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:

    15 *

    16 */

    17 

    18 #include <QTimer>

    19 #include "hsclockwidgettimer.h"

    20 

    21 /*!

    22     \class HsClockWidgetTimer

    23     \ingroup group_hsclockwidgetplugin

    24     \brief Common timer for all clock widgets that run in the HS process.

    25 */

    26 

    27 /*!

    28     Constructs new timer with the given \a parent.

    29 */

    30 HsClockWidgetTimer::HsClockWidgetTimer(QObject *parent)

    31   : QObject(parent),

    32     mTimer(0)

    33 {

    34     mTimer = new QTimer(this);

    35     mTimer->setInterval(1000);    

    36     connect(mTimer, SIGNAL(timeout()), SLOT(onTick()));

    37 }

    38 

    39 /*!

    40     Destructor.

    41 */

    42 HsClockWidgetTimer::~HsClockWidgetTimer()

    43 {

    44     mTimer->stop();

    45 }

    46 

    47 /*!

    48     Return the static timer instance.

    49 */

    50 HsClockWidgetTimer *HsClockWidgetTimer::instance()

    51 {

    52     if (!mInstance) {

    53         mInstance = new HsClockWidgetTimer;

    54     }

    55     return mInstance;

    56 }

    57 

    58 /*!

    59     \internal

    60 */

    61 void HsClockWidgetTimer::connectNotify(const char *signal)

    62 {

    63     mTimer->start();

    64     QObject::connectNotify(signal);

    65 }

    66 

    67 /*!

    68     \internal

    69 */

    70 void HsClockWidgetTimer::disconnectNotify(const char *signal)

    71 {

    72     if (receivers(SIGNAL(tick())) == 0) {

    73         mTimer->stop();

    74     }

    75     QObject::disconnectNotify(signal);

    76 }

    77 

    78 /*!

    79     \internal

    80 */

    81 void HsClockWidgetTimer::onTick()

    82 {

    83     if (0 < receivers(SIGNAL(tick()))) {        

    84         emit tick();

    85     } else {        

    86         mTimer->stop();

    87     }    

    88 }

    89 

    90 /*!

    91     Static timer.

    92 */

    93 HsClockWidgetTimer *HsClockWidgetTimer::mInstance = 0;