control_point.h

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/*
    Copyright (C) 2002-2007 Paul Davis

    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., 675 Mass Ave, Cambridge, MA 02139, 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, 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;

        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__ */