1 /*

     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Clock widget

    15 *

    16 */

    17 

    18 #include <QTimer>

    19 #include "hsclocksettingsnotifier_symbian.h"

    20 

    21 #include <bacntf.h> // CEnvironmentChangeNotifier

    22 

    23 

    24 namespace

    25 {

    26     const char ANALOG[] = "analog";

    27     const char DIGITAL[] = "digital";

    28     const char TIME12[] = "TIME12";

    29     const char TIME24[] = "TIME24";

    30 }

    31 

    32 /*!

    33     \class HsClockSettingsNotifierType

    34     \ingroup group_HsClockSettingsNotifierplugin

    35     \brief Implementation for the observation of the system clock settings (analog/digital). 

    36 

    37 */

    38 

    39 

    40 /*!

    41     Constructor

    42 */

    43 HsClockSettingsNotifier::HsClockSettingsNotifier(QObject *parent)

    44     : QObject(parent),

    45       mDateTimeNotifier(0)

    46 {

    47     mClockFormat = clockFormatString();

    48     mTimeFormat = timeFormatString();

    49     createObserver();

    50 }

    51 

    52 

    53 

    54 /*!

    55     Destructor.

    56 */

    57 HsClockSettingsNotifier::~HsClockSettingsNotifier()

    58 {

    59     delete mDateTimeNotifier;

    60 }

    61 

    62 /*!

    63     Returns the clock format ('analog'/'digital')

    64 */

    65 QString HsClockSettingsNotifier::clockFormat() const

    66 {

    67     return mClockFormat;

    68 }

    69 

    70 /*!

    71     Returns the time format ('12'/'24')

    72 */

    73 QString HsClockSettingsNotifier::timeFormat() const

    74 {

    75     return mTimeFormat;

    76 }

    77 

    78 /*!

    79     Callback function to receive system settings changes.

    80 */

    81 TInt HsClockSettingsNotifier::EnvironmentChanged( TAny* aSelf )

    82 {

    83     HsClockSettingsNotifier* self = static_cast<HsClockSettingsNotifier*>(aSelf);

    84     if ( self ){

    85         TInt change = self->mDateTimeNotifier->Change();

    86         if ( change & EChangesLocale ) {

    87             self->onSettingsChanged();

    88         }

    89     }

    90     return KErrNone;        

    91 }

    92 

    93 /*!

    94  Creates CEnvironmentChangeNotifier object to listen system settings changes.

    95 */

    96 void HsClockSettingsNotifier::createObserver() 

    97 {

    98     if ( !mDateTimeNotifier ){

    99         mDateTimeNotifier = CEnvironmentChangeNotifier::NewL( 

   100             CActive::EPriorityLow,

   101             TCallBack( EnvironmentChanged, this ) );

   102         

   103         mDateTimeNotifier->Start();            

   104     }

   105 }   

   106 

   107 /*!

   108     Reads clock format from system locale settings

   109 */

   110 QString HsClockSettingsNotifier::clockFormatString() const

   111 {

   112     TLocale locale;

   113     TClockFormat clockFormat = locale.ClockFormat();

   114     if ( clockFormat==EClockAnalog ) {

   115         return QString(ANALOG);

   116     } else {

   117         return QString(DIGITAL);

   118     }

   119 }

   120 

   121 /*!

   122     Reads time format from system locale settings

   123 */

   124 QString HsClockSettingsNotifier::timeFormatString() const

   125 {

   126     TLocale locale;

   127     TTimeFormat timeFormat = locale.TimeFormat();

   128     if ( timeFormat==ETime12 ) {

   129         return QString(TIME12);

   130     } else {

   131         return QString(TIME24);

   132     }

   133 }

   134 

   135 /*!

   136 */

   137 void HsClockSettingsNotifier::onSettingsChanged()

   138 {

   139     QString clockFormat = clockFormatString();

   140     QString timeFormat = timeFormatString();

   141     if ( clockFormat != mClockFormat || timeFormat != mTimeFormat ) {

   142         mClockFormat = clockFormat;

   143         mTimeFormat = timeFormat;

   144         emit settingsChanged(mClockFormat, mTimeFormat);

   145     }

   146 }

   147