uigraphics/AknIcon/inc/AknIconLoader.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 03 May 2010 13:28:06 +0300
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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:  Icon loading from MIF files.
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*
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*
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*/
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#ifndef AKN_ICON_LOADER_H
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#define AKN_ICON_LOADER_H
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// INCLUDES
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#include <e32std.h>
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#include <f32file.h>
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#include <fbs.h>
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#include <mifheader.cdl.h>
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// CONSTANTS
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static const TInt32 KUidAvkonMultiIconFile( 0x034232342 );
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static const TInt32 KUidAvkonMultiIcon( 0x034232343 );
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static const TInt32 KMifFirstSupportedVersion( 1 );
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static const TInt32 KMifLastSupportedVersion( 3 );
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static const TInt32 KMifIconFirstSupportedVersion( 1 );
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static const TInt32 KMifIconLastSupportedVersion( 1 );
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struct TMifFileHeaderV1
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    {
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    TInt32 iUid;
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    TInt32 iVersion; // this determines how many fields of header are valid
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    TInt32 iArrayOffset;
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    TInt32 iArrayLength; // array length in items of TMifBitmapOffsetElement
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    };
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struct TMifFileHeaderV3
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    {
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    TInt32 iIndexDllUid;
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    };
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struct TMifFileHeader
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    {
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    TMifFileHeaderV1 iV1;
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    // since version 3
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    TMifFileHeaderV3 iV3;
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    // since version 4
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    // This is extensible by upgrading iVersion!
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    };
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struct TMifIconHeader
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    {
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    TInt32 iUid;
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    TInt32 iVersion;
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    // since version 1
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    TInt32 iDataOffset; // offset to icon data (from beginning of icon)
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    TInt32 iDataLength; // length of icon data in bytes
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    TInt32 iType; // type, e.g. svg
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    TInt32 iDepth; // depth of bitmap the content will be rendered to
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    TInt32 iAnimated; // whether icon is animated
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    TInt32 iMaskDepth; // depth of mask
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    // since version 2
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    // this is extensible by upgrading iVersion
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    };
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// FORWARD DECLARATIONS
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struct TMifBitmapOffsetElement;
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class CAknIconLocationInfo;
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// FUNCTION PROTOTYPES
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GLREF_C void CleanupFreeIcon( TAny* aObj );
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// CLASS DECLARATION
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/**
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* CAknIconLoader.
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*/
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NONSHARABLE_CLASS(CAknIconLoader) : public CBase
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    {
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    public: // Constructors and destructor
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        static CAknIconLoader* NewL( RFs& aFs, const TDesC& aFileName );
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        static CAknIconLoader* NewL( RFile& aFile ); // Opened file handle.
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        ~CAknIconLoader();
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    public: // New methods
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        void OpenFileL( RFs& aFs, const TDesC& aFileName );
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        void OpenFileL( RFile& aFile ); // Opened file handle.
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        void CloseFile();
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        TPtrC8 IconL( TInt aId );
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        TInt32 IconTypeL( TInt aId );
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        TInt32 IconDepthL( TInt aId );
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        TInt32 MaskDepthL( TInt aId );
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        TInt32 IconAnimatedL( TInt aId );
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        void FreeIcon();
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        /**
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        * Retrieves the icon location table from the MIF file assigned to this icon loader.
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        * The table is linked with the given icon file name, which of course should match
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        * the file used by this icon loader.
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        *
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        * @param aFileName MIF file name, full path.
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        */
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        CAknIconLocationInfo* LoadIconLocationInfoL( const TDesC& aFileName );
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#ifdef _NGATESTING        
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        TInt32 GetDerivedIconTypeL(TInt32 aType);
0
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        void SetIconTypeConfig(TInt32 aConfigIconType, const TDesC & aNGATestDirectory);
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#endif
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    private: // New methods
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        void LoadFileHeaderStructL();
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        void CheckFileL();
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        const TMifBitmapOffsetElement* BitmapOffsetsL();
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        const TMifBitmapOffsetElement* BitmapOffsetsArrayL();
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        TPtrC8 IconWithHeaderL( TInt aId );
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        void CheckIconL( TInt aId );
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        TMifIconHeader* IconHeaderL( TInt aId );
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        void LoadSharedOffsetsL();
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        void LoadOffsetsFromMifL();
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    private: // Private constructors
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        CAknIconLoader();
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        void ConstructL( RFs& aFs, const TDesC& aFileName );
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        void ConstructL( RFile& aFile );
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    private: // Data
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        RFile iFile;
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        TMifFileHeader iHeader;
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        HBufC8* iOffsets;
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        MifHeader::CInstance* iSharedOffsets;
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        TInt iIconId;
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        HBufC8* iIcon;
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        CCdlEngineRef* iCdlEngine;
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#ifdef _NGATESTING        
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        TInt32      iConfigIconType;
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        TFileName   iNGADirectory;
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#endif
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    };
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#endif      // AKN_ICON_LOADER_H
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// End of File