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 <math.h>
  24 #include <stdarg.h>
  25 #include <stdio.h>
  26
  27 #include "windef.h"
  28 #include "winbase.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 #define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
  38           ( ( (DWORD)_x4 << 24 ) |     \
  39             ( (DWORD)_x3 << 16 ) |     \
  40             ( (DWORD)_x2 <<  8 ) |     \
  41               (DWORD)_x1         )
  42
  43 #define GET_BE_WORD(ptr)  MAKEWORD( ((BYTE *)(ptr))[1], ((BYTE *)(ptr))[0] )
  44 #define GET_BE_DWORD(ptr) ((DWORD)MAKELONG( GET_BE_WORD(&((WORD *)(ptr))[1]), \
  45                                             GET_BE_WORD(&((WORD *)(ptr))[0]) ))
  46
  47 /****************************************************************************
  48  *  get_download_name
  49  */
  50 static void get_download_name(PHYSDEV dev, LPOUTLINETEXTMETRICA potm, char **str, BOOL vertical)
  51 {
  52     static const char reserved_chars[] = " %/(){}[]<>\n\r\t\b\f";
  53     static const char vertical_suffix[] = "_vert";
  54     int len;
  55     char *p;
  56     DWORD size;
  57
  58     size = GetFontData(dev->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(dev->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 + sizeof(vertical_suffix));
  94                     memcpy(*str, strings + name_record->offset, name_record->length);
  95                     *(*str + name_record->length) = '\0';
  96                     HeapFree(GetProcessHeap(), 0, name);
  97                     goto done;
  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 + sizeof(vertical_suffix) - 1);
 112                     WideCharToMultiByte(1252, 0, unicode, -1, *str, len, NULL, NULL);
 113                     HeapFree(GetProcessHeap(), 0, unicode);
 114                     HeapFree(GetProcessHeap(), 0, name);
 115                     goto done;
 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->otmpFaceName) + 1;
 124     *str = HeapAlloc(GetProcessHeap(),0,len + sizeof(vertical_suffix) - 1);
 125     strcpy(*str, (char*)potm + (ptrdiff_t)potm->otmpFaceName);
 126
 127 done:
 128     for (p = *str; *p; p++) if (strchr( reserved_chars, *p )) *p = '_';
 129     if (vertical)
 130         strcat(*str,vertical_suffix);
 131 }
 132
 133 /****************************************************************************
 134  *  is_font_downloaded
 135  */
 136 static DOWNLOAD *is_font_downloaded(PSDRV_PDEVICE *physDev, char *ps_name)
 137 {
 138     DOWNLOAD *pdl;
 139
 140     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
 141         if(!strcmp(pdl->ps_name, ps_name))
 142             break;
 143     return pdl;
 144 }
 145
 146 /****************************************************************************
 147  *  is_room_for_font
 148  */
 149 static BOOL is_room_for_font(PSDRV_PDEVICE *physDev)
 150 {
 151     DOWNLOAD *pdl;
 152     int count = 0;
 153
 154     /* FIXME: should consider vm usage of each font and available printer memory.
 155        For now we allow up to two fonts to be downloaded at a time */
 156     for(pdl = physDev->downloaded_fonts; pdl; pdl = pdl->next)
 157         count++;
 158
 159     if(count > 1)
 160         return FALSE;
 161     return TRUE;
 162 }
 163
 164 /****************************************************************************
 165  *  get_bbox
 166  *
 167  * This retrieves the bounding box of the font in font units as well as
 168  * the size of the emsquare.  To avoid having to worry about mapping mode and
 169  * the font size we'll get the data directly from the TrueType HEAD table rather
 170  * than using GetOutlineTextMetrics.
 171  */
 172 static UINT get_bbox(HDC hdc, RECT *rc)
 173 {
 174     BYTE head[54]; /* the head table is 54 bytes long */
 175
 176     if(GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, head, sizeof(head)) == GDI_ERROR)
 177     {
 178         ERR("Can't retrieve head table\n");
 179         return 0;
 180     }
 181     if(rc)
 182     {
 183         rc->left   = (signed short)GET_BE_WORD(head + 36); /* xMin */
 184         rc->bottom = (signed short)GET_BE_WORD(head + 38); /* yMin */
 185         rc->right  = (signed short)GET_BE_WORD(head + 40); /* xMax */
 186         rc->top    = (signed short)GET_BE_WORD(head + 42); /* yMax */
 187     }
 188     return GET_BE_WORD(head + 18); /* unitsPerEm */
 189 }
 190
 191 /****************************************************************************
 192  *  PSDRV_SelectDownloadFont
 193  *
 194  *  Set up physDev->font for a downloadable font
 195  *
 196  */
 197 BOOL PSDRV_SelectDownloadFont(PHYSDEV dev)
 198 {
 199     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 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     emsize = get_bbox(hdc, NULL);
 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 static BOOL is_fake_italic( HDC hdc )
 244 {
 245     TEXTMETRICW tm;
 246     BYTE head[54]; /* the head table is 54 bytes long */
 247     WORD mac_style;
 248
 249     GetTextMetricsW( hdc, &tm );
 250     if (!tm.tmItalic) return FALSE;
 251
 252     if (GetFontData( hdc, MS_MAKE_TAG('h','e','a','d'), 0, head, sizeof(head) ) == GDI_ERROR)
 253         return FALSE;
 254
 255     mac_style = GET_BE_WORD( head + 44 );
 256     TRACE( "mac style %04x\n", mac_style );
 257     return !(mac_style & 2);
 258 }
 259
 260 /****************************************************************************
 261  *  PSDRV_WriteSetDownloadFont
 262  *
 263  *  Write setfont for download font.
 264  *
 265  */
 266 BOOL PSDRV_WriteSetDownloadFont(PHYSDEV dev, BOOL vertical)
 267 {
 268     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 269     char *ps_name;
 270     LPOUTLINETEXTMETRICA potm;
 271     DWORD len = GetOutlineTextMetricsA(dev->hdc, 0, NULL);
 272     DOWNLOAD *pdl;
 273     LOGFONTW lf;
 274     UINT ppem;
 275     XFORM xform;
 276     INT escapement;
 277
 278     assert(physDev->font.fontloc == Download);
 279
 280     if (!GetObjectW( GetCurrentObject(dev->hdc, OBJ_FONT), sizeof(lf), &lf ))
 281         return FALSE;
 282
 283     potm = HeapAlloc(GetProcessHeap(), 0, len);
 284     if (!potm)
 285         return FALSE;
 286
 287     GetOutlineTextMetricsA(dev->hdc, len, potm);
 288
 289     get_download_name(dev, potm, &ps_name, vertical);
 290     physDev->font.fontinfo.Download = is_font_downloaded(physDev, ps_name);
 291
 292     ppem = calc_ppem_for_height(dev->hdc, lf.lfHeight);
 293
 294     /* Retrieve the world -> device transform */
 295     GetTransform(dev->hdc, 0x204, &xform);
 296
 297     if(GetGraphicsMode(dev->hdc) == GM_COMPATIBLE)
 298     {
 299         if (xform.eM22 < 0) physDev->font.escapement = -physDev->font.escapement;
 300         xform.eM11 = xform.eM22 = fabs(xform.eM22);
 301         xform.eM21 = xform.eM12 = 0;
 302     }
 303
 304     physDev->font.size.xx = ps_round(ppem * xform.eM11);
 305     physDev->font.size.xy = ps_round(ppem * xform.eM12);
 306     physDev->font.size.yx = -ps_round(ppem * xform.eM21);
 307     physDev->font.size.yy = -ps_round(ppem * xform.eM22);
 308
 309     physDev->font.underlineThickness = potm->otmsUnderscoreSize;
 310     physDev->font.underlinePosition = potm->otmsUnderscorePosition;
 311     physDev->font.strikeoutThickness = potm->otmsStrikeoutSize;
 312     physDev->font.strikeoutPosition = potm->otmsStrikeoutPosition;
 313
 314     if(physDev->font.fontinfo.Download == NULL) {
 315         RECT bbox;
 316         UINT emsize = get_bbox(dev->hdc, &bbox);
 317
 318         if (!emsize) {
 319             HeapFree(GetProcessHeap(), 0, ps_name);
 320             HeapFree(GetProcessHeap(), 0, potm);
 321             return FALSE;
 322         }
 323         if(!is_room_for_font(physDev))
 324             PSDRV_EmptyDownloadList(dev, TRUE);
 325
 326         pdl = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*pdl));
 327         pdl->ps_name = HeapAlloc(GetProcessHeap(), 0, strlen(ps_name)+1);
 328         strcpy(pdl->ps_name, ps_name);
 329         pdl->next = NULL;
 330
 331         if(physDev->pi->ppd->TTRasterizer == RO_Type42) {
 332             pdl->typeinfo.Type42 = T42_download_header(dev, ps_name, &bbox, emsize);
 333             pdl->type = Type42;
 334         }
 335         if(pdl->typeinfo.Type42 == NULL) {
 336             pdl->typeinfo.Type1 = T1_download_header(dev, ps_name, &bbox, emsize);
 337             pdl->type = Type1;
 338         }
 339         pdl->next = physDev->downloaded_fonts;
 340         physDev->downloaded_fonts = pdl;
 341         physDev->font.fontinfo.Download = pdl;
 342
 343         if(pdl->type == Type42) {
 344             char g_name[MAX_G_NAME + 1];
 345             get_glyph_name(dev->hdc, 0, g_name);
 346             T42_download_glyph(dev, pdl, 0, g_name);
 347         }
 348     }
 349
 350     escapement = physDev->font.escapement;
 351     if (vertical)
 352         escapement += 900;
 353
 354     PSDRV_WriteSetFont(dev, ps_name, physDev->font.size, escapement,
 355                         is_fake_italic( dev->hdc ));
 356
 357     HeapFree(GetProcessHeap(), 0, ps_name);
 358     HeapFree(GetProcessHeap(), 0, potm);
 359     return TRUE;
 360 }
 361
 362 void get_glyph_name(HDC hdc, WORD index, char *name)
 363 {
 364   /* FIXME */
 365     sprintf(name, "g%04x", index);
 366     return;
 367 }
 368
 369 /****************************************************************************
 370  *  PSDRV_WriteDownloadGlyphShow
 371  *
 372  *  Download and write out a number of glyphs
 373  *
 374  */
 375 BOOL PSDRV_WriteDownloadGlyphShow(PHYSDEV dev, const WORD *glyphs,
 376                                   UINT count)
 377 {
 378     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 379     UINT i;
 380     char g_name[MAX_G_NAME + 1];
 381     assert(physDev->font.fontloc == Download);
 382
 383     switch(physDev->font.fontinfo.Download->type) {
 384     case Type42:
 385     for(i = 0; i < count; i++) {
 386         get_glyph_name(dev->hdc, glyphs[i], g_name);
 387         T42_download_glyph(dev, physDev->font.fontinfo.Download, glyphs[i], g_name);
 388         PSDRV_WriteGlyphShow(dev, g_name);
 389     }
 390     break;
 391
 392     case Type1:
 393     for(i = 0; i < count; i++) {
 394         get_glyph_name(dev->hdc, glyphs[i], g_name);
 395         T1_download_glyph(dev, physDev->font.fontinfo.Download, glyphs[i], g_name);
 396         PSDRV_WriteGlyphShow(dev, g_name);
 397     }
 398     break;
 399
 400     default:
 401         ERR("Type = %d\n", physDev->font.fontinfo.Download->type);
 402         assert(0);
 403     }
 404     return TRUE;
 405 }
 406
 407 /****************************************************************************
 408  *  PSDRV_EmptyDownloadList
 409  *
 410  *  Clear the list of downloaded fonts
 411  *
 412  */
 413 BOOL PSDRV_EmptyDownloadList(PHYSDEV dev, BOOL write_undef)
 414 {
 415     PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
 416     DOWNLOAD *pdl, *old;
 417     static const char undef[] = "/%s findfont 40 scalefont setfont /%s undefinefont\n";
 418     char buf[sizeof(undef) + 200];
 419     const char *default_font = physDev->pi->ppd->DefaultFont ?
 420         physDev->pi->ppd->DefaultFont : "Courier";
 421
 422     if(physDev->font.fontloc == Download) {
 423         physDev->font.set = FALSE;
 424         physDev->font.fontinfo.Download = NULL;
 425     }
 426
 427     pdl = physDev->downloaded_fonts;
 428     physDev->downloaded_fonts = NULL;
 429     while(pdl) {
 430         if(write_undef) {
 431             sprintf(buf, undef, default_font, pdl->ps_name);
 432             PSDRV_WriteSpool(dev, buf, strlen(buf));
 433         }
 434
 435         switch(pdl->type) {
 436         case Type42:
 437             T42_free(pdl->typeinfo.Type42);
 438             break;
 439
 440         case Type1:
 441             T1_free(pdl->typeinfo.Type1);
 442             break;
 443
 444         default:
 445             ERR("Type = %d\n", pdl->type);
 446             assert(0);
 447         }
 448
 449         HeapFree(GetProcessHeap(), 0, pdl->ps_name);
 450         old = pdl;
 451         pdl = pdl->next;
 452         HeapFree(GetProcessHeap(), 0, old);
 453     }
 454     return TRUE;
 455 }