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/>.
24 #include "duration.hh"
25 #include "engraver.hh"
26 #include "note-column.hh"
27 #include "rhythmic-head.hh"
28 #include "side-position-interface.hh"
29 #include "script-interface.hh"
31 #include "stream-event.hh"
34 #include "translator.icc"
36 class Drum_notes_engraver : public Engraver
38 vector<Item *> scripts_;
39 vector<Stream_event *> events_;
42 TRANSLATOR_DECLARATIONS (Drum_notes_engraver);
45 void process_music ();
46 void acknowledge_stem (Grob_info);
47 void acknowledge_note_column (Grob_info);
48 void listen_note (Stream_event *);
49 void stop_translation_timestep ();
52 Drum_notes_engraver::Drum_notes_engraver ()
57 Drum_notes_engraver::listen_note (Stream_event *ev)
59 events_.push_back (ev);
63 Drum_notes_engraver::process_music ()
66 for (vsize i = 0; i < events_.size (); i++)
69 tab = get_property ("drumStyleTable");
71 Stream_event *ev = events_[i];
72 Item *note = make_item ("NoteHead", ev->self_scm ());
74 SCM drum_type = ev->get_property ("drum-type");
78 if (to_boolean (scm_hash_table_p (tab)))
79 defn = scm_hashq_ref (tab, drum_type, SCM_EOL);
81 if (scm_is_pair (defn))
83 SCM pos = scm_caddr (defn);
84 SCM style = scm_car (defn);
85 SCM script = scm_cadr (defn);
87 if (scm_is_integer (pos))
88 note->set_property ("staff-position", pos);
89 if (scm_is_symbol (style))
90 note->set_property ("style", style);
92 if (scm_is_string (script))
94 Item *p = make_item ("Script", ev->self_scm ());
95 make_script_from_event (p, context (), script,
98 p->set_parent (note, Y_AXIS);
99 Side_position_interface::add_support (p, note);
100 scripts_.push_back (p);
107 Drum_notes_engraver::acknowledge_stem (Grob_info inf)
109 for (vsize i = 0; i < scripts_.size (); i++)
111 Grob *e = scripts_[i];
113 if (to_dir (e->get_property ("side-relative-direction")))
114 e->set_object ("direction-source", inf.grob ()->self_scm ());
116 Side_position_interface::add_support (e, inf.grob ());
121 Drum_notes_engraver::acknowledge_note_column (Grob_info inf)
123 for (vsize i = 0; i < scripts_.size (); i++)
125 Grob *e = scripts_[i];
127 if (!e->get_parent (X_AXIS)
128 && Side_position_interface::get_axis (e) == Y_AXIS)
129 e->set_parent (inf.grob (), X_AXIS);
131 Side_position_interface::add_support (e, inf.grob ());
136 Drum_notes_engraver::stop_translation_timestep ()
144 Drum_notes_engraver::boot ()
146 ADD_LISTENER (Drum_notes_engraver, note);
147 ADD_ACKNOWLEDGER (Drum_notes_engraver, stem);
148 ADD_ACKNOWLEDGER (Drum_notes_engraver, note_column);
151 ADD_TRANSLATOR (Drum_notes_engraver,
153 "Generate drum note heads.",