- moved the QPEScreenSaver to screensaver.cpp/.h and renamed the class to

  OpieScreenSaver
- (hopefully) fixed all outstanding bugs regarding the new on batt/on ac
  handling
- first (primitive) version of light sensor control (but it works)

5 files changed, 354 insertions, 298 deletions

diff --git a/core/launcher/desktop.cpp b/core/launcher/desktop.cpp
index 2ea6d27..bc43475 100644
--- a/core/launcher/desktop.cpp
+++ b/core/launcher/desktop.cpp
@@ -25,12 +25,13 @@
 #include "shutdownimpl.h"
 #include "startmenu.h"
 #include "taskbar.h"
 #include "transferserver.h"
 #include "irserver.h"
 #include "packageslave.h"
+#include "screensaver.h"
 
 #include <qpe/applnk.h>
 #include <qpe/mimetype.h>
 #include <qpe/password.h>
 #include <qpe/config.h>
 #include <qpe/power.h>
@@ -148,247 +149,12 @@ void DesktopPowerAlerter::hideEvent( QHideEvent *e )
 {
   QMessageBox::hideEvent( e );
   alertCount = 0;
   currentPriority = INT_MAX;
 }
 
-class QPEScreenSaver : public QWSScreenSaver
-{
-private:
-  int LcdOn;
-
-public:
-  QPEScreenSaver()
-  {
-    m_disable_suspend = 100;
-    m_enable_dim = false;
-    m_enable_lightoff = false;
-    m_enable_onlylcdoff = false;
-
-    m_disable_suspend_ac = 100;
-    m_enable_dim_ac = false;
-    m_enable_lightoff_ac = false;
-    m_enable_onlylcdoff_ac = false;
-    m_disable_apm_ac = false;
-
-    m_lcd_status = true;
-
-    m_backlight_normal = -1;
-    m_backlight_current = -1;
-    m_backlight_forcedoff = false;
-
-    // Make sure the LCD is in fact on, (if opie was killed while the LCD is off it would still be off)
-    ODevice::inst ( )-> setDisplayStatus ( true );
-    setBacklight ( -1 );
-  }
-  void restore()
-  {
-    if ( !m_lcd_status ) {    // We must have turned it off
-      ODevice::inst ( ) -> setDisplayStatus ( true );
-      m_lcd_status = true;
-    }
-
-    setBacklightInternal ( -1 );
-  }
-  bool save( int level )
-  {
-      bool onAC = ( PowerStatusManager::readStatus().acStatus() == PowerStatus::Online );
-
-      switch ( level ) {
-      case 0:
-
-          if ( m_disable_suspend_ac > 0 && m_enable_dim_ac && onAC ) {
-              if ( m_backlight_current > 1 )
-                  setBacklight( 1 ); // lowest non-off
-          } else  if ( !onAC && m_disable_suspend > 0 && m_enable_dim ) {
-              if ( m_backlight_current > 1 )
-                  setBacklightInternal( 1 ); // lowest non-off
-          }
-          return true;
-          break;
-      case 1:
-
-          if ( m_disable_suspend_ac > 1 && m_enable_lightoff_ac && onAC ) {
-              setBacklightInternal( 0 ); // off
-          } else if ( !onAC && m_disable_suspend > 1 && m_enable_lightoff ) {
-              setBacklightInternal( 0 ); // off
-          }
-          return true;
-          break;
-      case 2:
-          if ( m_disable_apm_ac && onAC ) {
-              return true;
-          }
-
-          if ( m_enable_onlylcdoff_ac && onAC ) {
-              ODevice::inst ( ) -> setDisplayStatus ( false );
-              m_lcd_status = false;
-              return true;
-          }
-          else if ( !onAC && m_enable_onlylcdoff ) {
-              ODevice::inst ( ) -> setDisplayStatus ( false );
-              m_lcd_status = false;
-              return true;
-          }
-          else // We're going to suspend the whole machine
-          {
-              if ( ( m_disable_suspend_ac > 2 && onAC ) && ( !Network::networkOnline ( ) ) ) {
-                  QWSServer::sendKeyEvent( 0xffff, Qt::Key_F34, FALSE, TRUE, FALSE );
-                  return true;
-              }
-              if ( !onAC && ( m_disable_suspend > 2 ) && ( !Network::networkOnline ( ) ) ) {
-                  QWSServer::sendKeyEvent( 0xffff, Qt::Key_F34, FALSE, TRUE, FALSE );
-                  return true;
-              }
-          }
-          break;
-      }
-      return false;
-  }
-
-private:
-  static int ssi( int interval, Config & config, const QString & enable, const QString & value, int def )
-  {
-    if ( !enable.isEmpty() && config.readNumEntry( enable, 0 ) == 0 )
-      return 0;
-
-    if ( interval < 0 ) {
-      // Restore screen blanking and power saving state
-      interval = config.readNumEntry( value, def );
-    }
-    return interval;
-  }
-
-public:
-  void setIntervals( int i1, int i2, int i3 )
-  {
-    Config config( "qpe" );
-    config.setGroup( "Screensaver" );
-
-    int v[ 4 ];
-    i1 = ssi( i1, config, "Dim", "Interval_Dim", 30 );
-    i2 = ssi( i2, config, "LightOff", "Interval_LightOff", 20 );
-    i3 = ssi( i3, config, "", "Interval", 60 );
-
-    //qDebug("screen saver intervals: %d %d %d", i1, i2, i3);
-
-    v [ 0 ] = QMAX( 1000 * i1, 100 );
-    v [ 1 ] = QMAX( 1000 * i2, 100 );
-    v [ 2 ] = QMAX( 1000 * i3, 100 );
-    v [ 3 ] = 0;
-    m_enable_dim = ( ( i1 != 0 ) ? config. readNumEntry ( "Dim", 1 ) : false );
-    m_enable_lightoff = ( ( i2 != 0 ) ? config. readNumEntry ( "LightOff", 1 ) : false );
-    m_enable_onlylcdoff = config.readNumEntry ( "LcdOffOnly", 0 );
-
-    if ( !i1 && !i2 && !i3 )
-      QWSServer::setScreenSaverInterval( 0 );
-    else
-      QWSServer::setScreenSaverIntervals( v );
-  }
-
-    void setIntervalsAC( int i1, int i2, int i3 )
-  {
-    Config config( "qpe" );
-    config.setGroup( "Screensaver" );
-
-    int v[ 4 ];
-    i1 = ssi( i1, config, "DimAC", "Interval_DimAC", 30 );
-    i2 = ssi( i2, config, "LightOffAC", "Interval_LightOffAC", 20 );
-    i3 = ssi( i3, config, "", "IntervalAC", 60 );
-
-    //qDebug("screen saver intervals: %d %d %d", i1, i2, i3);
-
-    v [ 0 ] = QMAX( 1000 * i1, 100 );
-    v [ 1 ] = QMAX( 1000 * i2, 100 );
-    v [ 2 ] = QMAX( 1000 * i3, 100 );
-    v [ 3 ] = 0;
-    m_enable_dim_ac = ( ( i1 != 0 ) ? config.readNumEntry ( "DimAC", 1 ) : false );
-    m_enable_lightoff_ac = ( ( i2 != 0 ) ? config.readNumEntry ( "LightOffAC", 1 ) : false );
-    m_enable_onlylcdoff_ac = config.readNumEntry ( "LcdOffOnlyAC", 0 );
-    m_disable_apm_ac =  config.readNumEntry ( "NoApmAC", 0 );
-
-    if ( !i1 && !i2 && !i3 )
-      QWSServer::setScreenSaverInterval( 0 );
-    else
-      QWSServer::setScreenSaverIntervals( v );
-  }
-
-  void setInterval ( int interval )
-  {
-    setIntervals ( -1, -1, interval );
-    setIntervalsAC ( -1, -1, interval );
-  }
-
-  void setMode ( int mode )
-  {
-    if ( mode > m_disable_suspend )
-      setInterval( -1 );
-    m_disable_suspend = mode;
-  }
-
-  void setBacklight ( int bright )
-  {
-    // Read from config
-    Config config ( "qpe" );
-    config. setGroup ( "Screensaver" );
-    m_backlight_normal = config. readNumEntry ( "Brightness", 255 );
-
-	setBacklightInternal ( bright );
-  }
-
-private:
-  void setBacklightInternal ( int bright )
-  {
-    if ( bright == -3 ) {
-      // Forced on
-      m_backlight_forcedoff = false;
-      bright = -1;
-    }
-    if ( m_backlight_forcedoff && bright != -2 )
-      return ;
-    if ( bright == -2 ) {
-      // Toggle between off and on
-      bright = m_backlight_current ? 0 : -1;
-      m_backlight_forcedoff = !bright;
-    }
-	if ( bright == -1 )
-		bright = m_backlight_normal;
-
-	if ( bright != m_backlight_current ) {
-      ODevice::inst ( )-> setDisplayBrightness ( bright );
-      m_backlight_current = bright;
-    }
-  }
-
-public:
-  void setDisplayState ( bool on )
-  {
-    if ( m_lcd_status != on ) {
-      ODevice::inst ( ) -> setDisplayStatus ( on );
-      m_lcd_status = on;
-    }
-  }
-
-private:
-  int m_disable_suspend;
-  bool m_enable_dim;
-  bool m_enable_lightoff;
-  bool m_enable_onlylcdoff;
-
-  int m_disable_suspend_ac;
-  bool m_enable_dim_ac;
-  bool m_enable_lightoff_ac;
-  bool m_enable_onlylcdoff_ac;
-  bool m_disable_apm_ac;
-
-  bool m_lcd_status;
-
-  int m_backlight_normal;
-  int m_backlight_current;
-  bool m_backlight_forcedoff;
-};
 
 void DesktopApplication::switchLCD ( bool on )
 {
   if ( qApp ) {
     DesktopApplication *dapp = (DesktopApplication *) qApp;
 
@@ -406,42 +172,71 @@ void DesktopApplication::switchLCD ( bool on )
 
 
 DesktopApplication::DesktopApplication( int& argc, char **argv, Type appType )
     : QPEApplication( argc, argv, appType )
 {
 
-  m_timer = new QTimer( this );
-  connect( m_timer, SIGNAL( timeout() ), this, SLOT( apmTimeout() ) );
-  Config cfg( "apm" );
-  cfg.setGroup( "Warnings" );
-  m_timer->start( 5000 );
+	Config cfg( "apm" );
+	cfg.setGroup( "Warnings" );
   //cfg.readNumEntry( "checkinterval", 10000 )
-  m_powerVeryLow = cfg.readNumEntry( "powerverylow", 10 );
-  m_powerCritical = cfg.readNumEntry( "powercritical", 5 );
-  ps = new PowerStatus;
-  pa = new DesktopPowerAlerter( 0 );
+	m_powerVeryLow = cfg.readNumEntry( "powerverylow", 10 );
+	m_powerCritical = cfg.readNumEntry( "powercritical", 5 );
+	
+	m_ps = new PowerStatus;
+	m_ps_last = new PowerStatus;
+	pa = new DesktopPowerAlerter( 0 );
 
-  channel = new QCopChannel( "QPE/Desktop", this );
-  connect( channel, SIGNAL( received( const QCString&, const QByteArray& ) ),
-           this, SLOT( desktopMessage( const QCString&, const QByteArray& ) ) );
+	m_timer = new QTimer( this );
+	connect( m_timer, SIGNAL( timeout() ), this, SLOT( apmTimeout() ) );
+	m_timer->start( 5000 );
+  
+	channel = new QCopChannel( "QPE/Desktop", this );
+	connect( channel, SIGNAL( received( const QCString&, const QByteArray& ) ),
+	         this, SLOT( desktopMessage( const QCString&, const QByteArray& ) ) );
 
-  channel = new QCopChannel( "QPE/System", this );
-  connect( channel, SIGNAL( received( const QCString&, const QByteArray& ) ),
-           this, SLOT( systemMessage( const QCString&, const QByteArray& ) ) );
+	channel = new QCopChannel( "QPE/System", this );
+	connect( channel, SIGNAL( received( const QCString&, const QByteArray& ) ),
+	         this, SLOT( systemMessage( const QCString&, const QByteArray& ) ) );
 
-  m_screensaver = new QPEScreenSaver;
-
-  m_screensaver-> setInterval ( -1 );
-  QWSServer::setScreenSaver( m_screensaver );
+	m_screensaver = new OpieScreenSaver ( );
+	m_screensaver-> setInterval ( -1 );	
+	QWSServer::setScreenSaver( m_screensaver );
+	
+	apmTimeout ( );
 }
 
 
 DesktopApplication::~DesktopApplication()
 {
-  delete ps;
-  delete pa;
+	delete m_ps;
+	delete m_ps_last;
+	delete pa;
+}
+
+void DesktopApplication::apmTimeout()
+{
+	qpedesktop->checkMemory(); // in case no events are being generated
+
+	*m_ps_last = *m_ps;	
+	*m_ps = PowerStatusManager::readStatus();
+
+	if ( m_ps-> acStatus ( ) != m_ps_last-> acStatus ( ))
+		m_screensaver-> powerStatusChanged ( *m_ps );
+
+	int bat = m_ps-> batteryPercentRemaining ( );
+
+	if ( m_ps_last-> batteryPercentRemaining ( ) != bat ) {
+		if ( bat <= m_powerCritical ) 
+			pa->alert( tr( "Battery level is critical!\nKeep power off until power restored!" ), 1 );
+		else if ( bat <= m_powerVeryLow )
+			pa->alert( tr( "Battery is running very low." ), 2 );
+
+
+		if ( m_ps-> backupBatteryStatus ( ) == PowerStatus::VeryLow ) 
+			pa->alert( tr( "The Back-up battery is very low.\nPlease charge the back-up battery." ), 2 );
+  	}
 }
 
 void DesktopApplication::desktopMessage( const QCString &msg, const QByteArray &data )
 {
   QDataStream stream( data, IO_ReadOnly );
   if ( msg == "keyRegister(int key, QString channel, QString message)" ) {
@@ -468,17 +263,12 @@ void DesktopApplication::systemMessage( const QCString & msg, const QByteArray &
   }
   else if ( msg == "setScreenSaverIntervals(int,int,int)" ) {
     int t1, t2, t3;
     stream >> t1 >> t2 >> t3;
     m_screensaver-> setIntervals( t1, t2, t3 );
   }
-  else if ( msg == "setScreenSaverIntervalsAC(int,int,int)" ) {
-      int t1, t2, t3;
-      stream >> t1 >> t2 >> t3;
-      m_screensaver-> setIntervalsAC( t1, t2, t3 );
-  }
   else if ( msg == "setBacklight(int)" ) {
     int bright;
     stream >> bright;
     m_screensaver-> setBacklight( bright );
   }
   else if ( msg == "setScreenSaverMode(int)" ) {
@@ -636,45 +426,12 @@ bool DesktopApplication::qwsEventFilter( QWSEvent *e )
   }
 
   return QPEApplication::qwsEventFilter( e );
 }
 #endif
 
-void DesktopApplication::psTimeout( int batRemaining )
-{
-  *ps = PowerStatusManager::readStatus();
-
-  // maybe now since its triggered by apm change there might be to few warnings
-  // if ( ( ps->batteryStatus() == PowerStatus::VeryLow ) ) {
-  if ( ( batRemaining == m_powerVeryLow ) ) {
-       pa->alert( tr( "Battery is running very low." ), 2 );
-  }
-
-   // if ( ps->batteryStatus() == PowerStatus::Critical ) {
-   if ( batRemaining == m_powerCritical ) {
-       pa->alert( tr( "Battery level is critical!\n"
-                      "Keep power off until power restored!" ), 1 );
-  }
-
-  if ( ps->backupBatteryStatus() == PowerStatus::VeryLow ) {
-    pa->alert( tr( "The Back-up battery is very low.\nPlease charge the back-up battery." ), 2 );
-  }
-}
-
-void DesktopApplication::apmTimeout()
-{
-    qpedesktop->checkMemory(); // in case no events are being generated
-
-    *ps = PowerStatusManager::readStatus();
-
-    if ( m_currentPowerLevel != ps->batteryPercentRemaining() ) {
-        // not very nice, since psTimeout parses the again
-        m_currentPowerLevel = ps->batteryPercentRemaining();
-        psTimeout( m_currentPowerLevel );
-    }
-}
 
 void DesktopApplication::sendCard()
 {
   delete cardSendTimer;
   cardSendTimer = 0;
   QString card = getenv( "HOME" );
diff --git a/core/launcher/desktop.h b/core/launcher/desktop.h
index 8308811..f6059b8 100644
--- a/core/launcher/desktop.h
+++ b/core/launcher/desktop.h
@@ -34,13 +34,13 @@ class Launcher;
 class TaskBar;
 class PowerStatus;
 class QCopBridge;
 class TransferServer;
 class DesktopPowerAlerter;
 class PackageSlave;
-class QPEScreenSaver;
+class OpieScreenSaver;
 
 class DesktopApplication : public QPEApplication
 {
   Q_OBJECT
 public:
   DesktopApplication( int& argc, char **argv, Type t );
@@ -74,22 +74,21 @@ protected:
 public slots:
   virtual void desktopMessage ( const QCString &msg, const QByteArray &data );
   virtual void systemMessage ( const QCString &msg, const QByteArray &data );
 
 protected slots:
   void shutdown( ShutdownImpl::Type );
-  void psTimeout( int );
   void apmTimeout();
   void sendCard();
 private:
     void reloadPowerWarnSettings();
     DesktopPowerAlerter *pa;
-    PowerStatus *ps;
+    PowerStatus *m_ps, *m_ps_last;
     QTimer *cardSendTimer;
     QCopChannel *channel;
-    QPEScreenSaver *m_screensaver;
+    OpieScreenSaver *m_screensaver;
     QTimer * m_timer;
     int m_powerVeryLow;
     int m_powerCritical;
     int m_currentPowerLevel;
 };
 
diff --git a/core/launcher/launcher.pro b/core/launcher/launcher.pro
index 95642af..83f8b5c 100644
--- a/core/launcher/launcher.pro
+++ b/core/launcher/launcher.pro
@@ -1,11 +1,12 @@
 TEMPLATE	= app
 CONFIG		= qt warn_on release
 DESTDIR		= ../../bin
 HEADERS		= background.h \
 		  desktop.h \
+		  screensaver.h \
 		  qprocess.h \
 		  mediummountgui.h \
 		  info.h \
 		  appicons.h \
 		  taskbar.h \
 		  sidething.h \
@@ -41,12 +42,13 @@ HEADERS		= background.h \
 	../../rsync/whole.h \
 	../../rsync/config_rsync.h \
 	../../rsync/qrsync.h \
 		  quicklauncher.h 
 SOURCES		= background.cpp \
 		  desktop.cpp \
+		  screensaver.cpp \
 		  mediummountgui.cpp \
 		  qprocess.cpp qprocess_unix.cpp \
 		  info.cpp \
 		  appicons.cpp \
 		  taskbar.cpp \
 		  sidething.cpp \
diff --git a/core/launcher/screensaver.cpp b/core/launcher/screensaver.cpp
new file mode 100644
index 0000000..9e823ff
--- a/dev/null
+++ b/core/launcher/screensaver.cpp
@@ -0,0 +1,237 @@
+
+#include "screensaver.h"
+
+#include <qpe/config.h>
+#include <qpe/power.h>
+#include <qpe/network.h>
+
+#include <opie/odevice.h>
+
+
+using namespace Opie;
+
+
+OpieScreenSaver::OpieScreenSaver ( )
+		: QObject ( 0, "screensaver" ), QWSScreenSaver ( )
+{
+	m_disable_suspend = 100;
+	m_enable_dim = false;
+	m_enable_lightoff = false;
+	m_enable_suspend = false;
+	m_onlylcdoff = false;
+
+	m_enable_dim_ac = false;
+	m_enable_lightoff_ac = false;
+	m_enable_suspend_ac = false;
+	m_onlylcdoff_ac = false;
+
+	m_use_light_sensor = false;
+	m_backlight_sensor = -1;
+
+	m_lcd_status = true;
+
+	m_backlight_normal = -1;
+	m_backlight_current = -1;
+	m_backlight_forcedoff = false;
+
+	m_on_ac = false;
+
+	m_level = -1;
+
+	// Make sure the LCD is in fact on, (if opie was killed while the LCD is off it would still be off)
+	ODevice::inst ( )-> setDisplayStatus ( true );
+	setBacklight ( -1 );
+}
+
+
+void OpieScreenSaver::restore()
+{
+	m_level = -1;
+
+	if ( !m_lcd_status ) {    // We must have turned it off
+		ODevice::inst ( ) -> setDisplayStatus ( true );
+		m_lcd_status = true;
+	}
+
+	setBacklightInternal ( -1 );
+}
+
+
+bool OpieScreenSaver::save( int level )
+{
+	m_level = level;
+
+	switch ( level ) {
+		case 0:
+			if (( m_on_ac && m_enable_dim_ac ) ||
+			        ( !m_on_ac && m_enable_dim )) {
+				if (( m_disable_suspend > 0 ) && ( m_backlight_current > 1 ) && !m_use_light_sensor )
+					setBacklightInternal ( 1 ); // lowest non-off
+			}
+			return true;
+			break;
+
+		case 1:
+			if (( m_on_ac && m_enable_lightoff_ac ) ||
+			        ( !m_on_ac && m_enable_lightoff )) {
+				if ( m_disable_suspend > 1 )
+					setBacklightInternal ( 0 ); // off
+			}
+			return true;
+			break;
+
+		case 2:
+			if (( m_on_ac && !m_enable_suspend_ac ) ||
+			        ( !m_on_ac && !m_enable_suspend )) {
+				return true;
+			}
+
+			if (( m_on_ac && m_onlylcdoff_ac ) ||
+			        ( !m_on_ac && m_onlylcdoff )) {
+				ODevice::inst ( ) -> setDisplayStatus ( false );
+				m_lcd_status = false;
+				return true;
+			}
+
+			// We're going to suspend the whole machine
+
+			if (( m_disable_suspend > 2 ) && !Network::networkOnline ( )) {
+				QWSServer::sendKeyEvent( 0xffff, Qt::Key_F34, FALSE, TRUE, FALSE );
+				return true;
+			}
+
+			break;
+	}
+	return false;
+}
+
+
+void OpieScreenSaver::setIntervals ( int i1, int i2, int i3 )
+{
+	Config config ( "apm" );
+	config. setGroup ( m_on_ac ? "AC" : "Battery" );
+
+	int v[ 4 ];
+	if ( i1 < 0 )
+		i1 = config. readNumEntry ( "Dim", 30 );
+	if ( i2 < 0 )
+		i2 = config. readNumEntry ( "LightOff", 20 );
+	if ( i3 < 0 )
+		i3 = config. readNumEntry ( "Suspend", 60 );
+
+	if ( m_on_ac ) {
+		m_enable_dim_ac = ( i1 > 0 );
+		m_enable_lightoff_ac = ( i2 > 0 );
+		m_enable_suspend_ac = ( i3 > 0 );
+		m_onlylcdoff_ac = config.readNumEntry ( "LcdOffOnly", 0 );
+	}
+	else {
+		m_enable_dim = ( i1 > 0 );
+		m_enable_lightoff = ( i2 > 0 );
+		m_enable_suspend = ( i3 > 0 );
+		m_onlylcdoff = config.readNumEntry ( "LcdOffOnly", 0 );
+	}
+	
+	qDebug("screen saver intervals: %d %d %d", i1, i2, i3);
+
+	v [ 0 ] = QMAX( 1000 * i1, 100 );
+	v [ 1 ] = QMAX( 1000 * i2, 100 );
+	v [ 2 ] = QMAX( 1000 * i3, 100 );
+	v [ 3 ] = 0;
+
+	if ( !i1 && !i2 && !i3 )
+		QWSServer::setScreenSaverInterval( 0 );
+	else
+		QWSServer::setScreenSaverIntervals( v );
+}
+
+
+void OpieScreenSaver::setInterval ( int interval )
+{
+	setIntervals ( -1, -1, interval );
+}
+
+
+void OpieScreenSaver::setMode ( int mode )
+{
+	if ( mode > m_disable_suspend )
+		setInterval ( -1 );
+	m_disable_suspend = mode;
+}
+
+
+void OpieScreenSaver::setBacklight ( int bright )
+{
+	// Read from config
+	Config config ( "apm" );
+	config. setGroup ( m_on_ac ? "AC" : "Battery" );
+	m_backlight_normal = config. readNumEntry ( "Brightness", 255 );
+
+	m_use_light_sensor = config. readBoolEntry ( "LightSensor", false );
+
+	qDebug ( "setBacklight: %d (ls: %d)", m_backlight_normal, m_use_light_sensor ? 1 : 0 );
+
+	killTimers ( );
+	if ( m_use_light_sensor ) {
+		timerEvent ( 0 );
+		startTimer ( 2000 );
+	}
+
+	setBacklightInternal ( bright );
+}
+
+
+void OpieScreenSaver::setBacklightInternal ( int bright )
+{
+	if ( bright == -3 ) {
+		// Forced on
+		m_backlight_forcedoff = false;
+		bright = -1;
+	}
+	if ( m_backlight_forcedoff && bright != -2 )
+		return ;
+	if ( bright == -2 ) {
+		// Toggle between off and on
+		bright = m_backlight_current ? 0 : -1;
+		m_backlight_forcedoff = !bright;
+	}
+	if ( bright == -1 )
+		bright = m_use_light_sensor ? m_backlight_sensor : m_backlight_normal;
+
+	if ( bright != m_backlight_current ) {
+		ODevice::inst ( )-> setDisplayBrightness ( bright );
+		m_backlight_current = bright;
+	}
+}
+
+
+void OpieScreenSaver::timerEvent ( QTimerEvent * )
+{
+	m_backlight_sensor = (( 255 - ODevice::inst ( )-> readLightSensor ( )) * m_backlight_normal ) / 255;
+
+	if ( m_level <= 0 )
+		setBacklightInternal ( -1 );
+}
+
+
+void OpieScreenSaver::setDisplayState ( bool on )
+{
+	if ( m_lcd_status != on ) {
+		ODevice::inst ( ) -> setDisplayStatus ( on );
+		m_lcd_status = on;
+	}
+}
+
+
+void OpieScreenSaver::powerStatusChanged ( PowerStatus ps )
+{
+	bool newonac = ( ps. acStatus ( ) == PowerStatus::Online );
+	
+	if ( newonac != m_on_ac ) {
+		m_on_ac = newonac;
+		setInterval ( -1 );
+		setBacklight ( -1 );
+		restore ( );		
+	}
+}
+
diff --git a/core/launcher/screensaver.h b/core/launcher/screensaver.h
new file mode 100644
index 0000000..9126f33
--- a/dev/null
+++ b/core/launcher/screensaver.h
@@ -0,0 +1,61 @@
+#ifndef __LAUNCHER_SCREENSAVER_H__
+#define __LAUNCHER_SCREENSAVER_H__
+
+#include <qwindowsystem_qws.h>
+#include <qobject.h>
+
+#include <qpe/power.h>
+
+class OpieScreenSaver : public QObject, public QWSScreenSaver
+{
+public:
+	OpieScreenSaver ( );
+
+	void restore ( );
+	bool save ( int level );
+
+	void setIntervals( int i1, int i2, int i3 );
+	void setIntervalsAC( int i1, int i2, int i3 );
+
+	void setInterval ( int interval );
+
+	void setMode ( int mode );
+
+	void setBacklight ( int bright );
+	void setDisplayState ( bool on );
+
+	void powerStatusChanged ( PowerStatus ps );
+
+private:
+	void setBacklightInternal ( int bright );
+
+protected:
+	virtual void timerEvent ( QTimerEvent * );
+
+private:
+	int m_disable_suspend;
+	bool m_enable_dim;
+	bool m_enable_lightoff;
+	bool m_enable_suspend;
+	bool m_onlylcdoff;
+
+	bool m_enable_dim_ac;
+	bool m_enable_lightoff_ac;
+	bool m_enable_suspend_ac;
+	bool m_onlylcdoff_ac;
+
+	bool m_use_light_sensor;
+	int m_backlight_sensor;
+
+	bool m_lcd_status;
+
+	int m_backlight_normal;
+	int m_backlight_current;
+	bool m_backlight_forcedoff;
+
+	bool m_on_ac;
+	
+	int m_level;
+};
+
+#endif