
/*

  KLayout Layout Viewer
  Copyright (C) 2006-2020 Matthias Koefferlein

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

*/


#ifndef HDR_dbAsIfFlatEdgePairs
#define HDR_dbAsIfFlatEdgePairs

#include "dbCommon.h"

#include "dbEdgePairsDelegate.h"

namespace db {

/**
 *  @brief Provides default flat implementations
 */
class DB_PUBLIC AsIfFlatEdgePairs
  : public EdgePairsDelegate
{
public:
  AsIfFlatEdgePairs ();
  virtual ~AsIfFlatEdgePairs ();

  virtual size_t size () const;
  virtual std::string to_string (size_t) const;
  virtual Box bbox () const;

  virtual EdgePairsDelegate *filter_in_place (const EdgePairFilterBase &filter)
  {
    return filtered (filter);
  }

  virtual EdgePairsDelegate *filtered (const EdgePairFilterBase &) const;

  virtual EdgePairsDelegate *add_in_place (const EdgePairs &other)
  {
    return add (other);
  }

  virtual EdgePairsDelegate *add (const EdgePairs &other) const;

  virtual RegionDelegate *polygons (db::Coord e) const;
  virtual EdgesDelegate *edges () const;
  virtual EdgesDelegate *first_edges () const;
  virtual EdgesDelegate *second_edges () const;

  virtual EdgePairsDelegate *in (const EdgePairs &, bool) const;

  virtual bool equals (const EdgePairs &other) const;
  virtual bool less (const EdgePairs &other) const;

  virtual void insert_into (Layout *layout, db::cell_index_type into_cell, unsigned int into_layer) const;
  virtual void insert_into_as_polygons (Layout *layout, db::cell_index_type into_cell, unsigned int into_layer, db::Coord enl) const;

protected:
  void update_bbox (const db::Box &box);
  void invalidate_bbox ();

private:
  AsIfFlatEdgePairs &operator= (const AsIfFlatEdgePairs &other);

  mutable bool m_bbox_valid;
  mutable db::Box m_bbox;

  virtual db::Box compute_bbox () const;
};

}

#endif

