// Copyright (c) 2006-2009 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:

// TWsPointer and associated classes definitions

// 

//

#ifndef __POINTER_H__

#define __POINTER_H__

#include "server.h"

#include "advancedpointereventhelper.h"

class TWsPointer;

class CWsPointerTimer : public CTimer

	{

public:

	class MPointerTimerCallback

		{

	public:

		virtual void RepeatTimerCompleted() =0;

		};	

	static CWsPointerTimer* NewL(MPointerTimerCallback& aWsPointer);

private:

	CWsPointerTimer(MPointerTimerCallback& aPointerTimerCallback);

	void ConstructL();

	void RunL();

private:

	MPointerTimerCallback& iPointerTimerCallback;

	};

class TWsPointer : public CWsPointerTimer::MPointerTimerCallback

	{

	enum {EPointerUpdateGapInMicroSeconds=50000};

	enum TPointerState

		{

		EPointerStateOutOfRange=0,

		EPointerStateUp,

		EPointerStateDown

		};

public:

	static void InitStaticsL();

	static void Stop();

	static void DeleteStatics();

	static inline TPointerCursorMode PointerCursorMode();

	static inline void SetPointerCursorMode(TPointerCursorMode aMode);

	static inline TPoint PointerCursorPos();

	static void SetPointerCursorPos(TPoint aPos);

	static void ReLogPointersCurrentWindows();

	static void ReLogWindow(const CWsWindow* aWin);

	static void WindowDisconnected(const CWsWindow* deletedWindow);

	static TInt ClaimGrab(const CWsWindow* aWindow,const TWsWinCmdGrabControl& aGrabControl);	

#if defined(__WINS__)

	static TBool PreProcessDriverEvent(TRawEvent &aRawEvent,TBool aFromHardware=EFalse);

#else

	static TBool PreProcessDriverEvent(TRawEvent &aRawEvent);

#endif

	static TBool PreProcessClientEvent(TRawEvent &aRawEvent, TBool aAdvancedPointersEnabled);

	static TBool IsPointerEventType(TRawEvent::TType aType);

	static void ProcessWsEvent(TWsEvent& aEvent,const CWsWindowGroup* aForceInGroup,TBool aNatural);	

	static void GetDoubleClickSettings(TTimeIntervalMicroSeconds32 &aTime, TInt &aDistance);

	static void SetDoubleClick(const TTimeIntervalMicroSeconds32 &aTime, TInt aDistance);

	static void UpdatePointerCursor();

	static TInt RequestPointerRepeatEvent(CWsWindow* aWindow, const TWsWinCmdRequestPointerRepeatEvent& aRequest);

	static TInt CancelPointerRepeatEventRequest(const TWsWinCmdCancelPointerRepeatEventRequest& aCancel);

	void RepeatTimerCompleted(); // from CWsPointerTimer::MPointerTimerCallback	

	static TEventQueueWalkRet PointerRepeatPurgeCheck(TWsEvent* aEvent, TUint8 aPointerNumber);

	static inline void UnmatchedEventPurged(TPointerEvent::TType aPointerType, TWsEvent* aEventPurged);

	static void TimerExpired();

	static inline TBool XyInput();

#if defined(__WINS__)

	static void SetXyInputType(TXYInputType aXyInputType);

#endif

	static void UpdatePrimaryPointer(const TRawEvent& aRawEvent);

	static inline void RollbackPrimaryPointer();

	static TInt SetCloseProximityThresholds(TInt aEnterCloseProximityThreshold, TInt aExitCloseProximityThreshold);

	static TInt GetEnterCloseProximityThreshold();

	static TInt GetExitCloseProximityThreshold();

	static TInt SetHighPressureThresholds(TInt aEnterHighPressureThreshold, TInt aExitHighPressureThreshold);

	static TInt GetEnterHighPressureThreshold();

	static TInt GetExitHighPressureThreshold();

	static inline TInt PrimaryPointer();

private:

	/** Clears all fields to default values, state goes to EPointerStateOutOfRange */

	void Clear();

	void SendEnterExitEvent(TEventCode aType);

	void SetCurrentWindow(const CWsWindow* aWin);

	void ReLogCurrentWindow();

	void ReLogCurrentWindow(TPoint &aPos, TPoint &aParentPos, const CWsWindowGroup* aForceInGroup);

	void ProcessForegroundCheck();

	CWsPointerCursor* CalculatePointerCursor();

	void ProcessEvent(TWsEvent& aEvent,const CWsWindowGroup* aForceInGroup,TBool aNatural);	

	void ProcessEvent(TWsEvent& aEvent, TBool aNatural);

	void ProcessPointerEvent(TWsEvent& aEvent);

	void ProcessOutOfRangeEvent(TWsEvent& aEvent,const CWsWindowGroup* aForceInGroup, TBool aNatural);

	void UnmatchedEventPurged(TPointerEvent::TType aPointerType, TUint aHandle);

	TBool CheckMatchingEventPurged(TPointerEvent::TType aType);

	TBool QueuePointerEvent(const CWsWindow* aWindow, TWsEvent &event);

	void ClaimGrab(const CWsWindow* aWindow, TBool aSendUpEvent);

	void PointerCursorUpdateCheck();

	void NotifyCClick(TAdvancedPointerEvent& aPointerEvent);

	static void RestrictPos(TPoint& aPos,TBool aWithinDrawableArea=ETrue);

	void RequestRepeatEvent(CWsWindow* aWindow, const TWsWinCmdRequestPointerRepeatEvent& aRequest);

	void CancelPointerRepeatEventRequest();

	TBool PointerEventRepeatCheck(const TWsEvent* aEvent, TUint32 aHandle);

	static void UpdatePointerCursorTo(CWsPointerCursor* aNewCursor);

	static inline TBool MovesAvailable();

	static inline TBool DeltaMouse();

	static inline CWsWindow*& RepeatWindow(TUint8 aPointerNumber);

	static inline TRect& RepeatRect(TUint8 aPointerNumber);

	static inline CWsPointerTimer*& RepeatTimer(TUint8 aPointerNumber);

	static inline TBool PointerNumberInRange(TUint8 aPointerNumber);

	static void ShiftYCoordinate(TInt& aY);

private:

	/** Pointer number used to identify this pointer */

	TUint iNumber;

	/** State of the pointer - Up, Down or OutOfRange */

	TPointerState iState;

	/** 2D position of the pointer. Valid if iState != EPointerStateOutOfRange. */

	TPoint iPos;

	/** Combined pressure and proximity values for the pointer */

	TInt iPressureProximity;

	/** Where the pointer is 'Logged' taking into account position, grabbing and capturing */

	const CWsWindow* iCurrentWindow;

	/** Window under pointer */

	const CWsWindow* iActualWinPointerIsOver;

	/** Window that is grabbing this pointer's events (related to Drag events) */

	const CWsWindow* iGrabWindow;

	TUint iLastUnmatchedDown1;

	TUint iLastUnmatchedDown2;

	TUint iLastUnmatchedDown3;

	TUint iLastUnmatchedEnterHighPressure;

	/** Window which received last click, for double click detection */

	const CWsWindow* iPrevClickWindow;

	/** Position of last click, for double click detection */

	TPoint iPrevClickPos;

	/** Time of last click, for double click detection */ 

	TTime iPrevClickTime;

	/** Which button has been clicked last time, for double click detection */ 

	TPointerEvent::TType iPrevClickEventType;

	/** State upon which firing of EEnterCloseProximity and EExitCloseProximity

	events is based. */

	TBool iInCloseProximity;

	/** State upon which firing of EEnterHighPressure and EExitHighPressure

	events is based. */

	TBool iInHighPressure;

	/** Timer for pointer event repeating */

	CWsPointerTimer* iRepeatTimer;

	CWsWindow* iRepeatWindow;

	TRect iRepeatRect;

	/** Pointing device's type */

	static TXYInputType iXyInputType;

	/** Maximum number of pointers handled at the same time. Always at least 1. */ 

	static TInt iMaxPointers;

	/** Main array of TWsPointer objects, can keep up to iMaxPointers objects */

	static RArray<TWsPointer> iPointers;

	/** Index of Primary Pointer in iPointers array. */

	static TInt iPrimaryPointer;

	/** Previous primary pointer, before last run of UpdatePrimaryPointer(TRawEvent). */

	static TInt iPreviousPrimaryPointer;

	static CWsRootWindow* iRootWindow;

	/** Global setting for all pointers */

	static TTimeIntervalMicroSeconds32 iDoubleClickMaxInterval;

	/** Global setting for all pointers */

	static TInt iDoubleClickMaxDistance;

	static CWsPointerCursor* iCursorSprite;

	static TPointerCursorMode iPointerCursorMode;

	/** If pointer cursor update is required */

	static TBool iUpdateRequired;

	/** Timer for pointer cursor updates */

	static CPeriodic* iPeriodicTimer;

	/** For iPeriodicTimer */

	static TBool iTimerQueued;

	static TBool iIs3DPointer;

	/** Threshold upon which firing of EEnterCloseProximity event is based */

	static TInt iEnterCloseProximityThreshold;

	/** Threshold upon which firing of EExitCloseProximity event is based */

	static TInt iExitCloseProximityThreshold;

	/** Threshold upon which firing of EEnterHighPressure event is based */

	static TInt iEnterHighPressureThreshold;

	/** Threshold upon which firing of EExitHighPressure event is based */

	static TInt iExitHighPressureThreshold;

	/** Used to offset the y pointer */

	static TInt iYOffset;

	};

class CWsPointerBuffer : public CBase

	{

public:

	~CWsPointerBuffer();

	static void ConnectL(CWsClientWindow* aWindow, TInt aMaxPoints, TUint aFlags);

	static void Disconnect(CWsClientWindow* aWindow);

	static void PointerEvent(CWsClientWindow* aWindow,const TPoint &aPoint);

	static void RetrievePointerMoveBuffer(CWsClientWindow* aWindow,TInt aMaxPoints);

	static void DiscardPointerMoveBuffer(CWsClientWindow* aWindow);

	static void DiscardPointerMoveBuffer(TUint aHandle);

private:

	static void AdjustMaxSizeL();

	static void Reset();

	static void SignalBufferReady();

private:

	CWsClientWindow* iWindow;

	TInt iMaxPoints;

	TInt iFlags;

	TSglQueLink iQue;

	static TBool iSignalled;

	static CWsPointerBuffer* iCurrentBuffer;

	static CCirBuf<TPoint>* iPointerBuffer;

	static TSglQue<CWsPointerBuffer> iList;

	};

inline void TWsPointer::SetPointerCursorMode(TPointerCursorMode aMode)

	{iPointerCursorMode=aMode;}

inline TPointerCursorMode TWsPointer::PointerCursorMode()

	{return iPointerCursorMode;}

inline TPoint TWsPointer::PointerCursorPos()

	{return iPointers[iPrimaryPointer].iPos;}

inline void TWsPointer::UnmatchedEventPurged(TPointerEvent::TType aPointerType, TWsEvent* aEventPurged)

	{iPointers[TAdvancedPointerEventHelper::PointerNumber(*aEventPurged)].UnmatchedEventPurged(aPointerType, aEventPurged->Handle());}

inline TBool TWsPointer::XyInput()

	{return iXyInputType!=EXYInputNone;}

/*

EXYInputNone => no pointer, no moves.

EXYInputPointer && !iIs3DPointer => drags only, no moves (allows mouse to behave like pen for emulator)

EXYInputPointer && iIs3DPointer => drags and moves

EXYInputMouse => drags and moves  

EXYInputDeltaMouse => drags and moves

*/

inline TBool TWsPointer::MovesAvailable()

	{return (iXyInputType!=EXYInputNone && ((iXyInputType!=EXYInputPointer)||iIs3DPointer));}

inline TBool TWsPointer::DeltaMouse()

	{return (iXyInputType==EXYInputDeltaMouse);}

inline TInt TWsPointer::PrimaryPointer()

	{return iPrimaryPointer;}

/**

Sets primary pointer to the one which was present before last run of UpdatePrimaryPointer() method.

*/

inline void TWsPointer::RollbackPrimaryPointer()

	{iPrimaryPointer = iPreviousPrimaryPointer;}

inline CWsWindow*& TWsPointer::RepeatWindow(TUint8 aPointerNumber)

	{return iPointers[aPointerNumber].iRepeatWindow;}

inline TRect& TWsPointer::RepeatRect(TUint8 aPointerNumber)

	{return iPointers[aPointerNumber].iRepeatRect;}

inline CWsPointerTimer*& TWsPointer::RepeatTimer(TUint8 aPointerNumber)

	{return iPointers[aPointerNumber].iRepeatTimer;}

inline TBool TWsPointer::PointerNumberInRange(TUint8 aPointerNumber)

	{return (aPointerNumber<iMaxPointers);}

#endif