Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public: (23 commits)
  Workaround webkit deadlock on macos x
  Disable antialiasing for tiled image drawing.
  Ensure visibility of input widget in QML app when doing layout switch
  Def update for gui, openvg, and opengl.
  Revert "Def update."
  Fix trailing whitespace
  Remove unnecessary resizes during orientation change
  Revert "Symbian: Fix QFontInfo::pixelSize()"
  Improving warning messages in QVolatileImage.
  Proper naming for raster pixmap and paintengine on Symbian.
  Def update.
  Handle QVolatileImage-backed pixmaps optimally in drawPixmap().
  Resizable graphicsview's background is drawn incorrectly in splitview
  Add inputcontext reset to orientation switch in Symbian
  QS60Style: QGroupBox is drawn as white box in upcoming Symbian release
  Symbian: Fix QFontInfo::pixelSize()
  Drop-down menu position is altered when Partial VKB is invoked
  Fix SVG icons on softkeys in new Symbian devices
  Fix screen dimensions after orientation change in split screen mode.
  Qmlshadersplugin examples added.
  ...

1 files changed, 14 insertions, 0 deletions

diff --git a/src/gui/s60framework/qs60mainappui.cpp b/src/gui/s60framework/qs60mainappui.cpp
index 4f08fe2..8a8a03d 100644
--- a/src/gui/s60framework/qs60mainappui.cpp
+++ b/src/gui/s60framework/qs60mainappui.cpp
@@ -315,7 +315,21 @@ TRect QS60MainAppUi::ApplicationRect() const
 */
 void QS60MainAppUi::HandleScreenDeviceChangedL()
 {
+    // This function triggers AppUi relayout which also generates
+    // HandleStatusPaneSizeChange(). We don't want to handle
+    // status pane resizes at this point because it causes
+    // Qt window resize and thus EGL surface resize in the middle of
+    // incomplete layout process causing unnecessary overhead.
+    // To prevent status pane resize handling while layout is still
+    // in progress, we guard relayouting with handleStatusPaneResizeNotifications
+    // flag. QSymbianControl checks this flag before doing Qt window
+    // resize due to status pane change.
+    // Eventually when layout is ready, Symbian framework calls
+    // HandleResourceChangeL(KEikDynamicLayoutVariantSwitch) which triggers
+    // resize to Qt window and to its EGL surface.
+    S60->handleStatusPaneResizeNotifications = false;
     QS60MainAppUiBase::HandleScreenDeviceChangedL();
+    S60->handleStatusPaneResizeNotifications = true;
 }
 
 /*!