/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Gesture helper implementation

*

*/

#include "pangesturerecogniser.h"

#include "GenericSimpleGesture.h"

#include "rt_uievent.h"

#include "filelogger.h"

using namespace stmGesture ;

CPanGestureRecogniser::CPanGestureRecogniser(MGestureListener* aListener) : 

        CGestureRecogniser(aListener)

{

}

CPanGestureRecogniser* CPanGestureRecogniser::NewL(MGestureListener* aListener)

{

    CPanGestureRecogniser* self = new (ELeave) CPanGestureRecogniser(aListener) ;

    return self;

}

CPanGestureRecogniser::~CPanGestureRecogniser()

{

}

TGestureRecognitionState CPanGestureRecogniser::recognise(int numOfActiveStreams,

        MGestureEngineIf* pge)

{

    TGestureRecognitionState state = ENotMyGesture;

    // Check if we are enabled or not

    if (!m_gestureEnabled) return state ;

    // Look at the events to see if it looks like a tap or double tap

    if (numOfActiveStreams == 1)

    {

        // Then look at the event stream, it has to be tap and release

        const stmUiEventEngine::MUiEvent* puie = pge->getUiEvents(0);

        if (!puie) return state;

        int countOfEvents = puie->countOfEvents() ;

        stmUiEventEngine::TUiEventCode eventCode = puie->Code() ;

        if (countOfEvents > 1) // do we have more than one event in the stream?

        {

            // Then look at the events to see if they are suitable for us

            // should we check that all of the events are targeted to our window?

            // currently we only check if the last one is for us and is EMove, then we pan if the speed is OK

            if (puie->Target() == m_powner &&

                eventCode == stmUiEventEngine::EMove) // The last one is move in our window

            {

                if (m_loggingenabled)

                {

                    LOGARG("CPanGestureRecogniser: Pan: num %d code %d", countOfEvents, eventCode);

                }

                float speedX = puie->speedX();

                float speedY = puie->speedY();

                using stmUiEventEngine::TUiEventSpeed;

                state = EGestureActive;

                TUiEventSpeed speedIf(speedX, speedY);

                // Panning gesture

                stmGesture::TDirectionalGesture pgest(

                                 KUid,

                                 puie->CurrentXY(),

                                 puie->PreviousXY(),

                                 &speedIf,

                                 m_loggingenabled);

               // Call the listener to inform that a Pan has occurred...

               m_listener->gestureEnter(pgest);

            }

        }

    }

    return state;

}

void CPanGestureRecogniser::release(MGestureEngineIf* /*ge*/)

{

    m_listener->gestureExit(KUid) ;

}

void CPanGestureRecogniser::setPanningSpeedLow(float aSpeed) __SOFTFP

{

    m_panningspeedlow = aSpeed ;

}

void CPanGestureRecogniser::setPanningSpeedHigh(float aSpeed) __SOFTFP

{

    m_panningspeedhigh = aSpeed ;

}