-/*
- spacing-spanner.hh -- declare Spacing_spanner
-
+/*
+ spacing-spanner.hh -- declare Spacing spanner
+
source file of the GNU LilyPond music typesetter
-
- (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+
+ (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
#ifndef SPACING_SPANNER_HH
#define SPACING_SPANNER_HH
-#include "spanner.hh"
+#include "lily-proto.hh"
+#include "lily-guile.hh"
+#include "rational.hh"
-class Spacing_spanner : public Spanner
+struct Spacing_options
+{
+ bool packed_;
+ bool stretch_uniformly_;
+ bool float_nonmusical_columns_;
+ Rational global_shortest_;
+ Real increment_;
+ Real shortest_duration_space_;
+
+ void init ();
+ void init_from_grob (Grob *me);
+ Real get_duration_space (Moment d, bool *) const;
+};
+
+/*
+ TODO: prune to public interface.
+*/
+class Spacing_spanner
{
public:
- Spacing_spanner ();
- VIRTUAL_COPY_CONS(Score_element);
- Score_column *scol (int) const;
- Array<Spring> do_measure (int,int) const;
- int col_count () const;
-protected:
- virtual Array<Spring> get_springs () const;
-
- Real stem_dir_correction (Score_column*,Score_column*) const;
- Real default_bar_spacing (Score_column*,Score_column*,Moment) const;
- Real note_spacing (Score_column*,Score_column*,Moment) const;
+ static void generate_pair_spacing (Grob *me,
+ Paper_column *l, Paper_column *r,
+ Paper_column *nextr,
+ Spacing_options const *options);
+ static void standard_breakable_column_spacing (Grob *me, Item *l, Item *r,
+ Real *fixed, Real *space,
+ Spacing_options const *);
+ static Real default_bar_spacing (Grob *, Grob *, Grob *, Moment);
+ static Real note_spacing (Grob *, Grob *, Grob *, Spacing_options const *, bool *);
+ static Real get_duration_space (Moment dur, Spacing_options const *, bool *);
+ static Rational find_shortest (Grob *, Link_array<Grob> const &);
+ static Rational effective_shortest_duration (Grob *me, Link_array<Grob> const &all);
+ static void breakable_column_spacing (Grob *, Item *l, Item *r, Spacing_options const *);
+ static void prune_loose_columns (Grob *, Link_array<Grob> *cols, Spacing_options const *);
+ static void set_explicit_neighbor_columns (Link_array<Grob> const &cols);
+ static void set_implicit_neighbor_columns (Link_array<Grob> const &cols);
+ static void generate_springs (Grob *me, Link_array<Grob> const &cols, Spacing_options const *);
+ static void musical_column_spacing (Grob *, Item *, Item *, Spacing_options const *);
+ DECLARE_SCHEME_CALLBACK (set_springs, (SCM));
+ static bool has_interface (Grob *);
};
#endif /* SPACING_SPANNER_HH */
-