2 stem.hh -- declare Stem
4 (c) 1996--1999 Han-Wen Nienhuys
12 #include "molecule.hh"
13 #include "staff-symbol-referencer.hh"
14 #include "directional-element.hh"
15 #include "stem-info.hh"
17 /**the rule attached to the ball.
23 \item up/down position.
26 should move beam_{left, right} into Beam
30 Stem size depends on flag.
34 beam_dir: direction of the beam (int)
36 dir_force: is direction explicitely specified? (bool)
38 /// how many abbrev beam don't reach stem?
44 // todo: remove baseclass Staff_symbol_referencer, since stem
45 // can be across a staff.
46 class Stem : public Item, public Staff_symbol_referencer,
47 public Directional_element
50 /**extent of the stem (positions).
51 fractional, since Beam has to adapt them.
53 Drul_array<Real> yextent_drul_;
58 /// log of the duration. Eg. 4 -> 16th note -> 2 flags
62 don't print flag when in beam.
63 our beam, for aligning abbrev flags
65 Beam* beam_l () const;
66 Note_head * first_head () const;
68 Drul_array<int> beams_i_drul_;
71 /// ensure that this Stem also encompasses the Notehead #n#
72 void add_head (Rhythmic_head*n);
73 Stem_info get_info () const;
76 Real chord_start_f () const;
80 void do_print() const;
81 void set_stemend (Real);
82 Direction get_default_dir() const;
84 int get_center_distance(Direction) const;
86 void set_default_stemlen();
87 void set_default_extents();
90 Real stem_length_f() const;
91 Real stem_end_f() const;
92 Real stem_begin_f() const;
93 Real note_delta_f () const;
95 bool invisible_b() const;
97 /// heads that the stem encompasses (positions)
98 Interval_t<int> head_positions() const;
101 Molecule flag () const;
103 virtual void do_pre_processing();
104 static Interval dim_callback (Dimension_cache const*);
105 virtual Molecule* do_brew_molecule_p() const;
107 void set_spacing_hints () ;