lily/note-column-grav.cc

   1 /*
   2   note-column-reg.cc -- implement Note_column_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "note-column-grav.hh"
  10 #include "note-head.hh"
  11 #include "stem.hh"
  12 #include "note-column.hh"
  13 #include "script.hh"
  14 #include "rest-column.hh"
  15
  16 bool
  17 Note_column_engraver::acceptable_elem_b(Score_elem const*elem_C)const
  18 {
  19     char const*nC = elem_C->name();
  20     return (nC == Script::static_name() || nC == Note_head::static_name()
  21             || nC == Stem::static_name());
  22 }
  23 Note_column*
  24 Note_column_engraver::note_col_l()
  25 {
  26     if (!ncol_p_){
  27         ncol_p_ = new Note_column;
  28         announce_element(Score_elem_info(ncol_p_, 0));
  29     }
  30     return ncol_p_;
  31 }
  32
  33 Rest_column *
  34 Note_column_engraver::rest_col_l()
  35 {
  36     if (!restcol_p_) {
  37         restcol_p_  = new Rest_column;
  38         announce_element(Score_elem_info(restcol_p_,0));
  39     }
  40     return restcol_p_;
  41 }
  42
  43 void
  44 Note_column_engraver::acknowledge_element(Score_elem_info i)
  45 {
  46     if (!acceptable_elem_b(i.elem_l_))
  47         return;
  48
  49
  50     char const*nC = i.elem_l_->name();
  51
  52     if (nC == Script::static_name()) {
  53         script_l_arr_.push((Script*)i.elem_l_->item());
  54     } else if (nC == Note_head::static_name()) {
  55         Note_head * h_l = (Note_head*)i.elem_l_->item();
  56         if (h_l->rest_b_)
  57             rest_col_l()->add(h_l);
  58         else
  59             note_col_l()->add(h_l);
  60     }
  61     else if (nC == Stem::static_name()){
  62         stem_l_ = (Stem*)i.elem_l_->item();
  63     }
  64 }
  65
  66 void
  67 Note_column_engraver::do_pre_move_processing()
  68 {
  69     Script_column *col_l = ( ncol_p_ ) ? ncol_p_ : restcol_p_;
  70     if (!col_l)
  71         return;
  72
  73     for (int i=0; i < script_l_arr_.size(); i++)
  74         col_l->add(script_l_arr_[i]);
  75
  76     if (stem_l_) {
  77         if (ncol_p_)
  78             ncol_p_->add(stem_l_);
  79         if (restcol_p_)
  80             restcol_p_->add(stem_l_);
  81     }
  82     if (restcol_p_) {
  83         if (! restcol_p_ -> dir_i_)
  84             restcol_p_->dir_i_ = dir_i_;
  85         typeset_element(restcol_p_);
  86         restcol_p_ =0;
  87     }
  88     if (ncol_p_) {
  89         if (!   ncol_p_->dir_i_ )
  90             ncol_p_->dir_i_ = dir_i_;
  91         if (! ncol_p_->h_shift_b_)
  92             ncol_p_->h_shift_b_ = h_shift_b_;
  93         typeset_element(ncol_p_);
  94         ncol_p_ =0;
  95     }
  96 }
  97
  98 void
  99 Note_column_engraver::do_post_move_processing()
 100 {
 101     script_l_arr_.set_size(0);
 102     stem_l_ =0;
 103 }
 104
 105 void
 106 Note_column_engraver::set_feature(Feature i)
 107 {
 108      if (i.type_ == "vdir")
 109         dir_i_ = i.value_;
 110      if (i.type_ == "hshift")
 111          h_shift_b_ = (bool)(int)i.value_;
 112 }
 113
 114 Note_column_engraver::Note_column_engraver()
 115 {
 116     dir_i_ =0;
 117     h_shift_b_ = false;
 118
 119     ncol_p_=0;
 120     restcol_p_ =0;
 121     do_post_move_processing();
 122 }
 123 IMPLEMENT_STATIC_NAME(Note_column_engraver);
 124 IMPLEMENT_IS_TYPE_B1(Note_column_engraver,Engraver);
 125 ADD_THIS_ENGRAVER(Note_column_engraver);