arc.h

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/*
 * Copyright (C) 2013-2015 Paul Davis <paul@linuxaudiosystems.com>
 *
 * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef __CANVAS_ARC_H__
#define __CANVAS_ARC_H__
 
#include "canvas/fill.h"
#include "canvas/item.h"
#include "canvas/outline.h"
#include "canvas/visibility.h"
 
namespace ArdourCanvas {
 
class Canvas;
 
class LIBCANVAS_API Arc : public Item
{
public:
        Arc (Canvas*);
        Arc (Item*);
 
        void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
        void compute_bounding_box () const;
 
        void _size_allocate (Rect const & r);
 
        void set_center (Duple const &);
        void set_radius (Coord);
        void set_arc (double degrees);
        void set_start (double degrees);
 
        Duple center() const {
                return _center;
        }
        Coord radius () const {
                return _radius;
        }
        double arc_degrees () const {
                return _arc_degrees;
        }
        double start_degrees () const {
                return _start_degrees;
        }
 
        bool covers (Duple const &) const;
 
private:
        Duple  _center;
        Coord  _radius;
        double _arc_degrees;
        double _start_degrees;
};
 
}
 
#endif