/*
stem.hh -- declare Stem
- (c) 1996--1999 Han-Wen Nienhuys
+ (c) 1996--2004 Han-Wen Nienhuys
*/
#ifndef STEM_HH
#define STEM_HH
-#include "item.hh"
-#include "array.hh"
-#include "moment.hh"
-#include "molecule.hh"
-#include "staff-symbol-referencer.hh"
-#include "directional-element.hh"
-/**the rule attached to the ball.
- takes care of:
+#include "lily-proto.hh"
+#include "lily-guile.hh"
+#include "stem-info.hh"
+#include "drul-array.hh"
- \begin{itemize}
- \item the rule
- \item the flag
- \item up/down position.
- \end{itemize}
-
- should move beam_{left, right} into Beam
-
- TODO.
-
- Stem size depends on flag.
-
- elt properties:
-
- beam_dir: direction of the beam (int)
-
- dir_force: is direction explicitely specified? (bool)
-
- /// how many abbrev beam don't reach stem?
- int beam_gap_i_;
-
-
-
- */
-// todo: remove baseclass Staff_symbol_referencer, since stem
-// can be across a staff.
-class Stem : public Item, public Staff_symbol_referencer,
- public Directional_element
+class Stem
{
-
- /**extent of the stem (positions).
- fractional, since Beam has to adapt them.
- */
- Drul_array<Real> yextent_drul_;
-
public:
-
-
- /// log of the duration. Eg. 4 -> 16th note -> 2 flags
- int flag_i_;
-
- /**
- don't print flag when in beam.
- our beam, for aligning abbrev flags
- */
- Beam* beam_l () const;
- Note_head * first_head () const;
-
- Drul_array<int> beams_i_drul_;
- Stem ();
-
- /// ensure that this Stem also encompasses the Notehead #n#
- void add_head (Rhythmic_head*n);
- void beamify ();
-
- Real hpos_f () const;
- Real chord_start_f () const;
+ static Array<int> note_head_positions (Grob *);
+ static int duration_log (Grob *);
+ static void set_beaming (Grob *, int, Direction d);
+ static Grob *get_beam (Grob *);
+ static Grob *first_head (Grob *);
+ static Grob *last_head (Grob *);
+ static Drul_array<Grob*> extremal_heads (Grob *);
+ static Grob *support_head (Grob *) ;
+ static void add_head (Grob *me, Grob *n);
+ static Stem_info get_stem_info (Grob *);
+ static Real chord_start_y (Grob *);
+ static Direction get_direction (Grob *);
+ static void set_stemend (Grob *,Real);
+ static Direction get_default_dir (Grob *);
+ static Slice Stem::beam_multiplicity (Grob *);
+ static Real thickness (Grob*);
+ static int head_count (Grob *);
+ static bool invisible_b (Grob *) ;
+ static Interval head_positions (Grob *);
+ static Real get_default_stem_end_position (Grob*me);
+ static void position_noteheads (Grob *);
+ static Real stem_end_position (Grob *);
+ static Molecule flag (Grob *);
+ static bool has_interface (Grob *);
+ static void set_spacing_hints (Grob *);
- int type_i () const;
-
- void do_print() const;
- void set_stemend (Real);
- Direction get_default_dir() const;
-
- int get_center_distance(Direction) const;
-
- void set_default_stemlen();
- void set_default_extents();
- void set_noteheads();
-
- Real stem_length_f() const;
- Real stem_end_f() const;
- Real stem_begin_f() const;
- Real note_delta_f () const;
-
- bool invisible_b() const;
-
- /// heads that the stem encompasses (positions)
- Interval_t<int> head_positions() const;
-
-protected:
- Molecule flag () const;
-
- virtual void do_pre_processing();
- static Interval dim_callback (Dimension_cache const*);
- virtual Molecule* do_brew_molecule_p() const;
-
- void set_spacing_hints () ;
+ DECLARE_SCHEME_CALLBACK (brew_molecule, (SCM));
+ DECLARE_SCHEME_CALLBACK (off_callback, (SCM element, SCM axis));
+ DECLARE_SCHEME_CALLBACK (before_line_breaking, (SCM));
+ DECLARE_SCHEME_CALLBACK (dim_callback, (SCM smob, SCM axis));
+ DECLARE_SCHEME_CALLBACK (height, (SCM, SCM));
+
+private:
+ static void calc_stem_info (Grob *);
};
#endif