Revamped NetSystemTime! Changes include: 1. improved UI (e.g. ok/cancel work, timezone correctly changes date, new layout better suited for running in landscape mode, etc.) 2. improved code organization 3. smaller executable

1 files changed, 404 insertions, 0 deletions

diff --git a/noncore/settings/netsystemtime/mainwindow.cpp b/noncore/settings/netsystemtime/mainwindow.cpp
new file mode 100644
index 0000000..306117a
--- a/dev/null
+++ b/noncore/settings/netsystemtime/mainwindow.cpp
@@ -0,0 +1,404 @@
+/*
+                             This file is part of the OPIE Project
+               =.
+             .=l.            Copyright (c)  2002 OPIE team <opie@handhelds.org?>
+           .>+-=
+ _;:,     .>    :=|.         This file is free software; you can
+.> <`_,   >  .   <=          redistribute it and/or modify it under
+:`=1 )Y*s>-.--   :           the terms of the GNU General Public
+.="- .-=="i,     .._         License as published by the Free Software
+ - .   .-<_>     .<>         Foundation; either version 2 of the License,
+     ._= =}       :          or (at your option) any later version.
+    .%`+i>       _;_.
+    .i_,=:_.      -<s.       This file is distributed in the hope that
+     +  .  -:.       =       it will be useful, but WITHOUT ANY WARRANTY;
+    : ..    .:,     . . .    without even the implied warranty of
+    =_        +     =;=|`    MERCHANTABILITY or FITNESS FOR A
+  _.=:.       :    :=>`:     PARTICULAR PURPOSE. See the GNU General
+..}^=.=       =       ;      Public License for more details.
+++=   -.     .`     .:
+ :     =  ...= . :.=-        You should have received a copy of the GNU
+ -.   .:....=;==+<;          General Public License along with this file;
+  -_. . .   )=.  =           see the file COPYING. If not, write to the
+    --        :-=`           Free Software Foundation, Inc.,
+                             59 Temple Place - Suite 330,
+                             Boston, MA 02111-1307, USA.
+
+*/
+
+#include "mainwindow.h"
+#include "timetabwidget.h"
+#include "formattabwidget.h"
+#include "settingstabwidget.h"
+#include "ntptabwidget.h"
+#include "predicttabwidget.h"
+#include "systemtimeconfig.h"
+
+#include <opie/oprocess.h>
+#include <opie/otabwidget.h>
+
+#include <qpe/config.h>
+#include <qpe/datebookdb.h>
+#include <qpe/qpeapplication.h>
+
+#if ( defined Q_WS_QWS || defined(_WS_QWS_) ) && !defined(QT_NO_COP)
+#include <qpe/qcopenvelope_qws.h>
+#endif
+
+#include <qlayout.h>
+#include <qmessagebox.h>
+#include <qsocket.h>
+#include <qstring.h>
+#include <qtimer.h>
+
+MainWindow::MainWindow()
+        : QDialog( 0x0, 0x0, TRUE, 0 )
+{
+        setCaption( tr( "SystemTime" ) );
+
+        QVBoxLayout *layout = new QVBoxLayout( this );
+        layout->setMargin( 2 );
+        layout->setSpacing( 4 );
+
+        // Create main tabbed control
+        mainWidget = new OTabWidget( this );
+
+        // Default object pointers to null
+        ntpProcess = 0x0;
+        ntpTab = 0x0;
+
+        // Add tab widgets 
+        mainWidget->addTab( timeTab = new TimeTabWidget( mainWidget ), "netsystemtime/DateTime", tr( "Time" ) );
+        mainWidget->addTab( formatTab = new FormatTabWidget( mainWidget ), "netsystemtime/formattab", tr( "Format" ) );
+        mainWidget->addTab( settingsTab = new SettingsTabWidget( mainWidget ), "SettingsIcon", tr( "Settings" ) );
+        mainWidget->addTab( predictTab = new PredictTabWidget( mainWidget ), "netsystemtime/predicttab", tr( "Predict" ) );
+        Config config( "ntp" );
+        config.setGroup( "settings" );
+        slotDisplayNTPTab( config.readBoolEntry( "displayNtpTab", FALSE ) );
+        slotDisplayPredictTab( config.readBoolEntry( "displayPredictTab", FALSE ) );
+
+        mainWidget->setCurrentTab( tr( "Time" ) );
+        layout->addWidget( mainWidget );
+
+        // Create QCOP channel
+        QCopChannel *channel = new QCopChannel( "QPE/Application/netsystemtime", this );
+        connect( channel, SIGNAL(received(const QCString&, const QByteArray&)),
+                         this, SLOT(slotQCopReceive(const QCString&, const QByteArray&)) );
+
+        // Create NTP socket
+        ntpSock = new QSocket( this );
+        connect( ntpSock, SIGNAL(error(int)),SLOT(slotCheckNtp(int)) );
+        slotProbeNTPServer();
+
+        // Create timer for automatic time lookups
+        ntpTimer = new QTimer( this );
+
+        // Connect everything together
+        connect( timeTab, SIGNAL(getNTPTime()), this, SLOT(slotGetNTPTime()) );
+        connect( timeTab, SIGNAL(tzChanged(const QString &)), predictTab, SLOT(slotTZChanged(const QString &)) );
+        connect( timeTab, SIGNAL(getPredictedTime()), predictTab, SLOT(slotSetPredictedTime()) );
+        connect( formatTab, SIGNAL(show12HourTime(int)), timeTab, SLOT(slotUse12HourTime( int )) );
+        connect( formatTab, SIGNAL(dateFormatChanged(const DateFormat &)),
+                         timeTab, SLOT(slotDateFormatChanged(const DateFormat &)) );
+        connect( formatTab, SIGNAL(weekStartChanged(int)), timeTab, SLOT(slotWeekStartChanged(int)) );
+        connect( settingsTab, SIGNAL(ntpDelayChanged(int)), this, SLOT(slotNTPDelayChanged(int)) );
+        connect( settingsTab, SIGNAL(displayNTPTab(bool)), this, SLOT(slotDisplayNTPTab(bool)) );
+        connect( settingsTab, SIGNAL(displayPredictTab(bool)), this, SLOT(slotDisplayPredictTab(bool)) );
+        connect( predictTab, SIGNAL(setTime(const QDateTime &)), this, SLOT(slotSetTime(const QDateTime &)) );
+
+        // Do initial time server check
+        slotNTPDelayChanged( config.readNumEntry( "ntpRefreshFreq", 1440 ) );
+        slotCheckNtp( -1 );
+
+        // Display app
+        showMaximized();
+}
+
+MainWindow::~MainWindow()
+{
+        if ( ntpProcess )
+                delete ntpProcess;
+}
+
+void MainWindow::accept()
+{
+        // Turn off the screensaver (Note: needs to be encased in { } so that it deconstructs and sends)
+        {
+                QCopEnvelope disableScreenSaver( "QPE/System", "setScreenSaverIntervals(int,int,int)" );
+                disableScreenSaver << 0 << 0 << 0;
+        }
+
+        // Update the systemtime
+        timeTab->saveSettings( TRUE );
+
+        // Save format options
+        formatTab->saveSettings( TRUE );
+
+        // Save settings options
+        settingsTab->saveSettings();
+
+        // Since time has changed quickly load in the DateBookDB to allow the alarm server to get a better
+        // grip on itself (example re-trigger alarms for when we travel back in time).
+        DateBookDB db;
+
+        // Turn back on the screensaver
+        QCopEnvelope enableScreenSaver( "QPE/System", "setScreenSaverIntervals(int,int,int)" );
+        enableScreenSaver << -1 << -1 << -1;
+
+        // Exit app
+        qApp->quit();
+}
+
+void MainWindow::reject()
+{
+        // Reset time settings
+        timeTab->saveSettings( FALSE );
+
+        // Send notifications but do not save settings
+        formatTab->saveSettings( FALSE );
+
+        // Exit app
+        qApp->quit();
+}
+
+void MainWindow::runNTP()
+{
+        if ( !ntpDelayElapsed() && ntpInteractive )
+        {
+                QString msg = tr( "You asked for a delay of " );
+                msg.append( QString::number( ntpDelay ) );
+                msg.append( tr( " minutes, but only " ) );
+                msg.append( QString::number( _lookupDiff / 60 ) );
+                msg.append( tr(" minutes elapsed since last lookup.<br>Continue?") );
+                
+                switch (
+                        QMessageBox::warning( this, tr( "Continue?" ), msg, QMessageBox::Yes, QMessageBox::No )
+                        )
+                {
+                        case QMessageBox::Yes: break;
+                        case QMessageBox::No:  return;
+                        default: return;
+                }
+        }
+
+        QString srv = settingsTab->ntpServer();
+
+        // Send information to time server tab if enabled
+        if ( ntpTabEnabled )
+        {
+                ntpTab->setStartTime( QDateTime::currentDateTime().toString() );
+                QString output = tr( "Running:\nntpdate " );
+                output.append( srv );
+                ntpTab->addNtpOutput( output );
+        }
+
+        if ( !ntpProcess )
+        {
+                ntpProcess = new OProcess();
+                connect( ntpProcess, SIGNAL(receivedStdout(OProcess*,char*,int)),
+                                 this, SLOT(slotNtpOutput(OProcess*,char*,int)) );
+                connect( ntpProcess, SIGNAL(processExited(OProcess*)),
+                                 this, SLOT(slotNtpFinished(OProcess*)) );
+        }
+
+        else
+                ntpProcess->clearArguments();
+        
+        *ntpProcess << "ntpdate" << srv;
+        bool ret = ntpProcess->start( OProcess::NotifyOnExit, OProcess::AllOutput );
+        if ( !ret )
+        {
+                QMessageBox::critical( this, tr( "Error" ), tr( "Error while getting time from network." ) );
+                if ( ntpTabEnabled )
+                        ntpTab->addNtpOutput( tr( "Error while executing ntpdate" ) );
+        }
+}
+
+bool MainWindow::ntpDelayElapsed()
+{
+        // Determine if time elapsed is greater than time delay
+        Config config( "ntp" );
+        config.setGroup( "lookups" );
+        _lookupDiff = TimeConversion::toUTC( QDateTime::currentDateTime() ) - config.readNumEntry( "time", 0 );
+        if ( _lookupDiff < 0 )
+                return true;
+        return ( _lookupDiff - ( ntpDelay * 60) ) > 0;
+}
+
+void MainWindow::slotSetTime( const QDateTime &dt )
+{
+        timeTab->setDateTime( dt );
+}
+
+void MainWindow::slotQCopReceive( const QCString &msg, const QByteArray & )
+{
+        if ( msg == "ntpLookup(QString)" )
+        {
+                ntpInteractive = false;
+                runNTP();
+        }
+        if ( msg == "setPredictedTime(QString)" )
+        {
+                //setPredictTime();
+        }
+}
+
+void MainWindow::slotDisplayNTPTab( bool display )
+{
+        ntpTabEnabled = display;
+
+        // Create widget if it hasn't needed
+        if ( display && !ntpTab )
+        {
+                ntpTab = new NTPTabWidget( mainWidget );
+                connect( ntpTab, SIGNAL(getNTPTime()), this, SLOT(slotGetNTPTime()) );
+        }
+
+        // Display/hide tab
+        display ? mainWidget->addTab( ntpTab, "netsystemtime/ntptab", tr( "Time Server" ) )
+                        : mainWidget->removePage( ntpTab );
+}
+
+void MainWindow::slotDisplayPredictTab( bool display )
+{
+        predictTabEnabled = display;
+
+        // Create widget if it hasn't needed
+        if ( display && !predictTab )
+        {
+        }
+        // Display/hide tab
+        display ? mainWidget->addTab( predictTab, "netsystemtime/predicttab", tr( "Predict" ) )
+                        : mainWidget->removePage( predictTab );
+}
+
+void MainWindow::slotGetNTPTime()
+{
+        ntpInteractive = TRUE;
+        runNTP();
+}
+
+void MainWindow::slotTimerGetNTPTime()
+{
+        ntpInteractive = FALSE;
+        runNTP();
+}
+
+void MainWindow::slotProbeNTPServer()
+{
+        ntpSock->connectToHost( settingsTab->ntpServer(), 123 );
+}
+
+void MainWindow::slotNtpOutput( OProcess *, char *buffer, int buflen )
+{
+        QString output = QString( buffer ).left( buflen );
+        ntpOutput.append( output );
+
+        if ( ntpTabEnabled )
+                ntpTab->addNtpOutput( output );
+}
+
+void MainWindow::slotNtpFinished( OProcess *p )
+{
+        QString output;
+        QDateTime dt = QDateTime::currentDateTime();
+        
+        //  Verify run was successful
+        if ( p->exitStatus() != 0 || !p->normalExit() )
+        {
+                if ( isVisible() && ntpInteractive )
+                {
+                        output = tr( "Error while getting time from\n server: " );
+                        output.append( settingsTab->ntpServer() );
+                        QMessageBox::critical(this, tr( "Error" ), output );
+                }
+        //      slotCheckNtp(-1);
+                return;
+        }
+
+        // Set controls on time tab to new time value
+        timeTab->setDateTime( dt );
+
+        // Write out lookup information
+        Config config( "ntp" );
+        config.setGroup( "lookups" );
+        int lastLookup = config.readNumEntry( "time", 0 );
+        int lookupCount = config.readNumEntry( "count", 0 );
+        bool lastNtp = config.readBoolEntry( "lastNtp", FALSE );
+        int time = TimeConversion::toUTC( QDateTime::currentDateTime() );
+        config.writeEntry( "time", time );
+
+        // Calculate new time/time shift
+        QString _offset = "offset";
+        QString _sec = "sec";
+        QRegExp _reOffset = QRegExp( _offset );
+        QRegExp _reEndOffset = QRegExp( _sec );
+        int posOffset = _reOffset.match(  ntpOutput );
+        int posEndOffset = _reEndOffset.match(  ntpOutput, posOffset );
+        posOffset += _offset.length() + 1;
+        QString diff =  ntpOutput.mid( posOffset, posEndOffset - posOffset - 1 );
+
+        float timeShift = diff.toFloat();
+        if ( timeShift == 0.0 )
+                return;
+        int secsSinceLast = time - lastLookup;
+        output = QString::number( timeShift );
+        output.append( tr( " seconds" ) );
+        
+        // Display information on time server tab
+        if ( ntpTabEnabled )
+        {
+                ntpTab->setTimeShift( output );
+                ntpTab->setNewTime( dt.toString() );
+        }
+
+        if ( lastNtp && lastLookup > 0 && secsSinceLast > 60 * ntpDelay )
+        {
+                QString grpname = QString( "lookup_" ).append( QString::number( lookupCount ) );
+                config.setGroup( grpname );
+                lookupCount++;
+                predictTab->setShiftPerSec( timeShift / secsSinceLast );
+                config.writeEntry( "secsSinceLast", secsSinceLast );
+                config.writeEntry( "timeShift", QString::number( timeShift ) );
+                config.setGroup( "lookups" );
+                config.writeEntry( "count", lookupCount );
+                config.writeEntry( "lastNtp", TRUE );
+        }
+}
+
+void MainWindow::slotNTPDelayChanged( int delay )
+{
+        ntpTimer->changeInterval( delay * 1000 * 60 );
+        ntpDelay = delay;
+}
+
+void MainWindow::slotCheckNtp( int i )
+{
+        if ( i == 0 )
+        {
+                if ( ntpDelayElapsed() )
+                {
+                        runNTP();
+                        disconnect( ntpTimer, SIGNAL(timeout()), this, SLOT(slotProbeNTPServer()) );
+                        connect( ntpTimer, SIGNAL(timeout()), SLOT(slotTimerGetNTPTime()) );
+                }
+                else
+                {
+                        disconnect(ntpTimer, SIGNAL(timeout()), this, SLOT(slotTimerGetNTPTime()) );
+                        connect(ntpTimer, SIGNAL(timeout()), SLOT(slotProbeNTPServer()) );
+                }
+        }
+        else
+        {
+                predictTab->slotPredictTime();
+                if ( i > 0 )
+                {
+                        QString output = tr( "Could not connect to server " );
+                        output.append( settingsTab->ntpServer() );
+                        ntpOutput.append( output );
+                        if ( ntpTabEnabled )
+                                ntpTab->addNtpOutput( output );
+                }
+                connect( ntpTimer, SIGNAL(timeout()), SLOT(slotProbeNTPServer()) );
+        }
+}