-Spanner::do_print()const
-{
-#ifndef NPRINT
- mtor << "Between col ";
-// huh? this does not work
-// mtor << ( left_col_l_ ? left_col_l_->rank_i() : "nop" );
- if ( left_col_l_ )
- mtor << left_col_l_->rank_i();
- else
- mtor << "nop";
- mtor << ", ";
-// mtor << ( right_col_l_ ? right_col_l_->rank_i() : "nop" );
- if ( right_col_l_ )
- mtor << right_col_l_->rank_i();
- else
- mtor << "nop";
- if (broken_into_l_arr_.size())
- mtor << "with broken pieces\n";
-#endif
+Spanner::do_break_processing ()
+{
+ //break_into_pieces
+ Item * left = spanned_drul_[LEFT];
+ Item * right = spanned_drul_[RIGHT];
+
+ if (!left || !right)
+ return;
+
+ /*
+ Check if our parent in X-direction spans equally wide
+ or wider than we do.
+ */
+ for (int a = X_AXIS; a < NO_AXES; a ++)
+ {
+ if (Spanner* parent = dynamic_cast<Spanner*> (get_parent ((Axis)a)))
+ {
+ if (!parent->spanned_rank_iv ().contains_b (this->spanned_rank_iv ()))
+ {
+ programming_error (to_string ("Spanner `%s' is not fully contained in parent spanner `%s'.",
+ name ().to_str0 (),
+ parent->name ().to_str0 ()));
+ }
+ }
+ }
+
+ if (get_system () || broken_b ())
+ return;
+
+ if (left == right)
+ {
+ /*
+ If we have a spanner spanning one column, we must break it
+ anyway because it might provide a parent for another item. */
+ Direction d = LEFT;
+ do
+ {
+ Item* bound = left->find_prebroken_piece (d);
+ if (!bound)
+ programming_error ("no broken bound");
+ else if (bound->get_system ())
+ {
+ Spanner * span = dynamic_cast<Spanner*> (clone ());
+ span->set_bound (LEFT, bound);
+ span->set_bound (RIGHT, bound);
+
+ assert (span->get_system ());
+ span->get_system ()->typeset_grob (span);
+ broken_intos_.push (span);
+ }
+ }
+ while ((flip (&d))!= LEFT);
+ }
+ else
+ {
+ Link_array<Item> break_points = pscore_->system_->broken_col_range (left,right);
+
+ break_points.insert (left,0);
+ break_points.push (right);
+
+ for (int i=1; i < break_points.size (); i++)
+ {
+ Drul_array<Item*> bounds;
+ bounds[LEFT] = break_points[i-1];
+ bounds[RIGHT] = break_points[i];
+ Direction d = LEFT;
+ do
+ {
+ if (!bounds[d]->get_system ())
+ bounds[d] = bounds[d]->find_prebroken_piece (- d);
+ }
+ while ((flip (&d))!= LEFT);
+
+ if (!bounds[LEFT] || ! bounds[RIGHT])
+ {
+ programming_error ("bounds of this piece aren't breakable. ");
+ continue;
+ }
+
+ Spanner *span = dynamic_cast<Spanner*> (clone ());
+ span->set_bound (LEFT,bounds[LEFT]);
+ span->set_bound (RIGHT,bounds[RIGHT]);
+
+ if (!bounds[LEFT]->get_system ()
+
+ || !bounds[RIGHT]->get_system ()
+ || bounds[LEFT]->get_system () != bounds[RIGHT]->get_system ())
+ {
+ programming_error ("bounds of spanner are invalid");
+ span->suicide ();
+ }
+ else
+ {
+ bounds[LEFT]->get_system ()->typeset_grob (span);
+ broken_intos_.push (span);
+ }
+ }
+ }
+ broken_intos_.sort (Spanner::compare);