lily/base-span-bar-engraver.cc

   1 /*
   2   span-bar-grav.cc -- implement Base_span_bar_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "dimension-cache.hh"
  10 #include "lily-guile.hh"
  11 #include "span-bar.hh"
  12 #include "base-span-bar-engraver.hh"
  13 #include "axis-align-spanner.hh"
  14
  15 Base_span_bar_engraver::Base_span_bar_engraver()
  16 {
  17   spanbar_p_ =0;
  18   use_priority_b_ = true;
  19   break_priority_i_ = 0;
  20 }
  21
  22 Span_bar*
  23 Base_span_bar_engraver::get_span_bar_p() const
  24 {
  25   return new Span_bar;
  26 }
  27
  28
  29 void
  30 Base_span_bar_engraver::acknowledge_element (Score_element_info i)
  31 {
  32   int depth = i.origin_trans_l_arr_.size();
  33   if (depth > 1
  34       && dynamic_cast<Bar *> (i.elem_l_))
  35     {
  36       bar_l_arr_.push (dynamic_cast<Bar *> (i.elem_l_));
  37
  38       if (bar_l_arr_.size() >= 2 && !spanbar_p_)
  39         /*
  40           hmm, i do want a bracket with one staff some times, but not always
  41           if (bar_l_arr_.size() >= 1 && !spanbar_p_)
  42
  43           --jcn
  44         */
  45
  46         /*
  47
  48           use a property?  get_property ("singleStaffBracket", 0) ?
  49
  50           --hwn
  51          */
  52         {
  53           spanbar_p_ = get_span_bar_p();
  54           spanbar_p_->dim_cache_[Y_AXIS]->parent_l_ = bar_l_arr_[0]->dim_cache_[Y_AXIS];
  55           String visnam =  String(name()) + "_visibility";
  56
  57           spanbar_p_->set_elt_property (visibility_lambda_scm_sym,
  58                                         gh_eval_str (visnam.ch_C()));
  59
  60           if (use_priority_b_)
  61             {
  62               spanbar_p_->set_elt_property (break_priority_scm_sym,
  63                                             gh_int2scm (break_priority_i_));
  64             }
  65           else
  66             {
  67               spanbar_p_->dim_cache_[X_AXIS]->parent_l_ = bar_l_arr_[0]->dim_cache_[X_AXIS];
  68             }
  69
  70           announce_element (Score_element_info (spanbar_p_,0));
  71           if (spanbar_p_->type_str_.empty_b ())
  72             spanbar_p_-> type_str_ = bar_l_arr_[0]->type_str_;
  73         }
  74     }
  75 }
  76
  77 void
  78 Base_span_bar_engraver::do_pre_move_processing()
  79 {
  80   if (spanbar_p_)
  81     {
  82       for (int i=0; i < bar_l_arr_.size() ; i++)
  83         spanbar_p_->add_bar (bar_l_arr_[i]);
  84       typeset_element (spanbar_p_);
  85       spanbar_p_ =0;
  86     }
  87   bar_l_arr_.set_size (0);
  88 }
  89
  90
  91
  92 ADD_THIS_TRANSLATOR(Base_span_bar_engraver);