X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fitem.hh;h=07f1261a525c72fca408cd4085d26c0df80da42d;hb=12b68a3172f040e768b7d229aa14fb4838e75742;hp=0838c00a49be7e85659245b3b1b392aa9f478729;hpb=38367909027cad1f36c4dde2f7ceaab22b3290aa;p=lilypond.git

diff --git a/lily/include/item.hh b/lily/include/item.hh
index 0838c00a49..07f1261a52 100644
--- a/lily/include/item.hh
+++ b/lily/include/item.hh
@@ -1,9 +1,20 @@
 /*
-  item.hh -- declare Item
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1997--2007 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
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 #ifndef ITEM_HH
 #define ITEM_HH
@@ -20,7 +31,7 @@ class Item : public Grob
 {
   Drul_array<Item *> broken_to_drul_;
 
-  DECLARE_CLASSNAME(Item);
+  DECLARE_CLASSNAME (Item);
 public:
   Item (SCM);
   Item (Item const &);
@@ -28,9 +39,10 @@ public:
   virtual Grob *clone () const;
 
   static bool is_non_musical (Grob *);
-  static bool break_visible(Grob *);
+  static bool break_visible (Grob *);
+
   bool is_broken () const;
-  bool pure_is_visible (int start, int end) const;
+  virtual bool pure_is_visible (int start, int end) const;
 
   Direction break_status_dir () const;
 
@@ -40,11 +52,15 @@ public:
   virtual Paper_column *get_column () const;
   virtual void handle_prebroken_dependencies ();
   virtual Interval_t<int> spanned_rank_interval () const;
-  DECLARE_GROB_INTERFACE();
+  virtual Interval pure_y_extent (Grob *ref, int start, int end);
+  virtual void cache_pure_height (Interval height);
 protected:
   virtual void discretionary_processing ();
   void copy_breakable_items ();
   virtual void derived_mark () const;
+
+  bool cached_pure_height_valid_;
+  Interval cached_pure_height_;
 };
 
 Interval_t<Moment> spanned_time_interval (Item *l, Item *r);