circle.h

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/***************************************************************************
 *   Copyright (C) 2004 by Rick L. Vinyard, Jr.                            *
 *   rvinyard@cs.nmsu.edu                                                  *
 *                                                                         *
 *   This file is part of the papyrus library.                             *
 *                                                                         *
 *   papyrus is free software; you can redistribute it and/or modify       *
 *   it under the terms of the GNU Lesser General Public License           *
 *   version 3.0 as published by the Free Software Foundation.             *
 *                                                                         *
 *   papyrus 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 Lesser General Public License version 3.0 for more details.       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with the papyrus library. If not, see                   *
 *   <http://www.gnu.org/licenses/>.                                       *
 ***************************************************************************/
#ifndef PAPYRUSCIRCLE_H
#define PAPYRUSCIRCLE_H

#include <papyrus/shape.h>

namespace Papyrus
{

  class Circle : public Shape
  {
    protected:

      Circle ( const Glib::ustring& id, double radius, Fill::pointer fill, Stroke::pointer stroke );

      Circle( const AttributeValueMap& avmap );

    public:
      PAPYRUS_DRAWABLE(Circle);

      static Circle::pointer create ( double radius = 1.0,
                                      Fill::pointer fill = Fill::pointer(),
                                      Stroke::pointer stroke = Stroke::pointer()
                                    );

      static Circle::pointer create ( const Glib::ustring& id,
                                      double radius = 1.0,
                                      Fill::pointer fill = Fill::pointer(),
                                      Stroke::pointer stroke = Stroke::pointer()
                                    );

      static Circle::pointer create( const AttributeValueMap& avmap );

      virtual ~Circle();

      virtual void set( const AttributeValueMap& avmap );

      double radius() const;

      void set_radius ( double r );

      sigc::signal<void> signal_radius();

      virtual void draw_shape( Context& cairo ) const;

      virtual Glib::ustring svg ( unsigned depth=0 );

    protected:
      
      double m_radius;

      sigc::signal<void> m_signal_radius;

      virtual Region calculate_extents(const Matrix& m = Matrix::Identity, ExtentsPerformance ep = EXTENTS_QUICK) const;

  };

}

#endif