--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/textinput/peninputarc/src/peninputanim/penpointereventsuppressor.cpp Tue Feb 02 01:02:04 2010 +0200
@@ -0,0 +1,120 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0""
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#include <penpointereventsuppressor.h>
+
+const TInt KPenPointerEventSuppressorDefaultMaxTapDuration = 400000; // 0.4 seconds
+const TInt KPenPointerEventSuppressorDefaultMinInterDragInterval = 0;
+const TInt KPenPointerEventSuppressorDefaultMovement = 6;
+
+CPenPointerEventSuppressor* CPenPointerEventSuppressor::NewL()
+ {
+ return new (ELeave) CPenPointerEventSuppressor;
+ }
+
+CPenPointerEventSuppressor::~CPenPointerEventSuppressor()
+ {
+
+ }
+
+CPenPointerEventSuppressor::CPenPointerEventSuppressor()
+: iMaxTapDuration(KPenPointerEventSuppressorDefaultMaxTapDuration),
+ iMinInterDragInterval(KPenPointerEventSuppressorDefaultMinInterDragInterval),
+ iTap(EFalse)
+ {
+ // default move limit is 6 units, which seems to be a forgiving value for finger touch
+ iMaxTapMove.iWidth = KPenPointerEventSuppressorDefaultMovement;
+ iMaxTapMove.iHeight = KPenPointerEventSuppressorDefaultMovement;
+ }
+
+TBool CPenPointerEventSuppressor::SuppressPointerEvent(
+ const TPointerEvent& aPointerEvent)
+ {
+ switch ( aPointerEvent.iType )
+ {
+ case TPointerEvent::EButton1Down:
+ {
+ iDownTime.HomeTime();
+ iTap = ETrue;
+ iDownPos = aPointerEvent.iPosition;
+ iLastEventTime = iDownTime;
+ break;
+ }
+ case TPointerEvent::EDrag:
+ {
+ TTime now;
+ now.HomeTime();
+ if (iTap)
+ {
+ TPoint delta = aPointerEvent.iPosition - iDownPos;
+ if (Abs(delta.iX) > iMaxTapMove.iWidth ||
+ Abs(delta.iY) > iMaxTapMove.iHeight ||
+ now.MicroSecondsFrom(iDownTime) >= iMaxTapDuration)
+ {
+ // This touch action has gone outside the parameters of a tap
+ // the drag event should be handled
+ iTap = EFalse;
+ iLastEventTime = now;
+ return EFalse;
+ }
+ else
+ {
+ // still a tap, so suppress the drag event
+ return ETrue;
+ }
+ }
+ else if (now.MicroSecondsFrom(iLastEventTime) < iMinInterDragInterval)
+ {
+ // too soon since the last drag, suppress it
+ return ETrue;
+ }
+
+ // this drag event should be handled
+ iLastEventTime = now;
+ break;
+ }
+ case TPointerEvent::EButton1Up:
+ {
+ iTap = EFalse;
+ break;
+ }
+ case TPointerEvent::ENullType:
+ break;
+ default:
+ break;
+ }
+
+ // all non-drag events should be handled
+ return EFalse;
+ }
+
+void CPenPointerEventSuppressor::SetMaxTapDuration(
+ TTimeIntervalMicroSeconds aDuration)
+ {
+ iMaxTapDuration = aDuration;
+ }
+
+void CPenPointerEventSuppressor::SetMaxTapMove(TSize aMoveLimits)
+ {
+ iMaxTapMove = aMoveLimits;
+ }
+
+void CPenPointerEventSuppressor::SetMinInterDragInterval(
+ TTimeIntervalMicroSeconds aInterval)
+ {
+ iMinInterDragInterval = aInterval;
+ }