release: 1.3.142

[lilypond.git] / lily / directional-element-interface.cc

diff --git a/lily/directional-element-interface.cc b/lily/directional-element-interface.cc
index 4cc5ebb52f1ae2a3b416ab01fd7e72ece015df41..7f986d51ee1070ff2c7c15f5fd91a3640d72bb82 100644 (file)
--- a/lily/directional-element-interface.cc
+++ b/lily/directional-element-interface.cc
@@ -3,46 +3,45 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1999--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
 #include "directional-element-interface.hh"
 
 
-Directional_element_interface::Directional_element_interface (Score_element const *s)
+SCM Directional_element_interface::direction_sym;
+
+static void
+init_functions ()
 {
-  elt_l_ =  (Score_element*)s;
+  Directional_element_interface::direction_sym = scm_permanent_object (ly_symbol2scm ("direction"));
 }
+ADD_SCM_INIT_FUNC (Directional, init_functions);
+
 
 bool
-Directional_element_interface::has_interface_b () const
+Directional_element_interface::has_interface (Grob*me) 
 {
-  return isdir_b (elt_l_->get_elt_property ("direction"));
+  return isdir_b (me->get_grob_property (direction_sym));
 }
 
-
-  
-
 Direction
-Directional_element_interface::get () const
+Directional_element_interface::get (Grob*me) 
 {
   // return dir_;
-  SCM d= elt_l_->get_elt_property ("direction");
-  if (!isdir_b(d))
+  SCM d= me->get_grob_property (direction_sym);
+  if (!isdir_b (d))
     return CENTER;
       
   return to_dir (d);
 }
 
 void
-Directional_element_interface::set (Direction d) 
+Directional_element_interface::set (Grob*me, Direction d) 
 {
-  elt_l_->set_elt_property ("direction", gh_int2scm (d));
-}
+  SCM sd = gh_int2scm (d);
 
-Directional_element_interface
-directional_element (Score_element const*s)
-{
-  return s;
+  if (me->get_grob_property (direction_sym) != sd)
+    me->set_grob_property (direction_sym, sd);
 }