sl@0: /*
sl@0: * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: * PRIVATE HEADER FILE CONTAINING IMPLEMENTATION SPECIFIC CLASSES
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #ifndef __TXTFMSTM_H__
sl@0: #define __TXTFMSTM_H__
sl@0: 
sl@0: #include <e32std.h>
sl@0: #include <txtfrmat.h>
sl@0: 
sl@0: // forward declarations
sl@0: class RReadStream;
sl@0: class RWriteStream;
sl@0: class TCharFormatX;
sl@0: class TCharFormatXMask;
sl@0: 
sl@0: /**
sl@0: stores format attributes as bytecode, this class is intended for internal use only. 
sl@0: @publishedAll
sl@0: */
sl@0: class RFormatStream
sl@0: 	{
sl@0: public:
sl@0: 	RFormatStream();
sl@0: 	void CopyL(const RFormatStream& aSource);
sl@0: 	void ExternalizeL(RWriteStream& aStream) const;
sl@0: 	void InternalizeL(RReadStream& aStream);
sl@0: 	void Reset();
sl@0: 	const TUint8* Ptr(TInt& aSize) const;
sl@0: 	void SetParaFormatL(const CParaFormat& aDesiredFormat,const TParaFormatMask& aDesiredMask,const CParaFormat& aCurrentFormat);
sl@0: 	void SenseParaFormatL(CParaFormat& aParaFormat,TParaFormatMask& aMask,CParaFormat::TParaFormatGetMode aMode)const;
sl@0: 	void SetCharFormatL(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);
sl@0: 	void SenseCharFormat(TCharFormatX& aCharFormat,TCharFormatXMask& aMask)const;
sl@0: 	void Swap(RFormatStream& aStream);
sl@0: 
sl@0: private:
sl@0: 	void AllocL(TInt aSize);
sl@0: 	TInt Length(TUint8*& aPtr,TTextFormatAttribute aType)const;
sl@0: 	TInt DoCalcSizeParaFormat(const CParaFormat& aDesiredFormat,TParaFormatMask aMask,const CParaFormat& aCurrentFormat);
sl@0: 	void DoSetParaFormat(const CParaFormat& aDesiredFormat,TParaFormatMask aMask,const CParaFormat& aCurrentFormat);
sl@0: 	void RemoveRedundantCharFormat(TCharFormatMask& aMask,const TCharFormatX& aFormat,const TCharFormatX& aEffectiveFormat);
sl@0: 	TInt DoCalcSizeCharFormat(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);
sl@0: 	void DoStoreCharFormat(const TCharFormatX& aCharFormat,TCharFormatXMask aMask);
sl@0: 	TUint8* StoreBullet(TUint8* aPtr,const TBullet& aSource);
sl@0: 	TUint8* StoreBorder(TUint8* aPtr,TTextFormatAttribute aType,const TParaBorder& aSource);
sl@0: 	TUint8* StoreTab(TUint8* aPtr,const TTabStop& aSource);
sl@0: 	TInt StoreTabs(TUint8*& aPtr,const CParaFormat& aDesiredFormat,const CParaFormat& aCurrentFormat,TBool aStoreData);
sl@0: 	TInt MergeTabLists(TUint8*& aPtr,const CParaFormat& aDesiredFormat,TInt aDesiredTabCount,
sl@0: 					   const CParaFormat& aCurrentFormat,TInt aCurrentTabCount,TBool aStoreData);
sl@0: 	void StoreAllTabs(TUint8*& aPtr,const CParaFormat& aSource);
sl@0: 	TUint8* Store(TUint8* aPtr,const TLogicalRgb& aRgb);
sl@0: 	TUint8* Store(TUint8* aPtr,const TTypeface& aTypeface);
sl@0: 	TUint8* ReadValue(TUint8* aPtr,TLogicalRgb& aRgb)const;
sl@0: 	TUint8* ReadValue(TUint8* aPtr,TTypeface& aTypeface)const;
sl@0: 	TUint8* ReadValue(TUint8* aPtr,TParaBorder& aBorder)const;
sl@0: 	TUint8* ReadValue(TUint8* aPtr,TBullet& aBullet)const;
sl@0: 	TUint8* ReadTabL(TUint8* aPtr,CParaFormat& aTarget)const;
sl@0: 
sl@0: 	TUint8* iBase;	// start of stored bytecode
sl@0: 	TUint8* iEnd;	// end of stored bytecode
sl@0: 
sl@0: 	__DECLARE_TEST;
sl@0: private:
sl@0: 	void TestInvariantL() const;
sl@0: 	TBool DoInvariantCheck() const;
sl@0: 	};
sl@0: 
sl@0: #endif