From 460c52653ab0dcca6f19a4f492ed2c5e4e963ab0 Mon Sep 17 00:00:00 2001
From: toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>
Date: Wed, 25 Nov 2009 17:56:58 +0000
Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
 BUG:215923

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 karm/desktoptracker.cpp | 137 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 karm/desktoptracker.cpp

(limited to 'karm/desktoptracker.cpp')

diff --git a/karm/desktoptracker.cpp b/karm/desktoptracker.cpp
new file mode 100644
index 000000000..52eb67210
--- /dev/null
+++ b/karm/desktoptracker.cpp
@@ -0,0 +1,137 @@
+#include <algorithm>            // std::find
+
+#include <qtimer.h>
+#include <kdebug.h>
+
+#include "desktoptracker.h"
+
+// TODO: Put in config dialog
+const int minimumInterval = 5;  // seconds
+
+DesktopTracker::DesktopTracker ()
+{
+  // Setup desktop change handling
+  connect( &kWinModule, SIGNAL( currentDesktopChanged(int) ),
+           this, SLOT( handleDesktopChange(int) ));
+
+  _desktopCount = kWinModule.numberOfDesktops();
+  _previousDesktop = kWinModule.currentDesktop()-1;
+  // TODO: removed? fixed by Lubos?
+  // currentDesktop will return 0 if no window manager is started
+  if( _previousDesktop < 0 ) _previousDesktop = 0;
+
+  _timer = new QTimer(this);
+  connect( _timer, SIGNAL( timeout() ), this, SLOT( changeTimers() ) );
+}
+
+void DesktopTracker::handleDesktopChange( int desktop )
+{
+  _desktop = desktop;
+
+  // If user changes back and forth between desktops rapidly and frequently,
+  // the data file can get huge fast if logging is turned on.  Then saving
+  // get's slower, etc.  There's no benefit in saving a lot of start/stop 
+  // events that are very small.  Wait a bit to make sure the user is settled.
+  if ( !_timer->start( minimumInterval * 1000, true ) ) changeTimers();
+}
+
+void DesktopTracker::changeTimers()
+{
+  _desktop--; // desktopTracker starts with 0 for desktop 1
+  // notify start all tasks setup for running on desktop
+  TaskVector::iterator it;
+
+  // stop trackers for _previousDesktop
+  TaskVector tv = desktopTracker[_previousDesktop];
+  for (it = tv.begin(); it != tv.end(); ++it) {
+    emit leftActiveDesktop(*it);
+  }
+
+  // start trackers for desktop
+  tv = desktopTracker[_desktop];
+  for (it = tv.begin(); it != tv.end(); ++it) {
+    emit reachedtActiveDesktop(*it);
+  }
+  _previousDesktop = _desktop;
+
+  // emit updateButtons();
+}
+
+QString DesktopTracker::startTracking()
+{
+  QString err;
+  int currentDesktop = kWinModule.currentDesktop() -1;
+  // TODO: removed? fixed by Lubos?
+  // currentDesktop will return 0 if no window manager is started
+  if ( currentDesktop < 0 ) currentDesktop = 0;
+  if ( currentDesktop < maxDesktops )
+  {
+    TaskVector &tv = desktopTracker[ currentDesktop ];
+    TaskVector::iterator tit = tv.begin();
+    while(tit!=tv.end()) 
+    {
+      emit reachedtActiveDesktop(*tit);
+      tit++;
+    }
+  }
+  else err="ETooHighDeskTopNumber";
+  return err;
+}
+
+void DesktopTracker::registerForDesktops( Task* task, DesktopList desktopList)
+{
+  // if no desktop is marked, disable auto tracking for this task
+  if (desktopList.size()==0) {
+    for (int i=0; i<maxDesktops; i++) {
+      TaskVector *v = &(desktopTracker[i]);
+      TaskVector::iterator tit = std::find(v->begin(), v->end(), task);
+      if (tit != v->end())
+        desktopTracker[i].erase(tit);
+        // if the task was priviously tracking this desktop then
+        // emit a signal that is not tracking it any more
+        if( i == kWinModule.currentDesktop() -1)
+          emit leftActiveDesktop(task);
+    }
+
+    return;
+  }
+
+  // If desktop contains entries then configure desktopTracker
+  // If a desktop was disabled, it will not be stopped automatically.
+  // If enabled: Start it now.
+  if (desktopList.size()>0) {
+    for (int i=0; i<maxDesktops; i++) {
+      TaskVector& v = desktopTracker[i];
+      TaskVector::iterator tit = std::find(v.begin(), v.end(), task);
+      // Is desktop i in the desktop list?
+      if ( std::find( desktopList.begin(), desktopList.end(), i)
+           != desktopList.end()) {
+        if (tit == v.end())  // not yet in start vector
+          v.push_back(task); // track in desk i
+      }
+      else { // delete it
+        if (tit != v.end()) // not in start vector any more
+        {
+          v.erase(tit); // so we delete it from desktopTracker
+          // if the task was priviously tracking this desktop then
+          // emit a signal that is not tracking it any more
+          if( i == kWinModule.currentDesktop() -1)
+            emit leftActiveDesktop(task);
+        }
+      }
+    }
+    startTracking();
+  }
+}
+
+void DesktopTracker::printTrackers() {
+  TaskVector::iterator it;
+  for (int i=0; i<maxDesktops; i++) {
+    TaskVector& start = desktopTracker[i];
+    it = start.begin();
+    while (it != start.end()) {
+      it++;
+    }
+  }
+}
+#include "desktoptracker.moc"
-- 
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