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 #include <typeinfo>
  16
  17 Bar_column_engraver::Bar_column_engraver()
  18 {
  19   bar_l_ =0;
  20   barcol_p_ =0;
  21   break_priority_i_ = 0;
  22 }
  23
  24 void
  25 Bar_column_engraver::do_creation_processing ()
  26 {
  27 }
  28
  29
  30 void
  31 Bar_column_engraver::do_process_requests ()
  32 {
  33   Scalar pri = get_property ("barColumnPriority", 0);
  34   if (pri.length_i() && pri.isnum_b ())
  35     {
  36       break_priority_i_ = int(pri);
  37     }
  38 }
  39
  40 void
  41 Bar_column_engraver::create_column ()
  42 {
  43   if (!barcol_p_)
  44     {
  45       barcol_p_ = new Bar_column;
  46       barcol_p_->breakable_b_ =true;
  47       barcol_p_->break_priority_i_ = break_priority_i_;
  48       announce_element (Score_element_info (barcol_p_, 0));
  49     }
  50 }
  51
  52
  53 void
  54 Bar_column_engraver::acknowledge_element (Score_element_info info)
  55 {
  56   Item * it = dynamic_cast <Item *> (info.elem_l_);
  57   if (!it)
  58     return;
  59   Script *s = dynamic_cast<Script*> (it);
  60   Bar *b = dynamic_cast<Bar*> (it);
  61   if (s
  62       && it->breakable_b_
  63       && info.origin_grav_l_arr_.size() == 1
  64       && it->break_priority_i_ == break_priority_i_)
  65     {
  66       create_column ();
  67       barcol_p_->add_script (s);
  68     }
  69   else if (info.origin_grav_l_arr_.size() == 1
  70            && it->break_priority_i_ == break_priority_i_
  71            && it->breakable_b_
  72            &&b)
  73
  74     {
  75       create_column ();
  76       barcol_p_->set_bar (b);
  77     }
  78 }
  79
  80
  81 void
  82 Bar_column_engraver::process_acknowledged ()
  83 {
  84 }
  85
  86
  87
  88 void
  89 Bar_column_engraver::do_pre_move_processing()
  90 {
  91   if (barcol_p_)
  92     {
  93       typeset_element (barcol_p_);
  94       barcol_p_ =0;
  95     }
  96 }
  97
  98 void
  99 Bar_column_engraver::do_post_move_processing()
 100 {
 101   script_l_arr_.clear();
 102   bar_l_ =0;
 103 }
 104
 105
 106 ADD_THIS_TRANSLATOR(Bar_column_engraver);