Merge remote-tracking branch 'origin/4.8'

17 files changed, 262 insertions, 102 deletions

diff --git a/src/gui/graphicsview/qgraphicslayout.cpp b/src/gui/graphicsview/qgraphicslayout.cpp
index 904a3de..a67ae48 100644
--- a/src/gui/graphicsview/qgraphicslayout.cpp
+++ b/src/gui/graphicsview/qgraphicslayout.cpp
@@ -167,7 +167,7 @@ QGraphicsLayout::QGraphicsLayout(QGraphicsLayoutItem *parent)
                     " neither a QGraphicsWidget nor QGraphicsLayout");
         }
     }
-    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding, QSizePolicy::DefaultType);
+    d_func()->sizePolicy = QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding, QSizePolicy::DefaultType);
     setOwnedByLayout(true);
 }
 
@@ -188,7 +188,7 @@ QGraphicsLayout::QGraphicsLayout(QGraphicsLayoutPrivate &dd, QGraphicsLayoutItem
                     " neither a QGraphicsWidget nor QGraphicsLayout");
         }
     }
-    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding, QSizePolicy::DefaultType);
+    d_func()->sizePolicy = QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding, QSizePolicy::DefaultType);
     setOwnedByLayout(true);
 }
 
@@ -269,12 +269,20 @@ void QGraphicsLayout::activate()
         return;
     Q_ASSERT(!parentItem->isLayout());
 
-    setGeometry(parentItem->contentsRect());    // relayout children
+    if (QGraphicsLayout::instantInvalidatePropagation()) {
+        QGraphicsWidget *parentWidget = static_cast<QGraphicsWidget*>(parentItem);
+        if (!parentWidget->parentLayoutItem()) {
+            // we've reached the topmost widget, resize it
+            bool wasResized = parentWidget->testAttribute(Qt::WA_Resized);
+            parentWidget->resize(parentWidget->size());
+            parentWidget->setAttribute(Qt::WA_Resized, wasResized);
+        }
 
-    // ### bug, should be parentItem ?
-    parentLayoutItem()->updateGeometry();            // bubble up; will set activated to false
-    // ### too many resizes? maybe we should walk up the chain to the
-    // ### top-level layouted layoutItem and call activate there.
+        setGeometry(parentItem->contentsRect());    // relayout children
+    } else {
+        setGeometry(parentItem->contentsRect());    // relayout children
+        parentLayoutItem()->updateGeometry();
+    }
 }
 
 /*!
@@ -300,32 +308,36 @@ bool QGraphicsLayout::isActivated() const
 */
 void QGraphicsLayout::invalidate()
 {
-    // only mark layouts as invalid (activated = false) if we can post a LayoutRequest event.
-    QGraphicsLayoutItem *layoutItem = this;
-    while (layoutItem && layoutItem->isLayout()) {
-        // we could call updateGeometry(), but what if that method
-        // does not call the base implementation? In addition, updateGeometry()
-        // does more than we need.
-        layoutItem->d_func()->sizeHintCacheDirty = true;
-        layoutItem->d_func()->sizeHintWithConstraintCacheDirty = true;
-        layoutItem = layoutItem->parentLayoutItem();
-    }
-    if (layoutItem) {
-        layoutItem->d_func()->sizeHintCacheDirty = true;
-        layoutItem->d_func()->sizeHintWithConstraintCacheDirty = true;
-    }
-
-    bool postIt = layoutItem ? !layoutItem->isLayout() : false;
-    if (postIt) {
-        layoutItem = this;
-        while (layoutItem && layoutItem->isLayout()
-                && static_cast<QGraphicsLayout*>(layoutItem)->d_func()->activated) {
-            static_cast<QGraphicsLayout*>(layoutItem)->d_func()->activated = false;
+    if (QGraphicsLayout::instantInvalidatePropagation()) {
+        updateGeometry();
+    } else {
+        // only mark layouts as invalid (activated = false) if we can post a LayoutRequest event.
+        QGraphicsLayoutItem *layoutItem = this;
+        while (layoutItem && layoutItem->isLayout()) {
+            // we could call updateGeometry(), but what if that method
+            // does not call the base implementation? In addition, updateGeometry()
+            // does more than we need.
+            layoutItem->d_func()->sizeHintCacheDirty = true;
+            layoutItem->d_func()->sizeHintWithConstraintCacheDirty = true;
             layoutItem = layoutItem->parentLayoutItem();
         }
-        if (layoutItem && !layoutItem->isLayout()) {
-            // If a layout has a parent that is not a layout it must be a QGraphicsWidget.
-            QApplication::postEvent(static_cast<QGraphicsWidget *>(layoutItem), new QEvent(QEvent::LayoutRequest));
+        if (layoutItem) {
+            layoutItem->d_func()->sizeHintCacheDirty = true;
+            layoutItem->d_func()->sizeHintWithConstraintCacheDirty = true;
+        }
+
+        bool postIt = layoutItem ? !layoutItem->isLayout() : false;
+        if (postIt) {
+            layoutItem = this;
+            while (layoutItem && layoutItem->isLayout()
+                    && static_cast<QGraphicsLayout*>(layoutItem)->d_func()->activated) {
+                static_cast<QGraphicsLayout*>(layoutItem)->d_func()->activated = false;
+                layoutItem = layoutItem->parentLayoutItem();
+            }
+            if (layoutItem && !layoutItem->isLayout()) {
+                // If a layout has a parent that is not a layout it must be a QGraphicsWidget.
+                QApplication::postEvent(static_cast<QGraphicsWidget *>(layoutItem), new QEvent(QEvent::LayoutRequest));
+            }
         }
     }
 }
@@ -335,12 +347,27 @@ void QGraphicsLayout::invalidate()
 */
 void QGraphicsLayout::updateGeometry()
 {
-    QGraphicsLayoutItem::updateGeometry();
-    if (QGraphicsLayoutItem *parentItem = parentLayoutItem()) {
-        if (parentItem->isLayout()) {
+    Q_D(QGraphicsLayout);
+    if (QGraphicsLayout::instantInvalidatePropagation()) {
+        d->activated = false;
+        QGraphicsLayoutItem::updateGeometry();
+
+        QGraphicsLayoutItem *parentItem = parentLayoutItem();
+        if (!parentItem)
+            return;
+
+        if (parentItem->isLayout())
+            static_cast<QGraphicsLayout *>(parentItem)->invalidate();
+        else
             parentItem->updateGeometry();
-        } else {
-            invalidate();
+    } else {
+        QGraphicsLayoutItem::updateGeometry();
+        if (QGraphicsLayoutItem *parentItem = parentLayoutItem()) {
+            if (parentItem->isLayout()) {
+                parentItem->updateGeometry();
+            } else {
+                invalidate();
+            }
         }
     }
 }
@@ -446,6 +473,50 @@ void QGraphicsLayout::addChildLayoutItem(QGraphicsLayoutItem *layoutItem)
     d->addChildLayoutItem(layoutItem);
 }
 
+static bool g_instantInvalidatePropagation = false;
+
+/*!
+    \internal
+    \since 4.8
+    \see instantInvalidatePropagation
+
+    Calling this function with \a enable set to true will enable a feature that
+    makes propagation of invalidation up to ancestor layout items to be done in
+    one go. It will propagate up the parentLayoutItem() hierarchy until it has
+    reached the root. If the root item is a QGraphicsWidget, it will *post* a
+    layout request to it. When the layout request is consumed it will traverse
+    down the hierarchy of layouts and widgets and activate all layouts that is
+    invalid (not activated). This is the recommended behaviour.
+
+    If not set it will also propagate up the parentLayoutItem() hierarchy, but
+    it will stop at the \i first \i widget it encounters, and post a layout
+    request to the widget. When the layout request is consumed, this might
+    cause it to continue propagation up to the parentLayoutItem() of the
+    widget. It will continue in this fashion until it has reached a widget with
+    no parentLayoutItem(). This strategy might cause drawing artifacts, since
+    it is not done in one go, and the consumption of layout requests might be
+    interleaved by consumption of paint events, which might cause significant
+    flicker.
+    Note, this is not the recommended behavior, but for compatibility reasons
+    this is the default behaviour.
+*/
+void QGraphicsLayout::setInstantInvalidatePropagation(bool enable)
+{
+    g_instantInvalidatePropagation = enable;
+}
+
+/*!
+    \internal
+    \since 4.8
+    \see setInstantInvalidatePropagation
+
+    returns true if the complete widget/layout hierarchy is rearranged in one go.
+*/
+bool QGraphicsLayout::instantInvalidatePropagation()
+{
+    return g_instantInvalidatePropagation;
+}
+
 QT_END_NAMESPACE
 
 #endif //QT_NO_GRAPHICSVIEW
diff --git a/src/gui/graphicsview/qgraphicslayout.h b/src/gui/graphicsview/qgraphicslayout.h
index c622fb8..6031174 100644
--- a/src/gui/graphicsview/qgraphicslayout.h
+++ b/src/gui/graphicsview/qgraphicslayout.h
@@ -76,6 +76,8 @@ public:
     virtual QGraphicsLayoutItem *itemAt(int i) const = 0;
     virtual void removeAt(int index) = 0;
 
+    static void setInstantInvalidatePropagation(bool enable);
+    static bool instantInvalidatePropagation();
 protected:
     QGraphicsLayout(QGraphicsLayoutPrivate &, QGraphicsLayoutItem *);
     void addChildLayoutItem(QGraphicsLayoutItem *layoutItem);
diff --git a/src/gui/graphicsview/qgraphicslayout_p.cpp b/src/gui/graphicsview/qgraphicslayout_p.cpp
index c325602..f73fb6a 100644
--- a/src/gui/graphicsview/qgraphicslayout_p.cpp
+++ b/src/gui/graphicsview/qgraphicslayout_p.cpp
@@ -180,8 +180,13 @@ void QGraphicsLayoutPrivate::activateRecursive(QGraphicsLayoutItem *item)
 {
     if (item->isLayout()) {
         QGraphicsLayout *layout = static_cast<QGraphicsLayout *>(item);
-        if (layout->d_func()->activated)
-            layout->invalidate();
+        if (layout->d_func()->activated) {
+            if (QGraphicsLayout::instantInvalidatePropagation()) {
+                return;
+            } else {
+                layout->invalidate();   // ### LOOKS SUSPICIOUSLY WRONG!!???
+            }
+        }
 
         for (int i = layout->count() - 1; i >= 0; --i) {
             QGraphicsLayoutItem *childItem = layout->itemAt(i);
diff --git a/src/gui/graphicsview/qgraphicslinearlayout.cpp b/src/gui/graphicsview/qgraphicslinearlayout.cpp
index 5591638..40f9b1d 100644
--- a/src/gui/graphicsview/qgraphicslinearlayout.cpp
+++ b/src/gui/graphicsview/qgraphicslinearlayout.cpp
@@ -275,17 +275,13 @@ void QGraphicsLinearLayout::insertItem(int index, QGraphicsLayoutItem *item)
         qWarning("QGraphicsLinearLayout::insertItem: cannot insert itself");
         return;
     }
-    Q_ASSERT(item);
-
-    //the order of the following instructions is very important because
-    //invalidating the layout before adding the child item will make the layout happen
-    //before we try to paint the item
-    invalidate();
     d->addChildLayoutItem(item);
 
+    Q_ASSERT(item);
     d->fixIndex(&index);
     d->engine.insertRow(index, d->orientation);
     new QGridLayoutItem(&d->engine, item, d->gridRow(index), d->gridColumn(index), 1, 1, 0, index);
+    invalidate();
 }
 
 /*!
diff --git a/src/gui/graphicsview/qgraphicswidget.cpp b/src/gui/graphicsview/qgraphicswidget.cpp
index 675a5c5..141e305 100644
--- a/src/gui/graphicsview/qgraphicswidget.cpp
+++ b/src/gui/graphicsview/qgraphicswidget.cpp
@@ -354,8 +354,10 @@ void QGraphicsWidget::setGeometry(const QRectF &rect)
         newGeom = rect;
         newGeom.setSize(rect.size().expandedTo(effectiveSizeHint(Qt::MinimumSize))
                                    .boundedTo(effectiveSizeHint(Qt::MaximumSize)));
-        if (newGeom == d->geom)
-            return;
+
+        if (newGeom == d->geom) {
+            goto relayoutChildrenAndReturn;
+        }
 
         // setPos triggers ItemPositionChange, which can adjust position
         wd->inSetGeometry = 1;
@@ -363,8 +365,9 @@ void QGraphicsWidget::setGeometry(const QRectF &rect)
         wd->inSetGeometry = 0;
         newGeom.moveTopLeft(pos());
 
-        if (newGeom == d->geom)
-           return;
+        if (newGeom == d->geom) {
+            goto relayoutChildrenAndReturn;
+        }
 
          // Update and prepare to change the geometry (remove from index) if the size has changed.
         if (wd->scene) {
@@ -375,35 +378,54 @@ void QGraphicsWidget::setGeometry(const QRectF &rect)
     }
 
     // Update the layout item geometry
-    bool moved = oldPos != pos();
-    if (moved) {
-        // Send move event.
-        QGraphicsSceneMoveEvent event;
-        event.setOldPos(oldPos);
-        event.setNewPos(pos());
-        QApplication::sendEvent(this, &event);
-        if (wd->inSetPos) {
-            //set the new pos
-            d->geom.moveTopLeft(pos());
-            emit geometryChanged();
-            return;
+    {
+        bool moved = oldPos != pos();
+        if (moved) {
+            // Send move event.
+            QGraphicsSceneMoveEvent event;
+            event.setOldPos(oldPos);
+            event.setNewPos(pos());
+            QApplication::sendEvent(this, &event);
+            if (wd->inSetPos) {
+                //set the new pos
+                d->geom.moveTopLeft(pos());
+                emit geometryChanged();
+                goto relayoutChildrenAndReturn;
+            }
+        }
+        QSizeF oldSize = size();
+        QGraphicsLayoutItem::setGeometry(newGeom);
+        // Send resize event
+        bool resized = newGeom.size() != oldSize;
+        if (resized) {
+            QGraphicsSceneResizeEvent re;
+            re.setOldSize(oldSize);
+            re.setNewSize(newGeom.size());
+            if (oldSize.width() != newGeom.size().width())
+                emit widthChanged();
+            if (oldSize.height() != newGeom.size().height())
+                emit heightChanged();
+            QGraphicsLayout *lay = wd->layout;
+            if (QGraphicsLayout::instantInvalidatePropagation()) {
+                if (!lay || lay->isActivated()) {
+                    QApplication::sendEvent(this, &re);
+                }
+            } else {
+                QApplication::sendEvent(this, &re);
+            }
         }
     }
-    QSizeF oldSize = size();
-    QGraphicsLayoutItem::setGeometry(newGeom);
-    // Send resize event
-    bool resized = newGeom.size() != oldSize;
-    if (resized) {
-        QGraphicsSceneResizeEvent re;
-        re.setOldSize(oldSize);
-        re.setNewSize(newGeom.size());
-        if (oldSize.width() != newGeom.size().width())
-            emit widthChanged();
-        if (oldSize.height() != newGeom.size().height())
-            emit heightChanged();
-        QApplication::sendEvent(this, &re);
-    }
+
     emit geometryChanged();
+relayoutChildrenAndReturn:
+    if (QGraphicsLayout::instantInvalidatePropagation()) {
+        if (QGraphicsLayout *lay = wd->layout) {
+            if (!lay->isActivated()) {
+                QEvent layoutRequest(QEvent::LayoutRequest);
+                QApplication::sendEvent(this, &layoutRequest);
+            }
+        }
+    }
 }
 
 /*!
@@ -1052,16 +1074,31 @@ void QGraphicsWidget::updateGeometry()
     QGraphicsLayoutItem *parentItem = parentLayoutItem();
 
     if (parentItem && parentItem->isLayout()) {
-        parentItem->updateGeometry();
+        if (QGraphicsLayout::instantInvalidatePropagation()) {
+            static_cast<QGraphicsLayout *>(parentItem)->invalidate();
+        } else {
+            parentItem->updateGeometry();
+        }
     } else {
         if (parentItem) {
+            // This is for custom layouting
             QGraphicsWidget *parentWid = parentWidget();    //###
             if (parentWid->isVisible())
                 QApplication::postEvent(parentWid, new QEvent(QEvent::LayoutRequest));
+        } else {
+            /**
+             * If this is the topmost widget, post a LayoutRequest event to the widget.
+             * When the event is received, it will start flowing all the way down to the leaf
+             * widgets in one go. This will make a relayout flicker-free.
+             */
+            if (QGraphicsLayout::instantInvalidatePropagation())
+                QApplication::postEvent(static_cast<QGraphicsWidget *>(this), new QEvent(QEvent::LayoutRequest));
+        }
+        if (!QGraphicsLayout::instantInvalidatePropagation()) {
+            bool wasResized = testAttribute(Qt::WA_Resized);
+            resize(size()); // this will restrict the size
+            setAttribute(Qt::WA_Resized, wasResized);
         }
-        bool wasResized = testAttribute(Qt::WA_Resized);
-        resize(size()); // this will restrict the size
-        setAttribute(Qt::WA_Resized, wasResized);
     }
 }
 
diff --git a/src/gui/itemviews/qdatawidgetmapper.cpp b/src/gui/itemviews/qdatawidgetmapper.cpp
index 745ef5a..dac4613 100644
--- a/src/gui/itemviews/qdatawidgetmapper.cpp
+++ b/src/gui/itemviews/qdatawidgetmapper.cpp
@@ -291,7 +291,7 @@ void QDataWidgetMapperPrivate::_q_modelDestroyed()
     \snippet doc/src/snippets/code/src_gui_itemviews_qdatawidgetmapper.cpp 0
 
     After the call to toFirst(), \c mySpinBox displays the value \c{1}, \c myLineEdit
-    displays \c {Nokia Corporation and/or its subsidiary(-ies)} and \c myCountryChooser displays \c{Oslo}. The
+    displays \c{Qt Norway} and \c myCountryChooser displays \c{Oslo}. The
     navigational functions toFirst(), toNext(), toPrevious(), toLast() and setCurrentIndex()
     can be used to navigate in the model and update the widgets with contents from
     the model.
diff --git a/src/gui/kernel/qapplication_s60.cpp b/src/gui/kernel/qapplication_s60.cpp
index 408c3b5..2221500 100644
--- a/src/gui/kernel/qapplication_s60.cpp
+++ b/src/gui/kernel/qapplication_s60.cpp
@@ -2703,6 +2703,9 @@ QS60ThreadLocalData::QS60ThreadLocalData()
 
 QS60ThreadLocalData::~QS60ThreadLocalData()
 {
+    for (int i = 0; i < releaseFuncs.count(); ++i)
+        releaseFuncs[i]();
+    releaseFuncs.clear();
     if (!usingCONEinstances) {
         delete screenDevice;
         wsSession.Close();
diff --git a/src/gui/kernel/qdesktopwidget_qpa.cpp b/src/gui/kernel/qdesktopwidget_qpa.cpp
index cff05f5..6257a8b 100644
--- a/src/gui/kernel/qdesktopwidget_qpa.cpp
+++ b/src/gui/kernel/qdesktopwidget_qpa.cpp
@@ -51,6 +51,8 @@ QT_USE_NAMESPACE
 
 void QDesktopWidgetPrivate::updateScreenList()
 {
+    Q_Q(QDesktopWidget);
+
     QList<QPlatformScreen *> screenList = QApplicationPrivate::platformIntegration()->screens();
     int targetLength = screenList.length();
     int currentLength = screens.length();
@@ -72,19 +74,15 @@ void QDesktopWidgetPrivate::updateScreenList()
     }
 
     QRegion virtualGeometry;
-    bool doVirtualGeometry = QApplicationPrivate::platformIntegration()->isVirtualDesktop();
 
     // update the geometry of each screen widget
     for (int i = 0; i < screens.length(); i++) {
         QRect screenGeometry = screenList.at(i)->geometry();
         screens.at(i)->setGeometry(screenGeometry);
-        if (doVirtualGeometry)
-            virtualGeometry += screenGeometry;
+        virtualGeometry += screenGeometry;
     }
 
-    virtualScreen.setGeometry(virtualGeometry.boundingRect());
-    Q_Q(QDesktopWidget);
-    q->setGeometry(virtualScreen.geometry());
+    q->setGeometry(virtualGeometry.boundingRect());
 }
 
 QDesktopWidget::QDesktopWidget()
@@ -118,8 +116,6 @@ int QDesktopWidget::numScreens() const
 QWidget *QDesktopWidget::screen(int screen)
 {
     Q_D(QDesktopWidget);
-    if (QApplicationPrivate::platformIntegration()->isVirtualDesktop())
-        return &d->virtualScreen;
     if (screen < 0 || screen >= d->screens.length())
         return d->screens.at(0);
     return d->screens.at(screen);
diff --git a/src/gui/kernel/qdesktopwidget_qpa_p.h b/src/gui/kernel/qdesktopwidget_qpa_p.h
index abee8a1..d6ed686 100644
--- a/src/gui/kernel/qdesktopwidget_qpa_p.h
+++ b/src/gui/kernel/qdesktopwidget_qpa_p.h
@@ -76,7 +76,6 @@ public:
     void updateScreenList();
 
     QList<QDesktopScreenWidget *> screens;
-    QDesktopScreenWidget virtualScreen;
 };
 
 #endif // QDESKTOPWIDGET_QPA_P_H
diff --git a/src/gui/kernel/qplatformintegration_qpa.cpp b/src/gui/kernel/qplatformintegration_qpa.cpp
index d559c53..8ff12eb 100644
--- a/src/gui/kernel/qplatformintegration_qpa.cpp
+++ b/src/gui/kernel/qplatformintegration_qpa.cpp
@@ -214,6 +214,7 @@ QPlatformNativeInterface * QPlatformIntegration::nativeInterface() const
 
 bool QPlatformIntegration::hasCapability(Capability cap) const
 {
+    Q_UNUSED(cap);
     return false;
 }
 
diff --git a/src/gui/kernel/qplatformwindow_qpa.cpp b/src/gui/kernel/qplatformwindow_qpa.cpp
index 19bf7a9..f3654b6 100644
--- a/src/gui/kernel/qplatformwindow_qpa.cpp
+++ b/src/gui/kernel/qplatformwindow_qpa.cpp
@@ -150,7 +150,7 @@ void QPlatformWindow::setParent(const QPlatformWindow *parent)
 /*!
   Reimplement to set the window title to \a title
 */
-void QPlatformWindow::setWindowTitle(const QString &title) {}
+void QPlatformWindow::setWindowTitle(const QString &) {}
 
 /*!
   Reimplement to be able to let Qt rais windows to the top of the desktop
diff --git a/src/gui/kernel/qsessionmanager_qpa.cpp b/src/gui/kernel/qsessionmanager_qpa.cpp
index ef532d7..68685b4 100644
--- a/src/gui/kernel/qsessionmanager_qpa.cpp
+++ b/src/gui/kernel/qsessionmanager_qpa.cpp
@@ -42,6 +42,8 @@
 #include <qsessionmanager.h>
 
 #include <private/qobject_p.h>
+#include <qapplication.h>
+
 #ifndef QT_NO_SESSIONMANAGER
 
 QT_BEGIN_NAMESPACE
diff --git a/src/gui/kernel/qt_s60_p.h b/src/gui/kernel/qt_s60_p.h
index 8aba53a..02977ce 100644
--- a/src/gui/kernel/qt_s60_p.h
+++ b/src/gui/kernel/qt_s60_p.h
@@ -97,6 +97,10 @@ static const int qt_symbian_max_screens = 4;
 //this macro exists because EColor16MAP enum value doesn't exist in Symbian OS 9.2
 #define Q_SYMBIAN_ECOLOR16MAP TDisplayMode(13)
 
+class QSymbianTypeFaceExtras;
+typedef QHash<QString, const QSymbianTypeFaceExtras *> QSymbianTypeFaceExtrasHash;
+typedef void (*QThreadLocalReleaseFunc)();
+
 class Q_AUTOTEST_EXPORT QS60ThreadLocalData
 {
 public:
@@ -105,6 +109,8 @@ public:
     bool usingCONEinstances;
     RWsSession wsSession;
     CWsScreenDevice *screenDevice;
+    QSymbianTypeFaceExtrasHash fontData;
+    QVector<QThreadLocalReleaseFunc> releaseFuncs;
 };
 
 class QS60Data
@@ -175,6 +181,8 @@ public:
     inline CWsScreenDevice* screenDevice(const QWidget *widget);
     inline CWsScreenDevice* screenDevice(int screenNumber);
     static inline int screenNumberForWidget(const QWidget *widget);
+    inline QSymbianTypeFaceExtrasHash& fontData();
+    inline void addThreadLocalReleaseFunc(QThreadLocalReleaseFunc func);
     static inline CCoeAppUi* appUi();
     static inline CEikMenuBar* menuBar();
 #ifdef Q_WS_S60
@@ -470,6 +478,24 @@ inline int QS60Data::screenNumberForWidget(const QWidget *widget)
     return qt_widget_private(const_cast<QWidget *>(w))->symbianScreenNumber;
 }
 
+inline QSymbianTypeFaceExtrasHash& QS60Data::fontData()
+{
+    if (!tls.hasLocalData()) {
+        tls.setLocalData(new QS60ThreadLocalData);
+    }
+    return tls.localData()->fontData;
+}
+
+inline void QS60Data::addThreadLocalReleaseFunc(QThreadLocalReleaseFunc func)
+{
+    if (!tls.hasLocalData()) {
+        tls.setLocalData(new QS60ThreadLocalData);
+    }
+    QS60ThreadLocalData *data = tls.localData();
+    if (!data->releaseFuncs.contains(func))
+        data->releaseFuncs.append(func);
+}
+
 inline CCoeAppUi* QS60Data::appUi()
 {
     return CCoeEnv::Static()-> AppUi();
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index ebc9dd5..80d7b85 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -612,7 +612,7 @@ void QWidget::setAutoFillBackground(bool enabled)
     \brief The QWidget class is the base class of all user interface objects.
 
     \ingroup basicwidgets
-    
+
     The widget is the atom of the user interface: it receives mouse, keyboard
     and other events from the window system, and paints a representation of
     itself on the screen. Every widget is rectangular, and they are sorted in a
diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index e28a75a..12bcc4b 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -239,7 +239,16 @@ void QWidgetPrivate::setGeometry_sys(int x, int y, int w, int h, bool isMove)
     if (w != oldSize.width() || h != oldSize.height())
         data.window_state &= ~Qt::WindowMaximized;
 
-    if (extra) {                                // any size restrictions?
+    bool checkExtra = true;
+    if (q->isWindow() && (data.window_state & Qt::WindowFullScreen)) {
+        // Do not modity window size for fullscreen windows, if requested
+        // size is already equal to clientRect.
+        TRect r = static_cast<CEikAppUi*>(S60->appUi())->ClientRect();
+        if (w == r.Width() && h == r.Height())
+            checkExtra = false;
+    }
+
+    if (checkExtra && extra) {  // any size restrictions?
         w = qMin(w,extra->maxw);
         h = qMin(h,extra->maxh);
         w = qMax(w,extra->minw);
diff --git a/src/gui/text/qfontdatabase_s60.cpp b/src/gui/text/qfontdatabase_s60.cpp
index 1db4a7d..3ab1ac8 100644
--- a/src/gui/text/qfontdatabase_s60.cpp
+++ b/src/gui/text/qfontdatabase_s60.cpp
@@ -152,7 +152,6 @@ public:
     COpenFontRasterizer *m_rasterizer;
     mutable QList<const QSymbianTypeFaceExtras *> m_extras;
 
-    mutable QHash<QString, const QSymbianTypeFaceExtras *> m_extrasHash;
     mutable QSet<QString> m_applicationFontFamilies;
 };
 
@@ -255,8 +254,9 @@ void QSymbianFontDatabaseExtrasImplementation::clear()
             static_cast<const QSymbianFontDatabaseExtrasImplementation*>(db->symbianExtras);
     if (!dbExtras)
         return; // initializeDb() has never been called
+    QSymbianTypeFaceExtrasHash &extrasHash = S60->fontData();
     if (QSymbianTypeFaceExtras::symbianFontTableApiAvailable()) {
-        qDeleteAll(dbExtras->m_extrasHash);
+        qDeleteAll(extrasHash);
     } else {
         typedef QList<const QSymbianTypeFaceExtras *>::iterator iterator;
         for (iterator p = dbExtras->m_extras.begin(); p != dbExtras->m_extras.end(); ++p) {
@@ -265,11 +265,16 @@ void QSymbianFontDatabaseExtrasImplementation::clear()
         }
         dbExtras->m_extras.clear();
     }
-    dbExtras->m_extrasHash.clear();
+    extrasHash.clear();
 }
 
 void qt_cleanup_symbianFontDatabase()
 {
+    static bool cleanupDone = false;
+    if (cleanupDone)
+        return;
+    cleanupDone = true;
+
     QFontDatabasePrivate *db = privateDb();
     if (!db)
         return;
@@ -320,9 +325,12 @@ COpenFont* OpenFontFromBitmapFont(const CBitmapFont* aBitmapFont)
 const QSymbianTypeFaceExtras *QSymbianFontDatabaseExtrasImplementation::extras(const QString &aTypeface,
                                                                                bool bold, bool italic) const
 {
+    QSymbianTypeFaceExtrasHash &extrasHash = S60->fontData();
+    if (extrasHash.isEmpty() && QThread::currentThread() != QApplication::instance()->thread())
+        S60->addThreadLocalReleaseFunc(clear);
     const QString typeface = qt_symbian_fontNameWithAppFontMarker(aTypeface);
     const QString searchKey = typeface + QString::number(int(bold)) + QString::number(int(italic));
-    if (!m_extrasHash.contains(searchKey)) {
+    if (!extrasHash.contains(searchKey)) {
         TFontSpec searchSpec(qt_QString2TPtrC(typeface), 1);
         if (bold)
             searchSpec.iFontStyle.SetStrokeWeight(EStrokeWeightBold);
@@ -336,7 +344,7 @@ const QSymbianTypeFaceExtras *QSymbianFontDatabaseExtrasImplementation::extras(c
             QScopedPointer<CFont, CFontFromScreenDeviceReleaser> sFont(font);
             QSymbianTypeFaceExtras *extras = new QSymbianTypeFaceExtras(font);
             sFont.take();
-            m_extrasHash.insert(searchKey, extras);
+            extrasHash.insert(searchKey, extras);
         } else {
             const TInt err = m_store->GetNearestFontToDesignHeightInPixels(font, searchSpec);
             Q_ASSERT(err == KErrNone && font);
@@ -350,20 +358,20 @@ const QSymbianTypeFaceExtras *QSymbianFontDatabaseExtrasImplementation::extras(c
             const TOpenFontFaceAttrib* const attrib = openFont->FaceAttrib();
             const QString foundKey =
                     QString((const QChar*)attrib->FullName().Ptr(), attrib->FullName().Length());
-            if (!m_extrasHash.contains(foundKey)) {
+            if (!extrasHash.contains(foundKey)) {
                 QScopedPointer<CFont, CFontFromFontStoreReleaser> sFont(font);
                 QSymbianTypeFaceExtras *extras = new QSymbianTypeFaceExtras(font, openFont);
                 sFont.take();
                 m_extras.append(extras);
-                m_extrasHash.insert(searchKey, extras);
-                m_extrasHash.insert(foundKey, extras);
+                extrasHash.insert(searchKey, extras);
+                extrasHash.insert(foundKey, extras);
             } else {
                 m_store->ReleaseFont(font);
-                m_extrasHash.insert(searchKey, m_extrasHash.value(foundKey));
+                extrasHash.insert(searchKey, extrasHash.value(foundKey));
             }
         }
     }
-    return m_extrasHash.value(searchKey);
+    return extrasHash.value(searchKey);
 }
 
 void QSymbianFontDatabaseExtrasImplementation::removeAppFontData(
@@ -956,7 +964,7 @@ bool QFontDatabase::removeAllApplicationFonts()
 
 bool QFontDatabase::supportsThreadedFontRendering()
 {
-    return false;
+    return QSymbianTypeFaceExtras::symbianFontTableApiAvailable();
 }
 
 static
diff --git a/src/gui/widgets/qplaintextedit.cpp b/src/gui/widgets/qplaintextedit.cpp
index 9871ed3..51c4ccb 100644
--- a/src/gui/widgets/qplaintextedit.cpp
+++ b/src/gui/widgets/qplaintextedit.cpp
@@ -649,6 +649,11 @@ void QPlainTextEditPrivate::setTopBlock(int blockNumber, int lineNumber, int dx)
         }
         control->topBlock = blockNumber;
         topLine = lineNumber;
+
+        bool vbarSignalsBlocked = vbar->blockSignals(true);
+        vbar->setValue(block.firstLineNumber() + lineNumber);
+        vbar->blockSignals(vbarSignalsBlocked);
+
         if (dx || dy)
             viewport->scroll(q->isRightToLeft() ? -dx : dx, dy);
         else