/*

* 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 "cxecameradevicedesktop.h"

#include <QTimer>

#include <QDir>

#include "cxutils.h"

/*!

* Constructor

*/

CxeCameraDeviceDesktop::CxeCameraDeviceDesktop() :

        mSwitchPictureTimer(0),

        mPictureIndex(0)

{

    CX_DEBUG_ENTER_FUNCTION();

    loadPictures();

    setupTimer();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Destructor

*/

CxeCameraDeviceDesktop::~CxeCameraDeviceDesktop()

{

    CX_DEBUG_ENTER_FUNCTION();

    mSwitchPictureTimer->stop();

    delete mSwitchPictureTimer;

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Start the camera device

*/

void CxeCameraDeviceDesktop::start()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (!mSwitchPictureTimer->isActive()) {

        mSwitchPictureTimer->start();

    CX_DEBUG_EXIT_FUNCTION();

    }

}

/*!

* Stop the camera device

*/

void CxeCameraDeviceDesktop::stop()

{

    CX_DEBUG_ENTER_FUNCTION();

    mSwitchPictureTimer->stop();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Get current picture

* @ Return current picture

*/

const QPixmap &CxeCameraDeviceDesktop::currentSnaphot()

{

    return mPictureList.at(mPictureIndex);

}

/*!

* Handle timeout

*/

void CxeCameraDeviceDesktop::handleTimeout()

{

    CX_DEBUG_ENTER_FUNCTION();

    mPictureIndex++;

    if (mPictureIndex >= mPictureList.count()) {

        mPictureIndex = 0;

    }

    emit imageChanged(mPictureList.at(mPictureIndex));

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Load pictures

*/

void CxeCameraDeviceDesktop::loadPictures()

{

    CX_DEBUG_ENTER_FUNCTION();

    QDir currentDir(".","*.jpg");

    if (!currentDir.count()) {

        mPictureList.append(QPixmap(360, 640));

        return;

    }

    foreach (QString entry, currentDir.entryList()){

        mPictureList.append(QPixmap(entry).scaledToHeight(360));

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Create timer

*/

void CxeCameraDeviceDesktop::setupTimer()

{

    CX_DEBUG_ENTER_FUNCTION();

    mSwitchPictureTimer = new QTimer(this);

    mSwitchPictureTimer->setInterval(500);

    mSwitchPictureTimer->setSingleShot(false);

    connect(mSwitchPictureTimer, SIGNAL(timeout()), this, SLOT(handleTimeout()));

    CX_DEBUG_EXIT_FUNCTION();

}