/*
- item.hh -- declare Item
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ITEM_HH
#define ITEM_HH
-
-#include "boxes.hh"
-#include "string.hh"
-#include "score-elem.hh"
+#include "grob.hh"
/**
- a horizontally fixed size element of the score
-
- Item is the datastructure for printables whose width is known
- before the spacing is calculated
+ A horizontally fixed size element of the score.
- 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 &);
- void copy_breakable_items();
+ static Item *unsmob (SCM g) {
+ return dynamic_cast <Item *> (Grob::unsmob (g));
+ }
+ static bool is_smob (SCM g) {
+ return Grob::is_smob (g) && unsmob (g);
+ }
-};
+ virtual Grob *clone () const;
+ static bool is_non_musical (Grob *);
+ static bool break_visible (Grob *);
+
+ bool is_broken () const;
+ virtual 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_interval () const;
+ virtual Interval pure_height (Grob *ref, int start, int end);
+ virtual void cache_pure_height (Interval height);
+ DECLARE_GROB_INTERFACE ();
+protected:
+ virtual void discretionary_processing ();
+ void copy_breakable_items ();
+ virtual void derived_mark () const;
+
+ bool cached_pure_height_valid_;
+ Interval cached_pure_height_;
+};
+Interval_t<Moment> spanned_time_interval (Item *l, Item *r);
#endif