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% pdfannot.w
%
% Copyright 2009-2011 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/>.
@ @c
static const char _svn_version[] =
"$Id: pdfannot.w 4442 2012-05-25 22:40:34Z hhenkel $"
"$URL: https://foundry.supelec.fr/svn/luatex/trunk/source/texk/web2c/luatexdir/pdf/pdfannot.w $";
#include "ptexlib.h"
@ @c
#define tail cur_list.tail_field
void do_annot(PDF pdf, halfword p, halfword parent_box, scaledpos cur)
{
scaled_whd alt_rule;
int k;
if (global_shipping_mode == SHIPPING_FORM)
pdf_error("ext4", "annotations cannot be inside an XForm");
if (doing_leaders)
return;
if (is_obj_scheduled(pdf, pdf_annot_objnum(p))) {
k = pdf_create_obj(pdf, obj_type_annot, 0);
obj_annot_ptr(pdf, pdf_annot_objnum(p)) = p;
pdf_annot_objnum(p) = k;
}
alt_rule.wd = width(p);
alt_rule.ht = height(p);
alt_rule.dp = depth(p);
set_rect_dimens(pdf, p, parent_box, cur, alt_rule, 0);
obj_annot_ptr(pdf, pdf_annot_objnum(p)) = p;
addto_page_resources(pdf, obj_type_annot, pdf_annot_objnum(p));
}
@ create a new whatsit node for annotation
@c
void new_annot_whatsit(small_number w)
{
scaled_whd alt_rule;
new_whatsit(w);
alt_rule = scan_alt_rule(); /* scans |<rule spec>| to |alt_rule| */
set_width(tail, alt_rule.wd);
set_height(tail, alt_rule.ht);
set_depth(tail, alt_rule.dp);
if ((w == pdf_thread_node) || (w == pdf_start_thread_node)) {
if (scan_keyword("attr")) {
scan_pdf_ext_toks();
set_pdf_thread_attr(tail, def_ref);
} else {
set_pdf_thread_attr(tail, null);
}
}
}
@ @c
void scan_annot(PDF pdf)
{
int k;
if (scan_keyword("reserveobjnum")) {
k = pdf_create_obj(pdf, obj_type_annot, 0);
/* Scan an optional space */
get_x_token();
if (cur_cmd != spacer_cmd)
back_input();
} else {
if (scan_keyword("useobjnum")) {
scan_int();
k = cur_val;
check_obj_type(pdf, obj_type_annot, k);
if (obj_annot_ptr(pdf, k) != 0)
pdf_error("ext1", "annot object in use");
} else {
k = pdf_create_obj(pdf, obj_type_annot, 0);
}
new_annot_whatsit(pdf_annot_node);
obj_annot_ptr(pdf, k) = tail;
set_pdf_annot_objnum(tail, k);
scan_pdf_ext_toks();
set_pdf_annot_data(tail, def_ref);
}
pdf_last_annot = k;
}
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