source/texk/web2c/luatexdir/font/writettf.h

   1 /* writettf.h
   2
   3    Copyright 1996-2006 Han The Thanh <thanh@pdftex.org>
   4    Copyright 2006-2008 Taco Hoekwater <taco@luatex.org>
   5
   6    This file is part of LuaTeX.
   7
   8    LuaTeX is free software; you can redistribute it and/or modify it under
   9    the terms of the GNU General Public License as published by the Free
  10    Software Foundation; either version 2 of the License, or (at your
  11    option) any later version.
  12
  13    LuaTeX is distributed in the hope that it will be useful, but WITHOUT
  14    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  16    License for more details.
  17
  18    You should have received a copy of the GNU General Public License along
  19    with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
  20
  21
  22 #ifndef WRITETTF_H
  23 #  define WRITETTF_H 1
  24 typedef signed char TTF_CHAR;
  25 typedef unsigned char TTF_BYTE;
  26 typedef signed short TTF_SHORT;
  27 typedef unsigned short TTF_USHORT;
  28 typedef signed long TTF_LONG;
  29 typedef unsigned long TTF_ULONG;
  30 typedef unsigned long TTF_FIXED;
  31 typedef unsigned short TTF_FUNIT;
  32 typedef signed short TTF_FWORD;
  33 typedef unsigned short TTF_UFWORD;
  34 typedef unsigned short TTF_F2DOT14;
  35
  36 #  define TTF_CHAR_SIZE    1
  37 #  define TTF_BYTE_SIZE    1
  38 #  define TTF_SHORT_SIZE   2
  39 #  define TTF_USHORT_SIZE  2
  40 #  define TTF_LONG_SIZE    4
  41 #  define TTF_ULONG_SIZE   4
  42 #  define TTF_FIXED_SIZE   4
  43 #  define TTF_FWORD_SIZE   2
  44 #  define TTF_UFWORD_SIZE  2
  45 #  define TTF_F2DOT14_SIZE 2
  46
  47 /*
  48  * TrueType outline data.
  49  */
  50 #  define ARG_1_AND_2_ARE_WORDS       (1<<0)
  51 #  define ARGS_ARE_XY_VALUES          (1<<1)
  52 #  define ROUND_XY_TO_GRID            (1<<2)
  53 #  define WE_HAVE_A_SCALE             (1<<3)
  54 #  define RESERVED                    (1<<4)
  55 #  define MORE_COMPONENTS             (1<<5)
  56 #  define WE_HAVE_AN_X_AND_Y_SCALE    (1<<6)
  57 #  define WE_HAVE_A_TWO_BY_TWO        (1<<7)
  58 #  define WE_HAVE_INSTRUCTIONS        (1<<8)
  59 #  define USE_MY_METRICS              (1<<9)
  60
  61 #  define get_type(t)     ((t)ttf_getnum(t##_SIZE))
  62 #  define ttf_skip(n)     ttf_getnum(n)
  63
  64 #  define get_byte()      get_type(TTF_BYTE)
  65 #  define get_char()      get_type(TTF_CHAR)
  66 #  define get_ushort()    get_type(TTF_USHORT)
  67 #  define get_short()     get_type(TTF_SHORT)
  68 #  define get_ulong()     get_type(TTF_ULONG)
  69 #  define get_long()      get_type(TTF_LONG)
  70 #  define get_fixed()     get_type(TTF_FIXED)
  71 #  define get_funit()     get_type(TTF_FUNIT)
  72 #  define get_fword()     get_type(TTF_FWORD)
  73 #  define get_ufword()    get_type(TTF_UFWORD)
  74 #  define get_f2dot14()   get_type(TTF_F2DOT14)
  75
  76 #  define put_num(t,n)    ((t)ttf_putnum(pdf,t##_SIZE, n))
  77
  78 #  define put_char(n)     (void)put_num(TTF_CHAR, n)
  79 #  define put_byte(n)     (void)put_num(TTF_BYTE, n)
  80 #  define put_short(n)    put_num(TTF_SHORT, n)
  81 #  define put_ushort(n)   put_num(TTF_USHORT, n)
  82 #  define put_long(n)     put_num(TTF_LONG, n)
  83 #  define put_ulong(n)    (void)put_num(TTF_ULONG, n)
  84 #  define put_fixed(n)    (void)put_num(TTF_FIXED, n)
  85 #  define put_funit(n)    put_num(TTF_FUNIT, n)
  86 #  define put_fword(n)    put_num(TTF_FWORD, n)
  87 #  define put_ufword(n)   (void)put_num(TTF_UFWORD, n)
  88 #  define put_f2dot14(n)  put_num(TTF_F2DOT14, n)
  89
  90 #  define copy_byte()     put_byte(get_byte())
  91 #  define copy_char()     put_char(get_char())
  92 #  define copy_ushort()   put_ushort(get_ushort())
  93 #  define copy_short()    put_short(get_short())
  94 #  define copy_ulong()    put_ulong(get_ulong())
  95 #  define copy_long()     put_long(get_long())
  96 #  define copy_fixed()    put_fixed(get_fixed())
  97 #  define copy_funit()    put_funit(get_funit())
  98 #  define copy_fword()    put_fword(get_fword())
  99 #  define copy_ufword()   put_ufword(get_ufword())
 100 #  define copy_f2dot14()  put_f2dot14(get_f2dot14())
 101
 102 #  define is_unicode_mapping(e) \
 103     (e->platform_id == 0 || (e->platform_id == 3 || e->encoding_id == 1))
 104
 105
 106 #  define NMACGLYPHS      258
 107 #  define TABDIR_OFF      12
 108 #  define ENC_BUF_SIZE    1024
 109
 110 #  define GLYPH_PREFIX_INDEX    "index"
 111 #  define GLYPH_PREFIX_UNICODE  "uni"
 112
 113 typedef struct {
 114     char tag[4];
 115     TTF_ULONG checksum;
 116     TTF_ULONG offset;
 117     TTF_ULONG length;
 118 } dirtab_entry;
 119
 120 typedef struct {
 121     TTF_USHORT platform_id;
 122     TTF_USHORT encoding_id;
 123     TTF_ULONG offset;
 124     TTF_USHORT format;
 125 } cmap_entry;
 126
 127 typedef struct {
 128     TTF_USHORT endCode;
 129     TTF_USHORT startCode;
 130     TTF_USHORT idDelta;
 131     TTF_USHORT idRangeOffset;
 132 } seg_entry;
 133
 134 typedef struct {
 135     TTF_LONG offset;
 136     TTF_LONG newoffset;
 137     TTF_UFWORD advWidth;
 138     TTF_FWORD lsb;
 139     const char *name;           /* name of glyph */
 140     TTF_SHORT newindex;         /* new index of glyph in output file */
 141     TTF_USHORT name_index;      /* index of name as read from font file */
 142 } glyph_entry;
 143
 144 /* some functions and variables are used by writetype0.c */
 145
 146 extern fd_entry *fd_cur;        /* pointer to the current font descriptor */
 147 extern unsigned char *ttf_buffer;
 148 extern int ttf_size;
 149 extern int ttf_curbyte;
 150 extern glyph_entry *glyph_tab;
 151 extern dirtab_entry *dir_tab;
 152 extern dirtab_entry *ttf_name_lookup(const char *s, boolean required);
 153 extern dirtab_entry *ttf_seek_tab(const char *name, TTF_LONG offset);
 154
 155 extern void otc_read_tabdir(int index);
 156 extern void ttf_read_tabdir(void);
 157 extern void ttf_read_head(void);
 158 extern void ttf_read_hhea(void);
 159 extern void ttf_read_pclt(void);
 160 extern void ttf_read_post(void);
 161
 162 extern FILE *ttf_file;
 163
 164 #  define ttf_open(a)      \
 165     (ttf_file = fopen((char *) (a), FOPEN_RBIN_MODE))
 166 #  define otf_open(a)      \
 167     (ttf_file = fopen((char *) (a), FOPEN_RBIN_MODE))
 168 #  define ttf_read_file()  \
 169     readbinfile(ttf_file,&ttf_buffer,&ttf_size)
 170 #  define ttf_close()      xfclose(ttf_file,cur_file_name)
 171 #  define ttf_getchar()    ttf_buffer[ttf_curbyte++]
 172 #  define ttf_eof()        (ttf_curbyte>ttf_size)
 173
 174 extern long ttf_putnum(PDF pdf, int s, long n);
 175 extern long ttf_getnum(int s);
 176 #endif