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// -*- C++ -*-
/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
Written by James Clark (jjc@jclark.com)
This file is part of groff.
groff 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, or (at your option) any later
version.
groff 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 General Public License
for more details.
You should have received a copy of the GNU General Public License along
with groff; see the file COPYING. If not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
typedef void (*FONT_COMMAND_HANDLER)(const char *, const char *,
const char *, int);
struct font_kern_list;
struct font_char_metric;
struct font_widths_cache;
class font {
public:
enum {
LIG_ff = 1,
LIG_fi = 2,
LIG_fl = 4,
LIG_ffi = 8,
LIG_ffl = 16
};
virtual ~font();
int contains(int index);
int is_special();
int get_width(int index, int point_size);
int get_height(int index, int point_size);
int get_depth(int index, int point_size);
int get_space_width(int point_size);
int get_character_type(int index);
int get_kern(int index1, int index2, int point_size);
int get_skew(int index, int point_size, int slant);
int has_ligature(int);
int get_italic_correction(int index, int point_size);
int get_left_italic_correction(int index, int point_size);
int get_subscript_correction(int index, int point_size);
int get_code(int i);
const char *get_name();
const char *get_internal_name();
static font *load_font(const char *, int *not_found = 0);
static void command_line_font_dir(const char *path);
static FILE *open_file(const char *name, char **pathp);
static int load_desc();
static int name_to_index(const char *);
static int number_to_index(int);
static FONT_COMMAND_HANDLER
set_unknown_desc_command_handler(FONT_COMMAND_HANDLER);
static int res;
static int hor;
static int vert;
static int unitwidth;
static int paperwidth;
static int paperlength;
static int biggestfont;
static int spare2;
static int sizescale;
static int tcommand;
static const char **font_name_table;
static const char **style_table;
static const char *family;
static int *sizes;
private:
unsigned ligatures;
font_kern_list **kern_hash_table;
int space_width;
short *ch_index;
int nindices;
font_char_metric *ch;
int ch_used;
int ch_size;
int special;
char *name;
char *internalname;
double slant;
font_widths_cache *widths_cache;
static FONT_COMMAND_HANDLER unknown_desc_command_handler;
enum { KERN_HASH_TABLE_SIZE = 503 };
void add_entry(int index, const font_char_metric &);
void copy_entry(int new_index, int old_index);
void add_kern(int index1, int index2, int amount);
static int hash_kern(int i1, int i2);
void alloc_ch_index(int);
void extend_ch();
void compact();
static int scale(int w, int pointsize);
virtual void handle_unknown_font_command(const char *command,
const char *arg,
const char *file, int lineno);
protected:
font(const char *);
int load(int *not_found = 0);
};
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