/*

* 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:   ?Description

*

*/

#ifndef GLXZOOMCONTROL_H

#define GLXZOOMCONTROL_H

#include <hbscrollarea.h>

class GlxMediaModel;

class QAbstractItemModel;

class HbIconItem;

class GlxImageDecoderWrapper;

class GlxZoomControl : public HbScrollArea

{

Q_OBJECT

public:

	GlxZoomControl(QGraphicsItem *parent = NULL);

	~GlxZoomControl();

	void setModel (QAbstractItemModel *model);

    void indexChanged (int index);

	void setWindowSize (QSize windowSize);

signals:

	void hideFullScreenUi();

public slots:

	void zoomImage(int zoomFactor);

	void decodedImageAvailable();

	void initialZoomFactor(int initZoomFactor);

private:

	void initializeZoomControl(int zoomFactor);

	void resetZoomControl();

	void updateItemPosition();

	void calculatePanOffset();

	void checkandAdjustImageBoundaries(QPointF &finalPos, QPointF undefferedPos);

private:

	QGraphicsPixmapItem *mZoomItem;

	QGraphicsWidget *mZoomWidget;

	GlxImageDecoderWrapper* mImageDecoder;

	HbIconItem *mBlackBackgroundItem;

	QSizeF mCurrentSize;

	QSizeF mItemSize;

	GlxMediaModel *mModel; //not owned

	int mInitialZoomFactor;

	int mCurrentZoomFactor;

	bool mIsControlActivated;

	bool mIsItemChanged;

	QSize mWindowSize;

	QPointF mPanOffset;

};

#endif //GLXZOOMCONTROL_h