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:   

    15 *

    16 */

    17 

    18 #include "utils.h"

    19 

    20 #include <coemain.h> // for CCoeEnv

    21 #include <eikappui.h>  // for CEikAppUi

    22 

    23 #include "gesturedefs.h"

    24 

    25 namespace stmUiEventEngine

    26 {

    27     /** @return the longer edge of the size */

    28     inline TInt LongerEdge( const TSize& aSize )

    29         {

    30         return Max( aSize.iHeight, aSize.iWidth );

    31         }

    32 

    33     // for documentation, see header file

    34     TRect ToleranceRect( const TPoint& aCenterPoint )

    35         {

    36         long toleranceLength = Mm2Pixels(KFingerSize_mm) / 2;

    37         TRect toleranceRect( aCenterPoint, TSize() );

    38         // grow by the tolerance length, while keeping the center point

    39         toleranceRect.Grow( toleranceLength, toleranceLength );

    40         return toleranceRect;

    41         }

    42 

    43     long Twips2Pixels(long twips)

    44         {

    45         CWsScreenDevice* screen = CCoeEnv::Static()->ScreenDevice();

    46         TZoomFactor deviceMap(screen);

    47         deviceMap.SetZoomFactor(TZoomFactor::EZoomOneToOne);

    48         long px = deviceMap.VerticalTwipsToPixels(twips); //assuming that vertical

    49         return px;                                        //the same as horizontal

    50 

    51         }

    52 

    53     long Mm2Pixels(long mm)

    54         {

    55         return Twips2Pixels(mm * KTwipsInMm);

    56         }

    57 

    58     long Inches2Pixels(float inches)

    59         {

    60         return Twips2Pixels(inches * KTwipsInInch);

    61         }

    62 

    63 

    64 } // namespace