2 item.hh -- declare Item
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "grob-interface.hh"
16 A horizontally fixed size element of the score.
18 Item is the datastructure for printables whose width is known
19 before the spacing is calculated
21 class Item : public Grob
23 Drul_array<Item *> broken_to_drul_;
25 DECLARE_CLASSNAME(Item);
27 Item (SCM, Object_key const *);
28 Item (Item const &, int count);
30 virtual Grob *clone (int count) const;
32 static bool is_non_musical (Grob *);
33 bool is_broken () const;
34 bool pure_is_visible (int start, int end) const;
36 Direction break_status_dir () const;
38 Item *find_prebroken_piece (Direction) const;
39 Grob *find_broken_piece (System *) const;
40 virtual System *get_system () const;
41 virtual Paper_column *get_column () const;
42 virtual void handle_prebroken_dependencies ();
43 virtual Interval_t<int> spanned_rank_iv ();
44 DECLARE_GROB_INTERFACE();
46 virtual void discretionary_processing ();
47 void copy_breakable_items ();
48 virtual void derived_mark () const;