Speed (and sanity ;) optimization:

Until now the launcher parsed qpe.conf, open the ts device, set the
backlight with an ioctl and closed the device again on *every* keypress or
stylus tap.
This is only done now, when it is really necessary (~1% of all cases).
Additionally this allows easier integration of the iPAQ light-sensor.

1 files changed, 30 insertions, 26 deletions

diff --git a/core/launcher/desktop.cpp b/core/launcher/desktop.cpp
index 387650b..d2bd8ae 100644
--- a/core/launcher/desktop.cpp
+++ b/core/launcher/desktop.cpp
@@ -1,579 +1,583 @@
 /**********************************************************************
 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
 **
 ** This file is part of Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #include "desktop.h"
 #include "info.h"
 #include "launcher.h"
 //#include "mrulist.h"
 #include "qcopbridge.h"
 #include "shutdownimpl.h"
 #include "startmenu.h"
 #include "taskbar.h"
 #include "transferserver.h"
 #include "irserver.h"
 #include "packageslave.h"
 
 #include <qpe/applnk.h>
 #include <qpe/mimetype.h>
 #include <qpe/password.h>
 #include <qpe/config.h>
 #include <qpe/power.h>
 #include <qpe/timeconversion.h>
 #include <qpe/qcopenvelope_qws.h>
 #include <qpe/network.h>
 #include <qpe/global.h>
 
 #if defined( QT_QWS_CUSTOM ) || defined( QT_QWS_IPAQ )
 #include <qpe/custom.h>
 #endif
 
 #include <opie/odevice.h>
 
 #include <qgfx_qws.h>
 #include <qmainwindow.h>
 #include <qmessagebox.h>
 #include <qtimer.h>
 #include <qwindowsystem_qws.h>
 
 #include <qvaluelist.h>
 
 #include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
 
 using namespace Opie;
 
 class QCopKeyRegister
 {
 public:
   QCopKeyRegister() : keyCode( 0 )
   { }
   QCopKeyRegister( int k, const QString &c, const QString &m )
       : keyCode( k ), channel( c ), message( m )
   { }
 
   int getKeyCode() const
   {
     return keyCode;
   }
   QString getChannel() const
   {
     return channel;
   }
   QString getMessage() const
   {
     return message;
   }
 
 private:
   int keyCode;
   QString channel, message;
 };
 
 typedef QValueList<QCopKeyRegister> KeyRegisterList;
 KeyRegisterList keyRegisterList;
 
 static Desktop* qpedesktop = 0;
 static int loggedin = 0;
 static void login( bool at_poweron )
 {
   if ( !loggedin ) {
     Global::terminateBuiltin( "calibrate" );
     Password::authenticate( at_poweron );
     loggedin = 1;
     QCopEnvelope e( "QPE/Desktop", "unlocked()" );
   }
 }
 
 bool Desktop::screenLocked()
 {
   return loggedin == 0;
 }
 
 /*
   Priority is number of alerts that are needed to pop up
   alert.
  */
 class DesktopPowerAlerter : public QMessageBox
 {
 public:
   DesktopPowerAlerter( QWidget *parent, const char *name = 0 )
       : QMessageBox( tr( "Battery Status" ), "Low Battery",
                      QMessageBox::Critical,
                      QMessageBox::Ok | QMessageBox::Default,
                      QMessageBox::NoButton, QMessageBox::NoButton,
                      parent, name, FALSE )
   {
     currentPriority = INT_MAX;
     alertCount = 0;
   }
 
   void alert( const QString &text, int priority );
   void hideEvent( QHideEvent * );
 private:
   int currentPriority;
   int alertCount;
 };
 
 void DesktopPowerAlerter::alert( const QString &text, int priority )
 {
   alertCount++;
   if ( alertCount < priority )
     return ;
   if ( priority > currentPriority )
     return ;
   currentPriority = priority;
   setText( text );
   show();
 }
 
 
 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_lcd_status = true;
 
-    m_backlight_bright = -1;
+	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 );
+    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;
     }
 
-    setBacklight ( -1 );
+    setBacklightInternal ( -1 );
   }
   bool save( int level )
   {
     switch ( level ) {
       case 0:
         if ( m_disable_suspend > 0 && m_enable_dim ) {
-          if ( backlight() > 1 )
-            setBacklight( 1 ); // lowest non-off
+          if ( m_backlight_current > 1 )
+            setBacklightInternal ( 1 ); // lowest non-off
         }
         return true;
         break;
       case 1:
         if ( m_disable_suspend > 1 && m_enable_lightoff ) {
-          setBacklight( 0 ); // off
+          setBacklightInternal ( 0 ); // off
         }
         return true;
         break;
       case 2:
         if ( m_enable_onlylcdoff ) {
-          ODevice::inst ( ) -> setDisplayStatus ( false );
+          ODevice::inst ( )-> setDisplayStatus ( false );
           m_lcd_status = false;
           return true;
         }
         else // We're going to suspend the whole machine
         {
           if ( ( m_disable_suspend > 2 ) &&
                   ( PowerStatusManager::readStatus().acStatus() != PowerStatus::Online ) &&
                   ( !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 setInterval ( int interval )
   {
     setIntervals ( -1, -1, interval );
   }
 
   void setMode ( int mode )
   {
     if ( mode > m_disable_suspend )
       setInterval( -1 );
     m_disable_suspend = mode;
   }
-
-  int backlight ( )
+  
+  void setBacklight ( int bright )
   {
-    if ( m_backlight_bright == -1 ) {
-      // Read from config
-      Config config ( "qpe" );
-      config. setGroup ( "Screensaver" );
-      m_backlight_bright = config. readNumEntry ( "Brightness", 255 );
-    }
-    return m_backlight_bright;
+    // Read from config
+    Config config ( "qpe" );
+    config. setGroup ( "Screensaver" );
+    m_backlight_normal = config. readNumEntry ( "Brightness", 255 );
+
+	setBacklightInternal ( bright );
   }
 
-  void setBacklight ( int 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_bright ? 0 : -1;
+      bright = m_backlight_current ? 0 : -1;
       m_backlight_forcedoff = !bright;
     }
-
-    m_backlight_bright = bright;
-
-    bright = backlight ( );
-    ODevice::inst ( ) -> setDisplayBrightness ( bright );
-
-    m_backlight_bright = 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;
 
   bool m_lcd_status;
 
-  int m_backlight_bright;
+  int m_backlight_normal;
+  int m_backlight_current;
   bool m_backlight_forcedoff;
 };
 
 void DesktopApplication::switchLCD ( bool on )
 {
   if ( qApp ) {
     DesktopApplication *dapp = (DesktopApplication *) qApp;
 
     if ( dapp-> m_screensaver ) {
       if ( on ) {
         dapp-> m_screensaver-> setDisplayState ( true ); 
         dapp-> m_screensaver-> setBacklight ( -3 );
       }
       else {
         dapp-> m_screensaver-> setDisplayState ( false );
       }
     }
   }
 }
 
 
 DesktopApplication::DesktopApplication( int& argc, char **argv, Type appType )
     : QPEApplication( argc, argv, appType )
 {
 
   QTimer * t = new QTimer( this );
   connect( t, SIGNAL( timeout() ), this, SLOT( psTimeout() ) );
   t->start( 10000 );
   ps = 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& ) ) );
 
   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 );
 }
 
 
 DesktopApplication::~DesktopApplication()
 {
   delete ps;
   delete pa;
 }
 
 void DesktopApplication::desktopMessage( const QCString &msg, const QByteArray &data )
 {
   QDataStream stream( data, IO_ReadOnly );
   if ( msg == "keyRegister(int key, QString channel, QString message)" ) {
     int k;
     QString c, m;
     stream >> k;
     stream >> c;
     stream >> m;
 
     qWarning( "KeyRegisterReceived: %i, %s, %s", k, ( const char* ) c, ( const char * ) m );
     keyRegisterList.append( QCopKeyRegister( k, c, m ) );
   }
 }
 
 
 void DesktopApplication::systemMessage( const QCString & msg, const QByteArray & data )
 {
   QDataStream stream ( data, IO_ReadOnly );
 
   if ( msg == "setScreenSaverInterval(int)" ) {
     int time;
     stream >> time;
     m_screensaver-> setInterval( time );
   }
   else if ( msg == "setScreenSaverIntervals(int,int,int)" ) {
     int t1, t2, t3;
     stream >> t1 >> t2 >> t3;
     m_screensaver-> setIntervals( t1, t2, t3 );
   }
   else if ( msg == "setBacklight(int)" ) {
     int bright;
     stream >> bright;
     m_screensaver-> setBacklight( bright );
   }
   else if ( msg == "setScreenSaverMode(int)" ) {
     int mode;
     stream >> mode;
     m_screensaver-> setMode ( mode );
   }
   else if ( msg == "setDisplayState(int)" ) {
     int state;
     stream >> state;
     m_screensaver-> setDisplayState ( state != 0 );
   }
   else if ( msg == "suspend()" ) {
     emit power();
   }
 }
 
 enum MemState { Unknown, VeryLow, Low, Normal } memstate = Unknown;
 
 #ifdef Q_WS_QWS
 bool DesktopApplication::qwsEventFilter( QWSEvent *e )
 {
   qpedesktop->checkMemory();
 
   if ( e->type == QWSEvent::Key ) {
     QWSKeyEvent * ke = ( QWSKeyEvent * ) e;
     if ( !loggedin && ke->simpleData.keycode != Key_F34 )
       return TRUE;
     bool press = ke->simpleData.is_press;
     bool autoRepeat = ke->simpleData.is_auto_repeat;
 
     /*
       app that registers key/message to be sent back to the app, when it doesn't have focus,
       when user presses key, unless keyboard has been requested from app.
       will not send multiple repeats if user holds key
       i.e. one shot
      */
     if ( !keyRegisterList.isEmpty() &&  ke->simpleData.keycode !=0 && press) {
 //        qDebug("<<<<<<<<<<<<<keycode %d", ke->simpleData.keycode);
       KeyRegisterList::Iterator it;
       for ( it = keyRegisterList.begin(); it != keyRegisterList.end(); ++it ) {
         if ( ( *it ).getKeyCode() == ke->simpleData.keycode && !autoRepeat && !keyboardGrabbed() ) {
           if ( press )
             qDebug( "press" );
           else
             qDebug( "release" );
           QCopEnvelope( ( *it ).getChannel().utf8(), ( *it ).getMessage().utf8() );
         }
       }
     }
 
     if ( !keyboardGrabbed() ) {
       if ( ke->simpleData.keycode == Key_F9 ) {
         if ( press )
           emit datebook();
         return TRUE;
       }
       if ( ke->simpleData.keycode == Key_F10 ) {
         if ( !press && cardSendTimer ) {
           emit contacts();
           delete cardSendTimer;
         }
         else if ( press ) {
           cardSendTimer = new QTimer();
           cardSendTimer->start( 2000, TRUE );
           connect( cardSendTimer, SIGNAL( timeout() ), this, SLOT( sendCard() ) );
         }
         return TRUE;
       }
 //       menu key now opens application menu/toolbar
 //         if ( ke->simpleData.keycode == Key_F11 ) {
 //         if ( press ) emit menu();
 //         return TRUE;
 //         }
       
       if ( ke->simpleData.keycode == Key_F12 ) {
         while ( activePopupWidget() )
           activePopupWidget() ->close();
         if ( press )
           emit launch();
         return TRUE;
       }
       if ( ke->simpleData.keycode == Key_F13 ) {
         if ( press )
           emit email();
         return TRUE;
       }
     }
 
     if ( ke->simpleData.keycode == Key_F34 ) {
       if ( press )
         emit power();
       return TRUE;
     }
     // This was used for the iPAQ PowerButton
     // See main.cpp for new KeyboardFilter
     //
     //    if ( ke->simpleData.keycode == Key_SysReq ) {
     //      if ( press ) emit power();
     //      return TRUE;
     //    }
     if ( ke->simpleData.keycode == Key_F35 ) {
       if ( press )
         emit backlight();
       return TRUE;
     }
     if ( ke->simpleData.keycode == Key_F32 ) {
       if ( press )
         QCopEnvelope e( "QPE/Desktop", "startSync()" );
       return TRUE;
     }
     if ( ke->simpleData.keycode == Key_F31 && !ke->simpleData.modifiers ) {
       if ( press )
         emit symbol();
       return TRUE;
     }
     if ( ke->simpleData.keycode == Key_NumLock ) {
       if ( press )
         emit numLockStateToggle();
     }
     if ( ke->simpleData.keycode == Key_CapsLock ) {
       if ( press )
         emit capsLockStateToggle();
     }
     if ( ( press && !autoRepeat ) || ( !press && autoRepeat ) )
       qpedesktop->keyClick();
   }
   else {
     if ( e->type == QWSEvent::Mouse ) {
       QWSMouseEvent * me = ( QWSMouseEvent * ) e;
       static bool up = TRUE;
       if ( me->simpleData.state & LeftButton ) {
         if ( up ) {
           up = FALSE;
           qpedesktop->screenClick();
         }
       }
       else {
         up = TRUE;
       }
     }
   }
 
   return QPEApplication::qwsEventFilter( e );
 }
 #endif
 
 void DesktopApplication::psTimeout()
 {
   qpedesktop->checkMemory(); // in case no events are being generated
 
   *ps = PowerStatusManager::readStatus();
 
   if ( ( ps->batteryStatus() == PowerStatus::VeryLow ) ) {
     pa->alert( tr( "Battery is running very low." ), 6 );
   }
 
   if ( ps->batteryStatus() == PowerStatus::Critical ) {
     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." ), 3 );
   }
 }
 
 
 void DesktopApplication::sendCard()
 {
   delete cardSendTimer;