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 implementation

    15 *

    16 */

    17 

    18 #include "GenericSimpleGesture.h"

    19 #include "releasegesturerecogniser.h"

    20 #include "rt_uievent.h"

    21 #include "filelogger.h"

    22 

    23 using namespace stmGesture ;

    24 

    25 _LIT8(KReleaseName, "Release");

    26 

    27 CReleaseGestureRecogniser::CReleaseGestureRecogniser(MGestureListener* aListener) :

    28     CGestureRecogniser(aListener)

    29 {

    30 }

    31 

    32 CReleaseGestureRecogniser* CReleaseGestureRecogniser::NewL(MGestureListener* aListener)

    33 {

    34     CReleaseGestureRecogniser* self = new (ELeave) CReleaseGestureRecogniser(aListener) ;

    35     return self;

    36 }

    37 

    38 CReleaseGestureRecogniser::~CReleaseGestureRecogniser()

    39 {

    40 }

    41 

    42 /*!

    43  * Release gesture recogniser.  Note that this one never owns the gesture, it just calls

    44  * the callback if it detects ERelease inside the area being watched.

    45  * There could be also check for the target window?

    46  */

    47 TGestureRecognitionState CReleaseGestureRecogniser::recognise(int numOfActiveStreams,

    48         MGestureEngineIf* pge)

    49 {

    50     TGestureRecognitionState state = ENotMyGesture;

    51     // Check if we are enabled or not

    52     if (!m_gestureEnabled) return state ;

    53 

    54     // Look at the events to see if it looks like edge scroll with one pointer

    55     if (numOfActiveStreams == 1)

    56     {

    57         // Then look at the event stream, it has to be EHold

    58         const stmUiEventEngine::MUiEvent* puie = pge->getUiEvents(0);

    59         if (!puie) return state;

    60         

    61         int countOfEvents = puie->countOfEvents();

    62         stmUiEventEngine::TUiEventCode eventCode = puie->Code();

    63 

    64         if (m_loggingenabled)

    65         {

    66             LOGARG("CReleaseGestureRecogniser: %d num %d code %d", eventCode, countOfEvents, eventCode);

    67         }

    68         if (eventCode == stmUiEventEngine::ERelease)

    69         {

    70             if (m_loggingenabled)

    71             {

    72                 LOGARG("CReleaseGestureRecogniser: 0x%x ERelease: num %d code %d, %d", 

    73                         this, countOfEvents, puie->CurrentXY().iX, puie->CurrentXY().iY);

    74                 LOGARG("CReleaseGestureRecogniser: area, %d,%d %d,%d", 

    75                         m_area.iTl.iX, m_area.iTl.iY, m_area.iBr.iX, m_area.iBr.iY);

    76             }

    77             bool produceGesture ;

    78             if(!m_area.IsEmpty())

    79             {

    80                 produceGesture = m_area.Contains(puie->CurrentXY()) ;

    81                 if(produceGesture && m_loggingenabled)

    82                 {

    83                     LOGARG("CReleaseGestureRecogniser: HIT area (%d,%d) in %d,%d %d,%d", 

    84                             puie->CurrentXY().iX, puie->CurrentXY().iY, 

    85                             m_area.iTl.iX, m_area.iTl.iY, 

    86                             m_area.iBr.iX, m_area.iBr.iY);

    87                 }

    88             }

    89             else

    90             {

    91                 produceGesture = (m_powner == puie->Target()) ;  // no area defined, touch detected in the window

    92             }

    93             if (produceGesture)

    94             {

    95                 state = EGestureActive ;

    96                 // issue the release gesture using the GenericSimpleGesture

    97                 stmGesture::TGenericSimpleGesture pgest(KUid, puie->CurrentXY());

    98                 // Give the gesture a name

    99                 pgest.setName(KReleaseName) ;

   100                 // Call the listener to inform that a release has occurred...

   101                 m_listener->gestureEnter(pgest);

   102             }

   103         }

   104     }

   105     return state;

   106 }

   107 

   108 void CReleaseGestureRecogniser::release(MGestureEngineIf* /*ge*/)

   109 {

   110     if (m_loggingenabled)

   111     {

   112         LOGARG("CReleaseGestureRecogniser: 0x%x release", this);

   113     }

   114 }

   115 

   116 void CReleaseGestureRecogniser::setArea(const TRect& theArea)

   117 {

   118     m_area = theArea ;

   119     if (m_loggingenabled)

   120     {

   121         LOGARG("CReleaseGestureRecogniser: area, %d,%d %d,%d", 

   122                 m_area.iTl.iX, m_area.iTl.iY, 

   123                 m_area.iBr.iX, m_area.iBr.iY);

   124     }

   125 }

   126