// 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 "directgdiadapter.h"

 #include "directgdiimagesourceimpl.h"

 #include "directgdidriverimpl.h"

 #include "directgdidriverprocessstate.h"

 #include <graphics/sgimage.h>

 /**

 Constructs a CDirectGdiImageSourceImpl.

 @param	aDriver		The driver implementation which created this target.

 */

 CDirectGdiImageSourceImpl::CDirectGdiImageSourceImpl(CDirectGdiDriverImpl& aDriver) :

 	iDriver(aDriver),

 	iVgImage(VG_INVALID_HANDLE)

 	{

 	}

 /**

 Destructor. 

 @post The associated VgImage (if any) is destroyed by the process state.

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

 */

 CDirectGdiImageSourceImpl::~CDirectGdiImageSourceImpl()

 {	

 	GRAPHICS_LOG_DEBUG("Destroying CDirectGdiImageSourceImpl");

 	if (iVgImage != VG_INVALID_HANDLE)

 		{

 		iDriver.ProcessState().DestroyVgImage(iDriver.EglDisplay(), iVgImage);

 		}

 	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 CDirectGdiImageSourceImpl::New(CDirectGdiImageSourceImpl*& aImage, CDirectGdiDriverImpl& aDriver, const RSgImage& aSgImage)

 	{

 	CDirectGdiImageSourceImpl* image = new CDirectGdiImageSourceImpl(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.

 Registers itself with the driver.

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

 @return KErrNone if successful, otherwise an error from CDirectGdiImageRef::Construct().

 */

 TInt CDirectGdiImageSourceImpl::Construct(const RSgImage& aSgImage)

 	{

 	TInt err = CDirectGdiImageRef::Construct(aSgImage);

 	if (err == KErrNone)

 		{

 		// Let the process state create the VGImage as EGLImages and their associated VGImages

 		// are shared across all threads in this process. (Only one EGLImage can be created per RSgImage

 		// in a process).

 		err = iDriver.ProcessState().CreateVgImage(iDriver.EglDisplay(), iVgImage, iSgImage);

 		}

 	if (err == KErrNone)

 		{

 		err = iDriver.RegisterSourceImage(*this);				

 		}

 	if (err == KErrNone)

 		{

 		Open();

 		}	

 	return err;

 	}