2 chord-tremolo-iterator.cc -- implement Chord_tremolo_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 Erik Sandberg <mandolaerik@gmail.com>
10 #include "chord-tremolo-iterator.hh"
13 #include "international.hh"
15 #include "repeated-music.hh"
17 Chord_tremolo_iterator::Chord_tremolo_iterator ()
22 Chord_tremolo_iterator::get_music_list () const
24 Music *mus = get_music ();
25 Input *origin = mus->origin ();
26 Moment l = mus->get_length ();
27 Music *body = Repeated_music::body (mus);
28 bool body_is_sequential = body->is_mus_type ("sequential-music");
30 int elt_count = body_is_sequential ? scm_ilength (body->get_property ("elements")) : 1;
32 if (body_is_sequential &&
35 mus->origin ()->warning (_f ("expect 2 elements for chord tremolo, found %d", elt_count));
42 Music *ev = make_music_by_name (ly_symbol2scm ("TremoloEvent"));
43 ev->set_spot (*origin);
44 ev->set_property ("repeat-count", mus->get_property ("repeat-count"));
45 ev->set_property ("tremolo-type", mus->get_property ("tremolo-type"));
46 return scm_list_2 (ev->unprotect (), body->self_scm ());
50 SCM tremolo_symbol = ly_symbol2scm ("TremoloSpanEvent");
51 SCM start_event_scm = scm_call_2 (ly_lily_module_constant ("make-span-event"), tremolo_symbol, scm_from_int (START));
52 unsmob_music (start_event_scm)->set_spot (*origin);
53 SCM stop_event_scm = scm_call_2 (ly_lily_module_constant ("make-span-event"), tremolo_symbol, scm_from_int (STOP));
55 Music *start_event = unsmob_music (start_event_scm);
56 Music *stop_event = unsmob_music (stop_event_scm);
57 start_event->set_spot (*origin);
58 stop_event->set_spot (*origin);
59 start_event->set_property ("repeat-count", mus->get_property ("repeat-count"));
60 start_event->set_property ("tremolo-type", mus->get_property ("tremolo-type"));
62 return scm_list_3 (start_event_scm, body->self_scm (), stop_event_scm);
66 IMPLEMENT_CTOR_CALLBACK (Chord_tremolo_iterator);