1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
// -*- C++ -*-
/* Copyright (C) 1989-2020 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 3 of the License, 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 this program. If not, see <http://www.gnu.org/licenses/>. */
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 {
position pos;
corner crn;
string_list *label_list;
path *ypath;
int is_position;
public:
path(corner = 0);
path(position);
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;
const unsigned long IS_SHADED = 020000000;
const unsigned long IS_OUTLINED = 040000000;
const unsigned long IS_XSLANTED = 0100000000;
const unsigned long IS_YSLANTED = 0200000000;
struct segment {
int is_absolute;
position pos;
segment *next;
segment(const position &, int, segment *);
};
class rectangle_object;
class graphic_object;
class 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;
double xslanted;
double yslanted;
char *shaded;
char *outlined;
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 *);
|
