+/*
+ item.hh -- declare Item
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+*/
#ifndef ITEM_HH
#define ITEM_HH
-#include "glob.hh"
+
#include "boxes.hh"
#include "string.hh"
-#include "staff-elem.hh"
+#include "score-elem.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
spacing calculation.
*/
-struct Item : Staff_elem {
- /// indirection to the column it is in
- PCol * pcol_l_;
-
- /* *************** */
- virtual Item *item() { return this; }
- Item();
- void do_print()const;
-
- NAME_MEMBERS(Item);
+class Item : public virtual Score_elem {
+public:
+ Link_array<Spanner> attached_span_l_arr_;
+ Drul_array<Item*> broken_to_drul_;
+
+ /// should be put in a breakable col.
+ bool breakable_b_;
+ int break_status_i_;
+ /// nobreak = 0, pre = -1, post = 1
+ int break_status_i() const;
+ Item * find_prebroken_piece (int) 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;
+
+ static int left_right_compare (Item const *, Item const*);
+protected:
+ virtual void do_unlink ();
+ virtual void do_junk_links();
+ virtual void do_breakable_col_processing();
+ virtual void handle_prebroken_dependencies();
+ virtual void do_print() const;
+ virtual bool linked_b() const;
+
+ void copy_breakable_items();
};
+
#endif