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     {
  38         lyric_item_p_ =  new Text_item (lreq_l_->tdef_p_);
  39
  40         lyric_item_p_->translate (paper()->note_width ()/2 , X_AXIS);
  41         lyric_item_p_->dir_ = DOWN;
  42         lyric_item_p_->fat_b_ = true;
  43         announce_element (Score_elem_info (lyric_item_p_, lreq_l_));
  44     }
  45 }
  46
  47 void
  48 Lyric_engraver::do_post_move_processing()
  49 {
  50   lreq_l_ =0;
  51 }
  52
  53 void
  54 Lyric_engraver::do_pre_move_processing()
  55 {
  56   if (lyric_item_p_)
  57     {
  58         typeset_element (lyric_item_p_);
  59         lyric_item_p_ =0;
  60     }
  61 }
  62
  63
  64 IMPLEMENT_IS_TYPE_B1(Lyric_engraver,Engraver);
  65 ADD_THIS_ENGRAVER(Lyric_engraver);