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--1998 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 #include "main.hh"
  16
  17 Lyric_engraver::Lyric_engraver()
  18 {
  19   lreq_l_ =0;
  20   lyric_item_p_ =0;
  21 }
  22
  23 bool
  24 Lyric_engraver::do_try_request (Request*r)
  25 {
  26   Musical_req * m =r->musical();
  27   if (!m || ! m->lreq_l())
  28     return false;
  29   lreq_l_ = m->lreq_l();
  30
  31   return true;
  32 }
  33
  34 void
  35 Lyric_engraver::do_process_requests()
  36 {
  37   if (lreq_l_)
  38     {
  39       lyric_item_p_ =  new Text_item (lreq_l_->tdef_p_);
  40
  41       lyric_item_p_->translate_axis (paper()->note_width ()/2 , X_AXIS);
  42       lyric_item_p_->dir_ = DOWN;
  43       lyric_item_p_->fat_b_ = true;
  44       announce_element (Score_elem_info (lyric_item_p_, lreq_l_));
  45     }
  46 }
  47
  48 void
  49 Lyric_engraver::do_post_move_processing()
  50 {
  51   lreq_l_ =0;
  52 }
  53
  54 void
  55 Lyric_engraver::do_pre_move_processing()
  56 {
  57   if (lyric_item_p_)
  58     {
  59       /*
  60         urg. should check-out deriving from staff/line spanner
  61         */
  62       if (experimental_features_global_b)
  63         {
  64           if (lyric_item_p_->tdef_p_->static_name () == Text_def::static_name ())
  65             {
  66               Text_def* t = (Text_def*)lyric_item_p_->tdef_p_;
  67               t->text_str_ += "\\hrule 1mm 10mm 20mm";
  68             }
  69         }
  70       typeset_element (lyric_item_p_);
  71       lyric_item_p_ =0;
  72     }
  73 }
  74
  75
  76 IMPLEMENT_IS_TYPE_B1(Lyric_engraver,Engraver);
  77 ADD_THIS_TRANSLATOR(Lyric_engraver);