canvas/canvas/arrow.h

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/*
 * Copyright (C) 2012 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2013-2014 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
 *
 * 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_ARROW_H__
#define __CANVAS_ARROW_H__
 
#include "canvas/visibility.h"
#include "canvas/container.h"
 
namespace ArdourCanvas {
 
class Canvas;
class Line;
class Polygon;
 
class LIBCANVAS_API Arrow : public Container
{
public:
        Arrow (Canvas*);
        Arrow (Item*);
 
        void compute_bounding_box () const;
 
        void set_show_head (int, bool);
        void set_head_outward (int, bool);
        void set_head_height (int, Distance);
        void set_head_width (int, Distance);
        void set_outline_width (Distance);
        void set_color (Gtkmm2ext::Color);
 
        Coord x () const;
        Coord y1 () const;
 
        void set_x (Coord);
        void set_y0 (Coord);
        void set_y1 (Coord);
 
        bool covers (Duple const &) const;
 
private:
        void setup_polygon (int);
        void setup ();
 
        struct Head {
                Polygon* polygon; 
                bool outward;     
                Distance height;  
                Distance width;   
        };
 
        Head _heads[2];
 
        Line* _line;
};
 
}
 
#endif