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/* texfont.h Main font API implementation for the pascal parts
Copyright 2006-2008 Taco Hoekwater <taco@luatex.org>
This file is part of LuaTeX.
LuaTeX is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
LuaTeX is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU General Public License along
with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
/* $Id: texfont.h 2057 2009-03-19 15:45:47Z taco $ */
/* Here we have the interface to LuaTeX's font system, as seen from the
main pascal program. There is a companion list in luatex.defines to
keep web2c happy */
/* this file is read at the end of ptexlib.h, which is called for at
the end of luatexcoerce.h, as well as from the C sources
*/
#ifndef TEXFONT_H
# define TEXFONT_H 1
# include "luatexdir/managed-sa.h"
# define pointer halfword
typedef struct liginfo {
integer adj;
integer lig;
char type;
} liginfo;
typedef struct kerninfo {
integer adj;
scaled sc;
} kerninfo;
typedef struct extinfo {
struct extinfo *next;
int glyph;
int start_overlap;
int end_overlap;
int advance;
int extender;
} extinfo;
typedef struct charinfo {
char *name; /* postscript character name */
liginfo *ligatures; /* ligature items */
kerninfo *kerns; /* kern items */
real_eight_bits *packets; /* virtual commands. */
unsigned short index; /* CID index */
integer remainder; /* spare value for odd items, could be union-ed with extensible */
scaled width; /* width */
scaled height; /* height */
scaled depth; /* depth */
scaled italic; /* italic correction */
scaled top_accent; /* top accent alignment */
scaled bot_accent; /* bot accent alignment */
integer ef; /* font expansion factor */
integer lp; /* left protruding factor */
integer rp; /* right protruding factor */
char tag; /* list / ext taginfo */
char used; /* char is typeset ? */
char *tounicode; /* unicode equivalent */
extinfo *hor_variants; /* horizontal variants */
extinfo *vert_variants; /* vertical variants */
} charinfo;
/* this is for speed reasons, it is called from the web source
when more than two of the traditional four char values are needed
at the same time. the structure |charinfo_short| is defined in
web */
# ifndef luaTeX
typedef struct charinfo_short {
scaled ci_wd; /* width */
scaled ci_ht; /* height */
scaled ci_dp; /* depth */
} charinfo_short;
# endif
# define EXT_NORMAL 0
# define EXT_REPEAT 1
extern extinfo *get_charinfo_vert_variants(charinfo * ci);
extern extinfo *get_charinfo_hor_variants(charinfo * ci);
extern void set_charinfo_hor_variants(charinfo * ci, extinfo * ext);
extern void set_charinfo_vert_variants(charinfo * ci, extinfo * ext);
extern void add_charinfo_vert_variant(charinfo * ci, extinfo * ext);
extern void add_charinfo_hor_variant(charinfo * ci, extinfo * ext);
extern extinfo *copy_variants(extinfo * o);
extern extinfo *new_variant(int glyph, int startconnect, int endconnect,
int advance, int repeater);
extern charinfo_short char_info_short(internal_font_number f, integer c);
typedef struct texfont {
integer _font_size;
integer _font_dsize;
char *_font_name;
char *_font_area;
char *_font_filename;
char *_font_fullname;
char *_font_encodingname;
char *_font_cidregistry;
char *_font_cidordering;
integer _font_cidversion;
integer _font_cidsupplement;
integer _font_ec;
unsigned _font_checksum; /* internal information */
char _font_used; /* internal information */
char _font_touched; /* internal information */
integer _font_cache_id; /* internal information */
char _font_encodingbytes; /* 1 or 2 bytes */
integer _font_slant; /* a slant in ppt */
integer _font_extend; /* an extension in ppt, or 0 */
char _font_tounicode; /* 1 if info is present */
fm_entry_ptr _font_map;
integer _font_type;
integer _font_format;
integer _font_embedding;
integer _font_bc;
integer _hyphen_char;
integer _skew_char;
integer _font_natural_dir;
charinfo *_left_boundary;
charinfo *_right_boundary;
integer _font_params;
scaled *_param_base;
integer _font_math_params;
scaled *_math_param_base;
sa_tree characters;
integer charinfo_count;
integer charinfo_size;
charinfo *charinfo;
int *charinfo_cache;
integer ligatures_disabled;
integer _pdf_font_num; /* maps to a PDF resource ID */
scaled _pdf_font_size; /* maps to a PDF font size */
internal_font_number _pdf_font_blink; /* link to base font for expanded fonts */
internal_font_number _pdf_font_elink; /* link to expanded fonts for base font */
integer _pdf_font_expand_ratio; /* expansion ratio of a particular font */
internal_font_number _pdf_font_shrink; /* font at limit of shrinking */
internal_font_number _pdf_font_stretch; /* font at limit of stretching */
integer _pdf_font_step; /* amount of one step of expansion */
boolean _pdf_font_auto_expand; /* this font is auto-expanded? */
str_number _pdf_font_attr; /* pointer to additional attributes */
} texfont;
typedef enum {
unknown_font_type = 0, /* new font (has not been used yet) */
virtual_font_type, /* virtual font */
real_font_type, /* real font */
} font_types;
typedef enum {
unknown_format = 0,
type1_format,
type3_format,
truetype_format,
opentype_format,
} font_formats;
typedef enum {
unknown_embedding = 0,
no_embedding,
subset_embedding,
full_embedding,
} font_embedding_option;
extern char *font_type_strings[];
extern char *font_format_strings[];
extern char *font_embedding_strings[];
# define font_checksum(a) font_tables[a]->_font_checksum
# define set_font_checksum(a,b) font_checksum(a) = b
# define font_check_0(a) ((font_tables[a]->_font_checksum&0xFF000000)>>24)
# define font_check_1(a) ((font_tables[a]->_font_checksum&0x00FF0000)>>16)
# define font_check_2(a) ((font_tables[a]->_font_checksum&0x0000FF00)>>8)
# define font_check_3(a) (font_tables[a]->_font_checksum&0x000000FF)
# define font_size(a) font_tables[a]->_font_size
# define set_font_size(a,b) font_size(a) = b
# define font_dsize(a) font_tables[a]->_font_dsize
# define set_font_dsize(a,b) font_dsize(a) = b
# define font_name(a) font_tables[a]->_font_name
# define get_font_name(a) (unsigned char *)font_name(a)
# define set_font_name(f,b) font_name(f) = b
# define tex_font_name(a) maketexstring(font_name(a))
boolean cmp_font_name(integer, strnumber);
# define font_area(a) font_tables[a]->_font_area
# define get_font_area(a) (unsigned char *)font_area(a)
# define set_font_area(f,b) font_area(f) = b
# define tex_font_area(a) maketexstring(font_area(a))
boolean cmp_font_area(integer, strnumber);
# define font_reassign(a,b) { if (a!=NULL) free(a); a = b; }
# define font_filename(a) font_tables[a]->_font_filename
# define set_font_filename(f,b) font_reassign(font_filename(f),b)
# define font_fullname(a) font_tables[a]->_font_fullname
# define set_font_fullname(f,b) font_reassign(font_fullname(f),b)
# define font_encodingname(a) font_tables[a]->_font_encodingname
# define set_font_encodingname(f,b) font_reassign(font_encodingname(f),b)
boolean font_shareable(internal_font_number, internal_font_number);
# define cmp_font_filename(a,b) (!(font_filename(a)!=NULL || font_filename(b)!=NULL || \
strcmp(font_filename(a),font_filename(b))))
# define cmp_font_fullname(a,b) (!(font_fullname(a)!=NULL || font_fullname(b)!=NULL || \
strcmp(font_fullname(a),font_fullname(b))))
# define cmp_font_encodingname(a,b) (!(font_encoding(a)!=NULL || font_encodingname(b)!=NULL || \
strcmp(font_encodingname(a),font_encodingname(b))))
# define font_bc(a) font_tables[a]->_font_bc
# define set_font_bc(f,b) font_bc(f) = b
# define font_ec(a) font_tables[a]->_font_ec
# define set_font_ec(f,b) font_ec(f) = b
# define font_used(a) (font_tables[a]!=NULL && font_tables[a]->_font_used)
# define set_font_used(a,b) font_tables[a]->_font_used = b
# define font_touched(a) font_tables[a]->_font_touched
# define set_font_touched(a,b) font_touched(a) = b
# define font_type(a) font_tables[a]->_font_type
# define set_font_type(a,b) { /* fprintf(stdout,"set font type of %s to %i: %s\n",font_name(a),b,__FILE__); */ \
font_type(a) = b; }
# define font_format(a) font_tables[a]->_font_format
# define font_format_name(a) font_format_strings[font_tables[a]->_font_format]
# define set_font_format(a,b) font_format(a) = b
# define font_embedding(a) font_tables[a]->_font_embedding
# define set_font_embedding(a,b) font_embedding(a) = b
# define font_cidversion(a) font_tables[a]->_font_cidversion
# define set_font_cidversion(a,b) font_cidversion(a) = b
# define font_cidsupplement(a) font_tables[a]->_font_cidsupplement
# define set_font_cidsupplement(a,b) font_cidsupplement(a) = b
# define font_cidordering(a) font_tables[a]->_font_cidordering
# define set_font_cidordering(f,b) font_reassign(font_cidordering(f),b)
# define font_cidregistry(a) font_tables[a]->_font_cidregistry
# define set_font_cidregistry(f,b) font_reassign(font_cidregistry(f),b)
# define font_map(a) font_tables[a]->_font_map
# define set_font_map(a,b) font_map(a) = b
# define font_cache_id(a) font_tables[a]->_font_cache_id
# define set_font_cache_id(a,b) font_cache_id(a) = b
# define font_encodingbytes(a) font_tables[a]->_font_encodingbytes
# define set_font_encodingbytes(a,b) font_encodingbytes(a) = b
# define font_slant(a) font_tables[a]->_font_slant
# define set_font_slant(a,b) font_slant(a) = b
# define font_extend(a) font_tables[a]->_font_extend
# define set_font_extend(a,b) font_extend(a) = b
# define font_tounicode(a) font_tables[a]->_font_tounicode
# define set_font_tounicode(a,b) font_tounicode(a) = b
# define hyphen_char(a) font_tables[a]->_hyphen_char
# define set_hyphen_char(a,b) hyphen_char(a) = b
# define skew_char(a) font_tables[a]->_skew_char
# define set_skew_char(a,b) skew_char(a) = b
# define font_natural_dir(a) font_tables[a]->_font_natural_dir
# define set_font_natural_dir(a,b) font_natural_dir(a) = b
# define pdf_font_size(a) font_tables[a]->_pdf_font_size
# define set_pdf_font_size(a,b) pdf_font_size(a) = b
# define pdf_font_num(a) font_tables[a]->_pdf_font_num
# define set_pdf_font_num(a,b) pdf_font_num(a) = b
# define pdf_font_blink(a) font_tables[a]->_pdf_font_blink
# define set_pdf_font_blink(a,b) pdf_font_blink(a) = b
# define pdf_font_elink(a) font_tables[a]->_pdf_font_elink
# define set_pdf_font_elink(a,b) pdf_font_elink(a) = b
# define pdf_font_expand_ratio(a) font_tables[a]->_pdf_font_expand_ratio
# define set_pdf_font_expand_ratio(a,b) pdf_font_expand_ratio(a) = b
# define pdf_font_shrink(a) font_tables[a]->_pdf_font_shrink
# define set_pdf_font_shrink(a,b) pdf_font_shrink(a) = b
# define pdf_font_stretch(a) font_tables[a]->_pdf_font_stretch
# define set_pdf_font_stretch(a,b) pdf_font_stretch(a) = b
# define pdf_font_step(a) font_tables[a]->_pdf_font_step
# define set_pdf_font_step(a,b) pdf_font_step(a) = b
# define pdf_font_auto_expand(a) font_tables[a]->_pdf_font_auto_expand
# define set_pdf_font_auto_expand(a,b) pdf_font_auto_expand(a) = b
# define pdf_font_attr(a) font_tables[a]->_pdf_font_attr
# define set_pdf_font_attr(a,b) pdf_font_attr(a) = b
# define left_boundarychar -1
# define right_boundarychar -2
# define non_boundarychar -3
# define left_boundary(a) font_tables[a]->_left_boundary
# define has_left_boundary(a) (left_boundary(a)!=NULL)
# define set_left_boundary(a,b) font_reassign(left_boundary(a),b)
# define right_boundary(a) font_tables[a]->_right_boundary
# define has_right_boundary(a) (right_boundary(a)!=NULL)
# define set_right_boundary(a,b) font_reassign(right_boundary(a),b)
# define font_bchar(a) (right_boundary(a)!=NULL ? right_boundarychar : non_boundarychar)
/* font parameters */
# define font_params(a) font_tables[a]->_font_params
# define param_base(a) font_tables[a]->_param_base
# define font_param(a,b) font_tables[a]->_param_base[b]
extern void set_font_params(internal_font_number f, int b);
# define set_font_param(f,n,b) \
{ if (font_params(f)<n) set_font_params(f,n); \
font_param(f,n) = b; }
# define font_math_params(a) font_tables[a]->_font_math_params
# define math_param_base(a) font_tables[a]->_math_param_base
# define font_math_param(a,b) font_tables[a]->_math_param_base[b]
extern void set_font_math_params(internal_font_number f, int b);
# define set_font_math_param(f,n,b) \
{ if (font_math_params(f)<n) set_font_math_params(f,n); \
font_math_param(f,n) = b; }
/* Font parameters are sometimes referred to as |slant(f)|, |space(f)|, etc.*/
typedef enum {
slant_code = 1,
space_code = 2,
space_stretch_code = 3,
space_shrink_code = 4,
x_height_code = 5,
quad_code = 6,
extra_space_code = 7
} font_parameter_codes;
# define slant(f) font_param(f,slant_code)
# define space(f) font_param(f,space_code)
# define space_stretch(f) font_param(f,space_stretch_code)
# define space_shrink(f) font_param(f,space_shrink_code)
# define x_height(f) font_param(f,x_height_code)
# define quad(f) font_param(f,quad_code)
# define extra_space(f) font_param(f,extra_space_code)
/* now for characters */
extern charinfo *get_charinfo(internal_font_number f, integer c);
extern integer char_exists(internal_font_number f, integer c);
extern charinfo *char_info(internal_font_number f, integer c);
extern void set_charinfo_width(charinfo * ci, scaled val);
extern void set_charinfo_height(charinfo * ci, scaled val);
extern void set_charinfo_depth(charinfo * ci, scaled val);
extern void set_charinfo_italic(charinfo * ci, scaled val);
extern void set_charinfo_top_accent(charinfo * ci, scaled val);
extern void set_charinfo_bot_accent(charinfo * ci, scaled val);
extern void set_charinfo_tag(charinfo * ci, scaled val);
extern void set_charinfo_remainder(charinfo * ci, scaled val);
extern void set_charinfo_used(charinfo * ci, scaled val);
extern void set_charinfo_index(charinfo * ci, scaled val);
extern void set_charinfo_name(charinfo * ci, char *val);
extern void set_charinfo_tounicode(charinfo * ci, char *val);
extern void set_charinfo_ligatures(charinfo * ci, liginfo * val);
extern void set_charinfo_kerns(charinfo * ci, kerninfo * val);
extern void set_charinfo_packets(charinfo * ci, real_eight_bits * val);
extern void set_charinfo_extensible(charinfo * ci, int a, int b, int c, int d);
extern void set_charinfo_ef(charinfo * ci, scaled val);
extern void set_charinfo_lp(charinfo * ci, scaled val);
extern void set_charinfo_rp(charinfo * ci, scaled val);
# define set_char_used(f,a,b) do { \
if (char_exists(f,a)) \
set_charinfo_used(char_info(f,a),b); \
} while (0)
extern scaled get_charinfo_width(charinfo * ci);
extern scaled get_charinfo_height(charinfo * ci);
extern scaled get_charinfo_depth(charinfo * ci);
extern scaled get_charinfo_italic(charinfo * ci);
extern scaled get_charinfo_top_accent(charinfo * ci);
extern scaled get_charinfo_bot_accent(charinfo * ci);
extern char get_charinfo_tag(charinfo * ci);
extern integer get_charinfo_remainder(charinfo * ci);
extern char get_charinfo_used(charinfo * ci);
extern integer get_charinfo_index(charinfo * ci);
extern char *get_charinfo_name(charinfo * ci);
extern char *get_charinfo_tounicode(charinfo * ci);
extern liginfo *get_charinfo_ligatures(charinfo * ci);
extern kerninfo *get_charinfo_kerns(charinfo * ci);
extern real_eight_bits *get_charinfo_packets(charinfo * ci);
extern integer get_charinfo_ef(charinfo * ci);
extern integer get_charinfo_rp(charinfo * ci);
extern integer get_charinfo_lp(charinfo * ci);
extern integer get_charinfo_extensible(charinfo * ci, int which);
extern integer ext_top(internal_font_number f, integer c);
extern integer ext_bot(internal_font_number f, integer c);
extern integer ext_rep(internal_font_number f, integer c);
extern integer ext_mid(internal_font_number f, integer c);
# define set_ligature_item(f,b,c,d) { f.type = b; f.adj = c; f.lig = d; }
# define set_kern_item(f,b,c) { f.adj = b; f.sc = c; }
/* character information */
# define non_char 65536 /* a code that can't match a real character */
# define non_address 0 /* a spurious |bchar_label| */
/* character kerns and ligatures */
# define end_kern 0x7FFFFF
/* otherchar value meaning "stop" */
# define ignored_kern 0x800000
/* otherchar value meaning "disabled" */
# define charinfo_kern(b,c) b->kerns[c]
# define kern_char(b) (b).adj
# define kern_kern(b) (b).sc
# define kern_end(b) ((b).adj == end_kern)
# define kern_disabled(b) ((b).adj > end_kern)
/* character ligatures */
# define end_ligature 0x7FFFFF /* otherchar value meaning "stop" */
# define ignored_ligature 0x800000 /* otherchar value meaning "disabled" */
# define charinfo_ligature(b,c) b->ligatures[c]
# define is_valid_ligature(a) ((a).type!=0)
# define lig_type(a) ((a).type>>1)
# define lig_char(a) (a).adj
# define lig_replacement(a) (a).lig
# define lig_end(a) (lig_char(a) == end_ligature)
# define lig_disabled(a) (lig_char(a) > end_ligature)
# define no_tag 0 /* vanilla character */
# define lig_tag 1 /* character has a ligature/kerning program */
# define list_tag 2 /* character has a successor in a charlist */
# define ext_tag 3 /* character is extensible */
extern scaled char_height(internal_font_number f, integer c);
extern scaled char_width(internal_font_number f, integer c);
extern scaled char_depth(internal_font_number f, integer c);
extern scaled char_italic(internal_font_number f, integer c);
extern scaled char_top_accent(internal_font_number f, integer c);
extern scaled char_bot_accent(internal_font_number f, integer c);
extern liginfo *char_ligatures(internal_font_number f, integer c);
extern kerninfo *char_kerns(internal_font_number f, integer c);
extern real_eight_bits *char_packets(internal_font_number f, integer c);
# define has_lig(f,b) (char_exists(f,b) &&( char_ligatures(f,b) != NULL))
# define has_kern(f,b) (char_exists(f,b) && (char_kerns(f,b) != NULL))
# define has_packet(f,b) (char_exists(f,b) && (char_packets(f,b) != NULL))
extern integer char_remainder(internal_font_number f, integer c);
extern char char_tag(internal_font_number f, integer c);
extern char char_used(internal_font_number f, integer c);
extern char *char_name(internal_font_number f, integer c);
extern integer char_index(internal_font_number f, integer c);
scaled raw_get_kern(internalfontnumber f, integer lc, integer rc);
scaled get_kern(internalfontnumber f, integer lc, integer rc);
liginfo get_ligature(internalfontnumber f, integer lc, integer rc);
# define EXT_TOP 0
# define EXT_BOT 1
# define EXT_MID 2
# define EXT_REP 3
extern texfont **font_tables;
integer new_font(void);
integer copy_font(integer id);
integer scale_font(integer id, integer atsize);
integer max_font_id(void);
void set_max_font_id(integer id);
integer new_font_id(void);
void create_null_font(void);
void delete_font(integer id);
boolean is_valid_font(integer id);
void dump_font(int font_number);
void undump_font(int font_number);
integer test_no_ligatures(internal_font_number f);
void set_no_ligatures(internal_font_number f);
extern integer get_tag_code(internal_font_number f, integer c);
extern integer get_lp_code(internal_font_number f, integer c);
extern integer get_rp_code(internal_font_number f, integer c);
extern integer get_ef_code(internal_font_number f, integer c);
extern void set_tag_code(internal_font_number f, integer c, integer i);
extern void set_lp_code(internal_font_number f, integer c, integer i);
extern void set_rp_code(internal_font_number f, integer c, integer i);
extern void set_ef_code(internal_font_number f, integer c, integer i);
int read_tfm_info(internal_font_number f, char *nom, char *aire, scaled s);
/* from dofont.c */
extern int read_font_info(pointer u, strnumber nom, scaled s, integer ndir);
extern int find_font_id(char *nom, char *aire, scaled s);
/* for and from vfpacket.c */
# define scan_special 3 /* look into special text */ /* this is a hack */
typedef enum { packet_char_code,
packet_font_code,
packet_pop_code,
packet_push_code,
packet_special_code,
packet_image_code,
packet_right_code,
packet_down_code,
packet_rule_code,
packet_node_code,
packet_nop_code,
packet_end_code
} packet_command_codes;
extern scaled sqxfw(scaled sq, integer fw);
extern void do_vf_packet(internal_font_number vf_f, integer c);
extern int vf_packet_bytes(charinfo * co);
#endif
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