// Copyright (c) 2008  GeometryFactory Sarl (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you may redistribute it under
// the terms of the Q Public License version 1.0.
// See the file LICENSE.QPL distributed with CGAL.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
// 
//
// Author(s)     : Andreas Fabri <Andreas.Fabri@geometryfactory.com>
//                 Laurent Rineau <Laurent.Rineau@geometryfactory.com>

#ifndef CGAL_QT_LINE_GRAPHICS_ITEM_H
#define CGAL_QT_LINE_GRAPHICS_ITEM_H

#include <CGAL/Bbox_2.h>
#include <CGAL/Qt/PainterOstream.h>
#include <CGAL/Qt/GraphicsItem.h>
#include <CGAL/Qt/utility.h>

#include <QGraphicsScene>
#include <QPainter>
#include <QStyleOption>

namespace CGAL {
namespace Qt {

template <typename CK>
class LineGraphicsItem : public GraphicsItem
{
  typedef typename CK::Line_2 Line_2;

public:
  LineGraphicsItem();

  void modelChanged();

public:
  QRectF boundingRect() const;
  
  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
  

  const QPen& verticesPen() const
  {
    return this->vertices_pen;
  }

  const QPen& edgesPen() const
  {
    return edges_pen;
  }

  void setVerticesPen(const QPen& pen)
  {
    this->vertices_pen = pen;
  }

  void setEdgesPen(const QPen& pen)
  {
    edges_pen = pen;
  }
  
  void setLine(const Line_2& a);

  Line_2 line() const
  {
    return line_;
  }

protected:

  QPainter* m_painter;
  PainterOstream<CK> painterostream;


  QPen edges_pen;

  Line_2 line_;
};


template <typename CK>
void 
LineGraphicsItem<CK>::setLine(const Line_2& a)
{
  line_ = a;
  update();
}

template <typename CK>
LineGraphicsItem<CK>::LineGraphicsItem()
  : painterostream(0)
{
  this->hide();
  setZValue(13);
}

template <typename CK>
QRectF 
LineGraphicsItem<CK>::boundingRect() const
{
  std::cerr << "Enter boundingRect" << std::endl;
  if(isVisible()){
    std::cerr << "visible" << std::endl;
    QRectF rect = CGAL::Qt::viewportsBbox(scene());
    assert(rect.isValid());
    return rect;
  } else {
    std::cerr << "not visible" << std::endl;
    return QRectF();
  }
}




template <typename CK>
void 
LineGraphicsItem<CK>::paint(QPainter *painter, 
                                    const QStyleOptionGraphicsItem *option,
                                    QWidget * widget)
{
  painter->setPen(this->edgesPen());
  std::cerr << "in paint" << std::endl;
  painterostream = PainterOstream<CK>(painter, boundingRect());
  painterostream << line_;
}




template <typename CK>
void 
LineGraphicsItem<CK>::modelChanged()
{
  update();
}


} // namespace Qt
} // namespace CGAL

#endif // CGAL_QT_LINE_GRAPHICS_ITEM_H