+/*
+ 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 ();
+ DECLARE_GROB_INTERFACE();
+protected:
+ virtual void discretionary_processing ();
+ void copy_breakable_items ();
+ virtual void derived_mark () const;
+};
#endif