dlls/wineps.drv/download.c

   1 /*
   2  *      PostScript driver downloadable 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 <string.h>
  21 #include <stdlib.h>
  22 #include <assert.h>
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "winnls.h"
  30
  31 #include "psdrv.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  35
  36 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform );
  37
  38 #define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
  39           ( ( (DWORD)_x4 << 24 ) |     \
  40             ( (DWORD)_x3 << 16 ) |     \
  41             ( (DWORD)_x2 <<  8 ) |     \
  42               (DWORD)_x1         )
  43
  44 #define GET_BE_WORD(ptr)  MAKEWORD( ((BYTE *)(ptr))[1], ((BYTE *)(ptr))[0] )
  45 #define GET_BE_DWORD(ptr) ((DWORD)MAKELONG( GET_BE_WORD(&((WORD *)(ptr))[1]), \
  46                                             GET_BE_WORD(&((WORD *)(ptr))[0]) ))
  47
  48 /****************************************************************************
  49  *  get_download_name
  50  */
  51 static void get_download_name(PSDRV_PDEVICE *physDev, LPOUTLINETEXTMETRICA
  52                               potm, char **str)
  53 {
  54     int len;
  55     char *p;
  56     DWORD size;
  57
  58     size = GetFontData(physDev->hdc, MS_MAKE_TAG('n','a','m','e'), 0, NULL, 0);
  59     if(size != 0 && size != GDI_ERROR)
  60     {
  61         BYTE *name = HeapAlloc(GetProcessHeap(), 0, size);
  62         if(name)
  63         {
  64             USHORT count, i;
  65             BYTE *strings;
  66             struct
  67             {
  68                 USHORT platform_id;
  69                 USHORT encoding_id;
  70                 USHORT language_id;
  71                 USHORT name_id;
  72                 USHORT length;
  73                 USHORT offset;
  74             } *name_record;
  75
  76             GetFontData(physDev->hdc, MS_MAKE_TAG('n','a','m','e'), 0, name, size);
  77             count = GET_BE_WORD(name + 2);
  78             strings = name + GET_BE_WORD(name + 4);
  79             name_record = (typeof(name_record))(name + 6);
  80             for(i = 0; i < count; i++, name_record++)
  81             {
  82                 name_record->platform_id = GET_BE_WORD(&name_record->platform_id);
  83                 name_record->encoding_id = GET_BE_WORD(&name_record->encoding_id);
  84                 name_record->language_id = GET_BE_WORD(&name_record->language_id);
  85                 name_record->name_id     = GET_BE_WORD(&name_record->name_id);
  86                 name_record->length      = GET_BE_WORD(&name_record->length);
  87                 name_record->offset      = GET_BE_WORD(&name_record->offset);
  88
  89                 if(name_record->platform_id == 1 && name_record->encoding_id == 0 &&
  90                    name_record->language_id == 0 && name_record->name_id == 6)
  91                 {
  92                     TRACE("Got Mac PS name %s\n", debugstr_an((char*)strings + name_record->offset, name_record->length));
  93                     *str = HeapAlloc(GetProcessHeap(), 0, name_record->length + 1);
  94                     memcpy(*str, strings + name_record->offset, name_record->length);
  95                     *(*str + name_record->length) = '\0';
  96                     HeapFree(GetProcessHeap(), 0, name);
  97                     return;
  98                 }
  99                 if(name_record->platform_id == 3 && name_record->encoding_id == 1 &&
 100                    name_record->language_id == 0x409 && name_record->name_id == 6)
 101                 {
 102                     WCHAR *unicode = HeapAlloc(GetProcessHeap(), 0, name_record->length + 2);
 103                     DWORD len;
 104                     int c;
 105
 106                     for(c = 0; c < name_record->length / 2; c++)
 107                         unicode[c] = GET_BE_WORD(strings + name_record->offset + c * 2);
 108                     unicode[c] = 0;
 109                     TRACE("Got Windows PS name %s\n", debugstr_w(unicode));
 110                     len = WideCharToMultiByte(1252, 0, unicode, -1, NULL, 0, NULL, NULL);
 111                     *str = HeapAlloc(GetProcessHeap(), 0, len);
 112                     WideCharToMultiByte(1252, 0, unicode, -1, *str, len, NULL, NULL);
 113                     HeapFree(GetProcessHeap(), 0, unicode);
 114                     HeapFree(GetProcessHeap(), 0, name);
 115                     return;
 116                 }
 117             }
 118             TRACE("Unable to find PostScript name\n");
 119             HeapFree(GetProcessHeap(), 0, name);
 120         }
 121     }
 122
 123     len = strlen((char*)potm + (ptrdiff_t)potm->otmpFullName) + 1;
 124     *str = HeapAlloc(GetProcessHeap(),0,len);
 125     strcpy(*str, (char*)potm + (ptrdiff_t)potm->otmpFullName);
 126
 127     p = *str;
 128     while((p = strchr(p, ' ')))
 129         *p = '_';
 130
 131     return;
 132 }
 133
 134 /****************************************************************************
 135  *  is_font_downloaded
 136  */
 137 static DOWNLOAD *is_font_downloaded(PSDRV_PDEVICE *physDev, char *ps_name)
 138 {
 139     DOWNLOAD *pdl;
 140
 141     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
 142         if(!strcmp(pdl->ps_name, ps_name))
 143             break;
 144     return pdl;
 145 }
 146
 147 /****************************************************************************
 148  *  is_room_for_font
 149  */
 150 static BOOL is_room_for_font(PSDRV_PDEVICE *physDev)
 151 {
 152     DOWNLOAD *pdl;
 153     int count = 0;
 154
 155     /* FIXME: should consider vm usage of each font and available printer memory.
 156        For now we allow up to two fonts to be downloaded at a time */
 157     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
 158         count++;
 159
 160     if(count > 1)
 161         return FALSE;
 162     return TRUE;
 163 }
 164
 165 /****************************************************************************
 166  *  get_bbox
 167  *
 168  * This retrieves the bounding box of the font in font units as well as
 169  * the size of the emsquare.  To avoid having to worry about mapping mode and
 170  * the font size we'll get the data directly from the TrueType HEAD table rather
 171  * than using GetOutlineTextMetrics.
 172  */
 173 static BOOL get_bbox(HDC hdc, RECT *rc, UINT *emsize)
 174 {
 175     BYTE head[54]; /* the head table is 54 bytes long */
 176
 177     if(GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, head, sizeof(head)) == GDI_ERROR)
 178     {
 179         ERR("Can't retrieve head table\n");
 180         return FALSE;
 181     }
 182     *emsize = GET_BE_WORD(head + 18); /* unitsPerEm */
 183     if(rc)
 184     {
 185         rc->left   = (signed short)GET_BE_WORD(head + 36); /* xMin */
 186         rc->bottom = (signed short)GET_BE_WORD(head + 38); /* yMin */
 187         rc->right  = (signed short)GET_BE_WORD(head + 40); /* xMax */
 188         rc->top    = (signed short)GET_BE_WORD(head + 42); /* yMax */
 189     }
 190     return TRUE;
 191 }
 192
 193 /****************************************************************************
 194  *  PSDRV_SelectDownloadFont
 195  *
 196  *  Set up physDev->font for a downloadable font
 197  *
 198  */
 199 BOOL PSDRV_SelectDownloadFont(PSDRV_PDEVICE *physDev)
 200 {
 201     physDev->font.fontloc = Download;
 202     physDev->font.fontinfo.Download = NULL;
 203
 204     return TRUE;
 205 }
 206
 207 static UINT calc_ppem_for_height(HDC hdc, LONG height)
 208 {
 209     BYTE os2[78]; /* size of version 0 table */
 210     BYTE hhea[8]; /* just enough to get the ascender and descender */
 211     LONG ascent = 0, descent = 0;
 212     UINT emsize;
 213
 214     if(height < 0) return -height;
 215
 216     if(GetFontData(hdc, MS_MAKE_TAG('O','S','/','2'), 0, os2, sizeof(os2)) == sizeof(os2))
 217     {
 218         ascent  = GET_BE_WORD(os2 + 74); /* usWinAscent */
 219         descent = GET_BE_WORD(os2 + 76); /* usWinDescent */
 220     }
 221
 222     if(ascent + descent == 0)
 223     {
 224         if(GetFontData(hdc, MS_MAKE_TAG('h','h','e','a'), 0, hhea, sizeof(hhea)) == sizeof(hhea))
 225         {
 226             ascent  =  (signed short)GET_BE_WORD(hhea + 4); /* Ascender */
 227             descent = -(signed short)GET_BE_WORD(hhea + 6); /* Descender */
 228         }
 229     }
 230
 231     if(ascent + descent == 0) return height;
 232
 233     get_bbox(hdc, NULL, &emsize);
 234
 235     return MulDiv(emsize, height, ascent + descent);
 236 }
 237
 238 static inline float ps_round(float f)
 239 {
 240     return (f > 0) ? (f + 0.5) : (f - 0.5);
 241 }
 242 /****************************************************************************
 243  *  PSDRV_WriteSetDownloadFont
 244  *
 245  *  Write setfont for download font.
 246  *
 247  */
 248 BOOL PSDRV_WriteSetDownloadFont(PSDRV_PDEVICE *physDev)
 249 {
 250     char *ps_name;
 251     LPOUTLINETEXTMETRICA potm;
 252     DWORD len = GetOutlineTextMetricsA(physDev->hdc, 0, NULL);
 253     DOWNLOAD *pdl;
 254     LOGFONTW lf;
 255     UINT ppem;
 256     XFORM xform;
 257
 258     assert(physDev->font.fontloc == Download);
 259
 260     potm = HeapAlloc(GetProcessHeap(), 0, len);
 261     GetOutlineTextMetricsA(physDev->hdc, len, potm);
 262
 263     get_download_name(physDev, potm, &ps_name);
 264     physDev->font.fontinfo.Download = is_font_downloaded(physDev, ps_name);
 265
 266     if (!GetObjectW( GetCurrentObject(physDev->hdc, OBJ_FONT), sizeof(lf), &lf ))
 267         return FALSE;
 268
 269     ppem = calc_ppem_for_height(physDev->hdc, lf.lfHeight);
 270
 271     /* Retrieve the world -> device transform */
 272     GetTransform(physDev->hdc, 0x204, &xform);
 273
 274     physDev->font.size.xx = ps_round(ppem * xform.eM11);
 275     physDev->font.size.xy = ps_round(ppem * xform.eM12);
 276     physDev->font.size.yx = ps_round(ppem * xform.eM21);
 277     physDev->font.size.yy = ps_round(ppem * xform.eM22);
 278
 279     switch(GetMapMode(physDev->hdc))
 280     {
 281     case MM_TEXT:
 282     case MM_ISOTROPIC:
 283     case MM_ANISOTROPIC:
 284         physDev->font.size.yx *= -1;
 285         physDev->font.size.yy *= -1;
 286     }
 287
 288     physDev->font.underlineThickness = potm->otmsUnderscoreSize;
 289     physDev->font.underlinePosition = potm->otmsUnderscorePosition;
 290     physDev->font.strikeoutThickness = potm->otmsStrikeoutSize;
 291     physDev->font.strikeoutPosition = potm->otmsStrikeoutPosition;
 292
 293     if(physDev->font.fontinfo.Download == NULL) {
 294         RECT bbox;
 295         UINT emsize;
 296
 297         if (!get_bbox(physDev->hdc, &bbox, &emsize)) {
 298             HeapFree(GetProcessHeap(), 0, potm);
 299             return FALSE;
 300         }
 301         if(!is_room_for_font(physDev))
 302             PSDRV_EmptyDownloadList(physDev, TRUE);
 303
 304         pdl = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*pdl));
 305         pdl->ps_name = HeapAlloc(GetProcessHeap(), 0, strlen(ps_name)+1);
 306         strcpy(pdl->ps_name, ps_name);
 307         pdl->next = NULL;
 308
 309         if(physDev->pi->ppd->TTRasterizer == RO_Type42) {
 310             pdl->typeinfo.Type42 = T42_download_header(physDev, ps_name, &bbox, emsize);
 311             pdl->type = Type42;
 312         }
 313         if(pdl->typeinfo.Type42 == NULL) {
 314             pdl->typeinfo.Type1 = T1_download_header(physDev, ps_name, &bbox, emsize);
 315             pdl->type = Type1;
 316         }
 317         pdl->next = physDev->downloaded_fonts;
 318         physDev->downloaded_fonts = pdl;
 319         physDev->font.fontinfo.Download = pdl;
 320
 321         if(pdl->type == Type42) {
 322             char g_name[MAX_G_NAME + 1];
 323             get_glyph_name(physDev->hdc, 0, g_name);
 324             T42_download_glyph(physDev, pdl, 0, g_name);
 325         }
 326     }
 327
 328
 329     PSDRV_WriteSetFont(physDev, ps_name, physDev->font.size,
 330                        physDev->font.escapement);
 331
 332     HeapFree(GetProcessHeap(), 0, ps_name);
 333     HeapFree(GetProcessHeap(), 0, potm);
 334     return TRUE;
 335 }
 336
 337 void get_glyph_name(HDC hdc, WORD index, char *name)
 338 {
 339   /* FIXME */
 340     sprintf(name, "g%04x", index);
 341     return;
 342 }
 343
 344 /****************************************************************************
 345  *  PSDRV_WriteDownloadGlyphShow
 346  *
 347  *  Download and write out a number of glyphs
 348  *
 349  */
 350 BOOL PSDRV_WriteDownloadGlyphShow(PSDRV_PDEVICE *physDev, WORD *glyphs,
 351                                   UINT count)
 352 {
 353     UINT i;
 354     char g_name[MAX_G_NAME + 1];
 355     assert(physDev->font.fontloc == Download);
 356
 357     switch(physDev->font.fontinfo.Download->type) {
 358     case Type42:
 359     for(i = 0; i < count; i++) {
 360         get_glyph_name(physDev->hdc, glyphs[i], g_name);
 361         T42_download_glyph(physDev, physDev->font.fontinfo.Download,
 362                            glyphs[i], g_name);
 363         PSDRV_WriteGlyphShow(physDev, g_name);
 364     }
 365     break;
 366
 367     case Type1:
 368     for(i = 0; i < count; i++) {
 369         get_glyph_name(physDev->hdc, glyphs[i], g_name);
 370         T1_download_glyph(physDev, physDev->font.fontinfo.Download,
 371                           glyphs[i], g_name);
 372         PSDRV_WriteGlyphShow(physDev, g_name);
 373     }
 374     break;
 375
 376     default:
 377         ERR("Type = %d\n", physDev->font.fontinfo.Download->type);
 378         assert(0);
 379     }
 380     return TRUE;
 381 }
 382
 383 /****************************************************************************
 384  *  PSDRV_EmptyDownloadList
 385  *
 386  *  Clear the list of downloaded fonts
 387  *
 388  */
 389 BOOL PSDRV_EmptyDownloadList(PSDRV_PDEVICE *physDev, BOOL write_undef)
 390 {
 391     DOWNLOAD *pdl, *old;
 392     static const char undef[] = "/%s findfont 40 scalefont setfont /%s undefinefont\n";
 393     char buf[sizeof(undef) + 200];
 394     const char *default_font = physDev->pi->ppd->DefaultFont ?
 395         physDev->pi->ppd->DefaultFont : "Courier";
 396
 397     if(physDev->font.fontloc == Download) {
 398         physDev->font.set = FALSE;
 399         physDev->font.fontinfo.Download = NULL;
 400     }
 401
 402     pdl = physDev->downloaded_fonts;
 403     physDev->downloaded_fonts = NULL;
 404     while(pdl) {
 405         if(write_undef) {
 406             sprintf(buf, undef, default_font, pdl->ps_name);
 407             PSDRV_WriteSpool(physDev, buf, strlen(buf));
 408         }
 409
 410         switch(pdl->type) {
 411         case Type42:
 412             T42_free(pdl->typeinfo.Type42);
 413             break;
 414
 415         case Type1:
 416             T1_free(pdl->typeinfo.Type1);
 417             break;
 418
 419         default:
 420             ERR("Type = %d\n", pdl->type);
 421             assert(0);
 422         }
 423
 424         HeapFree(GetProcessHeap(), 0, pdl->ps_name);
 425         old = pdl;
 426         pdl = pdl->next;
 427         HeapFree(GetProcessHeap(), 0, old);
 428     }
 429     return TRUE;
 430 }