+/*
+ spanner.cc -- implement Spanner
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 1996,1997 Han-Wen Nienhuys <hanwen@stack.nl>
+*/
+
#include "debug.hh"
#include "spanner.hh"
#include "p-col.hh"
+#include "p-score.hh"
-
-IMPLEMENT_STATIC_NAME(Spanner);
+IMPLEMENT_IS_TYPE_B1(Spanner,Score_elem);
void
-Spanner::do_print()const
+Spanner::do_print() const
{
- mtor << " (unknown) ";
+#ifndef NPRINT
+ DOUT << "Between col ";
+ if (broken_into_l_arr_.size())
+ DOUT << "with broken pieces\n";
+#endif
}
-Spanner*
-Spanner::broken_at(PCol*c1, PCol *c2)const
+void
+Spanner::break_into_pieces ()
{
- Spanner *span_p = do_break_at(c1,c2);
+ if (broken_into_l_arr_.size())
+ return;
+
+ Item * left = spanned_drul_[LEFT];
+ Item * right = spanned_drul_[RIGHT];
+
+
+ Link_array<Item> break_cols = pscore_l_->broken_col_range (left,right);
+ Link_array<Spanner> broken_into_l_arr;
+
+ break_cols.insert (left,0);
+ break_cols.push (right);
- for (int i=0; i < dependant_l_arr_.size(); i++) {
- dependant_l_arr_[i]->
- substitute_dependency((Staff_elem*)this, span_p);
+ for (int i=1; i < break_cols.size(); i++)
+ {
+ Spanner* span_p = clone()->spanner ();
+ left = break_cols[i-1];
+ right = break_cols[i];
+ if (!right->line_l())
+ right = right->find_prebroken_piece(-1);
+ if (!left->line_l())
+ left = left->find_prebroken_piece(1);
+
+ assert (left&&right && left->line_l() == right->line_l());
+
+ span_p->set_bounds(LEFT,left);
+ span_p->set_bounds(RIGHT,right);
+
+ pscore_l_->typeset_broken_spanner (span_p);
+ broken_into_l_arr.push (span_p);
}
+
+ broken_into_l_arr_ = broken_into_l_arr;
+}
+
+void
+Spanner::set_my_columns()
+{
+ Direction i = (Direction)1;
+ do
+ {
+ if (!spanned_drul_[i]->line_l())
+ set_bounds(i,spanned_drul_[i]->find_prebroken_piece(-i));
+ }
+ while ((i*=-1) != 1);
+}
+
+
+void
+Spanner::set_bounds(Direction d, Item*i)
+{
- span_p->left_col_l_ = c1;
- span_p->right_col_l_ = c2;
-
- return span_p;
+ if (spanned_drul_[d])
+ spanned_drul_[d]->attached_span_l_arr_.substitute(this,0);
+
+ spanned_drul_[d] =i;
+ if (i)
+ i->attached_span_l_arr_.push(this);
+
+ assert (!spanned_drul_[d] ||
+ spanned_drul_[Direction(-d)] != spanned_drul_[d]);
+
}
+void
+Spanner::do_break_processing()
+{
+ if (!line_l())
+ {
+ break_into_pieces ();
+ for (int i=0; i < broken_into_l_arr_.size(); i++)
+ broken_into_l_arr_[i]->handle_broken_dependencies();
+ }
+ else
+ {
+ handle_broken_dependencies();
+ }
+}
+
+
Spanner::Spanner()
{
- left_col_l_ = right_col_l_ = 0;
+ spanned_drul_[LEFT]=0;
+ spanned_drul_[RIGHT]=0;
}
+String
+Spanner::do_TeX_output_str () const
+{
+ Offset left_off (spanned_drul_[LEFT]->absolute_coordinate(X_AXIS), 0);
+ return make_TeX_string (absolute_offset() + left_off);
+}
Interval
-Spanner::do_width()const
+Spanner::do_width() const
{
- Real r = right_col_l_->hpos;
- Real l = left_col_l_->hpos;
- assert(*left_col_l_ < *right_col_l_);
- assert(r>=l);
+ Real l = spanned_drul_[LEFT]->absolute_coordinate (X_AXIS);
+ Real r = spanned_drul_[RIGHT]->absolute_coordinate (X_AXIS);
+ assert (r>=l);
- return Interval(0, r-l);
+ return Interval (0, r-l);
+}
+
+Line_of_score *
+Spanner::line_l() const
+{
+ if (!spanned_drul_[LEFT] || !spanned_drul_[RIGHT])
+ return 0;
+ if (spanned_drul_[LEFT]->line_l() != spanned_drul_[RIGHT]->line_l())
+ return 0;
+ return spanned_drul_[LEFT]->line_l();
+}
+
+
+Spanner*
+Spanner::find_broken_piece (Line_of_score*l) const
+{
+ for (int i=0; i < broken_into_l_arr_.size(); i++)
+ if (broken_into_l_arr_[i]->line_l() == l)
+ return broken_into_l_arr_[i];
+ return 0;
+
+}
+
+bool
+Spanner::broken_b() const
+{
+ return broken_into_l_arr_.size();
+}
+
+void
+Spanner::do_unlink()
+{
+ if (spanned_drul_[LEFT])
+ {
+ spanned_drul_[LEFT]->attached_span_l_arr_.substitute (this,0);
+ spanned_drul_[LEFT] =0;
+ }
+ if (spanned_drul_[RIGHT])
+ {
+ spanned_drul_[RIGHT]->attached_span_l_arr_.substitute (this,0);
+ spanned_drul_[RIGHT] = 0;
+ }
+}
+
+void
+Spanner::do_junk_links()
+{
+ spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;
}