epoc32/include/app/hlpzoom.h
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:27:01 +0100
branchSymbian2
changeset 3 e1b950c65cb4
parent 2 epoc32/include/hlpzoom.h@2fe1408b6811
child 4 837f303aceeb
permissions -rw-r--r--
Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations
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// Copyright (c) 2000-2009 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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
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// which accompanies this distribution, and is available
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// at the URL "http://www.symbianfoundation.org/legal/licencesv10.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 __HLPZOOM_H__
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#define __HLPZOOM_H__
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// System includes
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#include <e32std.h>
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// Classes referenced
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class MGraphicsDeviceMap;
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///////////////////////////////////////////////////////////////////////////////////////
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// ----> MHlpZoomStateManager (header)
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///////////////////////////////////////////////////////////////////////////////////////
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class MHlpZoomStateManager
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/**
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@internalComponent
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@released
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*/
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	{
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public: // Zoom state
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	enum THlpZoomState
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		{
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		EHlpZoomStateSmall = -1,
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		EHlpZoomStateNormal = 0,
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		EHlpZoomStateLarge = 1
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		};
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public: // From MHlpZoomStateManager
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	virtual void SetZoomState(THlpZoomState aState) = 0;
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	virtual THlpZoomState ZoomState() const = 0;
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public: // From MHlpZoomStateManager
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	virtual MGraphicsDeviceMap& ZoomDeviceMap() const = 0;
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	virtual TInt ZoomFactorValueForZoomState(THlpZoomState aState) const = 0;
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	};
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///////////////////////////////////////////////////////////////////////////////////////
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// ----> MHlpZoomStateObserver (header)
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///////////////////////////////////////////////////////////////////////////////////////
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class MHlpZoomStateObserver
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/**
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@internalComponent
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@released
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*/
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	{
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public: // From MHlpZoomStateObserver
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	virtual void HandleZoomStateChangedL(MHlpZoomStateManager::THlpZoomState aZoomState) = 0;
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	};
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///////////////////////////////////////////////////////////////////////////////////////
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// ----> MHlpZoomStateChangeNotifier (header)
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///////////////////////////////////////////////////////////////////////////////////////
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class MHlpZoomStateChangeNotifier : public MHlpZoomStateManager
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/**
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@internalComponent
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@released
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*/
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	{
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public: // From MHlpZoomStateChangeNotifier
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	virtual void RegisterForZoomStateChangeNotificationsL(MHlpZoomStateObserver& aObserver) = 0;
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	virtual void RegisterForZoomStateChangeNotificationsCancel(MHlpZoomStateObserver& aObserver) = 0;
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	};
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#endif