williamr@2: // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@2: // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
williamr@2: // which accompanies this distribution, and is available
williamr@2: // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: // PRIVATE HEADER FILE CONTAINING IMPLEMENTATION SPECIFIC CLASSES
williamr@2: // 
williamr@2: //
williamr@2: 
williamr@2: #ifndef __TXTFMSTM_H__
williamr@2: #define __TXTFMSTM_H__
williamr@2: 
williamr@2: #include <e32std.h>
williamr@2: #include <txtfrmat.h>
williamr@2: 
williamr@2: // forward declarations
williamr@2: class RReadStream;
williamr@2: class RWriteStream;
williamr@2: class TCharFormatX;
williamr@2: class TCharFormatXMask;
williamr@2: 
williamr@2: /**
williamr@2: stores format attributes as bytecode
williamr@2: @internalComponent
williamr@2: */
williamr@2: class RFormatStream
williamr@2: 	{
williamr@2: public:
williamr@2: 	RFormatStream();
williamr@2: 	void CopyL(const RFormatStream& aSource);
williamr@2: 	void ExternalizeL(RWriteStream& aStream) const;
williamr@2: 	void InternalizeL(RReadStream& aStream);
williamr@2: 	void Reset();
williamr@2: 	const TUint8* Ptr(TInt& aSize) const;
williamr@2: 	void SetParaFormatL(const CParaFormat* aDesiredFormat,const TParaFormatMask& aDesiredMask,const CParaFormat* aCurrentFormat);
williamr@2: 	void SenseParaFormatL(CParaFormat* aParaFormat,TParaFormatMask& aMask,CParaFormat::TParaFormatGetMode aMode)const;
williamr@2: 	void SetCharFormatL(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);
williamr@2: 	void SenseCharFormat(TCharFormatX& aCharFormat,TCharFormatXMask& aMask)const;
williamr@2: 	void Swap(RFormatStream& aStream);
williamr@2: 
williamr@2: private:
williamr@2: 	void AllocL(TInt aSize);
williamr@2: 	TInt Length(TUint8*& aPtr,TTextFormatAttribute aType)const;
williamr@2: 	TInt DoCalcSizeParaFormat(const CParaFormat* aDesiredFormat,TParaFormatMask aMask,const CParaFormat* aCurrentFormat);
williamr@2: 	void DoSetParaFormat(const CParaFormat* aDesiredFormat,TParaFormatMask aMask,const CParaFormat* aCurrentFormat);
williamr@2: 	void RemoveRedundantCharFormat(TCharFormatMask& aMask,const TCharFormatX& aFormat,const TCharFormatX& aEffectiveFormat);
williamr@2: 	TInt DoCalcSizeCharFormat(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);
williamr@2: 	void DoStoreCharFormat(const TCharFormatX& aCharFormat,TCharFormatXMask aMask);
williamr@2: 	TUint8* StoreBullet(TUint8* aPtr,const TBullet& aSource);
williamr@2: 	TUint8* StoreBorder(TUint8* aPtr,TTextFormatAttribute aType,const TParaBorder& aSource);
williamr@2: 	TUint8* StoreTab(TUint8* aPtr,const TTabStop& aSource);
williamr@2: 	TInt StoreTabs(TUint8*& aPtr,const CParaFormat* aDesiredFormat,const CParaFormat* aCurrentFormat,TBool aStoreData);
williamr@2: 	TInt MergeTabLists(TUint8*& aPtr,const CParaFormat* aDesiredFormat,TInt aDesiredTabCount,
williamr@2: 					   const CParaFormat* aCurrentFormat,TInt aCurrentTabCount,TBool aStoreData);
williamr@2: 	void StoreAllTabs(TUint8*& aPtr,const CParaFormat* aSource);
williamr@2: 	TUint8* Store(TUint8* aPtr,const TLogicalRgb& aRgb);
williamr@2: 	TUint8* Store(TUint8* aPtr,const TTypeface& aTypeface);
williamr@2: 	TUint8* ReadValue(TUint8* aPtr,TLogicalRgb& aRgb)const;
williamr@2: 	TUint8* ReadValue(TUint8* aPtr,TTypeface& aTypeface)const;
williamr@2: 	TUint8* ReadValue(TUint8* aPtr,TParaBorder& aBorder)const;
williamr@2: 	TUint8* ReadValue(TUint8* aPtr,TBullet& aBullet)const;
williamr@2: 	TUint8* ReadTabL(TUint8* aPtr,CParaFormat* aTarget)const;
williamr@2: 
williamr@2: 	TUint8* iBase;	// start of stored bytecode
williamr@2: 	TUint8* iEnd;	// end of stored bytecode
williamr@2: 
williamr@2: 	__DECLARE_TEST;
williamr@2: private:
williamr@2: 	void TestInvariantL() const;
williamr@2: 	TBool DoInvariantCheck() const;
williamr@2: 	};
williamr@2: 
williamr@2: #endif