1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/graphics/graphicsdeviceinterface/gdi/sgdi/BidiCompact.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,93 @@
     1.4 +// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#ifndef BIDICOMPACT_H_
    1.20 +#define BIDICOMPACT_H_
    1.21 +
    1.22 +#include <e32std.h>
    1.23 +#include <bidi.h>
    1.24 +
    1.25 +class TRunInfoCompact
    1.26 +/**
    1.27 +Stores information about a run and how to re-order it.
    1.28 +@internalTechnology
    1.29 +*/
    1.30 +	{
    1.31 +public:
    1.32 +	/** Describes text to be re-ordered.
    1.33 +	@internalTechnology */
    1.34 +	class TReorderingContext
    1.35 +		{
    1.36 +	public:
    1.37 +		/** Where the logical-order text starts. */
    1.38 +		const TText* iSource;
    1.39 +		/** The start of the line. */
    1.40 +		TInt iStart;
    1.41 +		/** One past the end of the line. */
    1.42 +		TInt iEnd;
    1.43 +		/**
    1.44 +		 * Truncation character, if there is to be one on this line. Otherwise,
    1.45 +		 * 0xFFFF.
    1.46 +		 */
    1.47 +		TChar iTruncation;
    1.48 +		/** ETrue if the line must join at its beginning. */
    1.49 +		TBool iJoinsAtStart;
    1.50 +		/** ETrue if the line must join at its end. */
    1.51 +		TBool iJoinsAtEnd;
    1.52 +		};
    1.53 +	
    1.54 +	/** How to re-order the run.
    1.55 +	@internalTechnology */
    1.56 +	enum TTypeFlags
    1.57 +		{
    1.58 +		/** Reverse the run, but not surrogate pairs or combining characters. */
    1.59 +		EFRightToLeft = 0x80000000,
    1.60 +		/** Simply reverse the run, do not check for surrogates or combiners. */
    1.61 +		EFNoPairsNoCombiners = 0x40000000,
    1.62 +		/** No mirrored characters are present. */
    1.63 +		EFNoMirroredCharacters = 0x20000000
    1.64 +		};
    1.65 +	
    1.66 +	/**	Sets up an empty run.
    1.67 +	@internalTechnology */
    1.68 +	TRunInfoCompact() : iStart(0), iLengthAndType(0) {}
    1.69 +	TRunInfoCompact(TInt aStart, TInt aLength, TBool aReverse,
    1.70 +		const TText* aText);
    1.71 +	TRunInfoCompact(TInt aStart, TInt aLength, TBool aReverse);
    1.72 +	TBool AddRun(const TRunInfoCompact& aToBeAdded);
    1.73 +	TText* Reorder(TText* aDestination, const TReorderingContext& aContext) const;
    1.74 +
    1.75 +	/**	@return The start of this run.
    1.76 +	@internalTechnology */
    1.77 +	TInt Start() const { return iStart; }
    1.78 +
    1.79 +	/**@return The length of this run.
    1.80 +	@internalTechnology */
    1.81 +	TInt Length() const { return static_cast<TInt>(iLengthAndType & 0x0FFFFFFF); }
    1.82 +
    1.83 +	/** @return The flags associated with this run.
    1.84 +	@internalTechnology */
    1.85 +	TInt TypeFlags() const { return iLengthAndType & 0xF0000000; }
    1.86 +
    1.87 +	static TInt Convert(TRunInfoCompact* aBuffer, const TDesC& aText,
    1.88 +		const TBidirectionalState::TRunInfo* aRunArray, TInt aArraySize);
    1.89 +	static TBool JoinBefore(const TText* aText, TInt aIndex);
    1.90 +private:
    1.91 +	TInt iStart;
    1.92 +	TUint iLengthAndType;
    1.93 +	};
    1.94 +
    1.95 +#endif
    1.96 +