textrendering/texthandling/inc/TXTFMSTM.H
changeset 32 8b9155204a54
parent 0 1fb32624e06b
child 37 6be019398652
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/textrendering/texthandling/inc/TXTFMSTM.H	Fri Jun 04 10:37:54 2010 +0100
@@ -0,0 +1,83 @@
+/*
+* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+* PRIVATE HEADER FILE CONTAINING IMPLEMENTATION SPECIFIC CLASSES
+*
+*/
+
+
+#ifndef __TXTFMSTM_H__
+#define __TXTFMSTM_H__
+
+#include <e32std.h>
+#include <txtfrmat.h>
+
+// forward declarations
+class RReadStream;
+class RWriteStream;
+class TCharFormatX;
+class TCharFormatXMask;
+
+/**
+stores format attributes as bytecode
+@internalComponent
+*/
+class RFormatStream
+	{
+public:
+	RFormatStream();
+	void CopyL(const RFormatStream& aSource);
+	void ExternalizeL(RWriteStream& aStream) const;
+	void InternalizeL(RReadStream& aStream);
+	void Reset();
+	const TUint8* Ptr(TInt& aSize) const;
+	void SetParaFormatL(const CParaFormat& aDesiredFormat,const TParaFormatMask& aDesiredMask,const CParaFormat& aCurrentFormat);
+	void SenseParaFormatL(CParaFormat& aParaFormat,TParaFormatMask& aMask,CParaFormat::TParaFormatGetMode aMode)const;
+	void SetCharFormatL(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);
+	void SenseCharFormat(TCharFormatX& aCharFormat,TCharFormatXMask& aMask)const;
+	void Swap(RFormatStream& aStream);
+
+private:
+	void AllocL(TInt aSize);
+	TInt Length(TUint8*& aPtr,TTextFormatAttribute aType)const;
+	TInt DoCalcSizeParaFormat(const CParaFormat& aDesiredFormat,TParaFormatMask aMask,const CParaFormat& aCurrentFormat);
+	void DoSetParaFormat(const CParaFormat& aDesiredFormat,TParaFormatMask aMask,const CParaFormat& aCurrentFormat);
+	void RemoveRedundantCharFormat(TCharFormatMask& aMask,const TCharFormatX& aFormat,const TCharFormatX& aEffectiveFormat);
+	TInt DoCalcSizeCharFormat(const TCharFormatX& aCharFormat,const TCharFormatXMask& aMask);
+	void DoStoreCharFormat(const TCharFormatX& aCharFormat,TCharFormatXMask aMask);
+	TUint8* StoreBullet(TUint8* aPtr,const TBullet& aSource);
+	TUint8* StoreBorder(TUint8* aPtr,TTextFormatAttribute aType,const TParaBorder& aSource);
+	TUint8* StoreTab(TUint8* aPtr,const TTabStop& aSource);
+	TInt StoreTabs(TUint8*& aPtr,const CParaFormat& aDesiredFormat,const CParaFormat& aCurrentFormat,TBool aStoreData);
+	TInt MergeTabLists(TUint8*& aPtr,const CParaFormat& aDesiredFormat,TInt aDesiredTabCount,
+					   const CParaFormat& aCurrentFormat,TInt aCurrentTabCount,TBool aStoreData);
+	void StoreAllTabs(TUint8*& aPtr,const CParaFormat& aSource);
+	TUint8* Store(TUint8* aPtr,const TLogicalRgb& aRgb);
+	TUint8* Store(TUint8* aPtr,const TTypeface& aTypeface);
+	TUint8* ReadValue(TUint8* aPtr,TLogicalRgb& aRgb)const;
+	TUint8* ReadValue(TUint8* aPtr,TTypeface& aTypeface)const;
+	TUint8* ReadValue(TUint8* aPtr,TParaBorder& aBorder)const;
+	TUint8* ReadValue(TUint8* aPtr,TBullet& aBullet)const;
+	TUint8* ReadTabL(TUint8* aPtr,CParaFormat& aTarget)const;
+
+	TUint8* iBase;	// start of stored bytecode
+	TUint8* iEnd;	// end of stored bytecode
+
+	__DECLARE_TEST;
+private:
+	void TestInvariantL() const;
+	TBool DoInvariantCheck() const;
+	};
+
+#endif