/*
spanner.hh -- part of GNU LilyPond
- (c) 1996--1999 Han-Wen Nienhuys
+ (c) 1996--2004 Han-Wen Nienhuys
*/
#ifndef SPANNER_HH
#define SPANNER_HH
#include "lily-proto.hh"
-#include "score-element.hh"
+#include "grob.hh"
#include "drul-array.hh"
#include "rod.hh"
-struct Breaking_information
-{
- Line_of_score *line_l_;
- Spanner * broken_spanner_l_;
- Drul_array<Item*> bounds_;
- Breaking_information ()
- {
- line_l_ =0;
- broken_spanner_l_ =0;
- bounds_[LEFT] = bounds_[RIGHT] =0;
- }
-};
-
-class Axis_group_spanner;
/** A symbol which is attached between two columns. A spanner is a
symbol which spans across several columns, so its final appearance
can only be calculated after the breaking problem is solved.
Examples
- \begin{itemize}
- \item (de)crescendo
- \item slur
- \item beam
- \item bracket
- \end{itemize}
-
+ * (de)crescendo
+ * slur
+ * beam
+ * bracket
Spanner should know about the items which it should consider:
e.g. slurs should be steep enough to "enclose" all those items. This
length of stems of notes they encompass.
*/
-class Spanner : public virtual Score_element {
-public:
+class Spanner : public Grob {
Drul_array<Item*> spanned_drul_;
- Array<Breaking_information> broken_info_;
- void set_bounds (Direction d, Item*);
+ int break_index_;
+
+public:
+ DECLARE_SCHEME_CALLBACK (set_spacing_rods, (SCM));
+
+ Link_array<Spanner> broken_intos_;
+ int get_break_index () const;
+ // todo: move to somewhere else.
+ Real get_broken_left_end_align () const;
+ void substitute_one_mutable_property (SCM sym, SCM val) ;
+ bool fast_fubstitute_grob_list (SCM sym, SCM grob_list);
+ // TODO: make virtual and do this for Items as well.
+ Interval_t<int> spanned_rank_iv ();
+ void set_bound (Direction d, Grob*);
+ Item *get_bound (Direction d) const;
- Spanner ();
+ Spanner (SCM);
Spanner (Spanner const &);
bool broken_b () const;
+ void do_break ();
+ Real spanner_length () const;
- virtual Array<Rod> get_rods () const;
- virtual Array<Spring> get_springs () const;
- virtual Spanner* find_broken_piece (Line_of_score*) const;
+ static int compare (Spanner * const &,Spanner * const &);
+ virtual Grob* find_broken_piece (System*) const;
+ virtual SCM do_derived_mark () const;
+ static bool has_interface (Grob*);
+ virtual System *get_system () const;
protected:
void set_my_columns ();
- VIRTUAL_COPY_CONS(Score_element);
-
- /**
- this is virtual; for instance, Line_of_score overrides it.
- */
- virtual void break_into_pieces ();
-
- friend Axis_group_spanner; // UGH
- virtual void do_space_processing ();
- void handle_broken_dependents ();
+ VIRTUAL_COPY_CONS (Grob);
virtual void do_break_processing ();
- virtual Interval do_width () const;
- virtual void do_print () const;
- virtual Line_of_score*line_l () const;
};
+
+void add_bound_item (Spanner*, Grob*);
+///DECLARE_UNSMOB (Spanner, spanner);
+
+int broken_spanner_index (Spanner * sp);
#endif