lily/lyric-engraver.cc

   1 /*
   2   lyric-engraver.cc -- implement Lyric_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 #include "lyric-engraver.hh"
  11 #include "musical-request.hh"
  12 #include "text-item.hh"
  13 #include "paper-def.hh"
  14 #include "lookup.hh"
  15
  16 ADD_THIS_TRANSLATOR (Lyric_engraver);
  17
  18
  19 Lyric_engraver::Lyric_engraver()
  20 {
  21   text_p_ =0;
  22   req_l_ =0;
  23 }
  24
  25 bool
  26 Lyric_engraver::do_try_music (Music*r)
  27 {
  28   if (Lyric_req* l = dynamic_cast <Lyric_req *> (r))
  29     {
  30       if (req_l_)
  31         return false;
  32       req_l_ =l;
  33       return true;
  34     }
  35   return false;
  36 }
  37
  38 void
  39 Lyric_engraver::do_process_requests()
  40 {
  41   if (req_l_)
  42     {
  43       text_p_=  new Text_item;
  44
  45       text_p_->set_elt_property ("text",
  46                                  ly_str02scm   ((req_l_->text_str_ + " ").ch_C ()));
  47       text_p_->set_elt_property ("non-rhythmic", SCM_BOOL_T);
  48       announce_element (Score_element_info (text_p_, req_l_));
  49     }
  50 }
  51
  52 void
  53 Lyric_engraver::do_pre_move_processing()
  54 {
  55   if (text_p_)
  56     {
  57       typeset_element (text_p_);
  58       text_p_ =0;
  59     }
  60 }
  61
  62 void
  63 Lyric_engraver::do_post_move_processing ()
  64 {
  65   req_l_ =0;
  66 }
  67
  68