2 vertical-align-grav.cc -- implement Vertical_align_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "vertical-align-engraver.hh"
11 #include "vertical-align-spanner.hh"
12 #include "vertical-group-spanner.hh"
14 Vertical_align_engraver::Vertical_align_engraver()
20 Vertical_align_engraver::do_creation_processing()
22 valign_p_ =new Vertical_align_spanner;
23 valign_p_->set_bounds(LEFT,get_staff_info().command_pcol_l ());
24 announce_element (Score_element_info (valign_p_ , 0));
28 Vertical_align_engraver::do_removal_processing()
30 Scalar dist (get_property ("maxVerticalAlign"));
31 if (dist.length_i () && dist.isnum_b ())
33 valign_p_->threshold_interval_[BIGGER] = Real (dist);
36 dist = get_property ("minVerticalAlign");
37 if (dist.length_i () && dist.isnum_b ())
39 valign_p_->threshold_interval_[SMALLER] = Real (dist);
42 valign_p_->set_bounds(RIGHT,get_staff_info().command_pcol_l ());
43 typeset_element (valign_p_);
48 Vertical_align_engraver::acknowledge_element (Score_element_info i)
50 if (i.origin_grav_l_arr_.size() == 1 &&
51 dynamic_cast<Vertical_group_spanner *> (i.elem_l_) &&
52 !i.elem_l_->axis_group_l_a_[Y_AXIS])
54 assert (!valign_p_->contains_b (i.elem_l_));
56 valign_p_->add_element (i.elem_l_);
61 IMPLEMENT_IS_TYPE_B1(Vertical_align_engraver, Engraver);
62 ADD_THIS_TRANSLATOR(Vertical_align_engraver);