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

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbCore module of the UI Extensions for Mobile.

**

** 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.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

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

#include "hbgestures_p.h"

#include "hbpangesture.h"

#include "hbpangesture_p.h"

#include "hbvelocitycalculator_p.h"

#include <QPointF>

#include <QVariant>

#include <QDebug>

/*!

    @hbcore

    \class HbPanGesture

    \brief HbPanGesture is an extension to Qt standard QPanGesture

    \sa QPanGesture

*/

/*!

    \brief HbPanGesture constructor

    \param parent Owner for gesture

*/

HbPanGesture::HbPanGesture(QObject *parent) : QPanGesture(parent), d_ptr(new HbPanGesturePrivate)

{

    d_ptr->q_ptr = this;

}

/*!

    \brief HbPanGesture constructor

    \param dd Private data

    \param parent Owner for gesture

*/

HbPanGesture::HbPanGesture( HbPanGesturePrivate &dd, QObject *parent )

    : QPanGesture(parent), d_ptr( &dd )

{

    d_ptr->q_ptr = this;

}

/*!

    \brief HbPanGesture destructor

*/

HbPanGesture::~HbPanGesture()

{

    delete d_ptr;

}

/*!

    \property startPos

    \brief Starting position for gesture in global coordinates.

    \sa HbPanGesture::sceneStartPos

*/

QPointF HbPanGesture::startPos() const

{

    Q_D(const HbPanGesture);

    return d->mStartPos;

}

void HbPanGesture::setStartPos(const QPointF &startPos)

{

    Q_D(HbPanGesture);

    d->mStartPos = startPos;

}

/*!

    \property velocity

    \brief Panning velocity in global coordinates.

    \sa HbPanGesture::sceneVelocity

*/

QPointF HbPanGesture::velocity() const

{

    Q_D(const HbPanGesture);

    return HbVelocityCalculator( d->mAxisX, d->mAxisY ).velocity(QTime::currentTime());

}

void HbPanGesture::setVelocity(const QPointF &)

{

    Q_ASSERT(false);

}

/*!

    \property sceneLastOffset

    \brief The total offset from start position to second last position in scene coordinates.

    \sa QPanGesture::lastOffset()

*/

QPointF HbPanGesture::sceneLastOffset() const

{

    Q_D(const HbPanGesture);

    return d->mSceneLastOffset;

}

void HbPanGesture::setSceneLastOffset(const QPointF &lastOffset)

{

    Q_D(HbPanGesture);

    d->mSceneStartPos = lastOffset;

}

/*!

    \property sceneOffset

    \brief The total offset from start position to current position in scene coordinates.

    \sa QPanGesture::offset()

*/

QPointF HbPanGesture::sceneOffset() const

{

    Q_D(const HbPanGesture);

    return d->mSceneOffset;

}

void HbPanGesture::setSceneOffset(const QPointF &offset)

{

    Q_D(HbPanGesture);

    d->mSceneOffset = offset;

}

/*!

    \property sceneStartPos

    \brief Starting position for gesture in scene coordinates.

    \sa HbPanGesture::startPos()

*/

QPointF HbPanGesture::sceneStartPos() const

{

    Q_D(const HbPanGesture);

    return d->mSceneStartPos;

}

void HbPanGesture::setSceneStartPos(const QPointF &startPos)

{

    Q_D(HbPanGesture);

    d->mSceneStartPos = startPos;

}

/*!

    \property sceneVelocity

    \brief Panning velocity in scene coordinates.

    \sa HbPanGesture::velocity()

*/

QPointF HbPanGesture::sceneVelocity() const

{

    Q_D(const HbPanGesture);

    return HbVelocityCalculator(d->mSceneAxisX, d->mSceneAxisY).velocity( d->mLastTimeStamp );

}

/*!

    \property sceneAcceleration

    \brief Panning acceleration in scene coordinates.

    \sa QPanGesture::acceleration()

*/

QPointF HbPanGesture::sceneAcceleration() const

{

    return QPointF(0,0);

}

/*!

    \property sceneDelta

    \brief Distance between last two points in scene coordinates.

    \sa QPanGesture::delta()

*/

QPointF HbPanGesture::sceneDelta() const

{

    Q_D(const HbPanGesture);

    return d->mSceneOffset - d->mSceneLastOffset;

}