/*

* Copyright (c) 2002-2006 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:  Screen Clearer API, support for screen blanking.

*

*/

#ifndef AKNCLEARER_H

#define AKNCLEARER_H

#include <AknControl.h>

#include <eikenv.h>

class CAknScreenClearerBaseExtension;

/**

*  This class is base class for screen blanking.

*

*  @since Series 60 0.9

*/

class CAknScreenClearerBase : public CAknControl

	{

public:

	/**

	* Handles situation when status pane size changes.

	*/

	IMPORT_C void HandleStatusPaneSizeChangeL();

public: // from CCoeControl

    /**

    * From CCoeControl.

	*/

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);	

protected:

    /**

    * Destructor.

	*/

	IMPORT_C virtual ~CAknScreenClearerBase();

    /**

    * Symbian 2nd phase constructor.

    *

    * @param aParent Parent window group.

    * @param aOrdinalPos Ordinal position of the blank window.

    * @param aBlankAppStatusPane A flag to decide if application status pane area is to blanked or not.

	*/

	IMPORT_C void ConstructL(RWindowGroup& aParent, TInt aOrdinalPos, TBool aBlankAppStatusPane);

private: // from CCoeControl

    /**

    * From CCoeControl.

	*/

	IMPORT_C void Draw(const TRect& aRect) const;

private: // from CAknControl

    /**

    * From CAknControl.

    */

    IMPORT_C void* ExtensionInterface( TUid aInterface );

protected:

    /**

    * Sets shape for the cleared window.

    */

	void SetShapeL();

    /**

    * Sets skin background and shape for the cleared window.

    */

	void SetSkinShapeL();

private:

    CAknScreenClearerBaseExtension* iExtension;

	TBitFlags iFlags;

	};

// CLASS DECLARATION

/**

*  This class is for use inside applications for screen blanking.

*

*  @since Series 60 0.9

*/

class CAknLocalScreenClearer : public CAknScreenClearerBase

	{

public:

    /**

    * Two-phased constructor.

    */

	IMPORT_C static CAknLocalScreenClearer* NewLC();

    /**

    * Two-phased constructor.

    * @param aBlankAppStatusPane @c ETrue if application status pane is blank, 

    *                            @c EFalse if not.

    */

	IMPORT_C static CAknLocalScreenClearer* NewLC(TBool aBlankAppStatusPane);

    /**

    * Two-phased constructor.

    * @param aBlankAppStatusPane @c ETrue if application status pane is blank, 

    *                            @c EFalse if not.

    */

	IMPORT_C static CAknLocalScreenClearer* NewL(TBool aBlankAppStatusPane);

    /**

    * From CCoeControl

    */

	IMPORT_C void HandleResourceChange(TInt aType);

	};

#endif // AKNCLEARER_H