// 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 <fntstore.h>

#include <bitmap.h>

#include "FBSVER.H"

#include "SERVER.H"

#include "BackGroundCompression.h"

#include "linkedfonts.h"

#include "BitwiseBitmap.inl"

const TInt KFbsPriority = 0;

// Setup security policies

const TInt KRanges[] = 

	{

	0,

	EFbsMessShutdown,

	EFbsMessClose,

	EFbsSetSystemDefaultTypefaceName,

	EFbsGetAllBitmapHandles,

	EFbsMessUnused1,

	EFbsMessUnused2,

	EFbsMessRegisterLinkedTypeface,

	EFbsMessFetchLinkedTypeface,

	EFbsMessUpdateLinkedTypeface,

	};

const TUint KRangeCount = sizeof(KRanges)/sizeof(TInt);

const TUint8 KElementsIndex[KRangeCount] = 

	{

	0,

	3, // For EFbsMessShutdown

	0,

	1, // For EFbsSetSystemDefaultTypefaceName

	2, // For EFbsGetAllBitmapHandles

	0, // ECapability_None for EFbsMessUnused1

	0, // ECapability_None for EFbsMessUnused2 and beyond

	1, // ECapabilityWriteDeviceData for EFbsMessRegisterLinkedTypeface

	2, // ECapabilityReadDeviceData for EFbsMessFetchLinkedTypeface

	1, // ECapabilityWriteDeviceData for EFbsMessUpdateLinkedTypeface

	};

const CPolicyServer::TPolicyElement KElements[] = 

	{

	{_INIT_SECURITY_POLICY_C1(ECapability_None), CPolicyServer::EFailClient},

	{_INIT_SECURITY_POLICY_C1(ECapabilityWriteDeviceData), CPolicyServer::EFailClient},

	{_INIT_SECURITY_POLICY_C1(ECapabilityReadDeviceData), CPolicyServer::EFailClient},

	{_INIT_SECURITY_POLICY_C1(ECapabilityPowerMgmt), CPolicyServer::EFailClient},	

 	};

const CPolicyServer::TPolicy KFbsPolicy =

	{

	CPolicyServer::EAlwaysPass, //specifies all connect attempts should pass

	KRangeCount,

	KRanges,

	KElementsIndex,

	KElements,

	};

CFontBitmapServer::CFontBitmapServer():

	CPolicyServer(KFbsPriority, KFbsPolicy),

	iConnectionId(0),

	iTopLevelStore(NULL)

	{

	}

CFontBitmapServer::~CFontBitmapServer()

	{

	delete iTopLevelStore;

	iTopLevelStore = NULL;	// so that CFBClient::~CFbClient can avoid using this pointer;

							// it may be called inside CFontBitmapServer::~CFontBitmapServer

	}

CFontBitmapServer* CFontBitmapServer::NewL()

	{

	CFontBitmapServer* fbs=new(ELeave) CFontBitmapServer;

	CleanupStack::PushL(fbs);

	fbs->iTopLevelStore=CFbTop::NewL();

	// If fbserv data paging is configured as unpaged, automatically pin client descriptors 

	if(!RProcess().DefaultDataPaged())

		{

		fbs->SetPinClientDescriptors(ETrue);

		}

	fbs->StartL(KFBSERVGlobalThreadName);

	CleanupStack::Pop();

	return(fbs);

	}

CFbTop* CFontBitmapServer::TopLevelStore()

	{

	return(iTopLevelStore);

	}

CSession2* CFontBitmapServer::NewSessionL(const TVersion& aVersion,const RMessage2& /*aMessage*/ ) const

	{

	TVersion v(KFbsMajorVersionNumber,KFbsMinorVersionNumber,KFbsBuildVersionNumber);

	if(!User::QueryVersionSupported(v,aVersion))

		User::Leave(KErrNotSupported);

	CSession2* pSession2 = CFbClient::NewL(iTopLevelStore->Heap());

	return pSession2;

	}

TInt CFontBitmapServer::Init()

	{

	return(iConnectionId++);

	}

TInt CFontBitmapServer::HandleMesgTypefaceSupport(const RMessage2& aMessage, TBool& aClientPanicRequired)

	{

	TTypefaceSupport tfi;

	TPckgBuf<TTypefaceSupport> ttipckg(tfi);

	TPckgBuf<TSize> pixelSize;

	TInt index=aMessage.Int0();

	TInt limit=iTopLevelStore->FontStore()->NumTypefaces();

	if(index<0 || index>limit)

		{

		return KErrArgument;

		}

	TInt ret = aMessage.Read(2, pixelSize);

	if (ret != KErrNone)

		{

		return ret;

		}

	iTopLevelStore->FontStore()->iKPixelHeightInTwips = pixelSize().iHeight;

	iTopLevelStore->FontStore()->iKPixelWidthInTwips = pixelSize().iWidth;

	iTopLevelStore->FontStore()->TypefaceSupport(ttipckg(),index);

	ret = aMessage.Write(1,ttipckg);

	if(ret!=KErrNone)

		{

		aClientPanicRequired = ETrue;

		}

	return ret;

	}

TInt CFontBitmapServer::HandleMesgFontHeight(const RMessage2& aMessage, TBool aInTwips)

	{

	TInt typefaceindex = aMessage.Int0();

	TInt fontsize = aMessage.Int1();

	if(typefaceindex < 0)

		{

		aMessage.Panic(KFBSERVPanicCategory,KErrArgument);

		return KErrArgument;

		}

	// pixel size (used to be set in a separate call)

	TPckgBuf<TSize> size;

	TInt ret = aMessage.Read(2, size);

	if (ret != KErrNone)

		{

		return ret;

		}

	if(size().iHeight <=  0 || size().iWidth < 0)

		{

		aMessage.Panic(KFBSERVPanicCategory,KErrArgument);

		return KErrArgument;

		}

	iTopLevelStore->FontStore()->iKPixelHeightInTwips = size().iHeight;

	iTopLevelStore->FontStore()->iKPixelWidthInTwips = size().iWidth;

	if (aInTwips)

		{

		return iTopLevelStore->FontStore()->FontHeightInTwips(typefaceindex,fontsize);

		}

	else

		{

		return iTopLevelStore->FontStore()->FontHeightInPixels(typefaceindex,fontsize);

		}

	}

#ifdef _DEBUG

//aRet is used in debug builds to allow the server to know if the call was successful.

//On success there should be no panics from out of memory testing, since memory

//may have been genuinely allocated.

void CFontBitmapServer::ProcMessage(const RMessage2& aMessage, TInt aSession, TInt& aRet)

#else

void CFontBitmapServer::ProcMessage(const RMessage2& aMessage, TInt aSession)

#endif

	{

	TInt ret=KErrNone;

	TBool clientPanicRequired = EFalse;

#ifdef _DEBUG

	TInt num=0;

#endif

	switch (aMessage.Function())

		{

	case EFbsMessShutdown:

		CActiveScheduler::Stop();

		break;

	case EFbsMessNumTypefaces:

		ret=iTopLevelStore->FontStore()->NumTypefaces();

		break;

	case EFbsMessTypefaceSupport:

		ret = HandleMesgTypefaceSupport(aMessage, clientPanicRequired);

		break;

	case EFbsMessFontHeightInTwips:

		ret = HandleMesgFontHeight(aMessage, ETrue);

		break;

	case EFbsMessFontHeightInPixels:

		ret = HandleMesgFontHeight(aMessage, EFalse);

		break;

	case EFbsMessSetPixelHeight:

		iTopLevelStore->FontStore()->iKPixelWidthInTwips=aMessage.Int0();

		iTopLevelStore->FontStore()->iKPixelHeightInTwips=aMessage.Int1();

		break;

#ifdef _DEBUG

	case EFbsMessDefaultAllocFail:

		num=aMessage.Int0();

		if(num) __UHEAP_FAILNEXT(num);

		else __UHEAP_RESET;

		break;

	case EFbsMessDefaultMark:

		__UHEAP_MARK;

		break;

	case EFbsMessDefaultMarkEnd:

		num=aMessage.Int0();

		if(num) __UHEAP_MARKENDC(num);

		else __UHEAP_MARKEND;

		break;

	case EFbsMessUserAllocFail:

		num=aMessage.Int0();

		if(num) __RHEAP_FAILNEXT(iTopLevelStore->Heap(),num);

		else __RHEAP_RESET(iTopLevelStore->Heap());

		break;

	case EFbsMessUserMark:

		__RHEAP_MARK(iTopLevelStore->Heap());

		break;

	case EFbsMessUserMarkEnd:

		num=aMessage.Int0();

		if(num) __RHEAP_MARKENDC(iTopLevelStore->Heap(),num);

		else __RHEAP_MARKEND(iTopLevelStore->Heap());

		break;

#endif

	case EFbsMessHeapCheck:

		iTopLevelStore->Heap()->Check();

		User::Heap().Check();

		break;

	case EFbsMessSetDefaultGlyphBitmapType:

		iTopLevelStore->FontStore()->SetDefaultBitmapType((TGlyphBitmapType)aMessage.Int0());

		break;

	case EFbsMessGetDefaultGlyphBitmapType:

		ret = iTopLevelStore->FontStore()->DefaultBitmapType();

		break;

	case EFbsMessFontNameAlias:

		TRAP(ret, iTopLevelStore->SetFontNameAliasL(aMessage));

		break;

	case EFbsMessGetHeapSizes:

		TRAP(ret, GetHeapSizesL(aMessage));

		break;

	case EFbsMessDefaultLanguageForMetrics:

		iTopLevelStore->SetDefaultLanguageForMetrics(aMessage);

		break;

	case EFbsCompress:

		iTopLevelStore->BackgroundCompression()->CompressAll();

		break;

	case EFbsMessRegisterLinkedTypeface:

		{

		TPckgBuf<TLinkedTypefaceSpecificationArgs> buf;

		ret=aMessage.Read(0,buf);

		if (ret==KErrNone)

			{

			//Id used by original font linking; now unused.

			TInt id;

			ret=iTopLevelStore->FontStore()->CreateLinkedTypeface(buf(),aSession,id);

			}

		}

		break;

	case EFbsMessFetchLinkedTypeface:

			{

			TBuf<KMaxTypefaceNameLength> name;

			ret = aMessage.GetDesLength(0);

			if (ret < 0) 

				break;

			if (ret > KMaxTypefaceNameLength)

				{

				clientPanicRequired = ETrue;

				ret = KErrTooBig;

				break;

				}

			ret = aMessage.Read(0,name);

			TLinkedTypefaceSpecificationArgs spec;

			spec.iName = name;

			if (ret==KErrNone)

				{

				TRAP(ret, iTopLevelStore->FontStore()->GetLinkedTypefaceL(spec));

				if (ret == KErrNone)

					{

					TPckgBuf<TLinkedTypefaceSpecificationArgs> specArgs = spec;					

					ret = aMessage.Write(2,specArgs);

					}

				}

			}

		break;

		case EFbsMessUpdateLinkedTypeface:

			{

			TPckgBuf<TLinkedTypefaceSpecificationArgs> buf;

			ret=aMessage.Read(0,buf);

			if (ret==KErrNone)

				{

				TRAP(ret, iTopLevelStore->FontStore()->UpdateLinkedTypefaceL(buf()));

				}

			}

		break;

	}

	if (clientPanicRequired)

		{

		aMessage.Panic(KFBSERVPanicCategory,ret);

		}

	else

		{

		if(!aMessage.IsNull())

			{

			aMessage.Complete(ret);

			}		

		}

#ifdef _DEBUG

	aRet=ret;

#endif	

	}

/**

Returns the current sizes of the FBServ default heap, the heap for large bitmaps, 

and the heap for small bitmaps.

Not supported in release builds.

@internalComponent

@test

@param aMessage Encapsulates references to integers supplied by the caller, which will on return contain the sizes of the default heap, heap for small bitmaps, and heap for large bitmaps.

@leave KErrNotSupported when used in release mode.

*/

#ifdef _DEBUG

void CFontBitmapServer::GetHeapSizesL(const RMessage2& aMessage)

	{

	TPckgBuf<THeapSizes> data;

	TInt defaultHeapSize;

	TInt smallBmpHeapSize;		

	TInt bigBmpHeapSize;		

	User::Heap().AllocSize(defaultHeapSize);

	bigBmpHeapSize = iTopLevelStore->iLargeBitmapChunk.Size();

	iTopLevelStore->Heap()->AllocSize(smallBmpHeapSize);

	data().iDefault = defaultHeapSize;

	data().iBig = bigBmpHeapSize;

	data().iSmall = smallBmpHeapSize;

	aMessage.WriteL(0, data);

	}

#else

void CFontBitmapServer::GetHeapSizesL(const RMessage2&)

	{

	User::Leave(KErrNotSupported);	

	}	

#endif

CFontObject::CFontObject(CFontStore* aFontStore):

	CObject(),

	iAddressPointer(NULL),

	iFontStore(aFontStore)

	{

	}

CFontObject::~CFontObject()

	{

	if (AccessCount()==1)

		Dec();

	iFontStore->ReleaseFont(iAddressPointer);

	}

// CBitmapObject constructor - takes ownership of aBmp

CBitmapObject::CBitmapObject(CFbTop& aFbTop, CBitwiseBitmap* aBmp):

	CObject(),

	iFbTop(&aFbTop),

	iAddressPointer(aBmp)

	{

	__ASSERT_DEBUG(iAddressPointer, User::Invariant());

	}

/** Second-phase constructor of reference counting objects for bitmaps.

Adds the CBitmapObject to the bitmap object container and, if it is not a

replacement for a dirty bitmap, assigns a server-wide handle to it and adds

it to the server's bitmap index. When a replacement bitmap is attached to

the corresponding dirty bitmap with a call to SetCleanBitmap(), then it is

assigned the same server-wide handle as the bitmap to be replaced.

@param aReplacement If ETrue the bitmap is being created as a replacement

	for a bitmap being made dirty by a resize or compress operation.

@internalComponent

*/

void CBitmapObject::ConstructL(TBool aReplacement)

	{

	iFbTop->iBitmapCon->AddL(this);

	if (!aReplacement)

		{

		iHandle = reinterpret_cast<TInt>(this);

		while (iFbTop->iBitmapObjectIndex.FindInOrder(this, Compare) != KErrNotFound)

			++iHandle;

		User::LeaveIfError(iFbTop->iBitmapObjectIndex.InsertInOrder(this, Compare));

		}

	}

void CleanupBitmapObject(TAny* aPtr)

	{

	CBitmapObject* ptr = static_cast<CBitmapObject*>(aPtr);	

	ptr->Close();

	}

/** Create a reference counting object for a new bitmap.

@param aFbTop Reference to the CFbTop singleton.

@param aBmp Bitmap to be attached to the new reference counting object.

	The bitmap must have been pushed on the clean-up stack and it will be

	popped out of the stack by this function. Ownership will be transferred

	to the reference counting object.

@param aReplacement If ETrue the bitmap is being created as a replacement

	for a bitmap being made dirty by a resize or compress operation.

@internalComponent

*/

CBitmapObject* CBitmapObject::NewL(CFbTop& aFbTop, CBitwiseBitmap* aBmp, TBool aReplacement)

	{

	CBitmapObject* bmpObj = new(ELeave) CBitmapObject(aFbTop, aBmp);

	CleanupStack::Pop(aBmp); // aBmp is owned now by bmpObj

	TCleanupItem bitmapObjectCleanupItem(CleanupBitmapObject, bmpObj);

	CleanupStack::PushL(bitmapObjectCleanupItem);

	bmpObj->ConstructL(aReplacement);

	CleanupStack::Pop(bmpObj);

	return bmpObj;

	}

CBitmapObject::~CBitmapObject()

	{

	iFbTop->BackgroundCompression()->RemoveFromCompressionQueue(this);

	// the associated clean bitmap object cannot possibly be now in the background compression queue

	if (iHandle)

		{

		if (Owner() == NULL)

			{

			TInt index = iFbTop->iBitmapObjectIndex.FindInOrder(this, Compare);

			if (index != KErrNotFound)

				{

				if (iCleanBitmap)

					iFbTop->iBitmapObjectIndex[index] = iCleanBitmap;

				else

					iFbTop->iBitmapObjectIndex.Remove(index);

				}

			}

		if (iCleanBitmap != NULL)

			{

			iCleanBitmap->SetOwner(NULL);

			iCleanBitmap->Close();

			}

		}

	delete iAddressPointer;

	}

void CBitmapObject::SetCleanBitmap(CBitmapObject* aNewBmpObj)

	{

	__ASSERT_DEBUG(iHandle, User::Invariant());

	__ASSERT_DEBUG(iCleanBitmap == NULL, User::Invariant());

	__ASSERT_DEBUG(aNewBmpObj->Owner() == NULL, User::Invariant());

	__ASSERT_DEBUG(aNewBmpObj->iHandle == 0, User::Invariant());

	__ASSERT_DEBUG(aNewBmpObj->iCleanBitmap == NULL, User::Invariant());

	iCleanBitmap = aNewBmpObj;

	aNewBmpObj->SetOwner(this);

	aNewBmpObj->iHandle = iHandle;

	iAddressPointer->iSettings.SetDirtyBitmap();

	aNewBmpObj->iAddressPointer->Extra()->iSerialNumber = iAddressPointer->Extra()->iSerialNumber;

	aNewBmpObj->iAddressPointer->Extra()->iTouchCount = iAddressPointer->Extra()->iTouchCount + 1;

	}

void CBitmapObject::Close()

	{

	if (iCleanBitmap != NULL && Owner() != NULL && AccessCount() == 2)

		{

		static_cast<CBitmapObject*>(Owner())->iCleanBitmap = iCleanBitmap;

		iCleanBitmap->SetOwner(Owner());

		iHandle = 0;

		Dec();

		}

	CObject::Close();

	}

TInt CBitmapObject::Compare(const CBitmapObject& aBmpObj1, const CBitmapObject& aBmpObj2)

	{

	return aBmpObj1.iHandle - aBmpObj2.iHandle;

	}

TInt CBitmapObject::Compare(const TInt* aHandle, const CBitmapObject& aBmpObj)

	{

	return *aHandle - aBmpObj.iHandle;

	}

// CSharedBitmapObject constructor - takes ownership of aBmp and aKey

CSharedBitmapObject::CSharedBitmapObject(CFbTop& aFbTop, CBitwiseBitmap* aBmp, TDesC* aKey):

	CBitmapObject(aFbTop, aBmp),

	iKey(aKey),

	iNext(NULL)

	{