2 note-heads-engraver.cc -- part of GNU LilyPond
4 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 #include "rhythmic-head.hh"
9 #include "paper-def.hh"
12 #include "dot-column.hh"
13 #include "staff-symbol-referencer.hh"
15 #include "engraver.hh"
18 class Note_heads_engraver : public Engraver
20 Link_array<Item> notes_;
21 Link_array<Item> dots_;
22 Link_array<Music> note_reqs_;
25 TRANSLATOR_DECLARATIONS(Note_heads_engraver);
28 virtual bool try_music (Music *req) ;
29 virtual void process_music ();
31 virtual void stop_translation_timestep ();
34 Note_heads_engraver::Note_heads_engraver()
39 Note_heads_engraver::try_music (Music *m)
41 if (m->is_mus_type ("note-event"))
46 else if (m->is_mus_type ("busy-playing-event"))
47 return note_reqs_.size ();
48 else if (m->is_mus_type ("start-playing-event"))
49 return note_reqs_.size ();
56 Note_heads_engraver::process_music ()
58 for (int i=0; i < note_reqs_.size (); i++)
60 Item *note = make_item ("NoteHead");
62 Music * req = note_reqs_[i];
64 Duration dur = *unsmob_duration (req->get_mus_property ("duration"));
66 note->set_grob_property ("duration-log", gh_int2scm (dur.duration_log ()));
70 Item * d = make_item ("Dots");
71 Rhythmic_head::set_dots (note, d);
74 != robust_scm2int (d->get_grob_property ("dot-count"), 0))
75 d->set_grob_property ("dot-count", gh_int2scm (dur.dot_count ()));
77 d->set_parent (note, Y_AXIS);
78 announce_grob (d, SCM_EOL);
82 Pitch *pit =unsmob_pitch (req->get_mus_property ("pitch"));
84 int pos = pit ? pit->steps () : 0;
85 SCM c0 = get_property ("centralCPosition");
87 pos += gh_scm2int (c0);
89 note->set_grob_property ("staff-position", gh_int2scm (pos));
90 announce_grob (note,req->self_scm());
96 Note_heads_engraver::stop_translation_timestep ()
98 for (int i=0; i < notes_.size (); i++)
100 typeset_grob (notes_[i]);
104 for (int i=0; i < dots_.size (); i++)
106 typeset_grob (dots_[i]);
114 ENTER_DESCRIPTION(Note_heads_engraver,
115 /* descr */ "Generate noteheads.",
116 /* creats*/ "NoteHead Dots",
117 /* accepts */ "note-event busy-playing-event",
119 /* reads */ "centralCPosition",