source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (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 "score-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 virtual Score_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_;
-
- Item * broken_to_a_[2];
-
- // nobreak = 0, pre =1, post = 2
- int break_status_i()const;
- Item * find_prebroken_piece(PCol*)const;
- Item * find_prebroken_piece(Line_of_score*)const;
-
- virtual Item *item() { return this; }
- Item();
- Real hpos_f() const;
- DECLARE_MY_RUNTIME_TYPEINFO;
- virtual Line_of_score * line_l() const;
-protected:
- virtual void do_breakable_col_processing();
- virtual void handle_prebroken_dependencies();
- virtual void do_print()const;
+ 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