1 /*

     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Responsible for capturing pointer events

    15 *

    16 */

    17 

    18 

    19 #ifndef _POINTERCAPTURER_H_

    20 #define _POINTERCAPTURER_H_

    21 

    22 // INCLUDES

    23 #include <e32std.h>

    24 #include <e32base.h>

    25 

    26 class CAlfControl;

    27 class CAlfControlGroup;

    28 class CAlfEnv;

    29 class CAlfDisplay;

    30 

    31 // CLASS DECLARATION

    32 

    33 namespace RT_GestureHelper 

    34 {

    35 

    36 class CGestureHelperImpl;

    37 class CPointerCaptureControl;

    38 

    39 /**

    40  * CPointerCaptureControl

    41  * Gesture control own a gesture helper, and captures any pointer events that 

    42  * no other control captures. After it captures pointer down event, it will 

    43  * capture all pointer events until pointer up. It does this by bringing its

    44  * control group to the top upon pointer down, and lowering the control group

    45  * to the botton upon pointer up.

    46  */

    47 NONSHARABLE_CLASS( CPointerCapturer ) : public CBase

    48     {

    49 public: 

    50     /** Two-phased constructor */

    51     static CPointerCapturer* NewL();

    52     /** Destructor */

    53     ~CPointerCapturer();

    54     

    55     void InitForAlfredL( CGestureHelperImpl& aHelper, CAlfEnv& aEnv, 

    56         CAlfDisplay& aDisplay, TInt aControlGroupId );

    57 

    58     void StartL();

    59     void Stop();

    60     

    61 private:    

    62     /// 

    63     CPointerCaptureControl* iCaptureControl;

    64     TInt iControlGroupId;

    65     };

    66 

    67 } // namespace GestureHelper

    68     

    69 #endif // _POINTERCAPTURER_H_