src/hbservers/hbthemeserver/hbthemeserversymbian.cpp
changeset 0 16d8024aca5e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbservers/hbthemeserver/hbthemeserversymbian.cpp	Mon Apr 19 14:02:13 2010 +0300
@@ -0,0 +1,1496 @@
+/****************************************************************************
+**
+** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (developer.feedback@nokia.com)
+**
+** This file is part of the HbServers module of the UI Extensions for Mobile.
+**
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at developer.feedback@nokia.com.
+**
+****************************************************************************/
+
+#include "hbthemeserversymbian_p.h"
+#include "hbthemeserverutils_p.h"
+#include "hbmemorymanager_p.h"
+#include "hbiconsource_p.h"
+#include "hbthemeindex_p.h"
+#include "hbthemeutils_p.h"
+
+#include <QHash>
+#include <QImage>
+#include <QSettings>
+#include <QSharedMemory>
+#include <QDebug>
+#include <QProcess>
+#include <QFile>
+#include <QPainter>
+#include <QSizeF>
+#include <e32property.h>
+#include <e32base.h>
+#include <e32svr.h>
+#include "hbpixmapiconprocessor_p.h"
+#include "hbpixmapiconimpl_p.h"
+#include "hblayeredstyleloader_p.h"
+#include "hbmemoryutils_p.h"
+#include "hbdeviceprofiledatabase_p.h"
+// 5 MB GPU cache size
+#define GPU_CACHE_SIZE 0x500000
+
+// 5 MB  CPU cache size
+#define CPU_CACHE_SIZE 0x500000
+
+const TInt KThemeName = 0;
+
+
+
+static HbThemeServerSymbian *TheServer = 0;
+
+// This is used as parent theme always regardless of the active theme
+static const char *baseThemeName = "hbdefault";
+const int themeIndexFailed = -2; // error code to indicate failure in processing theme index
+
+//**********************************
+//HbThemeServerSymbian
+//**********************************
+/**
+Our server class - an active object - and therefore derived ultimately from CActive.
+It accepts requests from client threads and forwards
+them to the client session to be dealt with. It also handles the creation
+of the server-side client session.
+*/
+
+/**
+NewL
+ */
+HbThemeServerSymbian * HbThemeServerSymbian::NewL(CActive::TPriority aActiveObjectPriority)
+{
+    HbThemeServerSymbian* self = new(ELeave) HbThemeServerSymbian(aActiveObjectPriority);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(); // self
+    return self;
+}
+
+/**
+ConstructL
+ */
+void HbThemeServerSymbian::ConstructL()
+{
+    TInt err = RProperty::Define(KServerUid3, KThemeName, RProperty::ELargeText);
+    if ( err != KErrAlreadyExists ) {
+        User::LeaveIfError( err );
+    }
+    TInt error = iThemeProperty.Attach(KServerUid3, KThemeName );
+    User::LeaveIfError(error);
+    
+    QSettings settings(QLatin1String(ORGANIZATION), QLatin1String(THEME_COMPONENT));
+    // Store the active theme name in a member string
+    iCurrentThemeName = settings.value("currenttheme").toString();
+    
+    // HACK
+    if (iCurrentThemeName.isEmpty()) {
+        iCurrentThemeName = "sfblacktheme";
+    }
+    
+    // TODO: Get default theme name if current theme setting does not return theme name
+
+/*
+    if (iCurrentThemeName.isEmpty()) {
+        iCurrentThemeName = HbThemeUtils::defaultTheme();
+        settings.setValue("currenttheme", iCurrentThemeName); 
+        settings.sync();
+        TPtrC name(reinterpret_cast<const TUint16 *>(iCurrentThemeName.constData()));
+        iThemeProperty.Set(name);
+    }
+*/
+
+    // Resolve the drive letter of the current theme
+    resolveCurrentThemeDrive();
+    // Open index file to prevent uninstallation of the active theme
+    openCurrentIndexFile();
+
+    //Create the Icon cache
+    cache = new HbIconDataCache();
+    setMaxGpuCacheSize(GPU_CACHE_SIZE);
+    setMaxCpuCacheSize(CPU_CACHE_SIZE);
+    
+    //Create the CSS cache
+    cssCache = new HbCache();
+    
+    // Temporary hack for pre-loading app. background graphics in server startup to give more realistic
+    // results in performance tests. (Normally these graphics get loaded anyway when the first hb app is started.)
+#ifndef HB_NVG_CS_ICON
+    QProcess::startDetached("hbiconpreloader.exe");
+#endif
+    
+    // Process base theme index, it is used as parent index also when the current theme is something else
+    processThemeIndex(baseThemeName, QChar('Z'));
+    baseThemeIndexKey = themeIndexKey(baseThemeName, QChar('Z'));
+}
+
+/**
+Constructor takes the server priority value. 
+
+The server is an active object, and the priority value is the priority
+of this active object.
+
+It passes the priority value to the base class in the Ctor list.
+By default, the session is not sharable, which is what we want here
+so no second parameter is passed to the CServer2 constructor.
+*/
+HbThemeServerSymbian::HbThemeServerSymbian( CActive::TPriority aActiveObjectPriority )
+    : CServer2( aActiveObjectPriority ),
+      currentThemeDrive('Z') // Assume default theme is in ROM
+{
+    // Set server pointer in static variable
+    TheServer = this;
+}
+
+/**
+Destructor
+ */
+HbThemeServerSymbian::~HbThemeServerSymbian()
+{
+    delete cache;
+    delete cssCache;
+    cache = NULL;      // so that HbSymbianThemeServSession::~HbSymbianThemeServSession can avoid using these pointers;
+	cssCache = NULL;   // it may be called inside HbThemeServerSymbian::~HbThemeServerSymbian
+}
+
+HbThemeServerSymbian *HbThemeServerSymbian::Instance()
+{
+    return TheServer;
+}
+
+void HbThemeServerSymbian::openCurrentIndexFile()
+{
+    // Open index file to prevent uninstallation of the active theme
+    if (!iCurrentThemeName.isEmpty() && currentThemeDrive != 'Z') {
+        QString indexFileName;
+        indexFileName.append(currentThemeDrive);
+        indexFileName.append("\\resource\\hb\\themes\\icons\\");
+        indexFileName.append(iCurrentThemeName);
+        indexFileName.append("\\index.theme");
+
+        currentIndexfile.setFileName(indexFileName);
+        if(!currentIndexfile.open(QIODevice::ReadOnly)) {
+            qWarning()<< "HbSymbianThemeServer: No Index file found in the new theme, How did this happen ??";
+        }
+    }
+}
+
+void HbThemeServerSymbian::resolveCurrentThemeDrive()
+{
+    if (!iCurrentThemeName.isEmpty()) {
+        // Check for the theme's icon directory in different drives.
+        // ROM is checked first and then phone memory and memory card drives.
+
+        QString filename = "Z:\\resource\\hb\\themes\\icons\\";
+        filename.append(iCurrentThemeName);
+
+        if (QFile::exists(filename)) {
+            currentThemeDrive = 'Z';
+            return;
+        }
+    
+        filename[0] = 'C';
+        if (QFile::exists(filename)) {
+            currentThemeDrive = 'C';
+            return;
+        }
+
+        filename[0] = 'E';
+        if (QFile::exists(filename)) {
+            currentThemeDrive = 'E';
+            return;
+        }
+        
+        // Default to 'Z' if not found in any drive
+        currentThemeDrive = 'Z';
+    }
+}
+
+/**
+Creates a new session with the server.
+*/
+CSession2* HbThemeServerSymbian::NewSessionL(const TVersion& aVersion, const RMessage2& /*aMessage*/) const
+{
+#ifdef THEME_SERVER_TRACES 
+    qDebug() << "HbThemeServerSymbian::NewSessionL: entered";
+#endif    
+    // Check that the version is OK
+    TVersion v( KThemeServerMajorVersionNumber, KThemeServerMinorVersionNumber, KThemeServerBuildVersionNumber );
+    if (!User::QueryVersionSupported( v, aVersion ))
+        User::Leave( KErrNotSupported );  
+    // Create the session.
+    return new (ELeave) HbSymbianThemeServSession( const_cast<HbThemeServerSymbian*>(this) );
+}
+
+/**
+A utility function to panic the server.
+*/
+void HbThemeServerSymbian::PanicServer(TPixmapServPanic aPanic)
+{
+    _LIT(KTxtServerPanic, "Pixmap server panic");
+    User::Panic(KTxtServerPanic, aPanic);
+}
+
+/**
+ * HbThemeServerSymbian::insertIconCacheItem
+ * 
+ * Inserts an icon-cache item along with its key into the icon-cache.
+ */
+bool HbThemeServerSymbian::insertIconCacheItem ( const HbIconKey &key,  HbIconCacheItem* item )
+{
+    return (cache->insert(key, item));
+
+}
+
+/**
+ * HbThemeServerSymbian::insertCssCacheItem
+ * 
+ * Inserts a css-cache item along with its key into the css-cache.
+ */
+bool HbThemeServerSymbian::insertCssCacheItem ( const QString& key,  HbCacheItem* item )
+{
+    return (cssCache->insert(key, item));
+}
+
+/**
+ * HbThemeServerSymbian::iconCacheItem
+ * 
+ * Retrieves a icon cache-item from the icon cache based on it's key.
+ */
+HbIconCacheItem * HbThemeServerSymbian::iconCacheItem ( const HbIconKey &key , bool isMultiIconPiece )
+{
+    return(cache->getCacheItem(key, isMultiIconPiece));
+}
+
+/**
+ * HbThemeServerSymbian::cssCacheItem
+ * 
+ * Retrieves a css-cache item from the css cache based on it's key.
+ */
+HbCacheItem * HbThemeServerSymbian::cssCacheItem ( const QString &key)
+{
+    return(cssCache->cacheItem(key));
+}
+
+void HbThemeServerSymbian::insertIconDefaultSizeCacheItem(const QString &key, const QSizeF &item)
+{
+    iconDefaultSizes.insert(key, item);
+}
+
+QSizeF HbThemeServerSymbian::iconDefaultSizeCacheItem(const QString &key)
+{
+    return iconDefaultSizes.value(key);
+}
+
+/**
+ * HbThemeServerSymbian::clearIconCache
+ * 
+ * Clears icon cache.
+ */
+void HbThemeServerSymbian::clearIconCache()
+{
+    cache->clear();
+}
+
+/**
+ * HbThemeServerSymbian::clearCssCache
+ * 
+ * Clears css cache.
+ */
+void HbThemeServerSymbian::clearCssCache()
+{
+    cssCache->clear();
+}
+
+/**
+ * HbThemeServerSymbian::CleanupSessionIconItem
+ * 
+ * Removes an icon cache-item from icon-cache based on it's key.
+ */
+void HbThemeServerSymbian::CleanupSessionIconItem(HbIconKey key)
+{
+    /*
+	    Don't call any HbIconDataCache functions if HbThemeServerSymbian has already deleted it,
+	     which happens when ThemeServer is closed before the client(s).
+	*/
+    if(cache)
+        cache->remove(key); 
+}
+
+/**
+ * HbThemeServerSymbian::CleanupSessionCssItem
+ * 
+ * Removes a css cache-item from css-cache based on it's key.
+ */
+void HbThemeServerSymbian::CleanupSessionCssItem(QString key)
+{
+    /*
+	    Don't call any HbCache ( CssCache )  functions if HbThemeServerSymbian has already deleted it,
+	     which happens when ThemeServer is closed before the client(s).
+	*/
+    if(cssCache)
+        cssCache->remove(key); 
+}
+
+/**
+HbThemeServerSymbian::setMaxGpuCacheSize
+ */
+void HbThemeServerSymbian::setMaxGpuCacheSize(int size)
+{
+    cache->setMaxGpuCacheSize(size);
+}
+
+/**
+HbThemeServerSymbian::setMaxGpuCacheSize
+ */
+void HbThemeServerSymbian::setMaxCpuCacheSize(int size)
+{
+    cache->setMaxCpuCacheSize(size);
+}
+
+//Debug Code for Test Purpose
+#ifdef HB_ICON_CACHE_DEBUG
+int HbThemeServerSymbian ::cacheIconCount() const
+{
+    return cache->count();
+}
+
+int HbThemeServerSymbian::freeVectorMemory()
+{
+    return cache->freeVectorMemory();
+}
+
+int HbThemeServerSymbian::freeRasterMemory()
+{
+    return cache->freeRasterMemory();
+}
+
+int HbThemeServerSymbian::lastAddedRefCount()
+{
+    return cache->lastAddedRefCount();
+}
+
+int HbThemeServerSymbian::lastAddedItemMem()
+{
+    return cache->lastAddedItemMem();
+}
+
+int HbThemeServerSymbian::lastRemovedItemMem()
+{
+    return cache->lastRemovedItemMem();
+}
+
+int HbThemeServerSymbian::lastRemovedItemRfCount()
+{
+    return cache->lastRemovedItemRfCount();
+}
+
+bool HbThemeServerSymbian::enableCache(bool cacheIt)
+{
+    return cache->enableCache(cacheIt);
+}
+
+int HbThemeServerSymbian::cacheHitCount()
+{
+    return cache->cacheHitCount();
+}
+
+int HbThemeServerSymbian::cacheMissCount()
+{
+    return cache->cacheMissCount();
+}
+
+int HbThemeServerSymbian::serverHeapSize()
+{
+    TInt heapSize = 0; 
+    User::AllocSize(heapSize);
+    return heapSize;
+}
+
+void HbThemeServerSymbian::cleanVectorLRUList()
+{
+    cache->cleanVectorLRUList();
+}
+
+void HbThemeServerSymbian::cleanRasterLRUList()
+{
+    cache->cleanRasterLRUList();
+}
+
+int HbThemeServerSymbian::rasterLruCount()
+{
+    return cache->rasterLruCount();
+}
+
+int HbThemeServerSymbian::vectorLruCount()
+{
+    return cache->vectorLruCount();
+}
+#endif
+
+/**
+ * HbThemeServerSymbian::doCleanup()
+ * 
+ * This function releases shared memory occupied by css-resources whose reference count is zero,
+ * so that subsequent css-requests could be fulfilled by the server. Those css-files whose reference
+ * count are zero, are already appended to the LRU list maintained by the css-cache. Since these resources
+ * are not being referred to by any application, they can be removed from the cache and corresponding
+ * shared memory can be freed up.
+ */
+void HbThemeServerSymbian::doCleanup() 
+{
+    HbThemeServerUtils::cleanupUnusedCss(cssCache);
+}
+
+QString HbThemeServerSymbian::themeIndexKey(const QString &theme, const QChar drive)
+{
+    QString key(drive);
+    key.append(':');
+    key.append(theme);
+    return key;
+}
+
+void HbThemeServerSymbian::processThemeIndex(const QString &theme, const QChar drive)
+{
+    QString filename(drive);
+    filename.append(":\\resource\\hb\\themes\\");
+    filename.append(theme);
+    filename.append(".themeindex");
+    
+    QFile indexFile(filename);
+
+    bool indexOK = false;
+
+    if (indexFile.open(QIODevice::ReadOnly)) {
+
+        indexOK = true;
+
+        GET_MEMORY_MANAGER(HbMemoryManager::SharedMemory);
+
+        qint64 byteSize = indexFile.size();
+        
+        int offset = manager->alloc(byteSize);
+        if (offset >= 0) {        
+            // Read the theme index in the shared chunk
+            char *address = HbMemoryUtils::getAddress<char>(HbMemoryManager::SharedMemory, offset);
+
+            #ifdef THEME_INDEX_TRACES
+            qDebug() <<  "ThemeIndex: Reading themeindex for theme" << theme.toUtf8();
+            #endif
+
+            indexFile.read(address, byteSize);
+            indexFile.close();
+
+            #ifdef THEME_INDEX_TRACES
+            qDebug() <<  "ThemeIndex: Reading themeindex for theme" << theme.toUtf8() << "... Done!";
+            #endif
+
+            // Verify theme index contents if it is not located in ROM,
+            // so that it does not have over-indexing offsets which might
+            // crash all the clients trying to read from it.
+            
+            if (drive != 'Z') {
+                #ifdef THEME_INDEX_TRACES
+                qDebug() <<  "ThemeIndex: Validating themeindex for theme" << theme.toUtf8();
+                #endif
+
+                HbThemeIndex index(address);
+                int count = index.itemCount();
+                if (count * sizeof(HbThemeIndexItem) >= byteSize) {
+                    indexOK = false;
+                } else {
+                    const HbThemeIndexItem *itemArray = index.itemArray();
+                    int stringAreaStart = reinterpret_cast<int>(index.stringAreaStart()) - reinterpret_cast<int>(address);
+
+                    for (int i = 0; i<count; i++) {
+                        const HbThemeIndexItem *item = itemArray++;
+                        if (item->iconnameOffset < stringAreaStart || item->iconnameOffset >= byteSize ||
+                            item->folderOffset < stringAreaStart || item->folderOffset >= byteSize ||
+                            item->extOffset < stringAreaStart || item->extOffset >= byteSize ||
+                            item->mirroredExtOffset != -1 &&
+                            (item->mirroredExtOffset < stringAreaStart || item->mirroredExtOffset >= byteSize)) {
+                            
+                            indexOK = false;
+                            break;
+                        }
+                    }
+                    
+                }
+
+                #ifdef THEME_INDEX_TRACES
+                qDebug() <<  "ThemeIndex: Validating themeindex for theme" << theme.toUtf8() << "... Done!";
+                #endif
+            }
+
+            if (indexOK) {
+                // Clear some old indexes so the chunk does not get filled completely if
+                // the user switches themes a lot.
+                removeOldThemeIndexes();            
+                // Store offset to the index in chunk
+                lastThemeIndexKey = themeIndexKey(theme, drive);
+                themeIndexes.insert(lastThemeIndexKey, offset);                
+            } else {
+                // If the index contents were not OK, remove the index from the chunk
+                manager->free(offset);
+            }
+        }
+    }
+
+
+    if (!indexOK) {
+        // If there was a problem with the index, store error code so the index loading is not retried.
+        themeIndexes.insert(themeIndexKey(theme, drive), themeIndexFailed);
+    }
+}
+
+void HbThemeServerSymbian::removeOldThemeIndexes()
+{
+    // This function removes the previously used theme indexes from the shared chunk.
+    // The last index is not removed, because some clients might be still using it.
+    // Also the base theme index is never removed.
+    
+    QMap<QString, int>::const_iterator i = themeIndexes.constBegin();
+
+    GET_MEMORY_MANAGER(HbMemoryManager::SharedMemory);
+
+    while (i != themeIndexes.constEnd()) {
+        if (i.value() != themeIndexFailed && i.key() != baseThemeIndexKey && i.key() != lastThemeIndexKey) {
+            QString key = i.key();
+            // Advance iterator before removing the current item from the map.
+            i++;
+
+            // Remove the theme index table from the shared chunk and offset map
+            manager->free(i.value());        
+            themeIndexes.remove(key);
+        } else {
+            i++;
+        }
+    }
+}
+
+void HbThemeServerSymbian::getThemeIndexTables(ThemeIndexTables &tables)
+{
+    QString key = themeIndexKey(iCurrentThemeName, currentThemeDrive);
+    int offset = themeIndexes.value(key, -1);
+
+    // If the index has failed earlier, do not retry
+    if (offset == themeIndexFailed) {
+        return;
+    }
+
+    if (offset == -1) {
+        processThemeIndex(iCurrentThemeName, currentThemeDrive);
+    }
+    
+    tables.tables[0] = themeIndexes.value(key, -1);
+    tables.drives[0] = currentThemeDrive;
+
+    // Set base theme table as parent table if the current theme is not the base theme
+    if (tables.tables[0] >= 0 && iCurrentThemeName != baseThemeName) {
+        QString base(baseThemeName);
+        tables.tables[1] = themeIndexes.value(themeIndexKey(base, 'Z'), -1);
+        tables.drives[1] = 'Z';
+    }    
+}
+
+
+//**********************************
+//HbSymbianThemeServSession
+//**********************************
+/**
+This class represents a session with the  server.
+Functions are provided to respond appropriately to client messages.
+*/
+
+/**
+Constructor
+*/
+HbSymbianThemeServSession::HbSymbianThemeServSession(HbThemeServerSymbian *aServer):
+        iServer(aServer)        
+{
+
+}
+
+/**
+Destructor
+*/
+HbSymbianThemeServSession::~HbSymbianThemeServSession()
+{
+    //Clean up the icon related session-specific info
+  QList<HbIconKey>::const_iterator itEnd( sessionData.constEnd() );
+    for ( QList<HbIconKey>::const_iterator iter = sessionData.constBegin();
+            iter != itEnd;
+            ++iter ) {
+                iServer->CleanupSessionIconItem(*iter);
+    }   
+    //clean up css related session-specific info
+    QList<QString>::const_iterator iterEnd( sessionCssData.constEnd() );
+    for ( QList<QString>::const_iterator iter = sessionCssData.constBegin();
+            iter != iterEnd;
+            ++iter ) {
+                iServer->CleanupSessionCssItem(*iter);
+        }
+    
+    sessionData.clear();
+    sessionCssData.clear();
+}
+
+TIconParams HbSymbianThemeServSession::ReadMessageAndRetrieveParams(const RMessage2& aMessage)
+{
+    TInt deslen = aMessage.GetDesLength(0);
+    TIconParams params;
+    TPckg<TIconParams> paramPckg(params);
+    // Copy the client's descriptor data into our buffer.
+    aMessage.ReadL(0, paramPckg, 0);
+    return params;
+}
+
+/**
+Services a client request.
+*/
+void HbSymbianThemeServSession::ServiceL(const RMessage2& aMessage)
+{    
+#ifdef THEME_SERVER_TRACES 
+    qDebug() << "Just entered HbSymbianThemeServSession::ServiceL";
+#endif    
+    
+    TRAPD(err, DispatchMessageL(aMessage));
+    aMessage.Complete(err);
+    QString er;
+    er.setNum(err);
+    
+#ifdef THEME_SERVER_TRACES 
+    qDebug() << "completed DispatchMessageL error code is " + er;
+#endif    
+    
+}
+
+/**
+Called by ServiceL()
+
+It tests the function code and then delegates to
+the appropriate function.
+*/
+void HbSymbianThemeServSession::DispatchMessageL(const RMessage2& aMessage)
+{    
+#ifdef THEME_SERVER_TRACES 
+    qDebug() << "Just entered HbSymbianThemeServSession::DispatchMessageL";
+#endif       
+    
+    switch (aMessage.Function()) {
+    case EStyleSheetLookup:
+        HandleStyleSheetLookupL(aMessage);
+        break;   
+    case EWidgetMLLookup:
+        HandleWidgetMLLookupL(aMessage);
+        break;
+    case EDeviceProfileOffset:
+        HandleDeviceProfilesReqL(aMessage);
+        break;
+    case ESecondaryCacheOffset:
+        HandleSecondaryCacheOffsetReqL(aMessage);
+        break;
+    case EEffectAdd: // FALLTHROUGH
+    case EEffectLookupFilePath:
+        HandleEffectAddAndFileLookupL(aMessage);
+        break;
+
+    case EIconLookup:
+        GetSharedIconInfoL(aMessage);
+        break;
+        
+    case EIconDefaultSize:
+        GetSharedIconDefaultSizeInfoL(aMessage);
+        break;
+
+    case EThemeSelection:
+        HandleThemeSelectionL(aMessage);
+        break;
+        
+    case EMultiPieceIcon: 
+        GetSharedMultiIconInfoL(aMessage);
+        break;
+
+        //Debug Code for Test Purpose
+#ifdef HB_ICON_CACHE_DEBUG
+        case ECacheIconCount: {
+            TInt count = iServer->cacheIconCount();             
+            TPckg<TInt> out(count);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case ERasterMemLimit: {
+            TInt params = 0;
+            TPckg<TInt> paramPckg(params);      
+            aMessage.ReadL(0, paramPckg, 0);
+            
+            iServer->setMaxGpuCacheSize(params);
+            break;  
+        }
+        case EVectorMemLimit: {
+            TInt params = 0;
+            TPckg<TInt> paramPckg(params);      
+            aMessage.ReadL(0, paramPckg, 0);            
+            iServer->setMaxCpuCacheSize(params); 
+            break;
+        }
+        case EFreeRasterMem: {
+            TInt freeRastMem = iServer->freeRasterMemory();
+            TPckg<TInt> out(freeRastMem);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case EFreeVectorMem: {
+            TInt freeVectMem = iServer->freeVectorMemory();
+            TPckg<TInt> out(freeVectMem);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case ELastAddedItemMem: {
+            TInt lAddItemMem = iServer->lastAddedItemMem();
+            TPckg<TInt> out(lAddItemMem);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case ELastRemovedItemMem: {
+            TInt lRemItemMem = iServer->lastRemovedItemMem();
+            TPckg<TInt> out(lRemItemMem);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case ELastAddedItemRefCount: {
+            TInt lAddItemRfCnt = iServer->lastAddedRefCount();
+            TPckg<TInt> out(lAddItemRfCnt);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case EEnableCache: {
+            TBool params = 0;
+            TPckg<TBool> paramPckg(params);     
+            aMessage.ReadL(0, paramPckg, 0);
+            TBool success = iServer->enableCache(params);
+            TPckg<TBool> out(success);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case ECacheHit: {
+            int cacheHitCnt = iServer->cacheHitCount();
+            TPckg<TInt> out(cacheHitCnt);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case ECacheMiss: {
+            int cacheMissCnt = iServer->cacheMissCount();
+            TPckg<TInt> out(cacheMissCnt);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case ECleanRasterLRUList: {
+            iServer->cleanRasterLRUList();
+            break;
+        }
+        case ECleanVectorLRUList: {
+            iServer->cleanVectorLRUList();
+            break;
+        }
+        case EGpuLruCount: {
+            TInt rasterMissCount = iServer->rasterLruCount();
+            TPckg<TInt> out(rasterMissCount);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case ECpuLruCount: {
+            TInt vectorMissCount = iServer->vectorLruCount();
+            TPckg<TInt> out(vectorMissCount);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        case EServerHeap: {
+            TInt heapSize = iServer->serverHeapSize();
+            TPckg<TInt> out(heapSize);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        
+        case ELastRemovedItemRefCount: {
+            TInt lastItemRemovedRefCount = iServer->lastRemovedItemRfCount();
+            TPckg<TInt> out(lastItemRemovedRefCount);
+            aMessage.WriteL(1, out);
+            break;
+        }
+        
+        case EServerHeapMarkStart: {
+            __UHEAP_MARK;
+            break;
+        }
+
+        case EServerHeapMarkEnd: {
+            __UHEAP_MARKEND;
+            break;
+        }
+
+        case EServerAllocFail: {
+            //TODO
+            break;
+        }
+        
+        case EServerAllocReset: {
+            //TODO
+            break;
+        }
+#endif
+        case EUnloadIcon: {
+            TIconParams params = ReadMessageAndRetrieveParams(aMessage);
+            QString filename((QChar*)params.fileName.Ptr(),params.fileName.Length());
+            QColor color = GetColorFromRgba(params.rgba,params.colorflag);
+            HbIconKey key(filename, QSizeF(params.width, params.height), 
+                        (Qt::AspectRatioMode)params.aspectRatioMode,
+                        (QIcon::Mode)params.mode, params.mirrored, color);
+            iServer->CleanupSessionIconItem(key);
+            sessionData.removeOne(key);
+            break;
+
+        }
+
+        case EThemeIndex: {
+            // Using leave here because this function does not return a value
+            ThemeIndexTables tables;
+            iServer->getThemeIndexTables(tables);
+            TPckg<ThemeIndexTables> out(tables);
+            aMessage.WriteL(0, out);
+            break;
+        }
+
+        // This is an example of a request that we know about, but don't support.
+        // We cause KErrNotSupported to be returned to the client.
+        default:
+            PanicClient(aMessage, EBadRequest);
+            break;
+    }
+#ifdef THEME_SERVER_TRACES 
+    qDebug() << "Leave HbSymbianThemeServSession::DispatchMessageL";
+#endif  
+    
+}
+
+/**
+ * HandleStyleSheetLookupL
+ */
+void HbSymbianThemeServSession::HandleStyleSheetLookupL(const RMessage2& aMessage)
+{
+    if (aMessage.GetDesLength(0) == 0) {    
+#ifdef THEME_SERVER_TRACES 
+        qDebug() << "Empty Filename";
+#endif         
+        return;
+    }
+
+    TBuf<256> fileName;
+    aMessage.ReadL(0, fileName, 0);
+    TBuf<256> layerPriorityBuf;
+    aMessage.ReadL(1,layerPriorityBuf,0);
+    TLex lex(layerPriorityBuf);
+    TInt priorityValue;
+    lex.Val(priorityValue);
+
+    HbLayeredStyleLoader::LayerPriority layerPriority = ( HbLayeredStyleLoader::LayerPriority) priorityValue;
+
+    QString cssFileName((QChar*)fileName.Ptr(), fileName.Length()); 
+    HbSharedStyleSheetInfo offsetInfo;
+    HbCacheItem* cssCacheItem = iServer->cssCacheItem(cssFileName);
+    bool insertKeyIntoSessionList = false;
+    if ( cssCacheItem ) {
+        //The item was found in the cache and reference count was incremented
+        insertKeyIntoSessionList = true;
+        offsetInfo.offset = cssCacheItem->offset;
+    }
+    else{
+            bool tryAgain = false;
+            do{
+                offsetInfo.offset = HbThemeServerUtils::getSharedStylesheet(cssFileName,layerPriority);
+                if(offsetInfo.offset >= 0){
+                    HbCacheItem *cssItem =  new HbCacheItem(offsetInfo.offset,0,cssFileName);
+                    insertKeyIntoSessionList = iServer->insertCssCacheItem(cssFileName,cssItem);
+                    if(layerPriority == HbLayeredStyleLoader::Priority_Core && cssItem->refCount == 1) {
+                        // This will make sure the requested stylesheet will always remain
+                        // in the primary and secondary cache.
+                        cssItem->incrementRefCount();
+                    }
+                    break;
+                }else if(offsetInfo.offset == OUT_OF_MEMORY_ERROR && tryAgain == false){
+                    iServer->doCleanup();
+                    tryAgain = true;
+                }else if(offsetInfo.offset == OUT_OF_MEMORY_ERROR && tryAgain == true){
+                    //try only once to free up memory, else offset remains -2
+                    tryAgain = false;
+            }
+      }while(tryAgain);
+    }
+    if(insertKeyIntoSessionList) {
+        //The session will only keep track of cssFiles that were either successfully found or were
+        //successfully inserted in the cache. 
+        sessionCssData.append(cssFileName);
+        }
+    TPckg<HbSharedStyleSheetInfo> data(offsetInfo);
+    aMessage.WriteL(2, data);
+}
+
+/**
+ * HandleWidgetMLLookUp
+ */
+void HbSymbianThemeServSession::HandleWidgetMLLookupL(const RMessage2& aMessage)
+{
+    if (aMessage.GetDesLength(0) == 0) {
+        return;
+    }
+
+    TBuf<256> fileName;
+    aMessage.ReadL(0, fileName, 0);
+    TBuf<256> layoutName;
+    aMessage.ReadL(1, layoutName, 0);
+    TBuf<256> sectionName;
+    aMessage.ReadL(2, sectionName, 0);
+
+    QString wmlFileName((QChar*)fileName.Ptr(), fileName.Length());
+    QString layout((QChar*)layoutName.Ptr(), layoutName.Length());
+    QString section((QChar*)sectionName.Ptr(), sectionName.Length());
+
+    HbSharedWMLInfo offsetInfo;
+    offsetInfo.offset = HbThemeServerUtils::getSharedLayoutDefinition(wmlFileName,layout,section);
+    TPckg<HbSharedWMLInfo> data(offsetInfo);
+    aMessage.WriteL(3, data);
+}
+
+
+/**
+ * Handle DeviceProfiles Request.
+ */
+void HbSymbianThemeServSession::HandleDeviceProfilesReqL(const RMessage2& aMessage)
+{
+    HbDeviceProfileInfo offsetInfo;
+    HbDeviceProfileDatabase *deviceProfileDatabase = HbDeviceProfileDatabase::instance(HbMemoryManager::SharedMemory);
+    if(deviceProfileDatabase) {
+    	offsetInfo.offset = deviceProfileDatabase->deviceProfilesOffset();
+    } else {
+    	offsetInfo.offset = -1;
+    }
+    TPckg<HbDeviceProfileInfo> data(offsetInfo);
+    aMessage.WriteL(0, data);
+}
+
+/**
+ * Handle SecondaryCacheOffset Request.
+ */
+void HbSymbianThemeServSession::HandleSecondaryCacheOffsetReqL(const RMessage2& aMessage)
+{
+    SecondaryCacheInfo offsetInfo;
+    offsetInfo.offset = HbThemeServerUtils::sharedCacheOffset();
+    TPckg<SecondaryCacheInfo> data(offsetInfo);
+    aMessage.WriteL(0, data);
+}
+
+/**
+ * HandleEffectAddAndFileLookupL
+ */
+void HbSymbianThemeServSession::HandleEffectAddAndFileLookupL(const RMessage2& aMessage)
+{
+    TInt fileNameLength = aMessage.GetDesLength(0);
+    if (fileNameLength == 0) {
+        return;
+    }
+
+    TFileName fileName;
+    aMessage.ReadL(0, fileName, 0);
+    QString effFileName((QChar*)fileName.Ptr(), fileName.Length()); 
+    HbSharedEffectInfo offsetInfo;
+    offsetInfo.offset = HbThemeServerUtils::getSharedEffect(effFileName);
+    TPckg<HbSharedEffectInfo> data(offsetInfo);
+    aMessage.WriteL(1, data);
+}
+
+void HbSymbianThemeServSession::GetSharedIconDefaultSizeInfoL(const RMessage2 &aMessage)
+{
+    TIconParams params = ReadMessageAndRetrieveParams(aMessage);
+
+    // Need to be allocated from heap or the leave in the end causes a crash
+    QScopedPointer<QString> filenamePtr(new QString((QChar*)params.fileName.Ptr(), params.fileName.Length()));
+    
+    // See if the icon's default size has been queried already earlier and
+    // can be found stored in the hash.
+
+    QSizeF defSize = iServer->iconDefaultSizeCacheItem(*filenamePtr.data());
+                    
+    if (!defSize.isValid()) {
+        defSize = RetrieveIconDefaultSize(*filenamePtr.data());
+
+        // If the default size was retrieved, insert it in the hash for further lookups
+        if (defSize.isValid()) {
+            iServer->insertIconDefaultSizeCacheItem(*filenamePtr.data(), defSize);
+        }
+    }
+    
+    // Return the default size back to the client if it was resolved
+    if (defSize.isValid()) {    
+        TPckg<QSizeF> returnData(defSize);
+        aMessage.WriteL(1, returnData);
+#ifdef THEME_SERVER_TRACES 
+        qDebug() << "Completed aMessage.WriteL";
+#endif
+    }
+    // Otherwise leave with error code
+    else {
+        User::Leave(KErrNotFound);
+    }
+}
+
+QSizeF HbSymbianThemeServSession::RetrieveIconDefaultSize(const QString &filename)
+{
+    QSizeF ret;
+
+    // Get icon source, previous icons sources are cached so if accessed again,
+    // they don't need to be loaded and parsed from a file always.
+    HbIconSource *source = HbThemeServerUtils::getIconSource(filename);
+    if (source) {
+        ret = source->defaultSize();
+    }
+
+    return ret;
+}
+
+/**
+ * GetSharedIconInfoL
+ */
+void HbSymbianThemeServSession::GetSharedIconInfoL(const RMessage2& aMessage)
+{
+    HbSharedIconInfo data;
+    TIconParams params = ReadMessageAndRetrieveParams(aMessage);
+
+    QString filename((QChar*)params.fileName.Ptr(), params.fileName.Length());
+    QColor color = GetColorFromRgba(params.rgba,params.colorflag);
+    HbIconKey key(filename, QSizeF(params.width, params.height), 
+                    (Qt::AspectRatioMode)params.aspectRatioMode,
+                    (QIcon::Mode)params.mode, params.mirrored, color);
+                    
+    HbIconCacheItem* cacheItem = iServer->iconCacheItem(key);
+    bool insertKeyIntoSessionList = false;  
+    if ( cacheItem ) {
+        insertKeyIntoSessionList = true; //The item was found in the cache and ref count was incremented
+        if(cacheItem->rasterIconData.type != INVALID_FORMAT ) {
+            data = cacheItem->rasterIconData;
+        } else if( cacheItem->vectorIconData.type != INVALID_FORMAT ) {
+            data = cacheItem->vectorIconData;
+        } else if (cacheItem->blobIconData.type != INVALID_FORMAT) {
+            data = cacheItem->blobIconData;
+        } else {
+            data.type = INVALID_FORMAT;
+        } 
+    } else {
+        QString format = HbThemeServerUtils::formatFromPath( key.filename );
+        cacheItem = HbIconCacheItemCreator::createCacheItem( key, 
+                          (HbIconLoader::IconLoaderOptions)params.options, format);
+        if( cacheItem) {
+            if( cacheItem->rasterIconData.type != INVALID_FORMAT) {
+                data = cacheItem->rasterIconData;
+            } else if( cacheItem->vectorIconData.type != INVALID_FORMAT ) {
+                data = cacheItem->vectorIconData;
+            } else if (cacheItem->blobIconData.type != INVALID_FORMAT) {
+                data = cacheItem->blobIconData;
+            } else {
+                data.type = INVALID_FORMAT;
+            }
+            if( data.type != INVALID_FORMAT ) {
+                insertKeyIntoSessionList = iServer->insertIconCacheItem(key, cacheItem);
+                if (!insertKeyIntoSessionList ) {
+                    FreeDataFromCacheItem(cacheItem);
+                    delete cacheItem; // do delete the item after gpu/cpu memory is freed
+                    data.type = INVALID_FORMAT;
+                }
+            }
+        }
+    }
+    if(insertKeyIntoSessionList) {
+        //The session will only keep track of icons that were either successfully found or were
+        //successfully inserted in the cache.       
+        sessionData.append(key);
+    }
+    // create dshared pixmap info from HbIconCacheItem  
+    TPckg<HbSharedIconInfo> pixdata(data);
+    aMessage.WriteL(1, pixdata);
+    
+#ifdef THEME_SERVER_TRACES 
+    qDebug() << "Completed  aMessage.WriteL";
+#endif
+}
+
+/**
+ * handleThemeSelectionL
+ */
+void HbSymbianThemeServSession::HandleThemeSelectionL(const RMessage2& aMessage)
+{
+    TInt deslen = aMessage.GetDesLength(0);
+    RBuf buffer;
+    buffer.CreateL(deslen);
+    buffer.CleanupClosePushL();
+    aMessage.ReadL(0, buffer, 0);
+    if (buffer.Length() == 0) {
+        User::Leave(ENonNumericString);
+    }
+    QString newTheme((QChar*)buffer.Ptr(), buffer.Length());
+    CleanupStack::PopAndDestroy(); // close the buffer
+
+    QString cleanThemeName = newTheme.trimmed();    
+    
+    if (cleanThemeName == iServer->iCurrentThemeName) {
+        // Theme did not change, return.
+        return;
+    }
+    // ToDo: Validate the theme name somehow
+
+    iServer->iCurrentThemeName = cleanThemeName;
+    
+    // Resolve the drive letter of the current theme
+    iServer->resolveCurrentThemeDrive();
+
+    iServer->currentIndexfile.close();
+    // Open index file to prevent uninstallation of the active theme
+    iServer->openCurrentIndexFile();
+
+    QSettings settings(QLatin1String(ORGANIZATION), QLatin1String(THEME_COMPONENT));    
+    settings.setValue("currenttheme", cleanThemeName); 
+    settings.sync();
+    TPtrC name(reinterpret_cast<const TUint16 *>(cleanThemeName.constData()));
+    TInt err = iServer->iThemeProperty.Set(name);
+    User::LeaveIfError(err);
+}
+
+/**
+ * Panics the client
+ */
+void HbSymbianThemeServSession::PanicClient(const RMessage2& aMessage, TInt aPanic) const
+{
+    _LIT(KTxtServer, "Theme server");
+    aMessage.Panic(KTxtServer, aPanic);
+}
+
+QColor HbSymbianThemeServSession::GetColorFromRgba(TUint32 aRgba,bool aColorFlag) 
+{
+    QColor color;
+    if(aColorFlag){
+        color.setRgba((QRgb)aRgba);
+    }
+    return color;
+}
+
+/**
+ * HbThemeServerSymbian::GetSharedMultiIconInfoL
+  Creates a consolidated icon of the frame item pieces , 
+  if failed to do so creates a icons of the pieces provided 
+  there is enough space in the cache and shared memory.
+ */
+void HbSymbianThemeServSession::GetSharedMultiIconInfoL(const RMessage2& aMessage)
+{
+    HbSharedIconInfo stitchedData;
+    stitchedData.type = INVALID_FORMAT;
+    QVector<HbIconKey> insertedKeys;
+    TMultiIconSymbParams params = ReadMessageAndRetrieveMultiIconParams(aMessage);
+
+    QColor color = GetColorFromRgba(params.rgba, params.colorflag);
+    QString iconId((QChar*)params.multiPartIconId.Ptr(), params.multiPartIconId.Length());
+    QString fullPath((QChar*)params.multiPartIconList[0].Ptr(), params.multiPartIconList[0].Length());
+    int index = fullPath.lastIndexOf("/");
+    fullPath = fullPath.left(index + 1);
+    iconId.prepend(fullPath);
+    HbIconKey finalIconKey(iconId,
+                   (QSizeF)params.size,
+                   (Qt::AspectRatioMode)params.aspectRatioMode,
+                   (QIcon::Mode)params.mode,
+                   (bool)params.mirrored,
+                   color);
+
+    if (!IconInfoFromSingleIcon( finalIconKey, stitchedData)) {
+        HbMultiIconParams frameItemParams;
+        int noOfPieces = 1;
+        if (iconId.contains("_3PV",Qt::CaseInsensitive) || iconId.contains("_3PH",Qt::CaseInsensitive)) {
+            noOfPieces = 3;
+        } else if (iconId.contains("_9P",Qt::CaseInsensitive)) {
+            noOfPieces = 9;
+        }
+
+        frameItemParams.multiPartIconId = iconId;
+        frameItemParams.aspectRatioMode = (Qt::AspectRatioMode)params.aspectRatioMode;
+        frameItemParams.colorflag = params.colorflag;
+        frameItemParams.mirrored = (bool)params.mirrored;
+        frameItemParams.options = params.options;
+        frameItemParams.rgba = params.rgba;
+        frameItemParams.mode = (QIcon::Mode)params.mode;
+        frameItemParams.size = (QSizeF)params.size;
+        frameItemParams.color = color;
+        for (int i = 0; i < noOfPieces; i++) {
+            frameItemParams.multiPartIconData.pixmapSizes[i] = (QSize &)params.pixmapSizes[i];
+        }
+
+        for (int i = 0; i < noOfPieces; i++) {
+            frameItemParams.multiPartIconData.targets[i] = (QRect &)params.targets[i];
+        }
+
+        for (int i = 0; i < noOfPieces; i++) {
+            frameItemParams.multiPartIconData.sources[i] = (QRect &)params.sources[i];
+        }
+
+        for (int i = 0; i < noOfPieces; i++) {
+            QString pieceName((QChar*)params.multiPartIconList[i].Ptr(), params.multiPartIconList[i].Length());
+            frameItemParams.multiPartIconList.append(pieceName);                
+        }
+
+        IconInfoFromMultiParts(frameItemParams, noOfPieces, finalIconKey, stitchedData);
+    }
+
+     // create dshared pixmap info from HbIconCacheItem  
+     TPckg<HbSharedIconInfo> pixdata(stitchedData);
+     aMessage.WriteL(1,pixdata);
+}
+
+/**
+ * HbThemeServerSymbian::IconInfoFromSingleIcon
+  Checks for the cacheItem for a given key, if found gets the data relevant of the cacheItem.
+ */
+
+bool HbSymbianThemeServSession::IconInfoFromSingleIcon(HbIconKey key,
+                HbSharedIconInfo &stitchedData)
+{
+    stitchedData.type = INVALID_FORMAT;
+    HbIconCacheItem * cacheItem = iServer->iconCacheItem(key, true);
+    if (cacheItem) {
+        GetDataFromCacheItem(cacheItem, stitchedData );
+        return true; //The item was found in the cache and ref count was incremented
+    } 
+    return false;
+}
+    
+/**
+ * HbThemeServerSymbian::createCacheItemData
+  Creates a cacheItem of the given key and insert the item in to the list 
+  else free the data allocated for the cache.
+ */
+    
+bool HbSymbianThemeServSession::CreateCacheItemData(HbIconKey key, int options ,HbSharedIconInfo &data, bool isMultiIcon)
+{
+    bool insertKeyIntoSessionList = false;
+    data.type = INVALID_FORMAT;
+    QString format = HbThemeServerUtils::formatFromPath( key.filename );
+    HbIconCacheItem * cacheItemOfPiece = iServer->iconCacheItem(key, isMultiIcon);
+    if (cacheItemOfPiece) {
+        GetDataFromCacheItem(cacheItemOfPiece, data);
+        insertKeyIntoSessionList = true;
+    }
+    else {
+    cacheItemOfPiece = HbIconCacheItemCreator::createCacheItem(key, 
+                                            (HbIconLoader::IconLoaderOptions)options, format, isMultiIcon);
+    if (cacheItemOfPiece) {
+        GetDataFromCacheItem(cacheItemOfPiece, data);
+        if (data.type != INVALID_FORMAT) {
+            insertKeyIntoSessionList = iServer->insertIconCacheItem(key, cacheItemOfPiece);
+            if (!insertKeyIntoSessionList) {
+                //if insertion failed free the memory
+                FreeDataFromCacheItem(cacheItemOfPiece);
+                delete cacheItemOfPiece; // do delete the item after gpu/cpu memory is freed
+                data.type = INVALID_FORMAT;
+                }
+            }
+        }
+    }
+    return insertKeyIntoSessionList;
+}
+
+/**
+ * HbThemeServerSymbian::CreateStichedIconInfoOfParts
+  Creates a consolidated icon of the availble piece iconInfo.
+ */
+
+bool HbSymbianThemeServSession::CreateStichedIconInfoOfParts(QVector<HbSharedIconInfo> dataForParts,HbMultiIconParams params,
+                                                            HbIconKey &finalIconKey, HbSharedIconInfo &stitchedData)
+{
+    bool insertKeyIntoSessionList = false;
+    stitchedData.type = INVALID_FORMAT;
+    QString format = HbThemeServerUtils::formatFromPath( params.multiPartIconList[0] );
+    
+    HbIconCacheItem * cacheItem = HbIconCacheItemCreator::createMultiPieceCacheItem(finalIconKey, (HbIconLoader::IconLoaderOptions)params.options, format,dataForParts, params);
+    if( cacheItem) {
+        if( cacheItem->rasterIconData.type == INVALID_FORMAT) {
+            return false;
+        }
+    }    
+
+    stitchedData = cacheItem->rasterIconData;
+    if (stitchedData.type != INVALID_FORMAT) {
+        insertKeyIntoSessionList = iServer->insertIconCacheItem(finalIconKey, cacheItem);
+        if (!insertKeyIntoSessionList) {
+                //if insertion failed free the memory
+            FreeDataFromCacheItem(cacheItem);
+            delete cacheItem; // do delete the item after gpu/cpu memory is freed
+            stitchedData.type = INVALID_FORMAT;
+        }
+    }
+
+    return insertKeyIntoSessionList;
+}
+
+/**
+ * HbThemeServerSymbian::iconInfoFromMultiParts
+  Creates a shared IconInfo of the piece files of a frame item and 
+  tries to create a stiched icon of the same.
+ */
+
+void HbSymbianThemeServSession::IconInfoFromMultiParts(const HbMultiIconParams &frameItemParams,
+                const int noOfPieces,
+                HbIconKey &stichedKey,
+                HbSharedIconInfo &stitchedData)
+{
+    QVector<HbIconKey> keysInserted;
+    QVector<HbSharedIconInfo> dataForParts;
+    bool insertKeyIntoSessionList = false;
+    bool failedToCreateParts = false;
+    QString format;
+
+
+    for(int i = 0; i < noOfPieces;i++) {
+        HbSharedIconInfo data;
+        bool iconPieceMirrored = false;
+        HbIconKey key(frameItemParams.multiPartIconList.at(i), frameItemParams.multiPartIconData.pixmapSizes[i], (Qt::AspectRatioMode)stichedKey.aspectRatioMode, (QIcon::Mode)stichedKey.mode, iconPieceMirrored, stichedKey.color);
+        insertKeyIntoSessionList = IconInfoFromSingleIcon(key, data);
+        if (!insertKeyIntoSessionList) {
+            insertKeyIntoSessionList = CreateCacheItemData(key, frameItemParams.options, data, true);
+        }
+        if ((data.type == INVALID_FORMAT) || (!insertKeyIntoSessionList)) {
+            failedToCreateParts = true;
+            break;
+        } else {
+            //The session will only keep track of icons that were either successfully found or were
+            //successfully inserted in the cache.
+            keysInserted.append(key);
+            dataForParts.append(data);
+        }
+    }//end of for
+    
+    int dataPartCount = dataForParts.count();
+    if ((failedToCreateParts) || (dataPartCount != noOfPieces)|| (!insertKeyIntoSessionList)) {
+        //atLeast one of the icon did'nt get constructed , so move the cached piece icons to unused state and return
+    QVector<HbIconKey>::const_iterator itEnd( keysInserted.constEnd() );
+            for ( QVector<HbIconKey>::const_iterator iter = keysInserted.constBegin();
+                    iter != itEnd;
+                    ++iter ) {
+                        iServer->CleanupSessionIconItem(*iter);
+            }          
+        stitchedData.type = INVALID_FORMAT;
+        return;
+    } 
+// Create a stitched icon of the available piece shared iconinfos
+    if ((dataPartCount == noOfPieces)&& (!failedToCreateParts) &&         
+        (CreateStichedIconInfoOfParts(dataForParts, frameItemParams, stichedKey, stitchedData))) {
+            sessionData.append(stichedKey);
+        }
+    
+    QVector<HbIconKey>::const_iterator itEnd( keysInserted.constEnd() );
+       for ( QVector<HbIconKey>::const_iterator iter = keysInserted.constBegin();
+               iter != itEnd;
+               ++iter ) {
+                   iServer->CleanupSessionIconItem(*iter);
+       }   
+}
+
+/**
+ * HbThemeServerSymbian::FreeDataFromCacheItem
+ *Frees data from the cached item when insertion to the list fails.
+ */
+void HbSymbianThemeServSession::FreeDataFromCacheItem(HbIconCacheItem* cacheItem)
+{
+    GET_MEMORY_MANAGER(HbMemoryManager::SharedMemory)
+    if ( cacheItem->rasterIconData.type != INVALID_FORMAT ) {
+        switch(cacheItem->rasterIconData.type) {
+        case PIC :
+            manager->free(cacheItem->rasterIconData.picData.offset);
+        break;
+        case NVG :
+            manager->free(cacheItem->rasterIconData.nvgData.offset);
+        break;
+        case OTHER_SUPPORTED_FORMATS :
+            manager->free(cacheItem->rasterIconData.pixmapData.offset);
+        break;
+        default:
+        break;
+        }
+    }
+    if ( cacheItem->vectorIconData.type != INVALID_FORMAT ) {
+        switch(cacheItem->vectorIconData.type) {
+        case PIC :
+            manager->free(cacheItem->vectorIconData.picData.offset);
+        break;
+        case NVG :
+            manager->free(cacheItem->vectorIconData.nvgData.offset);
+        break;
+        case OTHER_SUPPORTED_FORMATS :
+            manager->free(cacheItem->vectorIconData.pixmapData.offset);
+        break;
+        default:
+        break;
+        }
+    }
+    if (cacheItem->blobIconData.type == BLOB) {
+        manager->free(cacheItem->blobIconData.blobData.offset);
+    }
+}
+
+/**
+ * HbThemeServerSymbian::GetDataFromCacheItem
+ * Gets data from the cache Item.
+ */
+
+// Code to get data from the cached item
+void HbSymbianThemeServSession::GetDataFromCacheItem(HbIconCacheItem* cacheItem, HbSharedIconInfo &data ) const
+{
+    if ( cacheItem) {
+        if ( cacheItem->rasterIconData.type != INVALID_FORMAT) {
+            data = cacheItem->rasterIconData;
+        } else if ( cacheItem->vectorIconData.type != INVALID_FORMAT ) {
+            data = cacheItem->vectorIconData;
+        } else if (cacheItem->blobIconData.type != INVALID_FORMAT) {
+            data = cacheItem->blobIconData;
+        } else {
+            data.type = INVALID_FORMAT;
+        }
+    }
+}
+
+/**
+ * HbThemeServerSymbian::ReadMessageAndRetrieveMultiIconParams
+ * 
+ * Reads all the information from client.
+ */
+    
+TMultiIconSymbParams HbSymbianThemeServSession::ReadMessageAndRetrieveMultiIconParams(const RMessage2& aMessage)
+{
+    TInt deslen = aMessage.GetDesLength(0);
+    TMultiIconSymbParams params;
+    TPckg<TMultiIconSymbParams> paramPckg(params);
+    // Copy the client's descriptor data into our buffer.
+    aMessage.ReadL(0,paramPckg,0);
+    return params;
+}