2 hara-kiri-engraver.cc -- implement Hara_kiri_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "axis-group-engraver.hh"
10 #include "hara-kiri-group-spanner.hh"
11 #include "rhythmic-head.hh"
14 #include "translator.icc"
16 class Hara_kiri_engraver : public Axis_group_engraver
19 virtual Spanner *get_spanner ();
20 DECLARE_ACKNOWLEDGER (grob);
21 virtual void add_element (Grob *e);
22 void start_translation_timestep ();
23 virtual void derived_mark () const;
26 TRANSLATOR_DECLARATIONS (Hara_kiri_engraver);
30 Hara_kiri_engraver::derived_mark () const
32 scm_gc_mark (interesting_);
36 Hara_kiri_engraver::start_translation_timestep ()
38 Axis_group_engraver::start_translation_timestep ();
39 interesting_ = get_property ("keepAliveInterfaces");
43 Hara_kiri_engraver::add_element (Grob *e)
45 Hara_kiri_group_spanner::add_element (staffline_, e);
49 Hara_kiri_engraver::get_spanner ()
51 Spanner *sp = make_spanner ("RemoveEmptyVerticalGroup", SCM_EOL);
57 Hara_kiri_engraver::acknowledge_grob (Grob_info i)
59 Axis_group_engraver::acknowledge_grob (i);
62 for (SCM s = interesting_; scm_is_pair (s); s = scm_cdr (s))
64 if (i.grob ()->internal_has_interface (scm_car (s)))
65 Hara_kiri_group_spanner::add_interesting_item (staffline_, i.grob ());
70 Hara_kiri_engraver::Hara_kiri_engraver ()
72 interesting_ = SCM_EOL;
75 ADD_ACKNOWLEDGER (Hara_kiri_engraver, grob);
76 ADD_TRANSLATOR (Hara_kiri_engraver,
77 /* doc */ "Like Axis_group_engraver, but make a hara-kiri spanner, and add "
78 "interesting items (ie. note heads, lyric syllables and normal rests) ",
79 /* create */ "RemoveEmptyVerticalGroup",
81 /* read */ "keepAliveInterfaces",