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 ()
65 if (!rest_event_ && !notes_.size ())
68 chord_name_ = make_item ("ChordName",
69 rest_event_ ? rest_event_->self_scm () : notes_[0]->self_scm ());
71 SCM maybe_markup = chord_name_->get_property_data ("text");
73 bool make_markup = !(Text_interface::is_markup (maybe_markup)
74 || ly_is_procedure (maybe_markup));
78 if (rest_event_ && !make_markup) { }
81 SCM no_chord_markup = get_property ("noChordSymbol");
82 if (!Text_interface::is_markup (no_chord_markup))
84 markup = no_chord_markup;
89 SCM inversion = SCM_EOL;
90 SCM pitches = SCM_EOL;
92 Stream_event *inversion_event = 0;
93 for (vsize i = 0; i < notes_.size (); i++)
95 Stream_event *n = notes_[i];
96 SCM p = n->get_property ("pitch");
97 if (!unsmob_pitch (p))
100 if (n->get_property ("inversion") == SCM_BOOL_T)
105 else if (n->get_property ("bass") == SCM_BOOL_T)
108 pitches = scm_cons (p, pitches);
113 SCM oct = inversion_event->get_property ("octavation");
114 if (scm_is_number (oct))
116 Pitch *p = unsmob_pitch (inversion_event->get_property ("pitch"));
117 int octavation = scm_to_int (oct);
118 Pitch orig = p->transposed (Pitch (-octavation, 0, 0));
120 pitches = scm_cons (orig.smobbed_copy (), pitches);
123 programming_error ("inversion does not have original pitch");
126 pitches = scm_sort_list (pitches, Pitch::less_p_proc);
128 SCM name_proc = get_property ("chordNameFunction");
130 markup = scm_call_4 (name_proc, pitches, bass, inversion,
131 context ()->self_scm ());
137 chord_name_->set_property ("text", markup);
138 else if (Text_interface::is_markup (maybe_markup))
139 markup = maybe_markup;
141 SCM chord_changes = get_property ("chordChanges");
142 SCM last_chord = get_property ("lastChord");
143 if (to_boolean (chord_changes) && scm_is_pair (last_chord)
144 && ly_is_equal (markup, last_chord))
145 chord_name_->set_property ("begin-of-line-visible", SCM_BOOL_T);
147 context ()->set_property ("lastChord", markup);
150 IMPLEMENT_TRANSLATOR_LISTENER (Chord_name_engraver, note);
152 Chord_name_engraver::listen_note (Stream_event *ev)
154 notes_.push_back (ev);
157 IMPLEMENT_TRANSLATOR_LISTENER (Chord_name_engraver, rest);
159 Chord_name_engraver::listen_rest (Stream_event *ev)
161 ASSIGN_EVENT_ONCE (rest_event_, ev);
165 Chord_name_engraver::stop_translation_timestep ()
173 The READs description is not strictly accurate:
174 which properties are read depend on the chord naming function active.
176 ADD_TRANSLATOR (Chord_name_engraver,
178 "Catch note and rest events and generate the appropriate chordname.",
185 "chordNameExceptions "
189 "chordNameExceptions "