3 files changed, 20 insertions, 4 deletions
diff --git a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
index 45cfb81..6268d4b 100644
--- a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
+++ b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
@@ -124,14 +124,14 @@ void QMeeGoGraphicsSystemSwitchHandler::addWidget(QWidget *widget)
 
 void QMeeGoGraphicsSystemSwitchHandler::handleMapNotify()
 {
-    if (m_widgets.isEmpty() && QMeeGoGraphicsSystem::switchPolicy == QMeeGoGraphicsSystem::AutomaticSwitch)
+    if (QMeeGoGraphicsSystem::switchPolicy == QMeeGoGraphicsSystem::AutomaticSwitch && visibleWidgets() == 0)
         QTimer::singleShot(0, this, SLOT(switchToMeeGo()));
 }
 
 void QMeeGoGraphicsSystemSwitchHandler::removeWidget(QObject *object)
 {
     m_widgets.removeOne(static_cast<QWidget *>(object));
-    if (m_widgets.isEmpty() && QMeeGoGraphicsSystem::switchPolicy == QMeeGoGraphicsSystem::AutomaticSwitch)
+    if (QMeeGoGraphicsSystem::switchPolicy == QMeeGoGraphicsSystem::AutomaticSwitch && visibleWidgets() == 0)
         QTimer::singleShot(0, this, SLOT(switchToRaster()));
 }
 
diff --git a/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp
index 829996b..3fd5c28 100644
--- a/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp
+++ b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg.cpp
@@ -80,9 +80,15 @@ QWindowSurface *QVGGraphicsSystem::createWindowSurface(QWidget *widget) const
     return new QVGWindowSurface(widget);
 }
 
-void QVGGraphicsSystem::releaseCachedResources()
+#ifdef Q_OS_SYMBIAN
+void QVGGraphicsSystem::releaseCachedGpuResources()
 {
     QVGImagePool::instance()->hibernate();
 }
 
+QGraphicsSystemEx *QVGGraphicsSystem::platformExtension()
+{
+    return this;
+}
+#endif
 QT_END_NAMESPACE
diff --git a/src/plugins/graphicssystems/openvg/qgraphicssystem_vg_p.h b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg_p.h
index 6f8f8dc..c9f1815 100644
--- a/src/plugins/graphicssystems/openvg/qgraphicssystem_vg_p.h
+++ b/src/plugins/graphicssystems/openvg/qgraphicssystem_vg_p.h
@@ -55,9 +55,16 @@
 
 #include <QtGui/private/qgraphicssystem_p.h>
 
+#ifdef Q_OS_SYMBIAN
+#include <QtGui/private/qgraphicssystemex_symbian_p.h>
+#endif
+
 QT_BEGIN_NAMESPACE
 
 class QVGGraphicsSystem : public QGraphicsSystem
+#ifdef Q_OS_SYMBIAN
+    , public QSymbianGraphicsSystemEx
+#endif
 {
 public:
     QVGGraphicsSystem();
@@ -65,7 +72,10 @@ public:
     QPixmapData *createPixmapData(QPixmapData::PixelType type) const;
     QWindowSurface *createWindowSurface(QWidget *widget) const;
 
-    void releaseCachedResources();
+#ifdef Q_OS_SYMBIAN
+    void releaseCachedGpuResources();
+    QGraphicsSystemEx* platformExtension();
+#endif
 };
 
 QT_END_NAMESPACE