lily/slur-engraver.cc

   1 /*
   2   slur-grav.cc -- implement Slur_engraver
   3
   4   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   5 */
   6
   7 #include "proto.hh"
   8 #include "musical-request.hh"
   9 #include "slur-engraver.hh"
  10 #include "slur.hh"
  11 #include "debug.hh"
  12 #include "note-column.hh"
  13
  14 bool
  15 Slur_engraver::do_try_music (Music *req_l)
  16 {
  17   if (Span_req *sl = dynamic_cast <Span_req *> (req_l))
  18     {
  19       if (sl->span_type_str_ != "slur")
  20         return false;
  21       new_slur_req_l_arr_.push (sl);
  22       return true;
  23     }
  24   return false;
  25 }
  26
  27 void
  28 Slur_engraver::acknowledge_element (Score_element_info info)
  29 {
  30   if (dynamic_cast<Note_column *> (info.elem_l_))
  31     {
  32       Note_column *col_l =dynamic_cast<Note_column *> (info.elem_l_) ;// ugh
  33       for (int i = 0; i < slur_l_stack_.size(); i++)
  34         slur_l_stack_[i]->add_column (col_l);
  35       for (int i = 0; i < end_slur_l_arr_.size(); i++)
  36         end_slur_l_arr_[i]->add_column (col_l);
  37     }
  38 }
  39
  40 void
  41 Slur_engraver::do_removal_processing ()
  42 {
  43   for (int i = 0; i < slur_l_stack_.size(); i++)
  44     {
  45       typeset_element (slur_l_stack_[i]);
  46     }
  47   slur_l_stack_.clear ();
  48   for (int i=0; i < requests_arr_.size(); i++)
  49     {
  50       requests_arr_[i]->warning (_ ("unterminated slur"));
  51     }
  52 }
  53
  54 void
  55 Slur_engraver::do_process_requests()
  56 {
  57   Array<Slur*> start_slur_l_arr_;
  58   for (int i=0; i< new_slur_req_l_arr_.size(); i++)
  59     {
  60       Span_req* slur_req_l = new_slur_req_l_arr_[i];
  61       // end slur: move the slur to other array
  62       if (slur_req_l->span_dir_ == STOP)
  63         {
  64           if (slur_l_stack_.empty())
  65
  66             slur_req_l->warning (_f ("can't find both ends of %s", _("slur")));
  67           else
  68             {
  69               end_slur_l_arr_.push (slur_l_stack_.pop());
  70               requests_arr_.pop();
  71             }
  72         }
  73       else  if (slur_req_l->span_dir_ == START)
  74         {
  75           // push a new slur onto stack.
  76           //(use temp. array to wait for all slur STOPs)
  77           Slur * s_p =new Slur;
  78           Scalar prop = get_property ("slurdash", 0);
  79           if (prop.isnum_b ())
  80             s_p->set_elt_property (dashed_scm_sym, gh_int2scm(prop));
  81
  82           requests_arr_.push (slur_req_l);
  83           start_slur_l_arr_.push (s_p);
  84           announce_element (Score_element_info (s_p, slur_req_l));
  85         }
  86     }
  87   for (int i=0; i < start_slur_l_arr_.size(); i++)
  88     slur_l_stack_.push (start_slur_l_arr_[i]);
  89 }
  90
  91 void
  92 Slur_engraver::do_pre_move_processing()
  93 {
  94   Scalar dir (get_property ("slurydirection", 0));
  95   Scalar dir2 (get_property ("ydirection", 0));
  96
  97   Direction slurdir = CENTER;
  98   if (dir.length_i () && dir.isnum_b ())
  99     slurdir = (Direction) sign (int(dir));
 100   else if (dir2.length_i () && dir2.isnum_b ())
 101     slurdir = (Direction) sign (int (dir2));
 102
 103   for (int i = 0; i < end_slur_l_arr_.size(); i++)
 104     {
 105       end_slur_l_arr_[i]->dir_ = slurdir;
 106       typeset_element (end_slur_l_arr_[i]);
 107     }
 108   end_slur_l_arr_.clear();
 109 }
 110
 111 void
 112 Slur_engraver::do_post_move_processing()
 113 {
 114   new_slur_req_l_arr_.clear();
 115 }
 116
 117
 118 ADD_THIS_TRANSLATOR(Slur_engraver);