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/>.
20 #include "engraver.hh"
22 #include "international.hh"
23 #include "note-column.hh"
24 #include "pointer-group-interface.hh"
25 #include "side-position-interface.hh"
27 #include "stream-event.hh"
29 #include "translator.icc"
31 class Text_spanner_engraver : public Engraver
34 TRANSLATOR_DECLARATIONS (Text_spanner_engraver);
36 virtual void finalize ();
37 DECLARE_TRANSLATOR_LISTENER (text_span);
38 DECLARE_ACKNOWLEDGER (note_column);
39 void stop_translation_timestep ();
40 void process_music ();
45 Stream_event *current_event_;
46 Drul_array<Stream_event *> event_drul_;
50 Text_spanner_engraver::Text_spanner_engraver ()
55 event_drul_.set (0, 0);
59 Text_spanner_engraver::listen_text_span (Stream_event *ev)
61 Direction d = to_dir (ev->get_property ("span-direction"));
62 ASSIGN_EVENT_ONCE (event_drul_[d], ev);
66 Text_spanner_engraver::process_music ()
68 if (event_drul_[STOP])
71 event_drul_[STOP]->origin ()->warning (_ ("cannot find start of text spanner"));
75 announce_end_grob (finished_, SCM_EOL);
81 if (event_drul_[START])
84 event_drul_[START]->origin ()->warning (_ ("already have a text spanner"));
87 current_event_ = event_drul_[START];
88 span_ = make_spanner ("TextSpanner", event_drul_[START]->self_scm ());
89 if (Direction d = to_dir (current_event_->get_property ("direction")))
90 span_->set_property ("direction", scm_from_int (d));
92 Side_position_interface::set_axis (span_, Y_AXIS);
93 event_drul_[START] = 0;
99 Text_spanner_engraver::typeset_all ()
103 if (!finished_->get_bound (RIGHT))
105 Grob *e = unsmob<Grob> (get_property ("currentMusicalColumn"));
106 finished_->set_bound (RIGHT, e);
113 Text_spanner_engraver::stop_translation_timestep ()
115 if (span_ && !span_->get_bound (LEFT))
117 Grob *e = unsmob<Grob> (get_property ("currentMusicalColumn"));
118 span_->set_bound (LEFT, e);
122 event_drul_.set (0, 0);
126 Text_spanner_engraver::finalize ()
131 current_event_->origin ()->warning (_ ("unterminated text spanner"));
138 Text_spanner_engraver::acknowledge_note_column (Grob_info info)
142 Pointer_group_interface::add_grob (span_,
143 ly_symbol2scm ("note-columns"),
145 if (!span_->get_bound (LEFT))
146 add_bound_item (span_, info.grob ());
150 Pointer_group_interface::add_grob (finished_,
151 ly_symbol2scm ("note-columns"),
153 if (!finished_->get_bound (RIGHT))
154 add_bound_item (finished_, info.grob ());
160 Text_spanner_engraver::boot ()
162 ADD_LISTENER (Text_spanner_engraver, text_span);
163 ADD_ACKNOWLEDGER (Text_spanner_engraver, note_column);
166 ADD_TRANSLATOR (Text_spanner_engraver,
168 "Create text spanner from an event.",
174 "currentMusicalColumn ",