imstutils/imconversationview/imcvuiapp/inc/cimcvappsmileiconutility.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 10:12:18 +0200
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/*
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* Copyright (c) 2007-2008 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 "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:  Utility for selecting smile icon and converting
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*                between smile id and smile string.
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*  Description : Handles statuspane, context pane, navi pane
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*
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*/
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#ifndef CIMCVAPPSMILEICONUTILITY_H
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#define CIMCVAPPSMILEICONUTILITY_H
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// INCLUDES
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#include <e32base.h>
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#include "mimcvappresourcechangeobserver.h"
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#include <gdi.h>
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// FORWARD DECLARATIONS
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class CGulIcon;
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class CIMCVAppSmileString;
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class CIMCVAppSmileyInformation;
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class MIMCVUiAppSkinVariant;
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class CIMCVUiAppIconFileProvider;
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class CIMCVEngine;
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class MIMCVAppUi;
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// CLASS DECLARATION
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/**
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* CIMCVAppSmileIconUtility
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*
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* Utility for selecting smile icon and mapping
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* between smile icons and smile strings.
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*/
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class CIMCVAppSmileIconUtility : public CBase,
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                            public MIMCVAppResourceChangeObserver
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    {
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    public:  // Constructors and destructor
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        /**
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        * Two-phased constructor using default smile icon array.
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        *@param aAppUi : CIMCVAppUI reference
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        */
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        static CIMCVAppSmileIconUtility* NewL(
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        					 MIMCVUiAppSkinVariant& aSkinVariant,
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                             MIMCVAppUi& aAppUi,
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                             CIMCVEngine& aServiceEngine );   
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        /**
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        * Destructor.
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        */
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        ~CIMCVAppSmileIconUtility();
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	public:
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        /**
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        * Launch pop-up dialog for selecting smile icon.
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		* @param aSelectedSmileIndex Returns selected smile icon index
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		* @return (TInt) Return dialog value
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        */
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		TInt LaunchSmileIconDialogL( TInt& aSelectedSmileIndex );
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        /**
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        * Smile icon count.
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		* @return (TInt) Smile icon count
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        */
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		TInt SmileIconCount() const;
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        /**
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        * Return needed smile icon pointer from icon array.
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		* @param aSmileIndex Smile icon index
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        */
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		const CGulIcon* GetSmileIcon( TInt aSmileIndex ) const;
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        /**
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        * Return needed smile string reference from string array.
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		* @param aSmileIndex Smile icon index
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        */
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		const TDesC& GetSmileString( TInt aSmileIndex ) const;
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		/**
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        *   Search smileys from buffer. Replace every found smiley with KPuaCodeSmileyIconPadding 
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        *   @param aStr String to search smiles from.
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        *   @param aFixedStr, Target string where smileys are replaced with KPUaCodeSmileyIconPadding
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		*   @param aArray Array reference to icon array indexes in right order
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        */
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		void SearchSmilesL( const TDesC& aStr, TDes& aFixedStr,
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									 RArray<TInt>* aArray );
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        /**
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        *   Search smileys from buffer.
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        *   @param aStr String to search smiles from.
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        *   @param aSmileyInfoArray Information of found smileys.
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        *   @param aFixedStr, Target string where smileys are replaced with KPUaCodeSmileyIconPadding
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        *   @param aStartPos, Absolute position of index 0 in source string. Used when position of smiley is calculated.
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        */
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        void SearchSmilesL( const TDesC& aStr, 
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        					RPointerArray< CIMCVAppSmileyInformation >& aSmileyInfoArray, 
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        					TDes* aFixedStr = NULL, TInt aStartPos = 0 ) const;
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   113
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		/**
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		* Compares two TSmileyInformation objects' position field.
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		* @param aFirst Reference to the first TSmileyInformation
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		* @param aSecond Reference to the second TSmileyInformation
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		* @return (TInt) Positive if aFirst > aSecond, negative if opposite,
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		*			     0 if aFirst == aSecond
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		*/
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        static TInt Compare( const CIMCVAppSmileyInformation& aFirst,
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                             const CIMCVAppSmileyInformation& aSecond );
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		/**
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		* Compares two CIMCVAppSmileString objects' smiley length.
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		* @param aFirst Reference to the first CIMCVAppSmileString
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		* @param aSecond Reference to the second CIMCVAppSmileString
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		* @return (TInt) Positive if aFirst(length) < aSecond(length), 
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        *                negative if opposite, 0 if aFirst == aSecond
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		*/
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        static TInt CompareSmileyLengthReversed( 
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                             const CIMCVAppSmileString& aFirst,
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                             const CIMCVAppSmileString& aSecond );
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		/**
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		* Resizes all icons.
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		* @param aSize new icon size
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		*/
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		void ResizeIcons( const TSize& aSize );
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    	/**
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         * @return aResourceId to use
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        */
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		void ConstructSmileDialogIconArrayL( CIMCVEngine& aServiceEngine );
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		/**
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		 * parses whole smiley string from branding and extracts each smiley code
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		 */		
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		void ParseAllSmileyStringL(RPointerArray<HBufC> aAllSmileyString);
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    public: // From MIMCVAppResourceChangeObserver
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        /**
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         * Reload all icons on resource change
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         */
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        void ResourceChangedL();
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    private:  // Constructors and destructor
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        /**
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        * C++ constructor.
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        */
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        CIMCVAppSmileIconUtility( 
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                             MIMCVUiAppSkinVariant& aSkinVariant, 
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                             MIMCVAppUi& aAppUi );
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        /**
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        * Second-phased constructor
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        */
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        void ConstructL(CIMCVEngine& aServiceEngine );
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	private: // New methods		
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        /**
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         * Seek the first smiley which points to a given icon.
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         * This is slow method, and it should only be used to 
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         * precalculate the index table.
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         * @param aIconIndex index of icon in iIconArray
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         * @return index of smiley in iStringArray
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         */
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        TInt GetFirstSmileyIndex( TInt aIconIndex ) const;
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    private: // Data
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		// NOT Own
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		MIMCVUiAppSkinVariant& iSkinVariant;       
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		// Own. Smiley strings with ref to icon array 
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		RPointerArray<CIMCVAppSmileString> iStringArray;
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        // Own. Temporary array for searching the smileys.
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        // This should be empty when not searching.
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        RPointerArray<CIMCVAppSmileyInformation> iSmileArray;
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        // Own. Icon reference to string smileys.
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        // Using a precalculated array makes seeking a lot faster,
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        RArray<TInt> iIconToSmileyPointers;
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        // Cache length, so we don't need the seek this every time.
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        TInt iLongestSmileyLength;
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		// does not own        
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        MIMCVAppUi& iAppUi;       
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         //Own. Smiley icons for SmileDialog
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        RPointerArray<CGulIcon> iSmileDlgIconArray;
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        //Owns
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        RFile iFile;
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    };
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#endif  // CIMCVAPPSMILEICONUTILITY_H