diff -r 000000000000 -r bde4ae8d615e os/graphics/graphicsdeviceinterface/directgdiadaptation/cmnsrc/directgdidrawableref.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/graphics/graphicsdeviceinterface/directgdiadaptation/cmnsrc/directgdidrawableref.cpp Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,54 @@ +// 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 "directgdidrawableref.h" + + +/** +Destructor. Checks that the reference count is zero to make sure all references to this object have +been closed properly before it is destroyed. + +@panic DGDIAdapter 44, if the reference count is not zero. The +driver that created this object is responsible for decrementing the reference count. + */ +CDirectGdiDrawableRef::~CDirectGdiDrawableRef() + { + GRAPHICS_ASSERT_DEBUG(iRefCount == 0, EDirectGdiPanicDrawableRefDestructorError); + } + +/** +Increments the reference count for this object. +*/ +void CDirectGdiDrawableRef::Open() + { + ++iRefCount; + } + +/** +Decrements the reference count for this object. When the count reaches zero, it deletes itself. +Therefore no operations should be called on an object of this type after calling DecRefCount(). + +@return The decremented open count. + +@panic DGDIAdapter 30, when attempting to decrement a reference count that is zero or less. + */ +void CDirectGdiDrawableRef::Close() + { + GRAPHICS_ASSERT_DEBUG(iRefCount > 0, EDirectGdiPanicDrawableRefCountError); + if (--iRefCount == 0) + { + delete this; + } + }