// Copyright (c) 1999-2009 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:

 // Sprite

 // 

 //

 #include <e32std.h>

 #include "sprite.h"

 #include "rootwin.h"

 #include "windowgroup.h"

 #include "ScrDev.H"

 #include "wstop.h"

 #include "ANIM.H"

 #include "offscreenbitmap.h"

 #include "panics.h"

 #include "EVENT.H"

 static const TInt64 KFlashHalfSecond(500000); //interval for flashing sprites

 GLDEF_D CWsDeltaTimer *CWsSpriteBase::iDeltaTimer=NULL;

 TInt TimerCallBack(TAny *aPtr)

 	{

 	((CWsSpriteBase *)aPtr)->TimerExpired();

 	return(KErrNone);

 	}

 //

 // CWsSpriteMember

 //

 CWsSpriteMember::CWsSpriteMember()

 	{

 	}

 CWsSpriteMember::~CWsSpriteMember()

 	{

 	delete iBitmap;

 	delete iMaskBitmap;

 	}

 TBool CWsSpriteMember::SetL(const TCmdSpriteMember &aCmdSpriteMember)

 	{

 	if (aCmdSpriteMember.iBitmap!=0)	// Null member of sequence, time is only valid field in member data

 		{

 		iBitmap=new(ELeave) CFbsBitmap();

 		TInt ret = iBitmap->Duplicate(aCmdSpriteMember.iBitmap);

 		if (ret == KErrNoMemory)

 			{

 			User::Leave(ret);

 			}

 		if (ret != KErrNone)

 			return(ETrue);

 		if (aCmdSpriteMember.iMaskBitmap)

 			{

 			iMaskBitmap=new(ELeave) CFbsBitmap();

 			TInt ret = iMaskBitmap->Duplicate(aCmdSpriteMember.iMaskBitmap);

 			if (ret == KErrNoMemory)

 				{

 				User::Leave(ret);

 				}

 			if (ret != KErrNone)

 				return(ETrue);

 			}

 		iInvertMask=aCmdSpriteMember.iInvertMask;

 		iDrawMode=aCmdSpriteMember.iDrawMode;

 		iOffset=aCmdSpriteMember.iOffset;

 		}

 	iInterval=aCmdSpriteMember.iInterval;

 	return(EFalse);

 	}

 //

 // CWsSpriteBase

 //

 TBool CWsSpriteBase::UpdateMemberL(CWsSpriteMember *aMember, const TCmdSpriteMember &aCmdSpriteMember)

 	{

 	CFbsBitmap *old=aMember->iBitmap;

 	CFbsBitmap *oldMask=aMember->iMaskBitmap;

 	aMember->iBitmap=NULL;

 	aMember->iMaskBitmap=NULL;

 	TBool ret=EFalse;

 	TRAPD(err,ret=aMember->SetL(aCmdSpriteMember));

 	if (err!=KErrNone)

 		{

 um_error:

 		delete aMember->iBitmap;

 		delete aMember->iMaskBitmap;

 		aMember->iBitmap=old;

 		aMember->iMaskBitmap=oldMask;

 		User::Leave(err);

 		}

 	TRAP(err,CheckSizesL());

 	if (err!=KErrNone)

 		goto um_error;

 	SetMember(0);

 	delete old;

 	delete oldMask;

 	return(ret);

 	}

 void CWsSpriteBase::InitStaticsL()

 	{

 	iDeltaTimer=CWsDeltaTimer::NewL(ESpriteAnimatePriority);

 	}

 void CWsSpriteBase::DeleteStatics()

 	{

 	delete iDeltaTimer;

 	}

 CWsSpriteBase::CWsSpriteBase(CWsClient *owner, WH_HANDLES aType) : CWsScreenObject(owner,aType,owner->Screen()), iClipSprite(EFalse)

 	{

 	}

 CWsSpriteBase::~CWsSpriteBase()

 	{

 	Deactivate();

 	//iDeltaTimer->Remove(iDeltaTimerEntry);

 	if (iMembers)

 		{

 		iMembers->ResetAndDestroy();

 		delete iMembers;

 		}

 	}

 void CWsSpriteBase::ForceRedraw()

 	{

     TRegionFix<1> region;

     region.AddRect(Rect());

     Screen()->AddRedrawRegion(region);

 	}

 void CWsSpriteBase::Deactivate()

 	{

 	//Disconnect from the sprite list and hide the sprite

 	if (iFlags & ESpriteActive)

 		{

 		if(iWin)

 			iWin->RemoveSprite(this);

 		if (iMembers && iMembers->Count()>1)

 			iDeltaTimer->Remove(iDeltaTimerEntry);

 		iFlags&=~ESpriteActive;

 		if (iFloating)

 			{

 			Screen()->SpriteManager()->RemoveFloatingSprite(this);

 			ForceRedraw();

 			}	

 		}

 	}

 void CWsSpriteBase::CheckSizesL()

 	{

 	iMaxSize.SetSize(0,0);

 	for(TInt index=0;index<iMembers->Count();index++)

 		{

 		CWsSpriteMember *wsm=(*iMembers)[index];

 		if (wsm->iBitmap)

 			{

 			TSize size=wsm->iBitmap->SizeInPixels();

 			if (wsm->iMaskBitmap)

 				{

 				TSize maskSize=wsm->iMaskBitmap->SizeInPixels();

 				if (maskSize.iWidth<size.iWidth || maskSize.iHeight<size.iHeight)

 					OwnerPanic(EWservPanicMaskSize);

 				}

 			if (size.iWidth>iMaxSize.iWidth)

 				iMaxSize.iWidth=size.iWidth;

 			if (size.iHeight>iMaxSize.iHeight)

 				iMaxSize.iHeight=size.iHeight;

 			}

 		}

 	}

 void CWsSpriteBase::ConstructL(TUint aFlags, CWsWindow *aWindow)

 	{

 	// Common part of construct for both sprites and pointer cursors

 	iFlags=aFlags;

 /*

 	if (iFlags&ESpriteNoChildClip)

 		iLink.iPriority+=ENoChildPriorityBoost;

 	if (iFlags&ESpritePointer)

 		iLink.iPriority+=EPointerPriorityBoost;

 */

 	iWin=aWindow;

 	TCallBack callback(TimerCallBack,this);

 	iDeltaTimerEntry.Set(callback);

 	iMembers=new(ELeave) CArrayPtrFlat<CWsSpriteMember>(10);

 	}

 void CWsSpriteBase::AppendMemberL(const TCmdSpriteMember &aCmdSpriteMember)

 	{

 	CWsSpriteMember *&pwsm=iMembers->ExtendL();

 	pwsm=NULL;	// In case new leaves

 	pwsm=new(ELeave) CWsSpriteMember();

 	if (pwsm->SetL(aCmdSpriteMember))

 		OwnerPanic(EWservPanicBitmap);

 	}

 void CWsSpriteBase::CompleteL()

 	{

 	if (iMembers->Count() <= 0)

 		{

 		if(iWin)

 			iWin->OwnerPanic(EWservPanicNoSpriteMember);

 		//Not sure if this is a neccessary fall back if iWin is NULL.

 		else if(iWin==NULL && iGroupWin)

 			iGroupWin->OwnerPanic(EWservPanicNoSpriteMember);

 		}

 	else

 		{

 		iMembers->Compress();

 		CheckSizesL();

 		SetMember(0);

 		}

 	}

 void CWsSpriteBase::Activate()

 	{

 	if (iFlags&ESpriteDisabled)

 		{

 		iFlags&=~ESpriteDisabled;

 		}

 	if (iMembers->Count()>1)

 		{

 		QueueDeltaTimer();

 		iDeltaTimer->Activate();

 		}

 	iFlags|=ESpriteActive;

 	if(iWin)	

 		iWin->AddSprite(this);

 	Screen()->SpriteManager()->Schedule(this);

 	if(iFloating)

 		{

 		Screen()->SpriteManager()->AddFloatingSprite(this);

 		ForceRedraw();

 		}

 	}

 void CWsSpriteBase::SetMember(TInt aIndex)

 	{

 	iCurIndex=aIndex;

 	iPos=iBasePos+(*iMembers)[iCurIndex]->iOffset;

 	if ((*iMembers)[iCurIndex]->iBitmap)

 		iSize=(*iMembers)[iCurIndex]->iBitmap->SizeInPixels();

 	else

 		iSize.SetSize(0,0);

 	if (iSize.iWidth > iMaxSize.iWidth || iSize.iHeight > iMaxSize.iHeight)

 		{

 		WS_ASSERT_DEBUG(EFalse, EWsPanicSpriteBitmapSizeChange);

 		CheckSizesL();

 		}

 	}

 void CWsSpriteBase::SetPos(const TPoint &aPos)

 	{

 	//Non-floating anim whose window is destroyed 

 	if (!iFloating && iWin==NULL) 

 		{ 

 		OwnerPanic(EWservPanicWindowDestroyed); 

 		} 

 	//Floating anim whose group window is destroyed 

 	if (iFloating  && iGroupWin==NULL) 

 		{ 

 		OwnerPanic(EWservPanicWindowDestroyed); 

 		}

 	iBasePos=aPos;

 	TPoint newPos(iBasePos+(*iMembers)[iCurIndex]->iOffset);

 	if (iPos!=newPos)

 		{

 		//Ensure the region covered by the sprite before as well as after the move gets scheduled for redraw

 		Screen()->SpriteManager()->Schedule(this);

 		iPos=newPos;

 		Screen()->SpriteManager()->Schedule(this);

 		}

 	}

 // Andy - replace delta timer with animation scheduling via screen

 void CWsSpriteBase::QueueDeltaTimer()

 	{

 	iDeltaTimer->Queue((*iMembers)[iCurIndex]->iInterval,iDeltaTimerEntry);

 	}

 void CWsSpriteBase::TimerExpired()

 	{

 	Screen()->SpriteManager()->Schedule(this);

 	SetMember((iCurIndex+1)==iMembers->Count() ? 0 : iCurIndex+1);

 	Screen()->SpriteManager()->Schedule(this);

 	QueueDeltaTimer();

 	iScreen->Update();

 	}

 TPoint CWsSpriteBase::Pos() const

 	{

 	if (iGroupWin || iWin==NULL)

 		{

 		return(iPos);

 		}

 	return(iPos+iWin->Origin());

 	}

 TRect CWsSpriteBase::Rect() const

 	{

 	TRect rect;

 	rect.iTl=Pos();

 	rect.iBr=rect.iTl+iSize;

 	return(rect);

 	}

 void CWsSpriteBase::CommandL(TInt aOpcode, const TAny *aCmdData)

 	{

 	TWsSpriteCmdUnion pData;

 	pData.any=aCmdData;

 	switch(aOpcode)

 		{

 		case EWsSpriteOpAppendMember:

 			AppendMemberL(*pData.SpriteMember);

 			break;

 		case EWsSpriteOpActivate:

 			if(!(iFlags&ESpriteActive))

 				{

 				CompleteL();

 				}

 			break;

 		case EWsSpriteOpUpdateMember:

 			if (pData.UpdateMember->index==iCurIndex)

 				{

 				TRect rect(Pos(), iMaxSize);

 				Screen()->SpriteManager()->Schedule(this,&rect);

 				}

 			break;

 		case EWsSpriteOpUpdateMember2:

 			{

 			Screen()->SpriteManager()->Schedule(this);

 			if (pData.UpdateMember->index<0 || pData.UpdateMember->index>=iMembers->Count())

 				User::Leave(KErrArgument);

 			CWsSpriteMember *member=(*iMembers)[pData.UpdateMember->index];

 			TBool ret=EFalse;

 			TRAPD(err,ret=UpdateMemberL(member,pData.UpdateMember->data));

 			if (err==KErrNone)

 				{

 				TRAP(err,CheckSizesL());

 				SetMember(0);

 				}

 			Screen()->SpriteManager()->Schedule(this);

 			User::LeaveIfError(err);

 			if (ret)

 				OwnerPanic(EWservPanicBitmap);

 			}

 			break;

 		default:

 			OwnerPanic(EWservPanicOpcode);

 			break;

 		}

 	}

 TBool CWsSpriteBase::CanBeSeen() const

 	{

 	if(iWin)

 		return (!(iFlags&ESpriteDisabled)) && (!iWin->VisibleRegion().IsEmpty());

 	else 

 		return (!(iFlags&ESpriteDisabled));

 	}

 void CWsSpriteBase::Redraw(CFbsBitGc * aGc, const TRegion& aRegion)

 	{

 	TFlashState currentState=EFlashOn;

 	if(IsFlashingEnabled())

 		currentState=Screen()->SpriteManager()->CurrentSpriteFlashState(this);

 	if(currentState==EFlashOn)

 		{

 		STACK_REGION region;

 		region.Copy(aRegion);

 		const TRegion * pr = &region;

 		if (iClipSprite)

 			{

 			//PeterI iWin shouldn't be null as iClipSprite is currently only set by the text cursor (which is never floating)

 			//but just in case make sure we don't derefernce if it is null.

 			TPoint origin(0,0);

 			if(iWin)

 				origin = iWin->Origin();

 			TRect rect(iBasePos + origin + iClipOffset, iClipSize);

 			region.ClipRect(rect);

 			}

 		region.ClipRect(RootWindow()->Abs());

 		// Only need to draw if the region being redrawn overlaps the sprite

 		const TRect spriteRect(Pos(), iSize);

 		STACK_REGION spriteRegion;

 		spriteRegion.AddRect(spriteRect);

 		region.Intersect(spriteRegion);

 		spriteRegion.Close();

 		if (pr->CheckError())

 			{

 			if(iWin)

 				pr = &iWin->VisibleRegion();

 			else

 				pr = &RootWindow()->WindowArea();

 			}

 		if (!pr->IsEmpty())

 			{

 			CWsSpriteMember *member=(*iMembers)[iCurIndex];

 			if (member->iBitmap)

 				{

 				aGc->SetClippingRegion(pr);

 				// Calculate which piece (rect) of the bitmap needs to be drawn

 				const TRect redrawRect = pr->BoundingRect();

 				TRect bitmapRect(spriteRect); // sprite rect relative to screen

 				bitmapRect.Intersection(redrawRect);

 				bitmapRect.Move(-Pos()); // adjust relative to bitmap origin

 				if (member->iMaskBitmap)

 					aGc->BitBltMasked(Pos() + bitmapRect.iTl, member->iBitmap, bitmapRect, member->iMaskBitmap, member->iInvertMask);

 				else

 					{

 					aGc->SetDrawMode(member->iDrawMode);

 					aGc->BitBlt(Pos() + bitmapRect.iTl, member->iBitmap, bitmapRect);

 					aGc->SetDrawMode(CGraphicsContext::EDrawModePEN);

 					}

 				aGc->SetClippingRegion(NULL);

 				}

 			}

 		region.Close();

 		}

 	//flashing sprites need to reschedule themselves after drawing

 	if(IsFlashingEnabled())

 		Screen()->SpriteManager()->Schedule(this);

 	}

 TBool CWsSpriteBase::IsActivated() const

 	{

 	return (iFlags&ESpriteActive);

 	}

 //

 // CWsSprite

 //

 CWsSprite::CWsSprite(CWsClient *owner) : CWsSpriteBase(owner,WS_HANDLE_SPRITE)

 	{

 	}

 CWsSprite::~CWsSprite()

 	{

     if (!iFloating && IsActivated() && iWin && iWin->IsVisible())

         ForceRedraw();

 	if (iAnim)

 		CWsAnim::CloseAnim(iAnim);

 	}

 void CWsSprite::ConstructL(const TWsClCmdCreateSprite &aParams)

 	{

 	NewObjL();

 	CWsWindowBase *win;

 	WsOwner()->HandleToWindow(aParams.window,&win);

 	if (win->WinType()==EWinTypeGroup)

 		{

 		//If a sprite is attached to a group window it is floating. 

 		//Floating sprite drawing is performed by the sprite manager.

 		iGroupWin=(CWsWindowGroup *)win;

 		win=NULL; //Floating sprites aren't associated with any particular window.

 		iFloating=ETrue;

 		}

 	CWsSpriteBase::ConstructL(aParams.flags&ESpriteNonSystemFlags,(CWsWindow *)win);

 	iBasePos=aParams.pos;

 	}

 void CWsSprite::CompleteL()

 	{

 	CWsSpriteBase::CompleteL();

 	Activate();

 	}

 void CWsSprite::CommandL(TInt aOpcode, const TAny *aCmdData)

 	{

 	TWsSpriteCmdUnion pData;

 	pData.any=aCmdData;

 	switch(aOpcode)

 		{

 		case EWsSpriteOpSetPosition:

 			SetPos(*pData.Point);

 			break;

 		case EWsSpriteOpFree:

 			delete this;

 			break;

 		default:

 			CWsSpriteBase::CommandL(aOpcode, aCmdData);

 			break;

 		}

 	}

 /**

 @see MAnimSpriteFunctions::UpdateMember

 @param aFullUpdate	Not used. Wserv2 always do full back to front rendering, so there is no distinction between changes needing aFullUpdate or not 

  */

 void CWsSprite::Update(TInt aMember,TRect aRect,TBool /*aFullUpdate*/) 

 	{

 	if (iCurIndex!=aMember)

 		return;

 	aRect.Move(Pos());

 	aRect.Intersection(iScreen->CurrentScreenSize());

 	Screen()->SpriteManager()->Schedule(this, &aRect);

 	}

 //

 // CWsPointerCursor

 //

 CWsPointerCursor::CWsPointerCursor(CWsClient *owner) : CWsSpriteBase(owner,WS_HANDLE_POINTER_CURSOR)

 	{

 	}

 void CWsPointerCursor::CloseObject()

 	{

 	RemoveFromIndex();

 	Close();

 	}

 void CWsPointerCursor::Close()

 	{

 	WS_ASSERT_DEBUG(iAccessCount>0, EWsPanicPointerCursorAccessCount);

 	if (--iAccessCount==0)

 		delete this;

 	}

 void CWsPointerCursor::Open()

 	{

 	iAccessCount++;

 	}

 CWsPointerCursor::~CWsPointerCursor()

 	{

 	WS_ASSERT_DEBUG(iAccessCount==0, EWsPanicPointerCursorAccessCount);

 	}

 void CWsPointerCursor::ConstructL(const TWsClCmdCreatePointerCursor &aParams)

 	{

 	NewObjL();

 	CWsSpriteBase::ConstructL(ESpriteNoShadows|ESpriteNoChildClip|ESpritePointer|(aParams.flags&ESpriteNonSystemFlags),RootWindow());

 	Open();

 	}

 void CWsPointerCursor::CommandL(TInt aOpcode, const TAny *aCmdData)

 	{

 	switch(aOpcode)

 		{

 		case EWsSpriteOpFree:

 			CloseObject();

 			break;

 		default:

 			CWsSpriteBase::CommandL(aOpcode, aCmdData);

 			break;

 		}

 	}

 //

 // CWsCustomTextCursor

 //

 CWsCustomTextCursor::CWsCustomTextCursor (CWsClient *aOwner, RWsSession::TCustomTextCursorAlignment aAlignment) 

 : CWsSpriteBase(aOwner, WS_HANDLE_TEXT_CURSOR), iAlignment(aAlignment)

 	{

 	}

 CWsCustomTextCursor::~CWsCustomTextCursor()

 	{

 	}

 void CWsCustomTextCursor::ConstructL(TInt aFlags)

 	{

 	NewObjL();

 	CWsSpriteBase::ConstructL(ESpriteNoShadows|ESpriteNoChildClip|ESpritePointer|(aFlags&ESpriteNonSystemFlags), NULL);

 	}

 void CWsCustomTextCursor::CompleteL(CWsWindow *aWin, TBool aFlash, TBool aClipSprite, const TPoint& aClipOffset, const TSize& aClipSize)

 	{

 	iWin = aWin;

 	iFlags = aFlash ? iFlags | ESpriteFlash : iFlags & ~ESpriteFlash;

 	iClipSprite = aClipSprite;

 	iClipOffset = aClipOffset;

 	iClipSize = aClipSize;

 	CWsSpriteBase::CompleteL();

 	}

 // Use SetPositionNoRedraw instead of SetPos when you just want to update

 // the custom text cursor position without redrawing it

 void CWsCustomTextCursor::SetPositionNoRedraw(const TPoint& aPos)

 	{

 	iBasePos = aPos;

 	TPoint newPos(iBasePos+(*iMembers)[iCurIndex]->iOffset);

 	iPos=newPos;

 	}

 void CWsCustomTextCursor::CommandL(TInt aOpcode, const TAny *aCmdData)

 	{

 	switch(aOpcode)

 		{

 		case EWsSpriteOpFree:

 			// CWsCustomTextCursor objects are owned by the text cursor list.

 			// They are not deleted when the client closes it's R class.

 			RemoveFromIndex();

 			break;

 		default:

 			CWsSpriteBase::CommandL(aOpcode, aCmdData);

 			break;

 		}

 	}

 //

 // CWsDeltaTimer, nicked from CDeltaTimer and tweaked so it doesn't re-activate			//

 // the timers until RunL has finished running all ready timers.							//

 //																						//

 // This is to stop a problem in Wserv where sprites could hog 100% CPU if the time		//

 // it took to process them was longer than the time of the timer queued when the first	//

 // sprite was updated																	//

 //

 CWsDeltaTimer* CWsDeltaTimer::NewL(TInt aPriority)

 	{

 	CWsDeltaTimer* wsdt=new(ELeave) CWsDeltaTimer(aPriority);

 	CleanupStack::PushL(wsdt);

 	User::LeaveIfError(wsdt->iTimer.CreateLocal());

 	CActiveScheduler::Add(wsdt);

 	CleanupStack::Pop(wsdt);

 	return(wsdt);

 	}

 CWsDeltaTimer::CWsDeltaTimer(TInt aPriority) : CActive(aPriority),iQueue(_FOFF(TWsDeltaTimerEntry,iLink))

 	{

 	}

 CWsDeltaTimer::~CWsDeltaTimer()

 	{

 	Cancel();

 	while(iQueue.RemoveFirst()!=NULL)

 		{}

 	}

 void CWsDeltaTimer::Queue(TTimeIntervalMicroSeconds32 aTimeInMicroSeconds,TWsDeltaTimerEntry& anEntry)

 	{

 	TInt intervals=aTimeInMicroSeconds.Int()/CWsDeltaTimerGranularity;

 	if (intervals==0)

 		intervals=1;

 	iQueue.Add(anEntry,intervals);

 	}

 void CWsDeltaTimer::Activate()

 	{

 	// Queue a request on the timer.

 	// The timer runs every tenth of a second and decremented the delta of the head of the queue.

 	if (IsActive())

 		return;

 	if (!iQueue.IsEmpty())

 		{

 		SetActive();

 		iTimer.After(iStatus,CWsDeltaTimerGranularity-1); // -1 to compensate for +1 in kernel!

 		}

 	}

 void CWsDeltaTimer::RunL()

 	{

 	// Call all zero delta callbacks

 	iQueue.CountDown();

 	TWsDeltaTimerEntry* ent=iQueue.RemoveFirst();

 	while (ent)

 		{       

 		ent->iCallBack.CallBack();

 		ent=iQueue.RemoveFirst();

 		}

 	Activate();

 	}

 void CWsDeltaTimer::DoCancel()

 	{

 	iTimer.Cancel();

 	}

 void CWsDeltaTimer::Remove(TWsDeltaTimerEntry& anEntry)

 	{

 	if (anEntry.IsPending())

 		{

 		iQueue.Remove(anEntry);

 		Activate();

 		}

 	}

 //

 // CWsSpriteManager -handles floating and flashing sprites including flashing custom text cursors. i.e. cursors

 //					that have an associated sprite.

 CWsSpriteManager::CWsSpriteManager()

 	{

 	}

 CWsSpriteManager::~CWsSpriteManager()

 	{

 	iFloatingSprites.ResetAndDestroy();

 	}

 CWsSpriteManager* CWsSpriteManager::NewL()

 	{

 	CWsSpriteManager* self = new (ELeave) CWsSpriteManager();

 	CleanupStack::PushL(self);

 	self->ConstructL();

 	CleanupStack::Pop(self);

 	return self;	

 	}

 void CWsSpriteManager::ConstructL()

 	{

 	}

 void CWsSpriteManager::AddFloatingSprite(CWsSpriteBase* aSprite)

 	{

 	iFloatingSprites.Append(aSprite);

 	}

 void CWsSpriteManager::RemoveFloatingSprite(CWsSpriteBase* aSprite)

 	{

 	for (TInt i=0 ; i<iFloatingSprites.Count() ; i++)

 		{

 		if(iFloatingSprites[i]==aSprite)

 			{

 			//Just remove the sprite don't delete it. the manager doesn't have ownership

 			iFloatingSprites.Remove(i); 

 			break;

 			}

 		}

 	}

 void CWsSpriteManager::DrawFloatingSprites(CFbsBitGc* aGc,const TRegion& aRegion)

 	{

 	for (TInt i=0 ; i<iFloatingSprites.Count() ; i++)

 		{

 		aGc->Reset();

 		iFloatingSprites[i]->Redraw(aGc, aRegion);

 		}

 	}

 void CWsSpriteManager::Schedule(CWsSpriteBase* aSprite, TRect* aRect)

 	{

 	if (aRect != NULL && aRect->IsEmpty())

 		return;

 	TRect rect = aSprite->Rect();

 	if (aRect)

 		rect.Intersection(*aRect);

 	if(aSprite->IsFlashingEnabled())

 		{

 		aSprite->Screen()->ScheduleAnimation(rect,NextSpriteFlashStateChange(aSprite),0,0);

 		}

 	else

 		{

 		//Scheduling an animation "now" means it will take place at next animation which might 

 		//be the full animation grace period into the future (see KAnimationGrace in server.cpp)

 		aSprite->Screen()->ScheduleAnimation(rect,0,0,0);

 		}

 	}	

 // Sprite flashing is clamped to half second intervals in relation to the global time.

 // For the first half of each second all sprites have the EFlashOn state (visible)

 // For the second half of each second all sprites have the EFlashOff state (not visible) 

 TTimeIntervalMicroSeconds CWsSpriteManager::NextSpriteFlashStateChange(const CWsSpriteBase* aSprite) const

 	{

 	const TTimeIntervalMicroSeconds remainder = aSprite->Screen()->Now().DateTime().MicroSecond();

 	return CalculateTimeToNextFlash(remainder);

 	}

 TTimeIntervalMicroSeconds CWsSpriteManager::NextCursorFlashStateChange() const

 	{

 	const TTimeIntervalMicroSeconds remainder = CWsTop::CurrentFocusScreen()->Now().DateTime().MicroSecond();

 	return CalculateTimeToNextFlash(remainder);

 	}

 TTimeIntervalMicroSeconds CWsSpriteManager::CalculateTimeToNextFlash(TTimeIntervalMicroSeconds aTime) const

 	{

 	TInt64 nextStateChange;

 	if(aTime<KFlashHalfSecond)

 		nextStateChange=KFlashHalfSecond-aTime.Int64();

 	else

 		nextStateChange=KFlashHalfSecond - (aTime.Int64() - KFlashHalfSecond);

 	return TTimeIntervalMicroSeconds(nextStateChange);

 	}	

 TFlashState CWsSpriteManager::CurrentSpriteFlashState(const CWsSpriteBase* aSprite) const

 	{

 	return (aSprite->Screen()->Now().DateTime().MicroSecond()<KFlashHalfSecond)?EFlashOn:EFlashOff;

 	}

 TFlashState CWsSpriteManager::CurrentCursorFlashState() const

 	{

 	return (CWsTop::CurrentFocusScreen()->Now().DateTime().MicroSecond()<KFlashHalfSecond)?EFlashOn:EFlashOff;

 	}

 void CWsSpriteManager::CalcFloatingSpriteRgn( TRegion& aResultRgn, const TRect& aDefaultRect )

 	{

 	aResultRgn.Clear();

 	for (TInt i=0 ; i<iFloatingSprites.Count() && !aResultRgn.CheckError(); i++)

 		{

 		CWsSpriteBase* sprite = iFloatingSprites[i]; 

 		if ( sprite->CanBeSeen() && ( sprite->IsActive() || sprite->IsActivated() ) )

 			{

 			aResultRgn.AddRect( sprite->Rect() );

 			}

 		}

 	aResultRgn.Tidy();

 	if ( aResultRgn.CheckError() && iFloatingSprites.Count() > 0 )

 		{

 		aResultRgn.Clear();

 		aResultRgn.AddRect( aDefaultRect );

 		}

 	}