control_point.h

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/*
 * Copyright (C) 2007-2011 David Robillard <d@drobilla.net>
 * Copyright (C) 2010-2012 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2012-2014 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 __ardour_control_point_h__
#define __ardour_control_point_h__
 
#include <sys/types.h>
#include <gdk/gdkevents.h>
 
#include "ardour/automation_list.h"
 
#include "selectable.h"
 
class AutomationLine;
class ControlPoint;
class PointSelection;
class TimeAxisView;
class AutomationTimeAxisView;
class Selectable;
class Selection;
 
namespace ArdourCanvas {
        class Rectangle;
        class Diamond;
        class Item;
}
 
class ControlPoint : public Selectable
{
public:
        ControlPoint (AutomationLine& al);
        ControlPoint (const ControlPoint&, bool dummy_arg_to_force_special_copy_constructor);
        virtual ~ControlPoint ();
 
        enum ShapeType {
                Full,
                Start,
                End
        };
 
        void move_to (double x, double y);
        void move_to (double x, double y, ShapeType);
        void reset (double x, double y, ARDOUR::AutomationList::iterator, uint32_t, ShapeType);
        double get_x() const { return _x; }
        double get_y() const { return _y; }
 
        void hide ();
        void show ();
        bool visible () const;
 
        double size () const {
                return _size;
        }
 
        void set_size (double);
        void set_color ();
 
        bool     can_slide() const          { return _can_slide; }
        void     set_can_slide(bool yn)     { _can_slide = yn; }
        uint32_t view_index() const         { return _view_index; }
        void     set_view_index(uint32_t i) { _view_index = i; }
 
        ArdourCanvas::Item& item() const;
 
        /* used from ~AutomationLine */
        void unset_item () { _item = 0 ; }
 
        ARDOUR::AutomationList::iterator model() const { return _model; }
        AutomationLine&                  line()  const { return _line; }
 
        static PBD::Signal1<void, ControlPoint *> CatchDeletion;
 
private:
        ArdourCanvas::Rectangle*        _item;
        AutomationLine&                  _line;
        ARDOUR::AutomationList::iterator _model;
        uint32_t                         _view_index;
        bool                             _can_slide;
        double                           _x;
        double                           _y;
        double                           _size;
        ShapeType                        _shape;
 
        virtual bool event_handler (GdkEvent*);
 
};
 
 
#endif /* __ardour_control_point_h__ */