2 bar-engraver.cc -- implement Bar_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "bar-line.hh"
11 #include "score-engraver.hh"
16 generate bars. Either user ("|:"), or default (new measure)
19 class Bar_engraver : public Engraver
22 TRANSLATOR_DECLARATIONS (Bar_engraver);
23 void request_bar (String type_string);
26 virtual void finalize ();
27 virtual void stop_translation_timestep ();
28 virtual void process_acknowledged_grobs ();
37 Bar_engraver::Bar_engraver ()
43 Bar_engraver::create_bar ()
47 bar_ = make_item ("BarLine", SCM_EOL);
48 SCM gl = get_property ("whichBar");
49 if (scm_equal_p (gl, bar_->get_property ("glyph")) != SCM_BOOL_T)
50 bar_->set_property ("glyph", gl);
55 Bar_engraver::finalize ()
61 Bar_engraver should come *after* any engravers that
64 This is a little hairy : whichBar may be set by
65 Repeat_acknowledge_engraver::process_music, which is at score
66 context. This means that grobs could should be created after
67 process_music. We do stuff process_acknowledged_grobs (), just to be
73 Bar_engraver::process_acknowledged_grobs ()
75 if (!bar_ && scm_is_string (get_property ("whichBar")))
80 Bar_engraver::typeset_bar ()
86 lines may only be broken if there is a barline in all staves
89 Bar_engraver::stop_translation_timestep ()
92 /* guh. Use properties! */
93 get_score_engraver ()->forbid_breaks ();
99 ENTER_DESCRIPTION (Bar_engraver,
100 /* descr */ "Create barlines. This engraver is controlled through the "
101 "@code{whichBar} property. If it has no bar line to create, it will forbid a linebreak at this point",
102 /* creats*/ "BarLine",
105 /* reads */ "whichBar",