afmle->afm->FontName);
 447             fm = PSDRV_GetFontMetric( physDev->hdc, afmle->afm, &tm, &lf );
 448             if( (b = (*proc)( &lf.elfLogFont, (TEXTMETRICW *)&tm, fm, lp )) )
 449                 bRet = b;
 450             else break;
 451         }
 452     }
 453     return bRet;
 454 }