williamr@2: /*
williamr@2: * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: * All rights reserved.
williamr@2: * This component and the accompanying materials are made available
williamr@2: * under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
williamr@2: * which accompanies this distribution, and is available
williamr@2: * at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
williamr@2: *
williamr@2: * Initial Contributors:
williamr@2: * Nokia Corporation - initial contribution.
williamr@2: *
williamr@2: * Contributors:
williamr@2: *
williamr@2: * Description:   CFbsBitmap change observer
williamr@2: *
williamr@2: */
williamr@2: 
williamr@2: 
williamr@2: #ifndef AKN_ICON_OBSERVER_H
williamr@2: #define AKN_ICON_OBSERVER_H
williamr@2: 
williamr@2: // INCLUDES
williamr@2: 
williamr@2: // CONSTANTS
williamr@2: 
williamr@2: // FORWARD DECLARATIONS
williamr@2: class CFbsBitmap;
williamr@2: 
williamr@2: // FUNCTION PROTOTYPES
williamr@2: 
williamr@2: 
williamr@2: // CLASS DECLARATION
williamr@2: 
williamr@2: /**
williamr@2: * MAknIconObserver.
williamr@2: */
williamr@2: class MAknIconObserver
williamr@2:     {
williamr@2: public:
williamr@2: 
williamr@2:     /**
williamr@2:     * This is an abstract class for specifying an interface for 
williamr@2:     * receiving notifications when an icon's frame buffer has been updated.
williamr@2:     * An object of derived class implementing this interface should be registered
williamr@2:     * for a given icon to the AknIcon framework using 
williamr@2:     * function AknIconUtils::SetObserver().
williamr@2:     * 
williamr@2:     * AknIcon framework calls this function whenever the frame buffer of the observed icon
williamr@2:     * changes. This observer mechanism is mainly useful in animated icons cases.
williamr@2:     * The observer e.g. can redraw the icon on the screen when the frame of the animated 
williamr@2:     * icon has changed.
williamr@2:     *
williamr@2:     * @since 2.8
williamr@2:     * @param aBitmap bitmap or mask of the icon
williamr@2:     */
williamr@2:     virtual void BitmapChanged(CFbsBitmap *aBitmap)=0;
williamr@2:     };
williamr@2:     
williamr@2: /*
williamr@2: *
williamr@2: * This class is internal and not intended for use.
williamr@2: *
williamr@2: */
williamr@2: class MAknIconChangeObserver
williamr@2:     {
williamr@2: public:
williamr@2:     virtual void BitmapChanged()=0;
williamr@2:     };
williamr@2:     
williamr@2: #endif // AKN_ICON_OBSERVER_H
williamr@2: 
williamr@2: // End of File