graphicsdeviceinterface/directgdiadaptation/swsrc/swdirectgdiimagetargetimpl.cpp
changeset 0 5d03bc08d59c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsdeviceinterface/directgdiadaptation/swsrc/swdirectgdiimagetargetimpl.cpp	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,103 @@
+// 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 "swdirectgdiimagetargetimpl.h"
+#include "swdirectgdidriverimpl.h"
+#include <bitdraw.h>
+
+/**
+Constructs a CSwDirectGdiImageTargetImpl.
+@param	aDriver		The driver implementation which created this target.
+@param	aDrawDevice A pointer to the draw device associated with this target. 
+				   This class takes ownership of aDrawDevice.
+*/
+CSwDirectGdiImageTargetImpl::CSwDirectGdiImageTargetImpl(CSwDirectGdiDriverImpl& aDriver, CFbsDrawDevice* aDrawDevice):
+	iDriver(aDriver),
+	iDrawDevice(aDrawDevice)	
+	{	
+	}
+
+/**
+Destroys a CSwDirectGdiImageTargetImpl.
+@post This image target is removed from the associated driver's list of target images.
+*/
+CSwDirectGdiImageTargetImpl::~CSwDirectGdiImageTargetImpl()
+	{
+	iDriver.UnregisterTargetImage(*this);
+	delete iDrawDevice;
+	}
+
+/**
+Two-phase construction of a CSwDirectGdiImageTarget object.
+
+@param aImage On success, holds a pointer to the newly-created image.
+@param aDriver The driver to register this image with.
+@param aDrawDevice The draw device to associate with this target. This target will take ownership
+of the draw device if this method returns without an error, if the method returns with an error
+then the caller still owns the draw device.
+@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 CSwDirectGdiImageTargetImpl::New(CSwDirectGdiImageTargetImpl*& aImage, CSwDirectGdiDriverImpl& aDriver, CFbsDrawDevice* aDrawDevice, const RSgImage& aSgImage)
+	{
+	CSwDirectGdiImageTargetImpl* image = new CSwDirectGdiImageTargetImpl(aDriver, aDrawDevice);
+	if (!image)
+		return KErrNoMemory;
+	TInt err = image->Construct(aSgImage);
+	if (err == KErrNone)
+		aImage = image;
+	else
+		{
+		image->iDrawDevice = NULL;
+		delete image;
+		}
+	return err;
+	}
+
+/**
+Obtains a draw device pointer that is associated with this target
+@return A pointer to the draw device.
+*/
+CFbsDrawDevice* CSwDirectGdiImageTargetImpl::DrawDevice() const
+	{
+	return iDrawDevice;
+	}
+
+/**
+Gets the supplied image structure and sets the internal data. If it fails for any reason, it will
+delete itself.
+
+@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 CSwDirectGdiImageTargetImpl::Construct(const RSgImage& aSgImage)
+	{	
+	TInt err = CDirectGdiImageRef::Construct(aSgImage);
+	
+	if (err == KErrNone)
+		{		
+		err = iDriver.RegisterTargetImage(*this);
+		}
+	
+	if (err == KErrNone)
+		{
+		Open();
+		}
+	
+	return err;	
+	}