/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
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** file. Please review the following information to ensure the GNU General
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef FRICTIONAFFECTOR_H
#define FRICTIONAFFECTOR_H
#include "qquickparticleaffector_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QQuickFrictionAffector : public QQuickParticleAffector
{
    Q_OBJECT
    Q_PROPERTY(qreal factor READ factor WRITE setFactor NOTIFY factorChanged)
    Q_PROPERTY(qreal threshold READ threshold WRITE setThreshold NOTIFY thresholdChanged)
public:
    explicit QQuickFrictionAffector(QQuickItem *parent = 0);

    qreal factor() const
    {
        return m_factor;
    }

    qreal threshold() const
    {
        return m_threshold;
    }

protected:
    virtual bool affectParticle(QQuickParticleData *d, qreal dt);

signals:

    void factorChanged(qreal arg);
    void thresholdChanged(qreal arg);

public slots:

    void setFactor(qreal arg)
    {
        if (m_factor != arg) {
            m_factor = arg;
            emit factorChanged(arg);
        }
    }

    void setThreshold(qreal arg)
    {
        if (m_threshold != arg) {
            m_threshold = arg;
            emit thresholdChanged(arg);
        }
    }

private:
    qreal m_factor;
    qreal m_threshold;
};

QT_END_NAMESPACE
QT_END_HEADER
#endif // FRICTIONAFFECTOR_H