1 /*

     2 * Copyright (c) 2006-2007 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 "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:   THuiInteractionInterval is a utility class that can be used 

    15 *                as specify intervals that adapt to user input.

    16 *

    17 */

    18 

    19 

    20 

    21 #include "uiacceltk/HuiInteractionInterval.h"  // Class definition

    22 #include "uiacceltk/HuiStatic.h"

    23 

    24 

    25 EXPORT_C THuiInteractionInterval::THuiInteractionInterval(TReal32 aScalar) __SOFTFP

    26         : iScalar(aScalar), iLastTimeMs(0)

    27     {

    28     }

    29 

    30 

    31 EXPORT_C void THuiInteractionInterval::SetScalar(TReal32 aScalar) __SOFTFP

    32     {

    33     iScalar = aScalar;

    34     }

    35     

    36     

    37 EXPORT_C TReal32 THuiInteractionInterval::Scalar() const __SOFTFP

    38     {

    39     return iScalar;

    40     }

    41     

    42 

    43 EXPORT_C TInt THuiInteractionInterval::Interval(TInt aIntervalTime)

    44     {

    45     TUint32 now = CHuiStatic::MilliSecondsSinceStart();

    46     TUint32 elapsed = now - iLastTimeMs;

    47     

    48     if(iScalar * elapsed < aIntervalTime)

    49         {

    50         // The last movement is probably still going on.

    51         aIntervalTime = TInt(elapsed * iScalar);

    52         }

    53         

    54     iLastTimeMs = now;

    55     

    56     return aIntervalTime;

    57     }