2 mark-engraver.cc -- implement Metronome_mark_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2005 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "note-column.hh"
12 #include "bar-line.hh"
13 #include "time-signature.hh"
14 #include "engraver-group-engraver.hh"
18 put stuff over or next to bars. Examples: bar numbers, marginal notes,
21 class Metronome_mark_engraver : public Engraver
24 TRANSLATOR_DECLARATIONS (Metronome_mark_engraver);
30 void create_items (Music *);
32 virtual void stop_translation_timestep ();
33 virtual bool try_music (Music *ev);
34 virtual void process_music ();
37 Metronome_mark_engraver::Metronome_mark_engraver ()
44 Metronome_mark_engraver::stop_translation_timestep ()
48 Grob *mc = unsmob_grob (get_property ("currentMusicalColumn"));
49 text_->set_parent (mc, X_AXIS);
50 text_->set_property ("side-support-elements", get_property ("stavesFound"));
58 Metronome_mark_engraver::create_items (Music *rq)
63 text_ = make_item ("MetronomeMark", rq->self_scm ());
67 Metronome_mark_engraver::try_music (Music *r)
74 Metronome_mark_engraver::process_music ()
78 create_items (mark_ev_);
80 SCM proc = get_property ("metronomeMarkFormatter");
81 SCM result = scm_call_2 (proc, mark_ev_->self_scm (),
82 context ()->self_scm ());
84 text_->set_property ("text", result);
88 ADD_TRANSLATOR (Metronome_mark_engraver,
89 /* descr */ "Engrave metro nome marking. This delegates the formatting work "
90 "to the function in the metronomeMarkFormatter property. "
91 "The mark is put over all staves. "
92 "The staves are taken from the @code{stavesFound} property, "
93 "which is maintained by @code{@ref{Staff_collecting_engraver}}. ",
94 /* creats*/ "MetronomeMark",
95 /* accepts */ "metronome-change-event",
97 /* reads */ "stavesFound metronomeMarkFormatter",