lily/bar-column-engraver.cc

   1 /*
   2   bar-column-grav.cc -- implement Bar_column_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9
  10 #include "bar-column-engraver.hh"
  11 #include "bar-column.hh"
  12 #include "request.hh"
  13 #include "script.hh"
  14 #include "bar.hh"
  15
  16 Bar_column_engraver::Bar_column_engraver()
  17 {
  18   bar_l_ =0;
  19   barcol_p_ =0;
  20   break_priority_i_ = 0;
  21 }
  22
  23 void
  24 Bar_column_engraver::do_creation_processing ()
  25 {
  26 }
  27
  28
  29 void
  30 Bar_column_engraver::do_process_requests ()
  31 {
  32   Scalar pri = get_property ("barColumnPriority");
  33   if (pri.length_i() && pri.isnum_b ())
  34     {
  35       break_priority_i_ = int(pri);
  36     }
  37 }
  38
  39 void
  40 Bar_column_engraver::create_column ()
  41 {
  42   if (!barcol_p_)
  43     {
  44       barcol_p_ = new Bar_column;
  45       barcol_p_->breakable_b_ =true;
  46       barcol_p_->break_priority_i_ = break_priority_i_;
  47       announce_element (Score_element_info (barcol_p_, 0));
  48     }
  49 }
  50
  51
  52 void
  53 Bar_column_engraver::acknowledge_element (Score_element_info info)
  54 {
  55   Item * it = info.elem_l_->access_Item ();
  56   if (!it)
  57     return;
  58
  59   if (it->is_type_b (Script::static_name())
  60       && it->breakable_b_
  61       && info.origin_grav_l_arr_.size() == 1
  62       && it->break_priority_i_ == break_priority_i_)
  63     {
  64       create_column ();
  65       barcol_p_->add_script ((Script*)it);
  66     }
  67   else if (info.origin_grav_l_arr_.size() == 1
  68            && it->break_priority_i_ == break_priority_i_
  69            && it->breakable_b_
  70            && it->is_type_b (Bar::static_name()))
  71     {
  72       create_column ();
  73       barcol_p_->set_bar ( (Bar*)it);
  74     }
  75 }
  76
  77
  78 void
  79 Bar_column_engraver::process_acknowledged ()
  80 {
  81 }
  82
  83
  84
  85 void
  86 Bar_column_engraver::do_pre_move_processing()
  87 {
  88   if (barcol_p_)
  89     {
  90       typeset_element (barcol_p_);
  91       barcol_p_ =0;
  92     }
  93 }
  94
  95 void
  96 Bar_column_engraver::do_post_move_processing()
  97 {
  98   script_l_arr_.clear();
  99   bar_l_ =0;
 100 }
 101
 102 IMPLEMENT_IS_TYPE_B1(Bar_column_engraver, Engraver);
 103 ADD_THIS_TRANSLATOR(Bar_column_engraver);