source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#ifndef ITEM_HH
#define ITEM_HH
-#include "boxes.hh"
+#include "box.hh"
#include "string.hh"
-#include "score-elem.hh"
+#include "score-element.hh"
+#include "drul-array.hh"
+#include "protected-scm.hh"
/**
A horizontally fixed size element of the score.
NB. This doesn't mean an Item has to initialize the output field before
spacing calculation.
-*/
-class Item : public virtual Score_elem {
+
+
+ @signature
+ visibility_lambda :: int -> (bool . bool)
+
+ @in
+ break direction
+
+ @out
+ (transparent, empty) cons
+
+ */
+class Item : public virtual Score_element {
+ void do_break ();
+ void try_visibility_lambda ();
+ Drul_array<Item*> broken_to_drul_;
+
+
public:
- /// indirection to the column it is in
- PCol * pcol_l_;
-
- Item * broken_to_a_[2];
-
- /// 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 (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;
+
+ /// I am really to be broken?
+ bool breakable_b () const;
+ bool broken_b () const;
+ bool broken_original_b () const;
+
+ Direction break_status_dir () const;
+
+ Item * find_broken_piece (Direction) const;
+ Score_element * find_broken_piece (Line_of_score*) const;
+
+ Item();
+ Real hpos_f() const;
+
+ virtual Line_of_score * line_l() const;
+ virtual Paper_column * column_l () const;
+ static int left_right_compare (Item const *, Item const*);
+
+ Item (Item const &);
protected:
- virtual void do_breakable_col_processing();
- virtual void handle_prebroken_dependencies();
- virtual void do_print()const;
+ virtual void do_breakable_col_processing();
- void copy_breakable_items();
+ void copy_breakable_items();
};