72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
// -*- C++ -*-
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/* Copyright (C) 1989, 1990 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.uucp)
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This file is part of groff.
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groff is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 1, or (at your option) any later
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version.
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groff is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with groff; see the file LICENSE. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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struct line_type {
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enum { invisible, solid, dotted, dashed } type;
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double dash_width;
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double thickness; // the thickness is in points
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line_type();
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};
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class output {
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protected:
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char *args;
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double desired_height; // zero if no height specified
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double desired_width; // zero if no depth specified
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double compute_scale(double, const position &, const position &);
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public:
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output();
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virtual ~output();
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void set_desired_width_height(double wid, double ht);
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void set_args(const char *);
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virtual void start_picture(double sc, const position &ll, const position &ur) = 0;
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virtual void finish_picture() = 0;
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virtual void circle(const position &, double rad,
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const line_type &, double) = 0;
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virtual void text(const position &, text_piece *, int, double) = 0;
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virtual void line(const position &, const position *, int n,
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const line_type &) = 0;
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virtual void polygon(const position *, int n,
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const line_type &, double) = 0;
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virtual void spline(const position &, const position *, int n,
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const line_type &) = 0;
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virtual void arc(const position &, const position &, const position &,
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const line_type &) = 0;
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virtual void ellipse(const position &, const distance &,
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const line_type &, double) = 0;
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virtual void rounded_box(const position &, const distance &, double,
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const line_type &, double) = 0;
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virtual void command(const char *, const char *, int);
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virtual void set_location(const char *, int);
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virtual int supports_filled_polygons();
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virtual void begin_block(const position &ll, const position &ur);
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virtual void end_block();
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};
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extern output *out;
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output *make_troff_output();
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output *make_grops_output();
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output *make_tex_output();
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output *make_tpic_output();
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output *make_fig_output();
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