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 ADD_THIS_TRANSLATOR (Breathing_sign_engraver);
  26
  27
  28 Breathing_sign_engraver::Breathing_sign_engraver()
  29 {
  30   breathing_sign_p_ = 0;
  31   breathing_sign_req_l_ = 0;
  32 }
  33
  34 bool
  35 Breathing_sign_engraver::do_try_music (Music*r_l)
  36 {
  37   if (Breathing_sign_req  * b= dynamic_cast <Breathing_sign_req *> (r_l)) {
  38     breathing_sign_req_l_ = b;
  39     return true;
  40   }
  41
  42   return false;
  43 }
  44
  45 void
  46 Breathing_sign_engraver::do_process_requests()
  47 {
  48   if(breathing_sign_req_l_) {
  49     breathing_sign_p_ = new Breathing_sign;
  50     Staff_symbol_referencer_interface st (breathing_sign_p_);
  51     st.set_interface ();
  52
  53     announce_element (Score_element_info (breathing_sign_p_, breathing_sign_req_l_));
  54   }
  55 }
  56
  57 void
  58 Breathing_sign_engraver::do_pre_move_processing()
  59 {
  60   if(breathing_sign_p_) {
  61     typeset_element(breathing_sign_p_);
  62     breathing_sign_p_ = 0;
  63   }
  64 }
  65
  66 void
  67 Breathing_sign_engraver::do_post_move_processing()
  68 {
  69     breathing_sign_req_l_ = 0;
  70 }