source/texk/web2c/luatexdir/pdf/pdfaction.h

   1 /* pdfaction.h
   2
   3    Copyright 2009 Taco Hoekwater <taco@luatex.org>
   4
   5    This file is part of LuaTeX.
   6
   7    LuaTeX is free software; you can redistribute it and/or modify it under
   8    the terms of the GNU General Public License as published by the Free
   9    Software Foundation; either version 2 of the License, or (at your
  10    option) any later version.
  11
  12    LuaTeX is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License along
  18    with LuaTeX; if not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #ifndef PDFACTION_H
  22 #  define PDFACTION_H
  23
  24 /*
  25     Increase count of references to this action. this is used to speed up
  26     copy_node().
  27 */
  28
  29 #  define add_action_ref(a) pdf_action_refcount((a))++
  30
  31 /*
  32     Decrease count of references to this action; free it if there is no reference
  33     to this action.
  34 */
  35
  36 #  define delete_action_ref(a) { \
  37     if (pdf_action_refcount(a) == null) { \
  38         flush_node(a); \
  39     } else { \
  40         pdf_action_refcount(a)--; \
  41     } \
  42 }
  43
  44 #  define set_pdf_action_type(A,B)       pdf_action_type(A)=B
  45 #  define set_pdf_action_tokens(A,B)     pdf_action_tokens(A)=B
  46 #  define set_pdf_action_file(A,B)       pdf_action_file(A)=B
  47 #  define set_pdf_action_id(A,B)         pdf_action_id(A)=B
  48 #  define set_pdf_action_named_id(A,B)   pdf_action_named_id(A)=B
  49 #  define set_pdf_action_new_window(A,B) pdf_action_new_window(A)=B
  50
  51 extern halfword scan_action(PDF pdf);
  52 extern void write_action(PDF pdf, halfword p);
  53
  54 #endif