/* ============================================================
 *
 * This file is a part of digiKam project
 * http://www.digikam.org
 *
 * Date        : 2006-01-20
 * Description : image file IO threaded interface.
 *
 * Copyright (C) 2005-2011 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 * Copyright (C) 2005-2015 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * 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 General Public License for more details.
 *
 * ============================================================ */

#include "sharedloadsavethread.h"

// Local includes

#include "loadingcache.h"
#include "loadsavetask.h"

namespace Digikam
{

SharedLoadSaveThread::SharedLoadSaveThread(QObject* parent)
    : ManagedLoadSaveThread(parent)
{
}

void SharedLoadSaveThread::load(const LoadingDescription& description, AccessMode mode, LoadingPolicy policy)
{
    ManagedLoadSaveThread::load(description, LoadingModeShared, policy, mode);
}

DImg SharedLoadSaveThread::cacheLookup(const QString& filePath, AccessMode /*accessMode*/)
{
    LoadingCache* cache = LoadingCache::cache();
    LoadingCache::CacheLock lock(cache);
    DImg* cachedImg     = cache->retrieveImage(filePath);

    // Qt4: uncomment this code.
    // See comments in SharedLoadingTask::execute for explanation.

/*
    if (cachedImg)
    {
        if (accessMode == AccessModeReadWrite)
            return cachedImg->copy();
        else
            return *cachedImg;
    }
    else
    {
        return DImg();
    }
*/
    if (cachedImg)
    {
        return cachedImg->copy();
    }
    else
    {
        return DImg();
    }
}

}   // namespace Digikam
