home *** CD-ROM | disk | FTP | other *** search
- // -*- C++ -*-
- /* Copyright (C) 1989, 1990 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 line_type {
- enum { invisible, solid, dotted, dashed } type;
- double dash_width;
- double thickness; // the thickness is in points
-
- line_type();
- };
-
-
- class output {
- protected:
- char *args;
- double desired_height; // zero if no height specified
- double desired_width; // zero if no depth specified
- double compute_scale(double, const position &, const position &);
- public:
- output();
- virtual ~output();
- void set_desired_width_height(double wid, double ht);
- void set_args(const char *);
- virtual void start_picture(double sc, const position &ll, const position &ur) = 0;
- virtual void finish_picture() = 0;
- virtual void circle(const position &, double rad,
- const line_type &, double) = 0;
- virtual void text(const position &, text_piece *, int, double) = 0;
- virtual void line(const position &, const position *, int n,
- const line_type &) = 0;
- virtual void polygon(const position *, int n,
- const line_type &, double) = 0;
- virtual void spline(const position &, const position *, int n,
- const line_type &) = 0;
- virtual void arc(const position &, const position &, const position &,
- const line_type &) = 0;
- virtual void ellipse(const position &, const distance &,
- const line_type &, double) = 0;
- virtual void rounded_box(const position &, const distance &, double,
- const line_type &, double) = 0;
- virtual void command(const char *, const char *, int);
- virtual void set_location(const char *, int);
- virtual int supports_filled_polygons();
- virtual void begin_block(const position &ll, const position &ur);
- virtual void end_block();
- };
-
- extern output *out;
-
- output *make_troff_output();
- output *make_grops_output();
- output *make_tex_output();
- output *make_tpic_output();
- output *make_fig_output();
-