2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2000--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
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"
21 #include "translator-group.hh"
23 #include "repeated-music.hh"
25 #include "translator.icc"
30 -- set and reset repeatCommands, so Unfolded_repeat_iterator knows
31 where to set variables.
33 -- collect information passed by Unfolded_repeat_iterator for
34 Bar_engraver: writes whichBar property. (TODO: check for
35 interactions with timing engraver.)
37 class Repeat_acknowledge_engraver : public Engraver
41 TRANSLATOR_DECLARATIONS (Repeat_acknowledge_engraver);
43 void start_translation_timestep ();
44 void process_music ();
45 virtual void initialize ();
49 Repeat_acknowledge_engraver::initialize ()
51 context ()->set_property ("repeatCommands", SCM_EOL);
54 Repeat_acknowledge_engraver::Repeat_acknowledge_engraver ()
59 Repeat_acknowledge_engraver::start_translation_timestep ()
62 Context *tr = context ()->where_defined (ly_symbol2scm ("repeatCommands"), &rc);
66 tr->set_property ("repeatCommands", SCM_EOL);
70 Repeat_acknowledge_engraver::process_music ()
73 At the start of a piece, we don't print any repeat bars.
75 if (!now_mom ().main_part_)
78 SCM cs = get_property ("repeatCommands");
84 bool volta_found = false;
85 while (scm_is_pair (cs))
87 SCM command = scm_car (cs);
88 if (command == ly_symbol2scm ("start-repeat"))
90 else if (command == ly_symbol2scm ("end-repeat"))
92 else if (command == ly_symbol2scm ("segno-display"))
94 else if (scm_is_pair (command) && scm_car (command) == ly_symbol2scm ("volta"))
100 Select which bar type to set
104 if (end) // { segno, start, end }
105 s = robust_scm2string (get_property ("doubleRepeatSegnoType"), ":|S|:");
106 else // { segno, start }
107 s = robust_scm2string (get_property ("startRepeatSegnoType"), ".S|:");
108 else if (end) // { segno, end }
109 s = robust_scm2string (get_property ("endRepeatSegnoType"), ":|S");
111 s = robust_scm2string (get_property ("segnoType"), "S");
113 if (end) // { start, end }
114 s = robust_scm2string (get_property ("doubleRepeatType"), ":|:");
116 s = robust_scm2string (get_property ("startRepeatType"), "|:");
117 else if (end) // { end }
118 s = robust_scm2string (get_property ("endRepeatType"), ":|");
121 TODO: line breaks might be allowed if we set whichBar to "".
125 We only set the barline if we wouldn't overwrite a previously set
128 SCM wb = get_property ("whichBar");
129 SCM db = get_property ("defaultBarType");
130 if (!scm_is_string (wb) || ly_is_equal (db, wb))
132 if (s != "" || (volta_found && !scm_is_string (wb)))
133 context ()->set_property ("whichBar", ly_string2scm (s));
137 ADD_TRANSLATOR (Repeat_acknowledge_engraver,
139 "Acknowledge repeated music, and convert the contents of"
140 " @code{repeatCommands} into an appropriate setting for"
150 "doubleRepeatSegnoType "
151 "startRepeatSegnoType "
152 "endRepeatSegnoType "