2 separating-line-group-grav.cc -- implement Separating_line_group_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "separating-group-spanner.hh"
11 #include "separation-item.hh"
12 #include "paper-column.hh"
13 #include "paper-def.hh"
14 #include "engraver.hh"
16 class Separating_line_group_engraver : public Engraver
20 Item * nobreak_malt_p_;
21 Separating_group_spanner * sep_span_p_;
23 virtual void acknowledge_element (Score_element_info);
24 virtual void do_creation_processing ();
25 virtual void do_removal_processing ();
26 virtual void do_pre_move_processing ();
28 Separating_line_group_engraver ();
29 VIRTUAL_COPY_CONS (Translator);
32 Separating_line_group_engraver::Separating_line_group_engraver ()
40 Separating_line_group_engraver::do_creation_processing ()
42 sep_span_p_ = new Separating_group_spanner (SCM_EOL);
43 announce_element (Score_element_info (sep_span_p_, 0));
44 sep_span_p_->set_bound (LEFT, unsmob_element (get_property ("currentCommandColumn")));
48 Separating_line_group_engraver::do_removal_processing ()
50 sep_span_p_->set_bound (RIGHT, unsmob_element (get_property ("currentCommandColumn")));
51 typeset_element (sep_span_p_);
56 Separating_line_group_engraver::acknowledge_element (Score_element_info i)
58 Item * it = dynamic_cast <Item *> (i.elem_l_);
59 if (it && !it->parent_l (X_AXIS))
61 bool ib =it->breakable_b ();
62 Item *&p_ref_ (ib ? break_malt_p_
69 (get_property ("basicSingleMaltGroupingItemProperties"));
72 p_ref_->set_elt_property ("breakable", SCM_BOOL_T);
73 announce_element (Score_element_info (p_ref_, 0));
75 Separation_item::add_item (p_ref_,it);
80 Separating_line_group_engraver::do_pre_move_processing ()
84 sep_span_p_->add_spacing_unit (break_malt_p_);
86 typeset_element (break_malt_p_);
91 sep_span_p_->add_spacing_unit (nobreak_malt_p_);
92 typeset_element (nobreak_malt_p_);
99 ADD_THIS_TRANSLATOR( Separating_line_group_engraver);