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:
  Fix crash in QRuntimeGraphicsSystem due to destruction order.
  Fix crash in OpenVG when failing to allocate large VGImages.
  Updated 4.7.0 changelog

4 files changed, 20 insertions, 5 deletions

diff --git a/dist/changes-4.7.0 b/dist/changes-4.7.0
index a5939e3..53e51f8 100644
--- a/dist/changes-4.7.0
+++ b/dist/changes-4.7.0
@@ -371,6 +371,10 @@ Qt for Symbian
  - QSplashScreen
     * [QTBUG-11129] Fixed a hanging bug in QSplashScreen on 3.1 devices.
 
+ - QS60Main... classes
+    * The future compatibility of QS60MainAppUi, QS60MainDocument and
+      QS60MainApplication are improved by removing the need for any 
+      sub-class to link to Avkon functions that may not exist in future.
 
 
 ****************************************************************************
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index e99f6ca..d6fb630 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -1140,6 +1140,8 @@ QApplication::~QApplication()
     QApplicationPrivate::app_style = 0;
     delete QApplicationPrivate::app_icon;
     QApplicationPrivate::app_icon = 0;
+    delete QApplicationPrivate::graphics_system;
+    QApplicationPrivate::graphics_system = 0;
 #ifndef QT_NO_CURSOR
     d->cursor_list.clear();
 #endif
diff --git a/src/gui/painting/qgraphicssystem_runtime.cpp b/src/gui/painting/qgraphicssystem_runtime.cpp
index 2828e9d..a9fbbee 100644
--- a/src/gui/painting/qgraphicssystem_runtime.cpp
+++ b/src/gui/painting/qgraphicssystem_runtime.cpp
@@ -94,7 +94,8 @@ QRuntimePixmapData::QRuntimePixmapData(const QRuntimeGraphicsSystem *gs, PixelTy
 
 QRuntimePixmapData::~QRuntimePixmapData()
 {
-    m_graphicsSystem->removePixmapData(this);
+    if (QApplicationPrivate::graphics_system)
+        m_graphicsSystem->removePixmapData(this);
     delete m_data;
 }
 
@@ -258,7 +259,8 @@ QRuntimeWindowSurface::QRuntimeWindowSurface(const QRuntimeGraphicsSystem *gs, Q
 
 QRuntimeWindowSurface::~QRuntimeWindowSurface()
 {
-    m_graphicsSystem->removeWindowSurface(this);
+    if (QApplicationPrivate::graphics_system)
+        m_graphicsSystem->removeWindowSurface(this);
 }
 
 QPaintDevice *QRuntimeWindowSurface::paintDevice()
diff --git a/src/openvg/qvgimagepool.cpp b/src/openvg/qvgimagepool.cpp
index 78277aa..0c236ea 100644
--- a/src/openvg/qvgimagepool.cpp
+++ b/src/openvg/qvgimagepool.cpp
@@ -154,16 +154,23 @@ bool QVGImagePool::reclaimSpace(VGImageFormat format,
     Q_UNUSED(width);
     Q_UNUSED(height);
 
-    if (data)
+    bool succeeded = false;
+    bool wasInLRU = false;
+    if (data) {
+        wasInLRU = data->inLRU;
         moveToHeadOfLRU(data);
+    }
 
     QVGPixmapData *lrudata = pixmapLRU();
     if (lrudata && lrudata != data) {
         lrudata->reclaimImages();
-        return true;
+        succeeded = true;
     }
 
-    return false;
+    if (data && !wasInLRU)
+        removeFromLRU(data);
+
+    return succeeded;
 }
 
 void QVGImagePool::hibernate()