2 vertical-align-grav.cc -- implement Vertical_align_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
10 #include "vertical-align-grav.hh"
11 #include "vertical-align-spanner.hh"
13 Vertical_align_engraver::Vertical_align_engraver()
19 Vertical_align_engraver::do_creation_processing()
21 valign_p_ =new Vertical_align_spanner;
22 valign_p_->set_bounds(LEFT,get_staff_info().command_pcol_l ());
23 announce_element (Score_elem_info (valign_p_ , 0));
27 Vertical_align_engraver::do_removal_processing()
29 valign_p_->set_bounds(RIGHT,get_staff_info().command_pcol_l ());
30 typeset_element (valign_p_);
35 Vertical_align_engraver::acknowledge_element (Score_elem_info i)
37 if (i.origin_grav_l_arr_.size() == 2 &&
38 i.elem_l_->is_type_b (Vertical_group_element::static_name()) &&
39 !i.elem_l_->axis_group_l_a_[Y_AXIS])
41 assert (!valign_p_->contains_b (i.elem_l_));
43 valign_p_->add (i.elem_l_);
48 IMPLEMENT_IS_TYPE_B1(Vertical_align_engraver, Engraver);
49 ADD_THIS_ENGRAVER(Vertical_align_engraver);