--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/fontstore/src/ShaperCache.CPP	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,165 @@
+/*
+* 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: 
+*
+*/
+
+
+#include <fntstore.h>
+#include <gdi.h>
+#include "FNTSTD.H"
+#include <graphics/shapeimpl.h>
+#include "ShaperCache.H"
+
+//class COpenFontShaperCacheEntry;
+COpenFontShaperCacheEntry* COpenFontShaperCacheEntry::New(RHeap* aHeap)
+	{
+	COpenFontShaperCacheEntry* entry = (COpenFontShaperCacheEntry*)aHeap->Alloc(sizeof(COpenFontShaperCacheEntry));
+	if (!entry)
+		return NULL;
+	new(entry) COpenFontShaperCacheEntry();	
+	return entry;
+	}
+	
+COpenFontShaperCacheEntry* COpenFontShaperCacheEntry::New(RHeap* aHeap, CShaper::TInput aInput, TShapeHeader* aShapeHeader)
+	{
+	COpenFontShaperCacheEntry* entry = (COpenFontShaperCacheEntry*)aHeap->Alloc(sizeof(COpenFontShaperCacheEntry));
+	if (!entry)
+		return NULL;
+	new(entry) COpenFontShaperCacheEntry(aHeap,aInput);
+	TInt ret=entry->Construct(aInput,aShapeHeader);
+	if (ret!=KErrNone)
+		{
+		aHeap->Free(entry);
+		return NULL;
+		}
+	return entry;
+	}
+
+TInt COpenFontShaperCacheEntry::Construct(CShaper::TInput aInput,TShapeHeader* aShapeHeader)
+	{
+	// Get some memory for the shape header
+	iShapeHeader = (TShapeHeader*)( iHeap->Alloc(
+	sizeof(TShapeHeader) + (aShapeHeader->iGlyphCount * 10) + 4));
+	if (iShapeHeader==NULL)
+		{
+		return KErrNoMemory;
+		}
+	Mem::Copy(iShapeHeader, aShapeHeader,sizeof(TShapeHeader) + (aShapeHeader->iGlyphCount * 10) + 4);
+	
+	// Get some memory for the input text
+	iText = (TUint16*)(iHeap->Alloc(sizeof(TUint16)*aInput.iText->Length()));
+	if (iText==NULL)
+		{
+		iHeap->Free(iShapeHeader);
+		return KErrNoMemory;
+		}
+	TUint16* inputText = (TUint16*)aInput.iText->Ptr();
+	Mem::Copy(iText, inputText, sizeof(TUint16)*aInput.iText->Length());
+	return KErrNone;
+	}
+	
+/**
+Utility function used to free memory taken up by an entry to the cache
+@internalTechnology
+**/
+void COpenFontShaperCacheEntry::Delete(RHeap* aHeap,COpenFontShaperCacheEntry* aCacheEntry)
+	{
+	if (!aCacheEntry->IsSentinel())
+		{
+		aHeap->Free(aCacheEntry->iShapeHeader);
+		aHeap->Free(aCacheEntry->iText);
+		//now free the THandleCount list
+		if (aCacheEntry->iHandleRefList)
+			{
+			THandleCount* ptr=aCacheEntry->iHandleRefList;
+			while (ptr)
+				{
+				THandleCount* next=ptr->iNext;
+				aHeap->Free(ptr);
+				ptr=next;
+				}
+			aCacheEntry->iHandleRefList=NULL;
+			}
+		aHeap->Free(aCacheEntry);
+		}
+	}
+
+//function to update the ref count for a particular session handle	
+TInt COpenFontShaperCacheEntry::IncRefCount(TInt aSessionHandle)
+	{
+	//get pointer to start of the linked list
+	THandleCount* ptr=iHandleRefList;
+	THandleCount* last=NULL;
+	//loop through existing entries first
+	while (ptr)
+		{
+		if (ptr->iSessionHandle==aSessionHandle)
+			{
+			ptr->iRefCount++;
+			return KErrNone;			
+			}
+		last=ptr;
+		ptr=ptr->iNext;
+		}
+	// now we have reached the end of the list or we start with empty list
+	THandleCount* handle=(THandleCount*)iHeap->Alloc(sizeof(THandleCount));
+	if (!handle)
+		return KErrNoMemory;
+	new (handle)THandleCount(aSessionHandle);
+	//if the list is initially empty
+	if (!last)
+		iHandleRefList=handle;
+	else
+		last->iNext=handle;
+	iHandleRefCount++;
+	return KErrNone;	
+	}
+
+//function to decrement the ref count for a particular session handle
+//aReset here is used to immediately reset the handleCount reference to zero
+//and remove from the entry(this will be called in the case when a client session dies
+//Note that once the ref count reaches zero the THandleCount entry is automatically
+//removed from the list
+TInt COpenFontShaperCacheEntry::DecRefCount(TInt aSessionHandle,TBool aReset)
+	{
+	//get pointer to start of the linked list
+	THandleCount* ptr=iHandleRefList;
+	THandleCount* last=NULL;
+	//loop through existing entries first
+	while (ptr)
+		{
+		if (ptr->iSessionHandle==aSessionHandle)
+			{
+			if (aReset || ptr->iRefCount==1)
+				{
+				THandleCount* next=ptr->iNext;
+				//delete from first item
+				if (last==NULL)
+					iHandleRefList=next;
+				else
+					last->iNext=next;
+				iHeap->Free(ptr);
+				iHandleRefCount--;			
+				return KErrNone;
+				}
+			ptr->iRefCount--;
+			return KErrNone;			
+			}
+		last=ptr;	
+		ptr=ptr->iNext;
+		}
+	return KErrNotFound;	
+	}	
+