/*

* Copyright (c) 2007-2008 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: cuicscrollbar.h

*

*/

#ifndef C_UICSCROLLBAR_H

#define C_UICSCROLLBAR_H

#include <alf/alfcontrol.h>

#include <alf/alfbitmapprovider.h>

#include "muicscrollbar.h"

// Forward declarations

class CAlfAnchorLayout;

class CAlfDeckLayout;

class CAlfImageVisual;

class CAlfLayout;

class CAlfTexture;

/**

 * Composite image

 */

NONSHARABLE_CLASS( CUiCCompositeImage ) : public CBase

    {

public:

    /**

     * Leave safe constructor

     */

    static CUiCCompositeImage* NewL( CAlfControl& aControl, CAlfLayout* aParentLayout,

            CAlfTexture& aTop, CAlfTexture& aMiddle, CAlfTexture& aBottom );

    /**

     * Destructor

     */

    ~CUiCCompositeImage();

    /**

     * Returns layout for this component

     */

    CAlfLayout& Layout();

private:

    CUiCCompositeImage();

    void ConstructL( CAlfControl& aControl, CAlfLayout* aParentLayout,

            CAlfTexture& aTop, CAlfTexture& aMiddle, CAlfTexture& aBottom );

    void SetAnchors();

private:

    CAlfAnchorLayout* iLayout;

    CAlfImageVisual* iTop;

    CAlfImageVisual* iMiddle;

    CAlfImageVisual* iBottom;

    };

/**

 * CUiCScrollBar

 *

 */

NONSHARABLE_CLASS( CUiCScrollBar ) : public CAlfControl, public MUiCScrollBar,

        public MAlfBitmapProvider

    {

public:

    /**

     * Leave safe constructor

     */

    static CUiCScrollBar* NewL( CAlfEnv& aEnv, CAlfLayout* aParentLayout );

public: // from MUiCScrollBar

    /**

     * @see MUiCScrollBar::Destroy

     */

    virtual void Destroy();

    /**

     * @see MUiCScrollBar::Show

     */

    virtual void Show( const TBool aShow );

    /**

     * @see MUiCScrollBar::UpdateModelL

     */

    virtual void UpdateModelL( const TUiCScrollBarModel& aModel );

    /**

     * @see MUiCScrollBar::ThumbPosition

     */

    virtual TInt ThumbPosition() const;

    /**

     * @see MUiCScrollBar::SetRect

     */

    virtual void SetRect( const TRect& aRect );

    /**

     * @see MUiCScrollBar::Redraw

     */

    virtual void Redraw();

    /**

     * @see MUiCScrollBar::NotifyThemeChanged

     */

    virtual void NotifyThemeChanged();

    /**

     * @see MUiCScrollBar::LayoutHints

     */

    virtual TInt LayoutHints() const;

private: // from MAlfEventHandler

    /**

     * @see MAlfEventHandler::OfferEventL

     */

    virtual TBool OfferEventL( const TAlfEvent& aEvent );

private: // from MAlfBitmapProvider

    /**

     * @see MAlfBitmapProvider::ProvideBitmapL

     */

    virtual void ProvideBitmapL( TInt aId, CFbsBitmap*& aBitmap, CFbsBitmap*& aMaskBitmap );

private:

    /**

     * Destructor

     */

    ~CUiCScrollBar();

    /**

     * Constructor

     */

    CUiCScrollBar();

    /**

     * 2nd constructor

     */

    void ConstructL( CAlfEnv& aEnv, CAlfLayout* aParentLayout );

    /**

     * Sets anchors for background image and thumb

     */

    void SetAnchors();

    /**

     * Sets anchors for background

     */

    void SetBgAnchors();

    /**

     * Sets anchors for thumb

     */

    void SetThumbAnchors();

    /**

     * Reads values from layout

     */

    void UpdateLayoutValues();

private:

    /**

     * Custom events

     */

    enum TEvent

        {

        EFadeOut

        };

    /**

     * Unique bitmaps IDs, make sure these do no overlap with the ones defined

     * in UI

     */

    enum TBitmapId

        {

        EThumbTop = 0x10000,

        EThumbMiddle,

        EThumbBottom,

        EBackgroundTop,

        EBackgroundMiddle,

        EBackgroundBottom

        };

private:

    // Container layout

    CAlfDeckLayout* iDeck;

    // Scrollbar background layout

    CAlfAnchorLayout* iBgLayout;

    // Scrollbar layout

    CAlfAnchorLayout* iThumbLayout;

    // Scrollbar background visual

    CUiCCompositeImage* iBackGroundVisual;

    // Scrollbar thumb visual

    CUiCCompositeImage* iThumbVisual;

    // Scrollbar model

    TUiCScrollBarModel iModel;

    };

#endif /* C_UICSCROLLBAR_H */