/*

* Copyright (c) 2002-2004 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  Definition of the Browser On-screen scrollbar thumb

*

*/

#ifndef _SCROLLTHUMB_H

#define _SCROLLTHUMB_H

//-----------------------------------------------------------------------

// INCLUDES

//-----------------------------------------------------------------------

#include "ScrollBar.h"

#include <coecntrl.h>

#include <e32std.h>

//-----------------------------------------------------------------------

// CONSTANTS

//-----------------------------------------------------------------------

const TInt KShadowThickness = 1; // thickness of the shadow of the thumb

//-----------------------------------------------------------------------

// CLASS DEFINITION

//-----------------------------------------------------------------------

//

/**

*  Browser On-screen scrollbar thumb

*

*  @since Series60_version 2.5

*/

class CScrollThumb : public CCoeControl

    {

    //------------------------------------------------------------------

    // Constructors and Destructors - Public

    //------------------------------------------------------------------

    public:

        /**

        * Two-phased constructor.

        */

        static CScrollThumb* NewL(CScrollBar::TOrientation aOrientation);

        /**

        * Destructor.

        */

        virtual ~CScrollThumb();

        //------------------------------------------------------------------

        // Member Functions - Public

        //------------------------------------------------------------------

    public:

        void Draw(const TRect& aRect) const;

        /**

        * Sets the rect of the thumb and its shadow

        * @since Series60_version 2.5

        * @param aRect - rectangle of the thumb

        * @return none

        */

        void SetThumbAndShadow(const TRect& aRect);

        //------------------------------------------------------------------

        // Constructors and Destructors - Private

        //------------------------------------------------------------------

    private:

        /**

        * C++ default constructor.

        */

        CScrollThumb(CScrollBar::TOrientation aOrientation);

        /**

        * Symbian 2nd phase constructor

        */

        void ConstructL();

        //------------------------------------------------------------------

        // Inherited Member Functions - Private

        //------------------------------------------------------------------

    private:

        /**

        *	From CCoeControl, SizeChanged

        */

        virtual void SizeChanged();

        //------------------------------------------------------------------

        // Member Functions - Private

        //------------------------------------------------------------------

    private:

        /**

        * Sets the colours of a thumb

        * @since Series60_version 2.5

        * @param aThumbColour - the colour of the thumb

        * @param aThumbShadowColour - the colour of the thumb shadow

        * @return none

        */

        void SetThumbColours(TRgb aThumbColour, TRgb aThumbShadowColour);		

        //------------------------------------------------------------------

        // Member Data - Private

        //------------------------------------------------------------------

    private:

        CScrollBar::TOrientation iOrientation;	// Orientation of the thumb

        TRect iThumbShadow;         // The outline of the thumb

        TRect iThumbCentre;		    // the rect of the thumb shown inside the thumb shadow

        TRgb iThumbColour;		    // the colour of the thumb

        TRgb iThumbShadowColour;	// the colour of the thumb shadow

    };

#endif  // _SCROLLTHUMB_H