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