// 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:

//

/**

 @file

*/

#include <graphics/surfaceupdateclient.h>

#include "surfaceupdate.h"

inline void SurfaceUpdateAssert(TInt aCond)	{__ASSERT_ALWAYS(aCond, User::Panic(_L("surfaceupdateclient.cpp; assertion failed"), __LINE__));}

EXPORT_C RSurfaceUpdateSession::RSurfaceUpdateSession() :

	RSessionBase(), 

	iStatusAvailable(NULL), iStatusDisplayed(NULL), iStatusDisplayedXTimes(NULL)

	{

	}

EXPORT_C TInt RSurfaceUpdateSession::Connect(TInt aMessageSlots)

	{

	if(Handle())

		{

		return KErrAlreadyExists; 

		}

	iStatusAvailable = NULL;

	iStatusDisplayed = NULL;

	iStatusDisplayedXTimes = NULL;

	//establish connection to the server

#ifndef TEST_SURFACE_UPDATE

	return CreateSession(KSurfaceUpdateServerName, Version(), aMessageSlots);

#else

	return CreateSession(KTestSurfaceUpdateServerName, Version(), aMessageSlots);

#endif

	}

EXPORT_C void RSurfaceUpdateSession::Close()	

	{

	if(Handle())

		{

		RHandleBase::Close();

		}

	iStatusAvailable = NULL;

	iStatusDisplayed = NULL;

	iStatusDisplayedXTimes = NULL;

	}

EXPORT_C TInt RSurfaceUpdateSession::SubmitUpdate(TInt aScreen, const TSurfaceId& aSurfaceId, 

									TInt aBuffer, const TRegion* aDirtyRegion)

	{

	SurfaceUpdateAssert(Handle() != KNullHandle);

	if(aScreen < 0 || aBuffer < 0 || aSurfaceId.IsNull())

		{

		IssueRequestComplete(KErrArgument);

		return KErrArgument;

		}

	if(iStatusAvailable)

		{

		SendReceive(EUpdateServNotifyWhenAvailable, *iStatusAvailable);

		iStatusAvailable= NULL;

		}

	if(iStatusDisplayed)

		{

		TIpcArgs args(iTimeStamp);

		SendReceive(EUpdateServNotifyWhenDisplayed, args, *iStatusDisplayed);

		iStatusDisplayed=NULL;

		}

	if(iStatusDisplayedXTimes)

		{

		if(iCount <= 0)

			{

			User::RequestComplete(iStatusDisplayedXTimes, KErrArgument);

			}

		else

			{

			TIpcArgs args(iCount);

			SendReceive(EUpdateServNotifyWhenDisplayedXTimes, 

                     args, *iStatusDisplayedXTimes);

			}	

		iStatusDisplayedXTimes=NULL;

		}

	TPckgC<TSurfaceId> pckgSurfaceId(aSurfaceId);

	TIpcArgs theArgs(aScreen, &pckgSurfaceId, aBuffer);

	if(aDirtyRegion)

		{

		const TInt regionCount = aDirtyRegion->Count();

		if(regionCount > 0)

			{

			TPtrC8 ptrRect(reinterpret_cast<const TUint8*> (aDirtyRegion->RectangleList()), regionCount * sizeof(TRect));

			theArgs.Set(3, &ptrRect);

			}

		}

	//final request for composition 

	return SendReceive(EUpdateServSubmitUpdate, theArgs);

	}

EXPORT_C void RSurfaceUpdateSession::NotifyWhenAvailable(TRequestStatus& aStatus)

	{

	SurfaceUpdateAssert(Handle() != KNullHandle);

	iStatusAvailable = &aStatus;

	}

EXPORT_C void RSurfaceUpdateSession::NotifyWhenDisplayed(TRequestStatus& aStatus, TTimeStamp& aTimeStamp)

	{

	SurfaceUpdateAssert(Handle() != KNullHandle);

	iStatusDisplayed = &aStatus;

	iTimeStamp = &aTimeStamp;

	}

EXPORT_C void RSurfaceUpdateSession::NotifyWhenDisplayedXTimes(TInt aCount, TRequestStatus &aStatus)

	{

	SurfaceUpdateAssert(Handle() != KNullHandle);

	iStatusDisplayedXTimes = &aStatus;

	//we will check aCount validity at submission time (in SubmitUpdate)

	iCount = aCount;

	}

EXPORT_C void RSurfaceUpdateSession::CancelAllUpdateNotifications()

	{

	SurfaceUpdateAssert(Handle() != KNullHandle);

	SendReceive(EUpdateServCancelAllNotifications);

	//Signal calling client's TRequestStatus object if server didn't do that (SubmitUpdate is not called)

	//if SubmitUpdate is called, server will take care of signaling status object and following line does nothing

	IssueRequestComplete(KErrCancel);

	}

TVersion RSurfaceUpdateSession::Version() const

	{

	return (TVersion(KSurfaceUpdateServMajorVersionNumber, KSurfaceUpdateServMinorVersionNumber, KSurfaceUpdateServBuildVersionNumber));

	}

/*

 Helper function to complete all outstanding requests. 

 param - aErr Error code for completion.

 */

void RSurfaceUpdateSession::IssueRequestComplete(TInt aErr)

	{

	if(iStatusAvailable)

		{

		User::RequestComplete(iStatusAvailable, aErr);

		iStatusAvailable= NULL;

		}

	if(iStatusDisplayed)

		{

		User::RequestComplete(iStatusDisplayed, aErr);

		iStatusDisplayed=NULL;

		}

	if(iStatusDisplayedXTimes)

		{

		User::RequestComplete(iStatusDisplayedXTimes, aErr);

		iStatusDisplayedXTimes=NULL;

		}

	}