2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "note-column.hh"
22 #include <cmath> // ceil
25 #include "accidental-placement.hh"
26 #include "axis-group-interface.hh"
27 #include "directional-element-interface.hh"
28 #include "international.hh"
30 #include "note-head.hh"
31 #include "output-def.hh"
32 #include "pointer-group-interface.hh"
34 #include "staff-symbol-referencer.hh"
39 TODO: figure out if we can prune this class. This is just an
40 annoying layer between (rest)collision & (note-head + stem)
44 Note_column::has_rests (Grob *me)
46 return unsmob_grob (me->get_object ("rest"));
50 Note_column::shift_less (Grob *const &p1, Grob *const &p2)
52 SCM s1 = p1->get_property ("horizontal-shift");
53 SCM s2 = p2->get_property ("horizontal-shift");
55 int h1 = (scm_is_number (s1)) ? scm_to_int (s1) : 0;
56 int h2 = (scm_is_number (s2)) ? scm_to_int (s2) : 0;
61 Note_column::get_stem (Grob *me)
63 SCM s = me->get_object ("stem");
64 return unsmob_item (s);
68 Note_column::head_positions_interval (Grob *me)
74 extract_grob_set (me, "note-heads", heads);
75 for (vsize i = 0; i < heads.size (); i++)
79 int j = Staff_symbol_referencer::get_rounded_position (se);
80 iv.unite (Slice (j, j));
86 Note_column::dir (Grob *me)
88 Grob *stem = unsmob_grob (me->get_object ("stem"));
89 if (stem && Stem::has_interface (stem))
90 return get_grob_direction (stem);
93 extract_grob_set (me, "note-heads", heads);
95 return (Direction)sign (head_positions_interval (me).center ());
98 programming_error ("note column without heads and stem");
103 Note_column::set_stem (Grob *me, Grob *stem)
105 me->set_object ("stem", stem->self_scm ());
106 Axis_group_interface::add_element (me, stem);
110 Note_column::get_rest (Grob *me)
112 return unsmob_grob (me->get_object ("rest"));
116 Note_column::add_head (Grob *me, Grob *h)
119 if (Rest::has_interface (h))
121 extract_grob_set (me, "note-heads", heads);
125 me->set_object ("rest", h->self_scm ());
127 else if (Note_head::has_interface (h))
129 if (unsmob_grob (me->get_object ("rest")))
131 Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-heads"), h);
135 me->warning (_ ("cannot have note heads and rests together on a stem"));
137 Axis_group_interface::add_element (me, h);
141 Note_column::first_head (Grob *me)
143 Grob *st = get_stem (me);
144 return st ? Stem::first_head (st) : 0;
148 Return the first AccidentalPlacement grob that we find in a note-head.
151 Note_column::accidentals (Grob *me)
153 extract_grob_set (me, "note-heads", heads);
155 for (vsize i = 0; i < heads.size (); i++)
158 acc = h ? unsmob_grob (h->get_object ("accidental-grob")) : 0;
166 if (Accidental_placement::has_interface (acc->get_parent (X_AXIS)))
167 return acc->get_parent (X_AXIS);
174 Note_column::dot_column (Grob *me)
176 extract_grob_set (me, "note-heads", heads);
177 for (vsize i = 0; i < heads.size (); i++)
179 Grob *dots = unsmob_grob (heads[i]->get_object ("dot"));
181 return dots->get_parent (X_AXIS);
188 Note_column::arpeggio (Grob *me)
190 return unsmob_grob (me->get_object ("arpeggio"));
193 /* If a note-column contains a cross-staff stem then
194 nc->extent (Y_AXIS, refp) will not consider the extent of the stem.
195 If you want the extent of the stem to be included (and you are safe
196 from any cross-staff issues) then call this function instead. */
198 Note_column::cross_staff_extent (Grob *me, Grob *refp)
200 Interval iv = me->extent (refp, Y_AXIS);
201 if (Grob *s = get_stem (me))
202 iv.unite (s->extent (refp, Y_AXIS));
207 ADD_INTERFACE (Note_column,
208 "Stem and noteheads combined.",