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// Copyright (c) 2006-2009 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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// surface
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//
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//
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/**
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@file
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@publishedPartner
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@released
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*/
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#ifndef __SURFACE_H__
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#define __SURFACE_H__
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#include <e32def.h>
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class TSurfaceId
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{
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public:
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enum
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{
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EInvalidSurface = 0,
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EScreenSurface = 1,
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EStreamHandle = 2,
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EAdaptationSurfaceBase = 33,
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};
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struct TSurfaceUsage //TSurfaceId::TSurfaceUsage::
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{
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enum
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{
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//screen usage
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EScreenField=0,
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EHalField=1,
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EHalFlippedFlag=0x80000000,
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ETypeGuidField=2,
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//stream handle usage
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EObjectRefField=0,
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//general class usage
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ETypeClassField=3,
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ETypeClassShift=24
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};
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};
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typedef TSurfaceUsage TScreenSurfaceUsage; //Backward compatibility
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inline static TSurfaceId CreateNullId(void)
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{
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TSurfaceId id = TSurfaceId();
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for (TInt i = 0; i < 4; ++i) id.iInternal[i] = 0;
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return id;
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};
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inline TBool IsNull() const
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{
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return ((iInternal[0] == 0) &&
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(iInternal[1] == 0) &&
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(iInternal[2] == 0) &&
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(iInternal[3] == 0));
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};
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inline TInt Type() const {return (TInt)(iInternal[3] >> 24);}
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public:
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TUint32 iInternal[4];
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};
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inline bool operator == (const TSurfaceId& lhs, const TSurfaceId& rhs)
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{
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return ((lhs.iInternal[0] == rhs.iInternal[0]) &&
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(lhs.iInternal[1] == rhs.iInternal[1]) &&
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(lhs.iInternal[2] == rhs.iInternal[2]) &&
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(lhs.iInternal[3] == rhs.iInternal[3]));
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}
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inline bool operator != (const TSurfaceId& lhs, const TSurfaceId& rhs)
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{
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return !(lhs == rhs);
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}
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#endif
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