TouchEvent.h

/*
   Copyright (C) 2015 Marc Boris Duerner
   Copyright (C) 2015 Laurentiu-Gheorghe Crisan
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
 
   As a special exception, you may use this file as part of a free
   software library without restriction. Specifically, if other files
   instantiate templates or use macros or inline functions from this
   file, or you compile this file and link it with other files to
   produce an executable, this file does not by itself cause the
   resulting executable to be covered by the GNU General Public
   License. This exception does not however invalidate any other
   reasons why the executable file might be covered by the GNU Library
   General Public License.
 
   This library 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
   Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301 USA
*/
 
#ifndef Pt_Forms_TouchEvent_h
#define Pt_Forms_TouchEvent_h
 
#include <Pt/Forms/Api.h>
#include <Pt/Forms/Widget.h>
#include <Pt/Gfx/Point.h>
#include <Pt/Event.h>
 
namespace Pt {
 
namespace Forms {

class TouchEvent : public Pt::BasicEvent<TouchEvent>
{
    private:
        enum Action
        {
            Move = 0,
            Press = 1,
            Release = 2
        };
 
    public:
        explicit TouchEvent()
        : _widgetId(0)
        , _widget()
        , _pos(0, 0)
        , _action(Move)
        , _trackingId(0)
        , _pressure(1.0)
        { }

        TouchEvent(Widget& widget)
        : _widgetId( widget.id() )
        , _widget(&widget)
        , _pos(0, 0)
        , _action(Move)
        , _trackingId(0)
        , _pressure(1.0)
        { }

        void clear()
        {
            _pos.set(0, 0);
            _action = Move;
            _trackingId = 0;
            _pressure = 1.0;
        }

        void setId(Pt::uint64_t widgetId)
        {
            _widgetId = widgetId;
        }

        Pt::uint64_t widgetId() const
        {
            return _widgetId;
        }

        Widget* widget() const
        {
            return _widget;
        }

        void setWidget(Widget* widget)
        {
            _widget = widget;
            _widgetId = widget ? widget->id() : 0;
        }

        const Gfx::PointF& position() const
        {
            return _pos;
        }

        void setPosition(const Gfx::PointF& pos)
        {
            _pos = pos;
        }

        double x() const
        {
            return _pos.x();
        }

        void setX(double x)
        {
            _pos.setX(x);
        }

        double y() const
        {
            return _pos.y();
        }

        void setY(double y)
        {
            _pos.setY(y);
        }

        Pt::uint32_t trackingId() const
        {
            return _trackingId;
        }

        void setTrackingId(Pt::uint32_t tid)
        {
            _trackingId = tid;
        }

        double pressure() const
        {
            return _pressure;
        }

        void setPressure(double p)
        {
            _pressure = p;
        }

        bool isMove() const
        {
            return _action == Move;
        }

        void setMove()
        {
            _action = Move;
        }

        bool isPressed() const
        {
             return _action == Move || _action == Press;
        }

        bool isPress() const
        {
            return _action == Press;
        }

        void setPress()
        {
            _action = Press;
        }

        bool isRelease() const
        {
            return _action == Release;
        }

        void setRelease()
        {
            _action = Release;
        }
 
    private:
        Pt::uint64_t  _widgetId;
        Widget*       _widget;
        Gfx::PointF   _pos;
        Action        _action;
        Pt::uint32_t  _trackingId;
        double        _pressure;
};
 
} // namespace
 
} // namespace
 
#endif