2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "engraver.hh"
21 #include "rhythmic-head.hh"
23 #include "note-column.hh"
25 #include "dot-column.hh"
26 #include "pointer-group-interface.hh"
28 #include "translator.icc"
31 this engraver glues together stems, rests and note heads into a NoteColumn
34 It also generates spacing objects. Originally, we have tried to
35 have the spacing functionality at different levels.
37 - by simply using the sequence of Separation-item as
38 spacing-sequences (at staff level). Unfortunately, this fucks up if
39 there are different kinds of tuplets in different voices (8th and
40 8ths triplets combined made the program believe there were 1/12 th
43 Doing it in a separate engraver using timing info is generally
44 complicated (start/end time management), and fucks up if a voice
47 Now we do it from here again. This has the problem that voices can
48 appear and disappear at will, leaving lots of loose ends (the note
49 spacing engraver don't know where to connect the last note of the
50 voice on the right with), but we don't complain about those, and let
51 the default spacing do its work.
54 class Rhythmic_column_engraver : public Engraver
56 vector<Grob *> rheads_;
61 TRANSLATOR_DECLARATIONS (Rhythmic_column_engraver);
64 void acknowledge_stem (Grob_info);
65 void acknowledge_flag (Grob_info);
66 void acknowledge_rhythmic_head (Grob_info);
67 void process_acknowledged ();
68 void stop_translation_timestep ();
71 Rhythmic_column_engraver::Rhythmic_column_engraver ()
80 Rhythmic_column_engraver::process_acknowledged ()
85 note_column_ = make_item ("NoteColumn", rheads_[0]->self_scm ());
87 for (vsize i = 0; i < rheads_.size (); i++)
88 if (!rheads_[i]->get_parent (X_AXIS))
89 Note_column::add_head (note_column_, rheads_[i]);
97 && !stem_->get_parent (X_AXIS))
99 Note_column::set_stem (note_column_, stem_);
105 Pointer_group_interface::add_grob (note_column_, ly_symbol2scm ("elements"), flag_);
112 Rhythmic_column_engraver::acknowledge_stem (Grob_info i)
118 Rhythmic_column_engraver::acknowledge_flag (Grob_info i)
124 Rhythmic_column_engraver::acknowledge_rhythmic_head (Grob_info i)
126 rheads_.push_back (i.grob ());
130 Rhythmic_column_engraver::stop_translation_timestep ()
139 Rhythmic_column_engraver::boot ()
141 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, stem);
142 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, flag);
143 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, rhythmic_head);
146 ADD_TRANSLATOR (Rhythmic_column_engraver,
148 "Generate @code{NoteColumn}, an object that groups stems,"
149 " note heads, and rests.",