''

[lilypond.git] / lily / tie-column.cc

diff --git a/lily/tie-column.cc b/lily/tie-column.cc
index 257885be9e9d59c8af1d599a7a38d9c4bdd64a1e..e364bf7f03299582d7394b9b869d70903e5c7577 100644 (file)
--- a/lily/tie-column.cc
+++ b/lily/tie-column.cc
@@ -3,7 +3,7 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 2000--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
@@ -16,40 +16,32 @@
 
 
 
-void
-Tie_column::set_interface (Score_element*me)
-{
-  me->set_interface (ly_symbol2scm ("tie-column"));
-  me->set_extent_callback (0, X_AXIS);
-  me->set_extent_callback (0, Y_AXIS);  
-}
 
-bool
-Tie_column::has_interface (Score_element*me)
-{
-  return  me->has_interface (ly_symbol2scm ("tie-column"));
-}
+
+
+/*
+  tie dir depends on what Tie_column does.
+*/
 
 void
-Tie_column::add_tie (Score_element*me,Score_element *s)
+Tie_column::add_tie (Grob*me,Grob *s)
 {
-  Pointer_group_interface g (me, "ties");
-  if (!g.count ())
+  if (!  Pointer_group_interface ::count (me, "ties"))
     {
       dynamic_cast<Spanner*> (me)->set_bound (LEFT, Tie::head (s,LEFT));
       dynamic_cast<Spanner*> (me)->set_bound (RIGHT, Tie::head (s,RIGHT));
     }
   
-  Pointer_group_interface (me, "ties").add_element (s);
+  Pointer_group_interface::add_grob (me, ly_symbol2scm ("ties"), s);
   s->add_dependency (me);
 }
 
 
 int
-tie_compare (Score_element* const & s1,
-            Score_element* const & s2)
+tie_compare (Grob* const & s1,
+            Grob* const & s2)
 {
-  return sign (Tie::position_f (s1) - Tie::position_f(s2));
+  return sign (Tie::position_f (s1) - Tie::position_f (s2));
 }
 
 /*
@@ -62,19 +54,26 @@ tie_compare (Score_element* const & s1,
   Ross forgets about the tie that is *on* the middle staff line. We
   assume it goes UP. (TODO: make me settable) */
 void
-Tie_column::set_directions (Score_element*me)
+Tie_column::set_directions (Grob*me)
 {
-  Link_array<Score_element> ties =
-    Pointer_group_interface__extract_elements (me, (Score_element*)0, "ties");
+  Link_array<Grob> ties =
+    Pointer_group_interface__extract_grobs (me, (Grob*)0, "ties");
 
+  for (int i = ties.size (); i--;)
+    if (Directional_element_interface::get (ties[i]))
+      ties.del (i);
+  
 
-  Direction d = Directional_element_interface::get (me);
+  if (!ties.size ())
+    return ;
+  
 
+  Direction d = Directional_element_interface::get (me);
   if (d)
     {
       for (int i = ties.size (); i--;)
        {
-         Score_element *  t = ties[i];
+         Grob *  t = ties[i];
          Directional_element_interface::set (t, d);
        }
       return;
@@ -82,19 +81,19 @@ Tie_column::set_directions (Score_element*me)
   
   if (ties.size () == 1)
     {
-      Score_element *  t = ties[0];      
+      Grob *  t = ties[0];      
       Directional_element_interface::set (t,Tie::get_default_dir (t));
       return;
     }
   
   ties.sort (tie_compare);
-  Directional_element_interface::set( ties[0], DOWN);
+  Directional_element_interface::set (ties[0], DOWN);
   ties.del (0);
   
-  Directional_element_interface ::set(ties.pop (), UP);
-  for (int i=ties.size(); i--; )
+  Directional_element_interface ::set (ties.pop (), UP);
+  for (int i=ties.size (); i--;)
     {
-      Score_element *  t = ties[i];
+      Grob *  t = ties[i];
       Real p = Tie::position_f (t);
       Direction d = (Direction) sign (p);
       if (!d)
@@ -104,10 +103,17 @@ Tie_column::set_directions (Score_element*me)
   
 }
 
-MAKE_SCHEME_CALLBACK(Tie_column,after_line_breaking);
+MAKE_SCHEME_CALLBACK (Tie_column,after_line_breaking,1);
 SCM
 Tie_column::after_line_breaking (SCM smob)
 {
-  set_directions (unsmob_element (smob));
+  set_directions (unsmob_grob (smob));
   return SCM_UNSPECIFIED;
 }
+
+
+
+ADD_INTERFACE (Tie_column,"tie-column-interface",
+  "that sets tie directions in a tied chord",
+  "direction");
+