uigraphics/AknIcon/srvinc/AknIconSrvUtils.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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/*
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* Copyright (c) 2002 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 "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:  
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*
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*
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*/
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#ifndef AKN_ICON_SRV_UTILS_H
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#define AKN_ICON_SRV_UTILS_H
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//  INCLUDES
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#include <e32base.h>
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#include <gdi.h>
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#include "AknIconUtils.h"
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// CONSTANTS
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// FUNCTION PROTOTYPES
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// FORWARD DECLARATIONS
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class MAknIconFormatHandler;
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class CAknIconLoader;
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struct TAknIconParams;
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// CLASS DECLARATION
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/**
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* A static utility class.
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*/
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class AknIconSrvUtils
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    { 
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    public:
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        /**
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        * Loads icon data and initializes icon format handler,
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        * stores Handler in the handler list
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        */
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        static TPtrC8 InitIconDataAndHandlerLC(
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            CAknIconLoader* aLoader,
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            RPointerArray<MAknIconFormatHandler>& aHandlerList,
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            MAknIconFormatHandler*& aHandler,
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            const TAknIconParams& aParams,
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            TBool aAnimated );
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        /**
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        * Loads icon data and initializes icon format handler.
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        */
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        static TPtrC8 InitIconDataAndHandlerLC(
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            CAknIconLoader* aLoader,
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            MAknIconFormatHandler*& aHandler,
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            TInt aIconId,
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            TBool aAnimated );
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        /**
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        * Renders a prepared MIF icon according to the given parameters.
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        * @ret Content dimensions of the icon.
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        */
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        static TAknContentDimensions RenderPreparedIconL(
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            MAknIconFormatHandler& aHandler,
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            CFbsBitmap* aBitmap,
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            CFbsBitmap* aMask, // may be NULL
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            TDisplayMode aBitmapDepth,
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            TDisplayMode aPreferredDepth,
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            const TSize& aSize,
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            TScaleMode aMode,
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            TInt aRotationAngle = 0,
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            TRgb aColor = TRgb(0,0,0),
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            TInt aBitmapId = 0,
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            TInt aMaskId = 0,
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            TBool aIsAppIcon = EFalse);
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        /**
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        * Modifies given size so that the given aspect ratio is preserved.
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        */
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        static void GetAspectRatioPreservedSize(
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            const TAknContentDimensions& aDimensions,
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            TSize& aSize );
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        /**
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        * Modifies given size so that the given aspect ratio is preserved.
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        * This is a version optimised for using integer numbers as
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        * content dimensions.        
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        */
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        static void GetAspectRatioPreservedSize(
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            const TSize& aDimensions,
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            TSize& aSize,
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            TBool aFitToOriginalSize );            
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        /**
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        * Scales bitmap icon.
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        */
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        static TBool ScaleBitmapIconL(
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            const TSize& aSize,
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            const TScaleMode aMode,
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            const TInt aAngle,
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            const TRgb aColor,
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            CFbsBitmap* aSourceBitmap,
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            CFbsBitmap* aSourceMask,
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            CFbsBitmap* aTargetBitmap,
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            CFbsBitmap* aTargetMask );
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				/**
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        * Checks the transparency on the bitmap and if required scale the bitmap/mask
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        * to give 12% at the bottom of the image/mask bitmap
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        */
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        static void EnsureValidSizeL(
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            CFbsBitmap* aBitmap,
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            CFbsBitmap* aMask );
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        /**
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        * Checks the transparency on the bitmap and returns the valid height possible
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        * on the bitmap. Valid height means 12% of transparent pixel at the bottom
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        */    
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        static TInt CheckMaskTransparencyL(const CFbsBitmap* aBmp);
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        /**
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        * Checks the transparency on the bitmap and returns the valid height possible
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        * on the bitmap. Valid height means 12% of transparent pixel at the bottom
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        */    
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        static TInt CheckAlphaTransparencyL(const CFbsBitmap* aBmp);
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    private: // Private constructor
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        AknIconSrvUtils();
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    };
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#endif // AKN_ICON_SRV_UTILS_H
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// Enf of File