ktimetracker/desktoptracker.cpp

   1 /*
   2  *     Copyright (C) 2003 by Tomas Pospisek <tpo@sourcepole.ch>
   3  *                   2007 the ktimetracker developers
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *   GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License along
  16  *   with this program; if not, write to the
  17  *      Free Software Foundation, Inc.
  18  *      51 Franklin Street, Fifth Floor
  19  *      Boston, MA  02110-1301  USA.
  20  *
  21  */
  22
  23 #include "desktoptracker.h"
  24 #include <KDebug>
  25 #include "ktimetracker.h"
  26 #include "ktimetrackerutility.h"
  27 #include <KWindowSystem>
  28 #include <QTimer>
  29
  30 DesktopTracker::DesktopTracker ()
  31 {
  32   // Setup desktop change handling
  33 #ifdef Q_WS_X11
  34     connect( KWindowSystem::self(), SIGNAL(currentDesktopChanged(int)),
  35            this, SLOT(handleDesktopChange(int)) );
  36     mDesktopCount = desktopCount();
  37     mPreviousDesktop = KWindowSystem::self()->currentDesktop()-1;
  38 #else
  39 #ifdef __GNUC__
  40 #warning non-X11 support missing
  41 #endif
  42 #endif
  43     // currentDesktop will return 0 if no window manager is started
  44     if( mPreviousDesktop < 0 ) mPreviousDesktop = 0;
  45     mTimer = new QTimer( this );
  46     mTimer->setSingleShot( true );
  47     connect( mTimer, SIGNAL(timeout()), this, SLOT(changeTimers()) );
  48 }
  49
  50 void DesktopTracker::handleDesktopChange( int desktop )
  51 {
  52     mDesktop = desktop;
  53
  54     // If user changes back and forth between desktops rapidly and frequently,
  55     // the data file can get huge fast if logging is turned on. Then saving
  56     // gets slower, etc. There's no benefit in saving a lot of start/stop
  57     // events that are very small. Wait a bit to make sure the user is settled.
  58     mTimer->start( KTimeTrackerSettings::minActiveTime() * 1000 );
  59 }
  60
  61 void DesktopTracker::changeTimers()
  62 {
  63     --mDesktop; // desktopTracker starts with 0 for desktop 1
  64     // notify start all tasks setup for running on desktop
  65
  66     // stop trackers for mPreviousDesktop
  67     foreach ( Task *task, mDesktopTracker[mPreviousDesktop] )
  68     {
  69         emit leftActiveDesktop( task );
  70     }
  71
  72     // start trackers for desktop
  73     foreach ( Task *task, mDesktopTracker[mDesktop] )
  74     {
  75         emit reachedActiveDesktop( task );
  76     }
  77     mPreviousDesktop = mDesktop;
  78 }
  79
  80 QString DesktopTracker::startTracking()
  81 {
  82     QString err;
  83 #ifdef Q_WS_X11
  84     int currentDesktop = KWindowSystem::self()->currentDesktop() -1;
  85 #else
  86     int currentDesktop = 0;
  87 #endif
  88     if ( currentDesktop < 0 ) currentDesktop = 0;
  89     if ( currentDesktop >= maxDesktops ) err="desktop number too high, desktop tracking will not work";
  90     else
  91         foreach ( Task *task, mDesktopTracker[ currentDesktop ] )
  92         {
  93             emit reachedActiveDesktop( task );
  94         }
  95     return err;
  96 }
  97
  98 void DesktopTracker::registerForDesktops( Task* task, DesktopList desktopList )
  99 {
 100     kDebug(5970) << "Entering function";
 101     // if no desktop is marked, disable auto tracking for this task
 102     if ( desktopList.size() == 0 )
 103     {
 104         for ( int i = 0; i < maxDesktops; ++i )
 105         {
 106             TaskVector *v = &( mDesktopTracker[i] );
 107             TaskVector::iterator tit = qFind( v->begin(), v->end(), task );
 108             if ( tit != v->end() )
 109             mDesktopTracker[i].erase( tit );
 110             // if the task was priviously tracking this desktop then
 111             // emit a signal that is not tracking it any more
 112 #ifdef Q_WS_X11
 113             if ( i == KWindowSystem::self()->currentDesktop() - 1 )
 114                 emit leftActiveDesktop( task );
 115 #endif
 116         }
 117         kDebug(5970) << "Leaving function, desktopList.size=0";
 118         return;
 119     }
 120
 121     // If desktop contains entries then configure desktopTracker
 122     // If a desktop was disabled, it will not be stopped automatically.
 123     // If enabled: Start it now.
 124     if ( desktopList.size() > 0 )
 125     {
 126         for ( int i = 0; i < maxDesktops; ++i )
 127         {
 128             TaskVector& v = mDesktopTracker[i];
 129             TaskVector::iterator tit = qFind( v.begin(), v.end(), task );
 130             // Is desktop i in the desktop list?
 131             if ( qFind( desktopList.begin(), desktopList.end(), i )
 132                 != desktopList.end() )
 133             {
 134                 if ( tit == v.end() )  // not yet in start vector
 135                 v.push_back( task ); // track in desk i
 136             }
 137             else
 138             { // delete it
 139                 if ( tit != v.end() ) // not in start vector any more
 140                 {
 141                     v.erase( tit ); // so we delete it from desktopTracker
 142                     // if the task was priviously tracking this desktop then
 143                     // emit a signal that is not tracking it any more
 144 #ifdef Q_WS_X11
 145                     if( i == KWindowSystem::self()->currentDesktop() -1)
 146                         emit leftActiveDesktop( task );
 147 #endif
 148                 }
 149             }
 150         }
 151         startTracking();
 152     }
 153     kDebug(5970) << "Leaving function";
 154 }
 155