/*

* 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:     

*

*/

#ifndef HGSCROLLBAR_H_

#define HGSCROLLBAR_H_

#include <e32base.h>

#include <ganes/HgScroller.h>

struct TPointerEvent;

class TAknsItemID;

class CWindowGc;

class CFbsBitmap;

class CGulIcon;

class CFont;

class MHgScrollbarObserver;

NONSHARABLE_CLASS( CHgScrollbar ) : public CBase

    {

public:

    static CHgScrollbar* NewL( MHgScrollbarObserver& aObserver );

    virtual ~CHgScrollbar();

public:

    void InitScrollBarL(

            TRect aScrollbarRect,

            TSize aTotalSize,

            TSize aViewSize,

            TBool aLandscapeScrolling );

    void SetViewPosition( TPoint aPosition );

    TBool HandlePointerEventL( const TPointerEvent& aEvent );

    void Draw( CWindowGc& aGc );

    const CGulIcon* ScrollbarBg() const;

    const CGulIcon* ScrollbarHandleBg() const;

    const CGulIcon* ScrollbarHandle() const;

    const CGulIcon* ScrollbarBgSelected() const;

    const CGulIcon* ScrollbarHandleSelected() const;

    const TRect& ScrollbarRect() const;

    const TPoint& HandlePosition() const;

    TBool IsStatic() const;

    TBool IsDragging() const;

    TBool Handler() const;

    void Reset();

protected:

    CHgScrollbar( MHgScrollbarObserver& aObserver );

    void ConstructL();

private:

    void DrawScrollbar( CWindowGc& aGc );

    TBool HandleScrollBarPointerEvent( const TPointerEvent& aEvent );    

    void CheckHandlePosition( TBool aReportChange );

    void InitIconsL( TBool aInitBgIcons );

    void CreateIconL( CGulIcon*& aIcon, TSize aSize);

    void DrawIconL( CGulIcon& aIcon,

            const TAknsItemID& aTop,

            const TAknsItemID& aMiddle,

            const TAknsItemID& aBottom );

    void DrawBitmapL( CGulIcon& aIcon,

            const TAknsItemID& aItem,

            const TRect& aDestRect );

    void ScaleBitmapL( const TRect& aDestRect,

            CFbsBitmap* aDest,

            const CFbsBitmap* aSrc);

private:

    MHgScrollbarObserver& iObserver;

    CGulIcon* iScrollbarBg;

    CGulIcon* iScrollbarHandleBg;

    CGulIcon* iScrollbarHandle;

    CGulIcon* iScrollbarBgSelected;

    CGulIcon* iScrollbarHandleSelected;

    TRect iScrollbarRect;

    TRect iNaviRect;

    TPoint iHandlePosition;

    TPoint iPrevDrag;

    TSize iTotalSize;

    TSize iViewSize;

    TSize iHandleSize;

    TBool iLandscapeScrolling;

    TBool iDragging;

    TBool iHandler;

    TBool iStatic;

    TInt iScrollLength;

    TInt iTotalLength;

    };

#endif /*HGSCROLLBAR_H_*/