1 // Copyright (c) 2008-2009 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 __MWSGRAPHICSCONTEXTTODIRECTGDIMAPPINGS_H__

    17 #define __MWSGRAPHICSCONTEXTTODIRECTGDIMAPPINGS_H__

    18 

    19 #include <gdi.h>

    20 #include <graphics/wsgraphicscontext.h>

    21 #include <graphics/directgditypes.h>

    22 

    23 class MWsGraphicsContextToDirectGdiMappings

    24 	{

    25 public:

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

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

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

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

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

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

    32 	static const DirectGdi::TTextParameters* Convert(const MWsGraphicsContext::TTextParameters* aParam) { return reinterpret_cast<const DirectGdi::TTextParameters*>(aParam); }

    33 	static DirectGdi::TDrawMode LossyConvert(MWsGraphicsContext::TDrawMode aDrawMode)

    34 		{return (aDrawMode==MWsGraphicsContext::EDrawModeWriteAlpha ? DirectGdi::EDrawModeWriteAlpha : DirectGdi::EDrawModePEN);}

    35 	};

    36 

    37 

    38 template<class T>

    39 class TArrayWrapper : public TArray<T>

    40 	{

    41 public:

    42 	TArrayWrapper(const T* aArray, TInt aCount);

    43 private:

    44 	static TInt Count(const CBase* aPtr);

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

    46 private:

    47 	const T* iArray;

    48 	const TInt iCount;

    49 	};

    50 

    51 template<class T>

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

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

    54 	{

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

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

    57 	ASSERT(iArray);

    58 	}

    59 

    60 template<class T>

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

    62 	{

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

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

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

    66 	return self->iCount;

    67 	}

    68 

    69 template<class T>

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

    71 	{

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

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

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

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

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

    77 	return self->iArray + aIndex;

    78 	}

    79 

    80 

    81 #endif	//__MWSGRAPHICSCONTEXTTODIRECTGDIMAPPINGS_H__