ui/views/fullscreenview/inc/glxzoomslider.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 19 Mar 2010 09:28:59 +0200
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:   ?Description
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*
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*/
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#ifndef GLXZOOMSLIDER_H
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#define GLXZOOMSLIDER_H
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#include <QObject>
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#include <QSize>
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class HbSlider;
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class GlxMediaModel;
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class QAbstractItemModel;
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class QGraphicsItem;
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class GlxZoomSlider : public QObject
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{
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Q_OBJECT
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public:
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	GlxZoomSlider (QGraphicsItem *parent = NULL);
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	~GlxZoomSlider ();
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	void setModel (QAbstractItemModel *model);
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    void indexChanged (int index);
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signals:
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	void valueChanged(int newValue);
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	void initialZoomFactor(int initZoomFactor);
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public slots:
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	void toggleSliderVisibility();
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	void filterandEmitSliderValueChanges(int newValue);
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	void sliderThumbPressed();
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	void sliderThumbReleased();
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private:
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	void retrieveActualAndDisplayedSize(QSize& itemsize, QSize& displayedSize);
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	int calculateZoomFactor(QSize& itemsize, QSize& displayedSize);
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	void calculateAndInitializeFSZoomFactor();
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	HbSlider* mZoomSlider;
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	bool isSliderVisible; 
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	bool mSliderThumbPressed;
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	GlxMediaModel *mModel; //not owned
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};
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#endif //GLXZOOMSLIDER_H