2 staff-switching-translator.cc -- implement Staff_switching_translator
4 source file of the GNU LilyPond music typesetter
6 (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "interpretation-context-handle.hh"
11 #include "drul-array.hh"
12 #include "engraver-group-engraver.hh"
13 #include "musical-request.hh"
15 class Staff_switching_translator : public Engraver
17 Interpretation_context_handle my_voice_;
18 Drul_array<Interpretation_context_handle> staff_handle_drul_;
20 virtual bool do_try_music (Music* m);
21 virtual void do_creation_processing ();
23 void default_voice (Direction);
25 Staff_switching_translator ();
26 VIRTUAL_COPY_CONS(Translator);
29 Staff_switching_translator::Staff_switching_translator ()
34 Staff_switching_translator::do_creation_processing ()
36 Translator_group * daddy =daddy_grav_l (); // staff switching context
38 Scalar s = get_property("staffContextName", 0);
39 staff_handle_drul_[UP].set_translator (daddy->daddy_trans_l_ -> find_create_translator_l (s, "upper"));
40 staff_handle_drul_[DOWN].set_translator (daddy->daddy_trans_l_-> find_create_translator_l (s, "lower"));
43 staff_handle_drul_[DOWN].report_to_l ()->set_property ("defaultClef", "bass");
50 Staff_switching_translator::default_voice (Direction d)
52 Scalar s = get_property ("acceptorName",0);
53 my_voice_.set_translator (staff_handle_drul_[d].report_to_l ()->find_create_translator_l ("Thread", daddy_trans_l_->id_str_));
57 Staff_switching_translator::do_try_music (Music*m)
59 if (Note_req*nr = dynamic_cast<Note_req*> (m))
61 Direction staff = (nr->pitch_.semitone_pitch () >= 0)
66 Translator_group * mv = my_voice_.report_to_l ();
67 Translator_group *dest_staff =staff_handle_drul_[staff].report_to_l ();
68 Scalar s = get_property ("switcherName", 0);
70 while (mv && mv->type_str_ != s)
72 mv = mv -> daddy_trans_l_;
76 default_voice (staff);
78 if (mv->daddy_trans_l_ != dest_staff)
80 mv->daddy_trans_l_->remove_translator_p (mv);
81 dest_staff->add_translator (mv);
85 return my_voice_.try_music (m);
88 ADD_THIS_TRANSLATOR(Staff_switching_translator);