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