2 bar-engraver.cc -- implement Bar_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997, 1998, 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "score-engraver.hh"
11 #include "bar-engraver.hh"
12 #include "staff-bar.hh"
13 #include "musical-request.hh"
14 #include "multi-measure-rest.hh"
15 #include "command-request.hh"
16 #include "timing-engraver.hh"
17 #include "engraver-group-engraver.hh"
20 Bar_engraver::Bar_engraver()
23 do_post_move_processing();
30 Bar_engraver::create_bar ()
34 bar_p_ = new Staff_bar;
35 bar_p_->set_elt_property ("break-aligned", SCM_BOOL_T);
37 // urg: "" != empty...
38 SCM default_type = get_property ("defaultBarType", 0);
39 if (gh_string_p (default_type))
41 bar_p_->type_str_ = ly_scm2string (default_type);
45 urg. Why did I implement this?
47 SCM prop = get_property ("barAtLineStart", 0);
48 if (to_boolean (prop))
50 bar_p_->set_elt_property ("at-line-start", SCM_BOOL_T);
52 announce_element (Score_element_info (bar_p_, 0));
57 Make a barline. If there are both |: and :| requested, merge them
62 Bar_engraver::request_bar (String requested_type)
66 SCM prop = get_property ("barAtLineStart", 0);
67 if (!to_boolean (prop))
70 bool bar_existed = bar_p_;
72 if (bar_existed && requested_type == "")
76 else if (((requested_type == "|:") && (bar_p_->type_str_ == ":|"))
77 || ((requested_type == ":|") && (bar_p_->type_str_ == "|:")))
78 bar_p_->type_str_ = ":|:";
80 bar_p_->type_str_ = requested_type;
84 Bar_engraver::do_creation_processing ()
89 Bar_engraver::do_removal_processing ()
93 typeset_element (bar_p_);
99 Bar_engraver::do_process_requests()
101 Translator * t = daddy_grav_l ()->get_simple_translator ("Timing_engraver");
103 Timing_engraver * te = dynamic_cast<Timing_engraver*>(t);
104 String which = (te) ? te->which_bar () : "";
106 if (which.length_i ())
109 bar_p_->type_str_ = which;
114 Score_engraver * e = 0;
115 Translator * t = daddy_grav_l ();
116 for (; !e && t; t = t->daddy_trans_l_)
118 e = dynamic_cast<Score_engraver*> (t);
122 programming_error ("No score engraver!");
130 Bar_engraver::do_pre_move_processing()
134 typeset_element (bar_p_);
139 ADD_THIS_TRANSLATOR(Bar_engraver);