/*

* Copyright (c) 2008 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: 

*

*/

#ifndef MWSGRAPHICSCONTEXTTOBITGDIMAPPINGS_H

#define MWSGRAPHICSCONTEXTTOBITGDIMAPPINGS_H

#include <gdi.h>

#include <graphics/wsgraphicscontext.h>

class MWsGraphicsContextToBitGdiMappings

	{

public:

	static CGraphicsContext::TFillRule Convert(MWsGraphicsContext::TFillRule aFillRule) { return (CGraphicsContext::TFillRule)aFillRule; }

	static CGraphicsContext::TPenStyle Convert(MWsGraphicsContext::TPenStyle aPenStyle) { return (CGraphicsContext::TPenStyle)aPenStyle; }

	static CGraphicsContext::TBrushStyle Convert(MWsGraphicsContext::TBrushStyle aBrushStyle) { return (CGraphicsContext::TBrushStyle)aBrushStyle; }

	static CGraphicsContext::TTextAlign Convert(MWsGraphicsContext::TTextAlign aTextAlign) { return (CGraphicsContext::TTextAlign)aTextAlign; }

	static TFontUnderline Convert(MWsGraphicsContext::TFontUnderline aFontUnderline) { return (TFontUnderline)aFontUnderline; }

	static TFontStrikethrough Convert(MWsGraphicsContext::TFontStrikethrough aFontStrikethrough) { return (TFontStrikethrough)aFontStrikethrough; }

	static CGraphicsContext::TDrawMode LossyConvert(MWsGraphicsContext::TDrawMode aDrawMode)

		{

		if(aDrawMode == MWsGraphicsContext::EDrawModePEN)

			return CGraphicsContext::EDrawModePEN;

		if(aDrawMode == MWsGraphicsContext::EDrawModeWriteAlpha)

			return CGraphicsContext::EDrawModeWriteAlpha;

		return CGraphicsContext::EDrawModePEN;

		}

	static TInt LossyConvertPenSize(const TSize& aSize) { return aSize.iWidth; }

	};

template<class T>

class TArrayWrapper : public TArray<T>

	{

public:

	TArrayWrapper(const T* aArray, TInt aCount);

private:

	static TInt Count(const CBase* aPtr);

	static const TAny* At(const CBase* aPtr, TInt aIndex);

private:

	const T* iArray;

	const TInt iCount;

	};

template<class T>

TArrayWrapper<T>::TArrayWrapper(const T* aArray, TInt aCount)

	: TArray<T>(TArrayWrapper::Count, TArrayWrapper::At, reinterpret_cast<const CBase*>(this)), iArray(aArray), iCount(aCount)

	{

	//reinterpret_cast above since this class doesn't derive from CBase but TArray is

	//only silly requiring CBase as opposed to TAny, so this is safe

	ASSERT(iArray);

	}

template<class T>

TInt TArrayWrapper<T>::Count(const CBase* aPtr)

	{

	//reinterpret_cast since this class doesn't derive from CBase but TArray is

	//only silly requiring CBase as opposed to TAny, so this is safe

	const TArrayWrapper* self = reinterpret_cast<const TArrayWrapper*>(aPtr);

	return self->iCount;

	}

template<class T>

const TAny* TArrayWrapper<T>::At(const CBase* aPtr, TInt aIndex)

	{

	//reinterpret_cast since this class doesn't derive from CBase but TArray is

	//only silly requiring CBase as opposed to TAny, so this is safe

	const TArrayWrapper* self = reinterpret_cast<const TArrayWrapper*>(aPtr);

	if(!Rng(0, aIndex, self->iCount - 1))

		User::Panic(_L("USER"), 130); //out of bounds (RArray/RPointerArray)

	return self->iArray + aIndex;

	}

#endif //MWSGRAPHICSCONTEXTTOBITGDIMAPPINGS_H