Merge remote branch 'qt/master' into lighthouse-master

115 files changed, 1688 insertions, 679 deletions

diff --git a/src/gui/accessible/qaccessible.cpp b/src/gui/accessible/qaccessible.cpp
index 0921bdb..a6d1dbd 100644
--- a/src/gui/accessible/qaccessible.cpp
+++ b/src/gui/accessible/qaccessible.cpp
@@ -409,13 +409,18 @@ static void qAccessibleCleanup()
 /*!
     \typedef QAccessible::InterfaceFactory
 
-    A function pointer type. Use a function with this prototype to install
-    interface factories with installFactory().
+    This is a typedef for a pointer to a function with the following
+    signature:
 
-    The function receives a QObject pointer. If the QObject
-    provides a QAccessibleInterface, it sets the second parameter to
-    point to the corresponding QAccessibleInterface, and returns true;
-    otherwise returns false.
+    \snippet doc/src/snippets/code/src_gui_accessible_qaccessible.cpp 1
+
+    The function receives a QString and a QObject pointer, where the
+    QString is the key identifying the interface. The QObject is used
+    to pass on to the QAccessibleInterface so that it can hold a reference
+    to it.
+
+    If the key and the QObject does not have a corresponding
+    QAccessibleInterface, a null-pointer will be returned.
 
     Installed factories are called by queryAccessibilityInterface() until
     one provides an interface.
diff --git a/src/gui/accessible/qaccessibleobject.cpp b/src/gui/accessible/qaccessibleobject.cpp
index 7b2e7ce..3a4809e 100644
--- a/src/gui/accessible/qaccessibleobject.cpp
+++ b/src/gui/accessible/qaccessibleobject.cpp
@@ -276,7 +276,7 @@ QAccessible::Relation QAccessibleApplication::relationTo(int child, const
 
     for (int i = 0; i < tlw.count(); ++i) {
         QWidget *w = tlw.at(i);
-        QObjectList cl = qFindChildren<QObject *>(w, QString());
+        QObjectList cl = w->findChildren<QObject *>(QString());
         if (cl.contains(o))
             return Ancestor;
     }
diff --git a/src/gui/accessible/qaccessiblewidget.cpp b/src/gui/accessible/qaccessiblewidget.cpp
index 7c13367..5b439a9 100644
--- a/src/gui/accessible/qaccessiblewidget.cpp
+++ b/src/gui/accessible/qaccessiblewidget.cpp
@@ -1015,7 +1015,7 @@ QVariant QAccessibleWidgetEx::invokeMethodEx(Method method, int child, const QVa
     case ListSupportedMethods: {
         QSet<QAccessible::Method> set;
         set << ListSupportedMethods << ForegroundColor << BackgroundColor;
-        return qVariantFromValue(set);
+        return QVariant::fromValue(set);
     }
     case ForegroundColor:
         return widget()->palette().color(widget()->foregroundRole());
diff --git a/src/gui/dialogs/qdialog.cpp b/src/gui/dialogs/qdialog.cpp
index 9e0437c..5a791fc 100644
--- a/src/gui/dialogs/qdialog.cpp
+++ b/src/gui/dialogs/qdialog.cpp
@@ -337,7 +337,7 @@ void QDialogPrivate::setDefault(QPushButton *pushButton)
 {
     Q_Q(QDialog);
     bool hasMain = false;
-    QList<QPushButton*> list = qFindChildren<QPushButton*>(q);
+    QList<QPushButton*> list = q->findChildren<QPushButton*>();
     for (int i=0; i<list.size(); ++i) {
         QPushButton *pb = list.at(i);
         if (pb->window() == q) {
@@ -372,7 +372,7 @@ void QDialogPrivate::setMainDefault(QPushButton *pushButton)
 void QDialogPrivate::hideDefault()
 {
     Q_Q(QDialog);
-    QList<QPushButton*> list = qFindChildren<QPushButton*>(q);
+    QList<QPushButton*> list = q->findChildren<QPushButton*>();
     for (int i=0; i<list.size(); ++i) {
         list.at(i)->setDefault(false);
     }
@@ -675,7 +675,7 @@ void QDialog::keyPressEvent(QKeyEvent *e)
         switch (e->key()) {
         case Qt::Key_Enter:
         case Qt::Key_Return: {
-            QList<QPushButton*> list = qFindChildren<QPushButton*>(this);
+            QList<QPushButton*> list = findChildren<QPushButton*>();
             for (int i=0; i<list.size(); ++i) {
                 QPushButton *pb = list.at(i);
                 if (pb->isDefault() && pb->isVisible()) {
diff --git a/src/gui/dialogs/qfontdialog_mac.mm b/src/gui/dialogs/qfontdialog_mac.mm
index bb8ef3f..9c63dfa 100644
--- a/src/gui/dialogs/qfontdialog_mac.mm
+++ b/src/gui/dialogs/qfontdialog_mac.mm
@@ -131,6 +131,7 @@ const int StyleMask = NSTitledWindowMask | NSClosableWindowMask | NSResizableWin
 - (QFont)qtFont;
 - (void)finishOffWithCode:(NSInteger)result;
 - (void)cleanUpAfterMyself;
+- (void)setSubwindowStacking;
 @end
 
 static QFont qfontForCocoaFont(NSFont *cocoaFont, const QFont &resolveFont)
@@ -187,6 +188,12 @@ static QFont qfontForCocoaFont(NSFont *cocoaFont, const QFont &resolveFont)
         [cancelButton setTarget:self];
     }
 
+    mQtFont = new QFont();
+    return self;
+}
+
+- (void)setSubwindowStacking
+{
 #ifdef QT_MAC_USE_COCOA
     // Stack the native dialog in front of its parent, if any:
     QFontDialog *q = mPriv->fontDialog();
@@ -199,9 +206,6 @@ static QFont qfontForCocoaFont(NSFont *cocoaFont, const QFont &resolveFont)
         }
     }
 #endif
-
-    mQtFont = new QFont();
-    return self;
 }
 
 - (void)dealloc
@@ -610,6 +614,7 @@ void QFontDialogPrivate::createNSFontPanelDelegate()
         [ourPanel setFrame:frameRect display:NO];
         [ourPanel center];
     }
+    [del setSubwindowStacking];
     NSString *title = @"Select font";
     [ourPanel setTitle:title];
 }
diff --git a/src/gui/dialogs/qmessagebox.cpp b/src/gui/dialogs/qmessagebox.cpp
index fe25b0f..f849996 100644
--- a/src/gui/dialogs/qmessagebox.cpp
+++ b/src/gui/dialogs/qmessagebox.cpp
@@ -412,7 +412,7 @@ void QMessageBoxPrivate::updateSize()
 void QMessageBoxPrivate::hideSpecial()
 {
     Q_Q(QMessageBox);
-    QList<QPushButton*> list = qFindChildren<QPushButton*>(q);
+    QList<QPushButton*> list = q->findChildren<QPushButton*>();
         for (int i=0; i<list.size(); ++i) {
             QPushButton *pb = list.at(i);
             QString text = pb->text();
@@ -1266,7 +1266,7 @@ bool QMessageBox::event(QEvent *e)
               (e->type() == QEvent::OkRequest)
               ? QApplication::translate("QMessageBox", "OK")
               : QApplication::translate("QMessageBox", "Help");
-          QList<QPushButton*> list = qFindChildren<QPushButton*>(this);
+          QList<QPushButton*> list = findChildren<QPushButton*>();
           for (int i=0; i<list.size(); ++i) {
               QPushButton *pb = list.at(i);
               if (pb->text() == bName) {
@@ -1513,7 +1513,7 @@ static QMessageBox::StandardButton showNewMessageBox(QWidget *parent,
                                                             int(defaultButton), 0);
 
     QMessageBox msgBox(icon, title, text, QMessageBox::NoButton, parent);
-    QDialogButtonBox *buttonBox = qFindChild<QDialogButtonBox*>(&msgBox);
+    QDialogButtonBox *buttonBox = msgBox.findChild<QDialogButtonBox*>();
     Q_ASSERT(buttonBox != 0);
 
     uint mask = QMessageBox::FirstButton;
diff --git a/src/gui/embedded/qkbdlinuxinput_qws.cpp b/src/gui/embedded/qkbdlinuxinput_qws.cpp
index 6c91a08..f53c444 100644
--- a/src/gui/embedded/qkbdlinuxinput_qws.cpp
+++ b/src/gui/embedded/qkbdlinuxinput_qws.cpp
@@ -138,7 +138,7 @@ QWSLinuxInputKbPrivate::QWSLinuxInputKbPrivate(QWSLinuxInputKeyboardHandler *h,
             // record the original mode so we can restore it again in the destructor.
             ::ioctl(m_tty_fd, KDGKBMODE, &m_orig_kbmode);
 
-            // setting this tranlation mode is even needed in INPUT mode to prevent
+            // setting this translation mode is even needed in INPUT mode to prevent
             // the shell from also interpreting codes, if the process has a tty
             // attached: e.g. Ctrl+C wouldn't copy, but kill the application.
             ::ioctl(m_tty_fd, KDSKBMODE, K_MEDIUMRAW);
diff --git a/src/gui/embedded/qkbdqnx_qws.cpp b/src/gui/embedded/qkbdqnx_qws.cpp
index fbc683e..72d1cb5 100644
--- a/src/gui/embedded/qkbdqnx_qws.cpp
+++ b/src/gui/embedded/qkbdqnx_qws.cpp
@@ -150,7 +150,7 @@ void QWSQnxKeyboardHandler::socketActivated()
 
     // figure out whether it's a press
     bool isPress = packet.data.key_cap & KEY_DOWN;
-    // figure out wheter the key is still pressed and the key event is repeated
+    // figure out whether the key is still pressed and the key event is repeated
     bool isRepeat = packet.data.key_cap & KEY_REPEAT;
 
     Qt::Key key = Qt::Key_unknown;
diff --git a/src/gui/graphicsview/qgraphicsgridlayout.cpp b/src/gui/graphicsview/qgraphicsgridlayout.cpp
index 062b5ac..4104834 100644
--- a/src/gui/graphicsview/qgraphicsgridlayout.cpp
+++ b/src/gui/graphicsview/qgraphicsgridlayout.cpp
@@ -589,6 +589,18 @@ void QGraphicsGridLayout::removeAt(int index)
 }
 
 /*!
+    Removes the layout item \a item without destroying it.
+    Ownership of the item is transferred to the caller.
+
+    \sa addItem()
+*/
+void QGraphicsGridLayout::removeItem(QGraphicsLayoutItem *item)
+{
+    Q_D(QGraphicsGridLayout);
+    int index = d->engine.indexOf(item);
+    removeAt(index);
+}
+/*!
     \reimp
 */
 void QGraphicsGridLayout::invalidate()
@@ -641,7 +653,8 @@ QSizeF QGraphicsGridLayout::sizeHint(Qt::SizeHint which, const QSizeF &constrain
     Q_D(const QGraphicsGridLayout);
     qreal left, top, right, bottom;
     getContentsMargins(&left, &top, &right, &bottom);
-    return d->engine.sizeHint(d->styleInfo(), which , constraint) + QSizeF(left + right, top + bottom);
+    const QSizeF extraMargins(left + right, top + bottom);
+    return d->engine.sizeHint(d->styleInfo(), which , constraint - extraMargins) + extraMargins;
 }
 
 
diff --git a/src/gui/graphicsview/qgraphicsgridlayout.h b/src/gui/graphicsview/qgraphicsgridlayout.h
index ddfb447..d10235c 100644
--- a/src/gui/graphicsview/qgraphicsgridlayout.h
+++ b/src/gui/graphicsview/qgraphicsgridlayout.h
@@ -114,6 +114,7 @@ public:
     int count() const;
     QGraphicsLayoutItem *itemAt(int index) const;
     void removeAt(int index);
+    void removeItem(QGraphicsLayoutItem *item);
 
     void invalidate();
 
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index bf0f280..fdc512e 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -1700,12 +1700,12 @@ void QGraphicsItem::setParentItem(QGraphicsItem *newParent)
         return;
 
     const QVariant newParentVariant(itemChange(QGraphicsItem::ItemParentChange,
-                                               qVariantFromValue<QGraphicsItem *>(newParent)));
-    newParent = qVariantValue<QGraphicsItem *>(newParentVariant);
+                                               QVariant::fromValue<QGraphicsItem *>(newParent)));
+    newParent = qvariant_cast<QGraphicsItem *>(newParentVariant);
     if (newParent == d_ptr->parent)
         return;
 
-    const QVariant thisPointerVariant(qVariantFromValue<QGraphicsItem *>(this));
+    const QVariant thisPointerVariant(QVariant::fromValue<QGraphicsItem *>(this));
     d_ptr->setParentItemHelper(newParent, &newParentVariant, &thisPointerVariant);
 }
 
@@ -2125,7 +2125,7 @@ void QGraphicsItem::setToolTip(const QString &toolTip)
 */
 QCursor QGraphicsItem::cursor() const
 {
-    return qVariantValue<QCursor>(d_ptr->extra(QGraphicsItemPrivate::ExtraCursor));
+    return qvariant_cast<QCursor>(d_ptr->extra(QGraphicsItemPrivate::ExtraCursor));
 }
 
 /*!
@@ -2145,8 +2145,8 @@ QCursor QGraphicsItem::cursor() const
 */
 void QGraphicsItem::setCursor(const QCursor &cursor)
 {
-    const QVariant cursorVariant(itemChange(ItemCursorChange, qVariantFromValue<QCursor>(cursor)));
-    d_ptr->setExtra(QGraphicsItemPrivate::ExtraCursor, qVariantValue<QCursor>(cursorVariant));
+    const QVariant cursorVariant(itemChange(ItemCursorChange, QVariant::fromValue<QCursor>(cursor)));
+    d_ptr->setExtra(QGraphicsItemPrivate::ExtraCursor, qvariant_cast<QCursor>(cursorVariant));
     d_ptr->hasCursor = 1;
     if (d_ptr->scene) {
         d_ptr->scene->d_func()->allItemsUseDefaultCursor = false;
@@ -2272,7 +2272,7 @@ void QGraphicsItemPrivate::setVisibleHelper(bool newVisible, bool explicitly, bo
 
     // Schedule redrawing
     if (update) {
-        QGraphicsItemCache *c = (QGraphicsItemCache *)qVariantValue<void *>(extra(ExtraCacheData));
+        QGraphicsItemCache *c = (QGraphicsItemCache *)qvariant_cast<void *>(extra(ExtraCacheData));
         if (c)
             c->purge();
         if (scene) {
@@ -3259,8 +3259,12 @@ void QGraphicsItemPrivate::setFocusHelper(Qt::FocusReason focusReason, bool clim
     QGraphicsItem *p = parent;
     while (p) {
         if (p->flags() & QGraphicsItem::ItemIsFocusScope) {
+            QGraphicsItem *oldFocusScopeItem = p->d_ptr->focusScopeItem;
             p->d_ptr->focusScopeItem = q_ptr;
             if (!p->focusItem() && !focusFromShow) {
+                if (oldFocusScopeItem)
+                    oldFocusScopeItem->d_ptr->focusScopeItemChange(false);
+                focusScopeItemChange(true);
                 // If you call setFocus on a child of a focus scope that
                 // doesn't currently have a focus item, then stop.
                 return;
@@ -3691,7 +3695,7 @@ void QGraphicsItem::setPos(const QPointF &pos)
     }
 
     // Notify the item that the position is changing.
-    const QVariant newPosVariant(itemChange(ItemPositionChange, qVariantFromValue<QPointF>(pos)));
+    const QVariant newPosVariant(itemChange(ItemPositionChange, QVariant::fromValue<QPointF>(pos)));
     QPointF newPos = newPosVariant.toPointF();
     if (newPos == d_ptr->pos)
         return;
@@ -4045,7 +4049,7 @@ void QGraphicsItem::setTransformOriginPoint(const QPointF &origin)
     if (d_ptr->flags & ItemSendsGeometryChanges) {
         // Notify the item that the origin point is changing.
         const QVariant newOriginVariant(itemChange(ItemTransformOriginPointChange,
-                                                   qVariantFromValue<QPointF>(origin)));
+                                                   QVariant::fromValue<QPointF>(origin)));
         newOrigin = newOriginVariant.toPointF();
     }
 
@@ -4064,7 +4068,7 @@ void QGraphicsItem::setTransformOriginPoint(const QPointF &origin)
 
     // Send post-notification.
     if (d_ptr->flags & ItemSendsGeometryChanges)
-        itemChange(ItemTransformOriginPointHasChanged, qVariantFromValue<QPointF>(newOrigin));
+        itemChange(ItemTransformOriginPointHasChanged, QVariant::fromValue<QPointF>(newOrigin));
 }
 
 /*!
@@ -4326,8 +4330,8 @@ void QGraphicsItem::setMatrix(const QMatrix &matrix, bool combine)
     }
 
     // Notify the item that the transformation matrix is changing.
-    const QVariant newMatrixVariant = qVariantFromValue<QMatrix>(newTransform.toAffine());
-    newTransform = QTransform(qVariantValue<QMatrix>(itemChange(ItemMatrixChange, newMatrixVariant)));
+    const QVariant newMatrixVariant = QVariant::fromValue<QMatrix>(newTransform.toAffine());
+    newTransform = QTransform(qvariant_cast<QMatrix>(itemChange(ItemMatrixChange, newMatrixVariant)));
     if (d_ptr->transformData->transform == newTransform)
         return;
 
@@ -4335,7 +4339,7 @@ void QGraphicsItem::setMatrix(const QMatrix &matrix, bool combine)
     d_ptr->setTransformHelper(newTransform);
 
     // Send post-notification.
-    itemChange(ItemTransformHasChanged, qVariantFromValue<QTransform>(newTransform));
+    itemChange(ItemTransformHasChanged, QVariant::fromValue<QTransform>(newTransform));
 }
 
 /*!
@@ -4376,8 +4380,8 @@ void QGraphicsItem::setTransform(const QTransform &matrix, bool combine)
 
     // Notify the item that the transformation matrix is changing.
     const QVariant newTransformVariant(itemChange(ItemTransformChange,
-                                                  qVariantFromValue<QTransform>(newTransform)));
-    newTransform = qVariantValue<QTransform>(newTransformVariant);
+                                                  QVariant::fromValue<QTransform>(newTransform)));
+    newTransform = qvariant_cast<QTransform>(newTransformVariant);
     if (d_ptr->transformData->transform == newTransform)
         return;
 
@@ -5230,7 +5234,7 @@ QRegion QGraphicsItem::boundingRegion(const QTransform &itemToDeviceTransform) c
 qreal QGraphicsItem::boundingRegionGranularity() const
 {
     return d_ptr->hasBoundingRegionGranularity
-        ? qVariantValue<qreal>(d_ptr->extra(QGraphicsItemPrivate::ExtraBoundingRegionGranularity))
+        ? qvariant_cast<qreal>(d_ptr->extra(QGraphicsItemPrivate::ExtraBoundingRegionGranularity))
         : 0;
 }
 
@@ -5266,7 +5270,7 @@ void QGraphicsItem::setBoundingRegionGranularity(qreal granularity)
     }
     d_ptr->hasBoundingRegionGranularity = 1;
     d_ptr->setExtra(QGraphicsItemPrivate::ExtraBoundingRegionGranularity,
-                    qVariantFromValue<qreal>(granularity));
+                    QVariant::fromValue<qreal>(granularity));
 }
 
 /*!
@@ -5441,7 +5445,7 @@ void QGraphicsItemPrivate::removeChild(QGraphicsItem *child)
 */
 QGraphicsItemCache *QGraphicsItemPrivate::maybeExtraItemCache() const
 {
-    return (QGraphicsItemCache *)qVariantValue<void *>(extra(ExtraCacheData));
+    return (QGraphicsItemCache *)qvariant_cast<void *>(extra(ExtraCacheData));
 }
 
 /*!
@@ -5449,11 +5453,11 @@ QGraphicsItemCache *QGraphicsItemPrivate::maybeExtraItemCache() const
 */
 QGraphicsItemCache *QGraphicsItemPrivate::extraItemCache() const
 {
-    QGraphicsItemCache *c = (QGraphicsItemCache *)qVariantValue<void *>(extra(ExtraCacheData));
+    QGraphicsItemCache *c = (QGraphicsItemCache *)qvariant_cast<void *>(extra(ExtraCacheData));
     if (!c) {
         QGraphicsItemPrivate *that = const_cast<QGraphicsItemPrivate *>(this);
         c = new QGraphicsItemCache;
-        that->setExtra(ExtraCacheData, qVariantFromValue<void *>(c));
+        that->setExtra(ExtraCacheData, QVariant::fromValue<void *>(c));
     }
     return c;
 }
@@ -5463,7 +5467,7 @@ QGraphicsItemCache *QGraphicsItemPrivate::extraItemCache() const
 */
 void QGraphicsItemPrivate::removeExtraItemCache()
 {
-    QGraphicsItemCache *c = (QGraphicsItemCache *)qVariantValue<void *>(extra(ExtraCacheData));
+    QGraphicsItemCache *c = (QGraphicsItemCache *)qvariant_cast<void *>(extra(ExtraCacheData));
     if (c) {
         c->purge();
         delete c;
@@ -5595,6 +5599,7 @@ void QGraphicsItemPrivate::subFocusItemChange()
 */
 void QGraphicsItemPrivate::focusScopeItemChange(bool isSubFocusItem)
 {
+    Q_UNUSED(isSubFocusItem);
 }
 
 /*!
@@ -7753,6 +7758,21 @@ void QGraphicsItemPrivate::resetHeight()
 }
 
 /*!
+  \property QGraphicsObject::children
+  \internal
+*/
+
+/*!
+  \property QGraphicsObject::width
+  \internal
+*/
+
+/*!
+  \property QGraphicsObject::height
+  \internal
+*/
+
+/*!
   \property QGraphicsObject::parent
   \brief the parent of the item
 
@@ -7965,6 +7985,24 @@ void QGraphicsItemPrivate::resetHeight()
 */
 
 /*!
+    \property QGraphicsObject::children
+    \since 4.7
+    \internal
+*/
+
+/*!
+    \property QGraphicsObject::width
+    \since 4.7
+    \internal
+*/
+
+/*!
+    \property QGraphicsObject::height
+    \since 4.7
+    \internal
+*/
+
+/*!
     \class QAbstractGraphicsShapeItem
     \brief The QAbstractGraphicsShapeItem class provides a common base for
     all path items.
diff --git a/src/gui/graphicsview/qgraphicslayoutitem.cpp b/src/gui/graphicsview/qgraphicslayoutitem.cpp
index f4d77f0..bfe734a 100644
--- a/src/gui/graphicsview/qgraphicslayoutitem.cpp
+++ b/src/gui/graphicsview/qgraphicslayoutitem.cpp
@@ -48,6 +48,7 @@
 #include "qgraphicslayoutitem.h"
 #include "qgraphicslayoutitem_p.h"
 #include "qwidget.h"
+#include "qgraphicswidget.h"
 
 #include <QtDebug>
 
@@ -139,9 +140,11 @@ QSizeF *QGraphicsLayoutItemPrivate::effectiveSizeHints(const QSizeF &constraint)
     if (!sizeHintCacheDirty && cachedConstraint == constraint)
         return cachedSizeHints;
 
+    const bool hasConstraint = constraint.width() >= 0 || constraint.height() >= 0;
+
     for (int i = 0; i < Qt::NSizeHints; ++i) {
         cachedSizeHints[i] = constraint;
-        if (userSizeHints)
+        if (userSizeHints && !hasConstraint)
             combineSize(cachedSizeHints[i], userSizeHints[i]);
     }
 
@@ -259,6 +262,52 @@ void QGraphicsLayoutItemPrivate::setSizeComponent(
     q->updateGeometry();
 }
 
+
+bool QGraphicsLayoutItemPrivate::hasHeightForWidth() const
+{
+    Q_Q(const QGraphicsLayoutItem);
+    if (isLayout) {
+        const QGraphicsLayout *l = static_cast<const QGraphicsLayout *>(q);
+        for (int i = l->count() - 1; i >= 0; --i) {
+            if (QGraphicsLayoutItemPrivate::get(l->itemAt(i))->hasHeightForWidth())
+                return true;
+        }
+    } else if (QGraphicsItem *item = q->graphicsItem()) {
+        if (item->isWidget()) {
+            QGraphicsWidget *w = static_cast<QGraphicsWidget *>(item);
+            if (w->layout()) {
+                return QGraphicsLayoutItemPrivate::get(w->layout())->hasHeightForWidth();
+            }
+        }
+    }
+    return q->sizePolicy().hasHeightForWidth();
+}
+
+bool QGraphicsLayoutItemPrivate::hasWidthForHeight() const
+{
+    // enable this code when we add QSizePolicy::hasWidthForHeight() (For 4.8)
+#if 1
+    return false;
+#else
+    Q_Q(const QGraphicsLayoutItem);
+    if (isLayout) {
+        const QGraphicsLayout *l = static_cast<const QGraphicsLayout *>(q);
+        for (int i = l->count() - 1; i >= 0; --i) {
+            if (QGraphicsLayoutItemPrivate::get(l->itemAt(i))->hasWidthForHeight())
+                return true;
+        }
+    } else if (QGraphicsItem *item = q->graphicsItem()) {
+        if (item->isWidget()) {
+            QGraphicsWidget *w = static_cast<QGraphicsWidget *>(item);
+            if (w->layout()) {
+                return QGraphicsLayoutItemPrivate::get(w->layout())->hasWidthForHeight();
+            }
+        }
+    }
+    return q->sizePolicy().hasWidthForHeight();
+#endif
+}
+
 /*!
     \class QGraphicsLayoutItem
     \brief The QGraphicsLayoutItem class can be inherited to allow your custom
diff --git a/src/gui/graphicsview/qgraphicslayoutitem_p.h b/src/gui/graphicsview/qgraphicslayoutitem_p.h
index 15cc7a5..b752e03 100644
--- a/src/gui/graphicsview/qgraphicslayoutitem_p.h
+++ b/src/gui/graphicsview/qgraphicslayoutitem_p.h
@@ -65,6 +65,9 @@ class Q_AUTOTEST_EXPORT QGraphicsLayoutItemPrivate
 public:
     virtual ~QGraphicsLayoutItemPrivate();
     QGraphicsLayoutItemPrivate(QGraphicsLayoutItem *parent, bool isLayout);
+    static QGraphicsLayoutItemPrivate *get(QGraphicsLayoutItem *q) { return q->d_func();}
+    static const QGraphicsLayoutItemPrivate *get(const QGraphicsLayoutItem *q) { return q->d_func();}
+
     void init();
     QSizeF *effectiveSizeHints(const QSizeF &constraint) const;
     QGraphicsItem *parentItem() const;
@@ -73,6 +76,9 @@ public:
     enum SizeComponent { Width, Height };
     void setSizeComponent(Qt::SizeHint which, SizeComponent component, qreal value);
 
+    bool hasHeightForWidth() const;
+    bool hasWidthForHeight() const;
+
     QSizePolicy sizePolicy;
     QGraphicsLayoutItem *parent;
 
diff --git a/src/gui/graphicsview/qgraphicslinearlayout.cpp b/src/gui/graphicsview/qgraphicslinearlayout.cpp
index 37408ef..1588364 100644
--- a/src/gui/graphicsview/qgraphicslinearlayout.cpp
+++ b/src/gui/graphicsview/qgraphicslinearlayout.cpp
@@ -528,7 +528,8 @@ QSizeF QGraphicsLinearLayout::sizeHint(Qt::SizeHint which, const QSizeF &constra
     Q_D(const QGraphicsLinearLayout);
     qreal left, top, right, bottom;
     getContentsMargins(&left, &top, &right, &bottom);
-    return d->engine.sizeHint(d->styleInfo(), which , constraint) + QSizeF(left + right, top + bottom);
+    const QSizeF extraMargins(left + right, top + bottom);
+    return d->engine.sizeHint(d->styleInfo(), which , constraint - extraMargins) + extraMargins;
 }
 
 /*!
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index 48a0093..6d1bb44 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -831,6 +831,11 @@ void QGraphicsScenePrivate::setFocusItemHelper(QGraphicsItem *item,
 #endif //QT_NO_IM
     }
 
+    // This handles the case that the item has been removed from the
+    // scene in response to the FocusOut event.
+    if (item && item->scene() != q)
+        item = 0;
+
     if (item)
         focusItem = item;
     updateInputMethodSensitivityInViews();
@@ -2543,8 +2548,8 @@ void QGraphicsScene::addItem(QGraphicsItem *item)
     // Notify the item that its scene is changing, and allow the item to
     // react.
     const QVariant newSceneVariant(item->itemChange(QGraphicsItem::ItemSceneChange,
-                                                    qVariantFromValue<QGraphicsScene *>(this)));
-    QGraphicsScene *targetScene = qVariantValue<QGraphicsScene *>(newSceneVariant);
+                                                    QVariant::fromValue<QGraphicsScene *>(this)));
+    QGraphicsScene *targetScene = qvariant_cast<QGraphicsScene *>(newSceneVariant);
     if (targetScene != this) {
         if (targetScene && item->d_ptr->scene != targetScene)
             targetScene->addItem(item);
@@ -2955,8 +2960,8 @@ void QGraphicsScene::removeItem(QGraphicsItem *item)
     // Notify the item that it's scene is changing to 0, allowing the item to
     // react.
     const QVariant newSceneVariant(item->itemChange(QGraphicsItem::ItemSceneChange,
-                                                    qVariantFromValue<QGraphicsScene *>(0)));
-    QGraphicsScene *targetScene = qVariantValue<QGraphicsScene *>(newSceneVariant);
+                                                    QVariant::fromValue<QGraphicsScene *>(0)));
+    QGraphicsScene *targetScene = qvariant_cast<QGraphicsScene *>(newSceneVariant);
     if (targetScene != 0 && targetScene != this) {
         targetScene->addItem(item);
         return;
diff --git a/src/gui/graphicsview/qgraphicstransform.cpp b/src/gui/graphicsview/qgraphicstransform.cpp
index 986bee6..bd3f2ef 100644
--- a/src/gui/graphicsview/qgraphicstransform.cpp
+++ b/src/gui/graphicsview/qgraphicstransform.cpp
@@ -345,6 +345,24 @@ void QGraphicsScale::applyTo(QMatrix4x4 *matrix) const
 */
 
 /*!
+    \fn QGraphicsScale::xScaleChanged()
+
+    QGraphicsScale emits this signal when its xScale changes.
+*/
+
+/*!
+    \fn QGraphicsScale::yScaleChanged()
+
+    QGraphicsScale emits this signal when its yScale changes.
+*/
+
+/*!
+    \fn QGraphicsScale::zScaleChanged()
+
+    QGraphicsScale emits this signal when its zScale changes.
+*/    
+
+/*!
     \fn QGraphicsScale::scaleChanged()
 
     This signal is emitted whenever the xScale, yScale, or zScale
@@ -565,6 +583,27 @@ void QGraphicsRotation::applyTo(QMatrix4x4 *matrix) const
     \sa QGraphicsRotation::axis
 */
 
+/*!
+    \fn QGraphicsScale::xScaleChanged()
+    \since 4.7
+
+    This signal is emitted whenever the \l xScale property changes.
+*/
+
+/*!
+    \fn QGraphicsScale::yScaleChanged()
+    \since 4.7
+
+    This signal is emitted whenever the \l yScale property changes.
+*/
+
+/*!
+    \fn QGraphicsScale::zScaleChanged()
+    \since 4.7
+
+    This signal is emitted whenever the \l zScale property changes.
+*/
+
 #include "moc_qgraphicstransform.cpp"
 
 QT_END_NAMESPACE
diff --git a/src/gui/graphicsview/qgraphicswidget.cpp b/src/gui/graphicsview/qgraphicswidget.cpp
index c486c45..0fabd18 100644
--- a/src/gui/graphicsview/qgraphicswidget.cpp
+++ b/src/gui/graphicsview/qgraphicswidget.cpp
@@ -385,12 +385,12 @@ void QGraphicsWidget::setGeometry(const QRectF &rect)
         if (wd->inSetPos) {
             //set the new pos
             d->geom.moveTopLeft(pos());
+            emit geometryChanged();
             return;
         }
     }
     QSizeF oldSize = size();
     QGraphicsLayoutItem::setGeometry(newGeom);
-    emit geometryChanged();
     // Send resize event
     bool resized = newGeom.size() != oldSize;
     if (resized) {
@@ -403,6 +403,7 @@ void QGraphicsWidget::setGeometry(const QRectF &rect)
             emit heightChanged();
         QApplication::sendEvent(this, &re);
     }
+    emit geometryChanged();
 }
 
 /*!
diff --git a/src/gui/graphicsview/qgridlayoutengine.cpp b/src/gui/graphicsview/qgridlayoutengine.cpp
index a084647..98e6781 100644
--- a/src/gui/graphicsview/qgridlayoutengine.cpp
+++ b/src/gui/graphicsview/qgridlayoutengine.cpp
@@ -250,6 +250,7 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz
 
         sumAvailable = targetSize - totalBox.q_preferredSize;
         if (sumAvailable > 0.0) {
+            qreal sumCurrentAvailable = sumAvailable;
             bool somethingHasAMaximumSize = false;
 
             qreal sumPreferredSizes = 0.0;
@@ -308,12 +309,12 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz
                         qreal ultimateFactor = (stretch * ultimateSumPreferredSizes
                                                 / sumStretches)
                                                - (box.q_preferredSize);
-                        qreal transitionalFactor = sumAvailable
+                        qreal transitionalFactor = sumCurrentAvailable
                                                    * (ultimatePreferredSize - box.q_preferredSize)
                                                    / (ultimateSumPreferredSizes
                                                       - sumPreferredSizes);
 
-                        qreal alpha = qMin(sumAvailable,
+                        qreal alpha = qMin(sumCurrentAvailable,
                                            ultimateSumPreferredSizes - sumPreferredSizes);
                         qreal beta = ultimateSumPreferredSizes - sumPreferredSizes;
 
@@ -321,7 +322,7 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz
                                       + ((beta - alpha) * transitionalFactor)) / beta;
                     }
                     sumFactors += factors[i];
-                    if (desired < sumAvailable)
+                    if (desired < sumCurrentAvailable)
                         somethingHasAMaximumSize = true;
 
                     newSizes[i] = -1.0;
@@ -337,12 +338,12 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz
                         continue;
 
                     const QGridLayoutBox &box = boxes.at(start + i);
-                    qreal avail = sumAvailable * factors[i] / sumFactors;
+                    qreal avail = sumCurrentAvailable * factors[i] / sumFactors;
                     if (sizes[i] + avail >= box.q_maximumSize) {
                         newSizes[i] = box.q_maximumSize;
-                        sumAvailable -= box.q_maximumSize - sizes[i];
+                        sumCurrentAvailable -= box.q_maximumSize - sizes[i];
                         sumFactors -= factors[i];
-                        keepGoing = (sumAvailable > 0.0);
+                        keepGoing = (sumCurrentAvailable > 0.0);
                         if (!keepGoing)
                             break;
                     }
@@ -352,7 +353,7 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz
             for (int i = 0; i < n; ++i) {
                 if (newSizes[i] < 0.0) {
                     qreal delta = (sumFactors == 0.0) ? 0.0
-                                                      : sumAvailable * factors[i] / sumFactors;
+                                                      : sumCurrentAvailable * factors[i] / sumFactors;
                     newSizes[i] = sizes[i] + delta;
                 }
             }
@@ -545,6 +546,24 @@ QSizePolicy::Policy QGridLayoutItem::sizePolicy(Qt::Orientation orientation) con
                                            : sizePolicy.verticalPolicy();
 }
 
+/*
+  returns true if the size policy returns true for either hasHeightForWidth()
+  or hasWidthForHeight()
+ */
+bool QGridLayoutItem::hasDynamicConstraint() const
+{
+    return QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasHeightForWidth()
+        || QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasWidthForHeight();
+}
+
+Qt::Orientation QGridLayoutItem::dynamicConstraintOrientation() const
+{
+    if (QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasHeightForWidth())
+        return Qt::Vertical;
+    else //if (QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasWidthForHeight())
+        return Qt::Horizontal;
+}
+
 QSizePolicy::ControlTypes QGridLayoutItem::controlTypes(LayoutSide /* side */) const
 {
     return q_layoutItem->sizePolicy().controlType();
@@ -613,7 +632,14 @@ QRectF QGridLayoutItem::geometryWithin(qreal x, qreal y, qreal width, qreal heig
         qreal cellWidth = width;
         qreal cellHeight = height;
 
-        QSizeF size = effectiveMaxSize().boundedTo(QSizeF(cellWidth, cellHeight));
+        QSize constraint;
+        if (hasDynamicConstraint()) {
+            if (dynamicConstraintOrientation() == Qt::Vertical)
+                constraint.setWidth(cellWidth);
+            else
+                constraint.setHeight(cellHeight);
+        }
+        QSizeF size = effectiveMaxSize(constraint).boundedTo(QSizeF(cellWidth, cellHeight));
         width = size.width();
         height = size.height();
 
@@ -675,13 +701,13 @@ void QGridLayoutItem::insertOrRemoveRows(int row, int delta, Qt::Orientation ori
     Note that effectiveSizeHint does not take sizePolicy into consideration,
     (since it only evaluates the hints, as the name implies)
 */
-QSizeF QGridLayoutItem::effectiveMaxSize() const
+QSizeF QGridLayoutItem::effectiveMaxSize(const QSizeF &constraint) const
 {
-    QSizeF size;
+    QSizeF size = constraint;
     bool vGrow = (sizePolicy(Qt::Vertical) & QSizePolicy::GrowFlag) == QSizePolicy::GrowFlag;
     bool hGrow = (sizePolicy(Qt::Horizontal) & QSizePolicy::GrowFlag) == QSizePolicy::GrowFlag;
     if (!vGrow || !hGrow) {
-        QSizeF pref = layoutItem()->effectiveSizeHint(Qt::PreferredSize);
+        QSizeF pref = layoutItem()->effectiveSizeHint(Qt::PreferredSize, constraint);
         if (!vGrow)
             size.setHeight(pref.height());
         if (!hGrow)
@@ -689,7 +715,7 @@ QSizeF QGridLayoutItem::effectiveMaxSize() const
     }
 
     if (!size.isValid()) {
-        QSizeF maxSize = layoutItem()->effectiveSizeHint(Qt::MaximumSize);
+        QSizeF maxSize = layoutItem()->effectiveSizeHint(Qt::MaximumSize, constraint);
         if (size.width() == -1)
             size.setWidth(maxSize.width());
         if (size.height() == -1)
@@ -775,6 +801,15 @@ QGridLayoutItem *QGridLayoutEngine::itemAt(int index) const
     return q_items.at(index);
 }
 
+int QGridLayoutEngine::indexOf(QGraphicsLayoutItem *item) const
+{
+    for (int i = 0; i < q_items.size(); ++i) {
+        if (item == q_items.at(i)->layoutItem())
+            return i;
+    }
+    return -1;
+}
+
 int QGridLayoutEngine::effectiveFirstRow(Qt::Orientation orientation) const
 {
     ensureEffectiveFirstAndLastRows();
@@ -1010,6 +1045,7 @@ void QGridLayoutEngine::invalidate()
     q_cachedEffectiveLastRows[Ver] = -1;
     q_cachedDataForStyleInfo.invalidate();
     q_cachedSize = QSizeF();
+    q_cachedConstraintOrientation = UnknownConstraint;
 }
 
 static void visualRect(QRectF *geom, Qt::LayoutDirection dir, const QRectF &contentsRect)
@@ -1074,10 +1110,13 @@ QRectF QGridLayoutEngine::cellRect(const QLayoutStyleInfo &styleInfo,
 }
 
 QSizeF QGridLayoutEngine::sizeHint(const QLayoutStyleInfo &styleInfo, Qt::SizeHint which,
-                                   const QSizeF & /* constraint */) const
+                                   const QSizeF &constraint) const
 {
     ensureColumnAndRowData(styleInfo);
 
+    if (hasDynamicConstraint())
+        return dynamicallyConstrainedSizeHint(which, constraint);
+
     switch (which) {
     case Qt::MinimumSize:
         return QSizeF(q_totalBoxes[Hor].q_minimumSize, q_totalBoxes[Ver].q_minimumSize);
@@ -1375,7 +1414,11 @@ void QGridLayoutEngine::fillRowData(QGridLayoutRowData *rowData, const QLayoutSt
                         box = &multiCell.q_box;
                         multiCell.q_stretch = itemStretch;
                     }
-                    box->combine(item->box(orientation));
+                    // Items with constraints are not included in the orientation that
+                    // they are constrained (since it depends on the hfw/constraint function).
+                    // They must be combined at a later stage.
+                    if (!item->hasDynamicConstraint() || orientation != item->dynamicConstraintOrientation())
+                        box->combine(item->box(orientation));
 
                     if (effectiveRowSpan == 1) {
                         QSizePolicy::ControlTypes controls = item->controlTypes(top);
@@ -1532,6 +1575,138 @@ void QGridLayoutEngine::ensureColumnAndRowData(const QLayoutStyleInfo &styleInfo
     q_cachedDataForStyleInfo = styleInfo;
 }
 
+QSizeF QGridLayoutEngine::dynamicallyConstrainedSizeHint(Qt::SizeHint which,
+                                                         const QSizeF &constraint) const
+{
+    Q_ASSERT(hasDynamicConstraint());
+    if (constraint.width() < 0 && constraint.height() < 0) {
+        // Process the hfw / wfh items that we did not process in fillRowData()
+        const Qt::Orientation constraintOrient = constraintOrientation();
+
+        QGridLayoutRowData rowData = constraintOrient == Qt::Vertical ? q_rowData : q_columnData;
+        for (int i = q_items.count() - 1; i >= 0; --i) {
+            QGridLayoutItem *item = q_items.at(i);
+            if (item->hasDynamicConstraint()) {
+                QGridLayoutBox box = item->box(constraintOrient);
+                QGridLayoutBox &rowBox = rowData.boxes[item->firstRow(constraintOrient)];
+                rowBox.combine(box);
+            }
+        }
+
+        QGridLayoutBox totalBoxes[2];
+        if (constraintOrient == Qt::Vertical) {
+            totalBoxes[Hor] = q_columnData.totalBox(0, columnCount());
+            totalBoxes[Ver] = rowData.totalBox(0, rowCount());
+        } else {
+            totalBoxes[Hor] = rowData.totalBox(0, columnCount());
+            totalBoxes[Ver] = q_rowData.totalBox(0, rowCount());
+        }
+        return QSizeF(totalBoxes[Hor].q_sizes(which), totalBoxes[Ver].q_sizes(which));
+    }
+
+
+    Q_ASSERT(constraint.width() >= 0 || constraint.height() >= 0);
+    q_xx.resize(columnCount());
+    q_yy.resize(rowCount());
+    q_widths.resize(columnCount());
+    q_heights.resize(rowCount());
+    q_descents.resize(rowCount());
+
+
+    const Qt::Orientation orientation = constraintOrientation();
+    QGridLayoutRowData *colData;
+    QGridLayoutRowData constrainedRowData;
+    QGridLayoutBox *totalBox;
+    qreal *sizes;
+    qreal *pos;
+    qreal *descents;
+    qreal targetSize;
+    qreal cCount;
+    qreal rCount;
+
+    if (orientation == Qt::Vertical) {
+        // height for width
+        colData = &q_columnData;
+        totalBox = &q_totalBoxes[Hor];
+        sizes = q_widths.data();
+        pos = q_xx.data();
+        descents = 0;
+        targetSize = constraint.width();
+        cCount = columnCount();
+        rCount = rowCount();
+        constrainedRowData = q_rowData;
+    } else {
+        // width for height
+        colData = &q_rowData;
+        totalBox = &q_totalBoxes[Ver];
+        sizes = q_heights.data();
+        pos = q_yy.data();
+        descents = q_descents.data();
+        targetSize = constraint.height();
+        cCount = rowCount();
+        rCount = columnCount();
+        constrainedRowData = q_columnData;
+    }
+    colData->calculateGeometries(0, cCount, targetSize, pos, sizes, descents, *totalBox);
+    for (int i = q_items.count() - 1; i >= 0; --i) {
+        QGridLayoutItem *item = q_items.at(i);
+
+        if (item->hasDynamicConstraint()) {
+            const qreal size = sizes[item->firstColumn(orientation)];
+            QGridLayoutBox box = item->box(orientation, size);
+            QGridLayoutBox &rowBox = constrainedRowData.boxes[item->firstRow(orientation)];
+            rowBox.combine(box);
+        }
+    }
+    const qreal newSize = constrainedRowData.totalBox(0, rCount).q_sizes(which);
+
+    return (orientation == Qt::Vertical) ? QSizeF(targetSize, newSize) : QSizeF(newSize, targetSize);
+}
+
+
+/**
+   returns false if the layout has contradicting constraints (i.e. some items with a horizontal
+   constraint and other items with a vertical constraint)
+ */
+bool QGridLayoutEngine::ensureDynamicConstraint() const
+{
+    if (q_cachedConstraintOrientation == UnknownConstraint) {
+        for (int i = q_items.count() - 1; i >= 0; --i) {
+            QGridLayoutItem *item = q_items.at(i);
+            if (item->hasDynamicConstraint()) {
+                Qt::Orientation itemConstraintOrientation = item->dynamicConstraintOrientation();
+                if (q_cachedConstraintOrientation == UnknownConstraint) {
+                    q_cachedConstraintOrientation = itemConstraintOrientation;
+                } else if (q_cachedConstraintOrientation != itemConstraintOrientation) {
+                    q_cachedConstraintOrientation = UnfeasibleConstraint;
+                    qWarning("QGridLayoutEngine: Unfeasible, cannot mix horizontal and"
+                             " vertical constraint in the same layout");
+                    return false;
+                }
+            }
+        }
+        if (q_cachedConstraintOrientation == UnknownConstraint)
+            q_cachedConstraintOrientation = NoConstraint;
+    }
+    return true;
+}
+
+bool QGridLayoutEngine::hasDynamicConstraint() const
+{
+    if (!ensureDynamicConstraint())
+        return false;
+    return q_cachedConstraintOrientation != NoConstraint;
+}
+
+/*
+ * return value is only valid if hasConstraint() returns true
+ */
+Qt::Orientation QGridLayoutEngine::constraintOrientation() const
+{
+    (void)ensureDynamicConstraint();
+    return (Qt::Orientation)q_cachedConstraintOrientation;
+}
+
 void QGridLayoutEngine::ensureGeometries(const QLayoutStyleInfo &styleInfo,
                                          const QSizeF &size) const
 {
@@ -1544,10 +1719,74 @@ void QGridLayoutEngine::ensureGeometries(const QLayoutStyleInfo &styleInfo,
     q_widths.resize(columnCount());
     q_heights.resize(rowCount());
     q_descents.resize(rowCount());
-    q_columnData.calculateGeometries(0, columnCount(), size.width(), q_xx.data(), q_widths.data(),
-                                     0, q_totalBoxes[Hor]);
-    q_rowData.calculateGeometries(0, rowCount(), size.height(), q_yy.data(), q_heights.data(),
-                                  q_descents.data(), q_totalBoxes[Ver]);
+
+
+    Qt::Orientation orientation = Qt::Vertical;
+    if (hasDynamicConstraint())
+        orientation = constraintOrientation();
+
+    /*
+      In order to do hfw we need to first distribute the columns, then the rows.
+      In order to do wfh we need to first distribute the rows, then the columns.
+
+      If there is no constraint, the order of distributing the rows or columns first is irrelevant.
+      We choose horizontal just to keep the same behaviour as before (however, there shouldn't
+      be any behaviour difference).
+ */
+
+    QGridLayoutRowData *colData;
+    QGridLayoutRowData rowData;
+    qreal *widths;
+    qreal *heights;
+    qreal *xx;
+    qreal *yy;
+    qreal *xdescents = 0;
+    qreal *ydescents = 0;
+    qreal cCount;
+    qreal rCount;
+    QSizeF oSize = size;
+    if (orientation == Qt::Vertical) {
+        // height for width
+        colData = &q_columnData;
+        rowData = q_rowData;
+        widths = q_widths.data();
+        heights = q_heights.data();
+        xx = q_xx.data();
+        yy = q_yy.data();
+        cCount = columnCount();
+        rCount = rowCount();
+        ydescents = q_descents.data();
+    } else {
+        // width for height
+        colData = &q_rowData;
+        rowData = q_columnData;
+        widths = q_heights.data();
+        heights = q_widths.data();
+        xx = q_yy.data();
+        yy = q_xx.data();
+        cCount = rowCount();
+        rCount = columnCount();
+        xdescents = q_descents.data();
+        oSize.transpose();
+    }
+
+    colData->calculateGeometries(0, cCount, oSize.width(), xx, widths,
+                                 xdescents, q_totalBoxes[orientation == Qt::Horizontal]);
+    for (int i = q_items.count() - 1; i >= 0; --i) {
+        QGridLayoutItem *item = q_items.at(i);
+        const int col = item->firstColumn(orientation);
+        const int row = item->firstRow(orientation);
+        if (item->hasDynamicConstraint()) {
+            const qreal sz = widths[col];
+            QGridLayoutBox box = item->box(orientation, sz);
+            rowData.boxes[row].combine(box);
+        }
+    }
+
+    QGridLayoutBox &totalBox = q_totalBoxes[orientation == Qt::Vertical];
+    totalBox = rowData.totalBox(0, rCount);
+    rowData.calculateGeometries(0, rCount, oSize.height(), yy, heights,
+                                 ydescents, totalBox);
 
     q_cachedSize = size;
 }
diff --git a/src/gui/graphicsview/qgridlayoutengine_p.h b/src/gui/graphicsview/qgridlayoutengine_p.h
index 9ac9a8e..55451d7 100644
--- a/src/gui/graphicsview/qgridlayoutengine_p.h
+++ b/src/gui/graphicsview/qgridlayoutengine_p.h
@@ -91,6 +91,14 @@ enum LayoutSide {
     Bottom
 };
 
+enum {
+    NoConstraint,
+    HorizontalConstraint,
+    VerticalConstraint,
+    UnknownConstraint,      // need to update cache
+    UnfeasibleConstraint    // not feasible, it be has some items with Vertical and others with Horizontal constraints
+};
+
 template <typename T>
 class QLayoutParameter
 {
@@ -270,6 +278,10 @@ public:
     inline void setAlignment(Qt::Alignment alignment) { q_alignment = alignment; }
 
     QSizePolicy::Policy sizePolicy(Qt::Orientation orientation) const;
+
+    bool hasDynamicConstraint() const;
+    Qt::Orientation dynamicConstraintOrientation() const;
+
     QSizePolicy::ControlTypes controlTypes(LayoutSide side) const;
     QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
     QGridLayoutBox box(Qt::Orientation orientation, qreal constraint = -1.0) const;
@@ -280,7 +292,7 @@ public:
     void setGeometry(const QRectF &rect);
     void transpose();
     void insertOrRemoveRows(int row, int delta, Qt::Orientation orientation = Qt::Vertical);
-    QSizeF effectiveMaxSize() const;
+    QSizeF effectiveMaxSize(const QSizeF &constraint) const;
 
 #ifdef QT_DEBUG
     void dump(int indent = 0) const;
@@ -326,6 +338,7 @@ public:
     // returns the number of items inserted, which may be less than (rowCount * columnCount)
     int itemCount() const;
     QGridLayoutItem *itemAt(int index) const;
+    int indexOf(QGraphicsLayoutItem *item) const;
 
     int effectiveFirstRow(Qt::Orientation orientation = Qt::Vertical) const;
     int effectiveLastRow(Qt::Orientation orientation = Qt::Vertical) const;
@@ -372,6 +385,14 @@ public:
                     int column, int rowSpan, int columnSpan) const;
     QSizeF sizeHint(const QLayoutStyleInfo &styleInfo, Qt::SizeHint which,
                     const QSizeF &constraint) const;
+
+    // heightForWidth / widthForHeight support
+    QSizeF dynamicallyConstrainedSizeHint(Qt::SizeHint which, const QSizeF &constraint) const;
+    bool ensureDynamicConstraint() const;
+    bool hasDynamicConstraint() const;
+    Qt::Orientation constraintOrientation() const;
+
+
     QSizePolicy::ControlTypes controlTypes(LayoutSide side) const;
     void transpose();
     void setVisualDirection(Qt::LayoutDirection direction);
@@ -405,6 +426,7 @@ private:
     // Lazily computed from the above user input
     mutable int q_cachedEffectiveFirstRows[NOrientations];
     mutable int q_cachedEffectiveLastRows[NOrientations];
+    mutable quint8 q_cachedConstraintOrientation : 2;
 
     // Layout item input
     mutable QLayoutStyleInfo q_cachedDataForStyleInfo;
diff --git a/src/gui/gui.pro b/src/gui/gui.pro
index 41de3f2..ad79130 100644
--- a/src/gui/gui.pro
+++ b/src/gui/gui.pro
@@ -77,20 +77,28 @@ symbian {
     DEPLOYMENT = partial_upgrade $$DEPLOYMENT
 }
 
+neon:*-g++* {
+    DEFINES += QT_HAVE_NEON
+    QMAKE_CXXFLAGS *= -mfpu=neon
+    HEADERS += $$NEON_HEADERS
+    SOURCES += $$NEON_SOURCES
+
+    DRAWHELPER_NEON_ASM_FILES = $$NEON_ASM
+
+    neon_compiler.commands = $$QMAKE_CXX -c
+    neon_compiler.commands += $(CXXFLAGS) $(INCPATH) ${QMAKE_FILE_IN} -o ${QMAKE_FILE_OUT}
+    neon_compiler.dependency_type = TYPE_C
+    neon_compiler.output = ${QMAKE_VAR_OBJECTS_DIR}${QMAKE_FILE_BASE}$${first(QMAKE_EXT_OBJ)}
+    neon_compiler.input = DRAWHELPER_NEON_ASM_FILES
+    neon_compiler.variable_out = OBJECTS
+    neon_compiler.name = compiling[neon] ${QMAKE_FILE_IN}
+    silent:neon_compiler.commands = @echo compiling[neon] ${QMAKE_FILE_IN} && $$neon_compiler.commands
+    QMAKE_EXTRA_COMPILERS += neon_compiler
+}
+
 contains(QMAKE_MAC_XARCH, no) {
     DEFINES += QT_NO_MAC_XARCH
 } else {
-    mmx:DEFINES += QT_HAVE_MMX
-    3dnow:DEFINES += QT_HAVE_3DNOW
-    sse:DEFINES += QT_HAVE_SSE QT_HAVE_MMXEXT
-    sse2:DEFINES += QT_HAVE_SSE2
-    sse3:DEFINES += QT_HAVE_SSE3
-    ssse3:DEFINES += QT_HAVE_SSSE3
-    sse4_1:DEFINES += QT_HAVE_SSE4_1
-    sse4_2:DEFINES += QT_HAVE_SSE4_2
-    avx:DEFINES += QT_HAVE_AVX
-    iwmmxt:DEFINES += QT_HAVE_IWMMXT
-
     win32-g++*|!win32:!*-icc* {
         mmx {
             mmx_compiler.commands = $$QMAKE_CXX -c -Winline
diff --git a/src/gui/image/image.pri b/src/gui/image/image.pri
index 1d89a68..92ea397 100644
--- a/src/gui/image/image.pri
+++ b/src/gui/image/image.pri
@@ -99,5 +99,6 @@ contains(QT_CONFIG, tiff):include($$PWD/qtiffhandler.pri)
 contains(QT_CONFIG, gif):include($$PWD/qgifhandler.pri)
 
 # SIMD
+NEON_SOURCES += image/qimage_neon.cpp
 SSE2_SOURCES += image/qimage_sse2.cpp
 SSSE3_SOURCES += image/qimage_ssse3.cpp
diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index 30cf758..300e04b 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -2022,6 +2022,88 @@ void QImage::fill(uint pixel)
                       0, 0, d->width, d->height, d->bytes_per_line);
 }
 
+
+/*!
+    \fn void QImage::fill(Qt::GlobalColor color)
+
+    \overload
+
+    \since 4.8
+ */
+
+void QImage::fill(Qt::GlobalColor color)
+{
+    fill(QColor(color));
+}
+
+
+
+/*!
+    \fn void QImage::fill(Qt::GlobalColor color)
+
+    \overload
+
+    Fills the entire image with the given \a color.
+
+    If the depth of the image is 1, the image will be filled with 1 if
+    \a color equals Qt::color0; it will otherwise be filled with 0.
+
+    If the depth of the image is 8, the image will be filled with the
+    index corresponding the \a color in the color table if present; it
+    will otherwise be filled with 0.|
+
+    \since 4.8
+*/
+
+void QImage::fill(const QColor &color)
+{
+    if (!d)
+        return;
+    detach();
+
+    // In case we run out of memory
+    if (!d)
+        return;
+
+    if (d->depth == 32) {
+        uint pixel = color.rgba();
+        if (d->format == QImage::Format_ARGB32_Premultiplied)
+            pixel = PREMUL(pixel);
+        fill((uint) pixel);
+
+    } else if (d->depth == 16 && d->format == QImage::Format_RGB16) {
+        qrgb565 p(color.rgba());
+        fill((uint) p.rawValue());
+
+    } else if (d->depth == 1) {
+        if (color == Qt::color1)
+            fill((uint) 1);
+        else
+            fill((uint) 0);
+
+    } else if (d->depth == 8) {
+        uint pixel = 0;
+        for (int i=0; i<d->colortable.size(); ++i) {
+            if (color.rgba() == d->colortable.at(i)) {
+                pixel = i;
+                break;
+            }
+        }
+        fill(pixel);
+
+    } else {
+        QPainter p(this);
+        p.setCompositionMode(QPainter::CompositionMode_Source);
+        p.fillRect(rect(), color);
+    }
+
+}
+
+
+
+
+
+
 /*!
     Inverts all pixel values in the image.
 
@@ -3769,6 +3851,14 @@ void qInitImageConversions()
         converter_map[QImage::Format_RGB888][QImage::Format_ARGB32_Premultiplied] = convert_RGB888_to_RGB32_ssse3;
     }
 #endif
+#ifdef QT_HAVE_NEON
+    if (features & NEON) {
+        extern void convert_RGB888_to_RGB32_neon(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags);
+        converter_map[QImage::Format_RGB888][QImage::Format_RGB32] = convert_RGB888_to_RGB32_neon;
+        converter_map[QImage::Format_RGB888][QImage::Format_ARGB32] = convert_RGB888_to_RGB32_neon;
+        converter_map[QImage::Format_RGB888][QImage::Format_ARGB32_Premultiplied] = convert_RGB888_to_RGB32_neon;
+    }
+#endif
 }
 
 /*!
@@ -4829,7 +4919,7 @@ QImage QImage::rgbSwapped() const
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
             uint *q = (uint*)res.scanLine(i);
-            uint *p = (uint*)scanLine(i);
+            uint *p = (uint*)constScanLine(i);
             uint *end = p + d->width;
             while (p < end) {
                 *q = ((*p << 16) & 0xff0000) | ((*p >> 16) & 0xff) | (*p & 0xff00ff00);
@@ -4843,7 +4933,7 @@ QImage QImage::rgbSwapped() const
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
             ushort *q = (ushort*)res.scanLine(i);
-            const ushort *p = (const ushort*)scanLine(i);
+            const ushort *p = (const ushort*)constScanLine(i);
             const ushort *end = p + d->width;
             while (p < end) {
                 *q = ((*p << 11) & 0xf800) | ((*p >> 11) & 0x1f) | (*p & 0x07e0);
@@ -4856,12 +4946,15 @@ QImage QImage::rgbSwapped() const
         res = QImage(d->width, d->height, d->format);
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
-            quint8 *p = (quint8*)scanLine(i);
+            const quint8 *p = constScanLine(i);
+            quint8 *q = res.scanLine(i);
             const quint8 *end = p + d->width * sizeof(qargb8565);
             while (p < end) {
-                quint16 *q = reinterpret_cast<quint16*>(p + 1);
-                *q = ((*q << 11) & 0xf800) | ((*q >> 11) & 0x1f) | (*q & 0x07e0);
+                q[0] = p[0];
+                q[1] = (p[1] & 0xe0) | (p[2] >> 3);
+                q[2] = (p[2] & 0x07) | (p[1] << 3);
                 p += sizeof(qargb8565);
+                q += sizeof(qargb8565);
             }
         }
         break;
@@ -4870,7 +4963,7 @@ QImage QImage::rgbSwapped() const
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
             qrgb666 *q = reinterpret_cast<qrgb666*>(res.scanLine(i));
-            const qrgb666 *p = reinterpret_cast<const qrgb666*>(scanLine(i));
+            const qrgb666 *p = reinterpret_cast<const qrgb666*>(constScanLine(i));
             const qrgb666 *end = p + d->width;
             while (p < end) {
                 const QRgb rgb = quint32(*p++);
@@ -4882,12 +4975,15 @@ QImage QImage::rgbSwapped() const
         res = QImage(d->width, d->height, d->format);
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
-            qargb6666 *q = reinterpret_cast<qargb6666*>(res.scanLine(i));
-            const qargb6666 *p = reinterpret_cast<const qargb6666*>(scanLine(i));
-            const qargb6666 *end = p + d->width;
+            const quint8 *p = constScanLine(i);
+            const quint8 *end = p + d->width * sizeof(qargb6666);
+            quint8 *q = res.scanLine(i);
             while (p < end) {
-                const QRgb rgb = quint32(*p++);
-                *q++ = qRgba(qBlue(rgb), qGreen(rgb), qRed(rgb), qAlpha(rgb));
+                q[0] = (p[1] >> 4) | ((p[2] & 0x3) << 4) | (p[0] & 0xc0);
+                q[1] = (p[1] & 0xf) | (p[0] << 4);
+                q[2] = (p[2] & 0xfc) | ((p[0] >> 4) & 0x3);
+                p += sizeof(qargb6666);
+                q += sizeof(qargb6666);
             }
         }
         break;
@@ -4895,11 +4991,11 @@ QImage QImage::rgbSwapped() const
         res = QImage(d->width, d->height, d->format);
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
-            ushort *q = (ushort*)res.scanLine(i);
-            const ushort *p = (const ushort*)scanLine(i);
-            const ushort *end = p + d->width;
+            quint16 *q = (quint16*)res.scanLine(i);
+            const quint16 *p = (const quint16*)constScanLine(i);
+            const quint16 *end = p + d->width;
             while (p < end) {
-                *q = ((*p << 10) & 0x7800) | ((*p >> 10) & 0x1f) | (*p & 0x83e0);
+                *q = ((*p << 10) & 0x7c00) | ((*p >> 10) & 0x1f) | (*p & 0x3e0);
                 p++;
                 q++;
             }
@@ -4909,12 +5005,15 @@ QImage QImage::rgbSwapped() const
         res = QImage(d->width, d->height, d->format);
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
-            quint8 *p = (quint8*)scanLine(i);
+            const quint8 *p = constScanLine(i);
+            quint8 *q = res.scanLine(i);
             const quint8 *end = p + d->width * sizeof(qargb8555);
             while (p < end) {
-                quint16 *q = reinterpret_cast<quint16*>(p + 1);
-                *q = ((*q << 10) & 0x7800) | ((*q >> 10) & 0x1f) | (*q & 0x83e0);
+                q[0] = p[0];
+                q[1] = (p[1] & 0xe0) | (p[2] >> 2);
+                q[2] = (p[2] & 0x03) | ((p[1] << 2) & 0x7f);
                 p += sizeof(qargb8555);
+                q += sizeof(qargb8555);
             }
         }
         break;
@@ -4922,8 +5021,8 @@ QImage QImage::rgbSwapped() const
         res = QImage(d->width, d->height, d->format);
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
-            quint8 *q = reinterpret_cast<quint8*>(res.scanLine(i));
-            const quint8 *p = reinterpret_cast<const quint8*>(scanLine(i));
+            quint8 *q = res.scanLine(i);
+            const quint8 *p = constScanLine(i);
             const quint8 *end = p + d->width * sizeof(qrgb888);
             while (p < end) {
                 q[0] = p[2];
@@ -4935,32 +5034,17 @@ QImage QImage::rgbSwapped() const
         }
         break;
     case Format_RGB444:
-        res = QImage(d->width, d->height, d->format);
-        QIMAGE_SANITYCHECK_MEMORY(res);
-        for (int i = 0; i < d->height; i++) {
-            quint8 *q = reinterpret_cast<quint8*>(res.scanLine(i));
-            const quint8 *p = reinterpret_cast<const quint8*>(scanLine(i));
-            const quint8 *end = p + d->width * sizeof(qrgb444);
-            while (p < end) {
-                q[0] = (p[0] & 0xf0) | ((p[1] & 0x0f) << 8);
-                q[1] = ((p[0] & 0x0f) >> 8) | (p[1] & 0xf0);
-                q += sizeof(qrgb444);
-                p += sizeof(qrgb444);
-            }
-        }
-        break;
     case Format_ARGB4444_Premultiplied:
         res = QImage(d->width, d->height, d->format);
         QIMAGE_SANITYCHECK_MEMORY(res);
         for (int i = 0; i < d->height; i++) {
-            quint8 *q = reinterpret_cast<quint8*>(res.scanLine(i));
-            const quint8 *p = reinterpret_cast<const quint8*>(scanLine(i));
-            const quint8 *end = p + d->width * sizeof(qargb4444);
+            quint16 *q = reinterpret_cast<quint16*>(res.scanLine(i));
+            const quint16 *p = reinterpret_cast<const quint16*>(constScanLine(i));
+            const quint16 *end = p + d->width;
             while (p < end) {
-                q[0] = (p[0] & 0xf0) | ((p[1] & 0x0f) << 8);
-                q[1] = ((p[0] & 0x0f) >> 8) | (p[1] & 0xf0);
-                q += sizeof(qargb4444);
-                p += sizeof(qargb4444);
+                *q = (*p & 0xf0f0) | ((*p & 0x0f) << 8) | ((*p & 0xf00) >> 8);
+                p++;
+                q++;
             }
         }
         break;
diff --git a/src/gui/image/qimage.h b/src/gui/image/qimage.h
index f4d1023..db7a4cc 100644
--- a/src/gui/image/qimage.h
+++ b/src/gui/image/qimage.h
@@ -210,6 +210,9 @@ public:
     void setColorTable(const QVector<QRgb> colors);
 
     void fill(uint pixel);
+    void fill(const QColor &color);
+    void fill(Qt::GlobalColor color);
+
 
     bool hasAlphaChannel() const;
     void setAlphaChannel(const QImage &alphaChannel);
diff --git a/src/gui/image/qimage_neon.cpp b/src/gui/image/qimage_neon.cpp
new file mode 100644
index 0000000..15bf472
--- /dev/null
+++ b/src/gui/image/qimage_neon.cpp
@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qimage.h>
+#include <private/qimage_p.h>
+#include <private/qsimd_p.h>
+
+#ifdef QT_HAVE_NEON
+
+QT_BEGIN_NAMESPACE
+
+Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_neon(quint32 *dst, const uchar *src, int len)
+{
+    if (!len)
+        return;
+
+    const quint32 *const end = dst + len;
+
+    // align dst on 64 bits
+    const int offsetToAlignOn8Bytes = (reinterpret_cast<quintptr>(dst) >> 2) & 0x1;
+    for (int i = 0; i < offsetToAlignOn8Bytes; ++i) {
+        *dst++ = qRgb(src[0], src[1], src[2]);
+        src += 3;
+    }
+
+    if ((len - offsetToAlignOn8Bytes) >= 8) {
+        const quint32 *const simdEnd = end - 7;
+        register uint8x8_t fullVector asm ("d3") = vdup_n_u8(0xff);
+        do {
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+            asm volatile (
+                "vld3.8     { d4, d5, d6 }, [%[SRC]] !\n\t"
+                "vst4.8     { d3, d4, d5, d6 }, [%[DST],:64] !\n\t"
+                : [DST]"+r" (dst), [SRC]"+r" (src)
+                : "w"(fullVector)
+                : "memory", "d4", "d5", "d6"
+            );
+#else
+            asm volatile (
+                "vld3.8     { d0, d1, d2 }, [%[SRC]] !\n\t"
+                "vswp d0, d2\n\t"
+                "vst4.8     { d0, d1, d2, d3 }, [%[DST],:64] !\n\t"
+                : [DST]"+r" (dst), [SRC]"+r" (src)
+                : "w"(fullVector)
+                : "memory", "d0", "d1", "d2"
+            );
+#endif
+        } while (dst < simdEnd);
+    }
+
+    while (dst != end) {
+        *dst++ = qRgb(src[0], src[1], src[2]);
+        src += 3;
+    }
+}
+
+void convert_RGB888_to_RGB32_neon(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags)
+{
+    Q_ASSERT(src->format == QImage::Format_RGB888);
+    Q_ASSERT(dest->format == QImage::Format_RGB32 || dest->format == QImage::Format_ARGB32 || dest->format == QImage::Format_ARGB32_Premultiplied);
+    Q_ASSERT(src->width == dest->width);
+    Q_ASSERT(src->height == dest->height);
+
+    const uchar *src_data = (uchar *) src->data;
+    quint32 *dest_data = (quint32 *) dest->data;
+
+    for (int i = 0; i < src->height; ++i) {
+        qt_convert_rgb888_to_rgb32_neon(dest_data, src_data, src->width);
+        src_data += src->bytes_per_line;
+        dest_data = (quint32 *)((uchar*)dest_data + dest->bytes_per_line);
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_HAVE_NEON
diff --git a/src/gui/image/qimage_ssse3.cpp b/src/gui/image/qimage_ssse3.cpp
index 1c664f2..9aed011 100644
--- a/src/gui/image/qimage_ssse3.cpp
+++ b/src/gui/image/qimage_ssse3.cpp
@@ -45,13 +45,12 @@
 
 #ifdef QT_HAVE_SSSE3
 
-#include <stdio.h>
 QT_BEGIN_NAMESPACE
 
 // Convert a scanline of RGB888 (src) to RGB32 (dst)
 // src must be at least len * 3 bytes
 // dst must be at least len * 4 bytes
-inline void convert_rgb888_to_rgb32_ssse3(quint32 *dst, const uchar *src, int len)
+Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_ssse3(quint32 *dst, const uchar *src, int len)
 {
     quint32 *const end = dst + len;
 
@@ -139,7 +138,7 @@ void convert_RGB888_to_RGB32_ssse3(QImageData *dest, const QImageData *src, Qt::
     quint32 *dest_data = (quint32 *) dest->data;
 
     for (int i = 0; i < src->height; ++i) {
-        convert_rgb888_to_rgb32_ssse3(dest_data, src_data, src->width);
+        qt_convert_rgb888_to_rgb32_ssse3(dest_data, src_data, src->width);
         src_data += src->bytes_per_line;
         dest_data = (quint32 *)((uchar*)dest_data + dest->bytes_per_line);
     }
diff --git a/src/gui/image/qimagereader.cpp b/src/gui/image/qimagereader.cpp
index ec56af2..03ee902 100644
--- a/src/gui/image/qimagereader.cpp
+++ b/src/gui/image/qimagereader.cpp
@@ -1092,7 +1092,7 @@ QColor QImageReader::backgroundColor() const
     if (!d->initHandler())
         return QColor();
     if (d->handler->supportsOption(QImageIOHandler::BackgroundColor))
-        return qVariantValue<QColor>(d->handler->option(QImageIOHandler::BackgroundColor));
+        return qvariant_cast<QColor>(d->handler->option(QImageIOHandler::BackgroundColor));
     return QColor();
 }
 
diff --git a/src/gui/image/qjpeghandler.cpp b/src/gui/image/qjpeghandler.cpp
index 972dd65..eda5efb 100644
--- a/src/gui/image/qjpeghandler.cpp
+++ b/src/gui/image/qjpeghandler.cpp
@@ -45,6 +45,7 @@
 #include <qvariant.h>
 #include <qvector.h>
 #include <qbuffer.h>
+#include <private/qsimd_p.h>
 
 #include <stdio.h>      // jpeglib needs this to be pre-included
 #include <setjmp.h>
@@ -75,6 +76,19 @@ extern "C" {
 
 QT_BEGIN_NAMESPACE
 
+void QT_FASTCALL convert_rgb888_to_rgb32_C(quint32 *dst, const uchar *src, int len)
+{
+    // Expand 24->32 bpp.
+    for (int i = 0; i < len; ++i) {
+        *dst++ = qRgb(src[0], src[1], src[2]);
+        src += 3;
+    }
+}
+
+typedef void (QT_FASTCALL *Rgb888ToRgb32Converter)(quint32 *dst, const uchar *src, int len);
+
+static Rgb888ToRgb32Converter rgb888ToRgb32ConverterPtr = convert_rgb888_to_rgb32_C;
+
 struct my_error_mgr : public jpeg_error_mgr {
     jmp_buf setjmp_buffer;
 };
@@ -393,13 +407,9 @@ static bool read_jpeg_image(QImage *outImage,
                     continue;   // Haven't reached the starting line yet.
 
                 if (info->output_components == 3) {
-                    // Expand 24->32 bpp.
                     uchar *in = rows[0] + clip.x() * 3;
                     QRgb *out = (QRgb*)outImage->scanLine(y);
-                    for (int i = 0; i < clip.width(); ++i) {
-                        *out++ = qRgb(in[0], in[1], in[2]);
-                        in += 3;
-                    }
+                    rgb888ToRgb32ConverterPtr(out, in, clip.width());
                 } else if (info->out_color_space == JCS_CMYK) {
                     // Convert CMYK->RGB.
                     uchar *in = rows[0] + clip.x() * 4;
@@ -793,6 +803,22 @@ bool QJpegHandlerPrivate::read(QImage *image)
 QJpegHandler::QJpegHandler()
     : d(new QJpegHandlerPrivate(this))
 {
+    const uint features = qDetectCPUFeatures();
+    Q_UNUSED(features);
+#if defined(QT_HAVE_NEON)
+    // from qimage_neon.cpp
+    Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_neon(quint32 *dst, const uchar *src, int len);
+
+    if (features & NEON)
+        rgb888ToRgb32ConverterPtr = qt_convert_rgb888_to_rgb32_neon;
+#endif // QT_HAVE_NEON
+#if defined(QT_HAVE_SSSE3)
+    // from qimage_ssse3.cpp
+    Q_GUI_EXPORT void QT_FASTCALL qt_convert_rgb888_to_rgb32_ssse3(quint32 *dst, const uchar *src, int len);
+
+    if (features & SSSE3)
+        rgb888ToRgb32ConverterPtr = qt_convert_rgb888_to_rgb32_ssse3;
+#endif // QT_HAVE_SSSE3
 }
 
 QJpegHandler::~QJpegHandler()
diff --git a/src/gui/image/qmnghandler.cpp b/src/gui/image/qmnghandler.cpp
index cf53af0..40f1b54 100644
--- a/src/gui/image/qmnghandler.cpp
+++ b/src/gui/image/qmnghandler.cpp
@@ -481,7 +481,7 @@ void QMngHandler::setOption(ImageOption option, const QVariant & value)
 {
     Q_D(QMngHandler);
     if (option == QImageIOHandler::BackgroundColor)
-        d->setBackgroundColor(qVariantValue<QColor>(value));
+        d->setBackgroundColor(qvariant_cast<QColor>(value));
 }
 
 /*! \reimp */
diff --git a/src/gui/inputmethod/qcoefepinputcontext_s60.cpp b/src/gui/inputmethod/qcoefepinputcontext_s60.cpp
index 394d374..c4d60a5 100644
--- a/src/gui/inputmethod/qcoefepinputcontext_s60.cpp
+++ b/src/gui/inputmethod/qcoefepinputcontext_s60.cpp
@@ -364,10 +364,10 @@ void QCoeFepInputContext::applyHints(Qt::InputMethodHints hints)
 
     commitTemporaryPreeditString();
 
-    bool numbersOnly = hints & ImhDigitsOnly || hints & ImhFormattedNumbersOnly
-            || hints & ImhDialableCharactersOnly;
-    bool noOnlys = !(numbersOnly || hints & ImhUppercaseOnly
-            || hints & ImhLowercaseOnly);
+    const bool anynumbermodes = hints & (ImhDigitsOnly | ImhFormattedNumbersOnly | ImhDialableCharactersOnly);
+    const bool anytextmodes = hints & (ImhUppercaseOnly | ImhLowercaseOnly | ImhEmailCharactersOnly | ImhUrlCharactersOnly);
+    const bool numbersOnly = anynumbermodes && !anytextmodes;
+    const bool noOnlys = !(hints & ImhExclusiveInputMask);
     TInt flags;
     Qt::InputMethodHints oldHints = hints;
 
@@ -379,8 +379,7 @@ void QCoeFepInputContext::applyHints(Qt::InputMethodHints hints)
     }
     if (!noOnlys) {
         // Make sure that the preference is within the permitted set.
-        if (hints & ImhPreferNumbers && !(hints & ImhDigitsOnly || hints & ImhFormattedNumbersOnly
-                || hints & ImhDialableCharactersOnly)) {
+        if (hints & ImhPreferNumbers && !anynumbermodes) {
             hints &= ~ImhPreferNumbers;
         } else if (hints & ImhPreferUppercase && !(hints & ImhUppercaseOnly)) {
             hints &= ~ImhPreferUppercase;
@@ -393,8 +392,7 @@ void QCoeFepInputContext::applyHints(Qt::InputMethodHints hints)
                 hints |= ImhPreferLowercase;
             } else if (hints & ImhUppercaseOnly) {
                 hints |= ImhPreferUppercase;
-            } else if (hints & ImhDigitsOnly || hints & ImhFormattedNumbersOnly
-                    || hints & ImhDialableCharactersOnly) {
+            } else if (numbersOnly) {
                 hints |= ImhPreferNumbers;
             }
         }
@@ -408,13 +406,21 @@ void QCoeFepInputContext::applyHints(Qt::InputMethodHints hints)
         m_fepState->SetCurrentInputMode(EAknEditorTextInputMode);
     }
     flags = 0;
-    if (numbersOnly) {
+    if (noOnlys || (anynumbermodes && anytextmodes)) {
+        flags = EAknEditorAllInputModes;
+    }
+    else if (anynumbermodes) {
         flags |= EAknEditorNumericInputMode;
+        if (QSysInfo::s60Version() > QSysInfo::SV_S60_5_0
+            && ((hints & ImhFormattedNumbersOnly) || (hints & ImhDialableCharactersOnly))) {
+            //workaround - the * key does not launch the symbols menu, making it impossible to use these modes unless text mode is enabled.
+            flags |= EAknEditorTextInputMode;
+        }
     }
-    if (hints & ImhUppercaseOnly || hints & ImhLowercaseOnly) {
+    else if (anytextmodes) {
         flags |= EAknEditorTextInputMode;
     }
-    if (flags == 0) {
+    else {
         flags = EAknEditorAllInputModes;
     }
     m_fepState->SetPermittedInputModes(flags);
@@ -461,24 +467,33 @@ void QCoeFepInputContext::applyHints(Qt::InputMethodHints hints)
     if (hints & ImhNoPredictiveText || hints & ImhHiddenText) {
         flags |= EAknEditorFlagNoT9;
     }
+    // if alphanumeric input, or if multiple incompatible number modes are selected;
+    // then make all symbols available in numeric mode too.
+    if (!numbersOnly || ((hints & ImhFormattedNumbersOnly) && (hints & ImhDialableCharactersOnly)))
+        flags |= EAknEditorFlagUseSCTNumericCharmap;
     m_fepState->SetFlags(flags);
     ReportAknEdStateEvent(MAknEdStateObserver::EAknEdwinStateFlagsUpdate);
 
-    if (hints & ImhFormattedNumbersOnly) {
+    if (hints & ImhDialableCharactersOnly) {
+        // This is first, because if (ImhDialableCharactersOnly | ImhFormattedNumbersOnly)
+        // is specified, this one is more natural (# key enters a #)
+        flags = EAknEditorStandardNumberModeKeymap;
+    } else if (hints & ImhFormattedNumbersOnly) {
+        // # key enters decimal point
         flags = EAknEditorCalculatorNumberModeKeymap;
     } else if (hints & ImhDigitsOnly) {
+        // This is last, because it is most restrictive (# key is inactive)
         flags = EAknEditorPlainNumberModeKeymap;
     } else {
-        // ImhDialableCharactersOnly is the fallback as well, so we don't need to check for
-        // that flag.
         flags = EAknEditorStandardNumberModeKeymap;
     }
     m_fepState->SetNumericKeymap(static_cast<TAknEditorNumericKeymap>(flags));
 
-    if (hints & ImhEmailCharactersOnly) {
-        m_fepState->SetSpecialCharacterTableResourceId(R_AVKON_EMAIL_ADDR_SPECIAL_CHARACTER_TABLE_DIALOG);
-    } else if (hints & ImhUrlCharactersOnly) {
+    if (hints & ImhUrlCharactersOnly) {
+        // URL characters is everything except space, so a superset of the other restrictions
         m_fepState->SetSpecialCharacterTableResourceId(R_AVKON_URL_SPECIAL_CHARACTER_TABLE_DIALOG);
+    } else if (hints & ImhEmailCharactersOnly) {
+        m_fepState->SetSpecialCharacterTableResourceId(R_AVKON_EMAIL_ADDR_SPECIAL_CHARACTER_TABLE_DIALOG);
     } else {
         m_fepState->SetSpecialCharacterTableResourceId(R_AVKON_SPECIAL_CHARACTER_TABLE_DIALOG);
     }
diff --git a/src/gui/inputmethod/qinputcontextfactory.cpp b/src/gui/inputmethod/qinputcontextfactory.cpp
index ec8d8e2..865c1b2 100644
--- a/src/gui/inputmethod/qinputcontextfactory.cpp
+++ b/src/gui/inputmethod/qinputcontextfactory.cpp
@@ -73,7 +73,7 @@
 #endif
 #ifdef Q_WS_S60
 #include "qcoefepinputcontext_p.h"
-#include "akninputlanguageinfo.h"
+#include "AknInputLanguageInfo.h"
 #endif
 
 #include "private/qfactoryloader_p.h"
diff --git a/src/gui/itemviews/qabstractitemdelegate.cpp b/src/gui/itemviews/qabstractitemdelegate.cpp
index 0ea6d67..edbeeb8 100644
--- a/src/gui/itemviews/qabstractitemdelegate.cpp
+++ b/src/gui/itemviews/qabstractitemdelegate.cpp
@@ -362,7 +362,7 @@ bool QAbstractItemDelegate::helpEvent(QHelpEvent *event,
     case QEvent::ToolTip: {
         QHelpEvent *he = static_cast<QHelpEvent*>(event);
         QVariant tooltip = index.data(Qt::ToolTipRole);
-        if (qVariantCanConvert<QString>(tooltip)) {
+        if (tooltip.canConvert<QString>()) {
             QToolTip::showText(he->globalPos(), tooltip.toString(), view);
             return true;
         }
@@ -376,7 +376,7 @@ bool QAbstractItemDelegate::helpEvent(QHelpEvent *event,
     case QEvent::WhatsThis: {
         QHelpEvent *he = static_cast<QHelpEvent*>(event);
         QVariant whatsthis = index.data(Qt::WhatsThisRole);
-        if (qVariantCanConvert<QString>(whatsthis)) {
+        if (whatsthis.canConvert<QString>()) {
             QWhatsThis::showText(he->globalPos(), whatsthis.toString(), view);
             return true;
         }
diff --git a/src/gui/itemviews/qheaderview.cpp b/src/gui/itemviews/qheaderview.cpp
index 67854a3..7eb3ddc 100644
--- a/src/gui/itemviews/qheaderview.cpp
+++ b/src/gui/itemviews/qheaderview.cpp
@@ -2105,7 +2105,7 @@ void QHeaderView::paintEvent(QPaintEvent *e)
 
         QVariant variant = d->model->headerData(logical, d->orientation,
                                                 Qt::FontRole);
-        if (variant.isValid() && qVariantCanConvert<QFont>(variant)) {
+        if (variant.isValid() && variant.canConvert<QFont>()) {
             QFont sectionFont = qvariant_cast<QFont>(variant);
             painter.setFont(sectionFont);
         }
@@ -2485,13 +2485,13 @@ void QHeaderView::paintSection(QPainter *painter, const QRect &rect, int logical
         opt.icon = qvariant_cast<QPixmap>(variant);
     QVariant foregroundBrush = d->model->headerData(logicalIndex, d->orientation,
                                                     Qt::ForegroundRole);
-    if (qVariantCanConvert<QBrush>(foregroundBrush))
+    if (foregroundBrush.canConvert<QBrush>())
         opt.palette.setBrush(QPalette::ButtonText, qvariant_cast<QBrush>(foregroundBrush));
 
     QPointF oldBO = painter->brushOrigin();
     QVariant backgroundBrush = d->model->headerData(logicalIndex, d->orientation,
                                                     Qt::BackgroundRole);
-    if (qVariantCanConvert<QBrush>(backgroundBrush)) {
+    if (backgroundBrush.canConvert<QBrush>()) {
         opt.palette.setBrush(QPalette::Button, qvariant_cast<QBrush>(backgroundBrush));
         opt.palette.setBrush(QPalette::Window, qvariant_cast<QBrush>(backgroundBrush));
         painter->setBrushOrigin(opt.rect.topLeft());
@@ -2552,7 +2552,7 @@ QSize QHeaderView::sectionSizeFromContents(int logicalIndex) const
     QVariant var = d->model->headerData(logicalIndex, d->orientation,
                                             Qt::FontRole);
     QFont fnt;
-    if (var.isValid() && qVariantCanConvert<QFont>(var))
+    if (var.isValid() && var.canConvert<QFont>())
         fnt = qvariant_cast<QFont>(var);
     else
         fnt = font();
diff --git a/src/gui/itemviews/qitemdelegate.cpp b/src/gui/itemviews/qitemdelegate.cpp
index 9bbfc23..bd2b401 100644
--- a/src/gui/itemviews/qitemdelegate.cpp
+++ b/src/gui/itemviews/qitemdelegate.cpp
@@ -850,7 +850,7 @@ void QItemDelegate::drawBackground(QPainter *painter,
         painter->fillRect(option.rect, option.palette.brush(cg, QPalette::Highlight));
     } else {
         QVariant value = index.data(Qt::BackgroundRole);
-        if (qVariantCanConvert<QBrush>(value)) {
+        if (value.canConvert<QBrush>()) {
             QPointF oldBO = painter->brushOrigin();
             painter->setBrushOrigin(option.rect.topLeft());
             painter->fillRect(option.rect, qvariant_cast<QBrush>(value));
@@ -1326,7 +1326,7 @@ QStyleOptionViewItem QItemDelegate::setOptions(const QModelIndex &index,
 
     // set foreground brush
     value = index.data(Qt::ForegroundRole);
-    if (qVariantCanConvert<QBrush>(value))
+    if (value.canConvert<QBrush>())
         opt.palette.setBrush(QPalette::Text, qvariant_cast<QBrush>(value));
 
     return opt;
diff --git a/src/gui/itemviews/qsortfilterproxymodel.cpp b/src/gui/itemviews/qsortfilterproxymodel.cpp
index f9b6b94..953a7f1 100644
--- a/src/gui/itemviews/qsortfilterproxymodel.cpp
+++ b/src/gui/itemviews/qsortfilterproxymodel.cpp
@@ -774,7 +774,7 @@ void QSortFilterProxyModelPrivate::source_items_inserted(
     if (model->rowCount(source_parent) == delta_item_count) {
         // Items were inserted where there were none before.
         // If it was new rows make sure to create mappings for columns so that a
-        // valid mapping can be retreived later and vice-versa.
+        // valid mapping can be retrieved later and vice-versa.
 
         QVector<int> &orthogonal_proxy_to_source = (orient == Qt::Horizontal) ? m->source_rows : m->source_columns;
         QVector<int> &orthogonal_source_to_proxy = (orient == Qt::Horizontal) ? m->proxy_rows : m->proxy_columns;
diff --git a/src/gui/itemviews/qstyleditemdelegate.cpp b/src/gui/itemviews/qstyleditemdelegate.cpp
index 880f8ab..115c734 100644
--- a/src/gui/itemviews/qstyleditemdelegate.cpp
+++ b/src/gui/itemviews/qstyleditemdelegate.cpp
@@ -326,7 +326,7 @@ void QStyledItemDelegate::initStyleOption(QStyleOptionViewItem *option,
         option->displayAlignment = Qt::Alignment(value.toInt());
 
     value = index.data(Qt::ForegroundRole);
-    if (qVariantCanConvert<QBrush>(value))
+    if (value.canConvert<QBrush>())
         option->palette.setBrush(QPalette::Text, qvariant_cast<QBrush>(value));
 
     if (QStyleOptionViewItemV4 *v4 = qstyleoption_cast<QStyleOptionViewItemV4 *>(option)) {
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 956e7ca..f7907d6 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -475,7 +475,7 @@ int qt_antialiasing_threshold = -1;
 static int drag_time = 500;
 #ifdef Q_OS_SYMBIAN
 // The screens are a bit too small to for your thumb when using only 4 pixels drag distance.
-static int drag_distance = 8;
+static int drag_distance = 12;
 #else
 static int drag_distance = 4;
 #endif
@@ -2547,6 +2547,13 @@ void QApplication::setActiveWindow(QWidget* act)
         sendSpontaneousEvent(w, &activationChange);
     }
 
+#ifdef QT_MAC_USE_COCOA
+    // In case the user clicked on a child window, we need to
+    // reestablish the stacking order of the window so
+    // it pops in front of other child windows in cocoa:
+    qt_cocoaStackChildWindowOnTopOfOtherChildren(window);
+#endif
+
     for(int i = 0; i < toBeDeactivated.size(); ++i) {
         QWidget *w = toBeDeactivated.at(i);
         sendSpontaneousEvent(w, &windowDeactivate);
diff --git a/src/gui/kernel/qapplication.h b/src/gui/kernel/qapplication.h
index 404059e..a790c69 100644
--- a/src/gui/kernel/qapplication.h
+++ b/src/gui/kernel/qapplication.h
@@ -412,6 +412,9 @@ private:
 #if defined(QT_RX71_MULTITOUCH)
     Q_PRIVATE_SLOT(d_func(), void _q_readRX71MultiTouchEvents())
 #endif
+#if defined(Q_OS_SYMBIAN)
+    Q_PRIVATE_SLOT(d_func(), void _q_aboutToQuit())
+#endif
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qapplication_p.h b/src/gui/kernel/qapplication_p.h
index 3e72a13..9c78370 100644
--- a/src/gui/kernel/qapplication_p.h
+++ b/src/gui/kernel/qapplication_p.h
@@ -559,6 +559,7 @@ public:
     int symbianHandleCommand(const QSymbianEvent *symbianEvent);
     int symbianResourceChange(const QSymbianEvent *symbianEvent);
 
+    void _q_aboutToQuit();
 #endif
 #if defined(Q_WS_WIN) || defined(Q_WS_X11) || defined (Q_WS_QWS) || defined(Q_WS_MAC) || defined(Q_WS_QPA)
     void sendSyntheticEnterLeave(QWidget *widget);
diff --git a/src/gui/kernel/qapplication_s60.cpp b/src/gui/kernel/qapplication_s60.cpp
index 9f8ca95..4ed00f8 100644
--- a/src/gui/kernel/qapplication_s60.cpp
+++ b/src/gui/kernel/qapplication_s60.cpp
@@ -87,6 +87,10 @@
 #include <hal.h>
 #include <hal_data.h>
 
+#ifdef SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+#include <graphics/wstfxconst.h>
+#endif
+
 QT_BEGIN_NAMESPACE
 
 // Goom Events through Window Server
@@ -372,7 +376,7 @@ void QSymbianControl::ConstructL(bool isWindowOwning, bool desktop)
 {
     if (!desktop)
     {
-        if (isWindowOwning or !qwidget->parentWidget())
+        if (isWindowOwning || !qwidget->parentWidget())
             CreateWindowL(S60->windowGroup());
         else
             /**
@@ -395,6 +399,34 @@ void QSymbianControl::ConstructL(bool isWindowOwning, bool desktop)
 
         DrawableWindow()->SetPointerGrab(ETrue);
     }
+
+#ifdef SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+    if (OwnsWindow()) {
+        TTfxWindowPurpose windowPurpose(ETfxPurposeNone);
+        switch (qwidget->windowType()) {
+        case Qt::Dialog:
+            windowPurpose = ETfxPurposeDialogWindow;
+            break;
+        case Qt::Popup:
+            windowPurpose = ETfxPurposePopupWindow;
+            break;
+        case Qt::Tool:
+            windowPurpose = ETfxPurposeToolWindow;
+            break;
+        case Qt::ToolTip:
+            windowPurpose = ETfxPurposeToolTipWindow;
+            break;
+        case Qt::SplashScreen:
+            windowPurpose = ETfxPurposeSplashScreenWindow;
+            break;
+        default:
+            windowPurpose = (isWindowOwning || !qwidget->parentWidget())
+                            ? ETfxPurposeWindow : ETfxPurposeChildWindow;
+            break;
+        }
+        Window().SetPurpose(windowPurpose);
+    }
+#endif
 }
 
 QSymbianControl::~QSymbianControl()
@@ -1035,7 +1067,7 @@ void QSymbianControl::Draw(const TRect& controlRect) const
         if (QApplicationPrivate::runtime_graphics_system) {
             QRuntimeWindowSurface *rtSurface =
                     static_cast<QRuntimeWindowSurface*>(qwidget->windowSurface());
-            s60Surface = static_cast<QS60WindowSurface *>(rtSurface->m_windowSurface);
+            s60Surface = static_cast<QS60WindowSurface *>(rtSurface->m_windowSurface.data());
         } else
 #endif
             s60Surface = static_cast<QS60WindowSurface *>(qwidget->windowSurface());
@@ -1055,7 +1087,8 @@ void QSymbianControl::Draw(const TRect& controlRect) const
             break;
 
         case QWExtra::ZeroFill:
-            if (Window().DisplayMode() == EColor16MA) {
+            if (Window().DisplayMode() == EColor16MA
+                || Window().DisplayMode() == Q_SYMBIAN_ECOLOR16MAP) {
                 gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
                 gc.SetDrawMode(CGraphicsContext::EDrawModeWriteAlpha);
                 gc.SetBrushColor(TRgb::Color16MA(0));
@@ -1328,7 +1361,7 @@ void qt_init(QApplicationPrivate * /* priv */, int)
         // framework destruction.
         TTrapHandler *origTrapHandler = User::TrapHandler();
 
-        // The S60 framework has not been initalized. We need to do it.
+        // The S60 framework has not been initialized. We need to do it.
         TApaApplicationFactory factory(S60->s60ApplicationFactory ?
                 S60->s60ApplicationFactory : newS60Application);
         CApaCommandLine* commandLine = 0;
@@ -1483,6 +1516,10 @@ void qt_init(QApplicationPrivate * /* priv */, int)
     systemFont.setFamily(systemFont.defaultFamily());
     QApplicationPrivate::setSystemFont(systemFont);
 
+#ifdef SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+    QObject::connect(qApp, SIGNAL(aboutToQuit()), qApp, SLOT(_q_aboutToQuit()));
+#endif
+
 /*
  ### Commented out for now as parameter handling not needed in SOS(yet). Code below will break testlib with -o flag
     int argc = priv->argc;
@@ -1506,7 +1543,7 @@ void qt_init(QApplicationPrivate * /* priv */, int)
 */
 
     // Register WId with the metatype system.  This is to enable
-    // QWidgetPrivate::create_sys to used delayed slot invokation in order
+    // QWidgetPrivate::create_sys to used delayed slot invocation in order
     // to destroy WId objects during reparenting.
     qRegisterMetaType<WId>("WId");
 }
@@ -1572,6 +1609,9 @@ bool QApplicationPrivate::modalState()
 
 void QApplicationPrivate::enterModal_sys(QWidget *widget)
 {
+#ifdef SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+    S60->wsSession().SendEffectCommand(ETfxCmdAppModalModeEnter);
+#endif
     if (widget) {
         static_cast<QSymbianControl *>(widget->effectiveWinId())->FadeBehindPopup(ETrue);
         // Modal partial screen dialogs (like queries) capture pointer events.
@@ -1587,6 +1627,9 @@ void QApplicationPrivate::enterModal_sys(QWidget *widget)
 
 void QApplicationPrivate::leaveModal_sys(QWidget *widget)
 {
+#ifdef SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+    S60->wsSession().SendEffectCommand(ETfxCmdAppModalModeExit);
+#endif
     if (widget) {
         static_cast<QSymbianControl *>(widget->effectiveWinId())->FadeBehindPopup(EFalse);
         // ### FixMe: Add specialized behaviour for fullscreen modal dialogs
@@ -1883,6 +1926,9 @@ int QApplicationPrivate::symbianProcessWsEvent(const QSymbianEvent *symbianEvent
                 break;
             QRefCountedWidgetBackingStore &backingStore = window->d_func()->maybeTopData()->backingStore;
             if (visChangedEvent->iFlags & TWsVisibilityChangedEvent::ENotVisible) {
+#ifdef  SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+                S60->wsSession().SendEffectCommand(ETfxCmdDeallocateLayer);
+#endif
                 // Decrement backing store reference count
                 backingStore.deref();
                 // In order to ensure that any resources used by the window surface
@@ -1893,6 +1939,9 @@ int QApplicationPrivate::symbianProcessWsEvent(const QSymbianEvent *symbianEvent
                     // Increment backing store reference count
                     backingStore.ref();
                 } else {
+#ifdef SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+                    S60->wsSession().SendEffectCommand(ETfxCmdRestoreLayer);
+#endif
                     // Create backing store with an initial reference count of 1
                     backingStore.create(window);
                     backingStore.ref();
@@ -1953,13 +2002,6 @@ int QApplicationPrivate::symbianProcessWsEvent(const QSymbianEvent *symbianEvent
             if (switchToSwRendering) {
                 QRuntimeGraphicsSystem *gs =
                    static_cast<QRuntimeGraphicsSystem*>(QApplicationPrivate::graphics_system);
-
-                uint memoryUsage = gs->memoryUsage();
-                uint memoryForFullscreen = ( S60->screenDepth / 8 )
-                                           * S60->screenWidthInPixels
-                                           * S60->screenHeightInPixels;
-
-                S60->memoryLimitForHwRendering = memoryUsage - memoryForFullscreen;
                 gs->setGraphicsSystem(QLatin1String("raster"));
             }
         }
@@ -1975,8 +2017,7 @@ int QApplicationPrivate::symbianProcessWsEvent(const QSymbianEvent *symbianEvent
         if(QApplicationPrivate::runtime_graphics_system) {
             QRuntimeGraphicsSystem *gs =
                    static_cast<QRuntimeGraphicsSystem*>(QApplicationPrivate::graphics_system);
-            gs->setGraphicsSystem(QLatin1String("openvg"), S60->memoryLimitForHwRendering);
-            S60->memoryLimitForHwRendering = 0;
+            gs->setGraphicsSystem(QLatin1String("openvg"));
         }
 #endif
         break;
@@ -2276,6 +2317,14 @@ void QApplication::restoreOverrideCursor()
 
 #endif // QT_NO_CURSOR
 
+void QApplicationPrivate::_q_aboutToQuit()
+{
+#ifdef SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+    // Send the shutdown tfx command
+    S60->wsSession().SendEffectCommand(ETfxCmdAppShutDown);
+#endif
+}
+
 QS60ThreadLocalData::QS60ThreadLocalData()
 {
     CCoeEnv *env = CCoeEnv::Static();
diff --git a/src/gui/kernel/qapplication_win.cpp b/src/gui/kernel/qapplication_win.cpp
index b4a3f50..34bdbbe 100644
--- a/src/gui/kernel/qapplication_win.cpp
+++ b/src/gui/kernel/qapplication_win.cpp
@@ -714,8 +714,10 @@ static void qt_set_windows_updateScrollBar(QWidget *widget)
         if (QWidget *w = static_cast<QWidget *>(o))
             qt_set_windows_updateScrollBar(w);
     }
+#ifndef QT_NO_SCROLLBAR
     if (qobject_cast<QScrollBar*>(widget))
         widget->updateGeometry();
+#endif
 }
 
 
@@ -1506,6 +1508,7 @@ extern "C" LRESULT QT_WIN_CALLBACK QtWndProc(HWND hwnd, UINT message, WPARAM wPa
 
     switch (message) {
 #ifndef Q_WS_WINCE
+#ifndef QT_NO_SESSIONMANAGER
     case WM_QUERYENDSESSION: {
         if (sm_smActive) // bogus message from windows
             RETURN(true);
@@ -1538,6 +1541,7 @@ extern "C" LRESULT QT_WIN_CALLBACK QtWndProc(HWND hwnd, UINT message, WPARAM wPa
 
         RETURN(0);
     }
+#endif
     case WM_DISPLAYCHANGE:
         if (QApplication::type() == QApplication::Tty)
             break;
@@ -2243,6 +2247,7 @@ extern "C" LRESULT QT_WIN_CALLBACK QtWndProc(HWND hwnd, UINT message, WPARAM wPa
             }
             break;
 
+#ifndef QT_NO_CONTEXTMENU
             case WM_CONTEXTMENU:
             {
                 // it's not VK_APPS or Shift+F10, but a click in the NC area
@@ -2271,6 +2276,7 @@ extern "C" LRESULT QT_WIN_CALLBACK QtWndProc(HWND hwnd, UINT message, WPARAM wPa
             }
             break;
 #endif
+#endif
 
         case WM_IME_STARTCOMPOSITION:
         case WM_IME_ENDCOMPOSITION:
diff --git a/src/gui/kernel/qclipboard.cpp b/src/gui/kernel/qclipboard.cpp
index f7c0b6e..8c7c333 100644
--- a/src/gui/kernel/qclipboard.cpp
+++ b/src/gui/kernel/qclipboard.cpp
@@ -631,7 +631,7 @@ QByteArray QMimeDataWrapper::encodedData(const char *format) const
         return data->data(QLatin1String(format));
     } else{
         QVariant variant = data->imageData();
-        QImage img = qVariantValue<QImage>(variant);
+        QImage img = qvariant_cast<QImage>(variant);
         QByteArray ba;
         QBuffer buffer(&ba);
         buffer.open(QIODevice::WriteOnly);
diff --git a/src/gui/kernel/qcocoaapplication_mac.mm b/src/gui/kernel/qcocoaapplication_mac.mm
index 238b96b..9270213 100644
--- a/src/gui/kernel/qcocoaapplication_mac.mm
+++ b/src/gui/kernel/qcocoaapplication_mac.mm
@@ -117,15 +117,19 @@ QT_USE_NAMESPACE
     quint64 lower = [event data1];
     quint64 upper = [event data2];
     QCocoaPostMessageArgs *args = reinterpret_cast<QCocoaPostMessageArgs *>(lower | (upper << 32));
+    // Special case for convenience: if the argument is an NSNumber, we unbox it directly.
+    // Use NSValue instead if this behaviour is unwanted.
+    id a1 = ([args->arg1 isKindOfClass:[NSNumber class]]) ? (id)[args->arg1 intValue] : args->arg1;
+    id a2 = ([args->arg2 isKindOfClass:[NSNumber class]]) ? (id)[args->arg2 intValue] : args->arg2;
     switch (args->argCount) {
     case 0:
         [args->target performSelector:args->selector];
         break;
     case 1:
-        [args->target performSelector:args->selector withObject:args->arg1];
+        [args->target performSelector:args->selector withObject:a1];
         break;
     case 3:
-        [args->target performSelector:args->selector withObject:args->arg1 withObject:args->arg2];
+        [args->target performSelector:args->selector withObject:a1 withObject:a2];
         break;
     }
 
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm
index 3229e71..0282c79 100644
--- a/src/gui/kernel/qcocoaview_mac.mm
+++ b/src/gui/kernel/qcocoaview_mac.mm
@@ -207,6 +207,7 @@ static int qCocoaViewCount = 0;
 
     composing = false;
     sendKeyEvents = true;
+    fromKeyDownEvent = false;
     [self setHidden:YES];
     return self;
 }
@@ -1215,7 +1216,9 @@ static int qCocoaViewCount = 0;
             && !(widgetToGetKey->inputMethodHints() & Qt::ImhDigitsOnly
                  || widgetToGetKey->inputMethodHints() & Qt::ImhFormattedNumbersOnly
                  || widgetToGetKey->inputMethodHints() & Qt::ImhHiddenText)) {
+        fromKeyDownEvent = true;
         [qt_mac_nativeview_for(widgetToGetKey) interpretKeyEvents:[NSArray arrayWithObject: theEvent]];
+        fromKeyDownEvent = false;
     }
     if (sendKeyEvents && !composing) {
         bool keyOK = qt_dispatchKeyEvent(theEvent, widgetToGetKey);
@@ -1285,7 +1288,10 @@ static int qCocoaViewCount = 0;
         };
     }
 
-    if ([aString length] && composing) {
+    // When entering characters through Character Viewer or Keyboard Viewer, the text is passed
+    // through this insertText method. Since we dont receive a keyDown Event in such cases, the
+    // composing flag will be false.
+    if (([aString length] && composing) ||  !fromKeyDownEvent) {
         // Send the commit string to the widget.
         composing = false;
         sendKeyEvents = false;
diff --git a/src/gui/kernel/qcocoaview_mac_p.h b/src/gui/kernel/qcocoaview_mac_p.h
index b6b63ca..511423357 100644
--- a/src/gui/kernel/qcocoaview_mac_p.h
+++ b/src/gui/kernel/qcocoaview_mac_p.h
@@ -86,6 +86,7 @@ Q_GUI_EXPORT
     bool composing;
     int composingLength;
     bool sendKeyEvents;
+    bool fromKeyDownEvent;
     QString *composingText;
     NSInteger dragEnterSequence;
 }
diff --git a/src/gui/kernel/qevent.cpp b/src/gui/kernel/qevent.cpp
index fc2c995..d2b2098 100644
--- a/src/gui/kernel/qevent.cpp
+++ b/src/gui/kernel/qevent.cpp
@@ -4281,6 +4281,11 @@ QTouchEvent::TouchPoint &QTouchEvent::TouchPoint::operator=(const QTouchEvent::T
     QGestureEvent::accept() for each of them, or an event filter consumes the
     event.
 
+    \section1 Further Reading
+
+    For an overview of gesture handling in Qt and information on using gestures
+    in your applications, see the \l{Gestures Programming} document.
+
     \sa QGesture, QGestureRecognizer,
         QWidget::grabGesture(), QGraphicsObject::grabGesture()
 */
diff --git a/src/gui/kernel/qgesture.cpp b/src/gui/kernel/qgesture.cpp
index 4a4452a..13274c4 100644
--- a/src/gui/kernel/qgesture.cpp
+++ b/src/gui/kernel/qgesture.cpp
@@ -59,6 +59,9 @@ QT_BEGIN_NAMESPACE
     the QGestureRecognizer object that is registered with the application; see
     QGestureRecognizer::registerRecognizer().
 
+    For an overview of gesture handling in Qt and information on using gestures
+    in your applications, see the \l{Gestures Programming} document.
+
     \section1 Gesture Properties
 
     The class has a list of properties that can be queried by the user to get
@@ -219,7 +222,10 @@ QGesture::GestureCancelPolicy QGesture::gestureCancelPolicy() const
 
     \image pangesture.png
 
-    \sa {Gestures Programming}, QPinchGesture, QSwipeGesture
+    For an overview of gesture handling in Qt and information on using gestures
+    in your applications, see the \l{Gestures Programming} document.
+
+    \sa QPinchGesture, QSwipeGesture
 */
 
 /*!
@@ -314,6 +320,9 @@ void QPanGesture::setAcceleration(qreal value)
     them closer together or further apart to change the scale factor, zoom, or level
     of detail of the user interface.
 
+    For an overview of gesture handling in Qt and information on using gestures
+    in your applications, see the \l{Gestures Programming} document.
+
     \image pinchgesture.png
 
     Instead of repeatedly applying the same pinching gesture, the user may
@@ -322,7 +331,7 @@ void QPanGesture::setAcceleration(qreal value)
     will continue to be delivered to the target object, containing an instance
     of QPinchGesture in the Qt::GestureUpdated state.
 
-    \sa {Gestures Programming}, QPanGesture, QSwipeGesture
+    \sa QPanGesture, QSwipeGesture
 */
 
 /*!
@@ -572,7 +581,10 @@ void QPinchGesture::setRotationAngle(qreal value)
 
     \image swipegesture.png
 
-    \sa {Gestures Programming}, QPanGesture, QPinchGesture
+    For an overview of gesture handling in Qt and information on using gestures
+    in your applications, see the \l{Gestures Programming} document.
+
+    \sa QPanGesture, QPinchGesture
 */
 
 /*!
@@ -667,7 +679,10 @@ void QSwipeGesture::setSwipeAngle(qreal value)
     \brief The QTapGesture class describes a tap gesture made by the user.
     \ingroup gestures
 
-    \sa {Gestures Programming}, QPanGesture, QPinchGesture
+    For an overview of gesture handling in Qt and information on using gestures
+    in your applications, see the \l{Gestures Programming} document.
+
+    \sa QPanGesture, QPinchGesture
 */
 
 /*!
@@ -700,7 +715,10 @@ void QTapGesture::setPosition(const QPointF &value)
     gesture made by the user.
     \ingroup gestures
 
-    \sa {Gestures Programming}, QPanGesture, QPinchGesture
+    For an overview of gesture handling in Qt and information on using gestures
+    in your applications, see the \l{Gestures Programming} document.
+
+    \sa QPanGesture, QPinchGesture
 */
 
 /*!
diff --git a/src/gui/kernel/qgesturerecognizer.cpp b/src/gui/kernel/qgesturerecognizer.cpp
index 3e23bbf..e0e7784 100644
--- a/src/gui/kernel/qgesturerecognizer.cpp
+++ b/src/gui/kernel/qgesturerecognizer.cpp
@@ -62,6 +62,9 @@ QT_BEGIN_NAMESPACE
    need to use this class directly. Instances will be created behind the scenes by the
    framework.
 
+   For an overview of gesture handling in Qt and information on using gestures
+   in your applications, see the \l{Gestures Programming} document.
+
    \section1 Recognizing Gestures
 
    The process of recognizing gestures involves filtering input events sent to specific
diff --git a/src/gui/kernel/qpalette.cpp b/src/gui/kernel/qpalette.cpp
index 38ec806..55d5727 100644
--- a/src/gui/kernel/qpalette.cpp
+++ b/src/gui/kernel/qpalette.cpp
@@ -872,7 +872,7 @@ void QPalette::detach()
     \note The current ColorGroup is not taken into account when
     comparing palettes
 
-    \sa operator==
+    \sa operator==()
 */
 
 /*!
@@ -882,7 +882,7 @@ void QPalette::detach()
     \note The current ColorGroup is not taken into account when
     comparing palettes
 
-    \sa operator!=
+    \sa operator!=()
 */
 bool QPalette::operator==(const QPalette &p) const
 {
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac.mm b/src/gui/kernel/qt_cocoa_helpers_mac.mm
index 2eee434..88ff1e6 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac.mm
+++ b/src/gui/kernel/qt_cocoa_helpers_mac.mm
@@ -722,9 +722,11 @@ bool qt_dispatchKeyEvent(void * /*NSEvent * */ keyEvent, QWidget *widgetToGetEve
     unsigned int info = 0;
     if ([event type] == NSKeyDown) {
         NSString *characters = [event characters];
-        unichar value = [characters characterAtIndex:0];
-        qt_keymapper_private()->updateKeyMap(0, key_event, (void *)&value);
-        info = value;
+        if ([characters length]) {
+            unichar value = [characters characterAtIndex:0];
+            qt_keymapper_private()->updateKeyMap(0, key_event, (void *)&value);
+            info = value;
+        }
     }
 
     // Redirect keys to alien widgets.
@@ -1542,6 +1544,22 @@ void macSyncDrawingOnFirstInvocation(void * /*OSWindowRef */window)
         [theWindow display];
     }
 }
+
+void qt_cocoaStackChildWindowOnTopOfOtherChildren(QWidget *childWidget)
+{
+    if (!childWidget)
+        return;
+
+    QWidget *parent = childWidget->parentWidget();
+    if (childWidget->isWindow() && parent) {
+        if ([[qt_mac_window_for(parent) childWindows] containsObject:qt_mac_window_for(childWidget)]) {
+            QWidgetPrivate *d = qt_widget_private(childWidget);
+            d->setSubWindowStacking(false);
+            d->setSubWindowStacking(true);
+        }
+    }
+}
+
 #endif // QT_MAC_USE_COCOA
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac_p.h b/src/gui/kernel/qt_cocoa_helpers_mac_p.h
index 57d2c90..5c23392 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac_p.h
+++ b/src/gui/kernel/qt_cocoa_helpers_mac_p.h
@@ -148,6 +148,7 @@ void qt_cocoaChangeOverrideCursor(const QCursor &cursor);
 // These methods exists only for supporting unified mode.
 void macDrawRectOnTop(void * /*OSWindowRef */ window);
 void macSyncDrawingOnFirstInvocation(void * /*OSWindowRef */window);
+void qt_cocoaStackChildWindowOnTopOfOtherChildren(QWidget *widget);
 #endif
 void qt_mac_menu_collapseSeparators(void * /*NSMenu */ menu, bool collapse);
 bool qt_dispatchKeyEvent(void * /*NSEvent * */ keyEvent, QWidget *widgetToGetEvent);
diff --git a/src/gui/kernel/qt_s60_p.h b/src/gui/kernel/qt_s60_p.h
index 7f0c99e..a18ea07 100644
--- a/src/gui/kernel/qt_s60_p.h
+++ b/src/gui/kernel/qt_s60_p.h
@@ -141,7 +141,6 @@ public:
     int supportsPremultipliedAlpha : 1;
     int avkonComponentsSupportTransparency : 1;
     int menuBeingConstructed : 1;
-    int memoryLimitForHwRendering;
     QApplication::QS60MainApplicationFactory s60ApplicationFactory; // typedef'ed pointer type
 
     enum ScanCodeState {
@@ -291,7 +290,6 @@ inline QS60Data::QS60Data()
   supportsPremultipliedAlpha(0),
   avkonComponentsSupportTransparency(0),
   menuBeingConstructed(0),
-  memoryLimitForHwRendering(0),
   s60ApplicationFactory(0)
 #ifdef Q_OS_SYMBIAN
   ,s60InstalledTrapHandler(0)
diff --git a/src/gui/kernel/qtooltip.cpp b/src/gui/kernel/qtooltip.cpp
index c8fcf45..88fdbc6 100644
--- a/src/gui/kernel/qtooltip.cpp
+++ b/src/gui/kernel/qtooltip.cpp
@@ -353,7 +353,7 @@ void QTipLabel::placeTip(const QPoint &pos, QWidget *w)
 #ifndef QT_NO_STYLE_STYLESHEET
     if (testAttribute(Qt::WA_StyleSheet) || (w && qobject_cast<QStyleSheetStyle *>(w->style()))) {
         //the stylesheet need to know the real parent
-        QTipLabel::instance->setProperty("_q_stylesheet_parent", qVariantFromValue(w));
+        QTipLabel::instance->setProperty("_q_stylesheet_parent", QVariant::fromValue(w));
         //we force the style to be the QStyleSheetStyle, and force to clear the cache as well.
         QTipLabel::instance->setStyleSheet(QLatin1String("/* */"));
 
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index 16e75c3..7092e19 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -6552,7 +6552,7 @@ void QWidget::setTabOrder(QWidget* first, QWidget *second)
         // that can take keyboard focus so that second is inserted after
         // that last child, and the focus order within first is (more
         // likely to be) preserved.
-        QList<QWidget *> l = qFindChildren<QWidget *>(first);
+        QList<QWidget *> l = first->findChildren<QWidget *>();
         for (int i = l.size()-1; i >= 0; --i) {
             QWidget * next = l.at(i);
             if (next->window() == fp->window()) {
diff --git a/src/gui/kernel/qwidget.h b/src/gui/kernel/qwidget.h
index c750465..5b579b9 100644
--- a/src/gui/kernel/qwidget.h
+++ b/src/gui/kernel/qwidget.h
@@ -913,13 +913,6 @@ protected:
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(QWidget::RenderFlags)
 
-#if defined Q_CC_MSVC && _MSC_VER < 1300
-template <> inline QWidget *qobject_cast_helper<QWidget*>(QObject *o, QWidget *)
-{
-    if (!o || !o->isWidgetType()) return 0;
-    return (QWidget*)(o);
-}
-#else
 template <> inline QWidget *qobject_cast<QWidget*>(QObject *o)
 {
     if (!o || !o->isWidgetType()) return 0;
@@ -930,7 +923,6 @@ template <> inline const QWidget *qobject_cast<const QWidget*>(const QObject *o)
     if (!o || !o->isWidgetType()) return 0;
     return static_cast<const QWidget*>(o);
 }
-#endif
 
 inline QWidget *QWidget::childAt(int ax, int ay) const
 { return childAt(QPoint(ax, ay)); }
diff --git a/src/gui/kernel/qwidget_win.cpp b/src/gui/kernel/qwidget_win.cpp
index 91521a8..05d9a5f 100644
--- a/src/gui/kernel/qwidget_win.cpp
+++ b/src/gui/kernel/qwidget_win.cpp
@@ -166,7 +166,7 @@ static void qt_tablet_init()
     qt_tablet_widget = new QWidget(0);
     qt_tablet_widget->createWinId();
     qt_tablet_widget->setObjectName(QLatin1String("Qt internal tablet widget"));
-    // We dont need this internal widget to appear in QApplication::topLevelWidgets()
+    // We don't need this internal widget to appear in QApplication::topLevelWidgets()
     if (QWidgetPrivate::allWidgets)
         QWidgetPrivate::allWidgets->remove(qt_tablet_widget);
     LOGCONTEXT lcMine;
@@ -1547,7 +1547,7 @@ bool QWidgetPrivate::shouldShowMaximizeButton()
 {
     if (data.window_flags & Qt::MSWindowsFixedSizeDialogHint)
         return false;
-    // if the user explicitely asked for the maximize button, we try to add
+    // if the user explicitly asked for the maximize button, we try to add
     // it even if the window has fixed size.
     if (data.window_flags & Qt::CustomizeWindowHint &&
         data.window_flags & Qt::WindowMaximizeButtonHint)
diff --git a/src/gui/math3d/qmatrix4x4.cpp b/src/gui/math3d/qmatrix4x4.cpp
index 16c7f97..2f03bd0 100644
--- a/src/gui/math3d/qmatrix4x4.cpp
+++ b/src/gui/math3d/qmatrix4x4.cpp
@@ -102,8 +102,6 @@ QMatrix4x4::QMatrix4x4(const qreal *values)
     \sa optimize()
 */
 
-#if !defined(QT_NO_MEMBER_TEMPLATES) || defined(Q_QDOC)
-
 /*!
     \fn QMatrix4x4::QMatrix4x4(const QGenericMatrix<N, M, qreal>& matrix)
 
@@ -112,7 +110,7 @@ QMatrix4x4::QMatrix4x4(const qreal *values)
     the remaining elements are filled with elements from the identity
     matrix.
 
-    \sa toGenericMatrix(), qGenericMatrixToMatrix4x4()
+    \sa toGenericMatrix()
 */
 
 /*!
@@ -122,34 +120,32 @@ QMatrix4x4::QMatrix4x4(const qreal *values)
     top-most M rows of this 4x4 matrix.  If N or M is greater than 4,
     then the remaining elements are filled with elements from the
     identity matrix.
-
-    \sa qGenericMatrixFromMatrix4x4()
 */
 
-#endif
-
 /*!
     \fn QMatrix4x4 qGenericMatrixToMatrix4x4(const QGenericMatrix<N, M, qreal>& matrix)
     \relates QMatrix4x4
+    \obsolete
 
     Returns a 4x4 matrix constructed from the left-most 4 columns and
     top-most 4 rows of \a matrix.  If \a matrix has less than 4 columns
     or rows, the remaining elements are filled with elements from the
     identity matrix.
 
-    \sa qGenericMatrixFromMatrix4x4()
+    \sa QMatrix4x4(const QGenericMatrix &)
 */
 
 /*!
     \fn QGenericMatrix<N, M, qreal> qGenericMatrixFromMatrix4x4(const QMatrix4x4& matrix)
     \relates QMatrix4x4
+    \obsolete
 
     Returns a NxM generic matrix constructed from the left-most N columns
     and top-most M rows of \a matrix.  If N or M is greater than 4,
     then the remaining elements are filled with elements from the
     identity matrix.
 
-    \sa qGenericMatrixToMatrix4x4(), QMatrix4x4::toGenericMatrix()
+    \sa QMatrix4x4::toGenericMatrix()
 */
 
 /*!
diff --git a/src/gui/math3d/qmatrix4x4.h b/src/gui/math3d/qmatrix4x4.h
index 0671fa8..598058c 100644
--- a/src/gui/math3d/qmatrix4x4.h
+++ b/src/gui/math3d/qmatrix4x4.h
@@ -69,10 +69,10 @@ public:
                       qreal m21, qreal m22, qreal m23, qreal m24,
                       qreal m31, qreal m32, qreal m33, qreal m34,
                       qreal m41, qreal m42, qreal m43, qreal m44);
-#if !defined(QT_NO_MEMBER_TEMPLATES) || defined(Q_QDOC)
+
     template <int N, int M>
     explicit QMatrix4x4(const QGenericMatrix<N, M, qreal>& matrix);
-#endif
+
     QMatrix4x4(const qreal *values, int cols, int rows);
     QMatrix4x4(const QTransform& transform);
     QMatrix4x4(const QMatrix& matrix);
@@ -169,10 +169,8 @@ public:
     QRect mapRect(const QRect& rect) const;
     QRectF mapRect(const QRectF& rect) const;
 
-#if !defined(QT_NO_MEMBER_TEMPLATES) || defined(Q_QDOC)
     template <int N, int M>
     QGenericMatrix<N, M, qreal> toGenericMatrix() const;
-#endif
 
     inline qreal *data();
     inline const qreal *data() const { return m[0]; }
@@ -223,8 +221,6 @@ inline QMatrix4x4::QMatrix4x4
     flagBits = General;
 }
 
-#if !defined(QT_NO_MEMBER_TEMPLATES)
-
 template <int N, int M>
 Q_INLINE_TEMPLATE QMatrix4x4::QMatrix4x4
     (const QGenericMatrix<N, M, qreal>& matrix)
@@ -261,8 +257,6 @@ QGenericMatrix<N, M, qreal> QMatrix4x4::toGenericMatrix() const
     return result;
 }
 
-#endif
-
 inline const qreal& QMatrix4x4::operator()(int aRow, int aColumn) const
 {
     Q_ASSERT(aRow >= 0 && aRow < 4 && aColumn >= 0 && aColumn < 4);
@@ -992,14 +986,15 @@ Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QMatrix4x4 &);
 Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QMatrix4x4 &);
 #endif
 
+#ifdef QT_DEPRECATED
 template <int N, int M>
-QMatrix4x4 qGenericMatrixToMatrix4x4(const QGenericMatrix<N, M, qreal>& matrix)
+QT_DEPRECATED QMatrix4x4 qGenericMatrixToMatrix4x4(const QGenericMatrix<N, M, qreal>& matrix)
 {
     return QMatrix4x4(matrix.constData(), N, M);
 }
 
 template <int N, int M>
-QGenericMatrix<N, M, qreal> qGenericMatrixFromMatrix4x4(const QMatrix4x4& matrix)
+QT_DEPRECATED QGenericMatrix<N, M, qreal> qGenericMatrixFromMatrix4x4(const QMatrix4x4& matrix)
 {
     QGenericMatrix<N, M, qreal> result;
     const qreal *m = matrix.constData();
@@ -1016,6 +1011,7 @@ QGenericMatrix<N, M, qreal> qGenericMatrixFromMatrix4x4(const QMatrix4x4& matrix
     }
     return result;
 }
+#endif
 
 #endif
 
diff --git a/src/gui/painting/painting.pri b/src/gui/painting/painting.pri
index 92c4e84..ef66c6c 100644
--- a/src/gui/painting/painting.pri
+++ b/src/gui/painting/painting.pri
@@ -259,23 +259,8 @@ symbian {
         QMAKE_CXXFLAGS.ARMCC *= -O3
 }
 
-neon:*-g++* {
-    DEFINES += QT_HAVE_NEON
-    HEADERS += painting/qdrawhelper_neon_p.h
-    SOURCES += painting/qdrawhelper_neon.cpp
-    QMAKE_CXXFLAGS *= -mfpu=neon
-
-    DRAWHELPER_NEON_ASM_FILES = ../3rdparty/pixman/pixman-arm-neon-asm.S painting/qdrawhelper_neon_asm.S
-
-    neon_compiler.commands = $$QMAKE_CXX -c
-    neon_compiler.commands += $(CXXFLAGS) $(INCPATH) ${QMAKE_FILE_IN} -o ${QMAKE_FILE_OUT}
-    neon_compiler.dependency_type = TYPE_C
-    neon_compiler.output = ${QMAKE_VAR_OBJECTS_DIR}${QMAKE_FILE_BASE}$${first(QMAKE_EXT_OBJ)}
-    neon_compiler.input = DRAWHELPER_NEON_ASM_FILES
-    neon_compiler.variable_out = OBJECTS
-    neon_compiler.name = compiling[neon] ${QMAKE_FILE_IN}
-    silent:neon_compiler.commands = @echo compiling[neon] ${QMAKE_FILE_IN} && $$neon_compiler.commands
-    QMAKE_EXTRA_COMPILERS += neon_compiler
-}
+NEON_SOURCES += painting/qdrawhelper_neon.cpp
+NEON_HEADERS += painting/qdrawhelper_neon_p.h
+NEON_ASM += ../3rdparty/pixman/pixman-arm-neon-asm.S painting/qdrawhelper_neon_asm.S
 
 include($$PWD/../../3rdparty/zlib_dependency.pri)
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index f5641a4..054f96f 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -856,7 +856,7 @@ const uint * QT_FASTCALL fetchTransformedBilinear(uint *buffer, const Operator *
                 while (b < end) {
                     int x1 = (fx >> 16);
                     int x2;
-                    fetchTransformedBilinear_pixelBounds<blendType>(image_height, image_x1, image_x2, x1, x2);
+                    fetchTransformedBilinear_pixelBounds<blendType>(image_width, image_x1, image_x2, x1, x2);
                     uint tl = fetch(s1, x1, data->texture.colorTable);
                     uint tr = fetch(s1, x2, data->texture.colorTable);
                     uint bl = fetch(s2, x1, data->texture.colorTable);
@@ -883,7 +883,7 @@ const uint * QT_FASTCALL fetchTransformedBilinear(uint *buffer, const Operator *
                 while (b < end) {
                     int x1 = (fx >> 16);
                     int x2;
-                    fetchTransformedBilinear_pixelBounds<blendType>(image_height, image_x1, image_x2, x1, x2);
+                    fetchTransformedBilinear_pixelBounds<blendType>(image_width, image_x1, image_x2, x1, x2);
                     uint tl = fetch(s1, x1, data->texture.colorTable);
                     uint tr = fetch(s1, x2, data->texture.colorTable);
                     uint bl = fetch(s2, x1, data->texture.colorTable);
@@ -7938,8 +7938,10 @@ void qInitDrawhelperAsm()
                                                   uint const_alpha);
             extern void QT_FASTCALL comp_func_solid_SourceOver_sse2(uint *destPixels, int length, uint color, uint const_alpha);
             extern void QT_FASTCALL comp_func_Plus_sse2(uint *dst, const uint *src, int length, uint const_alpha);
+            extern void QT_FASTCALL comp_func_Source_sse2(uint *dst, const uint *src, int length, uint const_alpha);
 
             functionForModeAsm[0] = comp_func_SourceOver_sse2;
+            functionForModeAsm[QPainter::CompositionMode_Source] = comp_func_Source_sse2;
             functionForModeAsm[QPainter::CompositionMode_Plus] = comp_func_Plus_sse2;
             functionForModeSolidAsm[0] = comp_func_solid_SourceOver_sse2;
 
diff --git a/src/gui/painting/qdrawhelper_p.h b/src/gui/painting/qdrawhelper_p.h
index 1a87127..d04c70d 100644
--- a/src/gui/painting/qdrawhelper_p.h
+++ b/src/gui/painting/qdrawhelper_p.h
@@ -314,18 +314,61 @@ struct QSpanData
     void adjustSpanMethods();
 };
 
+#if defined(Q_CC_RVCT)
+#  pragma push
+#  pragma arm
+#endif
+Q_STATIC_INLINE_FUNCTION uint INTERPOLATE_PIXEL_255(uint x, uint a, uint y, uint b) {
+    uint t = (x & 0xff00ff) * a + (y & 0xff00ff) * b;
+    t = (t + ((t >> 8) & 0xff00ff) + 0x800080) >> 8;
+    t &= 0xff00ff;
 
-Q_STATIC_INLINE_FUNCTION uint BYTE_MUL_RGB16(uint x, uint a) {
-    a += 1;
-    uint t = (((x & 0x07e0)*a) >> 8) & 0x07e0;
-    t |= (((x & 0xf81f)*(a>>2)) >> 6) & 0xf81f;
-    return t;
+    x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b;
+    x = (x + ((x >> 8) & 0xff00ff) + 0x800080);
+    x &= 0xff00ff00;
+    x |= t;
+    return x;
 }
+#if defined(Q_CC_RVCT)
+#  pragma pop
+#endif
 
-Q_STATIC_INLINE_FUNCTION uint BYTE_MUL_RGB16_32(uint x, uint a) {
-    uint t = (((x & 0xf81f07e0) >> 5)*a) & 0xf81f07e0;
-    t |= (((x & 0x07e0f81f)*a) >> 5) & 0x07e0f81f;
-    return t;
+#if QT_POINTER_SIZE == 8 // 64-bit versions
+
+Q_STATIC_INLINE_FUNCTION uint INTERPOLATE_PIXEL_256(uint x, uint a, uint y, uint b) {
+    quint64 t = (((quint64(x)) | ((quint64(x)) << 24)) & 0x00ff00ff00ff00ff) * a;
+    t += (((quint64(y)) | ((quint64(y)) << 24)) & 0x00ff00ff00ff00ff) * b;
+    t >>= 8;
+    t &= 0x00ff00ff00ff00ff;
+    return (uint(t)) | (uint(t >> 24));
+}
+
+Q_STATIC_INLINE_FUNCTION uint BYTE_MUL(uint x, uint a) {
+    quint64 t = (((quint64(x)) | ((quint64(x)) << 24)) & 0x00ff00ff00ff00ff) * a;
+    t = (t + ((t >> 8) & 0xff00ff00ff00ff) + 0x80008000800080) >> 8;
+    t &= 0x00ff00ff00ff00ff;
+    return (uint(t)) | (uint(t >> 24));
+}
+
+Q_STATIC_INLINE_FUNCTION uint PREMUL(uint x) {
+    uint a = x >> 24;
+    quint64 t = (((quint64(x)) | ((quint64(x)) << 24)) & 0x00ff00ff00ff00ff) * a;
+    t = (t + ((t >> 8) & 0xff00ff00ff00ff) + 0x80008000800080) >> 8;
+    t &= 0x000000ff00ff00ff;
+    return (uint(t)) | (uint(t >> 24)) | (a << 24);
+}
+
+#else // 32-bit versions
+
+Q_STATIC_INLINE_FUNCTION uint INTERPOLATE_PIXEL_256(uint x, uint a, uint y, uint b) {
+    uint t = (x & 0xff00ff) * a + (y & 0xff00ff) * b;
+    t >>= 8;
+    t &= 0xff00ff;
+
+    x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b;
+    x &= 0xff00ff00;
+    x |= t;
+    return x;
 }
 
 #if defined(Q_CC_RVCT)
@@ -359,6 +402,21 @@ Q_STATIC_INLINE_FUNCTION uint PREMUL(uint x) {
     x |= t | (a << 24);
     return x;
 }
+#endif
+
+
+Q_STATIC_INLINE_FUNCTION uint BYTE_MUL_RGB16(uint x, uint a) {
+    a += 1;
+    uint t = (((x & 0x07e0)*a) >> 8) & 0x07e0;
+    t |= (((x & 0xf81f)*(a>>2)) >> 6) & 0xf81f;
+    return t;
+}
+
+Q_STATIC_INLINE_FUNCTION uint BYTE_MUL_RGB16_32(uint x, uint a) {
+    uint t = (((x & 0xf81f07e0) >> 5)*a) & 0xf81f07e0;
+    t |= (((x & 0x07e0f81f)*a) >> 5) & 0x07e0f81f;
+    return t;
+}
 
 #define INV_PREMUL(p)                                   \
     (qAlpha(p) == 0 ? 0 :                               \
@@ -1847,70 +1905,6 @@ inline int qBlue565(quint16 rgb) {
     return (b << 3) | (b >> 2);
 }
 
-#if 1
-Q_STATIC_INLINE_FUNCTION uint INTERPOLATE_PIXEL_256(uint x, uint a, uint y, uint b) {
-    uint t = (x & 0xff00ff) * a + (y & 0xff00ff) * b;
-    t >>= 8;
-    t &= 0xff00ff;
-
-    x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b;
-    x &= 0xff00ff00;
-    x |= t;
-    return x;
-}
-
-#if defined(Q_CC_RVCT)
-#  pragma push
-#  pragma arm
-#endif
-Q_STATIC_INLINE_FUNCTION uint INTERPOLATE_PIXEL_255(uint x, uint a, uint y, uint b) {
-    uint t = (x & 0xff00ff) * a + (y & 0xff00ff) * b;
-    t = (t + ((t >> 8) & 0xff00ff) + 0x800080) >> 8;
-    t &= 0xff00ff;
-
-    x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b;
-    x = (x + ((x >> 8) & 0xff00ff) + 0x800080);
-    x &= 0xff00ff00;
-    x |= t;
-    return x;
-}
-#if defined(Q_CC_RVCT)
-#  pragma pop
-#endif
-#else
-// possible implementation for 64 bit
-Q_STATIC_INLINE_FUNCTION uint INTERPOLATE_PIXEL_256(uint x, uint a, uint y, uint b) {
-    ulong t = (((ulong(x)) | ((ulong(x)) << 24)) & 0x00ff00ff00ff00ff) * a;
-    t += (((ulong(y)) | ((ulong(y)) << 24)) & 0x00ff00ff00ff00ff) * b;
-    t >>= 8;
-    t &= 0x00ff00ff00ff00ff;
-    return (uint(t)) | (uint(t >> 24));
-}
-
-Q_STATIC_INLINE_FUNCTION uint INTERPOLATE_PIXEL_255(uint x, uint a, uint y, uint b) {
-    ulong t = (((ulong(x)) | ((ulong(x)) << 24)) & 0x00ff00ff00ff00ff) * a;
-    t += (((ulong(y)) | ((ulong(y)) << 24)) & 0x00ff00ff00ff00ff) * b;
-    t = (t + ((t >> 8) & 0xff00ff00ff00ff) + 0x80008000800080);
-    t &= 0x00ff00ff00ff00ff;
-    return (uint(t)) | (uint(t >> 24));
-}
-
-Q_STATIC_INLINE_FUNCTION uint BYTE_MUL(uint x, uint a) {
-    ulong t = (((ulong(x)) | ((ulong(x)) << 24)) & 0x00ff00ff00ff00ff) * a;
-    t = (t + ((t >> 8) & 0xff00ff00ff00ff) + 0x80008000800080);
-    t &= 0x00ff00ff00ff00ff;
-    return (uint(t)) | (uint(t >> 24));
-}
-
-Q_STATIC_INLINE_FUNCTION uint PREMUL(uint x) {
-    uint a = x >> 24;
-    ulong t = (((ulong(x)) | ((ulong(x)) << 24)) & 0x00ff00ff00ff00ff) * a;
-    t = (t + ((t >> 8) & 0xff00ff00ff00ff) + 0x80008000800080);
-    t &= 0x00ff00ff00ff00ff;
-    return (uint(t)) | (uint(t >> 24)) | 0xff000000;
-}
-#endif
-
 const uint qt_bayer_matrix[16][16] = {
     { 0x1, 0xc0, 0x30, 0xf0, 0xc, 0xcc, 0x3c, 0xfc,
       0x3, 0xc3, 0x33, 0xf3, 0xf, 0xcf, 0x3f, 0xff},
diff --git a/src/gui/painting/qdrawhelper_sse2.cpp b/src/gui/painting/qdrawhelper_sse2.cpp
index e090ae5..22c0384 100644
--- a/src/gui/painting/qdrawhelper_sse2.cpp
+++ b/src/gui/painting/qdrawhelper_sse2.cpp
@@ -112,9 +112,7 @@ void qt_blend_rgb32_on_rgb32_sse2(uchar *destPixels, int dbpl,
                 int x = 0;
 
                 // First, align dest to 16 bytes:
-                const int offsetToAlignOn16Bytes = (4 - ((reinterpret_cast<quintptr>(dst) >> 2) & 0x3)) & 0x3;
-                const int prologLength = qMin(w, offsetToAlignOn16Bytes);
-                for (; x < prologLength; ++x) {
+                ALIGNMENT_PROLOGUE_16BYTES(dst, x, w) {
                     quint32 s = src[x];
                     s = BYTE_MUL(s, const_alpha);
                     dst[x] = INTERPOLATE_PIXEL_255(src[x], const_alpha, dst[x], one_minus_const_alpha);
@@ -182,12 +180,10 @@ inline int comp_func_Plus_one_pixel(uint d, const uint s)
 void QT_FASTCALL comp_func_Plus_sse2(uint *dst, const uint *src, int length, uint const_alpha)
 {
     int x = 0;
-    const int offsetToAlignOn16Bytes = (4 - ((reinterpret_cast<quintptr>(dst) >> 2) & 0x3)) & 0x3;
-    const int prologLength = qMin(length, offsetToAlignOn16Bytes);
 
     if (const_alpha == 255) {
         // 1) Prologue: align destination on 16 bytes
-        for (; x < prologLength; ++x)
+        ALIGNMENT_PROLOGUE_16BYTES(dst, x, length)
             dst[x] = comp_func_Plus_one_pixel(dst[x], src[x]);
 
         // 2) composition with SSE2
@@ -208,7 +204,7 @@ void QT_FASTCALL comp_func_Plus_sse2(uint *dst, const uint *src, int length, uin
         const __m128i oneMinusConstAlpha =  _mm_set1_epi16(one_minus_const_alpha);
 
         // 1) Prologue: align destination on 16 bytes
-        for (; x < prologLength; ++x)
+        ALIGNMENT_PROLOGUE_16BYTES(dst, x, length)
             dst[x] = comp_func_Plus_one_pixel_const_alpha(dst[x], src[x], const_alpha, one_minus_const_alpha);
 
         const __m128i half = _mm_set1_epi16(0x80);
@@ -229,6 +225,37 @@ void QT_FASTCALL comp_func_Plus_sse2(uint *dst, const uint *src, int length, uin
     }
 }
 
+void QT_FASTCALL comp_func_Source_sse2(uint *dst, const uint *src, int length, uint const_alpha)
+{
+    if (const_alpha == 255) {
+        ::memcpy(dst, src, length * sizeof(uint));
+    } else {
+        const int ialpha = 255 - const_alpha;
+
+        int x = 0;
+
+        // 1) prologue, align on 16 bytes
+        ALIGNMENT_PROLOGUE_16BYTES(dst, x, length)
+            dst[x] = INTERPOLATE_PIXEL_255(src[x], const_alpha, dst[x], ialpha);
+
+        // 2) interpolate pixels with SSE2
+        const __m128i half = _mm_set1_epi16(0x80);
+        const __m128i colorMask = _mm_set1_epi32(0x00ff00ff);
+        const __m128i constAlphaVector = _mm_set1_epi16(const_alpha);
+        const __m128i oneMinusConstAlpha =  _mm_set1_epi16(ialpha);
+        for (; x < length - 3; x += 4) {
+            const __m128i srcVector = _mm_loadu_si128((__m128i *)&src[x]);
+            __m128i dstVector = _mm_load_si128((__m128i *)&dst[x]);
+            INTERPOLATE_PIXEL_255_SSE2(dstVector, srcVector, dstVector, constAlphaVector, oneMinusConstAlpha, colorMask, half)
+            _mm_store_si128((__m128i *)&dst[x], dstVector);
+        }
+
+        // 3) Epilogue
+        for (; x < length; ++x)
+            dst[x] = INTERPOLATE_PIXEL_255(src[x], const_alpha, dst[x], ialpha);
+    }
+}
+
 void qt_memfill32_sse2(quint32 *dest, quint32 value, int count)
 {
     if (count < 7) {
diff --git a/src/gui/painting/qdrawingprimitive_sse2_p.h b/src/gui/painting/qdrawingprimitive_sse2_p.h
index 18355c2..d8f6bf5 100644
--- a/src/gui/painting/qdrawingprimitive_sse2_p.h
+++ b/src/gui/painting/qdrawingprimitive_sse2_p.h
@@ -143,9 +143,7 @@ QT_BEGIN_NAMESPACE
     int x = 0; \
 \
     /* First, get dst aligned. */ \
-    const int offsetToAlignOn16Bytes = (4 - ((reinterpret_cast<quintptr>(dst) >> 2) & 0x3)) & 0x3;\
-    const int prologLength = qMin(length, offsetToAlignOn16Bytes);\
-    for (; x < prologLength; ++x) { \
+    ALIGNMENT_PROLOGUE_16BYTES(dst, x, length) { \
         uint s = src[x]; \
         if (s >= 0xff000000) \
             dst[x] = s; \
@@ -202,9 +200,7 @@ QT_BEGIN_NAMESPACE
 { \
     int x = 0; \
 \
-    const int offsetToAlignOn16Bytes = (4 - ((reinterpret_cast<quintptr>(dst) >> 2) & 0x3)) & 0x3;\
-    const int prologLength = qMin(length, offsetToAlignOn16Bytes);\
-    for (; x < prologLength; ++x) { \
+    ALIGNMENT_PROLOGUE_16BYTES(dst, x, length) { \
         quint32 s = src[x]; \
         if (s != 0) { \
             s = BYTE_MUL(s, const_alpha); \
diff --git a/src/gui/painting/qgraphicssystem_runtime.cpp b/src/gui/painting/qgraphicssystem_runtime.cpp
index 3438137..2828e9d 100644
--- a/src/gui/painting/qgraphicssystem_runtime.cpp
+++ b/src/gui/painting/qgraphicssystem_runtime.cpp
@@ -53,10 +53,8 @@ QT_BEGIN_NAMESPACE
 static int qt_pixmap_serial = 0;
 
 #define READBACK(f)                                         \
-    m_graphicsSystem->decreaseMemoryUsage(memoryUsage());   \
     f                                                       \
-    readBackInfo();                                         \
-    m_graphicsSystem->increaseMemoryUsage(memoryUsage());   \
+    readBackInfo();
 
 
 class QDeferredGraphicsSystemChange : public QObject
@@ -252,16 +250,8 @@ QPixmapData* QRuntimePixmapData::runtimeData() const
     return m_data;
 }
 
-uint QRuntimePixmapData::memoryUsage() const
-{
-    if(is_null || d == 0)
-        return 0;
-    return w * h * (d / 8);
-}
-
-
 QRuntimeWindowSurface::QRuntimeWindowSurface(const QRuntimeGraphicsSystem *gs, QWidget *window)
-    : QWindowSurface(window), m_windowSurface(0), m_pendingWindowSurface(0), m_graphicsSystem(gs)
+    : QWindowSurface(window), m_graphicsSystem(gs)
 {
 
 }
@@ -269,7 +259,6 @@ QRuntimeWindowSurface::QRuntimeWindowSurface(const QRuntimeGraphicsSystem *gs, Q
 QRuntimeWindowSurface::~QRuntimeWindowSurface()
 {
     m_graphicsSystem->removeWindowSurface(this);
-    delete m_windowSurface;
 }
 
 QPaintDevice *QRuntimeWindowSurface::paintDevice()
@@ -288,16 +277,13 @@ void QRuntimeWindowSurface::flush(QWidget *widget, const QRegion &region,
 #ifdef QT_DEBUG
         qDebug() << "QRuntimeWindowSurface::flush() - destroy pending window surface";
 #endif
-        delete m_pendingWindowSurface;
-        m_pendingWindowSurface = 0;
+        m_pendingWindowSurface.reset();
     }
 }
 
 void QRuntimeWindowSurface::setGeometry(const QRect &rect)
 {
-    m_graphicsSystem->decreaseMemoryUsage(memoryUsage());
     m_windowSurface->setGeometry(rect);
-    m_graphicsSystem->increaseMemoryUsage(memoryUsage());
 }
 
 bool QRuntimeWindowSurface::scroll(const QRegion &area, int dx, int dy)
@@ -330,27 +316,21 @@ QPoint QRuntimeWindowSurface::offset(const QWidget *widget) const
     return m_windowSurface->offset(widget);
 }
 
-uint QRuntimeWindowSurface::memoryUsage() const
-{
-    QPaintDevice *pdev = m_windowSurface->paintDevice();
-    if (pdev && pdev->depth() != 0)
-        return pdev->width() * pdev->height() * (pdev->depth()/8);
-
-    return 0;
-}
-
 QRuntimeGraphicsSystem::QRuntimeGraphicsSystem()
-    : m_memoryUsage(0), m_windowSurfaceDestroyPolicy(DestroyImmediately),
-	m_graphicsSystem(0), m_graphicsSystemChangeMemoryLimit(0)
+    : m_windowSurfaceDestroyPolicy(DestroyImmediately),
+      m_graphicsSystem(0)
 {
     QApplicationPrivate::graphics_system_name = QLatin1String("runtime");
     QApplicationPrivate::runtime_graphics_system = true;
 
+#ifdef QT_DEFAULT_RUNTIME_SYSTEM
+    m_graphicsSystemName = QLatin1String(QT_DEFAULT_RUNTIME_SYSTEM);
+    if (m_graphicsSystemName.isNull())
+#endif
+        m_graphicsSystemName = QLatin1String("raster");
+
 #ifdef Q_OS_SYMBIAN
-    m_graphicsSystemName = QLatin1String("openvg");
     m_windowSurfaceDestroyPolicy = DestroyAfterFirstFlush;
-#else
-    m_graphicsSystemName = QLatin1String("raster");
 #endif
 
     m_graphicsSystem = QGraphicsSystemFactory::create(m_graphicsSystemName);
@@ -373,51 +353,30 @@ QWindowSurface *QRuntimeGraphicsSystem::createWindowSurface(QWidget *widget) con
 {
     Q_ASSERT(m_graphicsSystem);
     QRuntimeWindowSurface *rtSurface = new QRuntimeWindowSurface(this, widget);
-    rtSurface->m_windowSurface = m_graphicsSystem->createWindowSurface(widget);
+    rtSurface->m_windowSurface.reset(m_graphicsSystem->createWindowSurface(widget));
     widget->setWindowSurface(rtSurface);
     m_windowSurfaces << rtSurface;
-    increaseMemoryUsage(rtSurface->memoryUsage());
     return rtSurface;
 }
 
-/*!
-    Sets graphics system when resource memory consumption is under /a memoryUsageLimit.
-*/
-void QRuntimeGraphicsSystem::setGraphicsSystem(const QString &name, uint memoryUsageLimit)
-{
-#ifdef QT_DEBUG
-    qDebug() << "QRuntimeGraphicsSystem::setGraphicsSystem( "<< name <<", " << memoryUsageLimit << ")";
-    qDebug() << "        current approximated graphics system memory usage " << memoryUsage() << " bytes";
-#endif
-    if (memoryUsage() >= memoryUsageLimit) {
-        m_graphicsSystemChangeMemoryLimit = memoryUsageLimit;
-        m_pendingGraphicsSystemName = name;
-    } else {
-        setGraphicsSystem(name);
-    }
-}
-
 void QRuntimeGraphicsSystem::setGraphicsSystem(const QString &name)
 {
     if (m_graphicsSystemName == name)
         return;
 #ifdef QT_DEBUG
     qDebug() << "QRuntimeGraphicsSystem::setGraphicsSystem( " << name << " )";
-    qDebug() << "        current approximated graphics system memory usage "<< memoryUsage() << " bytes";
 #endif
-    delete m_graphicsSystem;
+    QGraphicsSystem *oldSystem = m_graphicsSystem;
     m_graphicsSystem = QGraphicsSystemFactory::create(name);
     m_graphicsSystemName = name;
 
     Q_ASSERT(m_graphicsSystem);
 
-    m_graphicsSystemChangeMemoryLimit = 0;
     m_pendingGraphicsSystemName = QString();
 
     for (int i = 0; i < m_pixmapDatas.size(); ++i) {
         QRuntimePixmapData *proxy = m_pixmapDatas.at(i);
         QPixmapData *newData = m_graphicsSystem->createPixmapData(proxy->m_data);
-        // ### TODO Optimize. Openvg and s60raster graphics systems could switch internal ARGB32_PRE QImage buffers.
         newData->fromImage(proxy->m_data->toImage(), Qt::NoOpaqueDetection);
         delete proxy->m_data;
         proxy->m_data = newData;
@@ -428,58 +387,26 @@ void QRuntimeGraphicsSystem::setGraphicsSystem(const QString &name)
         QRuntimeWindowSurface *proxy = m_windowSurfaces.at(i);
         QWidget *widget = proxy->m_windowSurface->window();
 
-        if(m_windowSurfaceDestroyPolicy == DestroyImmediately) {
-            delete proxy->m_windowSurface;
-            proxy->m_pendingWindowSurface = 0;
-        } else {
-            proxy->m_pendingWindowSurface = proxy->m_windowSurface;
-        }
+        if(m_windowSurfaceDestroyPolicy == DestroyAfterFirstFlush)
+            proxy->m_pendingWindowSurface.reset(proxy->m_windowSurface.take());
 
-        proxy->m_windowSurface = m_graphicsSystem->createWindowSurface(widget);
+        proxy->m_windowSurface.reset(m_graphicsSystem->createWindowSurface(widget));
         qt_widget_private(widget)->invalidateBuffer(widget->rect());
     }
+
+    delete oldSystem;
 }
 
 void QRuntimeGraphicsSystem::removePixmapData(QRuntimePixmapData *pixmapData) const
 {
     int index = m_pixmapDatas.lastIndexOf(pixmapData);
     m_pixmapDatas.removeAt(index);
-    decreaseMemoryUsage(pixmapData->memoryUsage(), true);
 }
 
 void QRuntimeGraphicsSystem::removeWindowSurface(QRuntimeWindowSurface *windowSurface) const
 {
     int index = m_windowSurfaces.lastIndexOf(windowSurface);
     m_windowSurfaces.removeAt(index);
-    decreaseMemoryUsage(windowSurface->memoryUsage(), true);
-}
-
-void QRuntimeGraphicsSystem::increaseMemoryUsage(uint amount) const
-{
-    m_memoryUsage += amount;
-
-    if (m_graphicsSystemChangeMemoryLimit &&
-        m_memoryUsage < m_graphicsSystemChangeMemoryLimit) {
-
-        QRuntimeGraphicsSystem *gs = const_cast<QRuntimeGraphicsSystem*>(this);
-        QDeferredGraphicsSystemChange *deferredChange =
-                    new QDeferredGraphicsSystemChange(gs, m_pendingGraphicsSystemName);
-        deferredChange->launch();
-    }
-}
-
-void QRuntimeGraphicsSystem::decreaseMemoryUsage(uint amount, bool persistent) const
-{
-    m_memoryUsage -= amount;
-
-    if (persistent && m_graphicsSystemChangeMemoryLimit &&
-        m_memoryUsage < m_graphicsSystemChangeMemoryLimit) {
-
-        QRuntimeGraphicsSystem *gs = const_cast<QRuntimeGraphicsSystem*>(this);
-        QDeferredGraphicsSystemChange *deferredChange =
-                    new QDeferredGraphicsSystemChange(gs, m_pendingGraphicsSystemName);
-        deferredChange->launch();
-    }
 }
 
 #include "qgraphicssystem_runtime.moc"
diff --git a/src/gui/painting/qgraphicssystem_runtime_p.h b/src/gui/painting/qgraphicssystem_runtime_p.h
index 7aab89c..0232241 100644
--- a/src/gui/painting/qgraphicssystem_runtime_p.h
+++ b/src/gui/painting/qgraphicssystem_runtime_p.h
@@ -104,8 +104,6 @@ public:
 
     virtual QPixmapData *runtimeData() const;
 
-    virtual uint memoryUsage() const;
-
 private:
     const QRuntimeGraphicsSystem *m_graphicsSystem;
 
@@ -131,10 +129,8 @@ public:
 
     virtual QPoint offset(const QWidget *widget) const;
 
-    virtual uint memoryUsage() const;
-
-    QWindowSurface *m_windowSurface;
-    QWindowSurface *m_pendingWindowSurface;
+    QScopedPointer<QWindowSurface> m_windowSurface;
+    QScopedPointer<QWindowSurface> m_pendingWindowSurface;
 
 private:
     const QRuntimeGraphicsSystem *m_graphicsSystem;
@@ -159,7 +155,6 @@ public:
     void removePixmapData(QRuntimePixmapData *pixmapData) const;
     void removeWindowSurface(QRuntimeWindowSurface *windowSurface) const;
 
-    void setGraphicsSystem(const QString &name, uint memoryUsageLimit);
     void setGraphicsSystem(const QString &name);
     QString graphicsSystemName() const { return m_graphicsSystemName; }
 
@@ -170,22 +165,14 @@ public:
 
     int windowSurfaceDestroyPolicy() const { return m_windowSurfaceDestroyPolicy; }
 
-    uint memoryUsage() const { return m_memoryUsage; }
-
-private:
-
-    void increaseMemoryUsage(uint amount) const;
-    void decreaseMemoryUsage(uint amount, bool persistent = false) const;
 
 private:
-    mutable uint m_memoryUsage;
     int m_windowSurfaceDestroyPolicy;
     QGraphicsSystem *m_graphicsSystem;
     mutable QList<QRuntimePixmapData *> m_pixmapDatas;
     mutable QList<QRuntimeWindowSurface *> m_windowSurfaces;
     QString m_graphicsSystemName;
 
-    uint m_graphicsSystemChangeMemoryLimit;
     QString m_pendingGraphicsSystemName;
 
     friend class QRuntimePixmapData;
diff --git a/src/gui/painting/qoutlinemapper.cpp b/src/gui/painting/qoutlinemapper.cpp
index bf03545..72e5833 100644
--- a/src/gui/painting/qoutlinemapper.cpp
+++ b/src/gui/painting/qoutlinemapper.cpp
@@ -47,8 +47,6 @@
 
 QT_BEGIN_NAMESPACE
 
-static const qreal aliasedCoordinateDelta = 0.5 - 0.015625;
-
 #define qreal_to_fixed_26_6(f) (int(f * 64))
 
 
@@ -216,13 +214,6 @@ void QOutlineMapper::endOutline()
         elements = m_elements_dev.data();
     }
 
-    if (m_round_coords) {
-        // round coordinates to match outlines drawn with drawLine_midpoint_i
-        for (int i = 0; i < m_elements.size(); ++i)
-            elements[i] = QPointF(qFloor(elements[i].x() + aliasedCoordinateDelta),
-                                  qFloor(elements[i].y() + aliasedCoordinateDelta));
-    }
-
     controlPointRect = boundingRect(elements, element_count);
 
 #ifdef QT_DEBUG_CONVERT
diff --git a/src/gui/painting/qoutlinemapper_p.h b/src/gui/painting/qoutlinemapper_p.h
index d534f76..fcfc9bf 100644
--- a/src/gui/painting/qoutlinemapper_p.h
+++ b/src/gui/painting/qoutlinemapper_p.h
@@ -95,8 +95,7 @@ public:
         m_tags(0),
         m_contours(0),
         m_polygon_dev(0),
-        m_in_clip_elements(false),
-        m_round_coords(false)
+        m_in_clip_elements(false)
     {
     }
 
@@ -202,8 +201,6 @@ public:
     QT_FT_Outline *convertPath(const QPainterPath &path);
     QT_FT_Outline *convertPath(const QVectorPath &path);
 
-    void setCoordinateRounding(bool coordinateRounding) { m_round_coords = coordinateRounding; }
-
     inline QPainterPath::ElementType *elementTypes() const { return m_element_types.size() == 0 ? 0 : m_element_types.data(); }
 
 public:
@@ -237,9 +234,6 @@ public:
 
     bool m_valid;
     bool m_in_clip_elements;
-
-private:
-    bool m_round_coords;
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/painting/qpaintbuffer.cpp b/src/gui/painting/qpaintbuffer.cpp
index 3a4c94c..d4a8213 100644
--- a/src/gui/painting/qpaintbuffer.cpp
+++ b/src/gui/painting/qpaintbuffer.cpp
@@ -130,7 +130,7 @@ QPaintBufferPrivate::~QPaintBufferPrivate()
     for (int i = 0; i < commands.size(); ++i) {
         const QPaintBufferCommand &cmd = commands.at(i);
         if (cmd.id == QPaintBufferPrivate::Cmd_DrawTextItem)
-            delete reinterpret_cast<QTextItemIntCopy *>(qVariantValue<void *>(variants.at(cmd.offset)));
+            delete reinterpret_cast<QTextItemIntCopy *>(qvariant_cast<void *>(variants.at(cmd.offset)));
     }
 }
 
@@ -330,7 +330,7 @@ QString QPaintBuffer::commandDescription(int command) const
         break; }
 
     case QPaintBufferPrivate::Cmd_SetBrush: {
-        QBrush brush = qVariantValue<QBrush>(d_ptr->variants.at(cmd.offset));
+        QBrush brush = qvariant_cast<QBrush>(d_ptr->variants.at(cmd.offset));
         debug << "Cmd_SetBrush: " << brush;
         break; }
 
@@ -354,27 +354,27 @@ QString QPaintBuffer::commandDescription(int command) const
         break; }
 
     case QPaintBufferPrivate::Cmd_StrokeVectorPath: {
-        QPen pen = qVariantValue<QPen>(d_ptr->variants.at(cmd.extra));
+        QPen pen = qvariant_cast<QPen>(d_ptr->variants.at(cmd.extra));
         debug << "ExCmd_StrokeVectorPath: size: " << cmd.size
 //                 << ", hints:" << d->ints[cmd.offset2+cmd.size]
                  << "pts/elms:" << cmd.offset << cmd.offset2 << pen;
         break; }
 
     case QPaintBufferPrivate::Cmd_FillVectorPath: {
-        QBrush brush = qVariantValue<QBrush>(d_ptr->variants.at(cmd.extra));
+        QBrush brush = qvariant_cast<QBrush>(d_ptr->variants.at(cmd.extra));
         debug << "ExCmd_FillVectorPath: size: " << cmd.size
 //                 << ", hints:" << d->ints[cmd.offset2+cmd.size]
                  << "pts/elms:" << cmd.offset << cmd.offset2 << brush;
         break; }
 
     case QPaintBufferPrivate::Cmd_FillRectBrush: {
-        QBrush brush = qVariantValue<QBrush>(d_ptr->variants.at(cmd.extra));
+        QBrush brush = qvariant_cast<QBrush>(d_ptr->variants.at(cmd.extra));
         QRectF *rect = (QRectF *)(d_ptr->floats.constData() + cmd.offset);
         debug << "ExCmd_FillRectBrush, offset: " << cmd.offset << " rect: " << *rect << " brush: " << brush;
         break; }
 
     case QPaintBufferPrivate::Cmd_FillRectColor: {
-        QColor color = qVariantValue<QColor>(d_ptr->variants.at(cmd.extra));
+        QColor color = qvariant_cast<QColor>(d_ptr->variants.at(cmd.extra));
         QRectF *rect = (QRectF *)(d_ptr->floats.constData() + cmd.offset);
         debug << "ExCmd_FillRectBrush, offset: " << cmd.offset << " rect: " << *rect << " color: " << color;
         break; }
@@ -451,12 +451,12 @@ QString QPaintBuffer::commandDescription(int command) const
         break; }
 
     case QPaintBufferPrivate::Cmd_SetPen: {
-        QPen pen = qVariantValue<QPen>(d_ptr->variants.at(cmd.offset));
+        QPen pen = qvariant_cast<QPen>(d_ptr->variants.at(cmd.offset));
         debug << "Cmd_SetPen: " << pen;
         break; }
 
     case QPaintBufferPrivate::Cmd_SetTransform: {
-        QTransform xform = qVariantValue<QTransform>(d_ptr->variants.at(cmd.offset));
+        QTransform xform = qvariant_cast<QTransform>(d_ptr->variants.at(cmd.offset));
         debug << "Cmd_SetTransform, offset: " << cmd.offset << xform;
         break; }
 
@@ -532,7 +532,7 @@ QString QPaintBuffer::commandDescription(int command) const
 
     case QPaintBufferPrivate::Cmd_DrawTextItem: {
         QPointF pos(d_ptr->floats.at(cmd.extra), d_ptr->floats.at(cmd.extra+1));
-        QTextItemIntCopy *tiCopy = reinterpret_cast<QTextItemIntCopy *>(qVariantValue<void *>(d_ptr->variants.at(cmd.offset)));
+        QTextItemIntCopy *tiCopy = reinterpret_cast<QTextItemIntCopy *>(qvariant_cast<void *>(d_ptr->variants.at(cmd.offset)));
         QTextItemInt &ti = (*tiCopy)();
         QString text(ti.text());
 
@@ -1287,7 +1287,7 @@ void QPaintBufferEngine::drawTextItem(const QPointF &pos, const QTextItem &ti)
     qDebug() << "QPaintBufferEngine: drawTextItem: pos:" << pos << ti.text();
 #endif
     if (m_stream_raw_text_items) {
-        QPaintBufferCommand *cmd = buffer->addCommand(QPaintBufferPrivate::Cmd_DrawTextItem, qVariantFromValue<void *>(new QTextItemIntCopy(ti)));
+        QPaintBufferCommand *cmd = buffer->addCommand(QPaintBufferPrivate::Cmd_DrawTextItem, QVariant::fromValue<void *>(new QTextItemIntCopy(ti)));
 
         QFont font(ti.font());
         font.setUnderline(false);
@@ -1429,7 +1429,7 @@ void QPainterReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_SetPen: {
-        QPen pen = qVariantValue<QPen>(d->variants.at(cmd.offset));
+        QPen pen = qvariant_cast<QPen>(d->variants.at(cmd.offset));
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> Cmd_SetPen: " << pen;
 #endif
@@ -1437,7 +1437,7 @@ void QPainterReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_SetBrush: {
-        QBrush brush = qVariantValue<QBrush>(d->variants.at(cmd.offset));
+        QBrush brush = qvariant_cast<QBrush>(d->variants.at(cmd.offset));
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> Cmd_SetBrush: " << brush;
 #endif
@@ -1452,7 +1452,7 @@ void QPainterReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_SetTransform: {
-        QTransform xform = qVariantValue<QTransform>(d->variants.at(cmd.offset));
+        QTransform xform = qvariant_cast<QTransform>(d->variants.at(cmd.offset));
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> Cmd_SetTransform, offset: " << cmd.offset << xform;
 #endif
@@ -1520,7 +1520,7 @@ void QPainterReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_StrokeVectorPath: {
-        QPen pen = qVariantValue<QPen>(d->variants.at(cmd.extra));
+        QPen pen = qvariant_cast<QPen>(d->variants.at(cmd.extra));
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> Cmd_StrokeVectorPath: size: " << cmd.size
 //                 << ", hints:" << d->ints[cmd.offset2+cmd.size]
@@ -1531,7 +1531,7 @@ void QPainterReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_FillVectorPath: {
-        QBrush brush = qVariantValue<QBrush>(d->variants.at(cmd.extra));
+        QBrush brush = qvariant_cast<QBrush>(d->variants.at(cmd.extra));
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> Cmd_FillVectorPath: size: " << cmd.size
 //                 << ", hints:" << d->ints[cmd.offset2+cmd.size]
@@ -1705,7 +1705,7 @@ void QPainterReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_FillRectBrush: {
-        QBrush brush = qVariantValue<QBrush>(d->variants.at(cmd.extra));
+        QBrush brush = qvariant_cast<QBrush>(d->variants.at(cmd.extra));
         QRectF *rect = (QRectF *)(d->floats.constData() + cmd.offset);
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> Cmd_FillRectBrush, offset: " << cmd.offset << " rect: " << *rect << " brush: " << brush;
@@ -1714,7 +1714,7 @@ void QPainterReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_FillRectColor: {
-        QColor color = qVariantValue<QColor>(d->variants.at(cmd.extra));
+        QColor color = qvariant_cast<QColor>(d->variants.at(cmd.extra));
         QRectF *rect = (QRectF *)(d->floats.constData() + cmd.offset);
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> Cmd_FillRectBrush, offset: " << cmd.offset << " rect: " << *rect << " color: " << color;
@@ -1790,7 +1790,7 @@ void QPainterReplayer::process(const QPaintBufferCommand &cmd)
 
     case QPaintBufferPrivate::Cmd_DrawTextItem: {
         QPointF pos(d->floats.at(cmd.extra), d->floats.at(cmd.extra+1));
-        QTextItemIntCopy *tiCopy = reinterpret_cast<QTextItemIntCopy *>(qVariantValue<void *>(d->variants.at(cmd.offset)));
+        QTextItemIntCopy *tiCopy = reinterpret_cast<QTextItemIntCopy *>(qvariant_cast<void *>(d->variants.at(cmd.offset)));
         QTextItemInt &ti = (*tiCopy)();
         QString text(ti.text());
 
@@ -1885,7 +1885,7 @@ void QPaintEngineExReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_StrokeVectorPath: {
-        QPen pen = qVariantValue<QPen>(d->variants.at(cmd.extra));
+        QPen pen = qvariant_cast<QPen>(d->variants.at(cmd.extra));
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> ExCmd_StrokeVectorPath: size: " << cmd.size
 //                 << ", hints:" << d->ints[cmd.offset2+cmd.size]
@@ -1896,7 +1896,7 @@ void QPaintEngineExReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_FillVectorPath: {
-        QBrush brush = qVariantValue<QBrush>(d->variants.at(cmd.extra));
+        QBrush brush = qvariant_cast<QBrush>(d->variants.at(cmd.extra));
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> ExCmd_FillVectorPath: size: " << cmd.size
 //                 << ", hints:" << d->ints[cmd.offset2+cmd.size]
@@ -1907,7 +1907,7 @@ void QPaintEngineExReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_FillRectBrush: {
-        QBrush brush = qVariantValue<QBrush>(d->variants.at(cmd.extra));
+        QBrush brush = qvariant_cast<QBrush>(d->variants.at(cmd.extra));
         QRectF *rect = (QRectF *)(d->floats.constData() + cmd.offset);
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> ExCmd_FillRectBrush, offset: " << cmd.offset << " rect: " << *rect << " brush: " << brush;
@@ -1916,7 +1916,7 @@ void QPaintEngineExReplayer::process(const QPaintBufferCommand &cmd)
         break; }
 
     case QPaintBufferPrivate::Cmd_FillRectColor: {
-        QColor color = qVariantValue<QColor>(d->variants.at(cmd.extra));
+        QColor color = qvariant_cast<QColor>(d->variants.at(cmd.extra));
         QRectF *rect = (QRectF *)(d->floats.constData() + cmd.offset);
 #ifdef QPAINTBUFFER_DEBUG_DRAW
         qDebug() << " -> ExCmd_FillRectBrush, offset: " << cmd.offset << " rect: " << *rect << " color: " << color;
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp
index d9f7053..fbfac1a 100644
--- a/src/gui/painting/qpaintengine_raster.cpp
+++ b/src/gui/painting/qpaintengine_raster.cpp
@@ -125,9 +125,6 @@ void dumpClip(int width, int height, const QClipData *clip);
 // 4 pixels.
 #define int_dim(pos, dim) (int(pos+dim) - int(pos))
 
-// use the same rounding as in qrasterizer.cpp (6 bit fixed point)
-static const qreal aliasedCoordinateDelta = 0.5 - 0.015625;
-
 #ifdef Q_WS_WIN
 extern bool qt_cleartype_enabled;
 #endif
@@ -1755,10 +1752,10 @@ void QRasterPaintEngine::stroke(const QVectorPath &path, const QPen &pen)
 
 static inline QRect toNormalizedFillRect(const QRectF &rect)
 {
-    int x1 = qRound(rect.x() + aliasedCoordinateDelta);
-    int y1 = qRound(rect.y() + aliasedCoordinateDelta);
-    int x2 = qRound(rect.right() + aliasedCoordinateDelta);
-    int y2 = qRound(rect.bottom() + aliasedCoordinateDelta);
+    int x1 = qRound(rect.x());
+    int y1 = qRound(rect.y());
+    int x2 = qRound(rect.right());
+    int y2 = qRound(rect.bottom());
 
     if (x2 < x1)
         qSwap(x1, x2);
@@ -2027,7 +2024,6 @@ void QRasterPaintEngine::fillPolygon(const QPointF *points, int pointCount, Poly
 */
 void QRasterPaintEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
 {
-    Q_D(QRasterPaintEngine);
     QRasterPaintEngineState *s = state();
 
 #ifdef QT_DEBUG_DRAW
@@ -2048,9 +2044,7 @@ void QRasterPaintEngine::drawPolygon(const QPointF *points, int pointCount, Poly
     if (mode != PolylineMode) {
         // Do the fill...
         if (s->brushData.blend) {
-            d->outlineMapper->setCoordinateRounding(s->penData.blend && s->flags.fast_pen && s->lastPen.brush().isOpaque());
             fillPolygon(points, pointCount, mode);
-            d->outlineMapper->setCoordinateRounding(false);
         }
     }
 
@@ -2102,7 +2096,6 @@ void QRasterPaintEngine::drawPolygon(const QPoint *points, int pointCount, Polyg
         if (s->brushData.blend) {
             // Compose polygon fill..,
             ensureOutlineMapper();
-            d->outlineMapper->setCoordinateRounding(s->penData.blend != 0);
             d->outlineMapper->beginOutline(mode == WindingMode ? Qt::WindingFill : Qt::OddEvenFill);
             d->outlineMapper->moveTo(*points);
             const QPoint *p = points;
@@ -2116,7 +2109,6 @@ void QRasterPaintEngine::drawPolygon(const QPoint *points, int pointCount, Polyg
             ProcessSpans brushBlend = d->getBrushFunc(d->outlineMapper->controlPointRect,
                                                       &s->brushData);
             d->rasterize(d->outlineMapper->outline(), brushBlend, &s->brushData, d->rasterBuffer.data());
-            d->outlineMapper->setCoordinateRounding(false);
         }
     }
 
@@ -2164,13 +2156,11 @@ void QRasterPaintEngine::strokePolygonCosmetic(const QPointF *points, int pointC
                                   : LineDrawNormal);
     int dashOffset = int(s->lastPen.dashOffset());
 
-    const QPointF offs(aliasedCoordinateDelta, aliasedCoordinateDelta);
-
     // Draw all the line segments.
     for (int i=1; i<pointCount; ++i) {
 
-        QPointF lp1 = points[i-1] * s->matrix + offs;
-        QPointF lp2 = points[i] * s->matrix + offs;
+        QPointF lp1 = points[i-1] * s->matrix;
+        QPointF lp2 = points[i] * s->matrix;
 
         const QRectF brect(lp1, lp2);
         ProcessSpans penBlend = d->getPenFunc(brect, &s->penData);
@@ -2192,8 +2182,8 @@ void QRasterPaintEngine::strokePolygonCosmetic(const QPointF *points, int pointC
 
     // Polygons are implicitly closed.
     if (needs_closing) {
-        QPointF lp1 = points[pointCount-1] * s->matrix + offs;
-        QPointF lp2 = points[0] * s->matrix + offs;
+        QPointF lp1 = points[pointCount-1] * s->matrix;
+        QPointF lp2 = points[0] * s->matrix;
 
         const QRectF brect(lp1, lp2);
         ProcessSpans penBlend = d->getPenFunc(brect, &s->penData);
@@ -2581,10 +2571,7 @@ void QRasterPaintEngine::drawImage(const QRectF &r, const QImage &img, const QRe
     int sr_b = qCeil(sr.bottom()) - 1;
 
     if (s->matrix.type() <= QTransform::TxScale && !s->flags.antialiased && sr_l == sr_r && sr_t == sr_b) {
-        // as fillRect will apply the aliased coordinate delta we need to
-        // subtract it here as we don't use it for image drawing
         QTransform old = s->matrix;
-        s->matrix = s->matrix * QTransform::fromTranslate(-aliasedCoordinateDelta, -aliasedCoordinateDelta);
 
         // Do whatever fillRect() does, but without premultiplying the color if it's already premultiplied.
         QRgb color = img.pixel(sr_l, sr_t);
@@ -2728,11 +2715,9 @@ void QRasterPaintEngine::drawImage(const QRectF &r, const QImage &img, const QRe
             d->initializeRasterizer(&d->image_filler_xform);
             d->rasterizer->setAntialiased(s->flags.antialiased);
 
-            const QPointF offs = s->flags.antialiased ? QPointF() : QPointF(aliasedCoordinateDelta, aliasedCoordinateDelta);
-
             const QRectF &rect = r.normalized();
-            const QPointF a = s->matrix.map((rect.topLeft() + rect.bottomLeft()) * 0.5f) - offs;
-            const QPointF b = s->matrix.map((rect.topRight() + rect.bottomRight()) * 0.5f) - offs;
+            const QPointF a = s->matrix.map((rect.topLeft() + rect.bottomLeft()) * 0.5f);
+            const QPointF b = s->matrix.map((rect.topRight() + rect.bottomRight()) * 0.5f);
 
             if (s->flags.tx_noshear)
                 d->rasterizer->rasterizeLine(a, b, rect.height() / rect.width());
@@ -2741,13 +2726,12 @@ void QRasterPaintEngine::drawImage(const QRectF &r, const QImage &img, const QRe
             return;
         }
 #endif
-        const qreal offs = s->flags.antialiased ? qreal(0) : aliasedCoordinateDelta;
         QPainterPath path;
         path.addRect(r);
         QTransform m = s->matrix;
         s->matrix = QTransform(m.m11(), m.m12(), m.m13(),
                                m.m21(), m.m22(), m.m23(),
-                               m.m31() - offs, m.m32() - offs, m.m33());
+                               m.m31(), m.m32(), m.m33());
         fillPath(path, &d->image_filler_xform);
         s->matrix = m;
     } else {
@@ -3116,13 +3100,11 @@ void QRasterPaintEngine::drawCachedGlyphs(int numGlyphs, const glyph_t *glyphs,
 
     int margin = cache->glyphMargin();
 
-    const QFixed offs = QFixed::fromReal(aliasedCoordinateDelta);
-
     const uchar *bits = image.bits();
     for (int i=0; i<numGlyphs; ++i) {
         const QTextureGlyphCache::Coord &c = cache->coords.value(glyphs[i]);
-        int x = qFloor(positions[i].x + offs) + c.baseLineX - margin;
-        int y = qFloor(positions[i].y + offs) - c.baseLineY - margin;
+        int x = qFloor(positions[i].x) + c.baseLineX - margin;
+        int y = qFloor(positions[i].y) - c.baseLineY - margin;
 
 //         printf("drawing [%d %d %d %d] baseline [%d %d], glyph: %d, to: %d %d, pos: %d %d\n",
 //                c.x, c.y,
@@ -3160,16 +3142,14 @@ void QRasterPaintEngine::drawGlyphsS60(const QPointF &p, const QTextItemInt &ti)
         fe->setFontScale(matrix.m11());
     ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
 
-    const QFixed aliasDelta = QFixed::fromReal(aliasedCoordinateDelta);
-
     for (int i=0; i<glyphs.size(); ++i) {
         TOpenFontCharMetrics tmetrics;
         const TUint8 *glyphBitmapBytes;
         TSize glyphBitmapSize;
         fe->getCharacterData(glyphs[i], tmetrics, glyphBitmapBytes, glyphBitmapSize);
         const glyph_metrics_t metrics = ti.fontEngine->boundingBox(glyphs[i]);
-        const int x = qFloor(positions[i].x + metrics.x + aliasDelta);
-        const int y = qFloor(positions[i].y + metrics.y + aliasDelta);
+        const int x = qFloor(positions[i].x + metrics.x);
+        const int y = qFloor(positions[i].y + metrics.y);
 
         alphaPenBlt(glyphBitmapBytes, glyphBitmapSize.iWidth, 8, x, y, glyphBitmapSize.iWidth, glyphBitmapSize.iHeight);
     }
@@ -3383,7 +3363,7 @@ void QRasterPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
 
 #if defined(Q_WS_QWS)
     if (fontEngine->type() == QFontEngine::Box) {
-        fontEngine->draw(this, qFloor(p.x() + aliasedCoordinateDelta), qFloor(p.y() + aliasedCoordinateDelta), ti);
+        fontEngine->draw(this, qFloor(p.x()), qFloor(p.y()), ti);
         return;
     }
 
@@ -3392,7 +3372,7 @@ void QRasterPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
             || (fontEngine->type() == QFontEngine::Proxy
                 && !(static_cast<QProxyFontEngine *>(fontEngine)->drawAsOutline()))
             )) {
-        fontEngine->draw(this, qFloor(p.x() + aliasedCoordinateDelta), qFloor(p.y() + aliasedCoordinateDelta), ti);
+        fontEngine->draw(this, qFloor(p.x()), qFloor(p.y()), ti);
         return;
     }
 #endif // Q_WS_QWS
@@ -3453,7 +3433,6 @@ void QRasterPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
         return;
     }
 
-    QFixed offs = QFixed::fromReal(aliasedCoordinateDelta);
     FT_Face lockedFace = 0;
 
     int depth;
@@ -3501,8 +3480,8 @@ void QRasterPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
         };
 
         alphaPenBlt(glyph->data, pitch, depth,
-                    qFloor(positions[i].x + offs) + glyph->x,
-                    qFloor(positions[i].y + offs) - glyph->y,
+                    qFloor(positions[i].x) + glyph->x,
+                    qFloor(positions[i].y) - glyph->y,
                     glyph->width, glyph->height);
     }
     if (lockedFace)
@@ -3639,8 +3618,8 @@ void QRasterPaintEngine::drawLines(const QLine *lines, int lineCount)
 
         int m11 = int(s->matrix.m11());
         int m22 = int(s->matrix.m22());
-        int dx = qFloor(s->matrix.dx() + aliasedCoordinateDelta);
-        int dy = qFloor(s->matrix.dy() + aliasedCoordinateDelta);
+        int dx = qFloor(s->matrix.dx());
+        int dy = qFloor(s->matrix.dy());
         for (int i=0; i<lineCount; ++i) {
             int dashOffset = int(s->lastPen.dashOffset());
             if (s->flags.int_xform) {
@@ -3744,7 +3723,7 @@ void QRasterPaintEngine::drawLines(const QLineF *lines, int lineCount)
 
         for (int i=0; i<lineCount; ++i) {
             int dashOffset = int(s->lastPen.dashOffset());
-            QLineF line = (lines[i] * s->matrix).translated(aliasedCoordinateDelta, aliasedCoordinateDelta);
+            QLineF line = lines[i] * s->matrix;
             const QRectF brect(QPointF(line.x1(), line.y1()),
                                QPointF(line.x2(), line.y2()));
             ProcessSpans penBlend = d->getPenFunc(brect, &s->penData);
diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index e0746fb..881bd6e 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -831,7 +831,7 @@ void QPaintEngineEx::drawEllipse(const QRectF &r)
 
     int point_count = 0;
     x.points[0] = qt_curves_for_arc(r, 0, -360, x.points + 1, &point_count);
-    QVectorPath vp((qreal *) pts, 13, qpaintengineex_ellipse_types, QVectorPath::EllipseHint);
+    QVectorPath vp((qreal *) pts, point_count, qpaintengineex_ellipse_types, QVectorPath::EllipseHint);
     draw(vp);
 }
 
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index f24eafd..314f349 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -88,14 +88,19 @@ bool qt_show_painter_debug_output = true;
 
 extern QPixmap qt_pixmapForBrush(int style, bool invert);
 
-static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, QFontEngine *fe,
-                                   QTextCharFormat::UnderlineStyle underlineStyle,
-                                   QTextItemInt::RenderFlags flags, qreal width,
-                                   const QTextCharFormat &charFormat);
 void qt_format_text(const QFont &font,
                     const QRectF &_r, int tf, const QTextOption *option, const QString& str, QRectF *brect,
                     int tabstops, int* tabarray, int tabarraylen,
                     QPainter *painter);
+static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, const QFontEngine *fe,
+                                   QTextCharFormat::UnderlineStyle underlineStyle,
+                                   QTextItem::RenderFlags flags, qreal width,
+                                   const QTextCharFormat &charFormat);
+// Helper function to calculate left most position, width and flags for decoration drawing
+static void drawDecorationForGlyphs(QPainter *painter, const glyph_t *glyphArray,
+                                    const QFixedPoint *positions, int glyphCount,
+                                    QFontEngine *fontEngine, const QFont &font,
+                                    const QTextCharFormat &charFormat);
 
 static inline QGradient::CoordinateMode coordinateMode(const QBrush &brush)
 {
@@ -2702,6 +2707,61 @@ QPainterPath QPainter::clipPath() const
 }
 
 /*!
+    Returns the bounding rectangle of the current clip if there is a clip;
+    otherwise returns an empty rectangle. Note that the clip region is
+    given in logical coordinates.
+
+    The bounding rectangle is not guaranteed to be tight.
+
+    \sa setClipRect(), setClipPath(), setClipRegion()
+
+    \since 4.8
+ */
+
+QRectF QPainter::clipBoundingRect() const
+{
+    Q_D(const QPainter);
+
+    if (!d->engine) {
+        qWarning("QPainter::clipBoundingRect: Painter not active");
+        return QRectF();
+    }
+
+    // Accumulate the bounding box in device space. This is not 100%
+    // precise, but it fits within the guarantee and it is resonably
+    // fast.
+    QRectF bounds;
+    for (int i=0; i<d->state->clipInfo.size(); ++i) {
+         QRectF r;
+         const QPainterClipInfo &info = d->state->clipInfo.at(i);
+
+         if (info.clipType == QPainterClipInfo::RectClip)
+             r = info.rect;
+         else if (info.clipType == QPainterClipInfo::RegionClip)
+             r = info.region.boundingRect();
+         else
+             r = info.path.boundingRect();
+
+         r = info.matrix.mapRect(r);
+
+         if (i == 0)
+             bounds = r;
+         else if (info.operation == Qt::IntersectClip)
+             bounds &= r;
+         else if (info.operation == Qt::UniteClip)
+             bounds |= r;
+    }
+
+
+    // Map the rectangle back into logical space using the inverse
+    // matrix.
+    if (!d->txinv)
+        const_cast<QPainter *>(this)->d_ptr->updateInvMatrix();
+
+    return d->invMatrix.mapRect(bounds);
+}
+
+/*!
     \fn void QPainter::setClipRect(const QRectF &rectangle, Qt::ClipOperation operation)
 
     Enables clipping, and sets the clip region to the given \a
@@ -5996,6 +6056,10 @@ void QPainter::drawStaticText(const QPointF &topLeftPosition, const QStaticText
             currentColor = item->color;
         }
         d->extended->drawStaticTextItem(item);
+
+        drawDecorationForGlyphs(this, item->glyphs, item->glyphPositions,
+                                item->numGlyphs, item->fontEngine, staticText_d->font,
+                                QTextCharFormat());
     }
     if (currentColor != oldPen.color())
         setPen(oldPen);
@@ -6363,9 +6427,9 @@ static QPixmap generateWavyPixmap(qreal maxRadius, const QPen &pen)
     return pixmap;
 }
 
-static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, QFontEngine *fe,
+static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, const QFontEngine *fe,
                                    QTextCharFormat::UnderlineStyle underlineStyle,
-                                   QTextItemInt::RenderFlags flags, qreal width,
+                                   QTextItem::RenderFlags flags, qreal width,
                                    const QTextCharFormat &charFormat)
 {
     if (underlineStyle == QTextCharFormat::NoUnderline
@@ -6439,6 +6503,50 @@ static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, QFontE
     painter->setBrush(oldBrush);
 }
 
+static void drawDecorationForGlyphs(QPainter *painter, const glyph_t *glyphArray,
+                                    const QFixedPoint *positions, int glyphCount,
+                                    QFontEngine *fontEngine, const QFont &font,
+                                    const QTextCharFormat &charFormat)
+{
+    if (!(font.underline() || font.strikeOut() || font.overline()))
+        return;
+
+    QFixed leftMost;
+    QFixed rightMost;
+    QFixed baseLine;
+    for (int i=0; i<glyphCount; ++i) {
+        glyph_metrics_t gm = fontEngine->boundingBox(glyphArray[i]);
+        if (i == 0 || leftMost > positions[i].x)
+            leftMost = positions[i].x;
+
+        // We don't support glyphs that do not share a common baseline. If this turns out to
+        // be a relevant use case, then we need to find clusters of glyphs that share a baseline
+        // and do a drawTextItemDecorations call per cluster.
+        if (i == 0 || baseLine < positions[i].y)
+            baseLine = positions[i].y;
+
+        // We use the advance rather than the actual bounds to match the algorithm in drawText()
+        if (i == 0 || rightMost < positions[i].x + gm.xoff)
+            rightMost = positions[i].x + gm.xoff;
+    }
+
+    QFixed width = rightMost - leftMost;
+    QTextItem::RenderFlags flags = 0;
+
+    if (font.underline())
+        flags |= QTextItem::Underline;
+    if (font.overline())
+        flags |= QTextItem::Overline;
+    if (font.strikeOut())
+        flags |= QTextItem::StrikeOut;
+
+    drawTextItemDecoration(painter, QPointF(leftMost.toReal(), baseLine.toReal()),
+                           fontEngine,
+                           font.underline() ? QTextCharFormat::SingleUnderline
+                                            : QTextCharFormat::NoUnderline, flags,
+                           width.toReal(), charFormat);
+}
+
 void QPainter::drawTextItem(const QPointF &p, const QTextItem &_ti)
 {
 #ifdef QT_DEBUG_DRAW
diff --git a/src/gui/painting/qpainter.h b/src/gui/painting/qpainter.h
index 85751a9..96305e3 100644
--- a/src/gui/painting/qpainter.h
+++ b/src/gui/painting/qpainter.h
@@ -222,6 +222,8 @@ public:
     void setClipping(bool enable);
     bool hasClipping() const;
 
+    QRectF clipBoundingRect() const;
+
     void save();
     void restore();
 
diff --git a/src/gui/painting/qrasterizer.cpp b/src/gui/painting/qrasterizer.cpp
index f8f8afb..c92d8d5 100644
--- a/src/gui/painting/qrasterizer.cpp
+++ b/src/gui/painting/qrasterizer.cpp
@@ -62,8 +62,8 @@ typedef int Q16Dot16;
 
 #define SPAN_BUFFER_SIZE 256
 
-#define COORD_ROUNDING 1 // 0: round up, 1: round down
-#define COORD_OFFSET 32 // 26.6, 32 is half a pixel
+#define COORD_ROUNDING 0 // 0: round up, 1: round down
+#define COORD_OFFSET 0 // 26.6, 32 is half a pixel
 
 class QSpanBuffer {
 public:
@@ -718,7 +718,7 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
     QPointF pa = a;
     QPointF pb = b;
 
-    QPointF offs = QPointF(qAbs(b.y() - a.y()), qAbs(b.x() - a.x())) * width * 0.5;    
+    QPointF offs = QPointF(qAbs(b.y() - a.y()), qAbs(b.x() - a.x())) * width * 0.5;
     if (squareCap)
         offs += QPointF(offs.y(), offs.x());
     const QRectF clip(d->clipRect.topLeft() - offs, d->clipRect.bottomRight() + QPoint(1, 1) + offs);
diff --git a/src/gui/painting/qwindowsurface_s60.cpp b/src/gui/painting/qwindowsurface_s60.cpp
index 477bd93..8bac1f5 100644
--- a/src/gui/painting/qwindowsurface_s60.cpp
+++ b/src/gui/painting/qwindowsurface_s60.cpp
@@ -67,10 +67,14 @@ QS60WindowSurface::QS60WindowSurface(QWidget* widget)
 
     TDisplayMode mode = S60->screenDevice()->DisplayMode();
     bool isOpaque = qt_widget_private(widget)->isOpaque;
-    if (mode == EColor16MA && isOpaque)
-        mode = EColor16MU; // Faster since 16MU -> 16MA is typically accelerated
-    else if (mode == EColor16MU && !isOpaque)
-        mode = EColor16MA; // Try for transparency anyway
+    if (isOpaque) {
+        mode = EColor16MU;
+    } else  {
+        if (QSysInfo::symbianVersion() >= QSysInfo::SV_SF_3)
+            mode = Q_SYMBIAN_ECOLOR16MAP; // Symbian^3 WServ has support for ARGB32_PRE
+        else
+            mode = EColor16MA; // Symbian prior to Symbian^3 sw accelerates EColor16MA
+    }
 
     // We create empty CFbsBitmap here -> it will be resized in setGeometry
     CFbsBitmap *bitmap = q_check_ptr(new CFbsBitmap);	// CBase derived object needs check on new
diff --git a/src/gui/s60framework/qs60mainapplication.cpp b/src/gui/s60framework/qs60mainapplication.cpp
index 0f9367e..5d4c54e 100644
--- a/src/gui/s60framework/qs60mainapplication.cpp
+++ b/src/gui/s60framework/qs60mainapplication.cpp
@@ -136,16 +136,25 @@ TFileName QS60MainApplication::ResourceFileName() const
     return KNullDesC();
 }
 
+/*!
+  \internal
+*/
 void QS60MainApplication::PreDocConstructL()
 {
     QS60MainApplicationBase::PreDocConstructL();
 }
 
+/*!
+  \internal
+*/
 CDictionaryStore *QS60MainApplication::OpenIniFileLC(RFs &aFs) const
 {
     return QS60MainApplicationBase::OpenIniFileLC(aFs);
 }
 
+/*!
+  \internal
+*/
 void QS60MainApplication::NewAppServerL(CApaAppServer *&aAppServer)
 {
     QS60MainApplicationBase::NewAppServerL(aAppServer);
diff --git a/src/gui/s60framework/qs60mainappui.cpp b/src/gui/s60framework/qs60mainappui.cpp
index 40c2d03..ea9dbb3 100644
--- a/src/gui/s60framework/qs60mainappui.cpp
+++ b/src/gui/s60framework/qs60mainappui.cpp
@@ -281,76 +281,121 @@ void QS60MainAppUi::RestoreMenuL(CCoeControl *menuWindow, TInt resourceId, TMenu
     }
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::Exit()
 {
     QS60MainAppUiBase::Exit();
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::SetFadedL(TBool aFaded)
 {
     QS60MainAppUiBase::SetFadedL(aFaded);
 }
 
+/*!
+  \internal
+*/
 TRect QS60MainAppUi::ApplicationRect() const
 {
     return QS60MainAppUiBase::ApplicationRect();
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::HandleScreenDeviceChangedL()
 {
     QS60MainAppUiBase::HandleScreenDeviceChangedL();
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::HandleApplicationSpecificEventL(TInt aType, const TWsEvent &aEvent)
 {
     QS60MainAppUiBase::HandleApplicationSpecificEventL(aType, aEvent);
 }
 
+/*!
+  \internal
+*/
 TTypeUid::Ptr QS60MainAppUi::MopSupplyObject(TTypeUid aId)
 {
     return QS60MainAppUiBase::MopSupplyObject(aId);
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::ProcessCommandL(TInt aCommand)
 {
     QS60MainAppUiBase::ProcessCommandL(aCommand);
 }
 
+/*!
+  \internal
+*/
 TErrorHandlerResponse QS60MainAppUi::HandleError (TInt aError, const SExtendedError &aExtErr, TDes &aErrorText, TDes &aContextText)
 {
     return QS60MainAppUiBase::HandleError(aError, aExtErr, aErrorText, aContextText);
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::HandleViewDeactivation(const TVwsViewId &aViewIdToBeDeactivated, const TVwsViewId &aNewlyActivatedViewId)
 {
     QS60MainAppUiBase::HandleViewDeactivation(aViewIdToBeDeactivated, aNewlyActivatedViewId);
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::PrepareToExit()
 {
     QS60MainAppUiBase::PrepareToExit();
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::HandleTouchPaneSizeChange()
 {
     QS60MainAppUiBase::HandleTouchPaneSizeChange();
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::HandleSystemEventL(const TWsEvent &aEvent)
 {
     QS60MainAppUiBase::HandleSystemEventL(aEvent);
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::Reserved_MtsmPosition()
 {
     QS60MainAppUiBase::Reserved_MtsmPosition();
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::Reserved_MtsmObject()
 {
     QS60MainAppUiBase::Reserved_MtsmObject();
 }
 
+/*!
+  \internal
+*/
 void QS60MainAppUi::HandleForegroundEventL(TBool aForeground)
 {
     QS60MainAppUiBase::HandleForegroundEventL(aForeground);
diff --git a/src/gui/s60framework/qs60maindocument.cpp b/src/gui/s60framework/qs60maindocument.cpp
index ed33a41..26e2d00 100644
--- a/src/gui/s60framework/qs60maindocument.cpp
+++ b/src/gui/s60framework/qs60maindocument.cpp
@@ -105,11 +105,17 @@ CEikAppUi *QS60MainDocument::CreateAppUiL()
     return (static_cast <CEikAppUi*>(new(ELeave)QS60MainAppUi));
 }
 
+/*!
+  \internal
+ */
 CFileStore *QS60MainDocument::OpenFileL(TBool aDoOpen, const TDesC &aFilename, RFs &aFs)
 {
     return QS60MainDocumentBase::OpenFileL(aDoOpen, aFilename, aFs);
 }
 
+/*!
+  \internal
+ */
 void QS60MainDocument::OpenFileL(CFileStore *&aFileStore, RFile &aFile)
 {
     QS60MainDocumentBase::OpenFileL(aFileStore, aFile);
diff --git a/src/gui/s60framework/qs60maindocument.h b/src/gui/s60framework/qs60maindocument.h
index 2f0564f..fc32d8b 100644
--- a/src/gui/s60framework/qs60maindocument.h
+++ b/src/gui/s60framework/qs60maindocument.h
@@ -47,7 +47,7 @@
 #ifdef Q_OS_SYMBIAN
 
 #ifdef Q_WS_S60
-#include <akndoc.h>
+#include <AknDoc.h>
 typedef CAknDocument QS60MainDocumentBase;
 #else
 #include <eikdoc.h>
diff --git a/src/gui/styles/qmacstyle_mac.h b/src/gui/styles/qmacstyle_mac.h
index bcebb1d..d5fcdae 100644
--- a/src/gui/styles/qmacstyle_mac.h
+++ b/src/gui/styles/qmacstyle_mac.h
@@ -60,6 +60,8 @@ class QPalette;
 #define Q_GUI_EXPORT_STYLE_MAC Q_GUI_EXPORT
 #endif
 
+class QPushButton;
+class QStyleOptionButton;
 class QMacStylePrivate;
 class Q_GUI_EXPORT_STYLE_MAC QMacStyle : public QWindowsStyle
 {
@@ -133,6 +135,8 @@ private:
     Q_DISABLE_COPY(QMacStyle)
 
     QMacStylePrivate *d;
+
+    friend bool qt_mac_buttonIsRenderedFlat(const QPushButton *pushButton, const QStyleOptionButton *option);
 };
 
 #endif // Q_WS_MAC
diff --git a/src/gui/styles/qmacstyle_mac.mm b/src/gui/styles/qmacstyle_mac.mm
index 2005e4a..556e0f3 100644
--- a/src/gui/styles/qmacstyle_mac.mm
+++ b/src/gui/styles/qmacstyle_mac.mm
@@ -1059,6 +1059,16 @@ void QMacStylePrivate::initHIThemePushButton(const QStyleOptionButton *btn,
     }
 }
 
+bool qt_mac_buttonIsRenderedFlat(const QPushButton *pushButton, const QStyleOptionButton *option)
+{
+    QMacStyle *macStyle = qobject_cast<QMacStyle *>(pushButton->style());
+    if (!macStyle)
+        return false;
+    HIThemeButtonDrawInfo bdi;
+    macStyle->d->initHIThemePushButton(option, pushButton, kThemeStateActive, &bdi);
+    return bdi.kind == kThemeBevelButton;
+}
+
 /**
     Creates a HIThemeButtonDrawInfo structure that specifies the correct button
     kind and other details to use for drawing the given combobox. Which button
@@ -1430,6 +1440,9 @@ QMacStylePrivate::QMacStylePrivate(QMacStyle *style)
 
 bool QMacStylePrivate::animatable(QMacStylePrivate::Animates as, const QWidget *w) const
 {
+    if (!w)
+        return false;
+
     if (as == AquaPushButton) {
         QPushButton *pb = const_cast<QPushButton *>(static_cast<const QPushButton *>(w));
         if (w->window()->isActiveWindow() && pb && !mouseDown) {
@@ -1629,7 +1642,7 @@ bool QMacStylePrivate::eventFilter(QObject *o, QEvent *e)
         case QEvent::FocusOut:
         case QEvent::Show:
         case QEvent::WindowActivate: {
-            QList<QPushButton *> list = qFindChildren<QPushButton *>(btn->window());
+            QList<QPushButton *> list = btn->window()->findChildren<QPushButton *>();
             for (int i = 0; i < list.size(); ++i) {
                 QPushButton *pBtn = list.at(i);
                 if ((e->type() == QEvent::FocusOut
diff --git a/src/gui/styles/qmacstyle_mac_p.h b/src/gui/styles/qmacstyle_mac_p.h
index 5a0ba4c..f9b9d30 100644
--- a/src/gui/styles/qmacstyle_mac_p.h
+++ b/src/gui/styles/qmacstyle_mac_p.h
@@ -150,6 +150,8 @@ enum QAquaWidgetSize { QAquaSizeLarge = 0, QAquaSizeSmall = 1, QAquaSizeMini = 2
         return sizes[controlSize]; \
     } while (0)
 
+bool qt_mac_buttonIsRenderedFlat(const QPushButton *pushButton, const QStyleOptionButton *option);
+
 class QMacStylePrivate : public QObject
 {
     Q_OBJECT
diff --git a/src/gui/styles/qplastiquestyle.cpp b/src/gui/styles/qplastiquestyle.cpp
index 20d9bd9..4690a71 100644
--- a/src/gui/styles/qplastiquestyle.cpp
+++ b/src/gui/styles/qplastiquestyle.cpp
@@ -1054,7 +1054,7 @@ void QPlastiqueStylePrivate::drawPartialFrame(QPainter *painter, const QStyleOpt
     bool reverse = option->direction == Qt::RightToLeft;
     QStyleOptionFrame frameOpt;
 #ifndef QT_NO_LINEEDIT
-    if (QLineEdit *lineedit = qFindChild<QLineEdit *>(widget))
+    if (QLineEdit *lineedit = widget->findChild<QLineEdit *>())
         frameOpt.initFrom(lineedit);
 #else
     Q_UNUSED(widget)
diff --git a/src/gui/styles/qs60style.cpp b/src/gui/styles/qs60style.cpp
index e28403b..b11fb2b 100644
--- a/src/gui/styles/qs60style.cpp
+++ b/src/gui/styles/qs60style.cpp
@@ -1412,7 +1412,7 @@ void QS60Style::drawControl(ControlElement element, const QStyleOption *option,
 
             bool isScrollBarVisible = false;
             int scrollBarWidth = 0;
-            QList<QScrollBar *> scrollBars = qFindChildren<QScrollBar *>(widget);
+            QList<QScrollBar *> scrollBars = widget->findChildren<QScrollBar *>();
             for (int i = 0; i < scrollBars.size(); ++i) {
                 QScrollBar *scrollBar = scrollBars.at(i);
                 if (scrollBar && scrollBar->orientation() == Qt::Vertical) {
diff --git a/src/gui/styles/qs60style_s60.cpp b/src/gui/styles/qs60style_s60.cpp
index 2527662..f44b85e 100644
--- a/src/gui/styles/qs60style_s60.cpp
+++ b/src/gui/styles/qs60style_s60.cpp
@@ -58,12 +58,12 @@
 #include <AknsSkinInstance.h>
 #include <AknsBasicBackgroundControlContext.h>
 #include <avkon.mbg>
-#include <aknfontaccess.h>
-#include <aknlayoutfont.h>
+#include <AknFontAccess.h>
+#include <AknLayoutFont.h>
 #include <AknUtils.h>
 #include <aknnavi.h>
 #include <gulicon.h>
-#include <aknbitmapanimation.h>
+#include <AknBitmapAnimation.h>
 
 #if !defined(QT_NO_STYLE_S60) || defined(QT_PLUGIN)
 
diff --git a/src/gui/styles/qstyle.cpp b/src/gui/styles/qstyle.cpp
index 687e587..0a75492 100644
--- a/src/gui/styles/qstyle.cpp
+++ b/src/gui/styles/qstyle.cpp
@@ -325,7 +325,7 @@ static int unpackControlTypes(QSizePolicy::ControlTypes controls, QSizePolicy::C
     control over size of header items and row and column sizes.
 
     \sa QStyleOption, QStylePainter, {Styles Example},
-        {Styles &amp Style Aware Widgets}, QStyledItemDelegate
+        {Styles and Style Aware Widgets}, QStyledItemDelegate
 */
 
 /*!
diff --git a/src/gui/styles/qstylesheetstyle.cpp b/src/gui/styles/qstylesheetstyle.cpp
index dff525e..7351a7d 100644
--- a/src/gui/styles/qstylesheetstyle.cpp
+++ b/src/gui/styles/qstylesheetstyle.cpp
@@ -2342,7 +2342,7 @@ static QWidget *embeddedWidget(QWidget *w)
 
 #ifndef QT_NO_SPINBOX
     if (QAbstractSpinBox *sb = qobject_cast<QAbstractSpinBox *>(w))
-        return qFindChild<QLineEdit *>(sb);
+        return sb->findChild<QLineEdit *>();
 #endif
 
 #ifndef QT_NO_SCROLLAREA
@@ -2583,7 +2583,7 @@ void QStyleSheetStyle::unsetPalette(QWidget *w)
     }
     QVariant oldFont = w->property("_q_styleSheetWidgetFont");
     if (oldFont.isValid()) {
-        w->setFont(qVariantValue<QFont>(oldFont));
+        w->setFont(qvariant_cast<QFont>(oldFont));
     }
     if (autoFillDisabledWidgets->contains(w)) {
         embeddedWidget(w)->setAutoFillBackground(true);
@@ -2795,7 +2795,7 @@ void QStyleSheetStyle::polish(QPalette &pal)
 
 void QStyleSheetStyle::repolish(QWidget *w)
 {
-    QList<const QWidget *> children = qFindChildren<const QWidget *>(w, QString());
+    QList<const QWidget *> children = w->findChildren<const QWidget *>(QString());
     children.append(w);
     styleSheetCache->remove(w);
     updateWidgets(children);
@@ -4094,7 +4094,7 @@ void QStyleSheetStyle::drawControl(ControlElement ce, const QStyleOption *opt, Q
     if (pe1 != PseudoElement_None) {
         QRenderRule subRule = renderRule(w, opt, pe1);
         if (subRule.bg != 0 || subRule.hasDrawable()) {
-            //We test subRule.bg dirrectly because hasBackground() would return false for background:none.
+            //We test subRule.bg directly because hasBackground() would return false for background:none.
             //But we still don't want the default drawning in that case (example for QScrollBar::add-page) (task 198926)
             subRule.drawRule(p, opt->rect);
         } else if (fallback) {
@@ -5074,7 +5074,7 @@ QIcon QStyleSheetStyle::standardIconImplementation(StandardPixmap standardIcon,
     if (!s.isEmpty()) {
         QRenderRule rule = renderRule(w, opt);
         if (rule.hasStyleHint(s))
-            return qVariantValue<QIcon>(rule.styleHint(s));
+            return qvariant_cast<QIcon>(rule.styleHint(s));
     }
     return baseStyle()->standardIcon(standardIcon, opt, w);
 }
@@ -5092,7 +5092,7 @@ QPixmap QStyleSheetStyle::standardPixmap(StandardPixmap standardPixmap, const QS
     if (!s.isEmpty()) {
         QRenderRule rule = renderRule(w, opt);
         if (rule.hasStyleHint(s)) {
-            QIcon icon = qVariantValue<QIcon>(rule.styleHint(s));
+            QIcon icon = qvariant_cast<QIcon>(rule.styleHint(s));
             return icon.pixmap(16, 16); // ###: unhard-code this if someone complains
         }
     }
@@ -5186,7 +5186,7 @@ int QStyleSheetStyle::styleHint(StyleHint sh, const QStyleOption *opt, const QWi
         case SH_ComboBox_PopupFrameStyle:
 #ifndef QT_NO_COMBOBOX
             if (qobject_cast<const QComboBox *>(w)) {
-                QAbstractItemView *view = qFindChild<QAbstractItemView *>(w);
+                QAbstractItemView *view = w->findChild<QAbstractItemView *>();
                 if (view) {
                     view->ensurePolished();
                     QRenderRule subRule = renderRule(view, PseudoElement_None);
diff --git a/src/gui/styles/qwindowsstyle.cpp b/src/gui/styles/qwindowsstyle.cpp
index 579dd0b..8f1accb 100644
--- a/src/gui/styles/qwindowsstyle.cpp
+++ b/src/gui/styles/qwindowsstyle.cpp
@@ -175,7 +175,7 @@ bool QWindowsStyle::eventFilter(QObject *o, QEvent *e)
             widget = widget->window();
 
             // Alt has been pressed - find all widgets that care
-            QList<QWidget *> l = qFindChildren<QWidget *>(widget);
+            QList<QWidget *> l = widget->findChildren<QWidget *>();
             for (int pos=0 ; pos < l.size() ; ++pos) {
                 QWidget *w = l.at(pos);
                 if (w->isWindow() || !w->isVisible() ||
@@ -198,7 +198,7 @@ bool QWindowsStyle::eventFilter(QObject *o, QEvent *e)
             // Update state and repaint the menu bars.
             d->alt_down = false;
 #ifndef QT_NO_MENUBAR
-            QList<QMenuBar *> l = qFindChildren<QMenuBar *>(widget);
+            QList<QMenuBar *> l = widget->findChildren<QMenuBar *>();
             for (int i = 0; i < l.size(); ++i)
                 l.at(i)->update();
 #endif
@@ -1160,7 +1160,7 @@ int QWindowsStyle::styleHint(StyleHint hint, const QStyleOption *opt, const QWid
             if (!menuBar && qobject_cast<const QMenu *>(widget)) {
                 QWidget *w = QApplication::activeWindow();
                 if (w && w != widget)
-                    menuBar = qFindChild<QMenuBar *>(w);
+                    menuBar = w->findChild<QMenuBar *>();
             }
             // If we paint a menu bar draw underlines if is in the keyboardState
             if (menuBar) {
diff --git a/src/gui/styles/qwindowsvistastyle.cpp b/src/gui/styles/qwindowsvistastyle.cpp
index 8511592..8cb57d5 100644
--- a/src/gui/styles/qwindowsvistastyle.cpp
+++ b/src/gui/styles/qwindowsvistastyle.cpp
@@ -841,10 +841,10 @@ void QWindowsVistaStyle::drawPrimitive(PrimitiveElement element, const QStyleOpt
             const QDialogButtonBox *buttonBox = 0;
 
             if (qobject_cast<const QMessageBox *> (widget))
-                buttonBox = qFindChild<const QDialogButtonBox *>(widget,QLatin1String("qt_msgbox_buttonbox"));
+                buttonBox = widget->findChild<const QDialogButtonBox *>(QLatin1String("qt_msgbox_buttonbox"));
 #ifndef QT_NO_INPUTDIALOG
             else if (qobject_cast<const QInputDialog *> (widget))
-                buttonBox = qFindChild<const QDialogButtonBox *>(widget,QLatin1String("qt_inputdlg_buttonbox"));
+                buttonBox = widget->findChild<const QDialogButtonBox *>(QLatin1String("qt_inputdlg_buttonbox"));
 #endif // QT_NO_INPUTDIALOG
 
             if (buttonBox) {
@@ -2395,14 +2395,14 @@ void QWindowsVistaStyle::polish(QWidget *widget)
         }
     } else if (qobject_cast<QMessageBox *> (widget)) {
         widget->setAttribute(Qt::WA_StyledBackground);
-        QDialogButtonBox *buttonBox = qFindChild<QDialogButtonBox *>(widget,QLatin1String("qt_msgbox_buttonbox"));
+        QDialogButtonBox *buttonBox = widget->findChild<QDialogButtonBox *>(QLatin1String("qt_msgbox_buttonbox"));
         if (buttonBox)
             buttonBox->setContentsMargins(0, 9, 0, 0);
     }
 #ifndef QT_NO_INPUTDIALOG
     else if (qobject_cast<QInputDialog *> (widget)) {
         widget->setAttribute(Qt::WA_StyledBackground);
-        QDialogButtonBox *buttonBox = qFindChild<QDialogButtonBox *>(widget,QLatin1String("qt_inputdlg_buttonbox"));
+        QDialogButtonBox *buttonBox = widget->findChild<QDialogButtonBox *>(QLatin1String("qt_inputdlg_buttonbox"));
         if (buttonBox)
             buttonBox->setContentsMargins(0, 9, 0, 0);
     }
@@ -2434,14 +2434,14 @@ void QWindowsVistaStyle::unpolish(QWidget *widget)
         widget->setAttribute(Qt::WA_Hover, false);
     else if (qobject_cast<QMessageBox *> (widget)) {
         widget->setAttribute(Qt::WA_StyledBackground, false);
-        QDialogButtonBox *buttonBox = qFindChild<QDialogButtonBox *>(widget,QLatin1String("qt_msgbox_buttonbox"));
+        QDialogButtonBox *buttonBox = widget->findChild<QDialogButtonBox *>(QLatin1String("qt_msgbox_buttonbox"));
         if (buttonBox)
             buttonBox->setContentsMargins(0, 0, 0, 0);
     }
 #ifndef QT_NO_INPUTDIALOG
     else if (qobject_cast<QInputDialog *> (widget)) {
         widget->setAttribute(Qt::WA_StyledBackground, false);
-        QDialogButtonBox *buttonBox = qFindChild<QDialogButtonBox *>(widget,QLatin1String("qt_inputdlg_buttonbox"));
+        QDialogButtonBox *buttonBox = widget->findChild<QDialogButtonBox *>(QLatin1String("qt_inputdlg_buttonbox"));
         if (buttonBox)
             buttonBox->setContentsMargins(0, 0, 0, 0);
     }
diff --git a/src/gui/text/qcssparser.cpp b/src/gui/text/qcssparser.cpp
index b3d2526..3fc6722 100644
--- a/src/gui/text/qcssparser.cpp
+++ b/src/gui/text/qcssparser.cpp
@@ -403,7 +403,7 @@ int ValueExtractor::lengthValue(const Declaration &decl)
     if (decl.d->values.count() < 1)
         return 0;
     LengthData data = lengthValue(decl.d->values.at(0));
-    decl.d->parsed = qVariantFromValue<LengthData>(data);
+    decl.d->parsed = QVariant::fromValue<LengthData>(data);
     return lengthValueFromData(data,f);
 }
 
@@ -435,7 +435,7 @@ void ValueExtractor::lengthValues(const Declaration &decl, int *m)
 
     QList<QVariant> v;
     for (i = 0; i < 4; i++) {
-        v += qVariantFromValue<LengthData>(datas[i]);
+        v += QVariant::fromValue<LengthData>(datas[i]);
         m[i] = lengthValueFromData(datas[i], f);
     }
     decl.d->parsed = v;
@@ -541,7 +541,7 @@ QSize ValueExtractor::sizeValue(const Declaration &decl)
     else
         x[1] = x[0];
     QList<QVariant> v;
-    v << qVariantFromValue<LengthData>(x[0]) << qVariantFromValue<LengthData>(x[1]);
+    v << QVariant::fromValue<LengthData>(x[0]) << qVariantFromValue<LengthData>(x[1]);
     decl.d->parsed = v;
     return QSize(lengthValueFromData(x[0], f), lengthValueFromData(x[1], f));
 }
@@ -916,7 +916,7 @@ void ValueExtractor::borderValue(const Declaration &decl, int *width, QCss::Bord
         data.width = lengthValue(decl.d->values.at(i));
         *width = lengthValueFromData(data.width, f);
         if (++i >= decl.d->values.count()) {
-            decl.d->parsed = qVariantFromValue<BorderData>(data);
+            decl.d->parsed = QVariant::fromValue<BorderData>(data);
             return;
         }
     }
@@ -925,7 +925,7 @@ void ValueExtractor::borderValue(const Declaration &decl, int *width, QCss::Bord
     if (data.style != BorderStyle_Unknown) {
         *style = data.style;
         if (++i >= decl.d->values.count()) {
-            decl.d->parsed = qVariantFromValue<BorderData>(data);
+            decl.d->parsed = QVariant::fromValue<BorderData>(data);
             return;
         }
     } else {
@@ -935,7 +935,7 @@ void ValueExtractor::borderValue(const Declaration &decl, int *width, QCss::Bord
      data.color = parseBrushValue(decl.d->values.at(i), pal);
      *color = brushFromData(data.color, pal);
      if (data.color.type != BrushData::DependsOnThePalette)
-         decl.d->parsed = qVariantFromValue<BorderData>(data);
+         decl.d->parsed = QVariant::fromValue<BorderData>(data);
 }
 
 static void parseShorthandBackgroundProperty(const QVector<Value> &values, BrushData *brush, QString *image, Repeat *repeat, Qt::Alignment *alignment, const QPalette &pal)
@@ -1032,16 +1032,8 @@ bool ValueExtractor::extractBackground(QBrush *brush, QString *image, Repeat *re
                     parseShorthandBackgroundProperty(decl.d->values, &brushData, image, repeat, alignment, pal);
                     *brush = brushFromData(brushData, pal);
                     if (brushData.type != BrushData::DependsOnThePalette) {
-#if defined Q_CC_MSVC && _MSC_VER <= 1300
-                        BackgroundData data;
-                        data.brush = brushData;
-                        data.image = *image;
-                        data.repeat = *repeat;
-                        data.alignment = *alignment;
-#else
                         BackgroundData data = { brushData, *image, *repeat, *alignment };
-#endif
-                        decl.d->parsed = qVariantFromValue<BackgroundData>(data);
+                        decl.d->parsed = QVariant::fromValue<BackgroundData>(data);
                     }
                 }
                 break;
@@ -1319,10 +1311,10 @@ QColor Declaration::colorValue(const QPalette &pal) const
 
     ColorData color = parseColorValue(d->values.at(0));
     if(color.type == ColorData::Role) {
-        d->parsed = qVariantFromValue<int>(color.role);
+        d->parsed = QVariant::fromValue<int>(color.role);
         return pal.color((QPalette::ColorRole)(color.role));
     } else {
-        d->parsed = qVariantFromValue<QColor>(color.color);
+        d->parsed = QVariant::fromValue<QColor>(color.color);
         return color.color;
     }
 }
@@ -1342,11 +1334,11 @@ QBrush Declaration::brushValue(const QPalette &pal) const
     BrushData data = parseBrushValue(d->values.at(0), pal);
 
     if(data.type == BrushData::Role) {
-        d->parsed = qVariantFromValue<int>(data.role);
+        d->parsed = QVariant::fromValue<int>(data.role);
         return pal.color((QPalette::ColorRole)(data.role));
     } else {
         if (data.type != BrushData::DependsOnThePalette)
-            d->parsed = qVariantFromValue<QBrush>(data.brush);
+            d->parsed = QVariant::fromValue<QBrush>(data.brush);
         return data.brush;
     }
 }
@@ -1376,11 +1368,11 @@ void Declaration::brushValues(QBrush *c, const QPalette &pal) const
                 continue;
             BrushData data = parseBrushValue(d->values.at(i), pal);
             if(data.type == BrushData::Role) {
-                v += qVariantFromValue<int>(data.role);
+                v += QVariant::fromValue<int>(data.role);
                 c[i] = pal.color((QPalette::ColorRole)(data.role));
             } else {
                 if (data.type != BrushData::DependsOnThePalette) {
-                    v += qVariantFromValue<QBrush>(data.brush);
+                    v += QVariant::fromValue<QBrush>(data.brush);
                 } else {
                     v += QVariant();
                 }
@@ -1453,7 +1445,7 @@ QSize Declaration::sizeValue() const
     else
         x[1] = x[0];
     QSize size(x[0], x[1]);
-    d->parsed = qVariantFromValue<QSize>(size);
+    d->parsed = QVariant::fromValue<QSize>(size);
     return size;
 }
 
@@ -1475,7 +1467,7 @@ QRect Declaration::rectValue() const
     if (args.count() != 4)
         return QRect();
     QRect rect(args[0].toInt(), args[1].toInt(), args[2].toInt(), args[3].toInt());
-    d->parsed = qVariantFromValue<QRect>(rect);
+    d->parsed = QVariant::fromValue<QRect>(rect);
     return rect;
 }
 
@@ -1496,10 +1488,10 @@ void Declaration::colorValues(QColor *c, const QPalette &pal) const
         for (i = 0; i < qMin(d->values.count(), 4); i++) {
             ColorData color = parseColorValue(d->values.at(i));
             if(color.type == ColorData::Role) {
-                v += qVariantFromValue<int>(color.role);
+                v += QVariant::fromValue<int>(color.role);
                 c[i] = pal.color((QPalette::ColorRole)(color.role));
             } else {
-                v += qVariantFromValue<QColor>(color.color);
+                v += QVariant::fromValue<QColor>(color.color);
                 c[i] = color.color;
             }
         }
@@ -1691,7 +1683,7 @@ QIcon Declaration::iconValue() const
             i++;
     }
 
-    d->parsed = qVariantFromValue<QIcon>(icon);
+    d->parsed = QVariant::fromValue<QIcon>(icon);
     return icon;
 }
 
diff --git a/src/gui/text/qfontdatabase.cpp b/src/gui/text/qfontdatabase.cpp
index 7ece6ea..daa9c1c 100644
--- a/src/gui/text/qfontdatabase.cpp
+++ b/src/gui/text/qfontdatabase.cpp
@@ -75,10 +75,6 @@
 #  define FM_DEBUG if (false) qDebug
 #endif
 
-#if defined(Q_CC_MSVC) && !defined(Q_CC_MSVC_NET)
-#  define for if(0){}else for
-#endif
-
 QT_BEGIN_NAMESPACE
 
 #define SMOOTH_SCALABLE 0xffff
diff --git a/src/gui/text/qfontengine_mac.mm b/src/gui/text/qfontengine_mac.mm
index f6b8758..f898fb8 100644
--- a/src/gui/text/qfontengine_mac.mm
+++ b/src/gui/text/qfontengine_mac.mm
@@ -349,11 +349,32 @@ bool QCoreTextFontEngineMulti::stringToCMap(const QChar *str, int len, QGlyphLay
                                             int *nglyphs, QTextEngine::ShaperFlags flags) const
 {
     *nglyphs = len;
+    QCFType<CFStringRef> cfstring;
+
     QVarLengthArray<CGGlyph> cgGlyphs(len);
     CTFontGetGlyphsForCharacters(ctfont, (const UniChar*)str, cgGlyphs.data(), len);
 
-    for (int i = 0; i < len; ++i)
-        glyphs->glyphs[i] = cgGlyphs[i];
+    for (int i = 0; i < len; ++i) {
+        if (cgGlyphs[i]) {
+            glyphs->glyphs[i] = cgGlyphs[i];
+	} else {
+            if (!cfstring)
+                cfstring = CFStringCreateWithCharactersNoCopy(0, reinterpret_cast<const UniChar *>(str), len, kCFAllocatorNull);
+            QCFType<CTFontRef> substituteFont = CTFontCreateForString(ctfont, cfstring, CFRangeMake(i, 1));
+            CGGlyph substituteGlyph = 0;
+            CTFontGetGlyphsForCharacters(substituteFont, (const UniChar*)str + i, &substituteGlyph, 1);
+            if (substituteGlyph) {
+                const uint fontIndex = (fontIndexForFont(substituteFont) << 24);
+                glyphs->glyphs[i] = substituteGlyph | fontIndex;
+                if (!(flags & QTextEngine::GlyphIndicesOnly)) {
+                    CGSize advance;
+                    CTFontGetAdvancesForGlyphs(substituteFont, kCTFontHorizontalOrientation, &substituteGlyph, &advance, 1);
+                    glyphs->advances_x[i] = QFixed::fromReal(advance.width);
+                    glyphs->advances_y[i] = QFixed::fromReal(advance.height);
+                }
+            }
+        }
+    }
 
     if (flags & QTextEngine::GlyphIndicesOnly)
         return true;
@@ -362,9 +383,14 @@ bool QCoreTextFontEngineMulti::stringToCMap(const QChar *str, int len, QGlyphLay
     CTFontGetAdvancesForGlyphs(ctfont, kCTFontHorizontalOrientation, cgGlyphs.data(), advances.data(), len);
 
     for (int i = 0; i < len; ++i) {
+        if (glyphs->glyphs[i] & 0xff000000)
+            continue;
         glyphs->advances_x[i] = QFixed::fromReal(advances[i].width);
         glyphs->advances_y[i] = QFixed::fromReal(advances[i].height);
-        if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+    }
+
+    if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+        for (int i = 0; i < len; ++i) {
             glyphs->advances_x[i] = glyphs->advances_x[i].round();
             glyphs->advances_y[i] = glyphs->advances_y[i].round();
         }
diff --git a/src/gui/text/qfontmetrics.cpp b/src/gui/text/qfontmetrics.cpp
index d02e841..f2591ce 100644
--- a/src/gui/text/qfontmetrics.cpp
+++ b/src/gui/text/qfontmetrics.cpp
@@ -443,6 +443,21 @@ bool QFontMetrics::inFont(QChar ch) const
 }
 
 /*!
+   Returns true if the character encoded in UCS-4/UTF-32 is a valid
+   character in the font; otherwise returns false.
+*/
+bool QFontMetrics::inFontUcs4(uint ucs4) const
+{
+    const int script = QUnicodeTables::script(ucs4);
+    QFontEngine *engine = d->engineForScript(script);
+    Q_ASSERT(engine != 0);
+    if (engine->type() == QFontEngine::Box)
+        return false;
+    QString utf16 = QString::fromUcs4(&ucs4, 1);
+    return engine->canRender(utf16.data(), utf16.length());
+}
+
+/*!
     Returns the left bearing of character \a ch in the font.
 
     The left bearing is the right-ward distance of the left-most pixel
@@ -1315,6 +1330,21 @@ bool QFontMetricsF::inFont(QChar ch) const
 }
 
 /*!
+   Returns true if the character encoded in UCS-4/UTF-32 is a valid
+   character in the font; otherwise returns false.
+*/
+bool QFontMetricsF::inFontUcs4(uint ucs4) const
+{
+    const int script = QUnicodeTables::script(ucs4);
+    QFontEngine *engine = d->engineForScript(script);
+    Q_ASSERT(engine != 0);
+    if (engine->type() == QFontEngine::Box)
+        return false;
+    QString utf16 = QString::fromUcs4(&ucs4, 1);
+    return engine->canRender(utf16.data(), utf16.length());
+}
+
+/*!
     Returns the left bearing of character \a ch in the font.
 
     The left bearing is the right-ward distance of the left-most pixel
@@ -1779,7 +1809,7 @@ qreal QFontMetricsF::lineWidth() const
 
     Use the boundingRect() function in combination with
     QString::left() instead.
-     
+
     \oldcode
         QRect rect = boundingRect(text, len);
     \newcode
diff --git a/src/gui/text/qfontmetrics.h b/src/gui/text/qfontmetrics.h
index 2518b54..9911ad2 100644
--- a/src/gui/text/qfontmetrics.h
+++ b/src/gui/text/qfontmetrics.h
@@ -85,6 +85,7 @@ public:
     int averageCharWidth() const;
 
     bool inFont(QChar) const;
+    bool inFontUcs4(uint ucs4) const;
 
     int leftBearing(QChar) const;
     int rightBearing(QChar) const;
@@ -162,6 +163,7 @@ public:
     qreal averageCharWidth() const;
 
     bool inFont(QChar) const;
+    bool inFontUcs4(uint ucs4) const;
 
     qreal leftBearing(QChar) const;
     qreal rightBearing(QChar) const;
diff --git a/src/gui/text/qstatictext.cpp b/src/gui/text/qstatictext.cpp
index 7396bcd..21c2e02 100644
--- a/src/gui/text/qstatictext.cpp
+++ b/src/gui/text/qstatictext.cpp
@@ -109,10 +109,18 @@ QT_BEGIN_NAMESPACE
     QPainter::drawStaticText() and can change from call to call with a minimal impact on
     performance.
 
-    QStaticText will attempt to guess the format of the input text using Qt::mightBeRichText().
-    To force QStaticText to display its contents as either plain text or rich text, use the
-    function QStaticText::setTextFormat() and pass in, respectively, Qt::PlainText and
-    Qt::RichText.
+    For extra convenience, it is possible to apply formatting to the text using the HTML subset
+    supported by QTextDocument. QStaticText will attempt to guess the format of the input text using
+    Qt::mightBeRichText(), and interpret it as rich text if this function returns true. To force
+    QStaticText to display its contents as either plain text or rich text, use the function
+    QStaticText::setTextFormat() and pass in, respectively, Qt::PlainText and Qt::RichText.
+
+    QStaticText can only represent text, so only HTML tags which alter the layout or appearance of
+    the text will be respected. Adding an image to the input HTML, for instance, will cause the
+    image to be included as part of the layout, affecting the positions of the text glyphs, but it
+    will not be displayed. The result will be an empty area the size of the image in the output.
+    Similarly, using tables will cause the text to be laid out in table format, but the borders
+    will not be drawn.
 
     If it's the first time the static text is drawn, or if the static text, or the painter's font
     has been altered since the last time it was drawn, the text's layout has to be
diff --git a/src/gui/text/qtextcontrol.cpp b/src/gui/text/qtextcontrol.cpp
index 3d34687..32b1df9 100644
--- a/src/gui/text/qtextcontrol.cpp
+++ b/src/gui/text/qtextcontrol.cpp
@@ -2908,7 +2908,7 @@ QAbstractTextDocumentLayout::PaintContext QTextControl::getPaintContext(QWidget
             if (widget)
                 style = widget->style();
             style->styleHint(QStyle::SH_TextControl_FocusIndicatorTextCharFormat, &opt, widget, &ret);
-            selection.format = qVariantValue<QTextFormat>(ret.variant).toCharFormat();
+            selection.format = qvariant_cast<QTextFormat>(ret.variant).toCharFormat();
         } else {
             QPalette::ColorGroup cg = d->hasFocus ? QPalette::Active : QPalette::Inactive;
             selection.format.setBackground(ctx.palette.brush(cg, QPalette::Highlight));
diff --git a/src/gui/text/qtextengine.cpp b/src/gui/text/qtextengine.cpp
index e365c8d..4135831 100644
--- a/src/gui/text/qtextengine.cpp
+++ b/src/gui/text/qtextengine.cpp
@@ -923,6 +923,13 @@ void QTextEngine::shapeText(int item) const
         si.width += glyphs.advances_x[i];
 }
 
+static inline bool hasCaseChange(const QScriptItem &si)
+{
+    return si.analysis.flags == QScriptAnalysis::SmallCaps ||
+           si.analysis.flags == QScriptAnalysis::Uppercase ||
+           si.analysis.flags == QScriptAnalysis::Lowercase;
+}
+
 #if defined(Q_WS_WINCE) //TODO
 // set the glyph attributes heuristically. Assumes a 1 to 1 relationship between chars and glyphs
 // and no reordering.
@@ -1050,14 +1057,15 @@ void QTextEngine::shapeTextWithCE(int item) const
     if (option.useDesignMetrics())
 	flags |= DesignMetrics;
 
-    attributes(); // pre-initialize char attributes
+    // pre-initialize char attributes
+    if (! attributes())
+        return;
 
     const int len = length(item);
     int num_glyphs = length(item);
     const QChar *str = layoutData->string.unicode() + si.position;
     ushort upperCased[256];
-    if (si.analysis.flags == QScriptAnalysis::SmallCaps || si.analysis.flags == QScriptAnalysis::Uppercase
-            || si.analysis.flags == QScriptAnalysis::Lowercase) {
+    if (hasCaseChange(si)) {
         ushort *uc = upperCased;
         if (len > 256)
             uc = new ushort[len];
@@ -1071,7 +1079,14 @@ void QTextEngine::shapeTextWithCE(int item) const
     }
 
     while (true) {
-        ensureSpace(num_glyphs);
+        if (! ensureSpace(num_glyphs)) {
+            // If str is converted to uppercase/lowercase form with a new buffer,
+            // we need to delete that buffer before return for error
+            const ushort *uc = reinterpret_cast<const ushort *>(str);
+            if (hasCaseChange(si) && uc != upperCased)
+                delete [] uc;
+            return;
+        }
         num_glyphs = layoutData->glyphLayout.numGlyphs - layoutData->used;
 
         QGlyphLayout g = availableGlyphs(&si);
@@ -1092,9 +1107,7 @@ void QTextEngine::shapeTextWithCE(int item) const
     layoutData->used += si.num_glyphs;
 
     const ushort *uc = reinterpret_cast<const ushort *>(str);
-    if ((si.analysis.flags == QScriptAnalysis::SmallCaps || si.analysis.flags == QScriptAnalysis::Uppercase
-         || si.analysis.flags == QScriptAnalysis::Lowercase)
-        && uc != upperCased)
+    if (hasCaseChange(si) && uc != upperCased)
         delete [] uc;
 }
 #endif
@@ -1133,8 +1146,7 @@ void QTextEngine::shapeTextWithHarfbuzz(int item) const
     entire_shaper_item.item.bidiLevel = si.analysis.bidiLevel;
 
     HB_UChar16 upperCased[256]; // XXX what about making this 4096, so we don't have to extend it ever.
-    if (si.analysis.flags == QScriptAnalysis::SmallCaps || si.analysis.flags == QScriptAnalysis::Uppercase
-            || si.analysis.flags == QScriptAnalysis::Lowercase) {
+    if (hasCaseChange(si)) {
         HB_UChar16 *uc = upperCased;
         if (entire_shaper_item.item.length > 256)
             uc = new HB_UChar16[entire_shaper_item.item.length];
@@ -1156,17 +1168,24 @@ void QTextEngine::shapeTextWithHarfbuzz(int item) const
         entire_shaper_item.shaperFlags |= HB_ShaperFlag_UseDesignMetrics;
 
     entire_shaper_item.num_glyphs = qMax(layoutData->glyphLayout.numGlyphs - layoutData->used, int(entire_shaper_item.item.length));
-    ensureSpace(entire_shaper_item.num_glyphs);
+    if (! ensureSpace(entire_shaper_item.num_glyphs)) {
+        if (hasCaseChange(si))
+            delete [] const_cast<HB_UChar16 *>(entire_shaper_item.string);
+        return;
+    }
     QGlyphLayout initialGlyphs = availableGlyphs(&si).mid(0, entire_shaper_item.num_glyphs);
 
     if (!stringToGlyphs(&entire_shaper_item, &initialGlyphs, font)) {
-        ensureSpace(entire_shaper_item.num_glyphs);
+        if (! ensureSpace(entire_shaper_item.num_glyphs)) {
+            if (hasCaseChange(si))
+                delete [] const_cast<HB_UChar16 *>(entire_shaper_item.string);
+            return;
+        }
         initialGlyphs = availableGlyphs(&si).mid(0, entire_shaper_item.num_glyphs);
 
         if (!stringToGlyphs(&entire_shaper_item, &initialGlyphs, font)) {
             // ############ if this happens there's a bug in the fontengine
-            if ((si.analysis.flags == QScriptAnalysis::SmallCaps || si.analysis.flags == QScriptAnalysis::Uppercase
-                    || si.analysis.flags == QScriptAnalysis::Lowercase) && entire_shaper_item.string != upperCased)
+            if (hasCaseChange(si) && entire_shaper_item.string != upperCased)
                 delete [] const_cast<HB_UChar16 *>(entire_shaper_item.string);
             return;
         }
@@ -1231,7 +1250,11 @@ void QTextEngine::shapeTextWithHarfbuzz(int item) const
         remaining_glyphs -= shaper_item.initialGlyphCount;
 
         do {
-            ensureSpace(glyph_pos + shaper_item.num_glyphs + remaining_glyphs);
+            if (! ensureSpace(glyph_pos + shaper_item.num_glyphs + remaining_glyphs)) {
+                if (hasCaseChange(si))
+                    delete [] const_cast<HB_UChar16 *>(entire_shaper_item.string);
+                return;
+            }
 
             const QGlyphLayout g = availableGlyphs(&si).mid(glyph_pos);
             moveGlyphData(g.mid(shaper_item.num_glyphs), g.mid(shaper_item.initialGlyphCount), remaining_glyphs);
@@ -1271,8 +1294,7 @@ void QTextEngine::shapeTextWithHarfbuzz(int item) const
 
     layoutData->used += si.num_glyphs;
 
-    if ((si.analysis.flags == QScriptAnalysis::SmallCaps || si.analysis.flags == QScriptAnalysis::Uppercase)
-        && entire_shaper_item.string != upperCased)
+    if (hasCaseChange(si) && entire_shaper_item.string != upperCased)
         delete [] const_cast<HB_UChar16 *>(entire_shaper_item.string);
 }
 
@@ -1317,7 +1339,8 @@ const HB_CharAttributes *QTextEngine::attributes() const
         return (HB_CharAttributes *) layoutData->memory;
 
     itemize();
-    ensureSpace(layoutData->string.length());
+    if (! ensureSpace(layoutData->string.length()))
+        return NULL;
 
     QVarLengthArray<HB_ScriptItem> hbScriptItems(layoutData->items.size());
 
@@ -1896,7 +1919,10 @@ void QTextEngine::justify(const QScriptLine &line)
 
     // don't include trailing white spaces when doing justification
     int line_length = line.length;
-    const HB_CharAttributes *a = attributes()+line.from;
+    const HB_CharAttributes *a = attributes();
+    if (! a)
+        return;
+    a += line.from;
     while (line_length && a[line_length-1].whiteSpace)
         --line_length;
     // subtract one char more, as we can't justfy after the last character
@@ -2077,7 +2103,7 @@ QTextEngine::LayoutData::LayoutData()
     memory_on_stack = false;
     used = 0;
     hasBidi = false;
-    inLayout = false;
+    layoutState = LayoutEmpty;
     haveCharAttributes = false;
     logClustersPtr = 0;
     available_glyphs = 0;
@@ -2111,7 +2137,7 @@ QTextEngine::LayoutData::LayoutData(const QString &str, void **stack_memory, int
     }
     used = 0;
     hasBidi = false;
-    inLayout = false;
+    layoutState = LayoutEmpty;
     haveCharAttributes = false;
 }
 
@@ -2122,12 +2148,12 @@ QTextEngine::LayoutData::~LayoutData()
     memory = 0;
 }
 
-void QTextEngine::LayoutData::reallocate(int totalGlyphs)
+bool QTextEngine::LayoutData::reallocate(int totalGlyphs)
 {
     Q_ASSERT(totalGlyphs >= glyphLayout.numGlyphs);
     if (memory_on_stack && available_glyphs >= totalGlyphs) {
         glyphLayout.grow(glyphLayout.data(), totalGlyphs);
-        return;
+        return true;
     }
 
     int space_charAttributes = sizeof(HB_CharAttributes)*string.length()/sizeof(void*) + 1;
@@ -2135,7 +2161,14 @@ void QTextEngine::LayoutData::reallocate(int totalGlyphs)
     int space_glyphs = QGlyphLayout::spaceNeededForGlyphLayout(totalGlyphs)/sizeof(void*) + 2;
 
     int newAllocated = space_charAttributes + space_glyphs + space_logClusters;
-    Q_ASSERT(newAllocated >= allocated);
+    // These values can be negative if the length of string/glyphs causes overflow,
+    // we can't layout such a long string all at once, so return false here to
+    // indicate there is a failure
+    if (space_charAttributes < 0 || space_logClusters < 0 || space_glyphs < 0 || newAllocated < allocated) {
+        layoutState = LayoutFailed;
+        return false;
+    }
+
     void **newMem = memory;
     newMem = (void **)::realloc(memory_on_stack ? 0 : memory, newAllocated*sizeof(void *));
     Q_CHECK_PTR(newMem);
@@ -2156,6 +2189,7 @@ void QTextEngine::LayoutData::reallocate(int totalGlyphs)
     glyphLayout.grow(reinterpret_cast<char *>(m), totalGlyphs);
 
     allocated = newAllocated;
+    return true;
 }
 
 // grow to the new size, copying the existing data to the new layout
@@ -2187,7 +2221,7 @@ void QTextEngine::freeMemory()
     } else {
         layoutData->used = 0;
         layoutData->hasBidi = false;
-        layoutData->inLayout = false;
+        layoutData->layoutState = LayoutEmpty;
         layoutData->haveCharAttributes = false;
     }
     for (int i = 0; i < lines.size(); ++i) {
@@ -2341,6 +2375,8 @@ QString QTextEngine::elidedText(Qt::TextElideMode mode, const QFixed &width, int
     if (flags & Qt::TextShowMnemonic) {
         itemize();
         HB_CharAttributes *attributes = const_cast<HB_CharAttributes *>(this->attributes());
+        if (!attributes)
+            return QString();
         for (int i = 0; i < layoutData->items.size(); ++i) {
             QScriptItem &si = layoutData->items[i];
             if (!si.num_glyphs)
@@ -2417,6 +2453,8 @@ QString QTextEngine::elidedText(Qt::TextElideMode mode, const QFixed &width, int
         return QString();
 
     const HB_CharAttributes *attributes = this->attributes();
+    if (!attributes)
+        return QString();
 
     if (mode == Qt::ElideRight) {
         QFixed currentWidth;
diff --git a/src/gui/text/qtextengine_p.h b/src/gui/text/qtextengine_p.h
index 805d242..b5faf20 100644
--- a/src/gui/text/qtextengine_p.h
+++ b/src/gui/text/qtextengine_p.h
@@ -416,6 +416,11 @@ class QTextFormatCollection;
 
 class Q_GUI_EXPORT QTextEngine {
 public:
+    enum LayoutState {
+        LayoutEmpty,
+        InLayout,
+        LayoutFailed,
+    };
     struct LayoutData {
         LayoutData(const QString &str, void **stack_memory, int mem_size);
         LayoutData();
@@ -428,11 +433,11 @@ public:
         QGlyphLayout glyphLayout;
         mutable int used;
         uint hasBidi : 1;
-        uint inLayout : 1;
+        uint layoutState : 2;
         uint memory_on_stack : 1;
         uint haveCharAttributes : 1;
         QString string;
-        void reallocate(int totalGlyphs);
+        bool reallocate(int totalGlyphs);
     };
 
     QTextEngine(LayoutData *data);
@@ -520,9 +525,10 @@ public:
         return layoutData->glyphLayout.mid(si->glyph_data_offset, si->num_glyphs);
     }
 
-    inline void ensureSpace(int nGlyphs) const {
+    inline bool ensureSpace(int nGlyphs) const {
         if (layoutData->glyphLayout.numGlyphs - layoutData->used < nGlyphs)
-            layoutData->reallocate((((layoutData->used + nGlyphs)*3/2 + 15) >> 4) << 4);
+            return layoutData->reallocate((((layoutData->used + nGlyphs)*3/2 + 15) >> 4) << 4);
+        return true;
     }
 
     void freeMemory();
diff --git a/src/gui/text/qtextformat.cpp b/src/gui/text/qtextformat.cpp
index 46db253..e0a4096 100644
--- a/src/gui/text/qtextformat.cpp
+++ b/src/gui/text/qtextformat.cpp
@@ -925,7 +925,7 @@ qreal QTextFormat::doubleProperty(int propertyId) const
     const QVariant prop = d->property(propertyId);
     if (prop.userType() != QVariant::Double && prop.userType() != QMetaType::Float)
         return 0.;
-    return qVariantValue<qreal>(prop);
+    return qvariant_cast<qreal>(prop);
 }
 
 /*!
@@ -1895,7 +1895,7 @@ void QTextBlockFormat::setTabPositions(const QList<QTextOption::Tab> &tabs)
     QList<QTextOption::Tab>::ConstIterator iter = tabs.constBegin();
     while (iter != tabs.constEnd()) {
         QVariant v;
-        qVariantSetValue<QTextOption::Tab>(v, *iter);
+        v.setValue<QTextOption::Tab>(*iter);
         list.append(v);
         ++iter;
     }
@@ -1917,7 +1917,7 @@ QList<QTextOption::Tab> QTextBlockFormat::tabPositions() const
     QList<QVariant> variantsList = qvariant_cast<QList<QVariant> >(variant);
     QList<QVariant>::Iterator iter = variantsList.begin();
     while(iter != variantsList.end()) {
-        answer.append( qVariantValue<QTextOption::Tab>(*iter));
+        answer.append( qvariant_cast<QTextOption::Tab>(*iter));
         ++iter;
     }
     return answer;
diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
index 531e46b..3f83aee 100644
--- a/src/gui/text/qtextlayout.cpp
+++ b/src/gui/text/qtextlayout.cpp
@@ -76,6 +76,8 @@ static inline QFixed leadingSpaceWidth(QTextEngine *eng, const QScriptLine &line
 
     int pos = line.length;
     const HB_CharAttributes *attributes = eng->attributes();
+    if (!attributes)
+        return QFixed();
     while (pos > 0 && attributes[line.from + pos - 1].whiteSpace)
         --pos;
     return eng->width(line.from + pos, line.length - pos);
@@ -612,7 +614,7 @@ bool QTextLayout::cacheEnabled() const
 void QTextLayout::beginLayout()
 {
 #ifndef QT_NO_DEBUG
-    if (d->layoutData && d->layoutData->inLayout) {
+    if (d->layoutData && d->layoutData->layoutState == QTextEngine::InLayout) {
         qWarning("QTextLayout::beginLayout: Called while already doing layout");
         return;
     }
@@ -620,7 +622,7 @@ void QTextLayout::beginLayout()
     d->invalidate();
     d->clearLineData();
     d->itemize();
-    d->layoutData->inLayout = true;
+    d->layoutData->layoutState = QTextEngine::InLayout;
 }
 
 /*!
@@ -631,7 +633,7 @@ void QTextLayout::beginLayout()
 void QTextLayout::endLayout()
 {
 #ifndef QT_NO_DEBUG
-    if (!d->layoutData || !d->layoutData->inLayout) {
+    if (!d->layoutData || d->layoutData->layoutState == QTextEngine::LayoutEmpty) {
         qWarning("QTextLayout::endLayout: Called without beginLayout()");
         return;
     }
@@ -640,7 +642,7 @@ void QTextLayout::endLayout()
     if (l && d->lines.at(l-1).length < 0) {
         QTextLine(l-1, d).setNumColumns(INT_MAX);
     }
-    d->layoutData->inLayout = false;
+    d->layoutData->layoutState = QTextEngine::LayoutEmpty;
     if (!d->cacheGlyphs)
         d->freeMemory();
 }
@@ -768,11 +770,14 @@ bool QTextLayout::isValidCursorPosition(int pos) const
 QTextLine QTextLayout::createLine()
 {
 #ifndef QT_NO_DEBUG
-    if (!d->layoutData || !d->layoutData->inLayout) {
+    if (!d->layoutData || d->layoutData->layoutState == QTextEngine::LayoutEmpty) {
         qWarning("QTextLayout::createLine: Called without layouting");
         return QTextLine();
     }
 #endif
+    if (d->layoutData->layoutState == QTextEngine::LayoutFailed)
+        return QTextLine();
+
     int l = d->lines.size();
     if (l && d->lines.at(l-1).length < 0) {
         QTextLine(l-1, d).setNumColumns(INT_MAX);
@@ -1035,6 +1040,35 @@ QScriptItem &QTextLineItemIterator::next()
     return *si;
 }
 
+static QFixed offsetInLigature(const unsigned short *logClusters,
+                               const QGlyphLayout &glyphs,
+                               int pos, int max, int glyph_pos)
+{
+    int offsetInCluster = 0;
+    for (int i = pos - 1; i >= 0; i--) {
+        if (logClusters[i] == glyph_pos)
+            offsetInCluster++;
+        else
+            break;
+    }
+
+    // in the case that the offset is inside a (multi-character) glyph,
+    // interpolate the position.
+    if (offsetInCluster > 0) {
+        int clusterLength = 0;
+        for (int i = pos - offsetInCluster; i < max; i++) {
+            if (logClusters[i] == glyph_pos)
+                clusterLength++;
+            else
+                break;
+        }
+        if (clusterLength)
+            return glyphs.advances_x[glyph_pos] * offsetInCluster / clusterLength;
+    }
+
+    return 0;
+}
+
 bool QTextLineItemIterator::getSelectionBounds(QFixed *selectionX, QFixed *selectionWidth) const
 {
     *selectionX = *selectionWidth = 0;
@@ -1074,8 +1108,19 @@ bool QTextLineItemIterator::getSelectionBounds(QFixed *selectionX, QFixed *selec
                 swidth += glyphs.effectiveAdvance(g);
         }
 
-        *selectionX = x + soff;
-        *selectionWidth = swidth;
+        // If the starting character is in the middle of a ligature,
+        // selection should only contain the right part of that ligature
+        // glyph, so we need to get the width of the left part here and
+        // add it to *selectionX
+        QFixed leftOffsetInLigature = offsetInLigature(logClusters, glyphs, from,
+                                                       to, start_glyph);
+        *selectionX = x + soff + leftOffsetInLigature;
+        *selectionWidth = swidth - leftOffsetInLigature;
+        // If the ending character is also part of a ligature, swidth does
+        // not contain that part yet, we also need to find out the width of
+        // that left part
+        *selectionWidth += offsetInLigature(logClusters, glyphs, to,
+                                            eng->length(item), end_glyph);
     }
     return true;
 }
@@ -1736,14 +1781,18 @@ namespace {
             return glyphs.glyphs[logClusters[currentPosition - 1]];
         }
 
+        inline void adjustRightBearing(glyph_t glyph)
+        {
+            qreal rb;
+            fontEngine->getGlyphBearings(glyph, 0, &rb);
+            rightBearing = qMin(QFixed(), QFixed::fromReal(rb));
+        }
+
         inline void adjustRightBearing()
         {
             if (currentPosition <= 0)
                 return;
-
-            qreal rb;
-            fontEngine->getGlyphBearings(currentGlyph(), 0, &rb);
-            rightBearing = qMin(QFixed(), QFixed::fromReal(rb));
+            adjustRightBearing(currentGlyph());
         }
 
         inline void resetRightBearing()
@@ -1844,6 +1893,8 @@ void QTextLine::layout_helper(int maxGlyphs)
     Qt::Alignment alignment = eng->option.alignment();
 
     const HB_CharAttributes *attributes = eng->attributes();
+    if (!attributes)
+        return;
     lbh.currentPosition = line.from;
     int end = 0;
     lbh.logClusters = eng->layoutData->logClustersPtr;
@@ -1857,6 +1908,8 @@ void QTextLine::layout_helper(int maxGlyphs)
             if (!current.num_glyphs) {
                 eng->shape(item);
                 attributes = eng->attributes();
+                if (!attributes)
+                    return;
                 lbh.logClusters = eng->layoutData->logClustersPtr;
             }
             lbh.currentPosition = qMax(line.from, current.position);
@@ -1935,6 +1988,9 @@ void QTextLine::layout_helper(int maxGlyphs)
         } else {
             lbh.whiteSpaceOrObject = false;
             bool sb_or_ws = false;
+            glyph_t previousGlyph = 0;
+            if (lbh.currentPosition > 0 && lbh.logClusters[lbh.currentPosition - 1] <lbh.glyphs.numGlyphs)
+                previousGlyph = lbh.currentGlyph(); // needed to calculate right bearing later
             do {
                 addNextCluster(lbh.currentPosition, end, lbh.tmpData, lbh.glyphCount,
                                current, lbh.logClusters, lbh.glyphs);
@@ -1978,9 +2034,17 @@ void QTextLine::layout_helper(int maxGlyphs)
             // We ignore the right bearing if the minimum negative bearing is too little to
             // expand the text beyond the edge.
             if (sb_or_ws|breakany) {
+                QFixed rightBearing = lbh.rightBearing; // store previous right bearing
+#if !defined(Q_WS_MAC)
                 if (lbh.calculateNewWidth(line) - lbh.minimumRightBearing > line.width)
+#endif
                     lbh.adjustRightBearing();
                 if (lbh.checkFullOtherwiseExtend(line)) {
+                    // we are too wide, fix right bearing
+                    if (rightBearing <= 0)
+                        lbh.rightBearing = rightBearing; // take from cache
+                    else if (previousGlyph > 0)
+                        lbh.adjustRightBearing(previousGlyph);
                     if (!breakany) {
                         line.textWidth += lbh.softHyphenWidth;
                     }
@@ -2633,14 +2697,6 @@ qreal QTextLine::cursorToX(int *cursorPos, Edge edge) const
         if(pos == l)
             x += si->width;
     } else {
-        int offsetInCluster = 0;
-        for (int i=pos-1; i >= 0; i--) {
-            if (logClusters[i] == glyph_pos)
-                offsetInCluster++;
-            else
-                break;
-        }
-
         if (reverse) {
             int end = qMin(lineEnd, si->position + l) - si->position;
             int glyph_end = end == l ? si->num_glyphs : logClusters[end];
@@ -2652,17 +2708,7 @@ qreal QTextLine::cursorToX(int *cursorPos, Edge edge) const
             for (int i = glyph_start; i < glyph_pos; i++)
                 x += glyphs.effectiveAdvance(i);
         }
-        if (offsetInCluster > 0) { // in the case that the offset is inside a (multi-character) glyph, interpolate the position.
-            int clusterLength = 0;
-            for (int i=pos - offsetInCluster; i < line.length; i++) {
-                if (logClusters[i] == glyph_pos)
-                    clusterLength++;
-                else
-                    break;
-            }
-            if (clusterLength)
-                x+= glyphs.advances_x[glyph_pos] * offsetInCluster / clusterLength;
-        }
+        x += offsetInLigature(logClusters, glyphs, pos, line.length, glyph_pos);
     }
 
     *cursorPos = pos + si->position;
diff --git a/src/gui/widgets/qabstractbutton.cpp b/src/gui/widgets/qabstractbutton.cpp
index 995d659..bd66843 100644
--- a/src/gui/widgets/qabstractbutton.cpp
+++ b/src/gui/widgets/qabstractbutton.cpp
@@ -319,7 +319,7 @@ QList<QAbstractButton *>QAbstractButtonPrivate::queryButtonList() const
         return group->d_func()->buttonList;
 #endif
 
-    QList<QAbstractButton*>candidates = qFindChildren<QAbstractButton *>(parent);
+    QList<QAbstractButton*>candidates = parent->findChildren<QAbstractButton *>();
     if (autoExclusive) {
         for (int i = candidates.count() - 1; i >= 0; --i) {
             QAbstractButton *candidate = candidates.at(i);
diff --git a/src/gui/widgets/qcombobox.cpp b/src/gui/widgets/qcombobox.cpp
index 88b3467..487d244 100644
--- a/src/gui/widgets/qcombobox.cpp
+++ b/src/gui/widgets/qcombobox.cpp
@@ -116,7 +116,7 @@ QStyleOptionMenuItem QComboMenuDelegate::getStyleOption(const QStyleOptionViewIt
 
     QPalette resolvedpalette = option.palette.resolve(QApplication::palette("QMenu"));
     QVariant value = index.data(Qt::ForegroundRole);
-    if (qVariantCanConvert<QBrush>(value)) {
+    if (value.canConvert<QBrush>()) {
         resolvedpalette.setBrush(QPalette::WindowText, qvariant_cast<QBrush>(value));
         resolvedpalette.setBrush(QPalette::ButtonText, qvariant_cast<QBrush>(value));
         resolvedpalette.setBrush(QPalette::Text, qvariant_cast<QBrush>(value));
@@ -152,7 +152,7 @@ QStyleOptionMenuItem QComboMenuDelegate::getStyleOption(const QStyleOptionViewIt
         menuOption.icon = qvariant_cast<QPixmap>(variant);
         break;
     }
-    if (qVariantCanConvert<QBrush>(index.data(Qt::BackgroundRole))) {
+    if (index.data(Qt::BackgroundRole).canConvert<QBrush>()) {
         menuOption.palette.setBrush(QPalette::All, QPalette::Background,
                                     qvariant_cast<QBrush>(index.data(Qt::BackgroundRole)));
     }
@@ -911,7 +911,7 @@ QComboBox::QComboBox(bool rw, QWidget *parent, const char *name)
     interaction. The highlighted() signal is emitted when the user
     highlights an item in the combobox popup list. All three signals
     exist in two versions, one with a QString argument and one with an
-    \c int argument. If the user selectes or highlights a pixmap, only
+    \c int argument. If the user selects or highlights a pixmap, only
     the \c int signals are emitted. Whenever the text of an editable
     combobox is changed the editTextChanged() signal is emitted.
 
diff --git a/src/gui/widgets/qcommandlinkbutton.cpp b/src/gui/widgets/qcommandlinkbutton.cpp
index d3b5869..a6f5f7d 100644
--- a/src/gui/widgets/qcommandlinkbutton.cpp
+++ b/src/gui/widgets/qcommandlinkbutton.cpp
@@ -349,7 +349,7 @@ void QCommandLinkButton::paintEvent(QPaintEvent *)
     QStyleOptionButton option;
     initStyleOption(&option);
 
-    //Enable command link appearence on Vista
+    //Enable command link appearance on Vista
     option.features |= QStyleOptionButton::CommandLinkButton;
     option.text = QString();
     option.icon = QIcon(); //we draw this ourselves
diff --git a/src/gui/widgets/qdatetimeedit.cpp b/src/gui/widgets/qdatetimeedit.cpp
index e272ce4..3bc6412 100644
--- a/src/gui/widgets/qdatetimeedit.cpp
+++ b/src/gui/widgets/qdatetimeedit.cpp
@@ -754,6 +754,7 @@ QCalendarWidget *QDateTimeEdit::calendarWidget() const
   Sets the given \a calendarWidget as the widget to be used for the calendar
   pop-up. The editor does not automatically take ownership of the calendar widget.
 
+  \note calendarPopup must be set to true before setting the calendar widget.
   \sa calendarPopup
 */
 void QDateTimeEdit::setCalendarWidget(QCalendarWidget *calendarWidget)
diff --git a/src/gui/widgets/qdialogbuttonbox.cpp b/src/gui/widgets/qdialogbuttonbox.cpp
index 732dbc9..9aea32a 100644
--- a/src/gui/widgets/qdialogbuttonbox.cpp
+++ b/src/gui/widgets/qdialogbuttonbox.cpp
@@ -1229,7 +1229,7 @@ bool QDialogButtonBox::event(QEvent *event)
                 break;
         }
 
-        foreach (QPushButton *pb, qFindChildren<QPushButton *>(dialog ? dialog : this)) {
+        foreach (QPushButton *pb, (dialog ? dialog : this)->findChildren<QPushButton *>()) {
             if (pb->isDefault() && pb != firstAcceptButton) {
                 hasDefault = true;
                 break;
diff --git a/src/gui/widgets/qlineedit.h b/src/gui/widgets/qlineedit.h
index 94e0dbe..667562b 100644
--- a/src/gui/widgets/qlineedit.h
+++ b/src/gui/widgets/qlineedit.h
@@ -283,6 +283,7 @@ private:
     Q_PRIVATE_SLOT(d_func(), void _q_editFocusChange(bool))
 #endif
     Q_PRIVATE_SLOT(d_func(), void _q_selectionChanged())
+    Q_PRIVATE_SLOT(d_func(), void _q_updateNeeded(const QRect &))
 };
 
 #endif // QT_NO_LINEEDIT
diff --git a/src/gui/widgets/qlineedit_p.cpp b/src/gui/widgets/qlineedit_p.cpp
index 468c111..d705fa8 100644
--- a/src/gui/widgets/qlineedit_p.cpp
+++ b/src/gui/widgets/qlineedit_p.cpp
@@ -59,6 +59,13 @@ QT_BEGIN_NAMESPACE
 const int QLineEditPrivate::verticalMargin(1);
 const int QLineEditPrivate::horizontalMargin(2);
 
+QRect QLineEditPrivate::adjustedControlRect(const QRect &rect) const
+{
+    QRect cr = adjustedContentsRect();
+    int cix = cr.x() - hscroll + horizontalMargin;
+    return rect.translated(QPoint(cix, vscroll));
+}
+
 int QLineEditPrivate::xToPos(int x, QTextLine::CursorPosition betweenOrOn) const
 {
     QRect cr = adjustedContentsRect();
@@ -68,11 +75,7 @@ int QLineEditPrivate::xToPos(int x, QTextLine::CursorPosition betweenOrOn) const
 
 QRect QLineEditPrivate::cursorRect() const
 {
-    QRect cr = adjustedContentsRect();
-    int cix = cr.x() - hscroll + horizontalMargin;
-    QRect crect = control->cursorRect();
-    crect.moveTo(crect.topLeft() + QPoint(cix, vscroll));
-    return crect;
+    return adjustedControlRect(control->cursorRect());
 }
 
 #ifndef QT_NO_COMPLETER
@@ -141,6 +144,11 @@ void QLineEditPrivate::_q_selectionChanged()
     emit q->selectionChanged();
 }
 
+void QLineEditPrivate::_q_updateNeeded(const QRect &rect)
+{
+    q_func()->update(adjustedControlRect(rect));
+}
+
 void QLineEditPrivate::init(const QString& txt)
 {
     Q_Q(QLineEdit);
@@ -176,7 +184,7 @@ void QLineEditPrivate::init(const QString& txt)
             q, SLOT(update()));
 
     QObject::connect(control, SIGNAL(updateNeeded(QRect)),
-            q, SLOT(update()));
+            q, SLOT(_q_updateNeeded(QRect)));
 
     QStyleOptionFrameV2 opt;
     q->initStyleOption(&opt);
@@ -216,9 +224,8 @@ void QLineEditPrivate::setCursorVisible(bool visible)
     if ((bool)cursorVisible == visible)
         return;
     cursorVisible = visible;
-    QRect r = cursorRect();
     if (control->inputMask().isEmpty())
-        q->update(r);
+        q->update(cursorRect());
     else
         q->update();
 }
diff --git a/src/gui/widgets/qlineedit_p.h b/src/gui/widgets/qlineedit_p.h
index 7a24cb3..b9f9c0b 100644
--- a/src/gui/widgets/qlineedit_p.h
+++ b/src/gui/widgets/qlineedit_p.h
@@ -94,6 +94,8 @@ public:
 #endif
     void init(const QString&);
 
+    QRect adjustedControlRect(const QRect &) const;
+
     int xToPos(int x, QTextLine::CursorPosition = QTextLine::CursorBetweenCharacters) const;
     QRect cursorRect() const;
     void setCursorVisible(bool visible);
@@ -129,6 +131,7 @@ public:
     void _q_editFocusChange(bool);
 #endif
     void _q_selectionChanged();
+    void _q_updateNeeded(const QRect &);
 #ifndef QT_NO_COMPLETER
     void _q_completionHighlighted(QString);
 #endif
diff --git a/src/gui/widgets/qmainwindow.cpp b/src/gui/widgets/qmainwindow.cpp
index 44483ea..0378d2d 100644
--- a/src/gui/widgets/qmainwindow.cpp
+++ b/src/gui/widgets/qmainwindow.cpp
@@ -1573,7 +1573,7 @@ QMenu *QMainWindow::createPopupMenu()
     Q_D(QMainWindow);
     QMenu *menu = 0;
 #ifndef QT_NO_DOCKWIDGET
-    QList<QDockWidget *> dockwidgets = qFindChildren<QDockWidget *>(this);
+    QList<QDockWidget *> dockwidgets = findChildren<QDockWidget *>();
     if (dockwidgets.size()) {
         menu = new QMenu(this);
         for (int i = 0; i < dockwidgets.size(); ++i) {
@@ -1587,7 +1587,7 @@ QMenu *QMainWindow::createPopupMenu()
     }
 #endif // QT_NO_DOCKWIDGET
 #ifndef QT_NO_TOOLBAR
-    QList<QToolBar *> toolbars = qFindChildren<QToolBar *>(this);
+    QList<QToolBar *> toolbars = findChildren<QToolBar *>();
     if (toolbars.size()) {
         if (!menu)
             menu = new QMenu(this);
diff --git a/src/gui/widgets/qmainwindowlayout.cpp b/src/gui/widgets/qmainwindowlayout.cpp
index 593e391..62ee398 100644
--- a/src/gui/widgets/qmainwindowlayout.cpp
+++ b/src/gui/widgets/qmainwindowlayout.cpp
@@ -943,7 +943,7 @@ void QMainWindowLayout::toggleToolBarsVisible()
 #ifdef Q_WS_MAC
     if (layoutState.mainWindow->unifiedTitleAndToolBarOnMac()) {
         // If we hit this case, someone has pressed the "toolbar button" which will
-        // toggle the unified toolbar visiblity, because that's what the user wants.
+        // toggle the unified toolbar visibility, because that's what the user wants.
         // We might be in a situation where someone has hidden all the toolbars
         // beforehand (maybe in construction), but now they've hit this button and
         // and are expecting the items to show. What do we do?
diff --git a/src/gui/widgets/qmdisubwindow.cpp b/src/gui/widgets/qmdisubwindow.cpp
index 62d297e..3f4cdc3 100644
--- a/src/gui/widgets/qmdisubwindow.cpp
+++ b/src/gui/widgets/qmdisubwindow.cpp
@@ -2203,7 +2203,7 @@ void QMdiSubWindowPrivate::setSizeGrip(QSizeGrip *newSizeGrip)
 void QMdiSubWindowPrivate::setSizeGripVisible(bool visible) const
 {
     // See if we can find any size grips
-    QList<QSizeGrip *> sizeGrips = qFindChildren<QSizeGrip *>(q_func());
+    QList<QSizeGrip *> sizeGrips = q_func()->findChildren<QSizeGrip *>();
     foreach (QSizeGrip *grip, sizeGrips)
         grip->setVisible(visible);
 }
@@ -2319,7 +2319,7 @@ void QMdiSubWindow::setWidget(QWidget *widget)
         widget->setParent(this);
 
 #ifndef QT_NO_SIZEGRIP
-    QSizeGrip *sizeGrip = qFindChild<QSizeGrip *>(widget);
+    QSizeGrip *sizeGrip = widget->findChild<QSizeGrip *>();
     if (sizeGrip)
         sizeGrip->installEventFilter(this);
     if (d->sizeGrip)
diff --git a/src/gui/widgets/qmenu.cpp b/src/gui/widgets/qmenu.cpp
index 469c7d4..245657a 100644
--- a/src/gui/widgets/qmenu.cpp
+++ b/src/gui/widgets/qmenu.cpp
@@ -262,7 +262,7 @@ void QMenuPrivate::updateActionRects() const
     const int deskFw = style->pixelMetric(QStyle::PM_MenuDesktopFrameWidth, &opt, q);
     const int tearoffHeight = tearoff ? style->pixelMetric(QStyle::PM_MenuTearoffHeight, &opt, q) : 0;
 
-    //for compatability now - will have to refactor this away..
+    //for compatibility now - will have to refactor this away
     tabWidth = 0;
     maxIconWidth = 0;
     hasCheckableItems = false;
@@ -1154,7 +1154,7 @@ void QMenuPrivate::_q_actionHovered()
 
 bool QMenuPrivate::hasMouseMoved(const QPoint &globalPos)
 {
-    //determines if the mouse has moved (ie its intial position has
+    //determines if the mouse has moved (ie its initial position has
     //changed by more than QApplication::startDragDistance()
     //or if there were at least 6 mouse motions)
     return motions > 6 ||
diff --git a/src/gui/widgets/qmenubar.cpp b/src/gui/widgets/qmenubar.cpp
index e8e80b7..df16f7f 100644
--- a/src/gui/widgets/qmenubar.cpp
+++ b/src/gui/widgets/qmenubar.cpp
@@ -102,7 +102,7 @@ void QMenuBarExtension::paintEvent(QPaintEvent *)
     QStylePainter p(this);
     QStyleOptionToolButton opt;
     initStyleOption(&opt);
-    // We do not need to draw both extention arrows
+    // We do not need to draw both extension arrows
     opt.features &= ~QStyleOptionToolButton::HasMenu;
     p.drawComplexControl(QStyle::CC_ToolButton, opt);
 }
diff --git a/src/gui/widgets/qprintpreviewwidget.cpp b/src/gui/widgets/qprintpreviewwidget.cpp
index 45b15ef..ea311d3 100644
--- a/src/gui/widgets/qprintpreviewwidget.cpp
+++ b/src/gui/widgets/qprintpreviewwidget.cpp
@@ -469,7 +469,7 @@ void QPrintPreviewWidgetPrivate::setZoomFactor(qreal _zoomFactor)
     \o Create the QPrintPreviewWidget
 
     Construct the QPrintPreviewWidget either by passing in an
-    exisiting QPrinter object, or have QPrintPreviewWidget create a
+    existing QPrinter object, or have QPrintPreviewWidget create a
     default constructed QPrinter object for you.
 
     \o Connect the paintRequested() signal to a slot.
diff --git a/src/gui/widgets/qpushbutton.cpp b/src/gui/widgets/qpushbutton.cpp
index 8a18ed0..237c266 100644
--- a/src/gui/widgets/qpushbutton.cpp
+++ b/src/gui/widgets/qpushbutton.cpp
@@ -687,11 +687,11 @@ bool QPushButton::event(QEvent *e)
 /*! \reimp */
 bool QPushButton::hitButton(const QPoint &pos) const
 {
-    // This is only required if we are using the native style, so check that first.
-        QMacStyle *macStyle = qobject_cast<QMacStyle *>(style());
-    // If this is a flat button we just bail out.
-    if(isFlat() || (0 == macStyle))
+    QStyleOptionButton opt;
+    initStyleOption(&opt);
+    if (qt_mac_buttonIsRenderedFlat(this, &opt))
         return QAbstractButton::hitButton(pos);
+
     // Now that we know we are using the native style, let's proceed.
     Q_D(const QPushButton);
     QPushButtonPrivate *nonConst = const_cast<QPushButtonPrivate *>(d);
diff --git a/src/gui/widgets/qtoolbarextension.cpp b/src/gui/widgets/qtoolbarextension.cpp
index 032c6f0..574a775 100644
--- a/src/gui/widgets/qtoolbarextension.cpp
+++ b/src/gui/widgets/qtoolbarextension.cpp
@@ -75,7 +75,7 @@ void QToolBarExtension::paintEvent(QPaintEvent *)
     QStylePainter p(this);
     QStyleOptionToolButton opt;
     initStyleOption(&opt);
-    // We do not need to draw both extention arrows
+    // We do not need to draw both extension arrows
     opt.features &= ~QStyleOptionToolButton::HasMenu;
     p.drawComplexControl(QStyle::CC_ToolButton, opt);
 }
diff --git a/src/gui/widgets/qworkspace.cpp b/src/gui/widgets/qworkspace.cpp
index 7180c4d..5cf67a5 100644
--- a/src/gui/widgets/qworkspace.cpp
+++ b/src/gui/widgets/qworkspace.cpp
@@ -2923,7 +2923,7 @@ void QWorkspaceChild::setActive(bool b)
         iconw->setActive(act);
     update();
 
-    QList<QWidget*> wl = qFindChildren<QWidget*>(childWidget);
+    QList<QWidget*> wl = childWidget->findChildren<QWidget*>();
     if (act) {
         for (int i = 0; i < wl.size(); ++i) {
             QWidget *w = wl.at(i);