2 align-note-column-engraver.cc -- implement Align_note_column_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "engraver.hh"
11 #include "grace-align-item.hh"
12 #include "note-column.hh"
13 #include "local-key-item.hh"
15 #include "directional-element-interface.hh"
18 catch notes, and put them in a row.
20 class Align_note_column_engraver: public Engraver
22 Grace_align_item * align_item_p_;
23 Note_column * now_column_l_;
24 Local_key_item * accidental_l_;
26 virtual void process_acknowledged ();
27 virtual void do_post_move_processing ();
28 virtual void do_creation_processing ();
29 virtual void do_removal_processing ();
30 virtual void acknowledge_element (Score_element_info);
32 VIRTUAL_COPY_CONS(Translator);
33 Align_note_column_engraver ();
36 ADD_THIS_TRANSLATOR (Align_note_column_engraver);
38 Align_note_column_engraver::Align_note_column_engraver()
46 Align_note_column_engraver::do_creation_processing ()
48 align_item_p_ = new Grace_align_item;
49 // needed for setting font size.
50 announce_element (Score_element_info (align_item_p_, 0));
54 Align_note_column_engraver::do_removal_processing ()
56 SCM al = get_property ("graceAlignPosition", 0);
59 directional_element (align_item_p_).set (to_dir (al));
62 typeset_element (align_item_p_);
67 Align_note_column_engraver::acknowledge_element (Score_element_info inf)
69 if (Note_column * n = dynamic_cast<Note_column*> (inf.elem_l_))
73 else if (Local_key_item * it = dynamic_cast<Local_key_item*> (inf.elem_l_))
79 Align_note_column_engraver::process_acknowledged ()
81 if (now_column_l_ && accidental_l_)
84 /* Can't inspect width of Local_key_item, since
86 A. it may not be fully built
88 B. it has no pscore_l_ field.
91 SCM grsp = get_property ("graceAccidentalSpace", 0);
92 if (gh_number_p(grsp))
97 Real extra_space = gh_scm2double(grsp);
98 SCM e = gh_cons (gh_double2scm (-extra_space), gh_double2scm (0.0));
99 now_column_l_->set_elt_property ("extra-space", e);
105 align_item_p_->add_element (now_column_l_);
111 Align_note_column_engraver::do_post_move_processing ()