author | chetan.kapoor@v800025.ad-sfpd.intra |
Tue, 27 Oct 2009 10:58:40 +0000 | |
branch | CompilerCompatibility |
changeset 25 | 9d87bae3dc1b |
parent 0 | dd21522fd290 |
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 recognition utilities |
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* |
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*/ |
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#include "utils.h" |
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#include <coemain.h> // for CCoeEnv |
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#include <eikappui.h> // for CEikAppUi |
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#include "gesturedefs.h" |
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namespace RT_GestureHelper |
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{ |
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/** @return the longer edge of the size */ |
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inline TInt LongerEdge( const TSize& aSize ) |
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{ |
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return Max( aSize.iHeight, aSize.iWidth ); |
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} |
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// for documentation, see header file |
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TRect ToleranceRect( const TPoint& aCenterPoint ) |
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{ |
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/* |
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TSize screenSize = static_cast<CEikAppUi*>( CCoeEnv::Static()->AppUi() ) |
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->ApplicationRect().Size(); |
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// multiplication has to be done first, to avoid rounding integer to 0 with division |
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int toleranceLength = ( KGestureTolerancePercent * LongerEdge( screenSize ) ) / 100; |
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*/ |
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long toleranceLength = Mm2Pixels(KFingerSize_mm) / 2; |
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TRect toleranceRect( aCenterPoint, TSize() ); |
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// grow by the tolerance length, while keeping the center point |
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toleranceRect.Shrink( -toleranceLength, -toleranceLength ); |
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return toleranceRect; |
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} |
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long Twips2Pixels(long twips) |
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{ |
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CWsScreenDevice* screen = CCoeEnv::Static()->ScreenDevice(); |
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TZoomFactor deviceMap(screen); |
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deviceMap.SetZoomFactor(TZoomFactor::EZoomOneToOne); |
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long px = deviceMap.VerticalTwipsToPixels(twips); //assuming that vertical |
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return px; //the same as horizontal |
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} |
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long Mm2Pixels(long mm) |
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{ |
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return Twips2Pixels(mm * KTwipsInMm); |
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} |
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long Inches2Pixels(double inches) |
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{ |
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return Twips2Pixels(inches * KTwipsInInch); |
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} |
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} // namespace GestureHelper |