// Copyright (c) 1995-2009 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:

 //

 #include "graphics/WSGRAPHICMSGBUF.H"

 #include "W32STDGRAPHIC.H"

 //so sue us; fixing a very nasty-to-track-down unsigned/signed conversion defect in code below

 #define KSizeOfTInt (TInt)sizeof(TInt)

 // TWsGraphicMsgBufParser \\\\\\\\\\\\\\\\\\\\\\\\

 EXPORT_C TWsGraphicMsgBufParser::TWsGraphicMsgBufParser(const TDesC8& aData): iData(aData)

 /** Initialise a parser for the specified message buffer */

 	{

 	}

 EXPORT_C TInt TWsGraphicMsgBufParser::Verify() const

 /** Verifies that the message buffer is properly formed

 	@return KErrNone if buffer is ok, else a system-wide error code */

 	{

 	const TInt length = iData.Length();

 	TInt ofs = 0;

 	const TInt tmp = (length - sizeof(TInt));

  	while(ofs < tmp)

 		{

 		ofs += IntAt(ofs+KSizeOfTInt) + (KSizeOfTInt*2);

 		}

 	if(ofs == length)

 		{

 		return KErrNone;

 		}

 	return KErrCorrupt;

 	}

 EXPORT_C TInt TWsGraphicMsgBufParser::Count() const

 /** Returns the number of elements in the buffer.

 @return the count of elements.

 */

 	{

 	const TInt length = iData.Length();

 	TInt ofs = 0, count = 0;

 	while(ofs < length)

 		{

 		count++;

 		ofs += IntAt(ofs+KSizeOfTInt) + (KSizeOfTInt*2);

 		}

 	return count;

 	}

 EXPORT_C TUid TWsGraphicMsgBufParser::Uid(TInt aIndex) const

 /** Returns the UID if the message, or null UID if the buffer is empty.

 @return KNullUid if the buffer is empty, otherwise the stored Uid

 */

 	{

 	const TInt length = iData.Length();

 	TInt ofs = 0, count = 0;

 	while(ofs < length)

 		{

 		if(count == aIndex)

 			{

 			return TUid::Uid(IntAt(ofs));

 			}

 		count++;

 		ofs += IntAt(ofs+KSizeOfTInt) + (KSizeOfTInt*2);

 		}

 	return KNullUid;

 	}

 EXPORT_C TPtrC8 TWsGraphicMsgBufParser::Data(TInt aIndex) const

 /**Returns the buffer contents at a perticular offset (aIndex).

 @param aIndex - the index into of the buffer element required.

 @return KNullDesC8 if index is more than the element count, otherwise, the element at index aIndex.

 */

 	{

 	const TInt length = iData.Length();

 	TInt ofs = 0, count = 0;

 	while(ofs < length)

 		{

 		if(count == aIndex)

 			{

 			return iData.Mid(ofs+(KSizeOfTInt*2),IntAt(ofs+KSizeOfTInt));

 			}

 		count++;

 		ofs += IntAt(ofs+KSizeOfTInt) + (KSizeOfTInt*2);

 		}

 	return TPtrC8(KNullDesC8());

 	}

 EXPORT_C TInt TWsGraphicMsgBufParser::Find(TUid aUid,TInt aStartingFrom) const

 /** Finds the element equal to the aUid, and returns the index of the element in the buffer.

 @param aUid - the search item to be found in the buffer.

 @param aStartingFrom - the starting index.

 @return the position (index) of the found element, or KErrNotFound

 */

 	{

 	const TInt length = iData.Length();

 	TInt ofs = 0, count = 0;

 	while(ofs < length)

 		{

 		if((count >= aStartingFrom) && (aUid == TUid::Uid(IntAt(ofs))))

 			{

 			return count;

 			}

 		count++;

 		ofs += IntAt(ofs+KSizeOfTInt) + (KSizeOfTInt*2);

 		}

 	return KErrNotFound;

 	}

 EXPORT_C TBool TWsGraphicMsgBufParser::LoadFixed(TUid aUid,TAny* aMsg,TInt aMsgSize,TInt aStartingFrom) const

 /** Loads the buffer of aMsg with the contents of the buffer, based on the aUid and aMsgSize.

 @param aUid - the Uid to match after which the loading is performed.

 @param aMsg - the pointer to the output buffer.

 @param aMsgSize - the size of the output buffer.

 @param aStartingFrom - the starting position to be used in the search of the buffer.

 @return ETrue if loaded, EFalse otherwise.

 */

 	{

 	const TInt length = iData.Length();

 	TInt ofs = 0, count = 0;

 	while(ofs < length)

 		{

 		if((count >= aStartingFrom) && (aUid == TUid::Uid(IntAt(ofs))))

 			{

 			// found it?  return it

 			const TInt len = IntAt(ofs+KSizeOfTInt);

 			if(len == aMsgSize)

 				{

 				TPtr8 msg(reinterpret_cast<TUint8*>(aMsg),aMsgSize);

 				msg = iData.Mid(ofs+(KSizeOfTInt*2),len);

 				return ETrue;

 				}

 			else // message was not the expected size!

 				{

 				return EFalse;

 				}

 			}

 		count++;

 		ofs += IntAt(ofs+KSizeOfTInt) + (KSizeOfTInt*2);

 		}

 	return EFalse;

 	}

 TInt TWsGraphicMsgBufParser::IntAt(TInt aOfs) const

 /** @internalComponent @released */

 	{

 	if((aOfs < 0) || ((aOfs+KSizeOfTInt) > iData.Length()))

 		{

 		return 0;

 		}

 	TInt ret;

 	memcpy(&ret,iData.Ptr()+aOfs,KSizeOfTInt);

 	return ret;

 	}

 // TWsGraphicMsgAnimation \\\\\\\\\\\\\\\\\\\\\\\\

 EXPORT_C TWsGraphicMsgAnimation::TWsGraphicMsgAnimation(): iFlags(EStopped)

 	{

 	}

 EXPORT_C TInt TWsGraphicMsgAnimation::Load(const TWsGraphicMsgBufParser& aData)

 	{

 	const TInt index = aData.Find(TUid::Uid(TWsGraphicAnimation::ETypeId));

 	if(index >= 0)

 		{

 		return Load(aData,index);

 		}

 	return index;

 	}

 EXPORT_C TInt TWsGraphicMsgAnimation::Load(const TWsGraphicMsgBufParser& aData,TInt aIndex)

 	{

 	if(aData.Uid(aIndex).iUid != TWsGraphicAnimation::ETypeId)

 		{

 		return KErrArgument;

 		}

 	const TPtrC8 pckg = aData.Data(aIndex);

 	if(pckg.Size() != sizeof(TWsGraphicMsgAnimation))

 		{

 		return KErrCorrupt;

 		}

 	memcpy(this,pckg.Ptr(),sizeof(TWsGraphicMsgAnimation));

 	return KErrNone;

 	}

 EXPORT_C TTimeIntervalMicroSeconds TWsGraphicMsgAnimation::AnimationTime(const TTime& aNow,const TTimeIntervalMicroSeconds& aAnimationLength) const

 	{

 	// an animation to time?

 	if(aAnimationLength <= 0LL)

 		{

 		return 0LL;

 		}

 	switch(iFlags & EStateMask)

 		{

 		case EPaused:

 			return ((iPauseOrStopping.Int64() - iPlay.Int64()) % aAnimationLength.Int64());

 		case EStopping:

 			{

 			const TInt64 elapsed = (aNow.Int64() - iPlay.Int64());

 			if(elapsed <= aAnimationLength.Int64())

 				{

 				return (elapsed % aAnimationLength.Int64());

 				}

 			return 0LL;

 			}

 		case EStopped:

 			return 0LL;

 		case EPlaying:

 			{

 			const TInt64 elapsed = (aNow.Int64() - iPlay.Int64());

 			if((iFlags & ELoop) || (elapsed <= aAnimationLength.Int64()))

 				{

 				return (elapsed % aAnimationLength.Int64());

 				}

 			return 0LL;

 			}

 		default:

 			return 0LL;

 		}

 	}

 EXPORT_C TBool TWsGraphicMsgAnimation::IsPlaying(const TTime& aNow,const TTimeIntervalMicroSeconds& aAnimationLength) const

 	{

 	// an animation to time?

 	if(aAnimationLength <= 0LL)

 		{

 		return EFalse;

 		}

 	switch(iFlags & EStateMask)

 		{

 		case EPaused:

 			return EFalse;

 		case EStopping:

 			{

 			const TInt64 elapsed = (aNow.Int64() - iPlay.Int64());

 			if(elapsed <= aAnimationLength.Int64())

 				{

 				return ETrue;

 				}

 			return EFalse;

 			}

 		case EStopped:

 			return EFalse;

 		case EPlaying:

 			{

 			const TInt64 elapsed = (aNow.Int64() - iPlay.Int64());

 			if((iFlags & ELoop) || (elapsed <= aAnimationLength.Int64()))

 				{

 				return ETrue;

 				}

 			return EFalse;

 			}

 		default:

 			return EFalse;

 		}

 	}