2 arpeggio-engraver.cc -- implement Arpeggio_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2005 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "pointer-group-interface.hh"
12 #include "arpeggio.hh"
14 #include "rhythmic-head.hh"
15 #include "side-position-interface.hh"
16 #include "note-column.hh"
18 #include "translator.icc"
20 class Arpeggio_engraver : public Engraver
23 TRANSLATOR_DECLARATIONS (Arpeggio_engraver);
26 virtual void acknowledge_grob (Grob_info);
27 PRECOMPUTED_VIRTUAL void process_music ();
28 PRECOMPUTED_VIRTUAL void stop_translation_timestep ();
29 virtual bool try_music (Music *);
32 Music *arpeggio_event_;
35 Arpeggio_engraver::Arpeggio_engraver ()
42 Arpeggio_engraver::try_music (Music *m)
52 Arpeggio_engraver::acknowledge_grob (Grob_info info)
56 if (Stem::has_interface (info.grob ()))
58 if (!arpeggio_->get_parent (Y_AXIS))
59 arpeggio_->set_parent (info.grob (), Y_AXIS);
61 Pointer_group_interface::add_grob (arpeggio_,
62 ly_symbol2scm ("stems"),
67 We can't catch local key items (accidentals) from Voice context,
68 see Local_key_engraver
70 else if (Rhythmic_head::has_interface (info.grob ()))
72 Side_position_interface::add_support (arpeggio_, info.grob ());
74 else if (Note_column::has_interface (info.grob ()))
76 info.grob ()->set_object ("arpeggio", arpeggio_->self_scm ());
82 Arpeggio_engraver::process_music ()
86 arpeggio_ = make_item ("Arpeggio", arpeggio_event_->self_scm ());
91 Arpeggio_engraver::stop_translation_timestep ()
97 ADD_TRANSLATOR (Arpeggio_engraver,
98 /* descr */ "Generate an Arpeggio symbol",
99 /* creats*/ "Arpeggio",
100 /* accepts */ "arpeggio-event",
101 /* acks */ "stem-interface rhythmic-head-interface note-column-interface",