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"
38 class Drum_notes_engraver : public Engraver
40 vector<Item *> scripts_;
41 vector<Stream_event *> events_;
44 TRANSLATOR_DECLARATIONS (Drum_notes_engraver);
47 void process_music ();
48 DECLARE_ACKNOWLEDGER (stem);
49 DECLARE_ACKNOWLEDGER (note_column);
50 DECLARE_TRANSLATOR_LISTENER (note);
51 void stop_translation_timestep ();
54 Drum_notes_engraver::Drum_notes_engraver ()
58 IMPLEMENT_TRANSLATOR_LISTENER (Drum_notes_engraver, note);
60 Drum_notes_engraver::listen_note (Stream_event *ev)
62 events_.push_back (ev);
66 Drum_notes_engraver::process_music ()
69 for (vsize i = 0; i < events_.size (); i++)
72 tab = get_property ("drumStyleTable");
74 Stream_event *ev = events_[i];
75 Item *note = make_item ("NoteHead", ev->self_scm ());
77 SCM drum_type = ev->get_property ("drum-type");
81 if (to_boolean (scm_hash_table_p (tab)))
82 defn = scm_hashq_ref (tab, drum_type, SCM_EOL);
84 if (scm_is_pair (defn))
86 SCM pos = scm_caddr (defn);
87 SCM style = scm_car (defn);
88 SCM script = scm_cadr (defn);
90 if (scm_is_integer (pos))
91 note->set_property ("staff-position", pos);
92 if (scm_is_symbol (style))
93 note->set_property ("style", style);
95 if (scm_is_string (script))
97 Item *p = make_item ("Script", ev->self_scm ());
98 make_script_from_event (p, context (), script,
101 p->set_parent (note, Y_AXIS);
102 Side_position_interface::add_support (p, note);
103 scripts_.push_back (p);
110 Drum_notes_engraver::acknowledge_stem (Grob_info inf)
112 for (vsize i = 0; i < scripts_.size (); i++)
114 Grob *e = scripts_[i];
116 if (to_dir (e->get_property ("side-relative-direction")))
117 e->set_object ("direction-source", inf.grob ()->self_scm ());
119 Side_position_interface::add_support (e, inf.grob ());
124 Drum_notes_engraver::acknowledge_note_column (Grob_info inf)
126 for (vsize i = 0; i < scripts_.size (); i++)
128 Grob *e = scripts_[i];
130 if (!e->get_parent (X_AXIS)
131 && Side_position_interface::get_axis (e) == Y_AXIS)
132 e->set_parent (inf.grob (), X_AXIS);
134 Side_position_interface::add_support (e, inf.grob ());
139 Drum_notes_engraver::stop_translation_timestep ()
145 ADD_ACKNOWLEDGER (Drum_notes_engraver, stem);
146 ADD_ACKNOWLEDGER (Drum_notes_engraver, note_column);
148 ADD_TRANSLATOR (Drum_notes_engraver,
150 "Generate drum note heads.",