/*

* 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 "qstmupdowngesturerecogniser.h"

#include "qstmgenericsimplegesture.h"

#include "qstmuievent_if.h"

#include "qstmutils.h"

#include "qstmfilelogger.h"

using namespace qstmGesture ;

QStm_UpdownGestureRecogniser::QStm_UpdownGestureRecogniser(QStm_GestureListenerIf* listener) : 

{

}

QStm_UpdownGestureRecogniser::~QStm_UpdownGestureRecogniser()

{

}

QStm_GestureRecognitionState QStm_UpdownGestureRecogniser::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 a tap or double tap

    if (numOfActiveStreams == 1) {

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

        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 check if |x| > |y|

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

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

            	if (m_loggingenabled) {

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

                }

                // Is it leftright gesture in our window?

                const QPoint& p = puie->currentXY() ;

                QPoint dp = p - puie->previousXY() ;

                // check that the Y movement is bigger

                    state = EGestureActive;

                    // Give the gesture a name

                    pgest.setName(QString("Updown")) ;

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

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

                    m_listener->gestureEnter(pgest) ;

                }

            }

        }

    }

    m_state = state;

    return state;

}

void QStm_UpdownGestureRecogniser::release(QStm_GestureEngineIf* pge)

{

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

    using qstmUiEventEngine::QStm_UiEventSpeed;

    const QPoint& p = puie->currentXY() ;

    QPoint dp = p - puie->previousXY() ;

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

    m_listener->gestureExit(pgest) ;

    m_state = ENotMyGesture;

}