lily/breathing-sign-engraver.cc

   1 /*
   2   breathing_sign-engraver.cc -- implement Breathing_sign_engraver
   3
   4   Copyright (C) 1999 Michael Krause
   5
   6   written for the GNU LilyPond music typesetter
   7
   8 TODO:
   9
  10   . Cancel any beams running through the breathing sign
  11     ([e8 \breathe f e f] should become [e8] \breathe [f e f])
  12   . Spacing is not yet completely pretty
  13
  14 */
  15
  16 #include "staff-symbol-referencer.hh"
  17 #include "breathing-sign-engraver.hh"
  18 #include "breathing-sign.hh"
  19 #include "musical-request.hh"
  20 #include "command-request.hh"
  21 #include "engraver-group-engraver.hh"
  22 #include "note-head.hh"
  23 #include "local-key-item.hh"
  24
  25
  26 Breathing_sign_engraver::Breathing_sign_engraver()
  27 {
  28   breathing_sign_p_ = 0;
  29   breathing_sign_req_l_ = 0;
  30 }
  31
  32 bool
  33 Breathing_sign_engraver::do_try_music (Music*r_l)
  34 {
  35   if (Breathing_sign_req  * b= dynamic_cast <Breathing_sign_req *> (r_l))
  36     {
  37       breathing_sign_req_l_ = b;
  38       return true;
  39     }
  40
  41   return false;
  42 }
  43
  44 void
  45 Breathing_sign_engraver::do_process_requests()
  46 {
  47   if(breathing_sign_req_l_)
  48     {
  49       breathing_sign_p_ = new Breathing_sign;
  50       breathing_sign_p_->set_elt_property ("break-aligned", SCM_BOOL_T);
  51       Staff_symbol_referencer_interface st (breathing_sign_p_);
  52       st.set_interface ();
  53
  54       announce_element (Score_element_info (breathing_sign_p_, breathing_sign_req_l_));
  55     }
  56 }
  57
  58 void
  59 Breathing_sign_engraver::do_pre_move_processing()
  60 {
  61   if(breathing_sign_p_)
  62     {
  63       typeset_element(breathing_sign_p_);
  64       breathing_sign_p_ = 0;
  65     }
  66 }
  67
  68 void
  69 Breathing_sign_engraver::do_post_move_processing()
  70 {
  71   breathing_sign_req_l_ = 0;
  72 }
  73
  74 ADD_THIS_TRANSLATOR(Breathing_sign_engraver);