1 /*

     2 * Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * This wraps the ICU layout Engine in a CBase class

    16 * and maps the Symbian structures to ICU structures

    17 *

    18 */

    19 

    20 

    21 #ifndef __CICULAYOUTENGINE_H__

    22 #define __CICULAYOUTENGINE_H__

    23 

    24 // System includes

    25 #include <e32base.h>

    26 

    27 #include <openfont.h>

    28 #include <shapeinfo.h>

    29 #include <graphics/shapeimpl.h>

    30 #include "ScriptAndLanguageTags.h"

    31 

    32 class SymbianFontInstance;

    33 

    34 // if ICU headers not used define

    35 #ifndef U_NAMESPACE_USE

    36 class LayoutEngine;

    37 #endif

    38 

    39 /**

    40 Encapsulates the ICU Layout Engine in a CShaper class

    41 and maps the Symbian objects to ICU objects

    42 @internalTechnology 

    43 */

    44 class CIcuLayoutEngine : public CShaper

    45 	{

    46 public:

    47 

    48 	static CShaper* NewL(CBitmapFont* aBitmapFont, TInt aScript, TInt aLanguage, RHeap* aHeap);

    49 	~CIcuLayoutEngine();

    50 	

    51 	virtual TInt ShapeText(TShapeHeader*& aOutput, const TInput& aInput, RHeap* aHeapForOutput);

    52 	virtual void* ExtendedInterface (TUid aInterfaceId);

    53 		

    54 private:

    55 	CIcuLayoutEngine(TUint32 aScript, TUint32 aLanguage);

    56 	TInt  ConstructL(CBitmapFont*, TInt aScript, TInt aLanguage, RHeap* iHeap);

    57 

    58 	// leaving version of shaping method

    59 	void  IcuShapeTextL(TShapeHeader*& aOutput, const TInput& aInput, RHeap* aHeapForOutput);

    60 	

    61 	// the client heap pointer passed in during construction

    62 	RHeap* iClientHeap;

    63 

    64 	// Open source Icu layout engine

    65 	LayoutEngine* iEngine;	 

    66 	

    67 	// Symbian font data

    68 	SymbianFontInstance* iFontInstance;

    69 	

    70 	// The script which this shaper will shape

    71 	TUint32 iScript;

    72 	

    73 	//The language which this shaper will shape

    74 	TUint32 iLanguage;

    75 	};

    76 #endif