2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2015 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 "engraver.hh"
25 #include "duration.hh"
27 #include "output-def.hh"
29 #include "rhythmic-head.hh"
30 #include "staff-symbol-referencer.hh"
31 #include "stream-event.hh"
34 #include "translator.icc"
36 class Note_heads_engraver : public Engraver
38 vector<Stream_event *> note_evs_;
41 TRANSLATOR_DECLARATIONS (Note_heads_engraver);
44 void listen_note (Stream_event *);
45 void process_music ();
46 void stop_translation_timestep ();
49 Note_heads_engraver::Note_heads_engraver ()
54 Note_heads_engraver::listen_note (Stream_event *ev)
56 note_evs_.push_back (ev);
60 Note_heads_engraver::process_music ()
62 SCM c0 = get_property ("middleCPosition");
63 SCM layout_proc = get_property ("staffLineLayoutFunction");
65 for (vsize i = 0; i < note_evs_.size (); i++)
67 Stream_event *ev = note_evs_[i];
68 Item *note = make_item ("NoteHead", ev->self_scm ());
70 Pitch *pit = unsmob<Pitch> (ev->get_property ("pitch"));
72 #if 0 /* TODO: should have a mechanism to switch off these warnings. */
75 ev->origin ()->warning (_ ("NoteEvent without pitch"));
81 else if (ly_is_procedure (layout_proc))
83 SCM pitch = ev->get_property ("pitch");
84 pos = scm_to_int (scm_call_1 (layout_proc, pitch));
89 if (scm_is_number (c0))
90 pos += scm_to_int (c0);
92 note->set_property ("staff-position", scm_from_int (pos));
95 Shape note heads change on step of the scale.
97 SCM shape_vector = get_property ("shapeNoteStyles");
98 if (scm_is_vector (shape_vector))
100 SCM scm_tonic = get_property ("tonic");
102 if (unsmob<Pitch> (scm_tonic))
103 tonic = *unsmob<Pitch> (scm_tonic);
105 unsigned int delta = (pit->get_notename () - tonic.get_notename () + 7) % 7;
108 if (scm_c_vector_length (shape_vector) > delta
109 && scm_is_symbol (scm_vector_ref (shape_vector, scm_from_int (delta))))
110 style = scm_vector_ref (shape_vector, scm_from_int (delta));
111 if (scm_is_symbol (style))
112 note->set_property ("style", style);
118 Note_heads_engraver::stop_translation_timestep ()
124 Note_heads_engraver::boot ()
126 ADD_LISTENER (Note_heads_engraver, note);
129 ADD_TRANSLATOR (Note_heads_engraver,
131 "Generate note heads.",
138 "staffLineLayoutFunction ",