1 // Copyright (c) 2002-2009 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 "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef BIDIVISUAL_H_

    17 #define BIDIVISUAL_H_

    18 

    19 #include <bidi.h>

    20 

    21 class TBidiLogicalToVisual

    22 /** 

    23 This class is a low-level class for bi-directionally reordering text. It 

    24 allows the re-ordering of text using no leaving functions at all, and provides 

    25 a finer degree of control than TBidiText. However, it should not be used 

    26 without understanding the basics of the Unicode Bi-directional Reordering 

    27 Algorithm. 

    28 @publishedAll

    29 @released

    30 */

    31 	{

    32 public:

    33 	enum {KMinCharAvailable = 4};

    34 

    35 	IMPORT_C TBidiLogicalToVisual(const TDesC& aText, TBool aRightToLeft,

    36 		TBidirectionalState::TRunInfo* aRunInfoArray, TInt aRunInfoLength);

    37 	IMPORT_C TBidiLogicalToVisual(const TDesC& aText,

    38 		TBidirectionalState::TRunInfo* aRunInfoArray, TInt aRunInfoLength);

    39 	IMPORT_C TInt Reorder();

    40 	IMPORT_C void GetVisualLine(TDes& aLine, TInt aStart, TInt aEnd,

    41 		TChar aTruncationChar);

    42 private:

    43 	const TDesC& iText;

    44 	TBool iRightToLeft;

    45 	TBidirectionalState::TRunInfo* iRunInfoArray;

    46 	TInt iRunInfoArrayLength;

    47 	TInt iRuns;

    48 	TUint32 iSpare2;

    49 	};

    50 

    51 #endif