--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/webkitutils/rt_gesturehelper/src/utils.cpp Fri Mar 19 09:52:28 2010 +0200
@@ -0,0 +1,71 @@
+/*
+* 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 the License "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 <coemain.h> // for CCoeEnv
+#include <eikappui.h> // for CEikAppUi
+
+#include "gesturedefs.h"
+
+namespace RT_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<CEikAppUi*>( 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;
+ */
+ long toleranceLength = Mm2Pixels(KFingerSize_mm) / 2;
+ TRect toleranceRect( aCenterPoint, TSize() );
+ // grow by the tolerance length, while keeping the center point
+ toleranceRect.Shrink( -toleranceLength, -toleranceLength );
+ return toleranceRect;
+ }
+
+ long Twips2Pixels(long twips)
+ {
+ CWsScreenDevice* screen = CCoeEnv::Static()->ScreenDevice();
+ TZoomFactor deviceMap(screen);
+ deviceMap.SetZoomFactor(TZoomFactor::EZoomOneToOne);
+ long px = deviceMap.VerticalTwipsToPixels(twips); //assuming that vertical
+ return px; //the same as horizontal
+
+ }
+
+ long Mm2Pixels(long mm)
+ {
+ return Twips2Pixels(mm * KTwipsInMm);
+ }
+
+ long Inches2Pixels(double inches)
+ {
+ return Twips2Pixels(inches * KTwipsInInch);
+ }
+
+
+ } // namespace GestureHelper