+/*
+ spanner.cc -- implement Spanner
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 1996, 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
+
#include "debug.hh"
#include "spanner.hh"
#include "p-col.hh"
+#include "p-score.hh"
+#include "molecule.hh"
+#include "paper-outputter.hh"
+IMPLEMENT_IS_TYPE_B1(Spanner,Score_element);
+void
+Spanner::do_print() const
+{
+#ifndef NPRINT
+ DOUT << "Between " << spanned_drul_[LEFT]->name ()
+ << " and " << spanned_drul_[RIGHT]->name() << '\n';
+ if (broken_into_l_arr_.size())
+ {
+ DOUT << "with broken pieces:\n";
+ for (int i=0; i < broken_into_l_arr_.size (); i++)
+ broken_into_l_arr_[i]->print ();
+ }
+#endif
+}
void
-Spanner::do_print()const
+Spanner::break_into_pieces ()
{
- mtor << " (unknown) ";
+ if (broken_into_l_arr_.size())
+ return;
+
+ Item * left = spanned_drul_[LEFT];
+ Item * right = spanned_drul_[RIGHT];
+
+ if (left == right)
+ {
+ warning (_ ("left spanpoint is right spanpoint\n"));
+ return;
+ }
+
+ 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=1; i < break_cols.size(); i++)
+ {
+ Spanner* span_p = dynamic_cast<Spanner*> (clone());
+ Item *left = break_cols[i-1];
+ Item *right = break_cols[i];
+ if (!right->line_l())
+ right = right->find_prebroken_piece(LEFT);
+ if (!left->line_l())
+ left = left->find_prebroken_piece(RIGHT);
+
+ 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;
}
-Spanner*
-Spanner::broken_at(PCol*c1, PCol *c2)const
+void
+Spanner::set_my_columns()
{
- Spanner *span_p = do_break_at(c1,c2);
+ Direction i = (Direction)1;
+ do
+ {
+ if (!spanned_drul_[i]->line_l())
+ set_bounds(i,spanned_drul_[i]->find_prebroken_piece((Direction)-i));
+ }
+ while (flip(&i) != 1);
+}
+
- for (int i=0; i < dependants.size(); i++) {
- dependants[i]->substitute_dependency((Staff_elem*)this, span_p);
+void
+Spanner::set_bounds(Direction d, Item*i)
+{
+ 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);
+
+ if (spanned_drul_[Direction(-d)] == spanned_drul_[d]
+ && i)
+ warning (_f ("Spanner `%s\' with equal left and right spanpoints", name ()));
+}
+
+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();
}
-
- span_p->left = c1;
- span_p->right = c2;
-
- return span_p;
}
-Spanner::Spanner()
+Spanner*
+Spanner::access_Spanner ()
{
- left = right = 0;
+ return this;
}
+Spanner::Spanner ()
+{
+ unbroken_original_l_ =0;
+ spanned_drul_[LEFT]=0;
+ spanned_drul_[RIGHT]=0;
+}
+
+Spanner::Spanner (Spanner const &s)
+ :Score_element (s)
+{
+ spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;
+ unbroken_original_l_ = &s;
+}
+
+void
+Spanner::do_brew_molecule ()
+{
+ if (transparent_b_)
+ return ;
+ Molecule *output= brew_molecule_p ();
+ Offset left_off (spanned_drul_[LEFT]->absolute_coordinate(X_AXIS), 0);
+ Offset o = absolute_offset() + left_off;
+ pscore_l_->outputter_l_->output_molecule (output, o, name ());
+ delete output;
+}
Interval
-Spanner::width()const
+Spanner::do_width() const
{
- Real r = right->hpos;
- Real l = left->hpos;
- assert(*left < *right);
- 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()
+{
+ set_bounds (LEFT, 0);
+ set_bounds (RIGHT, 0);
+
+ if (unbroken_original_l_)
+ {
+ unbroken_original_l_->broken_into_l_arr_.substitute (this, 0);
+ unbroken_original_l_ =0;
+ }
+}
+
+void
+Spanner::do_junk_links()
+{
+ spanned_drul_[LEFT] = spanned_drul_[RIGHT] =0;
+}
+
+Array<Rod>
+Spanner::get_rods () const
+{
+ Array<Rod> r;
+ return r;
+}
+
+void
+Spanner::do_space_processing ()
+{
+ Array<Rod> rs (get_rods ());
+ for (int i=0; i < rs.size (); i++)
+ {
+ rs[i].add_to_cols ();
+ }
}