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-rw-r--r--src/include/printer.h54
1 files changed, 38 insertions, 16 deletions
diff --git a/src/include/printer.h b/src/include/printer.h
index 726277b9..4d5cbf52 100644
--- a/src/include/printer.h
+++ b/src/include/printer.h
@@ -1,23 +1,40 @@
// -*- C++ -*-
+
+// <groff_src_dir>/src/include/printer.h
+
/* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2002
Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.com)
-This file is part of groff.
+ Written by James Clark (jjc@jclark.com)
+
+ Last update: 12 Apr 2002
+
+ 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.
-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.
+ 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, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA.
+*/
-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.
+/* Description
-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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ The class `printer' performs the postprocessing. Each
+ postprocessor only need 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.cc'.
+*/
#include "color.h"
@@ -50,17 +67,22 @@ public:
int *widthp = 0);
void set_special_char(const char *nm, const environment *env,
int *widthp = 0);
- void set_numbered_char(int n, const environment *env, int *widthp = 0);
+ 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);
- virtual void change_color(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 special(char *arg, const environment *env,
+ char type = 'p');
protected:
font_pointer_list *font_list;