77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
// -*- C++ -*-
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/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.com)
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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 2, 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 COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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struct environment {
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int fontno;
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int size;
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int hpos;
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int vpos;
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int height;
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int slant;
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};
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struct font;
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struct font_pointer_list {
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font *p;
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font_pointer_list *next;
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font_pointer_list(font *, font_pointer_list *);
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};
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class printer {
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public:
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printer();
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virtual ~printer();
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void load_font(int i, const char *name);
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void set_ascii_char(unsigned char c, const environment *env,
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int *widthp = 0);
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void set_special_char(const char *nm, const environment *env,
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int *widthp = 0);
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void set_numbered_char(int n, const environment *env, int *widthp = 0);
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int set_char_and_width(const char *nm, const environment *env,
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int *widthp, font **f);
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virtual void draw(int code, int *p, int np, const environment *env);
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virtual void begin_page(int) = 0;
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virtual void end_page(int page_length) = 0;
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virtual font *make_font(const char *nm);
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virtual void end_of_line();
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virtual void special(char *arg, const environment *env);
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static int adjust_arc_center(const int *, double *);
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protected:
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font_pointer_list *font_list;
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// information about named characters
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int is_char_named;
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int is_named_set;
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char named_command;
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const char *named_char_s;
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int named_char_n;
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private:
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font **font_table;
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int nfonts;
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font *find_font(const char *);
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virtual void set_char(int index, font *f, const environment *env,
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int w, const char *name) = 0;
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};
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printer *make_printer();
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