projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| e79d4cdd WJ |
1 | // -*- C++ -*- |
| 2 | /* Copyright (C) 1989, 1990 Free Software Foundation, Inc. | |
| 3 | Written by James Clark (jjc@jclark.uucp) | |
| 4 | ||
| 5 | This file is part of groff. | |
| 6 | ||
| 7 | groff is free software; you can redistribute it and/or modify it under | |
| 8 | the terms of the GNU General Public License as published by the Free | |
| 9 | Software Foundation; either version 1, or (at your option) any later | |
| 10 | version. | |
| 11 | ||
| 12 | groff is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 | for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License along | |
| 18 | with groff; see the file LICENSE. If not, write to the Free Software | |
| 19 | Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 20 | ||
| 21 | struct line_type { | |
| 22 | enum { invisible, solid, dotted, dashed } type; | |
| 23 | double dash_width; | |
| 24 | double thickness; // the thickness is in points | |
| 25 | ||
| 26 | line_type(); | |
| 27 | }; | |
| 28 | ||
| 29 | ||
| 30 | class output { | |
| 31 | protected: | |
| 32 | char *args; | |
| 33 | double desired_height; // zero if no height specified | |
| 34 | double desired_width; // zero if no depth specified | |
| 35 | double compute_scale(double, const position &, const position &); | |
| 36 | public: | |
| 37 | output(); | |
| 38 | virtual ~output(); | |
| 39 | void set_desired_width_height(double wid, double ht); | |
| 40 | void set_args(const char *); | |
| 41 | virtual void start_picture(double sc, const position &ll, const position &ur) = 0; | |
| 42 | virtual void finish_picture() = 0; | |
| 43 | virtual void circle(const position &, double rad, | |
| 44 | const line_type &, double) = 0; | |
| 45 | virtual void text(const position &, text_piece *, int, double) = 0; | |
| 46 | virtual void line(const position &, const position *, int n, | |
| 47 | const line_type &) = 0; | |
| 48 | virtual void polygon(const position *, int n, | |
| 49 | const line_type &, double) = 0; | |
| 50 | virtual void spline(const position &, const position *, int n, | |
| 51 | const line_type &) = 0; | |
| 52 | virtual void arc(const position &, const position &, const position &, | |
| 53 | const line_type &) = 0; | |
| 54 | virtual void ellipse(const position &, const distance &, | |
| 55 | const line_type &, double) = 0; | |
| 56 | virtual void rounded_box(const position &, const distance &, double, | |
| 57 | const line_type &, double) = 0; | |
| 58 | virtual void command(const char *, const char *, int); | |
| 59 | virtual void set_location(const char *, int); | |
| 60 | virtual int supports_filled_polygons(); | |
| 61 | virtual void begin_block(const position &ll, const position &ur); | |
| 62 | virtual void end_block(); | |
| 63 | }; | |
| 64 | ||
| 65 | extern output *out; | |
| 66 | ||
| 67 | output *make_troff_output(); | |
| 68 | output *make_grops_output(); | |
| 69 | output *make_tex_output(); | |
| 70 | output *make_tpic_output(); | |
| 71 | output *make_fig_output(); |