2 repeat-acknowledge-engraver.cc -- implement Repeat_acknowledge_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "translator-group.hh"
11 #include "repeated-music.hh"
17 -- set and reset repeatCommands, so Unfolded_repeat_iterator knows
18 where to set variables.
20 -- collect information passed by Unfolded_repeat_iterator for
21 Bar_engraver: writes whichBar property. (TODO: check for
22 interactions with timing engraver.)
25 class Repeat_acknowledge_engraver : public Engraver
28 TRANSLATOR_DECLARATIONS(Repeat_acknowledge_engraver);
30 virtual void start_translation_timestep ();
31 virtual void process_music ();
32 virtual void initialize ();
38 Repeat_acknowledge_engraver::initialize ()
41 daddy_trans_l_->set_property ("repeatCommands", SCM_EOL);
45 Repeat_acknowledge_engraver::Repeat_acknowledge_engraver ()
50 Repeat_acknowledge_engraver::start_translation_timestep ()
53 Translator_group * tr = daddy_trans_l_->where_defined (ly_symbol2scm ("repeatCommands"));
57 tr->set_property ("repeatCommands", SCM_EOL);
61 Repeat_acknowledge_engraver::process_music ()
64 At the start of a piece, we don't print any repeat bars.
66 if (now_mom () == Moment (0))
69 SCM cs = get_property ("repeatCommands");
74 bool volta_found = false;
75 while (gh_pair_p (cs))
77 SCM command = ly_car (cs);
78 if (command == ly_symbol2scm ("start-repeat"))
80 else if (command == ly_symbol2scm ("end-repeat"))
82 else if (gh_pair_p (command) && ly_car (command) == ly_symbol2scm ("volta"))
95 TODO: line breaks might be allowed if we set whichBar to "".
99 We only set the barline if we wouldn't overwrite a previously set
102 SCM wb = get_property ("whichBar");
103 SCM db = get_property ("defaultBarType");
104 if (!gh_string_p (wb) || gh_equal_p (db, wb))
106 if (s != "" || (volta_found && !gh_string_p (wb)))
108 daddy_trans_l_->set_property ("whichBar", ly_str02scm (s.ch_C ()));
113 ENTER_DESCRIPTION(Repeat_acknowledge_engraver,
114 /* descr */ "Acknowledge repeated music, and convert the contents of
115 repeatCommands ainto an appropriate setting for whichBar",
118 /* reads */ "repeatCommands whichBar",