-/*
- directional-element.cc -- implement Directional_element
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1999--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
-
-#include "directional-element-interface.hh"
-
+/*
+ directional-element-interface.cc -- implement Directional_element
+ source file of the GNU LilyPond music typesetter
+ (c) 1999--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
-bool
-Directional_element_interface::has_interface (Grob*me)
-{
- return isdir_b (me->get_grob_property ("direction"));
-}
+#include "directional-element-interface.hh"
+#include "warn.hh"
+#include "grob.hh"
Direction
-Directional_element_interface::get (Grob*me)
+get_grob_direction (Grob *me)
{
- // return dir_;
- SCM d= me->get_grob_property ("direction");
- if (!isdir_b (d))
+ SCM d = me->get_property ("direction");
+ if (d == ly_symbol2scm ("calculation-in-progress"))
+ {
+ programming_error ("Grob direction requested while calculation in progress. ");
+ return UP;
+ }
+ if (!is_direction (d))
return CENTER;
-
+
return to_dir (d);
}
void
-Directional_element_interface::set (Grob*me, Direction d)
+set_grob_direction (Grob *me, Direction d)
{
- SCM sd = gh_int2scm (d);
-
- /*
- Vain attempt to save some conses.
- */
- if (me->get_grob_property ("direction") != sd)
- me->set_grob_property ("direction", sd);
+ SCM sd = scm_from_int (d);
+ me->set_property ("direction", sd);
}