/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbServers module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

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

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#ifndef HBICONDATACACHE_P_H

#define HBICONDATACACHE_P_H

#include <QHash>

#include "hbthemeserverutils_p.h"

#include "hbiconcacheitemcreator_p.h"

class HbIconDataCache

{

public:

    HbIconDataCache();

    ~HbIconDataCache();

    void clear();

    HbIconCacheItem* getCacheItem(const HbIconKey &key ,

                                  HbRenderingMode currentRenderingMode,

                                  bool isMultiIconPiece = false);

    bool insert(const HbIconKey &key, HbIconCacheItem *item);

    bool remove(const HbIconKey&  key, bool keepInCache = true);

    void setMaxGpuCacheSize(int size);

    void setMaxCpuCacheSize(int size);

    bool contains(const HbIconKey &key) const;

    HbIconCacheItem* value(const HbIconKey &key) const;

    void memoryGood();

    void freeGpuRam(int bytes, bool useSwRendering);

    void freeUnusedGpuResources();

    QVector<const HbIconKey *> getKeys(const QString &filename) const;

    int gpuLRUSize() const;

//Debug Code for Test Purpose

#ifdef HB_ICON_CACHE_DEBUG

    void cleanVectorLRUList();

    void cleanRasterLRUList();

    int count() const;

    int freeVectorMemory();

    int freeRasterMemory();

    int lastAddedRefCount();

    int lastAddedItemMem();

    int lastRemovedItemMem();

    int lastRemovedItemRfCount();

    bool enableCache(bool cacheIt);

    int cacheHitCount();

    int cacheMissCount();

    int rasterLruCount();

    int vectorLruCount();

#endif

private:

    void createGpuCacheSpace(int itemCost);

    void createCpuCacheSpace(int itemCost);

    void updateGpuLruSize(int iconDataCost);

    void updateCpuLruSize(int iconDataCost);

    void removeFromCache(const HbIconKey &key, const HbIconCacheItem *releaseItem);

    void releaseVectorItem(HbIconCacheItem *releaseItem);

    void releaseRasterItem(HbIconCacheItem *releaseItem);

private:

    QHash<HbIconKey, HbIconCacheItem*> *cache;

    HbDLinkList<HbIconCacheItem> gpuLruList;

    HbDLinkList<HbIconCacheItem> cpuLruList;

    int currentGpuCacheSize;

    int currentCpuCacheSize;

    int gpuLruListSize;

    int cpuLruListSize;

    int maxGpuCacheLimit;

    int maxCpuCacheLimit;

    bool goodMemory;

    //Debug Code for Test Purpose

#ifdef HB_ICON_CACHE_DEBUG

    int addedItemRefCount;

    int addedItemMem;

    int removedItemMem;

    int remRfCount;

    bool enableCaching;

    int cacheHit;

    int cacheMiss;

    int vectorLruListCount;

    int rasterLruListCount;

#endif

};

#endif // HBICONCACHE_P_H