2 chord-tremolo-iterator.cc -- implement Chord_tremolo_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
12 this is culled from various other iterators, but sharing code by
13 subclassing proved to be too difficult.
16 #include "chord-tremolo-iterator.hh"
19 #include "repeated-music.hh"
22 Chord_tremolo_iterator::construct_children ()
24 Music *m = get_music();
26 factor_ = Moment (Rational (1, 1));
27 child_iter_ = unsmob_iterator (get_iterator (Repeated_music::body (m)));
30 Chord_tremolo_iterator::Chord_tremolo_iterator ()
37 Chord_tremolo_iterator::do_quit ()
44 Chord_tremolo_iterator::derived_mark () const
47 scm_gc_mark (child_iter_->self_scm ());
51 Chord_tremolo_iterator::derived_substitute (Context *f, Context *t)
54 child_iter_->substitute_outlet (f,t);
58 Chord_tremolo_iterator::process (Moment m)
62 Music_iterator *yeah = try_music (get_music ());
64 set_context (yeah->get_outlet ());
66 get_music ()->origin ()->warning (_ ("no one to print a tremolos"));
69 child_iter_->process (factor_ * m);
73 Chord_tremolo_iterator::pending_moment () const
75 return child_iter_->pending_moment () / factor_;
79 Chord_tremolo_iterator::ok () const
81 return child_iter_ && child_iter_->ok ();
85 Chord_tremolo_iterator::try_music_in_children (Music *m) const
87 return child_iter_->try_music (m);
90 IMPLEMENT_CTOR_CALLBACK (Chord_tremolo_iterator);