2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2008--2010 Han-Wen Nienhuys <hanwen@lilypond.org>
7 LilyPond is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 LilyPond is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
23 #include "engraver.hh"
25 #include "axis-group-interface.hh"
26 #include "directional-element-interface.hh"
28 #include "side-position-interface.hh"
30 #include "stream-event.hh"
32 #include "translator.icc"
34 class Dynamic_align_engraver : public Engraver
36 TRANSLATOR_DECLARATIONS (Dynamic_align_engraver);
37 DECLARE_TRANSLATOR_LISTENER (break_span);
38 DECLARE_ACKNOWLEDGER (note_column);
39 DECLARE_ACKNOWLEDGER (dynamic);
40 DECLARE_END_ACKNOWLEDGER (dynamic);
43 virtual void stop_translation_timestep ();
46 void create_line_spanner (Stream_event *cause);
48 vector<Spanner *> ended_;
49 vector<Spanner *> started_;
50 vector<Grob *> scripts_;
51 vector<Grob *> support_;
53 set<Spanner *> running_;
58 Dynamic_align_engraver::Dynamic_align_engraver ()
64 ADD_ACKNOWLEDGER (Dynamic_align_engraver, dynamic);
65 ADD_ACKNOWLEDGER (Dynamic_align_engraver, note_column);
66 ADD_END_ACKNOWLEDGER (Dynamic_align_engraver, dynamic);
69 Dynamic_align_engraver::create_line_spanner (Stream_event *event)
72 line_ = make_spanner ("DynamicLineSpanner",
73 event ? event->self_scm () : SCM_EOL);
77 Dynamic_align_engraver::acknowledge_end_dynamic (Grob_info info)
79 if (Spanner::has_interface (info.grob ()))
80 ended_.push_back (info.spanner ());
84 Dynamic_align_engraver::acknowledge_note_column (Grob_info info)
86 support_.push_back (info.grob ());
89 IMPLEMENT_TRANSLATOR_LISTENER (Dynamic_align_engraver, break_span);
91 Dynamic_align_engraver::listen_break_span (Stream_event *event)
93 if (event->in_event_class ("break-dynamic-span-event"))
98 Dynamic_align_engraver::acknowledge_dynamic (Grob_info info)
100 Stream_event *cause = info.event_cause ();
101 create_line_spanner (cause);
102 if (Spanner::has_interface (info.grob ()))
104 started_.push_back (info.spanner ());
106 If we are using text spans instead of hairpins and the line
107 is hidden, end the alignment spanner early: this allows dynamics
108 to be spaced individually instead of being linked together.
110 if (info.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-text-spanner-interface"))
111 && (info.grob ()->get_property ("style") == ly_symbol2scm ("none")))
114 else if (info.item ())
115 scripts_.push_back (info.item ());
117 info.grob ()->programming_error ("unknown dynamic grob");
119 Axis_group_interface::add_element (line_, info.grob ());
123 if (Direction d = to_dir (cause->get_property ("direction")))
124 set_grob_direction (line_, d);
129 Dynamic_align_engraver::stop_translation_timestep ()
131 for (vsize i = 0; i < started_.size (); i++)
132 running_.insert (started_[i]);
133 for (vsize i = 0; i < ended_.size (); i++)
135 Spanner *sp = ended_[i];
137 set<Spanner *>::iterator it = running_.find (sp);
138 if (it != running_.end ())
141 started_[i]->programming_error ("lost track of this dynamic spanner");
144 bool end = line_ && (running_.empty ()
150 && ((d == LEFT && !line_->get_bound (LEFT))
151 || (end && d == RIGHT && !line_->get_bound (RIGHT))))
153 vector<Spanner *> const &spanners
154 = (d == LEFT) ? started_ : ended_;
157 if (scripts_.size ())
159 else if (spanners.size ())
160 bound = spanners[0]->get_bound (d);
163 bound = unsmob_grob (get_property ("currentMusicalColumn"));
165 programming_error ("started DynamicLineSpanner but have no left bound");
168 line_->set_bound (d, bound);
171 while (flip (&d) != LEFT);
173 for (vsize i = 0; line_ && i < support_.size (); i++)
174 Side_position_interface::add_support (line_, support_[i]);
188 ADD_TRANSLATOR (Dynamic_align_engraver,
190 "Align hairpins and dynamic texts on a horizontal line.",
193 "DynamicLineSpanner ",
196 "currentMusicalColumn ",