/*

* Copyright (c) 2009 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 <QString>

#include <thumbnailmanager_qt.h>

#include "cxutils.h"

#include "cxethumbnailmanagersymbian.h"

/*!

* CxeThumbnailManagerSymbian::CxeThumbnailManagerSymbian

*/

CxeThumbnailManagerSymbian::CxeThumbnailManagerSymbian()

{

    CX_DEBUG_ENTER_FUNCTION();

    mThumbnailManager = new ThumbnailManager();

    // connect thumbnail ready signal from thumbnailmanager

    connect(mThumbnailManager, SIGNAL(thumbnailReady(QPixmap, void *, int, int)),

            this, SLOT(thumbnailReady(QPixmap, void *, int, int)));

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* CxeThumbnailManagerSymbian::~CxeThumbnailManagerSymbian

*/

CxeThumbnailManagerSymbian::~CxeThumbnailManagerSymbian()

{

    CX_DEBUG_ENTER_FUNCTION();

    mThumbnailRequests.clear();

    delete mThumbnailManager;

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Creates a thumbnail based on the snapshot data.

@param filename - name of the image/video filename

@param snapshot - snapshot data from image/video

*/

void CxeThumbnailManagerSymbian::createThumbnail(const QString& filename,

                                                 QPixmap /*snapshot*/)

{

    CX_DEBUG_ENTER_FUNCTION();

    TPtrC16 fName(reinterpret_cast<const TUint16*>(filename.utf16()));

    CX_DEBUG(("Create thumbnail! filename = %s", filename.toAscii().constData()));

    if (mThumbnailManager) {

        CX_DEBUG(("creating thumbnails"));

        //!@todo Thumbnail manager interface needs to be changed to use QImage

        // instead of QPixmap for setThumbnail. Until then, using qetThumbnail.

        int thumbnailId = mThumbnailManager->getThumbnail(filename, 0);

        if (thumbnailId != -1) {

            CX_DEBUG(("Thumbnail ID = %d", thumbnailId));

            mThumbnailRequests.insert(filename, thumbnailId);

        } else {

            CX_DEBUG(("error initializing data to thumbnail manager"));

        }

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* start canceling creating thumbnail operation

*/

void CxeThumbnailManagerSymbian::cancelThumbnail(const QString& filename)

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mThumbnailRequests.contains(filename)) {

        int thumbnailId = mThumbnailRequests.value(filename);

        if (mThumbnailManager &&

            mThumbnailManager->cancelRequest(thumbnailId)) {

            // thumbnail creation cancelled sucessfully

            mThumbnailRequests.remove(filename);

        }

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/**!

* Slot that notifies when final thumbnail bitmap generation or loading is complete.

* @param pixmap     An object representing the resulting thumbnail.

* @param clientData Client data

* @param id         Request ID for the operation

* @param errorCode  error code

*/

void CxeThumbnailManagerSymbian::thumbnailReady(QPixmap thumbnail, void * data, int id, int error)

{

    CX_DEBUG_ENTER_FUNCTION();

    Q_UNUSED(data);

    CX_DEBUG(("CxeThumbnailManagerSymbian::thumbnailReady error = %d", error));

    QString key;

    QHash<QString, int>::const_iterator i = mThumbnailRequests.constBegin();

    while (i != mThumbnailRequests.constEnd()) {

        if (i.value() == id) {

            key = i.key();

            break;

        }

        ++i;

    }

    if (mThumbnailRequests.contains(key)) {

        CX_DEBUG(("Thumbnail created for filename = %s", key.toAscii().constData()));

        mThumbnailRequests.remove(key);

        emit thumbnailReady(thumbnail, error);

    }

    CX_DEBUG_EXIT_FUNCTION();

}