310 lines
8.2 KiB
C++
310 lines
8.2 KiB
C++
// -*- C++ -*-
|
|
/* Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
|
|
Written by James Clark (jjc@jclark.uucp)
|
|
|
|
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 1, 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 LICENSE. If not, write to the Free Software
|
|
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
struct size_range {
|
|
int min;
|
|
int max;
|
|
};
|
|
|
|
class font_size {
|
|
static size_range *size_table;
|
|
static int nranges;
|
|
int p;
|
|
public:
|
|
font_size();
|
|
font_size(int points);
|
|
int to_points();
|
|
int to_scaled_points();
|
|
int to_units();
|
|
int operator==(font_size);
|
|
int operator!=(font_size);
|
|
static void init_size_table(int *sizes);
|
|
};
|
|
|
|
inline font_size::font_size() : p(0)
|
|
{
|
|
}
|
|
|
|
inline int font_size::operator==(font_size fs)
|
|
{
|
|
return p == fs.p;
|
|
}
|
|
|
|
inline int font_size::operator!=(font_size fs)
|
|
{
|
|
return p != fs.p;
|
|
}
|
|
|
|
inline int font_size::to_scaled_points()
|
|
{
|
|
return p;
|
|
}
|
|
|
|
inline int font_size::to_points()
|
|
{
|
|
return p/sizescale;
|
|
}
|
|
|
|
|
|
struct tab;
|
|
|
|
enum tab_type { TAB_NONE, TAB_LEFT, TAB_CENTER, TAB_RIGHT };
|
|
|
|
class tab_stops {
|
|
tab *initial_list;
|
|
tab *repeated_list;
|
|
public:
|
|
tab_stops();
|
|
tab_stops(hunits distance, tab_type type);
|
|
tab_stops(const tab_stops &);
|
|
~tab_stops();
|
|
void operator=(const tab_stops &);
|
|
tab_type distance_to_next_tab(hunits pos, hunits *distance);
|
|
void clear();
|
|
void add_tab(hunits pos, tab_type type, int repeated);
|
|
const char *to_string();
|
|
};
|
|
|
|
struct charinfo;
|
|
struct node;
|
|
struct breakpoint;
|
|
struct font_family;
|
|
struct pending_output_line;
|
|
|
|
class environment {
|
|
int dummy; // dummy environment used for \w
|
|
hunits prev_line_length;
|
|
hunits line_length;
|
|
hunits prev_title_length;
|
|
hunits title_length;
|
|
font_size prev_size;
|
|
font_size size;
|
|
int requested_size;
|
|
int prev_requested_size;
|
|
int char_height;
|
|
int char_slant;
|
|
int prev_fontno;
|
|
int fontno;
|
|
font_family *prev_family;
|
|
font_family *family;
|
|
int space_size; // in 36ths of an em
|
|
int sentence_space_size; // same but for spaces at the end of sentences
|
|
int adjust_mode;
|
|
int fill;
|
|
int interrupted;
|
|
int prev_line_interrupted;
|
|
int center_lines;
|
|
int right_justify_lines;
|
|
vunits prev_vertical_spacing;
|
|
vunits vertical_spacing;
|
|
int prev_line_spacing;
|
|
int line_spacing;
|
|
hunits prev_indent;
|
|
hunits indent;
|
|
hunits temporary_indent;
|
|
int have_temporary_indent;
|
|
hunits saved_indent;
|
|
hunits target_text_length;
|
|
int pre_underline_fontno;
|
|
int underline_lines;
|
|
symbol input_trap;
|
|
int input_trap_count;
|
|
node *line; // in reverse order
|
|
hunits prev_text_length;
|
|
hunits width_total;
|
|
int space_total;
|
|
hunits input_line_start;
|
|
tab_stops tabs;
|
|
node *tab_contents;
|
|
hunits tab_width;
|
|
hunits tab_distance;
|
|
tab_type current_tab;
|
|
node *leader_node;
|
|
charinfo *tab_char;
|
|
charinfo *leader_char;
|
|
int current_field; // is there a current field?
|
|
hunits field_distance;
|
|
hunits pre_field_width;
|
|
int field_spaces;
|
|
int tab_field_spaces;
|
|
int tab_precedes_field;
|
|
int discarding;
|
|
int spread_flag; // set by \p
|
|
node *margin_character_node;
|
|
hunits margin_character_distance;
|
|
node *numbering_nodes;
|
|
hunits line_number_digit_width;
|
|
int number_text_separation; // in digit spaces
|
|
int line_number_indent; // in digit spaces
|
|
int line_number_multiple;
|
|
int no_number_count;
|
|
unsigned hyphenation_flags;
|
|
int hyphen_line_count;
|
|
int hyphen_line_max;
|
|
hunits hyphenation_space;
|
|
hunits hyphenation_margin;
|
|
pending_output_line *pending_lines;
|
|
#ifdef WIDOW_CONTROL
|
|
int widow_control;
|
|
#endif /* WIDOW_CONTROL */
|
|
|
|
tab_type distance_to_next_tab(hunits *);
|
|
void start_line();
|
|
void output_line(node *, hunits);
|
|
void output(node *nd, int retain_size, vunits vs, int ls, hunits width);
|
|
void output_title(node *nd, int retain_size, vunits vs, int ls,
|
|
hunits width);
|
|
#ifdef WIDOW_CONTROL
|
|
void mark_last_line();
|
|
#endif /* WIDOW_CONTROL */
|
|
void possibly_break_line(int forced = 0);
|
|
breakpoint *choose_breakpoint();
|
|
void hyphenate_line();
|
|
void start_field();
|
|
void wrap_up_field();
|
|
node *make_tab_node(hunits d, node *next = 0);
|
|
node *get_prev_char();
|
|
public:
|
|
const symbol name;
|
|
unsigned char control_char;
|
|
unsigned char no_break_control_char;
|
|
charinfo *hyphen_indicator_char;
|
|
|
|
environment(symbol);
|
|
environment(const environment *); // for temporary environment
|
|
~environment();
|
|
int is_dummy() { return dummy; }
|
|
int is_empty();
|
|
vunits get_vertical_spacing(); // .v
|
|
int get_line_spacing(); // .L
|
|
int get_point_size() { return size.to_scaled_points(); }
|
|
font_size get_font_size() { return size; }
|
|
int get_size() { return size.to_units(); }
|
|
int get_requested_point_size() { return requested_size; }
|
|
int get_char_height() { return char_height; }
|
|
int get_char_slant() { return char_slant; }
|
|
hunits get_digit_width();
|
|
int get_font() { return fontno; }; // .f
|
|
font_family *get_family() { return family; }
|
|
int get_bold(); // .b
|
|
int get_adjust_mode(); // .j
|
|
int get_fill(); // .u
|
|
hunits get_indent(); // .i
|
|
hunits get_temporary_indent();
|
|
hunits get_line_length(); // .l
|
|
hunits get_saved_line_length(); // .ll
|
|
hunits get_saved_indent(); // .in
|
|
hunits get_title_length();
|
|
hunits get_prev_char_width(); // .w
|
|
hunits get_prev_char_skew();
|
|
vunits get_prev_char_height();
|
|
vunits get_prev_char_depth();
|
|
hunits get_text_length(); // .k
|
|
hunits get_prev_text_length(); // .n
|
|
hunits get_space_width();
|
|
int get_space_size(); // in ems/36
|
|
int get_sentence_space_size();
|
|
hunits get_narrow_space_width();
|
|
hunits get_half_narrow_space_width();
|
|
hunits get_input_line_position();
|
|
const char *get_tabs();
|
|
int get_hyphenation_flags();
|
|
int get_hyphen_line_max();
|
|
int get_hyphen_line_count();
|
|
hunits get_hyphenation_space();
|
|
hunits get_hyphenation_margin();
|
|
int get_center_lines();
|
|
int get_right_justify_lines();
|
|
int get_prev_line_interrupted() { return prev_line_interrupted; }
|
|
node *make_char_node(charinfo *);
|
|
node *extract_output_line();
|
|
void width_registers();
|
|
void wrap_up_tab();
|
|
void set_font(int);
|
|
void set_font(symbol);
|
|
void set_family(symbol);
|
|
void set_size(int);
|
|
void set_char_height(int);
|
|
void set_char_slant(int);
|
|
void set_input_line_position(hunits); // used by \n(hp
|
|
void interrupt();
|
|
void spread() { spread_flag = 1; }
|
|
void do_break(); // .br
|
|
void newline();
|
|
void handle_tab(int is_leader = 0); // do a tab or leader
|
|
void add_node(node *);
|
|
void add_char(charinfo *);
|
|
void add_hyphen_indicator();
|
|
void add_italic_correction();
|
|
void space();
|
|
void space_newline();
|
|
const char *get_font_family_string();
|
|
const char *get_name_string();
|
|
const char *get_point_size_string();
|
|
const char *get_requested_point_size_string();
|
|
void output_pending_lines();
|
|
|
|
friend void title_length();
|
|
friend void space_size();
|
|
friend void fill();
|
|
friend void no_fill();
|
|
friend void adjust();
|
|
friend void no_adjust();
|
|
friend void center();
|
|
friend void right_justify();
|
|
friend void vertical_spacing();
|
|
friend void line_spacing();
|
|
friend void line_length();
|
|
friend void indent();
|
|
friend void temporary_indent();
|
|
friend void underline();
|
|
friend void input_trap();
|
|
friend void set_tabs();
|
|
friend void margin_character();
|
|
friend void no_number();
|
|
friend void number_lines();
|
|
friend void leader_character();
|
|
friend void tab_character();
|
|
friend void hyphenate_request();
|
|
friend void no_hyphenate();
|
|
friend void hyphen_line_max_request();
|
|
friend void hyphenation_space_request();
|
|
friend void hyphenation_margin_request();
|
|
friend void line_width();
|
|
#if 0
|
|
friend void tabs_save();
|
|
friend void tabs_restore();
|
|
#endif
|
|
friend void title();
|
|
#ifdef WIDOW_CONTROL
|
|
friend void widow_control_request();
|
|
#endif /* WIDOW_CONTROL */
|
|
};
|
|
|
|
extern environment *curenv;
|
|
extern void pop_env();
|
|
extern void push_env(int);
|
|
|
|
void init_environments();
|
|
void read_hyphen_file(const char *name);
|
|
|
|
extern int break_flag;
|
|
extern symbol default_family;
|