Merge branch 'master' of ssh+git://gpercival@git.sv.gnu.org/srv/git/lilypond

[lilypond.git] / lily / include / item.hh

diff --git a/lily/include/item.hh b/lily/include/item.hh
index cae928961f4a525bbd6437d9796a75c887ee313d..fa5092e27ad38e60e805312bd97d292fe93859dd 100644 (file)
--- a/lily/include/item.hh
+++ b/lily/include/item.hh
@@ -1,33 +1,51 @@
+/*
+  item.hh -- declare Item
+
+  source file of the GNU LilyPond music typesetter
+
+  (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
 #ifndef ITEM_HH
 #define ITEM_HH
 
-#include "glob.hh"
-#include "boxes.hh"
-#include "string.hh"
-#include "staff-elem.hh"
+#include "grob.hh"
 
 /**
- a horizontally fixed size element of the score
+   A horizontally fixed size element of the score.
 
-  Item is the datastructure for printables whose width is known
-  before the spacing is calculated
-
-  NB. This doesn't mean an Item has to initialize the output field before
-  spacing calculation. 
-  
+   Item is the datastructure for printables whose width is known
+   before the spacing is calculated
 */
-class Item : public Staff_elem {
+class Item : public Grob
+{
+  Drul_array<Item *> broken_to_drul_;
+
+  DECLARE_CLASSNAME(Item);
 public:
-    /// indirection to the column it is in
-    PCol * pcol_l_;
-
-    /* *************** */
-    virtual Item *item() { return this; }
-    Item();
-    void do_print()const;
-    Real hpos_f() const;
-    NAME_MEMBERS(Item);
+  Item (SCM);
+  Item (Item const &);
+
+  virtual Grob *clone () const;
+
+  static bool is_non_musical (Grob *);
+  bool is_broken () const;
+  bool pure_is_visible (int start, int end) const;
+
+  Direction break_status_dir () const;
+
+  Item *find_prebroken_piece (Direction) const;
+  Grob *find_broken_piece (System *) const;
+  virtual System *get_system () const;
+  virtual Paper_column *get_column () const;
+  virtual void handle_prebroken_dependencies ();
+  virtual Interval_t<int> spanned_rank_iv () const;
+  DECLARE_GROB_INTERFACE();
+protected:
+  virtual void discretionary_processing ();
+  void copy_breakable_items ();
+  virtual void derived_mark () const;
 };
 
+Interval_t<Moment> spanned_time_interval (Item *l, Item *r);
 
 #endif