--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/windowing/windowserverplugins/openwfc/inc/displaypolicy.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,170 @@
+// 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:
+//
+
+#ifndef CDISPLAYPOLICY_H
+#define CDISPLAYPOLICY_H
+
+// INCLUDES
+#include <e32std.h>
+#include <e32base.h>
+#include <graphics/displaycontrolbase.h>
+#include <graphics/displaymapping.h>
+#include <graphics/displayconfiguration.h>
+#include <graphics/wsdisplaypolicy.h>
+// CLASS DECLARATION
+enum TCoordinateSpace;
+class MWsGraphicDrawerEnvironment;
+class MWsScreen;
+class MWsScreenConfigList;
+class MWsIniFile;
+/**
+ *  CDisplayPolicy
+ * 
+ */
+class CDisplayPolicy : public CBase
+	{
+public:
+	enum	TUiScaling
+		{
+		ENone=			0,
+		EInteger=		1,
+		EIsotropic=		2,
+		EAnisotropic=	3		
+		};
+	// Constructors and destructor
+
+	/**
+	 * Destructor.
+	 */
+	~CDisplayPolicy();
+
+	/**
+	 * Two-phased constructor.
+	 */
+	static CDisplayPolicy* NewL(MWsGraphicDrawerEnvironment* aEnv,MWsScreen* aScreen,TInt aScreenNumber);
+
+	/**
+	 * Two-phased constructor.
+	 */
+	static CDisplayPolicy* NewLC(MWsGraphicDrawerEnvironment* aEnv,MWsScreen* aScreen,TInt aScreenNumber);
+
+	void NewAppModesAvailable();
+	void GetAppModeList();
+	TInt MapCoordinates(TCoordinateSpace aSourceSpace, const TRect& aSource, 
+			TCoordinateSpace aTargetSpace, TRect& aTarget) const;
+	void AddVirtualResolutionCount(TInt& aDisplayCount) const; 
+	TInt AddVirtualResolutions(RArray<MDisplayControlBase::TResolution>& aResolutions) const;
+	MDisplayControlBase::TResolution AppModeToResolution(RArray<MDisplayControlBase::TResolution>& aResolutions,TInt appMode)const;
+	TInt GetSizeModeConfiguration(RArray<MDisplayControlBase::TResolution>& aResolutions,TInt aScreenSizeMode, 
+			TDisplayConfiguration& aConfig, TRect& aSizeModePosition) const;
+	
+	/*
+	 * Used when display is disconnected.
+	 */
+	TInt GetSizeModeConfiguration(TInt aScreenSizeMode,TDisplayConfiguration& aConfig, TRect& aSizeModePosition);
+	TBool SettingConfiguration(const RArray<MDisplayControlBase::TResolution>& aResolutions,
+			TDisplayConfiguration& aConfig)const;
+	TBool PolicyEnabled()const{return (iUiScaling==ENone)?EFalse:ETrue;}
+	
+	void SetCompositionInfo (const TDisplayConfiguration& aCompositionConfig,const TDisplayConfiguration& aUiConfig);
+	void SetSizeModeExtent(TRect& aExtent, TBitFlags32 /*aContext*/);
+	void	AdjustStageBufferSize(const TSize& aOldSize,TSize& aNewSize);
+	void	CalculateMinBufferSize(RArray<MDisplayControlBase::TResolution>& aResolutions, TInt aConnectionStatus);
+	TInt 	SuitableAppMode(MWsDisplayPolicy::TDisplayStatus aSituation);
+	void 	SetLastAppMode(TInt aMode);
+	
+	TSize	GetUiResolution();
+	TSize   GetUiResolutionAsTwips() const;
+	TRect 	GetPolicyAppMode();
+
+private:
+
+	class TAppMode
+		{
+	public:
+		TRect	iPixels;	//<Size and pisition in pixels
+		TSize	iTwips;		//<Size in TWips
+		TInt	iFlags;		//<Flags
+		enum	THighFlags	//<Policy flags are per app mode. Lower bits are defined by MWsScreenConfigList::TModeFlags 
+			{		//Currently none
+			};
+		
+		//The app modes are presented based on Normal rotation to calculate correctly with display resolutions
+		//which are always in normal rotation
+		TInt	iOrientations;	//<Index bits via CFbsBitGc::TGraphicsOrientation
+		TInt	iModeIndex;	//<Which screen mode index it refers to
+		
+		};
+	/**
+	 * Constructor for performing 1st stage construction
+	 */
+	CDisplayPolicy();
+
+	/**
+	 * EPOC default constructor for performing 2nd stage construction
+	 */
+	void ConstructL(MWsGraphicDrawerEnvironment* aEnv,MWsScreen* aScreen,TInt aScreenNumber);
+	TBool FindVirtualMode(const RArray<MDisplayControlBase::TResolution>& aResolutions,
+			const CDisplayPolicy::TAppMode& aAppMode,TSize& aFullAppModeSize,TInt& aIndex,TInt& aBestScale) const;
+	
+	TSize ResolutionSize(RArray<MDisplayControlBase::TResolution>& aResolutions, const TSize aBestAppSize,
+			TInt aIndex, TInt aScale) const;
+	TSize ResolutionSizeFromTwips(RArray<MDisplayControlBase::TResolution>& aResolutions, TInt aAppMode,const TSize& aBestAppSize, 
+			TInt aIndex,TBool aSwapAxis) const;
+	TSize ResolutionSizeFromAssumedTwips(RArray<MDisplayControlBase::TResolution>& aResolutions,const TSize& aBestAppSize,
+			TInt aIndex,TBool aSwapAxis,TInt aScale) const;
+	
+	TBool MatchConfigToResolutions(const RArray<MDisplayControlBase::TResolution>& aResolutions,
+			const TDisplayConfiguration& aConfig, TInt aStartIndex, TInt& aResolutionIndex)const;
+	TBool SetConfigToResolution(TInt aAppMode, MDisplayControlBase::TResolution aResolution, TDisplayConfiguration& aConfig)const;
+	void CenteredAppInUi(const TSize& aUiSize,const TRect& aAppExtent,TRect& aSizeModePosition) const;
+	TInt MapCompositionToUi(const TRect& aSource, TRect& aTarget, TBool aIsReverseMapping) const;
+	void MapUiToApplication(const TRect& aSource, TRect& aTarget, TBool aIsReverseMapping) const;
+	TInt MapUiToDSA(const TRect& aSource, TRect& aTarget, TBool aIsReverseMapping) const;
+	void GetModeInfoL(const MWsScreenConfigList& aList,TInt aIndex,TPoint& aOffset,TSize& aSize,TAppMode& aMode) const;
+	TInt MinSizedModeIndex();
+	/** Used when calculating how to map app mode to hardware resolutions
+		Rounds up when .5
+	*/
+	class TFraction
+		{
+	public:
+		TFraction();
+		TInt operator*(TInt aInt) const;
+	public:
+		TInt iNumer;
+		TInt iDenom;
+		};
+private:
+	RArray<TAppMode>	iAppModes;
+	TInt iUiScaling;
+	MWsIniFile* iScreenIniFile;
+	MWsScreen* iScreen;
+	TSize iUiSizePixels;
+	TRect iAppSizePixels;
+	TSize iAppSizeTwips;
+	TSize iCompositionSizeTwips;
+	TSize iCompositionSizePixels;
+	TSize	iMinUiBufferSize;
+	TInt 	iNumNormalAppModes;
+	TInt	iLastAppMode;
+	TInt 	iConnectionStatus;
+	TInt 	iSmallestAppMode;
+	TSize 	iSmallestAppSize;
+	TDisplayConfiguration::TRotation iLastUiRotation;
+	TDisplayConfiguration::TRotation iLastCompositionRotation;
+	};
+
+#endif // CDISPLAYPOLICY_H