2 rest-engraver.cc -- implement Rest_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
12 #include "duration.hh"
14 #include "rhythmic-head.hh"
15 #include "staff-symbol-referencer.hh"
16 #include "stream-event.hh"
18 #include "translator.icc"
20 class Rest_engraver : public Engraver
22 Stream_event *rest_event_;
26 void start_translation_timestep ();
27 void process_music ();
28 DECLARE_TRANSLATOR_LISTENER (rest);
30 TRANSLATOR_DECLARATIONS (Rest_engraver);
34 Should merge with Note_head_engraver
36 Rest_engraver::Rest_engraver ()
44 Rest_engraver::start_translation_timestep ()
52 Rest_engraver::process_music ()
54 if (rest_event_ && !rest_)
56 rest_ = make_item ("Rest", rest_event_->self_scm ());
58 int durlog = unsmob_duration (rest_event_->get_property ("duration"))->duration_log ();
60 rest_->set_property ("duration-log",
61 scm_from_int (durlog));
63 int dots = unsmob_duration (rest_event_->get_property ("duration"))->dot_count ();
67 dot_ = make_item ("Dots", SCM_EOL);
69 Rhythmic_head::set_dots (rest_, dot_);
70 dot_->set_parent (rest_, Y_AXIS);
71 dot_->set_property ("dot-count", scm_from_int (dots));
74 Pitch *p = unsmob_pitch (rest_event_->get_property ("pitch"));
77 This is ridiculous -- rests don't have pitch, but we act as if
82 int pos = p->steps ();
83 SCM c0 = get_property ("middleCPosition");
84 if (scm_is_number (c0))
85 pos += scm_to_int (c0);
87 rest_->set_property ("staff-position", scm_from_int (pos));
92 IMPLEMENT_TRANSLATOR_LISTENER (Rest_engraver, rest);
94 Rest_engraver::listen_rest (Stream_event *ev)
96 ASSIGN_EVENT_ONCE (rest_event_, ev);
99 ADD_TRANSLATOR (Rest_engraver,
101 /* create */ "Rest Dots",
102 /* accept */ "rest-event",
103 /* read */ "middleCPosition",