/****************************************************************************

**

** 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 "hbthemeserver_symbian_p_p.h"

#include "hbthemeserverutils_p.h"

#include "hbmemorymanager_p.h"

#include "hbiconsource_p.h"

#include "hbthemeindex_p.h"

#include "hbthemeutils_p.h"

#include "hbsharedmemorymanager_p.h"

#include "hbtypefaceinfodatabase_p.h"

#include <QHash>

#include <QImage>

#include <QSharedMemory>

#include <QDebug>

#include <QProcess>

#include <QFile>

#include <QFileInfo>

#include <QPainter>

#include <QSettings>

#include <QSizeF>

#include <e32property.h>

#include <e32base.h>

#include <e32svr.h>

#include <centralrepository.h>

#include "hbpixmapiconprocessor_p.h"

#include "hbpixmapiconimpl_p.h"

#include "hblayeredstyleloader_p.h"

#include "hbmemoryutils_p.h"

#include "hbdeviceprofiledatabase_p.h"

#include "hbthemesystemeffect_p.h"

#ifdef HB_SGIMAGE_ICON

#include "hbsgimagerenderer_p.h"

#endif

// 5 MB GPU cache size

#define GPU_CACHE_SIZE 0x500000

// 5 MB  CPU cache size

#define CPU_CACHE_SIZE 0x500000

static const TInt KThemeName = 0;

bool HbThemeServerPrivate::gpuGoodMemoryState = true;

// This is used as parent theme always regardless of the active theme

//**********************************

//HbThemeServerPrivate

//**********************************

/**

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

 */

HbThemeServerPrivate * HbThemeServerPrivate::NewL(CActive::TPriority aActiveObjectPriority)

{

    HbThemeServerPrivate* self = new(ELeave) HbThemeServerPrivate(aActiveObjectPriority);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

}

/**

ConstructL

 */

void HbThemeServerPrivate::ConstructL()

{

    TInt err = RProperty::Define(KServerUid3, KThemeName, RProperty::ELargeText);

    if ( err != KErrAlreadyExists ) {

        User::LeaveIfError( err );

    }

    TInt error = iThemeProperty.Attach(KServerUid3, KThemeName );

    User::LeaveIfError(error);

    // Store the active theme name in a member string

    iCurrentThemeName = HbThemeUtils::getThemeSetting(HbThemeUtils::CurrentThemeSetting);    

    if (iCurrentThemeName.isEmpty()) {

        iCurrentThemeName = HbThemeUtils::defaultTheme().name;

    }

    // Cache ROM theme(name)s

    QString romPath = "Z:\\resource\\hb\\themes\\icons\\";

    QDir dir(romPath);

    romThemeNames = dir.entryList(QDir::Dirs);

    // Resolve the path of the current theme

    // Open index file to prevent uninstallation of the active theme

    if (!openCurrentIndexFile()) {

        // theme doesn't exist activate default theme

        iCurrentThemeName = HbThemeUtils::defaultTheme().name;

        resolveThemePath(iCurrentThemeName, iCurrentThemePath);

    }

    cache = 0;

    cssCache = 0;

    QT_TRY {

        //Create the Icon cache

        cache = new HbIconDataCache();

        //Create the CSS cache

        cssCache = new HbCache();

    } QT_CATCH(const std::bad_alloc &badalloc) {

        delete cache;

        delete cssCache;

        qt_symbian_exception2LeaveL(badalloc);

    }

    setMaxGpuCacheSize(GPU_CACHE_SIZE);

    setMaxCpuCacheSize(CPU_CACHE_SIZE);

#if defined(HB_SGIMAGE_ICON) || defined(HB_NVG_CS_ICON)    

    renderMode = EHWRendering;

#else

    renderMode = ESWRendering;

#endif

    // Process base theme index, it is used as parent index also when the current theme is something else

    QString basePath;

    resolveThemePath(HbThemeUtils::getThemeSetting(HbThemeUtils::BaseThemeSetting), basePath);

    // Process operator theme indexes

    QString operatorName = HbThemeUtils::getThemeSetting(HbThemeUtils::OperatorNameSetting);

    if (!operatorName.isEmpty()) {

        QString operatorPath;

        operatorPath.append(KOperatorCPath);

        operatorPath.append(operatorName);

        // Process operator Drive Z theme index

        QString operatorROMPath;

        operatorROMPath.append(KOperatorZPath);

        operatorROMPath.append(operatorName);

    }

    // Process current theme index

    // 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

    // Start the splash screen generator app.

    QProcess::startDetached("hbsplashgenerator.exe");

}

/**

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.

*/

HbThemeServerPrivate::HbThemeServerPrivate(CActive::TPriority aActiveObjectPriority)

    : CServer2( aActiveObjectPriority ), iWatcher(0)

{

    // Set up the listener to listen for Publish events

    TRAPD(err, iListener = CHbThemeChangeNotificationListener::NewL(*this));

    if (err) {

        qWarning( "HbThemeServerPrivate::HbThemeServerPrivate: CHbThemeChangeNotificationListener::NewL failed = %d", err );

    } else {

        TRAPD(err, iListener->startListeningL());

        if (err) {

             qWarning( "HbThemeServerPrivate::HbThemeServerPrivate: iListener->startListening failed = %d", err );

         }

    }    

}

/**

Destructor

 */

HbThemeServerPrivate::~HbThemeServerPrivate()

{

    delete cache;

    delete cssCache;

    cache = 0;      // so that HbThemeServerSession::~HbThemeServerSession can avoid using these pointers;

    cssCache = 0;   // it may be called inside HbThemeServerPrivate::~HbThemeServerPrivate

    TInt err = RProperty::Delete(KServerUid3, KNewThemeForThemeChanger);

    if(err != KErrNotFound) {

        User::LeaveIfError(err);

    }

    // Delete the listener for Publish/Subscribe

    delete iListener;

    // Delete file watcher

    if (iWatcher) {

        delete iWatcher;

    }

}

/*

 * Returns FALSE if file doesn't exist, TRUE otherwise

 */

bool HbThemeServerPrivate::openCurrentIndexFile()

{

    // Open index file to prevent uninstallation of the active theme

    if (!iCurrentThemePath.isEmpty() && iCurrentThemePath[0] != 'z' && 

        iCurrentThemePath[0] != 'Z' && iCurrentThemePath[0] != ':') {

        QString indexFileName;

        indexFileName.append(iCurrentThemePath);

        indexFileName.append("/index.theme");

        QFile currentIndexfile(indexFileName);

        if(!currentIndexfile.open(QIODevice::ReadOnly)) {

            qWarning()<< "HbSymbianThemeServer: No Index file found in the new theme, How did this happen ??";

            return false;

        } else {

            currentIndexfile.close();

            if (!iWatcher) {

                // Set up the file watcher for active theme changes

                TRAP_IGNORE(iWatcher = CHbThemeWatcher::NewL(*this));

            }

            // Start watching in case of mmc ejection

            if (iWatcher) {

                iWatcher->startWatchingL(indexFileName);

            }

        }

    }

    return true;

}

bool HbThemeServerPrivate::resolveThemePath(const QString &themeName, QString &themePath)

{

        themePath = ":\\themes\\icons\\hbdefault";

        return true;

    }

    if (!themeName.isEmpty()) {

        // Check for the theme's icon directory in different drives.

        // ROM is checked first and then phone memory and memory card drives.

        QString themeLookupPath = "Z:\\resource\\hb\\themes\\icons\\";

        if (romThemeNames.contains(themeName)) {

            themeLookupPath.append(themeName);    

            themePath = themeLookupPath;

            return true;

        }

        themeLookupPath.append(themeName);

        QString filename(themeLookupPath);

        filename.append("\\index.theme");

        QFile file;

        filename[0] = 'C';

        file.setFileName(filename);

        if (file.open(QIODevice::ReadOnly)) {

            themeLookupPath[0] = 'C';

            themePath = themeLookupPath;

            file.close();

            return true;

        }

        filename[0] = 'E';

        file.setFileName(filename);

        if (file.open(QIODevice::ReadOnly)) {

            themeLookupPath[0] = 'E';

            themePath = themeLookupPath;

            file.close();

            return true;

        }

        filename[0] = 'F';

        file.setFileName(filename);

        if (file.open(QIODevice::ReadOnly)) {

            themeLookupPath[0] = 'F';

            themePath = themeLookupPath;

            file.close();

            return true;

        }        

    }

    return false;

}

/**

Handles theme selection

*/

void HbThemeServerPrivate::HandleThemeSelection( const QString& themeName)

{

    //Make a copy for ourselves

    QString cleanThemeName = themeName.trimmed();

    iCurrentThemeName = cleanThemeName;    

    QDir path(cleanThemeName);

    if (!path.isAbsolute()) {

        // Resolve the path of the current theme

        resolveThemePath(iCurrentThemeName, iCurrentThemePath);

    }

    #ifdef THEME_INDEX_TRACES

    qDebug() << "ThemeIndex: theme change request, new theme =" << cleanThemeName.toUtf8();

    #endif

    // Open index file to prevent uninstallation of the active theme

    if (!openCurrentIndexFile()) {

        // theme doesn't exist activate default theme

        iCurrentThemeName = HbThemeUtils::defaultTheme().name;

        resolveThemePath(iCurrentThemeName, iCurrentThemePath);

    }

    // Process operator Drive C theme index

    QString operatorName = HbThemeUtils::getThemeSetting(HbThemeUtils::OperatorNameSetting);

    if (!operatorName.isEmpty()) {

        QString operatorPath;

        operatorPath.append(KOperatorCPath);

        operatorPath.append(operatorName);

    }

    // Process current theme index

    // Clear cached icons and session data

    clearIconCache();

    iSessionIter.SetToFirst();

    while(iSessionIter) {

        HbThemeServerSession &session = reinterpret_cast<HbThemeServerSession &>(*iSessionIter);

        session.ClearSessionData();

        iSessionIter++;

    }

    // TODO: fix parameter

    // Update settings and notify clients

}

/**

Creates a new session with the server.

*/

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

{

#ifdef THEME_SERVER_TRACES

    qDebug() << "HbThemeServerPrivate::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) HbThemeServerSession(const_cast<HbThemeServerPrivate*>(this));

}

/**

A utility function to panic the server.

*/

void HbThemeServerPrivate::PanicServer(TPixmapServPanic aPanic)

{

    _LIT(KTxtServerPanic, "Pixmap server panic");

    User::Panic(KTxtServerPanic, aPanic);

}

/**

 * HbThemeServerPrivate::insertIconCacheItem

 *

 * Inserts an icon-cache item along with its key into the icon-cache.

 */

bool HbThemeServerPrivate::insertIconCacheItem(const HbIconKey &key,  HbIconCacheItem* item)

{

    return (cache->insert(key, item));

}

/**

 * HbThemeServerPrivate::insertCssCacheItem

 *

 * Inserts a css-cache item along with its key into the css-cache.

 */

bool HbThemeServerPrivate::insertCssCacheItem(const QString& key,  HbCacheItem* item)

{

    return (cssCache->insert(key, item));

}

/**

 * HbThemeServerPrivate::iconCacheItem

 *

 * Retrieves a icon cache-item from the icon cache based on it's key.

 */

HbIconCacheItem * HbThemeServerPrivate::iconCacheItem(const HbIconKey &key , bool isMultiIconPiece)

{

    return(cache->getCacheItem(key, renderMode, isMultiIconPiece));

}

/**

 * HbThemeServerPrivate::cssCacheItem

 *

 * Retrieves a css-cache item from the css cache based on it's key.

 */

HbCacheItem * HbThemeServerPrivate::cssCacheItem(const QString &key)

{

    return(cssCache->cacheItem(key));

}

/**

 * HbThemeServerPrivate::clearIconCache

 *

 * Clears icon cache.

 */

void HbThemeServerPrivate::clearIconCache()

{

    cache->clear();

}

/**

 * HbThemeServerPrivate::clearCssCache

 *

 * Clears css cache.

 */

void HbThemeServerPrivate::clearCssCache()

{

    cssCache->clear();

}

/**

 * HbThemeServerPrivate::CleanupSessionIconItem

 *

 * Removes an icon cache-item from icon-cache based on it's key.

 */

void HbThemeServerPrivate::CleanupSessionIconItem(HbIconKey key)

{

    /*

        Don't call any HbIconDataCache functions if HbThemeServerPrivate has already deleted it,

         which happens when ThemeServer is closed before the client(s).

    */

    if (cache) {

        cache->remove(key);

    }

}

/**

 * HbThemeServerPrivate::IconTypeInCache

 *

 * Returns the Icon Format Type i.e SGIMAGE,NVG,SVG etc...if it is present in cache

 * else returns INVALID_FORMAT

 */

 HbIconFormatType HbThemeServerPrivate::IconTypeInCache( const HbIconKey &key ) const

{

    if ( key.filename.isEmpty() || !cache->contains(key) ) {

         return INVALID_FORMAT;

    }

    HbIconCacheItem* item = cache->value(key);

    if ( item->rasterIconData.type != INVALID_FORMAT ) {

        return item->rasterIconData.type;

    } else {

        return item->vectorIconData.type;

    }