fix timing bug (only the millisecond part of the timestamp was used)

now the update intervals will actually work.

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=753663

datacontainer.cpp

@@ -53,7 +53,7 @@ void DataContainer::setData(const QString& key, const QVariant& value)
     }
 
     d->dirty = true;
-    d->updateTs = QTime::currentTime().msec();
+    d->updateTs.start();
 }
 
 void DataContainer::clearData()
@@ -82,17 +82,9 @@ void DataContainer::checkForUpdate()
 
 int DataContainer::timeSinceLastUpdate() const
 {
-    int msec = QTime::currentTime().msec();
-    if (msec < d->updateTs) {
-        // we wrapped over midnight here, so return the current
-        // msec's plus the number of msec left in the previous day.
-        // 86400000 is the # of msec in a day
-        //
-        // yes, we assume we don't wrap more than one day here.
-        return msec + (86400000 - d->updateTs);
-    }
-
-    return msec - d->updateTs;
+    //FIXME: we still assume it's been <24h
+    //and ignore possible daylight savings changes
+    return d->updateTs.elapsed();
 }
 
 bool DataContainer::hasUpdates() const

datacontainer_p.h

@@ -32,8 +32,7 @@ class DataContainer::Private
 {
 public:
     Private()
-        : updateTs(0),
-          dirty(false)
+        : dirty(false)
     {}
 
     QObject* signalRelay(const DataContainer* dc, QObject *visualization,
@@ -42,7 +41,7 @@ public:
     DataEngine::Data data;
     QMap<QObject *, SignalRelay *> relayObjects;
     QMap<uint, SignalRelay *> relays;
-    int updateTs;
+    QTime updateTs;
     bool dirty : 1;
 };