2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2000--2015 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/>.
21 C&P from text-spanner.cc
23 - todo: ending should be detected automatically? a new note
24 automatically is the end of the trill?
27 #include "engraver.hh"
29 #include "international.hh"
30 #include "note-column.hh"
31 #include "pointer-group-interface.hh"
32 #include "side-position-interface.hh"
33 #include "stream-event.hh"
36 #include "translator.icc"
38 class Trill_spanner_engraver : public Engraver
41 TRANSLATOR_DECLARATIONS (Trill_spanner_engraver);
43 virtual void finalize ();
44 void listen_trill_span (Stream_event *);
45 void acknowledge_note_column (Grob_info);
47 void stop_translation_timestep ();
48 void process_music ();
53 Stream_event *current_event_;
54 Drul_array<Stream_event *> event_drul_;
58 Trill_spanner_engraver::Trill_spanner_engraver ()
63 event_drul_.set (0, 0);
67 Trill_spanner_engraver::listen_trill_span (Stream_event *ev)
69 Direction d = to_dir (ev->get_property ("span-direction"));
70 ASSIGN_EVENT_ONCE (event_drul_[d], ev);
74 Trill_spanner_engraver::acknowledge_note_column (Grob_info info)
78 Pointer_group_interface::add_grob (span_,
79 ly_symbol2scm ("note-columns"),
81 if (!span_->get_bound (LEFT))
82 add_bound_item (span_, info.grob ());
86 Pointer_group_interface::add_grob (finished_, ly_symbol2scm ("note-columns"),
88 if (!finished_->get_bound (RIGHT))
89 add_bound_item (finished_, info.grob ());
94 Trill_spanner_engraver::process_music ()
97 && (event_drul_[STOP] || event_drul_[START]))
99 Stream_event *ender = event_drul_[STOP];
101 ender = event_drul_[START];
103 announce_end_grob (finished_, ender->self_scm ());
108 if (event_drul_[START])
110 current_event_ = event_drul_[START];
111 span_ = make_spanner ("TrillSpanner", event_drul_[START]->self_scm ());
112 Side_position_interface::set_axis (span_, Y_AXIS);
117 Trill_spanner_engraver::typeset_all ()
121 if (!finished_->get_bound (RIGHT))
123 Grob *e = unsmob<Grob> (get_property ("currentMusicalColumn"));
124 finished_->set_bound (RIGHT, e);
131 Trill_spanner_engraver::stop_translation_timestep ()
133 if (span_ && !span_->get_bound (LEFT))
135 Grob *e = unsmob<Grob> (get_property ("currentMusicalColumn"));
136 span_->set_bound (LEFT, e);
140 event_drul_.set (0, 0);
144 Trill_spanner_engraver::finalize ()
149 Grob *e = unsmob<Grob> (get_property ("currentCommandColumn"));
150 span_->set_bound (RIGHT, e);
156 Trill_spanner_engraver::boot ()
158 ADD_LISTENER (Trill_spanner_engraver, trill_span);
159 ADD_ACKNOWLEDGER (Trill_spanner_engraver, note_column);
162 ADD_TRANSLATOR (Trill_spanner_engraver,
164 "Create trill spanner from an event.",
170 "currentCommandColumn "
171 "currentMusicalColumn ",