lily/line-of-score.cc

   1 /*
   2   scoreline.cc -- implement Line_of_score
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1996,  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "line-of-score.hh"
  10 #include "paper-def.hh"
  11 #include "paper-outputter.hh"
  12 #include "paper-column.hh"
  13 #include "paper-score.hh"
  14 #include "warn.hh"
  15
  16 Line_of_score::Line_of_score()
  17 {
  18   set_axes (Y_AXIS,Y_AXIS);
  19 }
  20
  21 bool
  22 Line_of_score::contains_b (Paper_column const* c) const
  23 {
  24   return cols_.find_l ((Paper_column*)(c));
  25 }
  26
  27 // const?
  28 Line_of_score*
  29 Line_of_score::set_breaking (Array<Column_x_positions> const &breaking, int j) const
  30 {
  31   const Link_array<Paper_column> &curline (breaking[j].cols_);
  32   const Array<Real> &config (breaking[j].config_);
  33   Line_of_score *line_l=0;
  34
  35   line_l = dynamic_cast <Line_of_score*> (clone());
  36
  37   line_l->cols_ = curline;
  38   line_l->set_bounds(LEFT,curline[0]);
  39   line_l->set_bounds(RIGHT,curline.top());
  40
  41   for (int i=0; i < curline.size(); i++)
  42     {
  43       curline[i]->translate_axis (config[i],X_AXIS);
  44       curline[i]->line_l_ = dynamic_cast<Line_of_score*>(line_l);
  45     }
  46
  47   Breaking_information b;
  48   b.bounds_ = line_l->spanned_drul_;
  49   b.broken_spanner_l_ = line_l;
  50   b.line_l_ = line_l;
  51
  52   broken_info_.push (b);
  53
  54   return line_l;
  55 }
  56
  57 void
  58 Line_of_score::add_column (Paper_column*p)
  59 {
  60   cols_.push (p);
  61 }
  62
  63 void
  64 Line_of_score::do_print() const
  65 {
  66   Spanner::do_print();
  67   Axis_group_spanner::do_print ();
  68 }
  69
  70 Link_array<Score_element>
  71 Line_of_score::get_extra_dependencies () const
  72 {
  73   Link_array<Score_element> r (Axis_group_spanner::get_extra_dependencies ());
  74   for (int i=0; i < cols_.size (); i++)
  75     r.push (cols_[i]);
  76   return r;
  77 }
  78
  79 void
  80 Line_of_score::do_substitute_element_pointer (Score_element*o, Score_element*n)
  81 {
  82   if (Paper_column *p = dynamic_cast<Paper_column*>(o))
  83     cols_.substitute (p, dynamic_cast<Paper_column*>(n));
  84 }
  85
  86 void
  87 Line_of_score::output_all (bool last_line)
  88 {
  89   Interval i(extent(Y_AXIS));
  90   if (i.empty_b())
  91     warning ("Huh? Empty Line_of_score?");
  92   else
  93     translate_axis (- i[MAX], Y_AXIS);
  94
  95   pscore_l_->outputter_l_->start_line (i.length ());
  96   Super_element::output_all ();
  97   if (last_line)
  98     pscore_l_->outputter_l_->stop_last_line();
  99   else
 100     pscore_l_->outputter_l_->stop_line ();
 101 }