lollipop.h

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/*
 * Copyright (C) 2012 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2013-2014 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_LOLLIPOP_H__
#define __CANVAS_LOLLIPOP_H__
 
#include "canvas/item.h"
#include "canvas/outline.h"
#include "canvas/poly_line.h"
#include "canvas/visibility.h"
 
namespace ArdourCanvas {
 
/* A line with a circle of radius _radius drawn at (x, max (y0,y1))
 */
 
class LIBCANVAS_API Lollipop : public Item
{
public:
        Lollipop (Canvas*);
        Lollipop (Item*);
 
        void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
        void compute_bounding_box () const;
        bool covers (Duple const &) const;
 
        void set_radius (Coord);
        Coord radius() const { return _radius; }
 
        void set_length (Coord);
        Coord length() const { return _length; }
 
        /* Set origin, length, radius in one pass */
        void set (Duple const &, Coord, Coord);
        void set_x (Coord);
 
        Coord x ()  const { return _center.x; }
        Coord y0 () const { return _center.y; }
        Coord y1 () const { return _center.y + _length; }
 
        void set_bounding_parent (Item*);
 
  private:
        Duple _center;
        Coord _radius;
        Coord _length;
        Item* bounding_parent;
        bool  line_color_is_fill;
};
 
}
 
#endif