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