lily/include/voice.hh

   1 /*
   2   voice.hh -- declare Voice
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #ifndef VOICE_HH
  10 #define VOICE_HH
  11
  12 #include "lily-proto.hh"
  13 #include "plist.hh"
  14 #include "moment.hh"
  15
  16 /** class for  horizontal stuff.
  17
  18     Voice is a ordered row of Voice_elements. It is strictly
  19     horizontal: you cannot have two rhythmic elements running parallel
  20     in a Voice. For proper processing, each Voice should have
  21     Group_change_req as a first element.
  22
  23     */
  24
  25 struct Voice {
  26     /** the elements, earliest first.
  27       Please use the member #add()# to add a new element
  28       */
  29     Pointer_list<Voice_element *> elts_;
  30     Moment start_;
  31
  32     /* *************** */
  33     Voice();
  34     Voice(Voice const&);
  35
  36     Moment when(Voice_element const *)const;
  37     Moment last() const;
  38     void transpose(Melodic_req const &)const;
  39     void add(Voice_element*);
  40     void print() const;
  41     void set_default_group(String id);
  42 };
  43
  44 #endif