Updates.

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

diff --git a/lily/directional-element-interface.cc b/lily/directional-element-interface.cc
index e34eea308ad05731d36beaf7eda4d6097d902c51..daf19d91a5c7607c716bb7151f82fee406cad4bf 100644 (file)
--- a/lily/directional-element-interface.cc
+++ b/lily/directional-element-interface.cc
@@ -3,40 +3,40 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1999--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
 #include "directional-element-interface.hh"
 
 
-Directional_element_interface::Directional_element_interface (Score_element const *s)
-{
-  elt_l_ =  (Score_element*)s;
-}
+
 
 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 ly_dir_p (me->get_grob_property ("direction"));
 }
 
-
-  
-
 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");
+  if (!ly_dir_p (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);
+
+  /*
+    Vain attempt to save some conses.
+   */
+  if (me->get_grob_property ("direction") != sd)
+    me->set_grob_property ("direction", sd);
 }