author | chetan.kapoor@v800025.ad-sfpd.intra |
Tue, 27 Oct 2009 10:58:40 +0000 | |
branch | CompilerCompatibility |
changeset 25 | 9d87bae3dc1b |
parent 8 | 7c90e6132015 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Gesture helper implementation |
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* |
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*/ |
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#include "gesturehelperimpl.h" |
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#include <e32base.h> |
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#include <w32std.h> |
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#include "gesture.h" |
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#include "gesturedefs.h" |
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#include "utils.h" |
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#include "gestureeventfilter.h" |
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#include "gesturehelpereventsender.h" |
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#include "flogger.h" |
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using namespace RT_GestureHelper; |
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namespace RT_GestureHelper |
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{ |
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/// type of function in gesture helper to be called by the timer |
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/// when timer triggers |
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typedef void (CGestureHelperImpl::*CallbackFunctionL)(); |
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NONSHARABLE_CLASS( CCallbackTimer ) : public CTimer |
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{ |
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public: |
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/** Two-phase constructor */ |
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static CCallbackTimer* NewL( CGestureHelperImpl& aHelper, |
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CallbackFunctionL aCallbackFunctionL, TInt aDelay, TBool aIsEnabled ) |
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{ |
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CCallbackTimer* self = new ( ELeave ) CCallbackTimer( aHelper, |
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aCallbackFunctionL, aDelay, aIsEnabled ); |
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CleanupStack::PushL( self ); |
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self->ConstructL(); // construct base class |
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CActiveScheduler::Add( self ); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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/** Destructor */ |
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~CCallbackTimer() |
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{ |
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Cancel(); |
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} |
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/** Set whether sending holding events is currently enabled */ |
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void SetEnabled( TBool aEnabled ) |
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{ |
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iIsEnabled = aEnabled; |
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// cancel in case hold timer is already running |
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Cancel(); |
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} |
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/** @return whether sending holding events is currently enabled */ |
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TBool IsEnabled() const |
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{ |
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return iIsEnabled; |
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} |
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/** Start the timer. Calls CGestureHelperImpl::StartHoldingL upon completion */ |
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void Start() |
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{ |
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// if sending hold events is disabled, do not ever start the hold timer, and |
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// hence hold events will never be triggered |
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if ( iIsEnabled ) |
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{ |
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Cancel(); |
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After( iDelay ); |
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} |
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} |
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void SetDelay(TInt aDelay) { iDelay = aDelay; } |
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TInt GetDelay() { return iDelay; } |
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private: |
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/** Constructor */ |
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CCallbackTimer( CGestureHelperImpl& aHelper, |
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CallbackFunctionL aCallbackFunctionL, TInt aDelay, TBool aIsEnabled ) |
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: CTimer( EPriorityUserInput - 1 ), // give higher priority to new pointer events with - 1 |
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iHelper( aHelper ), iCallbackFunctionL( aCallbackFunctionL ), |
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iDelay( aDelay ), iIsEnabled( aIsEnabled ) |
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{ |
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} |
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void RunL() // From CActive |
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{ |
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(iHelper.*iCallbackFunctionL)(); |
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} |
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private: |
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/// helper object that will be called back when timer is triggered |
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CGestureHelperImpl& iHelper; |
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/// Function in the iHelper object call |
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CallbackFunctionL iCallbackFunctionL; |
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/// How long a time to wait befor calling back after Start() |
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TInt iDelay; |
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/// whether sending holding events is currently enabled |
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TBool iIsEnabled; |
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}; |
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} // namespace GestureHelper |
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/** |
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* @return position from event. Use this instead of using aEvent direction to |
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* avoid accidentally using TPointerEvent::iPosition |
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*/ |
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inline TPoint Position( const TPointerEvent& aEvent ) |
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{ |
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// use parent position, since the capturer is using full screen area, |
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// and because the (Alfred) drag events are not local to visual even when |
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// coming from the client |
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return aEvent.iPosition; |
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} |
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// ---------------------------------------------------------------------------- |
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// Two-phase constructor |
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// ---------------------------------------------------------------------------- |
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// |
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CGestureHelperImpl* CGestureHelperImpl::NewL( MGestureObserver& aObserver ) |
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{ |
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CGestureHelperImpl* self = new ( ELeave ) CGestureHelperImpl( aObserver ); |
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CleanupStack::PushL( self ); |
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self->iEventSender = CGestureEventSender::NewL( aObserver ); |
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self->iDoubleTapTimer = CCallbackTimer::NewL( *self, EmitFirstTapEvent, |
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KMaxTapDuration, EFalse ); // double tap is disabled by default |
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self->iHoldingTimer = CCallbackTimer::NewL( *self, StartHoldingL, |
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KHoldDuration, EFalse ); // holding is enabled by default |
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|
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self->iLongTouchTimer = CCallbackTimer::NewL( *self, HandleLongTouch, |
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KLongTapDuration, ETrue ); // holding is enabled by default |
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|
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self->iGesture = new ( ELeave ) CGesture(); |
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self->iUnusedGesture = new ( ELeave ) CGesture(); |
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TInt tapLimit = Mm2Pixels(KFingerSize_mm) / 2; |
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self->iEventFilter = new (ELeave) CGestureEventFilter(tapLimit); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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|
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// ---------------------------------------------------------------------------- |
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// Constructor |
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// ---------------------------------------------------------------------------- |
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// |
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CGestureHelperImpl::CGestureHelperImpl( MGestureObserver& aObserver ) |
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: iObserver( aObserver ) |
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{ |
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} |
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|
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// ---------------------------------------------------------------------------- |
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// Destructor |
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// ---------------------------------------------------------------------------- |
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// |
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CGestureHelperImpl::~CGestureHelperImpl() |
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{ |
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delete iDoubleTapTimer; |
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delete iHoldingTimer; |
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delete iGesture; |
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delete iPreviousTapGesture; |
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delete iUnusedGesture; |
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delete iLongTouchTimer; |
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delete iEventFilter; |
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delete iEventSender; |
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} |
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// ---------------------------------------------------------------------------- |
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// SetHoldingEnabled |
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// ---------------------------------------------------------------------------- |
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// |
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void CGestureHelperImpl::SetHoldingEnabled( TBool aEnabled ) |
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{ |
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iHoldingTimer->SetEnabled( aEnabled ); |
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} |
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// ---------------------------------------------------------------------------- |
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// IsHoldingEnabled |
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// ---------------------------------------------------------------------------- |
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// |
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TBool CGestureHelperImpl::IsHoldingEnabled() const |
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{ |
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return iHoldingTimer->IsEnabled(); |
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} |
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// ---------------------------------------------------------------------------- |
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// SetHoldingEnabled |
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// ---------------------------------------------------------------------------- |
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// |
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void CGestureHelperImpl::SetDoubleTapEnabled( TBool aEnabled ) |
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{ |
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iDoubleTapTimer->SetEnabled( aEnabled ); |
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} |
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// ---------------------------------------------------------------------------- |
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// IsHoldingEnabled |
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// ---------------------------------------------------------------------------- |
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// |
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TBool CGestureHelperImpl::IsDoubleTapEnabled() const |
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{ |
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return iDoubleTapTimer->IsEnabled(); |
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} |
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// ---------------------------------------------------------------------------- |
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// Reset state |
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// ---------------------------------------------------------------------------- |
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// |
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void CGestureHelperImpl::Reset() |
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{ |
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iHoldingTimer->Cancel(); |
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iLongTouchTimer->Cancel(); |
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iGesture->Reset(); |
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} |
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|
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/** |
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* Helper function that calls Reset on the pointer to CGestureHelperImpl |
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*/ |
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static void ResetHelper( TAny* aHelper ) |
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{ |
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static_cast< CGestureHelperImpl* >( aHelper )->Reset(); |
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} |
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|
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// ---------------------------------------------------------------------------- |
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// Handle a pointer event |
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// ---------------------------------------------------------------------------- |
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// |
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TBool CGestureHelperImpl::HandlePointerEventL( const TPointerEvent& aEvent ) |
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{ |
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TInt filterReason; |
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SetLastEventTime(); |
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if (!iEventFilter->FilterDrag(aEvent, iLastEventTime, filterReason)) |
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{ |
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return noneAlf_HandlePointerEventL( aEvent ); |
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} |
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251 |
else |
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252 |
{ |
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253 |
/* |
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254 |
TBuf<10> num; |
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255 |
num.Num( filterReason ); |
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TBuf<128> str; |
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str.AppendFormat(_L("Filter reason: %d"), filterReason); |
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|
258 |
RFileLogger::Write( _L("gh"), _L("gh.txt"), EFileLoggingModeAppend, str); |
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259 |
*/ |
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260 |
return EFalse; |
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|
261 |
} |
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|
262 |
} |
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|
263 |
|
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|
264 |
|
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|
265 |
TBool CGestureHelperImpl::noneAlf_HandlePointerEventL( const TPointerEvent& aEvent) |
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266 |
{ |
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switch ( aEvent.iType ) |
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268 |
{ |
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269 |
case TPointerEvent::EButton1Down: |
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270 |
{ |
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HandleTouchDownL(aEvent); |
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272 |
break; |
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273 |
} |
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case TPointerEvent::EDrag: |
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275 |
{ |
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HandleMoveL(aEvent); |
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277 |
break; |
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|
278 |
} |
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279 |
case TPointerEvent::EButton1Up: |
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280 |
{ |
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|
281 |
if (KErrNone == AddPoint( aEvent )) |
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|
282 |
{ |
8
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Revision: 200915
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0
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|
283 |
HandleTouchUp(aEvent); |
0
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|
284 |
} |
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Revision: 200911
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|
285 |
else |
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Revision: 200911
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diff
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|
286 |
{ |
8
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Revision: 200915
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0
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|
287 |
EmitCancelEvent(); |
0
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|
288 |
} |
8
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Revision: 200915
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0
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|
289 |
Reset(); |
0
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Revision: 200911
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diff
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|
290 |
break; |
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Revision: 200911
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parents:
diff
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|
291 |
} |
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Revision: 200911
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parents:
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|
292 |
default: |
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Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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diff
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|
293 |
break; |
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Revision: 200911
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parents:
diff
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|
294 |
} |
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Revision: 200911
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|
295 |
return ETrue; |
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Revision: 200911
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diff
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|
296 |
} |
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Revision: 200911
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|
297 |
|
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Revision: 200911
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|
298 |
TBool CGestureHelperImpl::IsMovementGesture(TGestureCode aCode) |
dd21522fd290
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|
299 |
{ |
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Revision: 200911
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|
300 |
return (aCode == EGestureDrag || aCode == EGestureFlick || aCode == EGestureSwipeUp || |
dd21522fd290
Revision: 200911
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|
301 |
aCode == EGestureSwipeDown || aCode == EGestureSwipeRight || aCode == EGestureSwipeLeft); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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|
302 |
} |
dd21522fd290
Revision: 200911
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parents:
diff
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|
303 |
|
8
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
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|
304 |
void CGestureHelperImpl::HandleLongTouch() |
0
dd21522fd290
Revision: 200911
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|
305 |
{ |
dd21522fd290
Revision: 200911
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|
306 |
iDoubleTapTimer->Cancel(); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
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|
307 |
iGesture->SetLongTap(ETrue); |
dd21522fd290
Revision: 200911
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parents:
diff
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|
308 |
iGesture->SetComplete(); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
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|
309 |
TPoint startPos = iGesture->StartPos(); |
8
7c90e6132015
Revision: 200915
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parents:
0
diff
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|
310 |
EmitEvent(*iGesture); |
0
dd21522fd290
Revision: 200911
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|
311 |
iGesture->Reset(); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
312 |
iGesture->AddPoint( startPos, GetLastEventTime() ); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
313 |
} |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
314 |
|
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
315 |
void CGestureHelperImpl::HandleTouchDownL(const TPointerEvent& aEvent) |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
316 |
{ |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
317 |
TGestureCode prevCode = iGesture->PreviousGestureCode(); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
318 |
if (prevCode == EGestureStart) return; |
8
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
changeset
|
319 |
if (prevCode == EGestureDrag) |
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
changeset
|
320 |
{ |
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
changeset
|
321 |
iGesture->Reset(); |
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
changeset
|
322 |
} |
0
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
323 |
AddPointL( aEvent ); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
324 |
|
8
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
changeset
|
325 |
if (!iLongTouchTimer->IsActive()) |
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
changeset
|
326 |
{ |
0
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
327 |
iLongTouchTimer->Start(); |
8
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
changeset
|
328 |
} |
0
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
329 |
if (!iDoubleTapTimer->IsActive()) |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
330 |
{ |
8
7c90e6132015
Revision: 200915
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
0
diff
changeset
|
331 |
EmitEvent( *iGesture ); |
0
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
332 |
} |
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333 |
} |
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|
334 |
|
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|
335 |
void CGestureHelperImpl::HandleMoveL(const TPointerEvent& aEvent) |
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{ |
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|
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if (iGesture->IsLatestPoint( Position(aEvent))) return; // I'm not sure we need this |
0
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338 |
//Cancel double tap time - it's neither tap nor double tap |
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|
339 |
iDoubleTapTimer->Cancel(); |
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|
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iLongTouchTimer->Cancel(); |
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|
341 |
|
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|
342 |
TBool isFirstPoint = IsIdle(); |
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|
343 |
|
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|
344 |
AddPointL( aEvent ); |
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345 |
|
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|
346 |
if (iPreviousTapGesture) |
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347 |
{ |
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|
348 |
RecycleGesture(iPreviousTapGesture); |
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349 |
} |
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|
350 |
|
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351 |
if (!isFirstPoint) |
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352 |
{ |
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353 |
EmitEvent( *iGesture ); |
0
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354 |
} |
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355 |
} |
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356 |
|
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|
357 |
void CGestureHelperImpl::HandleTouchUp(const TPointerEvent& /*aEvent*/) |
0
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358 |
{ |
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359 |
TGestureCode prevCode = iGesture->PreviousGestureCode(); |
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360 |
iLongTouchTimer->Cancel(); |
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|
361 |
iDoubleTapTimer->Cancel(); |
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|
362 |
TInt64 fromLastTouchUp = iLastEventTime.MicroSecondsFrom(iLastTouchUpTime).Int64(); |
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|
363 |
TInt64 fromLastDoubleTap = iLastEventTime.MicroSecondsFrom(iLastDoubleTapTime).Int64(); |
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|
364 |
/* |
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|
365 |
TBuf<1024> str; |
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|
366 |
str.AppendFormat(_L("fromLastTouchUp: %d, "), fromLastTouchUp); |
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|
367 |
str.AppendFormat(_L("fromLastDoubleTap: %d, "), fromLastTouchUp); |
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|
368 |
str.AppendFormat(_L("iPreviousTapGesture: %d, "), iPreviousTapGesture); |
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|
369 |
RFileLogger::Write( _L("gh"), _L("gh.txt"), EFileLoggingModeAppend, str); |
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|
370 |
*/ |
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|
371 |
if ( prevCode == EGestureLongTap ) |
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|
372 |
{ |
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373 |
EmitReleasedEvent(); |
0
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374 |
} |
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375 |
else if (IsMovementGesture(prevCode) || |
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376 |
!iDoubleTapTimer->IsEnabled() /* || !iGesture->IsTap()*/ ) |
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377 |
{ |
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378 |
iGesture->SetComplete(); |
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379 |
EmitEvent(*iGesture); |
0
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380 |
} |
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|
381 |
|
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|
382 |
else |
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|
383 |
{ |
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|
384 |
if ( iPreviousTapGesture && |
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|
385 |
(fromLastTouchUp > KDoubleTapMinActivationInterval) && |
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|
386 |
(fromLastTouchUp < KDoubleTapMaxActivationInterval) && |
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|
387 |
(fromLastDoubleTap > KDoubleTapIdleInterval)) |
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|
388 |
{ |
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|
389 |
// it's a double tap |
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|
390 |
iLastTouchUpTime = iLastEventTime; |
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|
391 |
iLastDoubleTapTime = iLastEventTime; |
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|
392 |
EmitDoubleTapEvent(); |
0
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|
393 |
} |
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|
394 |
else |
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|
395 |
{ |
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|
396 |
// it's a first tap |
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|
397 |
iLastTouchUpTime = iLastEventTime; |
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|
398 |
if (iPreviousTapGesture) |
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|
399 |
{ |
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|
400 |
RecycleGesture(iPreviousTapGesture); |
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|
401 |
} |
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|
402 |
|
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|
403 |
iPreviousTapGesture = iGesture; |
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|
404 |
iGesture = NewGesture(); |
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|
405 |
iDoubleTapTimer->Start(); |
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|
406 |
} |
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|
407 |
} |
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|
408 |
} |
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|
409 |
|
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|
410 |
|
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|
411 |
|
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|
412 |
void CGestureHelperImpl::EmitDoubleTapEvent() |
0
dd21522fd290
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|
413 |
{ |
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Revision: 200911
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|
414 |
iPreviousTapGesture->SetDoubleTap(); |
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Revision: 200915
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|
415 |
EmitFirstTapEvent(); |
0
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|
416 |
} |
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|
417 |
|
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|
418 |
|
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|
419 |
void CGestureHelperImpl::EmitReleasedEvent() |
0
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|
420 |
{ |
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Revision: 200911
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|
421 |
iGesture->SetComplete(); |
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|
422 |
iGesture->SetReleased(); |
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Revision: 200915
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|
423 |
EmitEvent(*iGesture); |
0
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Revision: 200911
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|
424 |
} |
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Revision: 200911
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|
425 |
|
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Revision: 200911
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|
426 |
|
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Revision: 200911
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|
427 |
// ---------------------------------------------------------------------------- |
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Revision: 200911
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|
428 |
// Is the helper idle? |
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Revision: 200911
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|
429 |
// inline ok in cpp file for a private member function |
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|
430 |
// ---------------------------------------------------------------------------- |
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|
431 |
// |
dd21522fd290
Revision: 200911
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diff
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|
432 |
inline TBool CGestureHelperImpl::IsIdle() const |
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|
433 |
{ |
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Revision: 200911
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|
434 |
return iGesture->IsEmpty(); |
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|
435 |
} |
dd21522fd290
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|
436 |
|
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|
437 |
// ---------------------------------------------------------------------------- |
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Revision: 200911
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|
438 |
// Add a point to the sequence of points that together make up the gesture |
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Revision: 200911
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|
439 |
// inline ok in cpp file for a private member function |
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Revision: 200911
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|
440 |
// ---------------------------------------------------------------------------- |
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Revision: 200911
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|
441 |
// |
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inline void CGestureHelperImpl::AddPointL( const TPointerEvent& aEvent ) |
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{ |
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User::LeaveIfError( AddPoint( aEvent ) ); |
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} |
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|
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// ---------------------------------------------------------------------------- |
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|
448 |
// Add a point to the sequence of points that together make up the gesture |
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449 |
// inline ok in cpp file for a private member function |
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// ---------------------------------------------------------------------------- |
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451 |
// |
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|
452 |
inline TInt CGestureHelperImpl::AddPoint( const TPointerEvent& aEvent ) |
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453 |
{ |
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454 |
TPoint pos = Position ( aEvent ); |
0
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return iGesture->AddPoint( pos, GetLastEventTime() ); |
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} |
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457 |
|
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458 |
// ---------------------------------------------------------------------------- |
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459 |
// StartHoldingTimer |
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// ---------------------------------------------------------------------------- |
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461 |
// |
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462 |
void CGestureHelperImpl::StartHoldingTimer( const TPointerEvent& aNewEvent ) |
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463 |
{ |
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if ( !( iGesture->IsHolding() || |
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iGesture->IsNearHoldingPoint( Position( aNewEvent ) ) ) ) |
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466 |
{ |
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467 |
// restart hold timer, since pointer has moved |
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iHoldingTimer->Start(); |
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// Remember the point in which holding was started |
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iGesture->SetHoldingPoint(); |
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471 |
} |
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472 |
} |
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473 |
|
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474 |
/** |
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475 |
* Helper function that calls ContinueHolding on the pointer to TGesture |
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476 |
*/ |
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Revision: 200911
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static void ContinueHolding( TAny* aGesture ) |
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478 |
{ |
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479 |
static_cast< CGesture* >( aGesture )->ContinueHolding(); |
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|
480 |
} |
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|
481 |
|
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482 |
// ---------------------------------------------------------------------------- |
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483 |
// Add a point to the sequence of points that together make up the gesture |
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484 |
// ---------------------------------------------------------------------------- |
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|
485 |
// |
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parents:
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|
486 |
void CGestureHelperImpl::StartHoldingL() |
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|
487 |
{ |
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parents:
diff
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|
488 |
// hold & tap event is specifically filtered out. Use case: in list fast |
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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diff
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489 |
// scrolling activation (e.g. enhanced coverflow), tap & hold should not |
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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490 |
// start fast scroll. In addition, after long tap on start position, |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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491 |
// drag and drag & hold swiping should emit normal swipe and swipe&hold |
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492 |
// events. Therefore, tap & hold is not supported. |
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|
493 |
__ASSERT_DEBUG( !iGesture->IsTap() && !iPreviousTapGesture, Panic( EGesturePanicIllegalLogic ) ); |
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|
494 |
|
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diff
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|
495 |
// holding has just started, and gesture code should be provided to client. |
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496 |
// set gesture state so that it produces a gesture code (other than drag) |
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|
497 |
iGesture->StartHolding(); |
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498 |
|
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// create an item in the cleanup stack that will set the gesture state |
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
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|
500 |
// to holding-was-started-earlier state. NotifyL may leave, but the |
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501 |
// holding-was-started-earlier state must still be successfully set, |
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parents:
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|
502 |
// otherwise, the holding gesture code will be sent twice |
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|
503 |
CleanupStack::PushL( TCleanupItem( &ContinueHolding, iGesture ) ); |
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|
504 |
|
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|
505 |
EmitEvent( *iGesture ); |
0
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|
506 |
|
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|
507 |
// set holding state to "post holding" |
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Revision: 200911
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|
508 |
CleanupStack::PopAndDestroy( iGesture ); |
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Revision: 200911
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|
509 |
} |
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parents:
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|
510 |
|
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|
511 |
// ---------------------------------------------------------------------------- |
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Revision: 200911
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|
512 |
// RecyclePreviousTapGesture |
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|
513 |
// ---------------------------------------------------------------------------- |
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Revision: 200911
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|
514 |
// |
dd21522fd290
Revision: 200911
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parents:
diff
changeset
|
515 |
void CGestureHelperImpl::RecyclePreviousTapGesture( TAny* aSelf ) |
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|
516 |
{ |
dd21522fd290
Revision: 200911
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parents:
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|
517 |
CGestureHelperImpl& self = *reinterpret_cast<CGestureHelperImpl*>( aSelf ); |
dd21522fd290
Revision: 200911
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parents:
diff
changeset
|
518 |
self.RecycleGesture( self.iPreviousTapGesture ); |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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|
519 |
} |
dd21522fd290
Revision: 200911
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parents:
diff
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|
520 |
|
dd21522fd290
Revision: 200911
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parents:
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|
521 |
// ---------------------------------------------------------------------------- |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
522 |
// Emit the remainder of the previous tap event (tap + released) |
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|
523 |
// ---------------------------------------------------------------------------- |
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Revision: 200911
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|
524 |
// |
8
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0
diff
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|
525 |
void CGestureHelperImpl::EmitFirstTapEvent() |
0
dd21522fd290
Revision: 200911
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diff
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|
526 |
{ |
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Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
527 |
// when this function is called, a tap has turned out to _not_ be a double tap |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
528 |
__ASSERT_DEBUG( IsDoubleTapEnabled(), Panic( EGesturePanicIllegalLogic ) ); |
dd21522fd290
Revision: 200911
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parents:
diff
changeset
|
529 |
__ASSERT_DEBUG( iPreviousTapGesture, Panic( EGesturePanicIllegalLogic ) ); |
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parents:
diff
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|
530 |
|
dd21522fd290
Revision: 200911
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|
531 |
iDoubleTapTimer->Cancel(); |
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parents:
0
diff
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|
532 |
CompleteAndEmit( *iPreviousTapGesture ); |
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Revision: 200915
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parents:
0
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|
533 |
RecycleGesture(iPreviousTapGesture); |
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0
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|
534 |
|
0
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|
535 |
} |
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Revision: 200911
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parents:
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|
536 |
|
dd21522fd290
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diff
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|
537 |
// ---------------------------------------------------------------------------- |
dd21522fd290
Revision: 200911
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parents:
diff
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|
538 |
// EmitStartEventL |
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Revision: 200911
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|
539 |
// ---------------------------------------------------------------------------- |
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Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
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|
540 |
// |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
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|
541 |
void CGestureHelperImpl::EmitStartEventL( const CGesture& aGesture ) |
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
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|
542 |
{ |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
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|
543 |
CGesture* startGesture = aGesture.AsStartEventLC(); |
8
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Revision: 200915
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|
544 |
EmitEvent( *startGesture ); |
0
dd21522fd290
Revision: 200911
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parents:
diff
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|
545 |
CleanupStack::PopAndDestroy( startGesture ); |
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Revision: 200911
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parents:
diff
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|
546 |
} |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
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changeset
|
547 |
|
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
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|
548 |
// ---------------------------------------------------------------------------- |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff
changeset
|
549 |
// EmitCompletionEventsL |
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// ---------------------------------------------------------------------------- |
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// |
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void CGestureHelperImpl::CompleteAndEmit( CGesture& aGesture ) |
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{ |
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Revision: 200911
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aGesture.SetComplete(); |
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// send gesture code if holding has not been started. If holding has |
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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// been started, client has already received a "hold swipe left" e.g. event, in which |
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Revision: 200911
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557 |
// case don't another "swipe left" event |
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if ( !aGesture.IsHolding() ) |
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{ |
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// if client leaves, the state is automatically reset. |
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// In this case the client will not get the released event |
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EmitEvent( aGesture ); |
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} |
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564 |
|
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// send an event that stylus was lifted |
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aGesture.SetReleased(); |
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EmitEvent( aGesture ); |
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} |
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|
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// ---------------------------------------------------------------------------- |
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// EmitCancelEventL |
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// ---------------------------------------------------------------------------- |
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573 |
// |
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void CGestureHelperImpl::EmitCancelEvent() |
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{ |
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iDoubleTapTimer->Cancel(); |
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|
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578 |
|
0
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CGesture& gestureToCancel = iPreviousTapGesture ? *iPreviousTapGesture : *iGesture; |
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gestureToCancel.SetCancelled(); |
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581 |
EmitEvent( gestureToCancel ); |
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RecycleGesture(iPreviousTapGesture); |
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|
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} |
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|
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586 |
// ---------------------------------------------------------------------------- |
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// Notify observer |
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// ---------------------------------------------------------------------------- |
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589 |
// |
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void CGestureHelperImpl::EmitEvent( const CGesture& aGesture ) |
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{ |
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// deallocation of the event is happening in CGestureEventSender::RunL() |
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TGestureEvent event; |
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event.SetCode(const_cast<CGesture&>(aGesture).Code(EAxisBoth)); |
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event.SetCurrentPos(aGesture.CurrentPos()); |
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event.SetDistance(aGesture.Distance()); |
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event.SetStartPos(aGesture.StartPos()); |
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event.SetIsHolding(aGesture.IsHolding()); |
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event.SetSpeed(aGesture.Speed()); |
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iEventSender->AddEvent(event); |
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} |
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|
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603 |
// ---------------------------------------------------------------------------- |
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// Return a fresh gesture from the gesture pool (pool of one gesture) |
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// ---------------------------------------------------------------------------- |
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// |
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Revision: 200911
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CGesture* CGestureHelperImpl::NewGesture() |
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{ |
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__ASSERT_DEBUG( iUnusedGesture, Panic( EGesturePanicIllegalLogic ) ); // pool should no be empty |
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|
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iUnusedGesture->Reset(); |
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Revision: 200911
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CGesture* freshGesture = iUnusedGesture; |
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iUnusedGesture = NULL; |
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return freshGesture; |
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615 |
} |
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|
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617 |
// ---------------------------------------------------------------------------- |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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618 |
// Return a fresh gesture from the gesture pool (pool of one gesture) |
dd21522fd290
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619 |
// ---------------------------------------------------------------------------- |
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620 |
// |
dd21522fd290
Revision: 200911
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621 |
void CGestureHelperImpl::RecycleGesture( CGesture*& aGesturePointer ) |
dd21522fd290
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622 |
{ |
dd21522fd290
Revision: 200911
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|
623 |
// only one object fits into the pool, and that should currently be enough |
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Revision: 200911
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// one pointer must be null, one non-null |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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|
625 |
__ASSERT_DEBUG( !iUnusedGesture != !aGesturePointer, Panic( EGesturePanicIllegalLogic ) ); |
dd21522fd290
Revision: 200911
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|
626 |
if ( aGesturePointer ) |
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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|
627 |
{ |
dd21522fd290
Revision: 200911
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|
628 |
iUnusedGesture = aGesturePointer; |
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Revision: 200911
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629 |
aGesturePointer = NULL; |
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Revision: 200911
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} |
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Revision: 200911
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631 |
} |