2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1998--2014 Jan Nieuwenhuizen <janneke@gnu.org>
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 "chord-name.hh"
22 #include "dimensions.hh"
23 #include "engraver.hh"
24 #include "font-interface.hh"
26 #include "output-def.hh"
28 #include "protected-scm.hh"
29 #include "stream-event.hh"
30 #include "text-interface.hh"
33 #include "translator.icc"
35 class Chord_name_engraver : public Engraver
37 TRANSLATOR_DECLARATIONS (Chord_name_engraver);
39 void stop_translation_timestep ();
40 void process_music ();
41 virtual void finalize ();
42 DECLARE_TRANSLATOR_LISTENER (note);
43 DECLARE_TRANSLATOR_LISTENER (rest);
46 vector<Stream_event *> notes_;
48 Stream_event *rest_event_;
52 Chord_name_engraver::finalize ()
56 Chord_name_engraver::Chord_name_engraver ()
63 Chord_name_engraver::process_music ()
67 SCM inversion = SCM_EOL;
68 SCM pitches = SCM_EOL;
72 SCM no_chord_markup = get_property ("noChordSymbol");
73 if (!Text_interface::is_markup (no_chord_markup))
75 markup = no_chord_markup;
82 Stream_event *inversion_event = 0;
83 for (vsize i = 0; i < notes_.size (); i++)
85 Stream_event *n = notes_[i];
86 SCM p = n->get_property ("pitch");
87 if (!unsmob_pitch (p))
90 if (n->get_property ("inversion") == SCM_BOOL_T)
95 else if (n->get_property ("bass") == SCM_BOOL_T)
98 pitches = scm_cons (p, pitches);
103 SCM oct = inversion_event->get_property ("octavation");
104 if (scm_is_number (oct))
106 Pitch *p = unsmob_pitch (inversion_event->get_property ("pitch"));
107 int octavation = scm_to_int (oct);
108 Pitch orig = p->transposed (Pitch (-octavation, 0, 0));
110 pitches = scm_cons (orig.smobbed_copy (), pitches);
113 programming_error ("inversion does not have original pitch");
116 pitches = scm_sort_list (pitches, Pitch::less_p_proc);
118 SCM name_proc = get_property ("chordNameFunction");
119 markup = scm_call_4 (name_proc, pitches, bass, inversion,
120 context ()->self_scm ());
125 SCM chord_as_scm = scm_cons (pitches, scm_cons (bass, inversion));
127 chord_name_ = make_item ("ChordName",
128 rest_event_ ? rest_event_->self_scm () : notes_[0]->self_scm ());
129 chord_name_->set_property ("text", markup);
131 SCM chord_changes = get_property ("chordChanges");
132 SCM last_chord = get_property ("lastChord");
133 if (to_boolean (chord_changes) && scm_is_pair (last_chord)
134 && ly_is_equal (chord_as_scm, last_chord))
135 chord_name_->set_property ("begin-of-line-visible", SCM_BOOL_T);
137 context ()->set_property ("lastChord", chord_as_scm);
140 IMPLEMENT_TRANSLATOR_LISTENER (Chord_name_engraver, note);
142 Chord_name_engraver::listen_note (Stream_event *ev)
144 notes_.push_back (ev);
147 IMPLEMENT_TRANSLATOR_LISTENER (Chord_name_engraver, rest);
149 Chord_name_engraver::listen_rest (Stream_event *ev)
151 ASSIGN_EVENT_ONCE (rest_event_, ev);
155 Chord_name_engraver::stop_translation_timestep ()
163 The READs description is not strictly accurate:
164 which properties are read depend on the chord naming function active.
166 ADD_TRANSLATOR (Chord_name_engraver,
168 "Catch note and rest events and generate the appropriate chordname.",
175 "chordNameExceptions "
179 "chordNameExceptions "