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/*
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* Copyright (c) 1997-2009 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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* PRIVATE HEADER FILE CONTAINING IMPLEMENTATION SPECIFIC CLASSES
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*
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*/
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#ifndef __TXTFMSTM_H__
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#define __TXTFMSTM_H__
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#include <e32std.h>
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#include <txtfrmat.h>
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// forward declarations
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class RReadStream;
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class RWriteStream;
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class TCharFormatX;
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class TCharFormatXMask;
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/**
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stores format attributes as bytecode, this class is intended for internal use only.
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@publishedAll
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*/
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class RFormatStream
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{
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public:
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RFormatStream();
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void CopyL(const RFormatStream& aSource);
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void ExternalizeL(RWriteStream& aStream) const;
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void InternalizeL(RReadStream& aStream);
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void Reset();
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const TUint8* Ptr(TInt& aSize) const;
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void SetParaFormatL(const CParaFormat& aDesiredFormat,const TParaFormatMask& aDesiredMask,const CParaFormat& aCurrentFormat);
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void SenseParaFormatL(CParaFormat& aParaFormat,TParaFormatMask& aMask,CParaFormat::TParaFormatGetMode aMode)const;
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void SetCharFormatL(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);
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void SenseCharFormat(TCharFormatX& aCharFormat,TCharFormatXMask& aMask)const;
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void Swap(RFormatStream& aStream);
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private:
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void AllocL(TInt aSize);
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TInt Length(TUint8*& aPtr,TTextFormatAttribute aType)const;
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TInt DoCalcSizeParaFormat(const CParaFormat& aDesiredFormat,TParaFormatMask aMask,const CParaFormat& aCurrentFormat);
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void DoSetParaFormat(const CParaFormat& aDesiredFormat,TParaFormatMask aMask,const CParaFormat& aCurrentFormat);
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void RemoveRedundantCharFormat(TCharFormatMask& aMask,const TCharFormatX& aFormat,const TCharFormatX& aEffectiveFormat);
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TInt DoCalcSizeCharFormat(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);
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void DoStoreCharFormat(const TCharFormatX& aCharFormat,TCharFormatXMask aMask);
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TUint8* StoreBullet(TUint8* aPtr,const TBullet& aSource);
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TUint8* StoreBorder(TUint8* aPtr,TTextFormatAttribute aType,const TParaBorder& aSource);
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TUint8* StoreTab(TUint8* aPtr,const TTabStop& aSource);
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TInt StoreTabs(TUint8*& aPtr,const CParaFormat& aDesiredFormat,const CParaFormat& aCurrentFormat,TBool aStoreData);
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TInt MergeTabLists(TUint8*& aPtr,const CParaFormat& aDesiredFormat,TInt aDesiredTabCount,
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const CParaFormat& aCurrentFormat,TInt aCurrentTabCount,TBool aStoreData);
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void StoreAllTabs(TUint8*& aPtr,const CParaFormat& aSource);
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TUint8* Store(TUint8* aPtr,const TLogicalRgb& aRgb);
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TUint8* Store(TUint8* aPtr,const TTypeface& aTypeface);
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TUint8* ReadValue(TUint8* aPtr,TLogicalRgb& aRgb)const;
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TUint8* ReadValue(TUint8* aPtr,TTypeface& aTypeface)const;
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TUint8* ReadValue(TUint8* aPtr,TParaBorder& aBorder)const;
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TUint8* ReadValue(TUint8* aPtr,TBullet& aBullet)const;
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TUint8* ReadTabL(TUint8* aPtr,CParaFormat& aTarget)const;
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TUint8* iBase; // start of stored bytecode
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TUint8* iEnd; // end of stored bytecode
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__DECLARE_TEST;
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private:
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void TestInvariantL() const;
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TBool DoInvariantCheck() const;
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};
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#endif
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