2 rest-collision-reg.cc -- implement Rest_collision_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "engraver.hh"
11 #include "rest-collision.hh"
12 #include "note-column.hh"
14 class Rest_collision_engraver : public Engraver
16 Item* rest_collision_;
18 Link_array<Grob> note_columns_;
20 virtual void acknowledge_grob (Grob_info);
21 virtual void process_acknowledged_grobs ();
22 virtual void stop_translation_timestep ();
24 TRANSLATOR_DECLARATIONS (Rest_collision_engraver);
27 Rest_collision_engraver::Rest_collision_engraver ()
34 Rest_collision_engraver::process_acknowledged_grobs ()
37 || note_columns_.is_empty ()
39 || (note_columns_.size () == rest_count_
43 rest_collision_ = make_item ("RestCollision", SCM_EOL);
46 for (int i=0; i < note_columns_.size (); i++)
47 Rest_collision::add_column (rest_collision_,note_columns_[i]);
51 Rest_collision_engraver::acknowledge_grob (Grob_info i)
53 if (Note_column::has_interface (i.grob_))
55 note_columns_.push (i.grob_);
56 if (Note_column::has_rests (i.grob_))
62 Rest_collision_engraver::stop_translation_timestep ()
65 note_columns_.clear ();
69 ENTER_DESCRIPTION (Rest_collision_engraver,
70 /* descr */ "Handles collisions of rests.",
71 /* creats*/ "RestCollision",
73 /* acks */ "note-column-interface",