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

   1 /* pdflistout.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 PDFLISTOUT_H
  22 #  define PDFLISTOUT_H
  23
  24 #  define pos_right(A) pdf->posstruct->pos.h = pdf->posstruct->pos.h + (A)
  25 #  define pos_left(A)  pdf->posstruct->pos.h = pdf->posstruct->pos.h - (A)
  26 #  define pos_up(A)    pdf->posstruct->pos.v = pdf->posstruct->pos.v + (A)
  27 #  define pos_down(A)  pdf->posstruct->pos.v = pdf->posstruct->pos.v - (A)
  28
  29 typedef void (*backend_function) (); /* variadic arguments  */
  30
  31 typedef struct {
  32     char *name;                    /* name of the backend */
  33     backend_function *node_fu;     /* array of node output functions */
  34     backend_function *whatsit_fu;  /* array of whatsit output functions */
  35 } backend_struct;
  36
  37 extern pos_info_structure pos_info;
  38
  39 extern backend_function *backend_out;
  40 extern backend_function *backend_out_whatsit;
  41
  42 extern void init_backend_functionpointers(output_mode o_mode);
  43
  44 extern void hlist_out(PDF pdf, halfword this_box, int rule_callback_id);
  45 extern void vlist_out(PDF pdf, halfword this_box, int rule_callback_id);
  46 extern void out_what(PDF pdf, halfword p);
  47
  48 #endif