/*

* 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 GLXZOOMSLIDER_H

#define GLXZOOMSLIDER_H

#include <QObject>

#include <QSize>

class HbSlider;

class GlxMediaModel;

class QAbstractItemModel;

class QGraphicsItem;

class GlxZoomSlider : public QObject

{

Q_OBJECT

public:

	GlxZoomSlider (QGraphicsItem *parent = NULL);

	~GlxZoomSlider ();

	void setModel (QAbstractItemModel *model);

    void indexChanged (int index);

signals:

	void valueChanged(int newValue);

	void initialZoomFactor(int initZoomFactor);

public slots:

	void toggleSliderVisibility();

	void filterandEmitSliderValueChanges(int newValue);

	void sliderThumbPressed();

	void sliderThumbReleased();

private:

	void retrieveActualAndDisplayedSize(QSize& itemsize, QSize& displayedSize);

	int calculateZoomFactor(QSize& itemsize, QSize& displayedSize);

	void calculateAndInitializeFSZoomFactor();

	HbSlider* mZoomSlider;

	bool isSliderVisible; 

	bool mSliderThumbPressed;

	GlxMediaModel *mModel; //not owned

};

#endif //GLXZOOMSLIDER_H