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release: 0.1.11
[lilypond.git] / lily / line-group-grav.cc
1 /*
2   staff-gravs.cc -- implement Line_group_engraver
3
4   source file of the GNU LilyPond music typesetter
5
6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
7 */
8
9 #include "staff-sym.hh"
10 #include "vertical-group-spanner.hh"
11 #include "command-request.hh"
12 #include "bar.hh"
13 #include "debug.hh"
14 #include "line-group-grav.hh"
15 #include "p-col.hh"
16
17 Line_group_engraver::Line_group_engraver()
18 {
19   staffline_p_ =0;
20 }
21
22 void
23 Line_group_engraver::acknowledge_element (Score_elem_info  elem)
24 {
25   if (!elem.elem_l_->axis_group_l_a_[Y_AXIS])
26         staffline_p_->add_element (elem.elem_l_);
27 }
28
29
30 void
31 Line_group_engraver::do_removal_processing()
32 {
33   staffline_p_->set_bounds(RIGHT,get_staff_info().command_pcol_l ());
34   typeset_element (staffline_p_);
35   staffline_p_ = 0;
36 }
37
38 void
39 Line_group_engraver::do_creation_processing()
40 {
41   staffline_p_ = new Vertical_group_spanner ;
42   staffline_p_->set_bounds(LEFT,get_staff_info().command_pcol_l ());
43
44   // don't broadcast to self.
45   announce_element (Score_elem_info (staffline_p_,0));
46 }
47
48
49
50 IMPLEMENT_IS_TYPE_B1(Line_group_engraver,Engraver);
51 ADD_THIS_ENGRAVER(Line_group_engraver);
52