2 chord-tremolo-iterator.cc -- implement Chord_tremolo_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2002 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.
17 #include "chord-tremolo-iterator.hh"
18 #include "repeated-music.hh"
21 Chord_tremolo_iterator::construct_children ()
23 Repeated_music * rep = dynamic_cast<Repeated_music*> (get_music ());
24 factor_ = Moment (Rational(1, 1));
25 child_iter_ = unsmob_iterator (get_iterator (rep->body ()));
28 Chord_tremolo_iterator::Chord_tremolo_iterator ()
34 Chord_tremolo_iterator::Chord_tremolo_iterator (Chord_tremolo_iterator const &src)
35 : Music_iterator (src)
37 factor_ = src.factor_;
38 child_iter_ = src.child_iter_ ? src.child_iter_->clone () : 0;
40 scm_gc_unprotect_object (child_iter_->self_scm());
44 Chord_tremolo_iterator::do_quit()
51 Chord_tremolo_iterator::derived_mark () const
54 scm_gc_mark (child_iter_->self_scm());
58 Chord_tremolo_iterator::process (Moment m)
62 Music_iterator *yeah = try_music (get_music ());
64 set_translator (yeah->report_to ());
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);
92 IMPLEMENT_CTOR_CALLBACK (Chord_tremolo_iterator);