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(PHYSDEV dev, HFONT hfont,
 159                              LOGFONTW *plf, LPSTR FaceName)
 160 {
 161     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 162     AFMLISTENTRY *afmle;
 163     FONTFAMILY *family;
 164     BOOL bd = FALSE, it = FALSE;
 165     LONG height;
 166
 167     TRACE("Trying to find facename '%s'\n", FaceName);
 168
 169     /* Look for a matching font family */
 170     for(family = physDev->pi->Fonts; family; family = family->next) {
 171         if(!strcasecmp(FaceName, family->FamilyName))
 172             break;
 173     }
 174
 175     if(!family) {
 176         /* Fallback for Window's font families to common PostScript families */
 177         if(!strcmp(FaceName, "Arial"))
 178             strcpy(FaceName, "Helvetica");
 179         else if(!strcmp(FaceName, "System"))
 180             strcpy(FaceName, "Helvetica");
 181         else if(!strcmp(FaceName, "Times New Roman"))
 182             strcpy(FaceName, "Times");
 183         else if(!strcmp(FaceName, "Courier New"))
 184             strcpy(FaceName, "Courier");
 185
 186         for(family = physDev->pi->Fonts; family; family = family->next) {
 187             if(!strcmp(FaceName, family->FamilyName))
 188                 break;
 189         }
 190     }
 191     /* If all else fails, use the first font defined for the printer */
 192     if(!family)
 193         family = physDev->pi->Fonts;
 194
 195     TRACE("Got family '%s'\n", family->FamilyName);
 196
 197     if(plf->lfItalic)
 198         it = TRUE;
 199     if(plf->lfWeight > 550)
 200         bd = TRUE;
 201
 202     for(afmle = family->afmlist; afmle; afmle = afmle->next) {
 203         if( (bd == (afmle->afm->Weight == FW_BOLD)) &&
 204             (it == (afmle->afm->ItalicAngle != 0.0)) )
 205                 break;
 206     }
 207     if(!afmle)
 208         afmle = family->afmlist; /* not ideal */
 209
 210     TRACE("Got font '%s'\n", afmle->afm->FontName);
 211
 212     physDev->font.fontloc = Builtin;
 213     physDev->font.fontinfo.Builtin.afm = afmle->afm;
 214
 215     height = plf->lfHeight;
 216     /* stock fonts ignore the mapping mode */
 217     if (!is_stock_font( hfont )) {
 218         POINT pts[2];
 219         pts[0].x = pts[0].y = pts[1].x = 0;
 220         pts[1].y = height;
 221         LPtoDP(dev->hdc, pts, 2);
 222         height = pts[1].y - pts[0].y;
 223     }
 224     ScaleFont(physDev->font.fontinfo.Builtin.afm, height,
 225               &(physDev->font), &(physDev->font.fontinfo.Builtin.tm));
 226
 227
 228     /* Does anyone know if these are supposed to be reversed like this? */
 229
 230     physDev->font.fontinfo.Builtin.tm.tmDigitizedAspectX = physDev->logPixelsY;
 231     physDev->font.fontinfo.Builtin.tm.tmDigitizedAspectY = physDev->logPixelsX;
 232
 233     return TRUE;
 234 }
 235
 236 BOOL PSDRV_WriteSetBuiltinFont(PHYSDEV dev)
 237 {
 238     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 239
 240     return PSDRV_WriteSetFont(dev, physDev->font.fontinfo.Builtin.afm->FontName,
 241                               physDev->font.size, physDev->font.escapement, FALSE);
 242 }
 243
 244 BOOL PSDRV_WriteBuiltinGlyphShow(PHYSDEV dev, LPCWSTR str, INT count)
 245 {
 246     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 247     int i;
 248     LPCSTR name;
 249
 250     for (i = 0; i < count; ++i)
 251     {
 252         name = PSDRV_UVMetrics(str[i], physDev->font.fontinfo.Builtin.afm)->N->sz;
 253
 254         PSDRV_WriteGlyphShow(dev, name);
 255     }
 256
 257     return TRUE;
 258 }
 259
 260 /***********************************************************************
 261  *           PSDRV_GetTextMetrics
 262  */
 263 BOOL PSDRV_GetTextMetrics(PHYSDEV dev, TEXTMETRICW *metrics)
 264 {
 265     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 266
 267     if (physDev->font.fontloc == Download)
 268     {
 269         dev = GET_NEXT_PHYSDEV( dev, pGetTextMetrics );
 270         return dev->funcs->pGetTextMetrics( dev, metrics );
 271     }
 272
 273     memcpy(metrics, &(physDev->font.fontinfo.Builtin.tm),
 274            sizeof(physDev->font.fontinfo.Builtin.tm));
 275     return TRUE;
 276 }
 277
 278 /******************************************************************************
 279  *      PSDRV_UVMetrics
 280  *
 281  *  Find the AFMMETRICS for a given UV.  Returns first glyph in the font
 282  *  (space?) if the font does not have a glyph for the given UV.
 283  */
 284 static int MetricsByUV(const void *a, const void *b)
 285 {
 286     return (int)(((const AFMMETRICS *)a)->UV - ((const AFMMETRICS *)b)->UV);
 287 }
 288
 289 const AFMMETRICS *PSDRV_UVMetrics(LONG UV, const AFM *afm)
 290 {
 291     AFMMETRICS          key;
 292     const AFMMETRICS    *needle;
 293
 294     /*
 295      *  Ugly work-around for symbol fonts.  Wine is sending characters which
 296      *  belong in the Unicode private use range (U+F020 - U+F0FF) as ASCII
 297      *  characters (U+0020 - U+00FF).
 298      */
 299
 300     if ((afm->Metrics->UV & 0xff00) == 0xf000 && UV < 0x100)
 301         UV |= 0xf000;
 302
 303     key.UV = UV;
 304
 305     needle = bsearch(&key, afm->Metrics, afm->NumofMetrics, sizeof(AFMMETRICS),
 306             MetricsByUV);
 307
 308     if (needle == NULL)
 309     {
 310         WARN("No glyph for U+%.4X in %s\n", UV, afm->FontName);
 311         needle = afm->Metrics;
 312     }
 313
 314     return needle;
 315 }
 316
 317 /***********************************************************************
 318  *           PSDRV_GetTextExtentExPoint
 319  */
 320 BOOL PSDRV_GetTextExtentExPoint(PHYSDEV dev, LPCWSTR str, INT count,
 321                                 INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size)
 322 {
 323     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 324     int             nfit = 0;
 325     int             i;
 326     float           width = 0.0;
 327     float           scale;
 328
 329     if (physDev->font.fontloc == Download)
 330     {
 331         dev = GET_NEXT_PHYSDEV( dev, pGetTextExtentExPoint );
 332         return dev->funcs->pGetTextExtentExPoint( dev, str, count, maxExt, lpnFit, alpDx, size );
 333     }
 334
 335     TRACE("%s %i\n", debugstr_wn(str, count), count);
 336
 337     scale = physDev->font.fontinfo.Builtin.scale;
 338     for (i = 0; i < count && str[i] != '\0'; ++i)
 339     {
 340         float scaled_width;
 341         width += PSDRV_UVMetrics(str[i], physDev->font.fontinfo.Builtin.afm)->WX;
 342         scaled_width = width * scale;
 343         if (alpDx)
 344             alpDx[i] = scaled_width;
 345         if (scaled_width <= maxExt)
 346             ++nfit;
 347     }
 348
 349     size->cx = width * physDev->font.fontinfo.Builtin.scale;
 350     size->cy = physDev->font.fontinfo.Builtin.tm.tmHeight;
 351
 352     if (lpnFit)
 353         *lpnFit = nfit;
 354
 355     TRACE("cx=%i cy=%i\n", size->cx, size->cy);
 356
 357     return TRUE;
 358 }
 359
 360 /***********************************************************************
 361  *           PSDRV_GetCharWidth
 362  */
 363 BOOL PSDRV_GetCharWidth(PHYSDEV dev, UINT firstChar, UINT lastChar, LPINT buffer)
 364 {
 365     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 366     UINT            i;
 367
 368     if (physDev->font.fontloc == Download)
 369     {
 370         dev = GET_NEXT_PHYSDEV( dev, pGetCharWidth );
 371         return dev->funcs->pGetCharWidth( dev, firstChar, lastChar, buffer );
 372     }
 373
 374     TRACE("U+%.4X U+%.4X\n", firstChar, lastChar);
 375
 376     if (lastChar > 0xffff || firstChar > lastChar)
 377     {
 378         SetLastError(ERROR_INVALID_PARAMETER);
 379         return FALSE;
 380     }
 381
 382     for (i = firstChar; i <= lastChar; ++i)
 383     {
 384         *buffer = floor( PSDRV_UVMetrics(i, physDev->font.fontinfo.Builtin.afm)->WX
 385                          * physDev->font.fontinfo.Builtin.scale + 0.5 );
 386         TRACE("U+%.4X: %i\n", i, *buffer);
 387         ++buffer;
 388     }
 389
 390     return TRUE;
 391 }
 392
 393
 394 /***********************************************************************
 395  *           PSDRV_GetFontMetric
 396  */
 397 static UINT PSDRV_GetFontMetric(HDC hdc, const AFM *afm,
 398         NEWTEXTMETRICEXW *ntmx, ENUMLOGFONTEXW *elfx)
 399 {
 400     /* ntmx->ntmTm is NEWTEXTMETRICW; compatible w/ TEXTMETRICW per Win32 doc */
 401
 402     TEXTMETRICW     *tm = (TEXTMETRICW *)&(ntmx->ntmTm);
 403     LOGFONTW        *lf = &(elfx->elfLogFont);
 404     PSFONT          font;
 405
 406     memset(ntmx, 0, sizeof(*ntmx));
 407     memset(elfx, 0, sizeof(*elfx));
 408
 409     ScaleFont(afm, -(LONG)(afm->WinMetrics.usUnitsPerEm), &font, tm);
 410
 411     lf->lfHeight = tm->tmHeight;
 412     lf->lfWidth = tm->tmAveCharWidth;
 413     lf->lfWeight = tm->tmWeight;
 414     lf->lfItalic = tm->tmItalic;
 415     lf->lfCharSet = tm->tmCharSet;
 416
 417     lf->lfPitchAndFamily = (afm->IsFixedPitch) ? FIXED_PITCH : VARIABLE_PITCH;
 418
 419     MultiByteToWideChar(CP_ACP, 0, afm->FamilyName, -1, lf->lfFaceName,
 420             LF_FACESIZE);
 421
 422     return DEVICE_FONTTYPE;
 423 }
 424
 425 /***********************************************************************
 426  *           PSDRV_EnumFonts
 427  */
 428 BOOL PSDRV_EnumFonts( PHYSDEV dev, LPLOGFONTW plf, FONTENUMPROCW proc, LPARAM lp )
 429 {
 430     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 431     PHYSDEV next = GET_NEXT_PHYSDEV( dev, pEnumFonts );
 432     ENUMLOGFONTEXW      lf;
 433     NEWTEXTMETRICEXW    tm;
 434     BOOL                ret;
 435     AFMLISTENTRY        *afmle;
 436     FONTFAMILY          *family;
 437     char                FaceName[LF_FACESIZE];
 438
 439     ret = next->funcs->pEnumFonts( next, plf, proc, lp );
 440     if (!ret) return FALSE;
 441
 442     if( plf && plf->lfFaceName[0] ) {
 443         WideCharToMultiByte(CP_ACP, 0, plf->lfFaceName, -1,
 444                           FaceName, sizeof(FaceName), NULL, NULL);
 445         TRACE("lfFaceName = '%s'\n", FaceName);
 446         for(family = physDev->pi->Fonts; family; family = family->next) {
 447             if(!strncmp(FaceName, family->FamilyName,
 448                         strlen(family->FamilyName)))
 449                 break;
 450         }
 451         if(family) {
 452             for(afmle = family->afmlist; afmle; afmle = afmle->next) {
 453                 UINT fm;
 454
 455                 TRACE("Got '%s'\n", afmle->afm->FontName);
 456                 fm = PSDRV_GetFontMetric( dev->hdc, afmle->afm, &tm, &lf );
 457                 if (!(ret = (*proc)( &lf.elfLogFont, (TEXTMETRICW *)&tm, fm, lp )))
 458                     break;
 459             }
 460         }
 461     } else {
 462
 463         TRACE("lfFaceName = NULL\n");
 464         for(family = physDev->pi->Fonts; family; family = family->next) {
 465             UINT fm;
 466
 467             afmle = family->afmlist;
 468             TRACE("Got '%s'\n", afmle->afm->FontName);
 469             fm = PSDRV_GetFontMetric( dev->hdc, afmle->afm, &tm, &lf );
 470             if (!(ret = (*proc)( &lf.elfLogFont, (TEXTMETRICW *)&tm, fm, lp )))
 471                 break;
 472         }
 473     }
 474     return ret;
 475 }