homescreenapp/widgetplugins/hsclockwidgetplugin/src/hsclocksettingsnotifier_symbian.cpp
/*
* Copyright (c) 2008 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: Clock widget
*
*/
#include <QTimer>
#include "hsclocksettingsnotifier_symbian.h"
#include <bacntf.h> // CEnvironmentChangeNotifier
namespace
{
const char ANALOG[] = "analog";
const char DIGITAL[] = "digital";
const char TIME12[] = "TIME12";
const char TIME24[] = "TIME24";
}
/*!
\class HsClockSettingsNotifierType
\ingroup group_HsClockSettingsNotifierplugin
\brief Implementation for the observation of the system clock settings (analog/digital).
*/
/*!
Constructor
*/
HsClockSettingsNotifier::HsClockSettingsNotifier(QObject *parent)
: QObject(parent),
mDateTimeNotifier(0)
{
mClockFormat = clockFormatString();
mTimeFormat = timeFormatString();
createObserver();
}
/*!
Destructor.
*/
HsClockSettingsNotifier::~HsClockSettingsNotifier()
{
delete mDateTimeNotifier;
}
/*!
Returns the clock format ('analog'/'digital')
*/
QString HsClockSettingsNotifier::clockFormat() const
{
return mClockFormat;
}
/*!
Returns the time format ('12'/'24')
*/
QString HsClockSettingsNotifier::timeFormat() const
{
return mTimeFormat;
}
/*!
Callback function to receive system settings changes.
*/
TInt HsClockSettingsNotifier::EnvironmentChanged( TAny* aSelf )
{
HsClockSettingsNotifier* self = static_cast<HsClockSettingsNotifier*>(aSelf);
if ( self ){
TInt change = self->mDateTimeNotifier->Change();
if ( change & EChangesLocale ) {
self->onSettingsChanged();
}
}
return KErrNone;
}
/*!
Creates CEnvironmentChangeNotifier object to listen system settings changes.
*/
void HsClockSettingsNotifier::createObserver()
{
if ( !mDateTimeNotifier ){
mDateTimeNotifier = CEnvironmentChangeNotifier::NewL(
CActive::EPriorityLow,
TCallBack( EnvironmentChanged, this ) );
mDateTimeNotifier->Start();
}
}
/*!
Reads clock format from system locale settings
*/
QString HsClockSettingsNotifier::clockFormatString() const
{
TLocale locale;
TClockFormat clockFormat = locale.ClockFormat();
if ( clockFormat==EClockAnalog ) {
return QString(ANALOG);
} else {
return QString(DIGITAL);
}
}
/*!
Reads time format from system locale settings
*/
QString HsClockSettingsNotifier::timeFormatString() const
{
TLocale locale;
TTimeFormat timeFormat = locale.TimeFormat();
if ( timeFormat==ETime12 ) {
return QString(TIME12);
} else {
return QString(TIME24);
}
}
/*!
*/
void HsClockSettingsNotifier::onSettingsChanged()
{
QString clockFormat = clockFormatString();
QString timeFormat = timeFormatString();
if ( clockFormat != mClockFormat || timeFormat != mTimeFormat ) {
mClockFormat = clockFormat;
mTimeFormat = timeFormat;
emit settingsChanged(mClockFormat, mTimeFormat);
}
}