graphicsdeviceinterface/directgdiadaptation/swsrc/swdirectgdiimagesourceimpl.cpp
author jakl.martin@cell-telecom.com
Mon, 06 Dec 2010 18:07:30 +0100
branchNewGraphicsArchitecture
changeset 218 99b3451c560e
parent 0 5d03bc08d59c
permissions -rw-r--r--
Fix for Bug 3890
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
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// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include "swdirectgdiimagesourceimpl.h"
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#include "swdirectgdidriverimpl.h"
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#include <graphics/sgimage_sw.h>
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/**
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Constructs a CSwDirectGdiImageTargetImpl
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@param	aDriver		The driver implementation which created this target.
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*/
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CSwDirectGdiImageSourceImpl::CSwDirectGdiImageSourceImpl(CSwDirectGdiDriverImpl& aDriver) :
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	iDriver(aDriver)
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	{	
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	}
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/**
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Destroys a CSwDirectGdiImageSourceImpl.
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@post This image source is removed from the associated driver's list of source images.
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*/
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CSwDirectGdiImageSourceImpl::~CSwDirectGdiImageSourceImpl()
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	{
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	iDriver.UnregisterSourceImage(*this);
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	}
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/**
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Two-phase construction of a CDirectGdiImageSourceImpl object.
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@param aImage On success, holds a pointer to the newly-created image.
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@param aDriver The driver to register this image with.
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@param aSgImage The RSgImage which this image will be based upon. 
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@return KErrNone if successful, KErrNoMemory if not enough memory could be allocated, otherwise a return
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        value from Construct().
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*/
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TInt CSwDirectGdiImageSourceImpl::New(CSwDirectGdiImageSourceImpl*& aImage, CSwDirectGdiDriverImpl& aDriver, const RSgImage& aSgImage)
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	{
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	CSwDirectGdiImageSourceImpl* image = new CSwDirectGdiImageSourceImpl(aDriver);
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	if (!image)
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		return KErrNoMemory;
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	TInt err = image->Construct(aSgImage);
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	if (err == KErrNone)
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		aImage = image;
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	else
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		delete image;
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	return err;
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	}
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/**
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Gets the supplied image structure and sets the internal data.
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@param aSgImage The RSgImage to create the source image from.
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@return KErrNone if successful, KErrNotSupported if the RSgImage doesn't have the required interface,
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        otherwise an error from CDirectGdiImageRef::Construct().
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*/ 
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TInt CSwDirectGdiImageSourceImpl::Construct(const RSgImage& aSgImage)
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	{	
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	TInt err = CDirectGdiImageRef::Construct(aSgImage);
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	MSgImage_Sw* pImage = NULL;
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	if (err == KErrNone)
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		{		
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		RSgImage image = Image();
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		err = image.GetInterface(pImage);
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		}
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	if (err == KErrNone)
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		{
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		err = iDriver.RegisterSourceImage(*this);
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		}
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	if (err == KErrNone)
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		{
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		iDataBuffer = pImage->DataAddress();
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		iStride = pImage->DataStride();
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		Open();
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		}
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	return err;	
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	}