dlls/wineps.drv/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <string.h>
  25 #include <stdlib.h>
  26 #include <stdarg.h>
  27 #include <stdio.h>
  28 #include <assert.h>
  29 #include <locale.h>
  30
  31 #include "windef.h"
  32 #include "winbase.h"
  33 #include "wingdi.h"
  34
  35 #include "psdrv.h"
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  39
  40
  41 #define GET_BE_WORD(ptr)  MAKEWORD( ((BYTE *)(ptr))[1], ((BYTE *)(ptr))[0] )
  42 #define GET_BE_DWORD(ptr) ((DWORD)MAKELONG( GET_BE_WORD(&((WORD *)(ptr))[1]), \
  43                                             GET_BE_WORD(&((WORD *)(ptr))[0]) ))
  44
  45 #define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
  46           ( ( (DWORD)_x4 << 24 ) |     \
  47             ( (DWORD)_x3 << 16 ) |     \
  48             ( (DWORD)_x2 <<  8 ) |     \
  49               (DWORD)_x1         )
  50
  51 typedef struct {
  52   DWORD MS_tag;
  53   DWORD len, check;
  54   BYTE *data;
  55   BOOL write;
  56 } OTTable;
  57
  58 static const OTTable tables_templ[] = {
  59       { MS_MAKE_TAG('c','v','t',' '), 0, 0, NULL, TRUE },
  60       { MS_MAKE_TAG('f','p','g','m'), 0, 0, NULL, TRUE },
  61       { MS_MAKE_TAG('g','d','i','r'), 0, 0, NULL, TRUE },
  62       { MS_MAKE_TAG('g','l','y','f'), 0, 0, NULL, FALSE },
  63       { MS_MAKE_TAG('h','e','a','d'), 0, 0, NULL, TRUE },
  64       { MS_MAKE_TAG('h','h','e','a'), 0, 0, NULL, TRUE },
  65       { MS_MAKE_TAG('h','m','t','x'), 0, 0, NULL, TRUE },
  66       { MS_MAKE_TAG('l','o','c','a'), 0, 0, NULL, TRUE },
  67       { MS_MAKE_TAG('m','a','x','p'), 0, 0, NULL, TRUE },
  68       { MS_MAKE_TAG('p','r','e','p'), 0, 0, NULL, TRUE },
  69       { 0, 0, 0, NULL, 0 }
  70 };
  71
  72 struct tagTYPE42 {
  73     OTTable tables[sizeof(tables_templ)/sizeof(tables_templ[0])];
  74     int glyf_tab, loca_tab, head_tab; /* indices of glyf, loca and head tables */
  75     int hmtx_tab, maxp_tab;
  76     int num_of_written_tables;
  77     DWORD glyph_sent_size;
  78     BOOL *glyph_sent;
  79     DWORD emsize;
  80     DWORD *glyf_blocks;
  81 };
  82
  83 #define GLYPH_SENT_INC 128
  84
  85 #define FLIP_ORDER(x) \
  86  ( ( ((x) & 0xff) << 24) | \
  87    ( ((x) & 0xff00) << 8) | \
  88    ( ((x) & 0xff0000) >> 8) | \
  89    ( ((x) & 0xff000000) >> 24) )
  90
  91
  92 /* Some flags for composite glyphs.  See glyf table in OT spec */
  93 #define ARG_1_AND_2_ARE_WORDS    (1L << 0)
  94 #define WE_HAVE_A_SCALE          (1L << 3)
  95 #define MORE_COMPONENTS          (1L << 5)
  96 #define WE_HAVE_AN_X_AND_Y_SCALE (1L << 6)
  97 #define WE_HAVE_A_TWO_BY_TWO     (1L << 7)
  98
  99
 100 static BOOL LoadTable(HDC hdc, OTTable *table)
 101 {
 102     unsigned int i;
 103
 104     if(table->MS_tag == MS_MAKE_TAG('g','d','i','r')) return TRUE;
 105     table->len = GetFontData(hdc, table->MS_tag, 0, NULL, 0);
 106     table->data = HeapAlloc(GetProcessHeap(), 0, (table->len + 3) & ~3 );
 107     memset(table->data + ((table->len - 1) & ~3), 0, sizeof(DWORD));
 108     GetFontData(hdc, table->MS_tag, 0, table->data, table->len);
 109     table->check = 0;
 110     for(i = 0; i < (table->len + 3) / 4; i++)
 111         table->check += FLIP_ORDER(*((DWORD*)(table->data) + i));
 112     return TRUE;
 113 }
 114
 115 static BOOL get_glyf_pos(TYPE42 *t42, DWORD index, DWORD *start, DWORD *end)
 116 {
 117     WORD loca_format = GET_BE_WORD(t42->tables[t42->head_tab].data + 50);
 118     TRACE("loca_format = %d\n", loca_format);
 119     switch(loca_format) {
 120     case 0:
 121         *start = GET_BE_WORD(((WORD*)t42->tables[t42->loca_tab].data) + index);
 122         *start <<= 1;
 123         *end = GET_BE_WORD(((WORD*)t42->tables[t42->loca_tab].data) + index + 1);
 124         *end <<= 1;
 125         break;
 126     case 1:
 127         *start = GET_BE_DWORD(((DWORD*)t42->tables[t42->loca_tab].data) + index);
 128         *end = GET_BE_DWORD(((DWORD*)t42->tables[t42->loca_tab].data) + index + 1);
 129         break;
 130     default:
 131         ERR("Unknown loca_format %d\n", loca_format);
 132         return FALSE;
 133     }
 134     return TRUE;
 135 }
 136
 137 TYPE42 *T42_download_header(PSDRV_PDEVICE *physDev, char *ps_name,
 138                             RECT *bbox, UINT emsize)
 139 {
 140     DWORD i, j, tablepos, nb_blocks, glyf_off = 0, loca_off = 0, cur_off;
 141     WORD num_of_tables = sizeof(tables_templ) / sizeof(tables_templ[0]) - 1;
 142     char *buf;
 143     TYPE42 *t42;
 144     static const char start[] = /* name, fontbbox */
 145             "25 dict begin\n"
 146             " /FontName /%s def\n"
 147             " /Encoding 256 array 0 1 255{1 index exch /.notdef put} for\n"
 148             " def\n"
 149             " /PaintType 0 def\n"
 150             " /FontMatrix [1 0 0 1 0 0] def\n"
 151             " /FontBBox [%f %f %f %f] def\n"
 152             " /FontType 42 def\n"
 153             " /CharStrings 256 dict begin\n"
 154             "  /.notdef 0 def\n"
 155             " currentdict end def\n"
 156             " /sfnts [\n";
 157     static const char TT_offset_table[] = "<00010000%04x%04x%04x%04x\n";
 158     static const char TT_table_dir_entry[] = "%08x%08x%08x%08x\n";
 159     static const char storage[] ="]\nhavetype42gdir{pop}{{string} forall}ifelse\n";
 160     static const char end[] = "] def\n"
 161       "havetype42gdir{/GlyphDirectory 256 dict def\n"
 162       " sfnts 0 get dup\n"
 163       "  %d <6c6f6378000000000000000000000000> putinterval\n" /* replace loca entry with dummy locx */
 164       "  %d <676c6678000000000000000000000000> putinterval\n" /* replace glyf entry with dummy glfx */
 165       " }if\n"
 166       "currentdict end dup /FontName get exch definefont pop\n";
 167
 168
 169     t42 = HeapAlloc(GetProcessHeap(), 0, sizeof(*t42));
 170     memcpy(t42->tables, tables_templ, sizeof(tables_templ));
 171     t42->loca_tab = t42->glyf_tab = t42->head_tab = t42->hmtx_tab = -1;
 172     t42->emsize = emsize;
 173     t42->num_of_written_tables = 0;
 174
 175     for(i = 0; i < num_of_tables; i++) {
 176         LoadTable(physDev->hdc, t42->tables + i);
 177         if(t42->tables[i].len > 0xffff && t42->tables[i].write) break;
 178         if(t42->tables[i].write) t42->num_of_written_tables++;
 179         if(t42->tables[i].MS_tag == MS_MAKE_TAG('l','o','c','a'))
 180             t42->loca_tab = i;
 181         else if(t42->tables[i].MS_tag == MS_MAKE_TAG('g','l','y','f'))
 182             t42->glyf_tab = i;
 183         else if(t42->tables[i].MS_tag == MS_MAKE_TAG('h','e','a','d'))
 184             t42->head_tab = i;
 185         else if(t42->tables[i].MS_tag == MS_MAKE_TAG('h','m','t','x'))
 186             t42->hmtx_tab = i;
 187         else if(t42->tables[i].MS_tag == MS_MAKE_TAG('m','a','x','p'))
 188             t42->maxp_tab = i;
 189     }
 190     if(i < num_of_tables) {
 191         TRACE("Table %d has length %d.  Will use Type 1 font instead.\n", i, t42->tables[i].len);
 192         T42_free(t42);
 193         return NULL;
 194     }
 195
 196     t42->glyph_sent_size = GLYPH_SENT_INC;
 197     t42->glyph_sent = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 198                                 t42->glyph_sent_size *
 199                                 sizeof(*(t42->glyph_sent)));
 200
 201     buf = HeapAlloc(GetProcessHeap(), 0, sizeof(start) + strlen(ps_name) +
 202                     100);
 203
 204     push_lc_numeric("C");
 205     sprintf(buf, start, ps_name,
 206             (float)bbox->left / emsize, (float)bbox->bottom / emsize,
 207             (float)bbox->right / emsize, (float)bbox->top / emsize);
 208     pop_lc_numeric();
 209
 210     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 211
 212     t42->num_of_written_tables++; /* explicitly add glyf */
 213     sprintf(buf, TT_offset_table, t42->num_of_written_tables,
 214             t42->num_of_written_tables, t42->num_of_written_tables, t42->num_of_written_tables);
 215
 216     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 217
 218     tablepos = 12 + t42->num_of_written_tables * 16;
 219     cur_off = 12;
 220     for(i = 0; i < num_of_tables; i++) {
 221         if(!t42->tables[i].write) continue;
 222         sprintf(buf, TT_table_dir_entry, FLIP_ORDER(t42->tables[i].MS_tag),
 223                 t42->tables[i].check, t42->tables[i].len ? tablepos : 0,
 224                 t42->tables[i].len);
 225         PSDRV_WriteSpool(physDev, buf, strlen(buf));
 226         tablepos += ((t42->tables[i].len + 3) & ~3);
 227         if(t42->tables[i].MS_tag == MS_MAKE_TAG('l','o','c','a'))
 228             loca_off = cur_off;
 229         cur_off += 16;
 230     }
 231     sprintf(buf, TT_table_dir_entry, FLIP_ORDER(t42->tables[t42->glyf_tab].MS_tag),
 232             t42->tables[t42->glyf_tab].check, tablepos, t42->tables[t42->glyf_tab].len);
 233     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 234     PSDRV_WriteSpool(physDev, "00>\n", 4); /* add an extra byte for old PostScript rips */
 235     glyf_off = cur_off;
 236
 237     for(i = 0; i < num_of_tables; i++) {
 238         if(t42->tables[i].len == 0 || !t42->tables[i].write) continue;
 239         PSDRV_WriteSpool(physDev, "<", 1);
 240         for(j = 0; j < ((t42->tables[i].len + 3) & ~3); j++) {
 241             sprintf(buf, "%02x", t42->tables[i].data[j]);
 242             PSDRV_WriteSpool(physDev, buf, strlen(buf));
 243             if(j % 16 == 15) PSDRV_WriteSpool(physDev, "\n", 1);
 244         }
 245         PSDRV_WriteSpool(physDev, "00>\n", 4); /* add an extra byte for old PostScript rips */
 246     }
 247
 248     /* glyf_blocks is a 0 terminated list, holding the start offset of each block.  For simplicity
 249        glyf_blocks[0] is 0 */
 250     nb_blocks = 2;
 251     t42->glyf_blocks = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (nb_blocks + 1) * sizeof(DWORD));
 252     for(i = 0; i < GET_BE_WORD(t42->tables[t42->maxp_tab].data + 4); i++) {
 253         DWORD start, end, size;
 254         get_glyf_pos(t42, i, &start, &end);
 255         size = end - t42->glyf_blocks[nb_blocks-2];
 256         if(size > 0x2000 && t42->glyf_blocks[nb_blocks-1] % 4 == 0) {
 257             nb_blocks++;
 258             t42->glyf_blocks = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 259                                            t42->glyf_blocks, (nb_blocks + 1) * sizeof(DWORD));
 260         }
 261         t42->glyf_blocks[nb_blocks-1] = end;
 262     }
 263
 264     PSDRV_WriteSpool(physDev, "[ ", 2);
 265     for(i = 1; t42->glyf_blocks[i]; i++) {
 266         sprintf(buf,"%d ", t42->glyf_blocks[i] - t42->glyf_blocks[i-1] + 1);
 267         /* again add one byte for old PostScript rips */
 268         PSDRV_WriteSpool(physDev, buf, strlen(buf));
 269         if(i % 8 == 0)
 270             PSDRV_WriteSpool(physDev, "\n", 1);
 271     }
 272     PSDRV_WriteSpool(physDev, storage, sizeof(storage) - 1);
 273     sprintf(buf, end, loca_off, glyf_off);
 274     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 275     HeapFree(GetProcessHeap(), 0, buf);
 276     return t42;
 277 }
 278
 279
 280
 281
 282 BOOL T42_download_glyph(PSDRV_PDEVICE *physDev, DOWNLOAD *pdl, DWORD index,
 283                         char *glyph_name)
 284 {
 285     DWORD start, end, i;
 286     char *buf;
 287     TYPE42 *t42;
 288     WORD awidth;
 289     short lsb;
 290
 291     const char glyph_def[] =
 292       "/%s findfont exch 1 index\n"
 293       "havetype42gdir\n"
 294       "{/GlyphDirectory get begin %d exch def end}\n"
 295       "{/sfnts get 4 index get 3 index 2 index putinterval pop}\n"
 296       "ifelse\n"
 297       "/CharStrings get\n"
 298       "begin\n"
 299       " /%s %d def\n"
 300       "end\n"
 301       "pop pop\n";
 302
 303     TRACE("%d %s\n", index, glyph_name);
 304     assert(pdl->type == Type42);
 305     t42 = pdl->typeinfo.Type42;
 306
 307     if(index < t42->glyph_sent_size) {
 308         if(t42->glyph_sent[index])
 309             return TRUE;
 310     } else {
 311         t42->glyph_sent_size = (index / GLYPH_SENT_INC + 1) * GLYPH_SENT_INC;
 312         t42->glyph_sent = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 313                                       t42->glyph_sent,
 314                                       t42->glyph_sent_size * sizeof(*(t42->glyph_sent)));
 315     }
 316
 317     buf = HeapAlloc(GetProcessHeap(), 0, sizeof(glyph_def) +
 318                     strlen(pdl->ps_name) + 100);
 319
 320     if(!get_glyf_pos(t42, index, &start, &end)) return FALSE;
 321     TRACE("start = %x end = %x\n", start, end);
 322
 323     awidth = GET_BE_WORD(t42->tables[t42->hmtx_tab].data + index * 4);
 324     lsb = GET_BE_WORD(t42->tables[t42->hmtx_tab].data + index * 4 + 2);
 325
 326     if(GET_BE_WORD(t42->tables[t42->glyf_tab].data + start) == 0xffff) {
 327       /* Composite glyph */
 328         BYTE *sg_start = t42->tables[t42->glyf_tab].data + start + 10;
 329         DWORD sg_flags, sg_index;
 330         char sg_name[MAX_G_NAME + 1];
 331
 332         do {
 333             sg_flags = GET_BE_WORD(sg_start);
 334             sg_index = GET_BE_WORD(sg_start + 2);
 335
 336             TRACE("Sending subglyph %04x for glyph %04x\n", sg_index, index);
 337             get_glyph_name(physDev->hdc, sg_index, sg_name);
 338             T42_download_glyph(physDev, pdl, sg_index, sg_name);
 339             sg_start += 4;
 340             if(sg_flags & ARG_1_AND_2_ARE_WORDS)
 341                 sg_start += 4;
 342             else
 343                 sg_start += 2;
 344             if(sg_flags & WE_HAVE_A_SCALE)
 345                 sg_start += 2;
 346             else if(sg_flags & WE_HAVE_AN_X_AND_Y_SCALE)
 347                 sg_start += 4;
 348             else if(sg_flags & WE_HAVE_A_TWO_BY_TWO)
 349                 sg_start += 8;
 350         } while(sg_flags & MORE_COMPONENTS);
 351     }
 352
 353     for(i = 1; t42->glyf_blocks[i]; i++)
 354         if(start < t42->glyf_blocks[i]) break;
 355     /* we don't have a string for the gdir and glyf tables, but we do have a
 356        string for the TT header.  So the offset we need is tables - 2 */
 357     sprintf(buf, "%d %d\n", t42->num_of_written_tables - 2 + i, start - t42->glyf_blocks[i-1]);
 358     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 359
 360     PSDRV_WriteSpool(physDev, "<", 1);
 361     for(i = start; i < end; i++) {
 362         sprintf(buf, "%02x", *(t42->tables[t42->glyf_tab].data + i));
 363         PSDRV_WriteSpool(physDev, buf, strlen(buf));
 364         if((i - start) % 16 == 15)
 365             PSDRV_WriteSpool(physDev, "\n", 1);
 366     }
 367     PSDRV_WriteSpool(physDev, ">\n", 2);
 368     sprintf(buf, glyph_def, pdl->ps_name, index, glyph_name, index);
 369     PSDRV_WriteSpool(physDev, buf, strlen(buf));
 370
 371     t42->glyph_sent[index] = TRUE;
 372     HeapFree(GetProcessHeap(), 0, buf);
 373     return TRUE;
 374 }
 375
 376 void T42_free(TYPE42 *t42)
 377 {
 378     OTTable *table;
 379     for(table = t42->tables; table->MS_tag; table++)
 380         HeapFree(GetProcessHeap(), 0, table->data);
 381     HeapFree(GetProcessHeap(), 0, t42->glyph_sent);
 382     HeapFree(GetProcessHeap(), 0, t42->glyf_blocks);
 383     HeapFree(GetProcessHeap(), 0, t42);
 384     return;
 385 }