X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fitem.hh;h=914d2ef7b8311b6c622ae0158d680b1846e9e9e5;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=e80d1f8fd476e354db08bc9323fffee92d767242;hpb=144cd434d02e6d90b2fb738eeee99119a7c5e1d2;p=lilypond.git

diff --git a/lily/include/item.hh b/lily/include/item.hh
index e80d1f8fd4..914d2ef7b8 100644
--- a/lily/include/item.hh
+++ b/lily/include/item.hh
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -31,15 +31,23 @@ class Item : public Grob
 {
   Drul_array<Item *> broken_to_drul_;
 
-  DECLARE_CLASSNAME(Item);
+  DECLARE_CLASSNAME (Item);
 public:
   Item (SCM);
   Item (Item const &);
 
+  static Item *unsmob (SCM g) {
+    return dynamic_cast <Item *> (Grob::unsmob (g));
+  }
+  static bool is_smob (SCM g) {
+    return Grob::is_smob (g) && unsmob (g);
+  }
+
   virtual Grob *clone () const;
 
   static bool is_non_musical (Grob *);
-  static bool break_visible(Grob *);
+  static bool break_visible (Grob *);
+
   bool is_broken () const;
   virtual bool pure_is_visible (int start, int end) const;
 
@@ -52,7 +60,8 @@ public:
   virtual void handle_prebroken_dependencies ();
   virtual Interval_t<int> spanned_rank_interval () const;
   virtual Interval pure_height (Grob *ref, int start, int end);
-  DECLARE_GROB_INTERFACE();
+  virtual void cache_pure_height (Interval height);
+  DECLARE_GROB_INTERFACE ();
 protected:
   virtual void discretionary_processing ();
   void copy_breakable_items ();