/*
- semi-tie-column.cc -- implement Semi_tie_column
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2005--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond 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 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond 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.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "semi-tie-column.hh"
ADD_INTERFACE (Semi_tie_column,
- "The interface for a column of l.v. ties.",
+ "The interface for a column of l.v. (laissez vibrer) ties.",
/* properties */
"positioning-done "
return SCM_BOOL_T;
}
+MAKE_SCHEME_CALLBACK (Semi_tie_column, calc_head_direction, 1);
+SCM
+Semi_tie_column::calc_head_direction (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ extract_grob_set (me, "ties", ties);
+ Direction d = LEFT;
+ for (vsize i = 0; i < ties.size (); i++)
+ {
+ Direction this_d = to_dir (ties[i]->get_property ("head-direction"));
+ if (i > 0 && d != this_d)
+ {
+ programming_error ("all semi-ties in a semi-tie-column should have the same head-direction");
+ return scm_from_int (d);
+ }
+ d = this_d;
+ }
+ return scm_from_int (d);
+}