/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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: 

*

*/

#include "qstmpangesturerecogniser.h"

#include "qstmgenericsimplegesture.h"

#include "qstmuievent_if.h"

#include "qstmfilelogger.h"

using namespace qstmGesture ;

QStm_PanGestureRecogniser::QStm_PanGestureRecogniser(QStm_GestureListenerIf* listener) : 

		                         QStm_GestureRecogniser(listener)

{

}

QStm_PanGestureRecogniser::~QStm_PanGestureRecogniser()

{

}

QStm_GestureRecognitionState QStm_PanGestureRecogniser::recognise(int numOfActiveStreams,

                                    QStm_GestureEngineIf* pge)

{

    QStm_GestureRecognitionState state = ENotMyGesture;

    // Check if we are enabled or not

    if (!m_gestureEnabled) return state ;

    if (numOfActiveStreams == 1) {   

        const qstmUiEventEngine::QStm_UiEventIf* puie = pge->getUiEvents(0);

        int countOfEvents = puie->countOfEvents() ;

        qstmUiEventEngine::QStm_UiEventCode 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 (m_loggingenabled) {

            	LOGARG("QStm_PanGestureRecogniser: Got: numer of events %d, event code %d", countOfEvents, eventCode);

            }

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

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

                float speed = puie->speed();

                if (m_loggingenabled) {

                    LOGARG("QStm_PanGestureRecogniser: Pan: num %d code %d, speed %f, pos(%d, %d), prev pos(%d, %d)", 

                            countOfEvents, eventCode, speed, puie->currentXY().x(), puie->currentXY().y(), 

                            puie->previousXY().x(), puie->previousXY().y());

                }

                // It is pan gesture in our window, handle it, if the speed is inside limits

                if (speed > m_panningspeedlow && speed < m_panningspeedhigh) {

                    using qstmUiEventEngine::QStm_UiEventSpeed;

                    state = EGestureActive;

                    QStm_UiEventSpeed speedIf(speed, puie->speedVec());

                    // Panning gesture

                    qstmGesture::QStm_DirectionalGesture pgest(

                                    KUid,

                                    puie->currentXY(),

                                    puie->previousXY(),

                                    &speedIf,

                                    m_loggingenabled);

                    pgest.setTarget(puie->target());

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

                    m_listener->gestureEnter(pgest);

                }

            }

            else if (eventCode == qstmUiEventEngine::ERelease) {

            	LOGARG("QStm_PanGestureRecogniser::recognise: (0x%x) eventCode == ERelease", this);

            }

        }

    }

    m_state = state;

    return state;

}

void QStm_PanGestureRecogniser::release(QStm_GestureEngineIf* pge)

{

	if (m_loggingenabled) {

	    LOGARG("QStm_PanGestureRecogniser: release (0x%x)", this);	

	}

	const qstmUiEventEngine::QStm_UiEventIf* puie = pge->getUiEvents(0);

    using qstmUiEventEngine::QStm_UiEventSpeed;

    QStm_UiEventSpeed speedIf(puie->speed(), puie->speedVec());

    qstmGesture::QStm_DirectionalGesture pgest(

                    KUid,

                    puie->currentXY(),

                    puie->previousXY(),

                    &speedIf,

                    m_loggingenabled);

	pgest.setTarget(puie->target());

    m_listener->gestureExit(pgest) ;

    m_state = ENotMyGesture;

}

void QStm_PanGestureRecogniser::setPanningSpeedLow(float aSpeed)/* __SOFTFP */

{

    m_panningspeedlow = aSpeed ;

}

void QStm_PanGestureRecogniser::setPanningSpeedHigh(float aSpeed) /*__SOFTFP */

{

    m_panningspeedhigh = aSpeed ;

}