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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 "directgdidriver.h"
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#include <graphics/directgdiimagetarget.h>
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#include "directgdipaniccodes.h"
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/**
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Default constructor.
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Only for embedding instances of RDirectGdiImageTarget into other classes as data members.
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Before a RDirectGdiImageTarget can be used the other constructor must be called.
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*/
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EXPORT_C RDirectGdiImageTarget::RDirectGdiImageTarget()
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: iDriver(NULL), iHandle(KNullHandle)
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{
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}
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/**
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Constructor.
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@param aDriver The CDirectGdiDriver for this thread.
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@pre CDirectGdiDriver object has been initialised from the calling thread.
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@post This handle class has a pointer to the CDirectGdiDriver object for this
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thread, and is not associated with any DirectGDI adaptation specific resource.
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*/
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EXPORT_C RDirectGdiImageTarget::RDirectGdiImageTarget(CDirectGdiDriver& aDriver)
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: iDriver(&aDriver), iHandle(KNullHandle)
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{
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}
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/**
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Creates a DirectGDI adaptation-specific resource from the given image resource
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so it can be used as a target of DirectGDI rendering.
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@param aImage The image resource.
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@pre The CDirectGdiDriver object has been set. The image resource has been
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fully constructed and created with the correct usage that allows it to
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be used as a DirectGDI target.
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@post The DirectGDI adaptation-specific resource that is bound to the given
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image resource is created and this handle is now associated with it.
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The reference counter on the image resource is incremented.
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@return KErrNone if successful, KErrArgument if the image resource is not valid,
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KErrAlreadyExists if this handle is already associated with a DirectGDI
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specific resource, KErrNotSupported if the image resource is not created
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with the correct usage, otherwise one of the system-wide error codes.
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*/
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EXPORT_C TInt RDirectGdiImageTarget::Create(const RSgImage& aImage)
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{
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GRAPHICS_ASSERT_ALWAYS(iDriver, EDirectGdiPanicImageTargetWithoutDriver);
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return iDriver->CreateImageTarget(*this, aImage);
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}
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/**
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Destroys the DirectGDI adaptation-specific resource associated with this handle.
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Calling this method on a handle that is not associated with any DirectGDI
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adaptation-specific resource will do nothing. Once Close() is called, this handle can be reused.
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@pre The CDirectGdiDriver object for this handle has been set.
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@post The DirectGDI specific resource associated with this handle will be destroyed
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(at any time preferred by the adaptation). This handle is no longer associated
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with a DirectGDI specific resource. The reference counter of the underlying
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image resource is decremented.
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*/
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EXPORT_C void RDirectGdiImageTarget::Close()
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{
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if (iHandle != KNullHandle)
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{
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GRAPHICS_ASSERT_ALWAYS(iDriver, EDirectGdiPanicImageTargetWithoutDriver);
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iDriver->CloseImageTarget(*this);
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}
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}
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