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