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 virtual void derived_mark () const;
43 DECLARE_TRANSLATOR_LISTENER (note);
44 DECLARE_TRANSLATOR_LISTENER (rest);
47 vector<Stream_event *> notes_;
50 Stream_event *rest_event_;
54 Chord_name_engraver::finalize ()
59 Chord_name_engraver::derived_mark () const
61 scm_gc_mark (last_chord_);
64 Chord_name_engraver::Chord_name_engraver ()
67 last_chord_ = SCM_EOL;
72 Chord_name_engraver::process_music ()
74 if (!rest_event_ && !notes_.size ())
77 chord_name_ = make_item ("ChordName",
78 rest_event_ ? rest_event_->self_scm () : notes_[0]->self_scm ());
80 SCM maybe_markup = chord_name_->get_property_data ("text");
82 bool make_markup = !(Text_interface::is_markup (maybe_markup)
83 || ly_is_procedure (maybe_markup));
87 if (rest_event_ && !make_markup) { }
90 SCM no_chord_markup = get_property ("noChordSymbol");
91 if (!Text_interface::is_markup (no_chord_markup))
93 markup = no_chord_markup;
98 SCM inversion = SCM_EOL;
99 SCM pitches = SCM_EOL;
101 Stream_event *inversion_event = 0;
102 for (vsize i = 0; i < notes_.size (); i++)
104 Stream_event *n = notes_[i];
105 SCM p = n->get_property ("pitch");
106 if (!unsmob_pitch (p))
109 if (n->get_property ("inversion") == SCM_BOOL_T)
114 else if (n->get_property ("bass") == SCM_BOOL_T)
117 pitches = scm_cons (p, pitches);
122 SCM oct = inversion_event->get_property ("octavation");
123 if (scm_is_number (oct))
125 Pitch *p = unsmob_pitch (inversion_event->get_property ("pitch"));
126 int octavation = scm_to_int (oct);
127 Pitch orig = p->transposed (Pitch (-octavation, 0, 0));
129 pitches = scm_cons (orig.smobbed_copy (), pitches);
132 programming_error ("inversion does not have original pitch");
135 pitches = scm_sort_list (pitches, Pitch::less_p_proc);
137 SCM name_proc = get_property ("chordNameFunction");
139 markup = scm_call_4 (name_proc, pitches, bass, inversion,
140 context ()->self_scm ());
146 chord_name_->set_property ("text", markup);
147 else if (Text_interface::is_markup (maybe_markup))
148 markup = maybe_markup;
150 SCM chord_changes = get_property ("chordChanges");
151 if (to_boolean (chord_changes) && scm_is_pair (last_chord_)
152 && ly_is_equal (markup, last_chord_))
153 chord_name_->set_property ("begin-of-line-visible", SCM_BOOL_T);
155 last_chord_ = markup;
158 IMPLEMENT_TRANSLATOR_LISTENER (Chord_name_engraver, note);
160 Chord_name_engraver::listen_note (Stream_event *ev)
162 notes_.push_back (ev);
165 IMPLEMENT_TRANSLATOR_LISTENER (Chord_name_engraver, rest);
167 Chord_name_engraver::listen_rest (Stream_event *ev)
169 ASSIGN_EVENT_ONCE (rest_event_, ev);
173 Chord_name_engraver::stop_translation_timestep ()
181 The READs description is not strictly accurate:
182 which properties are read depend on the chord naming function active.
184 ADD_TRANSLATOR (Chord_name_engraver,
186 "Catch note and rest events and generate the appropriate chordname.",
193 "chordNameExceptions "
197 "chordNameExceptions "