2 rhythmic-column-engraver.cc -- implement Rhythmic_column_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 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_;
53 void add_spacing_item (Grob *);
55 TRANSLATOR_DECLARATIONS (Rhythmic_column_engraver);
58 DECLARE_ACKNOWLEDGER (dot_column);
59 DECLARE_ACKNOWLEDGER (stem);
60 DECLARE_ACKNOWLEDGER (rhythmic_head);
61 void process_acknowledged ();
62 void stop_translation_timestep ();
65 Rhythmic_column_engraver::Rhythmic_column_engraver ()
76 Rhythmic_column_engraver::add_spacing_item (Grob *g)
80 Pointer_group_interface::add_grob (spacing_,
81 ly_symbol2scm ("left-items"),
86 Pointer_group_interface::add_grob (last_spacing_,
87 ly_symbol2scm ("right-items"),
93 Rhythmic_column_engraver::process_acknowledged ()
99 note_column_ = make_item ("NoteColumn", rheads_[0]->self_scm ());
101 spacing_ = make_item ("NoteSpacing", SCM_EOL);
102 add_spacing_item (note_column_);
105 for (vsize i = 0; i < rheads_.size (); i++)
107 if (!rheads_[i]->get_parent (X_AXIS))
108 Note_column::add_head (note_column_, rheads_[i]);
116 && !dotcol_->get_parent (X_AXIS))
117 Note_column::set_dotcol (note_column_, dotcol_);
120 && !stem_->get_parent (X_AXIS))
122 Note_column::set_stem (note_column_, stem_);
129 Rhythmic_column_engraver::acknowledge_stem (Grob_info i)
135 Rhythmic_column_engraver::acknowledge_rhythmic_head (Grob_info i)
137 rheads_.push_back (i.grob ());
141 Rhythmic_column_engraver::acknowledge_dot_column (Grob_info i)
147 Rhythmic_column_engraver::stop_translation_timestep ()
153 last_spacing_ = spacing_;
161 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, dot_column);
162 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, stem);
163 ADD_ACKNOWLEDGER (Rhythmic_column_engraver, rhythmic_head);
165 ADD_TRANSLATOR (Rhythmic_column_engraver,
166 /* doc */ "Generates NoteColumn, an objects that groups stems, noteheads and rests.",
167 /* create */ "NoteColumn NoteSpacing",