/contrib/groff/src/include/printer.h
https://bitbucket.org/freebsd/freebsd-head/ · C++ Header · 107 lines · 57 code · 13 blank · 37 comment · 0 complexity · 5cefcb4f67cdf06a4f21adb1ce555047 MD5 · raw file
- // -*- C++ -*-
- // <groff_src_dir>/src/include/printer.h
- /* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2002, 2003, 2004
- Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.com)
- Last update: 15 Dec 2004
- 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 2, 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 COPYING. If not, write to the Free
- Software Foundation, 51 Franklin St - Fifth Floor, Boston, MA
- 02110-1301, USA.
- */
- /* Description
- The class `printer' performs the postprocessing. Each
- postprocessor only needs to implement a derived class of `printer' and
- a suitable function `make_printer' for the device-dependent tasks.
- Then the methods of class `printer' are called automatically by
- `do_file()' in `input.cpp'.
- */
- #include "color.h"
- struct environment {
- int fontno;
- int size;
- int hpos;
- int vpos;
- int height;
- int slant;
- color *col;
- color *fill;
- };
- class font;
- struct font_pointer_list {
- font *p;
- font_pointer_list *next;
- font_pointer_list(font *, font_pointer_list *);
- };
- class printer {
- public:
- printer();
- virtual ~printer();
- void load_font(int i, const char *name);
- void set_ascii_char(unsigned char c, const environment *env,
- int *widthp = 0);
- void set_special_char(const char *nm, const environment *env,
- int *widthp = 0);
- virtual void set_numbered_char(int n, const environment *env,
- int *widthp = 0);
- int set_char_and_width(const char *nm, const environment *env,
- int *widthp, font **f);
- font *get_font_from_index(int fontno);
- virtual void draw(int code, int *p, int np, const environment *env);
- // perform change of line color (text, outline) in the print-out
- virtual void change_color(const environment * const env);
- // perform change of fill color in the print-out
- virtual void change_fill_color(const environment * const env);
- virtual void begin_page(int) = 0;
- virtual void end_page(int page_length) = 0;
- virtual font *make_font(const char *nm);
- virtual void end_of_line();
- virtual void special(char *arg, const environment *env,
- char type = 'p');
- virtual void devtag(char *arg, const environment *env,
- char type = 'p');
- protected:
- font_pointer_list *font_list;
- font **font_table;
- int nfonts;
- // information about named characters
- int is_char_named;
- int is_named_set;
- char named_command;
- const char *named_char_s;
- int named_char_n;
- private:
- font *find_font(const char *);
- virtual void set_char(int index, font *f, const environment *env,
- int w, const char *name) = 0;
- };
- printer *make_printer();