lily/include/chord-tremolo-engraver.hh

   1 /*
   2   chord-tremolo-engraver.hh -- declare Chord_tremolo_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7            Jan Nieuwenhuizen <janneke@gnu.org>
   8 */
   9
  10
  11 #ifndef Chord_tremolo_ENGRAVER_HH
  12 #define Chord_tremolo_ENGRAVER_HH
  13
  14 #include "engraver.hh"
  15 #include "drul-array.hh"
  16
  17 /**
  18   Generate an abbreviation beam.  Eat stems.
  19
  20   UGH. Derive me from Beam_engraver.
  21
  22  */
  23 class Chord_tremolo_engraver : public Engraver
  24 {
  25 public:
  26   VIRTUAL_COPY_CONS(Translator);
  27
  28
  29   Chord_tremolo_engraver();
  30
  31 protected:
  32   virtual void do_removal_processing();
  33   virtual void do_process_requests();
  34   virtual bool do_try_music (Music*);
  35   virtual void acknowledge_element (Score_element_info);
  36   virtual void do_pre_move_processing();
  37   virtual void do_post_move_processing();
  38
  39 private:
  40   void typeset_beam ();
  41   Drul_array<Chord_tremolo_req*> reqs_drul_;
  42   Chord_tremolo_req* prev_start_req_;
  43   Beam* abeam_p_;
  44   Beam* finished_abeam_p_;
  45 };
  46
  47 #endif // Chord_tremolo_ENGRAVER_HH