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

   1 /* luatexfont.h --- General font definitions
   2
   3    Copyright 2008-2013 Taco Hoekwater <taco@luatex.org>
   4
   5    This file is part of LuaTeX.
   6
   7    LuaTeX is free software; you can redistribute it and/or modify it under
   8    the terms of the GNU General Public License as published by the Free
   9    Software Foundation; either version 2 of the License, or (at your
  10    option) any later version.
  11
  12    LuaTeX is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License along
  18    with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
  19
  20
  21 #ifndef LUATEXFONT_H
  22 #  define LUATEXFONT_H
  23
  24 #  include "ptexlib.h"
  25 #  ifndef pdfTeX
  26 #    define pdfTeX
  27 #    include "sfnt.h"           /* which wants that pdfTeX is defined */
  28 #    undef pdfTeX
  29 #  else
  30 #    include "sfnt.h"
  31 #  endif
  32
  33 /**********************************************************************/
  34
  35 #  define ASCENT_CODE       0
  36 #  define CAPHEIGHT_CODE    1
  37 #  define DESCENT_CODE      2
  38 #  define ITALIC_ANGLE_CODE 3
  39 #  define STEMV_CODE        4
  40 #  define XHEIGHT_CODE      5
  41 #  define FONTBBOX1_CODE    6
  42 #  define FONTBBOX2_CODE    7
  43 #  define FONTBBOX3_CODE    8
  44 #  define FONTBBOX4_CODE    9
  45 #  define FONTNAME_CODE     10
  46 #  define GEN_KEY_NUM       (XHEIGHT_CODE + 1)
  47 #  define MAX_KEY_CODE      (FONTBBOX1_CODE + 1)
  48 #  define INT_KEYS_NUM      (FONTBBOX4_CODE + 1)
  49 #  define FONT_KEYS_NUM     (FONTNAME_CODE + 1)
  50
  51 #  define FD_FLAGS_NOT_SET_IN_MAPLINE -1
  52 #  define FD_FLAGS_DEFAULT_EMBED  4     /* a symbol font */
  53 #  define FD_FLAGS_DEFAULT_NON_EMBED 0x22
  54                                         /* a nonsymbolic serif font */
  55
  56 /**********************************************************************/
  57
  58 typedef struct {
  59     const char *pdfname;
  60     const char *t1name;
  61     boolean valid;
  62 } key_entry;
  63
  64 extern const key_entry font_key[FONT_KEYS_NUM];
  65
  66 typedef struct _subfont_entry {
  67     char *infix;                /* infix for this subfont, eg "01" */
  68     long charcodes[256];        /* the mapping for this subfont as read from sfd */
  69     struct _subfont_entry *next;
  70 } subfont_entry;
  71
  72 #  include "mapfile.h"
  73
  74 typedef struct {
  75     char *name;                 /* sfd name, eg "Unicode" */
  76     subfont_entry *subfont;     /* linked list of subfonts */
  77 } sfd_entry;
  78
  79 typedef struct {
  80     int val;                    /* value */
  81     boolean set;                /* true if parameter has been set */
  82 } intparm;
  83
  84 typedef struct {
  85     int fe_objnum;              /* object number */
  86     char *name;                 /* encoding file name */
  87     char **glyph_names;         /* array of glyph names */
  88     struct avl_table *tx_tree;  /* tree of encoding positions marked as used by TeX */
  89 } fe_entry;
  90
  91 typedef struct fd_entry_ {
  92     int fd_objnum;              /* object number of the font descriptor object */
  93     char *fontname;             /* /FontName (without subset tag) */
  94     char *subset_tag;           /* 6-character subset tag */
  95     boolean ff_found;
  96     int ff_objnum;              /* object number of the font program stream */
  97     boolean all_glyphs;         /* embed all glyphs? */
  98     boolean write_ttf_glyph_names;
  99     intparm font_dim[FONT_KEYS_NUM];
 100     fe_entry *fe;               /* pointer to encoding structure */
 101     char **builtin_glyph_names; /* builtin encoding as read from the Type1 font file */
 102     fm_entry *fm;               /* pointer to font map structure */
 103     struct avl_table *tx_tree;  /* tree of non-reencoded TeX characters marked as used */
 104     struct avl_table *gl_tree;  /* tree of all marked glyphs */
 105 } fd_entry;
 106
 107 typedef struct fo_entry_ {
 108     int fo_objnum;              /* object number of the font dictionary */
 109     internal_font_number tex_font;      /* needed only for \pdffontattr{} */
 110     fm_entry *fm;               /* pointer to font map structure for this font dictionary */
 111     fd_entry *fd;               /* pointer to /FontDescriptor object structure */
 112     fe_entry *fe;               /* pointer to encoding structure */
 113     int cw_objnum;              /* object number of the font program object */
 114     int first_char;             /* first character used in this font */
 115     int last_char;              /* last character used in this font */
 116     struct avl_table *tx_tree;  /* tree of non-reencoded TeX characters marked as used */
 117     int tounicode_objnum;       /* object number of ToUnicode */
 118 } fo_entry;
 119
 120 typedef struct {
 121     char *name;                 /* glyph name */
 122     long code;                  /* -1 = undefined; -2 = multiple codes, stored
 123                                    as string in unicode_seq; otherwise unicode value */
 124     char *unicode_seq;          /* multiple unicode sequence */
 125 } glyph_unicode_entry;
 126
 127 typedef struct glw_entry_ {     /* subset glyphs for inclusion in CID-based fonts */
 128     unsigned int id;            /* glyph CID */
 129     signed int wd;              /* glyph width in 1/1000 em parts */
 130 } glw_entry;
 131
 132 typedef struct {
 133     int charcode, cwidth, cheight, xoff, yoff, xescape, rastersize;
 134     halfword *raster;
 135 } chardesc;
 136
 137 /**********************************************************************/
 138
 139 #  include "texfont.h"
 140
 141 /* tounicode.c */
 142 int write_cid_tounicode(PDF, fo_entry *, internal_font_number);
 143 void glyph_unicode_free(void);
 144 void def_tounicode(str_number, str_number);
 145 int write_tounicode(PDF, char **, char *);
 146
 147 /* vfpacket.c */
 148 void replace_packet_fonts(internal_font_number f, int *old_fontid,
 149                           int *new_fontid, int count);
 150 int *packet_local_fonts(internal_font_number f, int *num);
 151
 152 int packet_cur_s;               /* current |do_vf_packet()| recursion level */
 153 int packet_stack_ptr;           /* pointer into |packet_stack| */
 154 vf_struct *new_vfstruct(void);
 155
 156 /* writecff.c */
 157 void writetype1w(PDF pdf, fd_entry * fd);
 158
 159 /* writetype0.c */
 160 void writetype0(PDF pdf, fd_entry * fd);
 161
 162 /* writefont.c */
 163 void do_pdf_font(PDF, internal_font_number);
 164 fd_entry *lookup_fd_entry(char *);
 165 fd_entry *new_fd_entry(void);
 166 void write_fontstuff(PDF);
 167 void register_fd_entry(fd_entry * fd);
 168
 169 /* writet1.c */
 170 boolean t1_subset(char *, char *, unsigned char *);
 171 char **load_enc_file(char *);
 172 void writet1(PDF, fd_entry *);
 173 void t1_free(void);
 174 extern int t1_length1, t1_length2, t1_length3;
 175
 176 /* writetype2.c */
 177 boolean writetype2(PDF, fd_entry *);
 178 extern unsigned long cidtogid_obj;
 179 pdf_obj *pdf_new_stream(void);
 180 void pdf_add_stream(pdf_obj * stream, unsigned char *buf, long len);
 181 void pdf_release_obj(pdf_obj * stream);
 182 unsigned long ttc_read_offset(sfnt * sfont, int ttc_idx, fd_entry *fd);
 183
 184 /* subfont.c */
 185 void sfd_free(void);
 186 boolean handle_subfont_fm(fm_entry *, int);
 187
 188 /* writeenc.c */
 189 fe_entry *get_fe_entry(char *);
 190 void enc_free(void);
 191 void write_fontencodings(PDF pdf);
 192
 193 /* writettf.c */
 194 void writettf(PDF, fd_entry *);
 195 void writeotf(PDF, fd_entry *);
 196 void ttf_free(void);
 197 extern int ttf_length;
 198
 199 /* pkin.c */
 200 int readchar(boolean, chardesc *);
 201
 202 /* macnames.c */
 203 extern char notdef[];
 204
 205 /* vfovf.c */
 206 internal_font_number letter_space_font(internal_font_number f, int e, boolean nolig);
 207 void pdf_check_vf(internal_font_number f);
 208 internal_font_number copy_font_info(internal_font_number f);
 209
 210 /* writet3.c */
 211 extern FILE *t3_file;
 212 void writet3(PDF, internal_font_number);
 213
 214 extern unsigned char *t3_buffer;
 215 extern int t3_size;
 216 extern int t3_curbyte;
 217
 218 #  define t3_read_file() readbinfile(t3_file, &t3_buffer, &t3_size)
 219 #  define t3_close()     xfclose(t3_file, cur_file_name)
 220 #  define t3_getchar()   t3_buffer[t3_curbyte++]
 221 #  define t3_eof()       (t3_curbyte>t3_size)
 222
 223 #  define t3_prefix(s)   (!strncmp(t3_line_array, s, strlen(s)))
 224 #  define t3_putchar(c)  pdfout(c)
 225
 226 #endif                          /* LUATEXFONT_H */