sl@0: // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "directgdiadapter.h"
sl@0: #include "directgdiimagesourceimpl.h"
sl@0: #include "directgdidriverimpl.h"
sl@0: #include "directgdidriverprocessstate.h"
sl@0: #include <graphics/sgimage.h>
sl@0: 
sl@0: /**
sl@0: Constructs a CDirectGdiImageSourceImpl.
sl@0: @param	aDriver		The driver implementation which created this target.
sl@0: */
sl@0: CDirectGdiImageSourceImpl::CDirectGdiImageSourceImpl(CDirectGdiDriverImpl& aDriver) :
sl@0: 	iDriver(aDriver),
sl@0: 	iVgImage(VG_INVALID_HANDLE)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Destructor. 
sl@0: 
sl@0: @post The associated VgImage (if any) is destroyed by the process state.
sl@0: 	  This image is removed from the associated driver's list of source images.
sl@0: */
sl@0: CDirectGdiImageSourceImpl::~CDirectGdiImageSourceImpl()
sl@0: {	
sl@0: 	GRAPHICS_LOG_DEBUG("Destroying CDirectGdiImageSourceImpl");
sl@0: 	if (iVgImage != VG_INVALID_HANDLE)
sl@0: 		{
sl@0: 		iDriver.ProcessState().DestroyVgImage(iDriver.EglDisplay(), iVgImage);
sl@0: 		}
sl@0: 	iDriver.UnregisterSourceImage(*this);		
sl@0: }
sl@0: 
sl@0: /**
sl@0: Two-phase construction of a CDirectGdiImageSourceImpl object.
sl@0: @param aImage On success, holds a pointer to the newly-created image.
sl@0: @param aDriver The driver to register this image with.
sl@0: @param aSgImage The RSgImage which this image will be based upon.
sl@0: @return KErrNone if successful, KErrNoMemory if not enough memory could be allocated, otherwise a return
sl@0:         value from Construct().
sl@0: */
sl@0: TInt CDirectGdiImageSourceImpl::New(CDirectGdiImageSourceImpl*& aImage, CDirectGdiDriverImpl& aDriver, const RSgImage& aSgImage)
sl@0: 	{
sl@0: 	CDirectGdiImageSourceImpl* image = new CDirectGdiImageSourceImpl(aDriver);
sl@0: 	if (!image)
sl@0: 		return KErrNoMemory;
sl@0: 	TInt err = image->Construct(aSgImage);
sl@0: 	if (err == KErrNone)
sl@0: 		aImage = image;
sl@0: 	else
sl@0: 		delete image;
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Gets the supplied image structure and sets the internal data.
sl@0: Registers itself with the driver.
sl@0:  
sl@0: @param aSgImage The RSgImage to create the source image from.
sl@0: @return KErrNone if successful, otherwise an error from CDirectGdiImageRef::Construct().
sl@0: */
sl@0: TInt CDirectGdiImageSourceImpl::Construct(const RSgImage& aSgImage)
sl@0: 	{
sl@0: 	TInt err = CDirectGdiImageRef::Construct(aSgImage);
sl@0: 	
sl@0: 	if (err == KErrNone)
sl@0: 		{
sl@0: 		// Let the process state create the VGImage as EGLImages and their associated VGImages
sl@0: 		// are shared across all threads in this process. (Only one EGLImage can be created per RSgImage
sl@0: 		// in a process).
sl@0: 		err = iDriver.ProcessState().CreateVgImage(iDriver.EglDisplay(), iVgImage, iSgImage);
sl@0: 		}
sl@0: 	
sl@0: 	if (err == KErrNone)
sl@0: 		{
sl@0: 		err = iDriver.RegisterSourceImage(*this);				
sl@0: 		}
sl@0: 	
sl@0: 	if (err == KErrNone)
sl@0: 		{
sl@0: 		Open();
sl@0: 		}	
sl@0: 	
sl@0: 	return err;
sl@0: 	}
sl@0: