2 note-column.cc -- implement Note_column
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 #include <math.h> // ceil
10 #include "axis-group-interface.hh"
11 #include "note-column.hh"
14 #include "paper-def.hh"
15 #include "group-interface.hh"
16 #include "staff-symbol-referencer.hh"
18 #include "note-head.hh"
21 Note_column::rest_b (Grob*me)
23 return unsmob_grob (me->get_grob_property ("rest"));
27 Note_column::shift_compare (Grob *const &p1, Grob *const&p2)
29 SCM s1 = p1->get_grob_property ("horizontal-shift");
30 SCM s2 = p2->get_grob_property ("horizontal-shift");
32 int h1 = (gh_number_p (s1))? gh_scm2int (s1) :0;
33 int h2 = (gh_number_p (s2)) ? gh_scm2int (s2):0;
38 Note_column::stem_l (Grob*me)
40 SCM s = me->get_grob_property ("stem");
41 return unsmob_item (s);
45 Note_column::head_positions_interval (Grob *me)
51 SCM h = me->get_grob_property ("note-heads");
52 for (; gh_pair_p (h); h = ly_cdr (h))
54 Grob *se = unsmob_grob (ly_car (h));
56 int j = int (Staff_symbol_referencer::position_f (se));
57 iv.unite (Slice (j,j));
63 Note_column::dir (Grob* me)
65 Grob *stem = unsmob_grob (me->get_grob_property ("stem"));
66 if (stem && Stem::has_interface (stem))
67 return Stem::get_direction (stem);
68 else if (gh_pair_p (me->get_grob_property ("note-heads")))
69 return (Direction)sign (head_positions_interval (me).center ());
71 programming_error ("Note column without heads and stem!");
77 Note_column::set_stem (Grob*me,Grob * stem_l)
79 me->set_grob_property ("stem", stem_l->self_scm ());
80 me->add_dependency (stem_l);
81 Axis_group_interface::add_element (me, stem_l);
85 Note_column::add_head (Grob*me,Grob *h)
87 if (Rest::has_interface (h))
89 me->set_grob_property ("rest", h->self_scm ());
91 else if (Note_head::has_interface (h))
93 Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-heads"),h);
95 Axis_group_interface::add_element (me, h);
99 translate the rest symbols vertically by amount DY_I, but only if
100 they have no staff-position set.
103 Note_column::translate_rests (Grob*me,int dy_i)
105 Grob * r = unsmob_grob (me->get_grob_property ("rest"));
106 if (r && !gh_number_p (r->get_grob_property ("staff-position")))
108 r->translate_axis (dy_i * Staff_symbol_referencer::staff_space (r)/2.0, Y_AXIS);
114 Note_column::set_dotcol (Grob*me,Grob *d)
116 Axis_group_interface::add_element (me, d);
123 Note_column::first_head (Grob*me)
125 Grob * st = stem_l (me);
126 return st? Stem::first_head (st): 0;
130 Note_column::has_interface (Grob*me)
132 return me && me->has_interface (ly_symbol2scm ("note-column-interface"));
136 Return the first Accidentals grob that we find in a note-head.
139 Note_column::accidentals (Grob *me)
141 SCM heads = me->get_grob_property ("note-heads");
142 for (;gh_pair_p (heads); heads =gh_cdr (heads))
144 Grob * h = unsmob_grob (gh_car (heads));
145 Grob *a = h ? unsmob_grob(h->get_grob_property ("accidentals-grob")) : 0;
155 ADD_INTERFACE (Note_column,"note-column-interface",
156 "Stem and noteheads combined",
157 "arpeggio note-heads rest-collision rest horizontal-shift stem accidentals force-hshift");