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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 place;
enum object_type {
OTHER_OBJECT,
BOX_OBJECT,
CIRCLE_OBJECT,
ELLIPSE_OBJECT,
ARC_OBJECT,
SPLINE_OBJECT,
LINE_OBJECT,
ARROW_OBJECT,
MOVE_OBJECT,
TEXT_OBJECT,
BLOCK_OBJECT,
MARK_OBJECT
};
struct bounding_box;
struct object {
object *prev;
object *next;
object();
virtual ~object();
virtual position origin();
virtual double width();
virtual double radius();
virtual double height();
virtual position north();
virtual position south();
virtual position east();
virtual position west();
virtual position north_east();
virtual position north_west();
virtual position south_east();
virtual position south_west();
virtual position start();
virtual position end();
virtual position center();
virtual place *find_label(const char *);
virtual void move_by(const position &);
virtual int blank();
virtual void update_bounding_box(bounding_box *);
virtual object_type type() = 0;
virtual void print();
virtual void print_text();
};
typedef position (object::*corner)();
struct place {
object *obj;
double x, y;
};
struct string_list;
class path {
corner crn;
string_list *label_list;
path *ypath;
public:
path(corner = 0);
path(char *, corner = 0);
~path();
void append(corner);
void append(char *);
void set_ypath(path *);
int follow(const place &, place *) const;
};
struct object_list {
object *head;
object *tail;
object_list();
void append(object *);
void wrap_up_block(object_list *);
};
declare_ptable(place)
// these go counterclockwise
enum direction {
RIGHT_DIRECTION,
UP_DIRECTION,
LEFT_DIRECTION,
DOWN_DIRECTION
};
struct graphics_state {
double x, y;
direction dir;
};
struct saved_state : public graphics_state {
saved_state *prev;
PTABLE(place) *tbl;
};
struct text_item {
text_item *next;
char *text;
adjustment adj;
const char *filename;
int lineno;
text_item(char *, const char *, int);
~text_item();
};
const unsigned long IS_DOTTED = 01;
const unsigned long IS_DASHED = 02;
const unsigned long IS_CLOCKWISE = 04;
const unsigned long IS_INVISIBLE = 020;
const unsigned long HAS_LEFT_ARROW_HEAD = 040;
const unsigned long HAS_RIGHT_ARROW_HEAD = 0100;
const unsigned long HAS_SEGMENT = 0200;
const unsigned long IS_SAME = 0400;
const unsigned long HAS_FROM = 01000;
const unsigned long HAS_AT = 02000;
const unsigned long HAS_WITH = 04000;
const unsigned long HAS_HEIGHT = 010000;
const unsigned long HAS_WIDTH = 020000;
const unsigned long HAS_RADIUS = 040000;
const unsigned long HAS_TO = 0100000;
const unsigned long IS_CHOPPED = 0200000;
const unsigned long IS_DEFAULT_CHOPPED = 0400000;
const unsigned long HAS_THICKNESS = 01000000;
const unsigned long IS_FILLED = 02000000;
const unsigned long IS_DEFAULT_FILLED = 04000000;
const unsigned long IS_ALIGNED = 010000000;
struct segment {
int is_absolute;
position pos;
segment *next;
segment(const position &, int, segment *);
};
struct rectangle_object;
struct graphic_object;
struct linear_object;
struct object_spec {
unsigned long flags;
object_type type;
object_list oblist;
PTABLE(place) *tbl;
double dash_width;
position from;
position to;
position at;
position by;
path *with;
text_item *text;
double height;
double radius;
double width;
double segment_width;
double segment_height;
double start_chop;
double end_chop;
double thickness;
double fill;
direction dir;
segment *segment_list;
position segment_pos;
int segment_is_absolute;
object_spec(object_type);
~object_spec();
object *make_object(position *, direction *);
graphic_object *make_box(position *, direction *);
graphic_object *make_block(position *, direction *);
graphic_object *make_text(position *, direction *);
graphic_object *make_ellipse(position *, direction *);
graphic_object *make_circle(position *, direction *);
linear_object *make_line(position *, direction *);
linear_object *make_arc(position *, direction *);
graphic_object *make_linear(position *, direction *);
graphic_object *make_move(position *, direction *);
int position_rectangle(rectangle_object *p, position *curpos,
direction *dirp);
};
object *make_object(object_spec *, position *, direction *);
object *make_mark_object();
object *make_command_object(char *, const char *, int);
int lookup_variable(const char *name, double *val);
void define_variable(const char *name, double val);
void print_picture(object *);
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