/*
item.hh -- declare Item
- source file of the LilyPond music typesetter
+ source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#ifndef ITEM_HH
#define ITEM_HH
-#include "glob.hh"
-#include "boxes.hh"
-#include "string.hh"
-#include "staff-elem.hh"
+
+#include "box.hh"
+#include "grob.hh"
+#include "drul-array.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.
-
*/
-class Item : public virtual Score_elem {
+class Item : public Grob
+{
+ Drul_array<Item*> broken_to_drul_;
+
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);
- /**
-
- @return the line where this is in;
-
- PRE
- Breaking calc has to be finished
- */
- Line_of_score * line_l() const;
+ VIRTUAL_COPY_CONS (Grob);
+ Item (SCM);
+ Item (Item const &);
+
+ static bool breakable_b (Grob *);
+ bool broken_b () 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 ();
+ static bool has_interface (Grob *);
+protected:
+ virtual void discretionary_processing ();
+ void copy_breakable_items ();
+ virtual SCM do_derived_mark () const;
};
+
#endif