2 head-grav.cc -- part of GNU LilyPond
4 (c) 1997--2003 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"
22 class Note_heads_engraver : public Engraver
24 Link_array<Item> notes_;
26 Link_array<Item> dots_;
27 Link_array<Music> note_reqs_;
30 TRANSLATOR_DECLARATIONS(Note_heads_engraver);
33 virtual bool try_music (Music *req) ;
34 virtual void process_music ();
36 virtual void stop_translation_timestep ();
39 Note_heads_engraver::Note_heads_engraver()
44 Note_heads_engraver::try_music (Music *m)
46 if (m->is_mus_type ("note-event"))
51 else if (m->is_mus_type ("busy-playing-event"))
52 return note_reqs_.size ();
53 else if (m->is_mus_type ("start-playing-event"))
54 return note_reqs_.size ();
61 Note_heads_engraver::process_music ()
63 for (int i=0; i < note_reqs_.size (); i++)
65 Item *note = make_item ("NoteHead");
67 Music * req = note_reqs_[i];
69 Duration dur = *unsmob_duration (req->get_mus_property ("duration"));
71 note->set_grob_property ("duration-log", gh_int2scm (dur.duration_log ()));
75 Item * d = make_item ("Dots");
76 Rhythmic_head::set_dots (note, d);
79 != robust_scm2int (d->get_grob_property ("dot-count"), 0))
80 d->set_grob_property ("dot-count", gh_int2scm (dur.dot_count ()));
82 d->set_parent (note, Y_AXIS);
83 announce_grob (d, SCM_EOL);
87 Pitch *pit =unsmob_pitch (req->get_mus_property ("pitch"));
89 int pos = pit->steps ();
90 SCM c0 = get_property ("centralCPosition");
92 pos += gh_scm2int (c0);
94 note->set_grob_property ("staff-position", gh_int2scm (pos));
95 announce_grob (note,req->self_scm());
101 Note_heads_engraver::stop_translation_timestep ()
103 for (int i=0; i < notes_.size (); i++)
105 typeset_grob (notes_[i]);
109 for (int i=0; i < dots_.size (); i++)
111 typeset_grob (dots_[i]);
119 ENTER_DESCRIPTION(Note_heads_engraver,
120 /* descr */ "Generate noteheads.",
121 /* creats*/ "NoteHead Dots",
122 /* accepts */ "note-event busy-playing-event ligature-event abort-event",
124 /* reads */ "centralCPosition",