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Diffstat (limited to 'src/preproc/pic/object.h')
| -rw-r--r-- | src/preproc/pic/object.h | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/preproc/pic/object.h b/src/preproc/pic/object.h new file mode 100644 index 0000000..e39b6a6 --- /dev/null +++ b/src/preproc/pic/object.h @@ -0,0 +1,227 @@ +// -*- 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 *); + |