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. Used for aligning grace notes.
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 Align_note_column_engraver::Align_note_column_engraver()
44 Align_note_column_engraver::do_creation_processing ()
46 align_item_p_ = new Grace_align_item;
47 // needed for setting font size.
48 announce_element (Score_element_info (align_item_p_, 0));
52 Align_note_column_engraver::do_removal_processing ()
54 SCM al = get_property ("graceAlignPosition", 0);
57 directional_element (align_item_p_).set (to_dir (al));
60 typeset_element (align_item_p_);
65 Align_note_column_engraver::acknowledge_element (Score_element_info inf)
67 if (Note_column * n = dynamic_cast<Note_column*> (inf.elem_l_))
71 else if (Local_key_item * it = dynamic_cast<Local_key_item*> (inf.elem_l_))
77 Align_note_column_engraver::process_acknowledged ()
79 if (now_column_l_ && accidental_l_)
82 /* Can't inspect width of Local_key_item, since
84 A. it may not be fully built
86 B. it has no pscore_l_ field.
89 SCM grsp = get_property ("graceAccidentalSpace", 0);
90 if (gh_number_p(grsp))
95 Real extra_space = gh_scm2double(grsp);
96 SCM e = gh_cons (gh_double2scm (-extra_space), gh_double2scm (0.0));
97 now_column_l_->set_elt_property ("extra-space", e);
103 align_item_p_->add_element (now_column_l_);
109 Align_note_column_engraver::do_post_move_processing ()
115 ADD_THIS_TRANSLATOR(Align_note_column_engraver);