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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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****************************************************************************/

#ifndef QQUICKWHEELAREA_P_H
#define QQUICKWHEELAREA_P_H

#include <QtGui/qevent.h>
#include <QtQuick/qquickitem.h>

QT_BEGIN_NAMESPACE

class QQuickWheelArea : public QQuickItem
{
    Q_OBJECT
    Q_PROPERTY(qreal verticalDelta READ verticalDelta WRITE setVerticalDelta NOTIFY verticalWheelMoved)
    Q_PROPERTY(qreal horizontalDelta READ horizontalDelta WRITE setHorizontalDelta NOTIFY horizontalWheelMoved)
    Q_PROPERTY(qreal horizontalMinimumValue READ horizontalMinimumValue WRITE setHorizontalMinimumValue)
    Q_PROPERTY(qreal horizontalMaximumValue READ horizontalMaximumValue WRITE setHorizontalMaximumValue)
    Q_PROPERTY(qreal verticalMinimumValue READ verticalMinimumValue WRITE setVerticalMinimumValue)
    Q_PROPERTY(qreal verticalMaximumValue READ verticalMaximumValue WRITE setVerticalMaximumValue)
    Q_PROPERTY(qreal horizontalValue READ horizontalValue WRITE setHorizontalValue)
    Q_PROPERTY(qreal verticalValue READ verticalValue WRITE setVerticalValue)
    Q_PROPERTY(qreal scrollSpeed READ scrollSpeed WRITE setScrollSpeed NOTIFY scrollSpeedChanged)
    Q_PROPERTY(bool active READ isActive WRITE setActive NOTIFY activeChanged)

public:
    QQuickWheelArea(QQuickItem *parent = 0);
    virtual ~QQuickWheelArea();

    void setHorizontalMinimumValue(qreal value);
    qreal horizontalMinimumValue() const;

    void setHorizontalMaximumValue(qreal value);
    qreal horizontalMaximumValue() const;

    void setVerticalMinimumValue(qreal value);
    qreal verticalMinimumValue() const;

    void setVerticalMaximumValue(qreal value);
    qreal verticalMaximumValue() const;

    void setHorizontalValue(qreal value);
    qreal horizontalValue() const;

    void setVerticalValue(qreal value);
    qreal verticalValue() const;

    void setVerticalDelta(qreal value);
    qreal verticalDelta() const;

    void setHorizontalDelta(qreal value);
    qreal horizontalDelta() const;

    void setScrollSpeed(qreal value);
    qreal scrollSpeed() const;

    bool isActive() const;
    void setActive(bool active);

    void wheelEvent(QWheelEvent *event);

    bool isAtXEnd() const;
    bool isAtXBeginning() const;
    bool isAtYEnd() const;
    bool isAtYBeginning() const;

Q_SIGNALS:
    void verticalValueChanged();
    void horizontalValueChanged();
    void verticalWheelMoved();
    void horizontalWheelMoved();
    void scrollSpeedChanged();
    void activeChanged();

private:
    qreal m_horizontalMinimumValue;
    qreal m_horizontalMaximumValue;
    qreal m_verticalMinimumValue;
    qreal m_verticalMaximumValue;
    qreal m_horizontalValue;
    qreal m_verticalValue;
    qreal m_verticalDelta;
    qreal m_horizontalDelta;
    qreal m_scrollSpeed;
    bool m_active;

    Q_DISABLE_COPY(QQuickWheelArea)
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QQuickWheelArea)

#endif // QQUICKWHEELAREA_P_H