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