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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** 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 and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QMLFOLLOW_H
#define QMLFOLLOW_H

#include <QtDeclarative/qmlpropertyvaluesource.h>
#include <QtDeclarative/qml.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QmlFollowPrivate;
class Q_DECLARATIVE_EXPORT QmlFollow : public QmlPropertyValueSource, 
                                 public QmlParserStatus
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QmlFollow)
    Q_INTERFACES(QmlParserStatus)

    Q_PROPERTY(qreal source READ sourceValue WRITE setSourceValue)
    Q_PROPERTY(qreal velocity READ velocity WRITE setVelocity)
    Q_PROPERTY(qreal spring READ spring WRITE setSpring)
    Q_PROPERTY(qreal damping READ damping WRITE setDamping)
    Q_PROPERTY(qreal epsilon READ epsilon WRITE setEpsilon)
    Q_PROPERTY(qreal modulus READ modulus WRITE setModulus)
    Q_PROPERTY(bool enabled READ enabled WRITE setEnabled)
    Q_PROPERTY(qreal followValue READ value NOTIFY valueChanged)
    Q_PROPERTY(qreal modulus READ modulus WRITE setModulus NOTIFY modulusChanged)

public:
    QmlFollow(QObject *parent=0);
    ~QmlFollow();

    virtual void setTarget(const QmlMetaProperty &);

    qreal sourceValue() const;
    void setSourceValue(qreal value);
    qreal velocity() const;
    void setVelocity(qreal velocity);
    qreal spring() const;
    void setSpring(qreal spring);
    qreal damping() const;
    void setDamping(qreal damping);
    qreal epsilon() const;
    void setEpsilon(qreal epsilon);
    qreal modulus() const;
    void setModulus(qreal modulus);
    bool enabled() const;
    void setEnabled(bool enabled);

    qreal value() const;

Q_SIGNALS:
    void valueChanged(qreal);
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QmlFollow)

QT_END_HEADER

#endif // QFXFOLLOW_H