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/* pdfaction.h
Copyright 2009 Taco Hoekwater <taco@luatex.org>
This file is part of LuaTeX.
LuaTeX 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 of the License, or (at your
option) any later version.
LuaTeX 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 Lesser General Public
License for more details.
You should have received a copy of the GNU General Public License along
with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
/* $Id: pdfaction.h 2801 2009-07-10 13:12:59Z taco $ */
#ifndef PDFACTION_H
# define PDFACTION_H
/* pdf action spec */
# define pdf_action_size 4
typedef enum {
pdf_action_page = 0,
pdf_action_goto,
pdf_action_thread,
pdf_action_user
} pdf_action_type;
typedef enum {
pdf_window_notset,
pdf_window_new,
pdf_window_nonew,
} pdf_window_type;
# define pdf_action_type(a) type((a) + 1) /* enum pdf_action_type */
# define pdf_action_named_id(a) subtype((a) + 1) /* boolean */
# define pdf_action_id(a) vlink((a) + 1) /* number or toks */
# define pdf_action_file(a) vinfo((a) + 2) /* toks */
# define pdf_action_new_window(a) vlink((a) + 2) /* enum pdf_window_type */
# define pdf_action_tokens(a) vinfo((a) + 3) /* toks */
# define pdf_action_refcount(a) vlink((a) + 3) /* number */
/* increase count of references to this action. this is used to speed up copy_node() */
# define add_action_ref(a) pdf_action_refcount((a))++
/* decrease count of references to this
action; free it if there is no reference to this action*/
# define delete_action_ref(a) { \
if (pdf_action_refcount(a) == null) { \
delete_action_node(a); \
} else { \
decr(pdf_action_refcount(a)); \
} \
}
# define set_pdf_action_type(A,B) pdf_action_type(A)=B
# define set_pdf_action_tokens(A,B) pdf_action_tokens(A)=B
# define set_pdf_action_file(A,B) pdf_action_file(A)=B
# define set_pdf_action_id(A,B) pdf_action_id(A)=B
# define set_pdf_action_named_id(A,B) pdf_action_named_id(A)=B
# define set_pdf_action_new_window(A,B) pdf_action_new_window(A)=B
extern halfword scan_action(PDF pdf);
extern void write_action(PDF pdf, halfword p);
extern void delete_action_node(halfword a);
#endif
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