-/*
- chord-tremolo-iterator.cc -- implement Chord_tremolo_iterator
-
+/*
+ chord-tremolo-iterator.cc -- implement Chord_tremolo_iterator
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+ (c) 2000--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Erik Sandberg <mandolaerik@gmail.com>
+*/
-/*
- this is culled from various other iterators, but sharing code by subclassing proved to be too difficult.
- */
+#include "chord-tremolo-iterator.hh"
#include "input.hh"
-#include "chord-tremolo-iterator.hh"
+#include "international.hh"
+#include "misc.hh"
#include "repeated-music.hh"
-void
-Chord_tremolo_iterator::construct_children ()
-{
- Repeated_music * rep = dynamic_cast<Repeated_music*> (music_l ());
- factor_ = Moment (1, rep->repeat_count ());
- child_iter_p_ = get_iterator_p (rep->body ());
-}
-
Chord_tremolo_iterator::Chord_tremolo_iterator ()
{
- factor_ = 1;
- child_iter_p_ = 0;
}
-Chord_tremolo_iterator::Chord_tremolo_iterator (Chord_tremolo_iterator const &src)
- : Music_iterator (src)
+SCM
+Chord_tremolo_iterator::get_music_list () const
{
- child_iter_p_ = src.child_iter_p_? src.child_iter_p_->clone () : 0;
-}
+ Music *mus = get_music ();
+ Input *origin = mus->origin ();
+ Moment l = mus->get_length ();
+ Music *body = Repeated_music::body (mus);
+ bool body_is_sequential = body->is_mus_type ("sequential-music");
-void
-Chord_tremolo_iterator::process (Moment m)
-{
- if (!m)
- {
- Music_iterator *yeah = try_music (music_l ());
- if (yeah)
- set_translator (yeah->report_to_l ());
- else
- music_l ()->origin ()->warning (_ ("no one to print a tremolos"));
- }
+ int elt_count = body_is_sequential ? scm_ilength (body->get_property ("elements")) : 1;
- child_iter_p_->process (factor_ * m);
-}
+ if (body_is_sequential &&
+ (elt_count != 2
+ && elt_count != 1))
+ mus->origin ()->warning (_f ("expect 2 elements for chord tremolo, found %d", elt_count));
+ if (elt_count <= 0)
+ elt_count = 1;
-Moment
-Chord_tremolo_iterator::pending_moment () const
-{
- return child_iter_p_->pending_moment () / factor_;
-}
-
-bool
-Chord_tremolo_iterator::ok () const
-{
- return child_iter_p_ && child_iter_p_->ok ();
-}
-
-Chord_tremolo_iterator::~Chord_tremolo_iterator ()
-{
- delete child_iter_p_;
-}
-
-Music_iterator*
-Chord_tremolo_iterator::try_music_in_children (Music *m) const
-{
- return child_iter_p_->try_music (m);
+ if (elt_count == 1)
+ {
+ Music *ev = make_music_by_name (ly_symbol2scm ("TremoloEvent"));
+ ev->set_spot (*origin);
+ ev->set_property ("repeat-count", mus->get_property ("repeat-count"));
+ ev->set_property ("tremolo-type", mus->get_property ("tremolo-type"));
+ return scm_list_2 (ev->unprotect (), body->self_scm ());
+ }
+ else
+ {
+ SCM tremolo_symbol = ly_symbol2scm ("TremoloSpanEvent");
+ SCM start_event_scm = scm_call_2 (ly_lily_module_constant ("make-span-event"), tremolo_symbol, scm_from_int (START));
+ unsmob_music (start_event_scm)->set_spot (*origin);
+ SCM stop_event_scm = scm_call_2 (ly_lily_module_constant ("make-span-event"), tremolo_symbol, scm_from_int (STOP));
+
+ Music *start_event = unsmob_music (start_event_scm);
+ Music *stop_event = unsmob_music (stop_event_scm);
+ start_event->set_spot (*origin);
+ stop_event->set_spot (*origin);
+ start_event->set_property ("repeat-count", mus->get_property ("repeat-count"));
+ start_event->set_property ("tremolo-type", mus->get_property ("tremolo-type"));
+
+ return scm_list_3 (start_event_scm, body->self_scm (), stop_event_scm);
+ }
}
-
-
IMPLEMENT_CTOR_CALLBACK (Chord_tremolo_iterator);
-