''

[lilypond.git] / lily / spanner.cc

diff --git a/lily/spanner.cc b/lily/spanner.cc
index 0b6573dd72c51d20dcf507fcc21034c044c2c55e..e45c74f7e2bf4c45b41dd935f00ccfa327f2fce4 100644 (file)
--- a/lily/spanner.cc
+++ b/lily/spanner.cc
@@ -16,8 +16,7 @@
 #include "molecule.hh"
 #include "paper-outputter.hh"
 #include "paper-column.hh"
-#include "line-of-score.hh"
-
+#include "system.hh"
 #include "group-interface.hh"
 
 void
@@ -199,6 +198,9 @@ Spanner::Spanner (SCM s)
 {
   spanned_drul_[LEFT]=0;
   spanned_drul_[RIGHT]=0;
+  Group_interface::add_thing (this, ly_symbol2scm ("interfaces"), ly_symbol2scm ("spanner-interface"));
+                    
+  
 }
 
 Spanner::Spanner (Spanner const &s)
@@ -302,8 +304,15 @@ Spanner::do_derived_mark ()
   return SCM_EOL;
 }
 
+
+/*
+  Set left or right bound to IT.
+
+  Warning: caller should ensure that subsequent calls put in ITems
+  that are left-to-right ordered.
+ */
 void
-add_bound_item (Spanner* sp, Item*it)
+add_bound_item (Spanner* sp, Grob*it)
 {
   if (!sp->get_bound (LEFT))
     sp->set_bound (LEFT, it);
@@ -406,3 +415,8 @@ unsmob_spanner (SCM s )
 {
   return dynamic_cast<Spanner*> (unsmob_grob (s));
 }
+
+ADD_INTERFACE(Spanner,
+             "spanner-interface",
+             "",
+             "minimum-length");