/*

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

 * All rights reserved.

 * This component and the accompanying materials are made available

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

 * which accompanies this distribution, and is available

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

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: 

 * This wraps the ICU layout Engine in a CBase class

 * and maps the Symbian structures to ICU structures

 *

 */

 #ifndef __CICULAYOUTENGINE_H__

 #define __CICULAYOUTENGINE_H__

 // System includes

 #include <e32base.h>

 #include <openfont.h>

 #include <shapeinfo.h>

 #include <graphics/shapeimpl.h>

 #include "ScriptAndLanguageTags.h"

 class SymbianFontInstance;

 // if ICU headers not used define

 #ifndef U_NAMESPACE_USE

 class LayoutEngine;

 #endif

 /**

 Encapsulates the ICU Layout Engine in a CShaper class

 and maps the Symbian objects to ICU objects

 @internalTechnology 

 */

 class CIcuLayoutEngine : public CShaper

 	{

 public:

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

 	~CIcuLayoutEngine();

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

 	virtual void* ExtendedInterface (TUid aInterfaceId);

 private:

 	CIcuLayoutEngine(TUint32 aScript, TUint32 aLanguage);

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

 	// leaving version of shaping method

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

 	// the client heap pointer passed in during construction

 	RHeap* iClientHeap;

 	// Open source Icu layout engine

 	LayoutEngine* iEngine;	 

 	// Symbian font data

 	SymbianFontInstance* iFontInstance;

 	// The script which this shaper will shape

 	TUint32 iScript;

 	//The language which this shaper will shape

 	TUint32 iLanguage;

 	};

 #endif