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:  Gesture helper constant definitions

    15 *

    16 */

    17 

    18 

    19 #ifndef _GESTUREDEFS_H_

    20 #define _GESTUREDEFS_H

    21 

    22 #include <e32std.h> ///  @todo check this is correct

    23 

    24 namespace RT_GestureHelper

    25 {

    26 

    27 /// time to hold the stylus in the same position to activate holding

    28 const TInt KHoldDuration = 500000; // microseconds 

    29 

    30 /// time to tap again for the second tap to be a double tap

    31 const TInt KMaxDoubleTapDuration = 400000; // microseconds 

    32 

    33 /// time in which speed becomes zero if user stops stylus movement before

    34 /// lifting the pointer

    35 const TInt KSpeedStopTime = 150000; // microseconds

    36 

    37 /// tolerance in degrees to either side of an angle, for direction to be the 

    38 /// same as reference angle

    39 const TReal KAngleTolerance = 25;

    40 

    41 /// Nth pointer event before the latest point

    42 const TInt KPreviousPointOffset = 3;

    43 

    44 /// Tolerance for ignoring small movements, percent of longer screen edge

    45 const TInt KGestureTolerancePercent = 2; // of 100

    46 

    47 const TInt KFingerSize_mm = 8;

    48 

    49 const TInt KTwipsInInch = 1440;

    50 

    51 const TReal KTwipsInMm = 56.7;

    52 

    53 const TInt  KMaxTapDuration = 300000; //microseconds

    54 

    55 const TInt  KFlickSpeed = 500;

    56 

    57 const TInt KDoubleTapMaxActivationInterval = 500000;     // 500 ms

    58 

    59 const TInt KDoubleTapMinActivationInterval = 40000;   // 40 ms

    60 

    61 const TInt KDoubleTapIdleInterval = 700000;           // 700 ms, to prevent triple-tap effects

    62 

    63 const TInt KLongTapDuration = 2000000; //2 sec

    64 

    65 const TInt KMinTimeBetweenDrags = 20000; // 20 ms

    66 /** 

    67  * Panic codes 

    68  */

    69 enum TGesturePanic

    70     {

    71     EGesturePanicIllegalLogic

    72     };  

    73 

    74 /** Panics the thread */

    75 inline void Panic( TGesturePanic aReason )

    76     {

    77      _LIT( KComponentName, "GestureHelper" );

    78     User::Panic( KComponentName, aReason );

    79     }

    80 

    81 } // namespace GestureHelper

    82 

    83 #endif // _GESTUREDEFS_H