--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/windowing/windowserver/inc/graphics/wsdisplaypolicy.h	Tue Jul 20 13:27:44 2010 +0300
@@ -0,0 +1,89 @@
+// Copyright (c) 2008-2009 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:
+// Interface for Render Stage Display Policy
+// 
+//
+
+#ifndef WSDISPLAYPOLICY_H_
+#define WSDISPLAYPOLICY_H_
+
+/**
+@file
+@publishedpartner 
+@released
+*/
+
+#include <graphics/displayconfiguration.h>
+#include <graphics/wsgraphicdrawerinterface.h>
+
+class MWsDisplayPolicy: public MWsObjectProvider
+	{
+public:
+	enum	
+		{
+		KUidWsDisplayPolicy	 =  0x102869FA, 	 
+		ETypeId=				KUidWsDisplayPolicy,
+		EWsObjectInterfaceId=	KUidWsDisplayPolicy
+		};
+	
+	enum TDisplayStatus
+		{
+		EDetach = 0,
+		EAttach,
+		EConnecting,
+		};
+public:
+	/**
+	 * Notification from the Window Server that the application size mode list has been updated.
+	 */
+	virtual void NewAppModesAvailable()=0;
+	/**
+	 * Determine the display configuration and application rendering extent to use for a given screen size mode.
+	 * 
+	 * The Window Server uses this function when a request to change to a new screen size mode or new display 
+	 * configuration is made by a client. The display configuration passed in may be partially filled, and the 
+	 * combination of the defined entries in it and the requested screen size mode values shall be used to define 
+	 * the rest of the configuration and new application extent to be used.
+	 * 
+	 * Only undefined entries in the configuration may be set by this function. Entries already defined must retain 
+	 * the same values. If the combination of defined entries and size mode values is not acceptable to the implementer, 
+	 * the function shall return KErrArgument.
+	 * 
+	 * If the function returns KErrNone, the Window Server shall set the returned display configuration, notify render 
+	 * stages of the new application extent and change to use the screen size mode. If either this function returns 
+	 * EFalse or the call to set the display configuration fails for any reason (such as KErrNoMemory, for example), 
+	 * then no further changes are made.
+	 * 
+	 * @see MWsScreenConfigList
+	 * @see MWsDisplayMapping
+	 * 
+	 * @param aScreenSizeMode The requested screen size mode. If static, the size in pixels, size in twips, and 
+	 * the rotation must be respected. If dynamic, only the rotation must be respected.
+	 * @param aConfig The requested display configuration on input, the required configuration on return. Only 
+	 * undefined entries may be set.
+	 * @param aExtent The screen size mode offset and size on input, the required application offset and size on return. 
+	 * If the screen driver buffer is used as the UI surface, this must be left unchanged.
+	 * @return KErrNone if no error, otherwise a system wide error code
+	 */
+	virtual TInt GetSizeModeConfiguration(TInt aScreenSizeMode, TDisplayConfiguration& aConfig, TRect& aSizeModePosition) const =0;
+	virtual TInt SuitableAppMode(TDisplayStatus aSituation)=0;
+	/**
+	 * Sets the application mode resumed to after a display is connected again after a disconnect.
+	 * 
+	 * @param aMode The application mode.
+	 */
+	virtual void SetLastAppMode(TInt aMode)=0;
+	};
+
+#endif /*WSDISPLAYPOLICY_H_*/