1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // 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

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // PRIVATE HEADER FILE CONTAINING IMPLEMENTATION SPECIFIC CLASSES

    15 // 

    16 //

    17 

    18 #ifndef __TXTFMSTM_H__

    19 #define __TXTFMSTM_H__

    20 

    21 #include <e32std.h>

    22 #include <txtfrmat.h>

    23 

    24 // forward declarations

    25 class RReadStream;

    26 class RWriteStream;

    27 class TCharFormatX;

    28 class TCharFormatXMask;

    29 

    30 /**

    31 stores format attributes as bytecode

    32 @internalComponent

    33 */

    34 class RFormatStream

    35 	{

    36 public:

    37 	RFormatStream();

    38 	void CopyL(const RFormatStream& aSource);

    39 	void ExternalizeL(RWriteStream& aStream) const;

    40 	void InternalizeL(RReadStream& aStream);

    41 	void Reset();

    42 	const TUint8* Ptr(TInt& aSize) const;

    43 	void SetParaFormatL(const CParaFormat* aDesiredFormat,const TParaFormatMask& aDesiredMask,const CParaFormat* aCurrentFormat);

    44 	void SenseParaFormatL(CParaFormat* aParaFormat,TParaFormatMask& aMask,CParaFormat::TParaFormatGetMode aMode)const;

    45 	void SetCharFormatL(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);

    46 	void SenseCharFormat(TCharFormatX& aCharFormat,TCharFormatXMask& aMask)const;

    47 	void Swap(RFormatStream& aStream);

    48 

    49 private:

    50 	void AllocL(TInt aSize);

    51 	TInt Length(TUint8*& aPtr,TTextFormatAttribute aType)const;

    52 	TInt DoCalcSizeParaFormat(const CParaFormat* aDesiredFormat,TParaFormatMask aMask,const CParaFormat* aCurrentFormat);

    53 	void DoSetParaFormat(const CParaFormat* aDesiredFormat,TParaFormatMask aMask,const CParaFormat* aCurrentFormat);

    54 	void RemoveRedundantCharFormat(TCharFormatMask& aMask,const TCharFormatX& aFormat,const TCharFormatX& aEffectiveFormat);

    55 	TInt DoCalcSizeCharFormat(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);

    56 	void DoStoreCharFormat(const TCharFormatX& aCharFormat,TCharFormatXMask aMask);

    57 	TUint8* StoreBullet(TUint8* aPtr,const TBullet& aSource);

    58 	TUint8* StoreBorder(TUint8* aPtr,TTextFormatAttribute aType,const TParaBorder& aSource);

    59 	TUint8* StoreTab(TUint8* aPtr,const TTabStop& aSource);

    60 	TInt StoreTabs(TUint8*& aPtr,const CParaFormat* aDesiredFormat,const CParaFormat* aCurrentFormat,TBool aStoreData);

    61 	TInt MergeTabLists(TUint8*& aPtr,const CParaFormat* aDesiredFormat,TInt aDesiredTabCount,

    62 					   const CParaFormat* aCurrentFormat,TInt aCurrentTabCount,TBool aStoreData);

    63 	void StoreAllTabs(TUint8*& aPtr,const CParaFormat* aSource);

    64 	TUint8* Store(TUint8* aPtr,const TLogicalRgb& aRgb);

    65 	TUint8* Store(TUint8* aPtr,const TTypeface& aTypeface);

    66 	TUint8* ReadValue(TUint8* aPtr,TLogicalRgb& aRgb)const;

    67 	TUint8* ReadValue(TUint8* aPtr,TTypeface& aTypeface)const;

    68 	TUint8* ReadValue(TUint8* aPtr,TParaBorder& aBorder)const;

    69 	TUint8* ReadValue(TUint8* aPtr,TBullet& aBullet)const;

    70 	TUint8* ReadTabL(TUint8* aPtr,CParaFormat* aTarget)const;

    71 

    72 	TUint8* iBase;	// start of stored bytecode

    73 	TUint8* iEnd;	// end of stored bytecode

    74 

    75 	__DECLARE_TEST;

    76 private:

    77 	void TestInvariantL() const;

    78 	TBool DoInvariantCheck() const;

    79 	};

    80 

    81 #endif