1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/graphics/graphicsdeviceinterface/directgdiadaptation/cmnsrc/directgdidrawableref.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,54 @@
     1.4 +// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#include "directgdidrawableref.h"
    1.20 +
    1.21 +
    1.22 +/**
    1.23 +Destructor. Checks that the reference count is zero to make sure all references to this object have
    1.24 +been closed properly before it is destroyed.
    1.25 +
    1.26 +@panic DGDIAdapter 44, if the reference count is not zero. The
    1.27 +driver that created this object is responsible for decrementing the reference count.
    1.28 + */
    1.29 +CDirectGdiDrawableRef::~CDirectGdiDrawableRef()
    1.30 +	{
    1.31 +	GRAPHICS_ASSERT_DEBUG(iRefCount == 0, EDirectGdiPanicDrawableRefDestructorError);
    1.32 +	}
    1.33 +
    1.34 +/**
    1.35 +Increments the reference count for this object.
    1.36 +*/
    1.37 +void CDirectGdiDrawableRef::Open()
    1.38 +	{
    1.39 +	++iRefCount;
    1.40 +	}
    1.41 +
    1.42 +/**
    1.43 +Decrements the reference count for this object. When the count reaches zero, it deletes itself.
    1.44 +Therefore no operations should be called on an object of this type after calling DecRefCount().
    1.45 +
    1.46 +@return The decremented open count.
    1.47 +
    1.48 +@panic DGDIAdapter 30, when attempting to decrement a reference count that is zero or less.
    1.49 + */
    1.50 +void CDirectGdiDrawableRef::Close()
    1.51 +	{
    1.52 +	GRAPHICS_ASSERT_DEBUG(iRefCount > 0, EDirectGdiPanicDrawableRefCountError);
    1.53 +	if (--iRefCount == 0)
    1.54 +		{
    1.55 +		delete this;
    1.56 +		}
    1.57 +	}