dlls/wineps/type42.c

   1 /*
   2  *      PostScript driver Type42 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 <stdarg.h>
  23 #include <stdio.h>
  24 #include <assert.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winerror.h"
  29 #include "wingdi.h"
  30 #include "winspool.h"
  31
  32 #include "psdrv.h"
  33 #include "wine/debug.h"
  34 #include "config.h"
  35 #include "wine/port.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  38
  39
  40 #define GET_BE_WORD(ptr)  MAKEWORD( ((BYTE *)(ptr))[1], ((BYTE *)(ptr))[0] )
  41 #define GET_BE_DWORD(ptr) ((DWORD)MAKELONG( GET_BE_WORD(&((WORD *)(ptr))[1]), \
  42                                             GET_BE_WORD(&((WORD *)(ptr))[0]) ))
  43
  44 #define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
  45           ( ( (DWORD)_x4 << 24 ) |     \
  46             ( (DWORD)_x3 << 16 ) |     \
  47             ( (DWORD)_x2 <<  8 ) |     \
  48               (DWORD)_x1         )
  49
  50 typedef struct {
  51   DWORD MS_tag;
  52   DWORD len, check;
  53   BYTE *data;
  54   BOOL write;
  55 } OTTable;
  56
  57 const OTTable tables_templ[] = {
  58       { MS_MAKE_TAG('c','v','t',' '), 0, 0, NULL, TRUE },
  59       { MS_MAKE_TAG('f','p','g','m'), 0, 0, NULL, TRUE },
  60       { MS_MAKE_TAG('g','d','i','r'), 0, 0, NULL, TRUE },
  61       { MS_MAKE_TAG('g','l','y','f'), 0, 0, NULL, FALSE },
  62       { MS_MAKE_TAG('h','e','a','d'), 0, 0, NULL, TRUE },
  63       { MS_MAKE_TAG('h','h','e','a'), 0, 0, NULL, TRUE },
  64       { MS_MAKE_TAG('h','m','t','x'), 0, 0, NULL, TRUE },
  65       { MS_MAKE_TAG('l','o','c','a'), 0, 0, NULL, TRUE },
  66       { MS_MAKE_TAG('m','a','x','p'), 0, 0, NULL, TRUE },
  67       { MS_MAKE_TAG('p','r','e','p'), 0, 0, NULL, TRUE },
  68       { 0, 0, 0, NULL, 0 }
  69 };
  70
  71 struct tagTYPE42 {
  72     OTTable tables[sizeof(tables_templ)/sizeof(tables_templ[0])];
  73     int glyf_tab, loca_tab, head_tab; /* indices of glyf, loca and head tables */
  74     int hmtx_tab, maxp_tab;
  75     int num_of_written_tables;
  76     DWORD glyph_sent_size;
  77     BOOL *glyph_sent;
  78     DWORD emsize;
  79     DWORD *glyf_blocks;
  80 };
  81
  82 #define GLYPH_SENT_INC 128
  83
  84 #define FLIP_ORDER(x) \
  85  ( ( ((x) & 0xff) << 24) | \
  86    ( ((x) & 0xff00) << 8) | \
  87    ( ((x) & 0xff0000) >> 8) | \
  88    ( ((x) & 0xff000000) >> 24) )
  89
  90
  91 /* Some flags for composite glyphs.  See glyf table in OT spec */
  92 #define ARG_1_AND_2_ARE_WORDS    (1L << 0)
  93 #define WE_HAVE_A_SCALE          (1L << 3)
  94 #define MORE_COMPONENTS          (1L << 5)
  95 #define WE_HAVE_AN_X_AND_Y_SCALE (1L << 6)
  96 #define WE_HAVE_A_TWO_BY_TWO     (1L << 7)
  97
  98
  99 static BOOL LoadTable(HDC hdc, OTTable *table)
 100 {
 101     int i;
 102
 103     if(table->MS_tag == MS_MAKE_TAG('g','d','i','r')) return TRUE;
 104     table->len = GetFontData(hdc, table->MS_tag, 0, NULL, 0);
 105     table->data = HeapAlloc(GetProcessHeap(), 0, (table->len + 3) & ~3 );
 106     memset(table->data + ((table->len - 1) & ~3), 0, sizeof(DWORD));
 107     GetFontData(hdc, table->MS_tag, 0, table->data, table->len);
 108     table->check = 0;
 109     for(i = 0; i < (table->len + 3) / 4; i++)
 110         table->check += FLIP_ORDER(*((DWORD*)(table->data) + i));
 111     return TRUE;
 112 }
 113
 114 static BOOL get_glyf_pos(TYPE42 *t42, DWORD index, DWORD *start, DWORD *end)
 115 {
 116     WORD loca_format = GET_BE_WORD(t42->tables[t42->head_tab].data + 50);
 117     TRACE("loca_format = %d\n", loca_format);
 118     switch(loca_format) {
 119     case 0:
 120         *start = GET_BE_WORD(((WORD*)t42->tables[t42->loca_tab].data) + index);
 121         *start <<= 1;
 122         *end = GET_BE_WORD(((WORD*)t42->tables[t42->loca_tab].data) + index + 1);
 123         *end <<= 1;
 124         break;
 125     case 1:
 126         *start = GET_BE_DWORD(((DWORD*)t42->tables[t42->loca_tab].data) + index);
 127         *end = GET_BE_DWORD(((DWORD*)t42->tables[t42->loca_tab].data) + index + 1);
 128         break;
 129     default:
 130         ERR("Unknown loca_format %d\n", loca_format);
 131         return FALSE;
 132     }
 133     return TRUE;
 134 }
 135
 136 TYPE42 *T42_download_header(PSDRV_PDEVICE *physDev, char *ps_name,
 137                             RECT *bbox, UINT emsize)
 138 {
 139     DWORD i, j, tablepos, nb_blocks, glyf_off = 0, loca_off = 0, cur_off;
 140     WORD num_of_tables = sizeof(tables_templ) / sizeof(tables_templ[0]) - 1;
 141     char *buf;
 142     TYPE42 *t42;
 143     const char start[] = /* name, fontbbox */
 144             "25 dict begin\n"
 145             " /FontName /%s def\n"
 146             " /Encoding 256 array 0 1 255{1 index exch /.notdef put} for\n"
 147             " def\n"
 148             " /PaintType 0 def\n"
 149             " /FontMatrix [1 0 0 1 0 0] def\n"
 150             " /FontBBox [%f %f %f %f] def\n"
 151             " /FontType 42 def\n"
 152             " /CharStrings 256 dict begin\n"
 153             "  /.notdef 0 def\n"
 154             " currentdict end def\n"
 155             " /sfnts [\n";
 156     const char TT_offset_table[] = "<00010000%04x%04x%04x%04x\n";
 157     const char TT_table_dir_entry[] = "%08lx%08lx%08lx%08lx\n";
 158     const char storage[] ="]\nhavetype42gdir{pop}{{string} forall}ifelse\n";
 159     const char end[] = "] def\n"
 160       "havetype42gdir{/GlyphDirectory 256 dict def\n"
 161       " sfnts 0 get dup %ld (locx) putinterval %ld (glfx) putinterval}if\n"
 162       "currentdict end dup /FontName get exch definefont pop\n";
 163
 164
 165     t42 = HeapAlloc(GetProcessHeap(), 0, sizeof(*t42));
 166     memcpy(t42->tables, tables_templ, sizeof(tables_templ));
 167     t42->loca_tab = t42->glyf_tab = t42->head_tab = t42->hmtx_tab = -1;
 168     t42->emsize = emsize;
 169     t42->num_of_written_tables = 0;
 170
 171     for(i = 0; i < num_of_tables; i++) {
 172         LoadTable(physDev->hdc, t42->tables + i);
 173         if(t42->tables[i].len > 0xffff && t42->tables[i].write) break;
 174         if(t42->tables[i].write) t42->num_of_written_tables++;
 175         if(t42->tables[i].MS_tag == MS_MAKE_TAG('l','o','c','a'))
 176             t42->loca_tab = i;
 177         else if(t42->tables[i].MS_tag == MS_MAKE_TAG('g','l','y','f'))
 178             t42->glyf_tab = i;
 179         else if(t42->tables[i].MS_tag == MS_MAKE_TAG('h','e','a','d'))
 180             t42->head_tab = i;
 181         else if(t42->tables[i].MS_tag == MS_MAKE_TAG('h','m','t','x'))
 182             t42->hmtx_tab = i;
 183         else if(t42->tables[i].MS_tag == MS_MAKE_TAG('m','a','x','p'))
 184             t42->maxp_tab = i;
 185     }
 186     if(i < num_of_tables) {
 187         TRACE("Table %ld has length %ld.  Will use Type 1 font instead.\n", i, t42->tables[i].len);
 188         T42_free(t42);
 189         return NULL;
 190     }
 191
 192     t42->glyph_sent_size = GLYPH_SENT_INC;
 193     t42->glyph_sent = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 194                                 t42->glyph_sent_size *
 195                                 sizeof(*(t42->glyph_sent)));
 196
 197     buf = HeapAlloc(GetProcessHeap(), 0, sizeof(start) + strlen(ps_name) +
 198                     100);
 199
 200     sprintf(buf, start, ps_name,
 201             (float)bbox->left / emsize, (float)bbox->bottom / emsize,
 202             (float)bbox->right / emsize, (float)bbox->top / emsize);
 203
 204     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 205
 206     t42->num_of_written_tables++; /* explicitly add glyf */
 207     sprintf(buf, TT_offset_table, t42->num_of_written_tables,
 208             t42->num_of_written_tables, t42->num_of_written_tables, t42->num_of_written_tables);
 209
 210     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 211
 212     tablepos = 12 + t42->num_of_written_tables * 16;
 213     cur_off = 12;
 214     for(i = 0; i < num_of_tables; i++) {
 215         if(!t42->tables[i].write) continue;
 216         sprintf(buf, TT_table_dir_entry, FLIP_ORDER(t42->tables[i].MS_tag),
 217                 t42->tables[i].check, t42->tables[i].len ? tablepos : 0,
 218                 t42->tables[i].len);
 219         PSDRV_WriteSpool(physDev, buf, strlen(buf));
 220         tablepos += ((t42->tables[i].len + 3) & ~3);
 221         if(t42->tables[i].MS_tag == MS_MAKE_TAG('l','o','c','a'))
 222             loca_off = cur_off;
 223         cur_off += 16;
 224     }
 225     sprintf(buf, TT_table_dir_entry, FLIP_ORDER(t42->tables[t42->glyf_tab].MS_tag),
 226             t42->tables[t42->glyf_tab].check, tablepos, t42->tables[t42->glyf_tab].len);
 227     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 228     PSDRV_WriteSpool(physDev, "00>\n", 4); /* add an extra byte for old PostScript rips */
 229     glyf_off = cur_off;
 230
 231     for(i = 0; i < num_of_tables; i++) {
 232         if(t42->tables[i].len == 0 || !t42->tables[i].write) continue;
 233         PSDRV_WriteSpool(physDev, "<", 1);
 234         for(j = 0; j < ((t42->tables[i].len + 3) & ~3); j++) {
 235             sprintf(buf, "%02x", t42->tables[i].data[j]);
 236             PSDRV_WriteSpool(physDev, buf, strlen(buf));
 237             if(j % 16 == 15) PSDRV_WriteSpool(physDev, "\n", 1);
 238         }
 239         PSDRV_WriteSpool(physDev, "00>\n", 4); /* add an extra byte for old PostScript rips */
 240     }
 241
 242     /* glyf_blocks is a 0 terminated list, holding the start offset of each block.  For simplicity
 243        glyf_blocks[0] is 0 */
 244     nb_blocks = 2;
 245     t42->glyf_blocks = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (nb_blocks + 1) * sizeof(DWORD));
 246     for(i = 0; i < GET_BE_WORD(t42->tables[t42->maxp_tab].data + 4); i++) {
 247         DWORD start, end, size;
 248         get_glyf_pos(t42, i, &start, &end);
 249         size = end - t42->glyf_blocks[nb_blocks-2];
 250         if(size > 0x2000 && t42->glyf_blocks[nb_blocks-1] % 4 == 0) {
 251             nb_blocks++;
 252             t42->glyf_blocks = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 253                                            t42->glyf_blocks, (nb_blocks + 1) * sizeof(DWORD));
 254         }
 255         t42->glyf_blocks[nb_blocks-1] = end;
 256     }
 257
 258     PSDRV_WriteSpool(physDev, "[ ", 2);
 259     for(i = 1; t42->glyf_blocks[i]; i++) {
 260         sprintf(buf,"%ld ", t42->glyf_blocks[i] - t42->glyf_blocks[i-1] + 1);
 261         /* again add one byte for old PostScript rips */
 262         PSDRV_WriteSpool(physDev, buf, strlen(buf));
 263         if(i % 8 == 0)
 264             PSDRV_WriteSpool(physDev, "\n", 1);
 265     }
 266     PSDRV_WriteSpool(physDev, storage, sizeof(storage) - 1);
 267     sprintf(buf, end, loca_off, glyf_off);
 268     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 269     HeapFree(GetProcessHeap(), 0, buf);
 270     return t42;
 271 }
 272
 273
 274
 275
 276 BOOL T42_download_glyph(PSDRV_PDEVICE *physDev, DOWNLOAD *pdl, DWORD index,
 277                         char *glyph_name)
 278 {
 279     DWORD start, end, i;
 280     char *buf;
 281     TYPE42 *t42;
 282     WORD awidth;
 283     short lsb;
 284
 285     const char glyph_def[] =
 286       "/%s findfont exch 1 index\n"
 287       "havetype42gdir\n"
 288       "{/GlyphDirectory get begin %ld exch def end}\n"
 289       "{/sfnts get 4 index get 3 index 2 index putinterval pop}\n"
 290       "ifelse\n"
 291       "/CharStrings get\n"
 292       "begin\n"
 293       " /%s %ld def\n"
 294       "end\n"
 295       "pop pop\n";
 296
 297     TRACE("%ld %s\n", index, glyph_name);
 298     assert(pdl->type == Type42);
 299     t42 = pdl->typeinfo.Type42;
 300
 301     if(index < t42->glyph_sent_size) {
 302         if(t42->glyph_sent[index])
 303             return TRUE;
 304     } else {
 305         t42->glyph_sent_size = (index / GLYPH_SENT_INC + 1) * GLYPH_SENT_INC;
 306         t42->glyph_sent = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 307                                       t42->glyph_sent,
 308                                       t42->glyph_sent_size * sizeof(*(t42->glyph_sent)));
 309     }
 310
 311     buf = HeapAlloc(GetProcessHeap(), 0, sizeof(glyph_def) +
 312                     strlen(pdl->ps_name) + 100);
 313
 314     if(!get_glyf_pos(t42, index, &start, &end)) return FALSE;
 315     TRACE("start = %lx end = %lx\n", start, end);
 316
 317     awidth = GET_BE_WORD(t42->tables[t42->hmtx_tab].data + index * 4);
 318     lsb = GET_BE_WORD(t42->tables[t42->hmtx_tab].data + index * 4 + 2);
 319
 320     if(GET_BE_WORD(t42->tables[t42->glyf_tab].data + start) == 0xffff) {
 321       /* Composite glyph */
 322         char *sg_start = t42->tables[t42->glyf_tab].data + start + 10;
 323         DWORD sg_flags, sg_index;
 324         char sg_name[MAX_G_NAME + 1];
 325
 326         do {
 327             sg_flags = GET_BE_WORD(sg_start);
 328             sg_index = GET_BE_WORD(sg_start + 2);
 329
 330             TRACE("Sending subglyph %04lx for glyph %04lx\n", sg_index, index);
 331             get_glyph_name(physDev->hdc, sg_index, sg_name);
 332             T42_download_glyph(physDev, pdl, sg_index, sg_name);
 333             sg_start += 4;
 334             if(sg_flags & ARG_1_AND_2_ARE_WORDS)
 335                 sg_start += 4;
 336             else
 337                 sg_start += 2;
 338             if(sg_flags & WE_HAVE_A_SCALE)
 339                 sg_start += 2;
 340             else if(sg_flags & WE_HAVE_AN_X_AND_Y_SCALE)
 341                 sg_start += 4;
 342             else if(sg_flags & WE_HAVE_A_TWO_BY_TWO)
 343                 sg_start += 8;
 344         } while(sg_flags & MORE_COMPONENTS);
 345     }
 346
 347     for(i = 1; t42->glyf_blocks[i]; i++)
 348         if(start < t42->glyf_blocks[i]) break;
 349     /* we don't have a string for the gdir and glyf tables, but we do have a
 350        string for the TT header.  So the offset we need is tables - 2 */
 351     sprintf(buf, "%ld %ld\n", t42->num_of_written_tables - 2 + i, start - t42->glyf_blocks[i-1]);
 352     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 353
 354     PSDRV_WriteSpool(physDev, "<", 1);
 355     for(i = start; i < end; i++) {
 356         sprintf(buf, "%02x", *(t42->tables[t42->glyf_tab].data + i));
 357         PSDRV_WriteSpool(physDev, buf, strlen(buf));
 358         if((i - start) % 16 == 15)
 359             PSDRV_WriteSpool(physDev, "\n", 1);
 360     }
 361     PSDRV_WriteSpool(physDev, ">\n", 2);
 362     sprintf(buf, glyph_def, pdl->ps_name, index, glyph_name, index);
 363     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 364
 365     t42->glyph_sent[index] = TRUE;
 366     HeapFree(GetProcessHeap(), 0, buf);
 367     return TRUE;
 368 }
 369
 370 void T42_free(TYPE42 *t42)
 371 {
 372     OTTable *table;
 373     for(table = t42->tables; table->MS_tag; table++)
 374         if(table->data) HeapFree(GetProcessHeap(), 0, table->data);
 375     if(t42->glyph_sent) HeapFree(GetProcessHeap(), 0, t42->glyph_sent);
 376     if(t42->glyf_blocks) HeapFree(GetProcessHeap(), 0, t42->glyf_blocks);
 377     HeapFree(GetProcessHeap(), 0, t42);
 378     return;
 379 }