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     breathing_sign_req_l_ = b;
  37     return true;
  38   }
  39
  40   return false;
  41 }
  42
  43 void
  44 Breathing_sign_engraver::do_process_requests()
  45 {
  46   if(breathing_sign_req_l_) {
  47     breathing_sign_p_ = new Breathing_sign;
  48     Staff_symbol_referencer_interface st (breathing_sign_p_);
  49     st.set_interface ();
  50
  51     announce_element (Score_element_info (breathing_sign_p_, breathing_sign_req_l_));
  52   }
  53 }
  54
  55 void
  56 Breathing_sign_engraver::do_pre_move_processing()
  57 {
  58   if(breathing_sign_p_) {
  59     typeset_element(breathing_sign_p_);
  60     breathing_sign_p_ = 0;
  61   }
  62 }
  63
  64 void
  65 Breathing_sign_engraver::do_post_move_processing()
  66 {
  67     breathing_sign_req_l_ = 0;
  68 }
  69
  70 ADD_THIS_TRANSLATOR(Breathing_sign_engraver);