// Copyright (c) 1996-2009 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:

// Shells for window server bitmap class

// Note: Note: A pointer to CWsBitmap must have the same pointer value as a pointer

// to the associated CFbsBitmap, otherwise code in BitGdi component will be

// Broken.

// 

//

#include <e32std.h>

#include "../SERVER/w32cmd.h"

#include "CLIENT.H"

EXPORT_C CWsBitmap::CWsBitmap()

/** Default constructor. Developers should use the other constructor overload. */

	{

	}

EXPORT_C CWsBitmap::CWsBitmap(RWsSession &aWs) : MWsClientClass(aWs.iBuffer)

/** Constructor which takes a window server session as an argument.

@param aWs Handle to window server session. */

	{

	}

EXPORT_C CWsBitmap::~CWsBitmap()

/** Destructor. */

	{

	Reset();

	}

EXPORT_C void CWsBitmap::Reset()

/** Releases the bitmap's handle from the font and bitmap server.

The function also decrements the bitmap's access count in the font and bitmap 

server. The server-side bitmap is deleted only if the access count for the 

bitmap decrements to zero. */

	{

	if (iBuffer && iWsHandle)

		Write(EWsBitmapOpFree);

	iWsHandle=NULL;

	CFbsBitmap::Reset();

	}

TInt CWsBitmap::createWsBitmap(TInt aErr)

	{

	if (aErr==KErrNone)

		{

		TWsClCmdCreateBitmap createBitmap;

		createBitmap.handle=Handle();

		TInt ret;

		if ((ret=iBuffer->WriteReplyWs(&createBitmap,sizeof(createBitmap),EWsClOpCreateBitmap))<0)

			{

			CFbsBitmap::Reset();

			aErr=ret;

			}

		else

			iWsHandle=ret;

		}

	return(aErr);

	}

EXPORT_C TInt CWsBitmap::Create(const TSize& aSizeInPixels,TDisplayMode aDispMode)

/** Creates a bitmap, specifying the size and display mode.

This function, if successful, always causes a flush of the window server buffer.

@param aSizeInPixels The size of the bitmap to be created. 

@param aDispMode The display-mode of the bitmap to be created. 

@return KErrNone if successful, KErrCouldNotConnect if no connection to the 

font and bitmap server could be made, KErrArgument if aSizeInPixels is illegal.

@see CFbsBitmap::Create() */

	{

	Reset();

	return(createWsBitmap(CFbsBitmap::Create(aSizeInPixels,aDispMode)));

	}

EXPORT_C TInt CWsBitmap::Duplicate(TInt aHandle)

/** Makes this bitmap a duplicate of the specified bitmap.

This function, if successful, always causes a flush of the window server buffer.

@param aHandle The handle of the bitmap to be duplicated. 

@return KErrNone if successful, KErrCouldNotConnect if no connection to the 

font and bitmap server could be made, or KErrUnknown if no bitmap could be 

found whose handle is aHandle. 

@see CFbsBitmap::Duplicate() */

	{

	Reset();

	return(createWsBitmap(CFbsBitmap::Duplicate(aHandle)));

	}

EXPORT_C TInt CWsBitmap::Load(const TDesC& aFileName,TInt32 aId,TBool aShareIfLoaded)

/** Loads a bitmap from a file.

If aShareIfLoaded is ETrue the bitmap will be allowed to be shared by a number 

of font and bitmap server clients.

This function, if successful, always causes a flush of the window server buffer.

@param aFileName The filename of the multibitmap (.mbm) file containing the 

bitmap to be loaded. 

@param aId The identifier of the bitmap in the .mbm file which should be loaded.

@param aShareIfLoaded Specifies whether or not the loaded bitmap will be made 

available for sharing between font and bitmap server clients. 

@return KErrNone if successful, otherwise KErrCouldNotConnect, KErrEof, or 

an error specific to the font and bitmap server.

@see CFbsBitmap::Load() */

	{

	Reset();

	return(createWsBitmap(CFbsBitmap::Load(aFileName,aId,aShareIfLoaded)));

	}

EXPORT_C void CWsBitmap::InternalizeL(RReadStream& aStream)

/** Internalises a CWsBitmap from the read stream.

The presence of this function means that the standard templated operator>>() 

can be used to internalise objects of this class.

This function always causes a flush of the window server buffer.

@param aStream The stream from which to internalise the bitmap. */

	{

	Reset();

	CFbsBitmap::InternalizeL(aStream);

	User::LeaveIfError(createWsBitmap(KErrNone));

	}