lily/rhythmic-column-engraver.cc

   1 /*
   2   rhythmic-column-grav.cc -- implement Rhythmic_column_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 "slur.hh"
  11 #include "rhythmic-column-engraver.hh"
  12 #include "note-head.hh"
  13 #include "stem.hh"
  14 #include "note-column.hh"
  15 #include "dot-column.hh"
  16 #include "musical-request.hh"
  17
  18 Rhythmic_column_engraver::Rhythmic_column_engraver()
  19 {
  20   stem_l_ =0;
  21   ncol_p_=0;
  22   dotcol_l_ =0;
  23 }
  24
  25
  26 void
  27 Rhythmic_column_engraver::process_acknowledged ()
  28 {
  29   if (rhead_l_arr_.size ())
  30     {
  31       if (!ncol_p_)
  32         {
  33           ncol_p_ = new Note_column;
  34           announce_element (Score_element_info (ncol_p_, 0));
  35         }
  36
  37       for (int i=0; i < rhead_l_arr_.size (); i++)
  38         {
  39           if (!rhead_l_arr_[i]->parent_l(X_AXIS))
  40             ncol_p_->add_head (rhead_l_arr_[i]);
  41         }
  42       rhead_l_arr_.set_size (0);
  43     }
  44
  45
  46   if (ncol_p_)
  47     {
  48       if (dotcol_l_
  49           && !dotcol_l_->parent_l(X_AXIS))
  50         {
  51           ncol_p_->set_dotcol (dotcol_l_);
  52         }
  53
  54       if (stem_l_
  55           && !stem_l_->parent_l(X_AXIS))
  56         {
  57           ncol_p_->set_stem (stem_l_);
  58           stem_l_ = 0;
  59         }
  60
  61       SCM wg = get_property ("weAreGraceContext",0);
  62       bool wegrace = to_boolean (wg);
  63
  64       if (!wegrace)
  65         for (int i=0; i < grace_slur_endings_.size(); i++)
  66           grace_slur_endings_[i]->add_column (ncol_p_);
  67       grace_slur_endings_.clear ();
  68     }
  69 }
  70
  71 void
  72 Rhythmic_column_engraver::acknowledge_element (Score_element_info i)
  73 {
  74   SCM wg = get_property ("weAreGraceContext",0);
  75   bool wegrace = to_boolean (wg);
  76   if ((wegrace !=
  77       (i.elem_l_->get_elt_property ("grace") != SCM_UNDEFINED))
  78     && !dynamic_cast<Slur*> (i.elem_l_))
  79     return ;
  80
  81   Item * item =  dynamic_cast <Item *> (i.elem_l_);
  82   if (Stem*s=dynamic_cast<Stem *> (item))
  83     {
  84       stem_l_ = s;
  85     }
  86   else if (Rhythmic_head*r=dynamic_cast<Rhythmic_head *> (item))
  87     {
  88       rhead_l_arr_.push (r);
  89     }
  90   else if (Dot_column*d =dynamic_cast<Dot_column *> (item))
  91     {
  92       dotcol_l_ = d;
  93     }
  94   else if (Slur *s = dynamic_cast<Slur*> (i.elem_l_))
  95     {
  96       /*
  97         end slurs starting on grace notes
  98        */
  99
 100       if (s->get_elt_property ("grace") != SCM_UNDEFINED)
 101         grace_slur_endings_.push (s);
 102    }
 103 }
 104
 105 void
 106 Rhythmic_column_engraver::do_pre_move_processing()
 107 {
 108   if (ncol_p_)
 109     {
 110       typeset_element (ncol_p_);
 111       ncol_p_ =0;
 112     }
 113 }
 114
 115 void
 116 Rhythmic_column_engraver::do_post_move_processing()
 117 {
 118   grace_slur_endings_.clear ();
 119   dotcol_l_ =0;
 120   stem_l_ =0;
 121 }
 122
 123 ADD_THIS_TRANSLATOR(Rhythmic_column_engraver);
 124