// 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:

//

#include "swdirectgdiimagesourceimpl.h"

#include "swdirectgdidriverimpl.h"

#include <graphics/sgimage_sw.h>

/**

Constructs a CSwDirectGdiImageTargetImpl

@param	aDriver		The driver implementation which created this target.

*/

CSwDirectGdiImageSourceImpl::CSwDirectGdiImageSourceImpl(CSwDirectGdiDriverImpl& aDriver) :

	iDriver(aDriver)

	{	

	}

/**

Destroys a CSwDirectGdiImageSourceImpl.

@post This image source is removed from the associated driver's list of source images.

*/

CSwDirectGdiImageSourceImpl::~CSwDirectGdiImageSourceImpl()

	{

	iDriver.UnregisterSourceImage(*this);

	}

/**

Two-phase construction of a CDirectGdiImageSourceImpl object.

@param aImage On success, holds a pointer to the newly-created image.

@param aDriver The driver to register this image with.

@param aSgImage The RSgImage which this image will be based upon. 

@return KErrNone if successful, KErrNoMemory if not enough memory could be allocated, otherwise a return

        value from Construct().

*/

TInt CSwDirectGdiImageSourceImpl::New(CSwDirectGdiImageSourceImpl*& aImage, CSwDirectGdiDriverImpl& aDriver, const RSgImage& aSgImage)

	{

	CSwDirectGdiImageSourceImpl* image = new CSwDirectGdiImageSourceImpl(aDriver);

	if (!image)

		return KErrNoMemory;

	TInt err = image->Construct(aSgImage);

	if (err == KErrNone)

		aImage = image;

	else

		delete image;

	return err;

	}

/**

Gets the supplied image structure and sets the internal data.

@param aSgImage The RSgImage to create the source image from.

@return KErrNone if successful, KErrNotSupported if the RSgImage doesn't have the required interface,

        otherwise an error from CDirectGdiImageRef::Construct().

*/ 

TInt CSwDirectGdiImageSourceImpl::Construct(const RSgImage& aSgImage)

	{	

	TInt err = CDirectGdiImageRef::Construct(aSgImage);

	MSgImage_Sw* pImage = NULL;

	if (err == KErrNone)

		{		

		RSgImage image = Image();

		err = image.GetInterface(pImage);

		}

	if (err == KErrNone)

		{

		err = iDriver.RegisterSourceImage(*this);

		}

	if (err == KErrNone)

		{

		iDataBuffer = pImage->DataAddress();

		iStride = pImage->DataStride();

		Open();

		}

	return err;	

	}