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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 "directgdipaniccodes.h"
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#include <graphics/directgdidrawablesource.h>
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#include <graphics/sgimage.h>
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/**
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Default constructor.
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Only for embedding instances of RDirectGdiDrawableSource into other classes as data members.
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Before a RDirectGdiDrawableSource can be used the other constructor must be called.
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*/
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EXPORT_C RDirectGdiDrawableSource::RDirectGdiDrawableSource()
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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 The CDirectGdiDriver object has been initialised from the calling thread.
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@post This handle has a pointer to the CDirectGdiDriver for this thread.
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This handle is not associated with any DirectGDI adaptation-specific resource.
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*/
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EXPORT_C RDirectGdiDrawableSource::RDirectGdiDrawableSource(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 that is bound to the specified
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drawable resource so it can be drawn using the DirectGDI rendering API.
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@param aDrawable The drawable resource.
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@pre CDirectGdiDriver object for this handle has been set. The drawable
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resource has been fully constructed.
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@post The DirectGDI adaptation-specific resource that is bound to the given
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non-pixel resource is created and this handle is now associated with it.
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The reference counter on the drawable resource is incremented.
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@return KErrNone if successful, KErrArgument if the drawable resource is not
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valid, KErrAlreadyExists if this handle is already associated with a
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DirectGDI adaptation-specific resource, otherwise one of the system-wide
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error codes.
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@panic DGDI 18, if this drawable source has no pointer to its assosicated CDirectGdiDriver.
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This may occur if constructed using the default constructor, and has not yet been
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assigned to another drawable source created with the constructor overload.
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*/
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EXPORT_C TInt RDirectGdiDrawableSource::Create(const RSgDrawable& aDrawable)
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{
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GRAPHICS_ASSERT_ALWAYS(iDriver, EDirectGdiPanicDrawableSourceWithoutDriver);
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return iDriver->CreateDrawableSource(*this, aDrawable);
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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. This handle is no longer associated with a DirectGDI specific
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resource. The reference counter of the underlying drawable resource is
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decremented.
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@panic DGDI 18, if this drawable source has no pointer to its assosicated CDirectGdiDriver.
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This may occur if constructed using the default constructor, and has not yet been
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assigned to another drawable source created with the constructor overload.
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*/
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EXPORT_C void RDirectGdiDrawableSource::Close()
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{
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if (iHandle != KNullHandle)
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{
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GRAPHICS_ASSERT_ALWAYS(iDriver, EDirectGdiPanicDrawableSourceWithoutDriver);
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iDriver->CloseDrawableSource(*this);
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}
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}
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