freebsd-skq/contrib/groff/troff/node.h

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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. */
struct hyphen_list {
unsigned char hyphen;
unsigned char breakable;
unsigned char hyphenation_code;
hyphen_list *next;
hyphen_list(unsigned char code, hyphen_list *p = 0);
};
void hyphenate(hyphen_list *, unsigned);
enum hyphenation_type { HYPHEN_MIDDLE, HYPHEN_BOUNDARY, HYPHEN_INHIBIT };
class ascii_output_file;
struct breakpoint;
struct vertical_size;
struct charinfo;
class macro;
class troff_output_file;
class tfont;
class environment;
class glyph_node;
class diverted_space_node;
class token_node;
struct node {
node *next;
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node *last;
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node();
node(node *n);
node *add_char(charinfo *c, environment *, hunits *widthp);
virtual ~node();
virtual node *copy() = 0;
virtual hunits width();
virtual hunits subscript_correction();
virtual hunits italic_correction();
virtual hunits left_italic_correction();
virtual hunits skew();
virtual int nspaces();
virtual int merge_space(hunits);
virtual vunits vertical_width();
virtual node *last_char_node();
virtual void vertical_extent(vunits *min, vunits *max);
virtual int character_type();
virtual void set_vertical_size(vertical_size *);
virtual int ends_sentence();
virtual node *merge_self(node *);
virtual node *add_discretionary_hyphen();
virtual node *add_self(node *, hyphen_list **);
virtual hyphen_list *get_hyphen_list(hyphen_list *s = 0);
virtual void ascii_print(ascii_output_file *);
virtual void asciify(macro *);
virtual int discardable();
virtual void spread_space(int *, hunits *);
virtual void freeze_space();
virtual breakpoint *get_breakpoints(hunits width, int nspaces,
breakpoint *rest = 0,
int is_inner = 0);
virtual int nbreaks();
virtual void split(int, node **, node **);
virtual hyphenation_type get_hyphenation_type();
virtual int reread(int *);
virtual token_node *get_token_node();
virtual int overlaps_vertically();
virtual int overlaps_horizontally();
virtual units size();
virtual int interpret(macro *);
virtual node *merge_glyph_node(glyph_node *);
virtual tfont *get_tfont();
virtual void tprint(troff_output_file *);
virtual void zero_width_tprint(troff_output_file *);
node *add_italic_correction(hunits *);
virtual int same(node *) = 0;
virtual const char *type() = 0;
};
inline node::node() : next(0)
{
}
inline node::node(node *n) : next(n)
{
}
inline node::~node()
{
}
// 0 means it doesn't, 1 means it does, 2 means it's transparent
int node_list_ends_sentence(node *);
struct breakpoint {
breakpoint *next;
hunits width;
int nspaces;
node *nd;
int index;
char hyphenated;
};
class line_start_node : public node {
public:
line_start_node() {}
node *copy() { return new line_start_node; }
int same(node *);
const char *type();
void asciify(macro *);
};
class space_node : public node {
private:
#if 0
enum { BLOCK = 1024 };
static space_node *free_list;
void operator delete(void *);
#endif
protected:
hunits n;
char set;
space_node(hunits, int, node * = 0);
public:
space_node(hunits d, node *p = 0);
#if 0
~space_node();
void *operator new(size_t);
#endif
node *copy();
int nspaces();
hunits width();
int discardable();
int merge_space(hunits);
void freeze_space();
void spread_space(int*, hunits*);
void tprint(troff_output_file *);
breakpoint *get_breakpoints(hunits width, int nspaces, breakpoint *rest = 0,
int is_inner = 0);
int nbreaks();
void split(int, node **, node **);
void ascii_print(ascii_output_file *);
int same(node *);
const char *type();
};
class word_space_node : public space_node {
protected:
word_space_node(hunits, int, node * = 0);
public:
word_space_node(hunits, node * = 0);
node *copy();
void tprint(troff_output_file *);
int same(node *);
const char *type();
};
class unbreakable_space_node : public word_space_node {
unbreakable_space_node(hunits, int, node * = 0);
public:
unbreakable_space_node(hunits, node * = 0);
node *copy();
int same(node *);
const char *type();
breakpoint *get_breakpoints(hunits width, int nspaces, breakpoint *rest = 0,
int is_inner = 0);
int nbreaks();
void split(int, node **, node **);
int merge_space(hunits);
};
class diverted_space_node : public node {
public:
vunits n;
diverted_space_node(vunits d, node *p = 0);
node *copy();
int reread(int *);
int same(node *);
const char *type();
};
class diverted_copy_file_node : public node {
symbol filename;
public:
vunits n;
diverted_copy_file_node(symbol s, node *p = 0);
node *copy();
int reread(int *);
int same(node *);
const char *type();
};
class extra_size_node : public node {
vunits n;
public:
extra_size_node(vunits i) : n(i) {}
void set_vertical_size(vertical_size *);
node *copy();
int same(node *);
const char *type();
};
class vertical_size_node : public node {
vunits n;
public:
vertical_size_node(vunits i) : n(i) {}
void set_vertical_size(vertical_size *);
void asciify(macro *);
node *copy();
int same(node *);
const char *type();
};
class hmotion_node : public node {
protected:
hunits n;
public:
hmotion_node(hunits i, node *next = 0) : node(next), n(i) {}
node *copy();
void tprint(troff_output_file *);
hunits width();
void ascii_print(ascii_output_file *);
int same(node *);
const char *type();
};
class space_char_hmotion_node : public hmotion_node {
public:
space_char_hmotion_node(hunits i, node *next = 0);
node *copy();
void ascii_print(ascii_output_file *);
void asciify(macro *);
int same(node *);
const char *type();
};
class vmotion_node : public node {
vunits n;
public:
vmotion_node(vunits i) : n(i) {}
void tprint(troff_output_file *);
node *copy();
vunits vertical_width();
int same(node *);
const char *type();
};
class hline_node : public node {
hunits x;
node *n;
public:
hline_node(hunits i, node *c, node *next = 0) : node(next), x(i), n(c) {}
~hline_node();
node *copy();
hunits width();
void tprint(troff_output_file *);
int same(node *);
const char *type();
};
class vline_node : public node {
vunits x;
node *n;
public:
vline_node(vunits i, node *c, node *next= 0) : node(next), x(i), n(c) {}
~vline_node();
node *copy();
void tprint(troff_output_file *);
hunits width();
vunits vertical_width();
void vertical_extent(vunits *, vunits *);
int same(node *);
const char *type();
};
class dummy_node : public node {
public:
dummy_node(node *nd = 0) : node(nd) {}
node *copy();
int same(node *);
const char *type();
hyphenation_type get_hyphenation_type();
};
class transparent_dummy_node : public node {
public:
transparent_dummy_node() {}
node *copy();
int same(node *);
const char *type();
int ends_sentence();
hyphenation_type get_hyphenation_type();
};
class zero_width_node : public node {
node *n;
public:
zero_width_node(node *gn);
~zero_width_node();
node *copy();
void tprint(troff_output_file *);
int same(node *);
const char *type();
void append(node *);
int character_type();
void vertical_extent(vunits *min, vunits *max);
};
class left_italic_corrected_node : public node {
node *n;
hunits x;
public:
left_italic_corrected_node(node * = 0);
~left_italic_corrected_node();
void tprint(troff_output_file *);
void ascii_print(ascii_output_file *);
void asciify(macro *);
node *copy();
int same(node *);
const char *type();
hunits width();
node *last_char_node();
void vertical_extent(vunits *, vunits *);
int ends_sentence();
int overlaps_horizontally();
int overlaps_vertically();
hyphenation_type get_hyphenation_type();
tfont *get_tfont();
int character_type();
hunits skew();
hunits italic_correction();
hunits subscript_correction();
hyphen_list *get_hyphen_list(hyphen_list *ss = 0);
node *add_self(node *, hyphen_list **);
node *merge_glyph_node(glyph_node *);
};
class overstrike_node : public node {
node *list;
hunits max_width;
public:
overstrike_node();
~overstrike_node();
node *copy();
void tprint(troff_output_file *);
void overstrike(node *); // add another node to be overstruck
hunits width();
int same(node *);
const char *type();
};
class bracket_node : public node {
node *list;
hunits max_width;
public:
bracket_node();
~bracket_node();
node *copy();
void tprint(troff_output_file *);
void bracket(node *); // add another node to be overstruck
hunits width();
int same(node *);
const char *type();
};
class special_node : public node {
macro mac;
void tprint_start(troff_output_file *);
void tprint_char(troff_output_file *, unsigned char);
void tprint_end(troff_output_file *);
public:
special_node(const macro &);
node *copy();
void tprint(troff_output_file *);
int same(node *);
const char *type();
};
struct hvpair {
hunits h;
vunits v;
hvpair();
};
class draw_node : public node {
int npoints;
font_size sz;
char code;
hvpair *point;
public:
draw_node(char, hvpair *, int, font_size);
~draw_node();
hunits width();
vunits vertical_width();
node *copy();
void tprint(troff_output_file *);
int same(node *);
const char *type();
};
class charinfo;
node *make_node(charinfo *ci, environment *);
int character_exists(charinfo *, environment *);
int same_node_list(node *n1, node *n2);
node *reverse_node_list(node *n);
void delete_node_list(node *);
node *copy_node_list(node *);
int get_bold_fontno(int f);
inline hyphen_list::hyphen_list(unsigned char code, hyphen_list *p)
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: hyphen(0), breakable(0), hyphenation_code(code), next(p)
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{
}
extern void read_desc();
extern int mount_font(int n, symbol, symbol = NULL_SYMBOL);
extern void mount_style(int n, symbol);
extern int is_good_fontno(int n);
extern int symbol_fontno(symbol);
extern int next_available_font_position();
extern void init_size_table(int *);
extern int get_underline_fontno();
class output_file {
char make_g_plus_plus_shut_up;
public:
output_file();
virtual ~output_file();
virtual void trailer(vunits page_length);
virtual void flush() = 0;
virtual void transparent_char(unsigned char) = 0;
virtual void print_line(hunits x, vunits y, node *n,
vunits before, vunits after) = 0;
virtual void begin_page(int pageno, vunits page_length) = 0;
virtual void copy_file(hunits x, vunits y, const char *filename) = 0;
virtual int is_printing() = 0;
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virtual void put_filename (const char *filename);
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#ifdef COLUMN
virtual void vjustify(vunits, symbol);
#endif /* COLUMN */
};
#ifndef POPEN_MISSING
extern char *pipe_command;
#endif
extern output_file *the_output;
extern void init_output();
int in_output_page_list(int n);
class font_family {
int *map;
int map_size;
public:
const symbol nm;
font_family(symbol);
~font_family();
int make_definite(int);
static void invalidate_fontno(int);
};
font_family *lookup_family(symbol);