graphicsdeviceinterface/screendriver/inc/BitDrawOrigin.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:47:50 +0200
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// Copyright (c) 2004-2009 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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#ifndef __BITDRAWORIGIN_H__
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#define __BITDRAWORIGIN_H__
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/**
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MDrawDeviceOrigin interface manages the origin point of CFbsDrawDevice interface.
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The interface could be retrieved calling CFbsDrawDevice::GetInterface() with 
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KDrawDeviceOriginInterfaceID as an argument.
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If the drawing device does not have support for moving origin, MDrawDeviceOrigin cannot be retrieved.
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MDrawDeviceOrigin interface lifetime is the same as the lifetime of CFbsDrawDevice
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interface, which creates it. 
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Do not try to delete MDrawDeviceOrigin interface pointer!
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MDrawDeviceOrigin interface offers following methods: 
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Get(), Set().
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@see CFbsDrawDevice
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@internalTechnology
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*/
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class MDrawDeviceOrigin
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	{
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public:
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	/**
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	Sets the origin of the drawing device. By default drawing device origin is (0,0).
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	If you want to set the default origin, call Set() with (0,0) point coordinates.
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	@param aOrigin Specifies physical coordinates of the new origin
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	of the drawing device. The drawing device maps the logical point (0,0) to
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	the "aOrigin" physical point .
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	@return KErrNone success.
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	@internalTechnology
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	*/
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	virtual TInt Set(const TPoint& aOrigin) = 0;
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	/**
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	Retrieves origin point.
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	@param aOrigin Upon return contains origin point.
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	@internalTechnology
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	*/
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	virtual void Get(TPoint& aOrigin) = 0;
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	};
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#endif//__BITDRAWORIGIN_H__