arc.h

Go to the documentation of this file.

/***************************************************************************
 *   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 PAPYRUSARC_H
#define PAPYRUSARC_H

#include <cmath>

#include <papyrus/shape.h>

namespace Papyrus
{

  class Arc : public Shape
  {
    protected:

      Arc ( const Glib::ustring& id,
            double radius,
            double angle_start,
            double angle_end,
            Fill::pointer fill = Fill::pointer(),
            Stroke::pointer stroke = Stroke::pointer()
          );

    public:
      PAPYRUS_DRAWABLE(Arc);

      static pointer create ( double radius = 1.0,
                              double angle_start = 0.0,
                              double angle_end = M_PI / 2.0,
                              Fill::pointer fill = Fill::pointer(),
                              Stroke::pointer stroke = Stroke::pointer()
                            );

      static pointer create ( const Glib::ustring& id,
                              double radius = 1.0,
                              double angle_start = 0.0,
                              double angle_end = M_PI / 2.0,
                              Fill::pointer fill = Fill::pointer(),
                              Stroke::pointer stroke = Stroke::pointer()
                            );

      virtual ~Arc();

      double radius() const;

      void set_radius ( double r );

      double start_angle() const;

      double end_angle() const;

      void set_angles ( double start, double end );

      virtual void draw_shape ( Context& cairo ) const;

      sigc::signal<void> signal_radius();

      sigc::signal<void> signal_angle();

    protected:

      double m_radius;

      double m_angle_start;

      double m_angle_end;

      sigc::signal<void> m_signal_radius;

      sigc::signal<void> m_signal_angle;

  };

}

#endif