2 rhythmic-column-engraver.cc -- implement Rhythmic_column_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
10 #include "rhythmic-head.hh"
12 #include "note-column.hh"
14 #include "dot-column.hh"
15 #include "pointer-group-interface.hh"
17 #include "translator.icc"
20 this engraver glues together stems, rests and note heads into a NoteColumn
23 It also generates spacing objects. Originally, we have tried to
24 have the spacing functionality at different levels.
26 - by simply using the sequence of Separation-item as
27 spacing-sequences (at staff level). Unfortunately, this fucks up if
28 there are different kinds of tuplets in different voices (8th and
29 8ths triplets combined made the program believe there were 1/12 th
32 Doing it in a separate engraver using timing info is generally
33 complicated (start/end time management), and fucks up if a voice
36 Now we do it from here again. This has the problem that voices can
37 appear and disappear at will, leaving lots of loose ends (the note
38 spacing engraver don't know where to connect the last note of the
39 voice on the right with), but we don't complain about those, and let
40 the default spacing do its work.
43 class Rhythmic_column_engraver : public Engraver
45 vector<Grob*> rheads_;
51 TRANSLATOR_DECLARATIONS (Rhythmic_column_engraver);
54 DECLARE_ACKNOWLEDGER (dot_column);
55 DECLARE_ACKNOWLEDGER (stem);
56 DECLARE_ACKNOWLEDGER (rhythmic_head);
57 DECLARE_ACKNOWLEDGER (arpeggio);
58 void process_acknowledged ();
59 void stop_translation_timestep ();
62 Rhythmic_column_engraver::Rhythmic_column_engraver ()
73 Rhythmic_column_engraver::process_acknowledged ()
79 note_column_ = make_item ("NoteColumn", rheads_[0]->self_scm ());
82 for (vsize i = 0; i < rheads_.size (); i++)
84 if (!rheads_[i]->get_parent (X_AXIS))
85 Note_column::add_head (note_column_, rheads_[i]);
87 if (Grob *dot = unsmob_grob (rheads_[i]->get_object ("dot")))
88 Pointer_group_interface::add_grob (note_column_, ly_symbol2scm ("elements"), dot);
96 && !dotcol_->get_parent (X_AXIS))
97 Note_column::set_dotcol (note_column_, dotcol_);
100 && !stem_->get_parent (X_AXIS))
102 Note_column::set_stem (note_column_, stem_);
108 Pointer_group_interface::add_grob (note_column_, ly_symbol2scm ("elements"), arpeggio_);
109 note_column_->set_object ("arpeggio", arpeggio_->self_scm ());
115 Rhythmic_column_engraver::acknowledge_stem (Grob_info i)
121 Rhythmic_column_engraver::acknowledge_rhythmic_head (Grob_info i)
123 rheads_.push_back (i.grob ());
127 Rhythmic_column_engraver::acknowledge_dot_column (Grob_info i)
133 Rhythmic_column_engraver::acknowledge_arpeggio (Grob_info i)
135 arpeggio_ = i.grob ();
139 Rhythmic_column_engraver::stop_translation_timestep ()
147 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, dot_column);
148 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, stem);
149 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, rhythmic_head);
150 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, arpeggio);
152 ADD_TRANSLATOR (Rhythmic_column_engraver,
153 /* doc */ "Generates NoteColumn, an objects that groups stems, noteheads and rests.",
154 /* create */ "NoteColumn",