mulwidgets/gesturehelper/src/pointercapturer.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:56:02 +0200
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/*
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Responsible for capturing pointer events
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*
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*/
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#ifndef _POINTERCAPTURER_H_
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#define _POINTERCAPTURER_H_
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// INCLUDES
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#include <e32std.h>
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#include <e32base.h>
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class CAlfControl;
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class CAlfControlGroup;
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class CAlfEnv;
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class CAlfDisplay;
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// CLASS DECLARATION
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namespace GestureHelper 
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{
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class CGestureHelperImpl;
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class CPointerCaptureControl;
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/**
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 * CPointerCaptureControl
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 * Gesture control own a gesture helper, and captures any pointer events that 
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 * no other control captures. After it captures pointer down event, it will 
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 * capture all pointer events until pointer up. It does this by bringing its
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 * control group to the top upon pointer down, and lowering the control group
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 * to the botton upon pointer up.
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 */
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NONSHARABLE_CLASS( CPointerCapturer ) : public CBase
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    {
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public: 
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    /** Two-phased constructor */
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    static CPointerCapturer* NewL();
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    /** Destructor */
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    ~CPointerCapturer();
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    void InitForAlfredL( CGestureHelperImpl& aHelper, CAlfEnv& aEnv, 
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        CAlfDisplay& aDisplay, TInt aControlGroupId );
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    void StartL();
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    void Stop();
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private:    
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    /// 
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    CPointerCaptureControl* iCaptureControl;
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    TInt iControlGroupId;
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    };
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} // namespace GestureHelper
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#endif // _POINTERCAPTURER_H_