2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1999--2015 Glen Prideaux <glenprideaux@iname.com>,
5 Han-Wen Nienhuys <hanwen@xs4all.nl>,
6 Jan Nieuwenhuizen <janneke@gnu.org>
8 LilyPond is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 LilyPond is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
22 #include "engraver.hh"
23 #include "international.hh"
25 #include "pointer-group-interface.hh"
27 #include "stream-event.hh"
30 #include "translator.icc"
32 class Hyphen_engraver : public Engraver
35 Stream_event *finished_ev_;
38 Spanner *finished_hyphen_;
41 TRANSLATOR_DECLARATIONS (Hyphen_engraver);
45 void acknowledge_lyric_syllable (Grob_info);
46 void listen_hyphen (Stream_event *);
48 virtual void finalize ();
50 void stop_translation_timestep ();
51 void process_music ();
54 Hyphen_engraver::Hyphen_engraver ()
63 Hyphen_engraver::acknowledge_lyric_syllable (Grob_info i)
65 Item *item = i.item ();
68 hyphen_ = make_spanner ("LyricSpace", item->self_scm ());
71 hyphen_->set_bound (LEFT, item);
74 finished_hyphen_->set_bound (RIGHT, item);
78 Hyphen_engraver::listen_hyphen (Stream_event *ev)
80 ASSIGN_EVENT_ONCE (ev_, ev);
84 completize_hyphen (Spanner *sp)
86 if (!sp->get_bound (RIGHT))
88 extract_item_set (sp, "heads", heads);
90 sp->set_bound (RIGHT, heads.back ());
95 Hyphen_engraver::finalize ()
99 completize_hyphen (hyphen_);
101 if (!hyphen_->get_bound (RIGHT))
103 hyphen_->warning (_ ("removing unterminated hyphen"));
110 if (finished_hyphen_)
112 completize_hyphen (finished_hyphen_);
114 if (!finished_hyphen_->get_bound (RIGHT))
117 finished_hyphen_->warning (_ ("unterminated hyphen; removing"));
118 finished_hyphen_->suicide ();
120 finished_hyphen_ = 0;
125 Hyphen_engraver::process_music ()
128 hyphen_ = make_spanner ("LyricHyphen", ev_->self_scm ());
132 Hyphen_engraver::stop_translation_timestep ()
134 if (finished_hyphen_ && finished_hyphen_->get_bound (RIGHT))
136 finished_hyphen_ = 0;
140 if (finished_hyphen_ && hyphen_)
142 programming_error ("hyphen not finished yet");
143 finished_hyphen_ = 0;
149 finished_hyphen_ = hyphen_;
159 Hyphen_engraver::boot ()
161 ADD_LISTENER (Hyphen_engraver, hyphen);
162 ADD_ACKNOWLEDGER (Hyphen_engraver, lyric_syllable);
165 ADD_TRANSLATOR (Hyphen_engraver,
167 "Create lyric hyphens and distance constraints between words.",