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

**

** 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 HbCore 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 "hboogmwatcher_sym_p.h"

#include "hbiconloader_p.h"

#include <QApplication>

#include <QSymbianEvent>

#include <e32debug.h>

#include <w32std.h>

// Constants copied from goommonitorplugin.hrh.  Including the file is

// not possible because older versions of the file do not have the

// constants and thus would cause a build break with older Symbian

// envs which is not desirable.

#define KGoomMemoryLowEvent 0x10282DBF

#define KGoomMemoryGoodEvent 0x20026790

static QCoreApplication::EventFilter prevEventFilter;

static bool goomEventFilter(void *message, long *result)

{

    QSymbianEvent *symEvent = static_cast<QSymbianEvent *>(message);

    if (symEvent->type() == QSymbianEvent::WindowServerEvent) {

        const TWsEvent *wsEvent = symEvent->windowServerEvent();

        switch (wsEvent->Type()) {

        case KGoomMemoryLowEvent:

            RDebug::Printf("HbOogmWatcher: Goom memory low event");

            HbOogmWatcherPrivate::d_ptr(HbOogmWatcher::instance())->graphicsMemoryLow();

            break;

        case KGoomMemoryGoodEvent:

            RDebug::Printf("HbOogmWatcher: Goom memory good event");

            HbOogmWatcherPrivate::d_ptr(HbOogmWatcher::instance())->graphicsMemoryGood();

            break;

        case EEventWindowVisibilityChanged:

            if (wsEvent->VisibilityChanged()->iFlags & TWsVisibilityChangedEvent::ENotVisible) {

                HbIconLoader::global()->handleForegroundLost();

            }

            break;

        }

    }

}

HbOogmWatcherPrivate::HbOogmWatcherPrivate()

{

    // Standard app event filtering is not suitable here, must use

    // setEventFilter to catch the symbian events.

    prevEventFilter = qApp->setEventFilter(goomEventFilter);

}