#ifndef adwaita_animationdata_h

#define adwaita_animationdata_h

/*************************************************************************

 * Copyright (C) 2014 by Hugo Pereira Da Costa <hugo.pereira@free.fr>    *

 *                                                                       *

 * 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 .        *

 *************************************************************************/

#include "adwaitaanimation.h"

#include <QEvent>

#include <QObject>

#include <QWidget>

#include <cmath>

namespace Adwaita

{

    //* base class

    class AnimationData: public QObject

    {

        Q_OBJECT

        public:

        //* constructor

        AnimationData( QObject* parent, QWidget* target ):

        QObject( parent ),

        _target( target ),

        _enabled( true )

        { Q_ASSERT( _target ); }

        //* destructor

        virtual ~AnimationData( void )

        {}

        //* duration

        virtual void setDuration( int ) = 0;

        //* steps

        static void setSteps( int value )

        { _steps = value; }

        //* enability

        virtual bool enabled( void ) const

        { return _enabled; }

        //* enability

        virtual void setEnabled( bool value )

        { _enabled = value; }

        //* target

        const WeakPointer<QWidget>& target( void ) const

        { return _target; }

        //* invalid opacity

        static const qreal OpacityInvalid;

        protected:

        //* setup animation

        virtual void setupAnimation( const Animation::Pointer& animation, const QByteArray& property );

        //* apply step

        virtual qreal digitize( const qreal& value ) const

        {

            if( _steps > 0 ) return std::floor( value*_steps )/_steps;

            else return value;

        }

        //* trigger target update

        virtual void setDirty( void ) const

        { if( _target ) _target.data()->update(); }

        private:

        //* guarded target

        WeakPointer<QWidget> _target;

        //* enability

        bool _enabled;

        //* steps

        static int _steps;

    };

}

#endif