/*

* 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 "GenericSimpleGesture.h"

#include "flickgesturerecogniser.h"

#include "rt_uievent.h"

#include "filelogger.h"

//#include "flogger.h"

using namespace stmGesture ;

CFlickGestureRecogniser::CFlickGestureRecogniser(MGestureListener* aListener) :

    CGestureRecogniser(aListener)

{

}

CFlickGestureRecogniser* CFlickGestureRecogniser::NewL(MGestureListener* aListener)

{

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

    return self;

}

CFlickGestureRecogniser::~CFlickGestureRecogniser()

{

}

/*!

 * Release gesture recogniser.  Note that this one never owns the gesture, it just calls

 * the callback if it detects ERelease inside the area being watched.

 * There could be also check for the target window?

 */

TGestureRecognitionState CFlickGestureRecogniser::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 flick with one pointer

    if (numOfActiveStreams == 1)

    {

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

        if (!puie) return state;

        int countOfEvents = puie->countOfEvents();

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

        if (m_loggingenabled)

        {

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

        }

        if (m_powner == puie->Target() && eventCode == stmUiEventEngine::ERelease)

        {

            if (m_loggingenabled)

            {

                LOGARG("CFlickGestureRecogniser: 0x%x ERelease: num %d code %d, %d", this, countOfEvents, puie->CurrentXY().iX, puie->CurrentXY().iY);

            }

            // Check if the speed before release was fast enough for flick

            const stmUiEventEngine::MUiEvent* puieprev = puie->previousEvent() ;

            if (puieprev && puieprev->Code() == stmUiEventEngine::EMove)

            {

                using stmUiEventEngine::TUiEventSpeed;

                float thespeedX = puieprev->speedX() ;

                float thespeedY = puieprev->speedY() ;

                if (m_loggingenabled)

                {

                    LOGARG("CFlickGestureRecogniser: prev speed: %f (limit: %f)", double(thespeedX), double(m_speed)) ;

                }

                if (Abs( thespeedX) >= m_speed || Abs( thespeedY) >= m_speed )

                {

                    state = EGestureActive ;

                    TUiEventSpeed speedIf(thespeedX, thespeedY);

                    // issue the flick gesture using the TDirectionalGesture (it has the speed and direction)

                    stmGesture::TDirectionalGesture pgest(

                            KUid,

                            puieprev->CurrentXY(),

                            puieprev->PreviousXY(),

                            &speedIf,

                            m_loggingenabled);

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

                    m_listener->gestureEnter(pgest);

                }

            }

        }

    }

    return state;

}

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

{

    if (m_loggingenabled)

    {

        LOGARG("CFlickGestureRecogniser: 0x%x flick", this);

    }

}

void CFlickGestureRecogniser::setFlickingSpeed(float aSpeed) __SOFTFP

{

    m_speed = aSpeed ;

}