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