2 rest-collision-engraver.cc -- implement Rest_collision_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
10 #include "engraver.hh"
11 #include "rest-collision.hh"
12 #include "note-column.hh"
15 class Rest_collision_engraver
: public Engraver
17 Item
*rest_collision_
;
19 vector
<Grob
*> note_columns_
;
21 DECLARE_ACKNOWLEDGER (note_column
);
22 void process_acknowledged ();
23 void stop_translation_timestep ();
25 TRANSLATOR_DECLARATIONS (Rest_collision_engraver
);
28 Rest_collision_engraver::Rest_collision_engraver ()
35 Rest_collision_engraver::process_acknowledged ()
38 || note_columns_
.empty ()
40 || (note_columns_
.size () == rest_count_
44 rest_collision_
= make_item ("RestCollision", SCM_EOL
);
46 for (vsize i
= 0; i
< note_columns_
.size (); i
++)
47 Rest_collision::add_column (rest_collision_
, note_columns_
[i
]);
51 Rest_collision_engraver::acknowledge_note_column (Grob_info i
)
53 note_columns_
.push_back (i
.grob ());
54 if (Note_column::has_rests (i
.grob ()))
59 Rest_collision_engraver::stop_translation_timestep ()
62 note_columns_
.clear ();
66 #include "translator.icc"
68 ADD_ACKNOWLEDGER (Rest_collision_engraver
, note_column
);
69 ADD_TRANSLATOR (Rest_collision_engraver
,
71 "Handle collisions of rests.",