Fix for poor performance during screen orientation switch

Processing the relayout takes longer than 100ms.
Setting priority to low makes the app wait until all other apps have
been processed before it gets scheduled again (over 3 seconds).
By setting priority to background, the app is round-robin scheduled with
the other apps (in 20ms timeslices)

Task-number: QT-1030
Reviewed-by: axis

1 files changed, 2 insertions, 2 deletions

diff --git a/src/corelib/kernel/qeventdispatcher_symbian.cpp b/src/corelib/kernel/qeventdispatcher_symbian.cpp
index acbb7e4..02f77a1 100644
--- a/src/corelib/kernel/qeventdispatcher_symbian.cpp
+++ b/src/corelib/kernel/qeventdispatcher_symbian.cpp
@@ -749,11 +749,11 @@ bool QEventDispatcherSymbian::processEvents ( QEventLoop::ProcessEventsFlags fla
             block = false;
             if (timeState == TimeStarted && time.elapsed() > 100) {
                 priority = m_processHandle.Priority();
-                m_processHandle.SetPriority(EPriorityLow);
+                m_processHandle.SetPriority(EPriorityBackground);
                 time.start();
                 // Slight chance of race condition in the next lines, but nothing fatal
                 // will happen, just wrong priority.
-                if (m_processHandle.Priority() == EPriorityLow) {
+                if (m_processHandle.Priority() == EPriorityBackground) {
                     m_processHandle.SetPriority(priority);
                 }
             }