diff -r 4ea6f81c838a -r 0e9bb658ef58 mulwidgets/gesturehelper/src/utils.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mulwidgets/gesturehelper/src/utils.cpp Wed Sep 01 12:23:18 2010 +0100 @@ -0,0 +1,72 @@ +/* +* Copyright (c) 2008 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: Gesture recognition utilities +* +*/ + +#include "utils.h" + +#include // for CCoeEnv +#include // for CEikAppUi + +#include "gesturedefs.h" + +namespace GestureHelper + { + /** @return the longer edge of the size */ + inline TInt LongerEdge( const TSize& aSize ) + { + return Max( aSize.iHeight, aSize.iWidth ); + } + + // for documentation, see header file + TRect ToleranceRect( const TPoint& aCenterPoint ) + { + TSize screenSize = static_cast( CCoeEnv::Static()->AppUi() ) + ->ApplicationRect().Size(); + // multiplication has to be done first, to avoid rounding integer to 0 with division + int toleranceLength = ( KGestureTolerancePercent * LongerEdge( screenSize ) ) / 100; + TRect toleranceRect( aCenterPoint, TSize() ); + // grow by the tolerance length, while keeping the center point + toleranceRect.Shrink( -toleranceLength, -toleranceLength ); + return toleranceRect; + } + + // for documentation, see header file + TRect ToleranceRect( const TPoint& aCenterPoint, MGestureEvent::TAxis aRelevantAxis ) + { + TRect toleranceRect = ToleranceRect(aCenterPoint); + + TSize screenSize = static_cast( CCoeEnv::Static()->AppUi() ) + ->ApplicationRect().Size(); + + if(aRelevantAxis == MGestureEvent::EAxisHorizontal) + { + toleranceRect.iTl.iY = 0; + toleranceRect.iBr.iY = screenSize.iHeight; + } + else if(aRelevantAxis == MGestureEvent::EAxisVertical) + { + toleranceRect.iTl.iX = 0; + toleranceRect.iBr.iX = screenSize.iWidth; + } + else // EAxisBoth + { + // nothing to be done + } + + return toleranceRect; + } + + } // namespace GestureHelper