2 timing-grav.cc -- implement Timing_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 #include "translator-group.hh"
9 #include "command-request.hh"
10 #include "grob-info.hh"
11 #include "multi-measure-rest.hh"
12 #include "timing-translator.hh"
13 #include "engraver.hh"
18 class Timing_engraver
: public Timing_translator
, public Engraver
22 Needed to know whether we're advancing in grace notes, or not.
26 virtual void start_translation_timestep ();
27 virtual void stop_translation_timestep ();
28 virtual void process_music ();
32 VIRTUAL_COPY_CONS (Translator
);
36 Timing_engraver::Timing_engraver ()
38 last_moment_
.main_part_
= Rational (-1);
41 ADD_THIS_TRANSLATOR (Timing_engraver
);
44 Timing_engraver::start_translation_timestep ()
46 Timing_translator::start_translation_timestep ();
48 SCM nonauto
= get_property ("barNonAuto");
49 Moment now
= now_mom ();
50 SCM which
= get_property ("whichBar");
53 Set the first bar of the score?
55 if (!gh_string_p (which
))
57 = (now
.main_part_
|| now
.main_part_
== last_moment_
.main_part_
)
58 ? SCM_EOL
: ly_str02scm ("|");
60 if (!gh_string_p (which
) && !to_boolean (nonauto
))
62 SCM always
= get_property ("barAlways");
63 Moment mp
= measure_position ();
64 if ( (last_moment_
.main_part_
!= now
.main_part_
66 || (to_boolean (always
)))
68 /* should this work, or be junked? See input/bugs/no-bars.ly */
69 which
= get_property ("defaultBarType");
73 daddy_trans_l_
->set_property ("whichBar", which
);
77 Timing_engraver::stop_translation_timestep ()
79 Timing_translator::stop_translation_timestep ();
80 daddy_trans_l_
->set_property ("whichBar", SCM_EOL
);
81 last_moment_
= now_mom ();
86 ugh. Translator doesn't do process_music ().
89 Timing_engraver::process_music ()
91 Timing_translator::process_music ();