lily/lyric-grav.cc

   1 /*
   2   lyric-engraver.cc -- implement Lyric_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "lyric-engraver.hh"
  10 #include "musical-request.hh"
  11 #include "text-item.hh"
  12 #include "paper-def.hh"
  13 #include "lookup.hh"
  14 #include "paper-def.hh"
  15
  16 Lyric_engraver::Lyric_engraver()
  17 {
  18     lreq_l_ =0;
  19     lyric_item_p_ =0;
  20 }
  21
  22 bool
  23 Lyric_engraver::do_try_request(Request*r)
  24 {
  25     Musical_req * m =r->musical();
  26     if (!m || ! m->lreq_l())
  27         return false;
  28     lreq_l_ = m->lreq_l();
  29
  30     return true;
  31 }
  32
  33 void
  34 Lyric_engraver::do_process_requests()
  35 {
  36     if ( lreq_l_ ) {
  37         lyric_item_p_ =  new Text_item(lreq_l_->tdef_p_ );
  38
  39         lyric_item_p_->translate_x( paper()->note_width()/2 );
  40         lyric_item_p_->dir_i_ = -1;
  41         lyric_item_p_->fat_b_ = true;
  42         announce_element( Score_elem_info( lyric_item_p_, lreq_l_));
  43     }
  44 }
  45
  46 void
  47 Lyric_engraver::do_post_move_processing()
  48 {
  49     lreq_l_ =0;
  50 }
  51
  52 void
  53 Lyric_engraver::do_pre_move_processing()
  54 {
  55     if ( lyric_item_p_ ){
  56         typeset_element( lyric_item_p_);
  57         lyric_item_p_ =0;
  58     }
  59 }
  60
  61
  62 IMPLEMENT_IS_TYPE_B1(Lyric_engraver,Engraver);
  63 ADD_THIS_ENGRAVER(Lyric_engraver);