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// Copyright (c) 2002-2009 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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//
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#ifndef BIDICOMPACT_H_
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#define BIDICOMPACT_H_
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#include <e32std.h>
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#include <bidi.h>
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class TRunInfoCompact
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/**
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Stores information about a run and how to re-order it.
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@internalTechnology
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*/
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{
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public:
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/** Describes text to be re-ordered.
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@internalTechnology */
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class TReorderingContext
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{
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public:
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/** Where the logical-order text starts. */
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const TText* iSource;
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/** The start of the line. */
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TInt iStart;
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/** One past the end of the line. */
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TInt iEnd;
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/**
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* Truncation character, if there is to be one on this line. Otherwise,
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* 0xFFFF.
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*/
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TChar iTruncation;
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/** ETrue if the line must join at its beginning. */
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TBool iJoinsAtStart;
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/** ETrue if the line must join at its end. */
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TBool iJoinsAtEnd;
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};
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/** How to re-order the run.
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@internalTechnology */
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enum TTypeFlags
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{
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/** Reverse the run, but not surrogate pairs or combining characters. */
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EFRightToLeft = 0x80000000,
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/** Simply reverse the run, do not check for surrogates or combiners. */
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EFNoPairsNoCombiners = 0x40000000,
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/** No mirrored characters are present. */
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EFNoMirroredCharacters = 0x20000000
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};
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/** Sets up an empty run.
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@internalTechnology */
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TRunInfoCompact() : iStart(0), iLengthAndType(0) {}
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TRunInfoCompact(TInt aStart, TInt aLength, TBool aReverse,
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const TText* aText);
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TRunInfoCompact(TInt aStart, TInt aLength, TBool aReverse);
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TBool AddRun(const TRunInfoCompact& aToBeAdded);
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TText* Reorder(TText* aDestination, const TReorderingContext& aContext) const;
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/** @return The start of this run.
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@internalTechnology */
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TInt Start() const { return iStart; }
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/**@return The length of this run.
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@internalTechnology */
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TInt Length() const { return static_cast<TInt>(iLengthAndType & 0x0FFFFFFF); }
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/** @return The flags associated with this run.
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@internalTechnology */
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TInt TypeFlags() const { return iLengthAndType & 0xF0000000; }
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static TInt Convert(TRunInfoCompact* aBuffer, const TDesC& aText,
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const TBidirectionalState::TRunInfo* aRunArray, TInt aArraySize);
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static TBool JoinBefore(const TText* aText, TInt aIndex);
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private:
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TInt iStart;
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TUint iLengthAndType;
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};
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#endif
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