/*
* Copyright (c) 2003 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: Interface for observing Canvas visibility changes.
*
*/
#ifndef MMIDCANVASEXTENDED_H
#define MMIDCANVASEXTENDED_H
#include <lcdui.h>
// CLASS DEFINITION
/*
-----------------------------------------------------------------------------
DESCRIPTION
Interface for observing canvas' visibility changes
-----------------------------------------------------------------------------
*/
class MMIDCanvasExtended : public MMIDCanvas
{
public:
/**
* Adds new observer. Observer will be informed when display gains or loses focus.
* @param aDirectScreenAccess Interface which will be informed of visibility changes.
*/
virtual void AddCanvasVisibilityObserver(MDirectScreenAccess* aDirectScreenAccess) = 0;
/**
* Removes observer.
* @param aDirectScreenAccess Observer which will be removed.
*/
virtual void RemoveCanvasVisibilityObserver(MDirectScreenAccess* aDirectScreenAccess) = 0;
};
#endif // MMIDCANVASEXTENDED_H