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()) );
+	}
+}