/*
  key-performer.hh -- declare Key_performer

  source file of the GNU LilyPond music typesetter

  (c)  1997--1999 Jan Nieuwenhuizen <janneke@gnu.org>
*/

#ifndef KEY_PERFOMER_HH
#define KEY_PERFOMER_HH

#include "lily-proto.hh"
#include "performer.hh"

class Key_performer : public Performer
{
public:
  VIRTUAL_COPY_CONS(Translator);
  
  Key_performer();
  ~Key_performer();

protected:
  void do_print() const;
  virtual bool do_try_music (Music* req_l);
  virtual void do_process_requests ();
  virtual void do_pre_move_processing ();

private:
  Key_change_req* key_req_l_;
  Audio_key* audio_p_;
};

#endif // KEY_PERFOMER_HH
