/*

* Copyright (c) 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:  Method to enable softkey transparency for display posting

*

*/

#ifndef EIKSOFTKEYPOSTINGTRANSPARENCY_H

#define EIKSOFTKEYPOSTINGTRANSPARENCY_H

// FORWARD DECLARATIONS

class CEikButtonGroupContainer;

// CLASS DECLARATION

/**

*  Enable or disable transparent soft-key rendering for applications using

*  S60 Posting API.

*

*  @lib eikcoctl.lib

*  @since S60 v5.0

*/

NONSHARABLE_CLASS( EikSoftkeyPostingTransparency )

    {

    public:

        /**

        *  Enable or disable transparent soft-key rendering for applications

        *  using S60 Posting API.

        *

        * Transparency is implemented by drawing transparency data into the

        * alpha channel of the screen buffer. It is designed to be used to

        * draw transparent CBA buttons on top of an image or video feed that

        * is rendered through S60 Posting API. The screen buffer must be in

        * EColor16MA display mode.

        *

        * There is no background for CBA buttons when transparency is enabled.

        *

        * @since S60 v5.0

        * @param aButtonGroupContainer Button container.

        * @param aEnable               ETrue to enable transparency,

        *                              EFalse to disable.

        * @return                      Error code.

        */

        IMPORT_C static TInt MakeTransparent(

            CEikButtonGroupContainer& aButtonGroupContainer,

            TBool aEnable );

    private:

        /**

        * C++ default constructor.

        */

        EikSoftkeyPostingTransparency();

    };

#endif // EIKSOFTKEYPOSTINGTRANSPARENCY_H