/*

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

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

* 

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not, 

* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

*

* Description:

*

*/

#include "qstmgenericsimplegesture.h"

#include "qstmflickgesturerecogniser.h"

#include "qstmuievent_if.h"

#include "qstmfilelogger.h"

using namespace qstmGesture ;

QStm_FlickGestureRecogniser::QStm_FlickGestureRecogniser(QStm_GestureListenerIf* listener) :

                              QStm_GestureRecogniser(listener)

{

}

QStm_FlickGestureRecogniser::~QStm_FlickGestureRecogniser()

{

}

/*!

 * 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?

 */

QStm_GestureRecognitionState QStm_FlickGestureRecogniser::recognise(int numOfActiveStreams,

                                                                    QStm_GestureEngineIf* pge)

{

    QStm_GestureRecognitionState state = m_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 qstmUiEventEngine::QStm_UiEventIf* puie = pge->getUiEvents(0);

        int countOfEvents = puie->countOfEvents();

        qstmUiEventEngine::QStm_UiEventCode eventCode = puie->code();

        if (m_loggingenabled) {

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

        }

        if (m_powner == puie->target() && eventCode == qstmUiEventEngine::ERelease)

        {

            if (m_loggingenabled) {

                		this, countOfEvents, puie->currentXY().x(), puie->currentXY().y());

            }

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

            const qstmUiEventEngine::QStm_UiEventIf* puieprev = puie->previousEvent() ;

            if (puieprev && puieprev->code() == qstmUiEventEngine::EMove) {

                using qstmUiEventEngine::QStm_UiEventSpeed;

                float thespeed = puieprev->speed() ;

                if (m_loggingenabled) {

                    LOGARG("QStm_FlickGestureRecogniser: prev speed: %f (limit: %f)", double(thespeed), double(m_speed)) ;

                }

                if (thespeed > m_speed) {

                    state = EGestureActive ;

                    QStm_UiEventSpeed speedIf(thespeed, puieprev->speedVec());

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

                    qstmGesture::QStm_DirectionalGesture pgest(

                            KUid,

                            &speedIf,

                            m_loggingenabled);

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

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

                    m_listener->gestureEnter(pgest);

                }

            }

        }

    }

    m_state = state;

    return state;

}

void QStm_FlickGestureRecogniser::release(QStm_GestureEngineIf* /*ge*/)

{

    if (m_loggingenabled) {

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

    }

    m_state = ENotMyGesture;

}

void QStm_FlickGestureRecogniser::setFlickingSpeed(float aSpeed) /* __SOFTFP */

{

    m_speed = aSpeed ;

}