Merge branch '4.6' of git@scm.dev.nokia.troll.no:qt/oslo-staging-1 into 4.6

35 files changed, 286 insertions, 118 deletions

diff --git a/src/gui/dialogs/qcolordialog_mac.mm b/src/gui/dialogs/qcolordialog_mac.mm
index 5f074c0..53d2e1e 100644
--- a/src/gui/dialogs/qcolordialog_mac.mm
+++ b/src/gui/dialogs/qcolordialog_mac.mm
@@ -336,7 +336,6 @@ QT_USE_NAMESPACE
         }
     }
 
-    QAbstractEventDispatcher::instance()->interrupt();
     if (mResultCode == NSCancelButton)
         mPriv->colorDialog()->reject();
     else
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index da1c151..94a37a0 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -1240,7 +1240,7 @@ void QGraphicsItemPrivate::initStyleOption(QStyleOptionGraphicsItem *option, con
         const QTransform reverseMap = worldTransform.inverted();
         const QVector<QRect> exposedRects(exposedRegion.rects());
         for (int i = 0; i < exposedRects.size(); ++i) {
-            option->exposedRect |= reverseMap.mapRect(exposedRects.at(i));
+            option->exposedRect |= reverseMap.mapRect(QRectF(exposedRects.at(i)));
             if (option->exposedRect.contains(brect))
                 break;
         }
diff --git a/src/gui/graphicsview/qgraphicsitemanimation.cpp b/src/gui/graphicsview/qgraphicsitemanimation.cpp
index be2f300..b67ee2e 100644
--- a/src/gui/graphicsview/qgraphicsitemanimation.cpp
+++ b/src/gui/graphicsview/qgraphicsitemanimation.cpp
@@ -45,6 +45,7 @@
     support for QGraphicsItem.
     \since 4.2
     \ingroup graphicsview-api
+    \deprecated
 
     The QGraphicsItemAnimation class animates a QGraphicsItem. You can
     schedule changes to the item's transformation matrix at
diff --git a/src/gui/gui.pro b/src/gui/gui.pro
index 7c24002..4215f97 100644
--- a/src/gui/gui.pro
+++ b/src/gui/gui.pro
@@ -54,4 +54,4 @@ DEFINES += Q_INTERNAL_QAPP_SRC
 symbian:TARGET.UID3=0x2001B2DD
 
 # ro-section in gui can exceed default allocated space, so more rw-section little further
-symbian-sbsv2: MMP_RULES += "LINKEROPTION  armcc --rw-base 0x800000"
+symbian-sbsv2: QMAKE_LFLAGS.ARMCC += --rw-base 0x800000"
diff --git a/src/gui/image/qiconloader.cpp b/src/gui/image/qiconloader.cpp
index 15af7a2..ad9bdd0 100644
--- a/src/gui/image/qiconloader.cpp
+++ b/src/gui/image/qiconloader.cpp
@@ -249,21 +249,19 @@ QThemeIconEntries QIconLoader::findIconHelper(const QString &themeName,
         const QIconDirInfo &dirInfo = subDirs.at(i);
         QString subdir = dirInfo.path;
         QDir currentDir(contentDir + subdir);
-
-        if (dirInfo.type == QIconDirInfo::Scalable && m_supportsSvg &&
-            currentDir.exists(iconName + svgext)) {
-            ScalableEntry *iconEntry = new ScalableEntry;
-            iconEntry->dir = dirInfo;
-            iconEntry->filename = currentDir.filePath(iconName + svgext);
-            entries.append(iconEntry);
-
-        } else if (currentDir.exists(iconName + pngext)) {
+        if (currentDir.exists(iconName + pngext)) {
             PixmapEntry *iconEntry = new PixmapEntry;
             iconEntry->dir = dirInfo;
             iconEntry->filename = currentDir.filePath(iconName + pngext);
             // Notice we ensure that pixmap entries allways come before
             // scalable to preserve search order afterwards
             entries.prepend(iconEntry);
+        } else if (m_supportsSvg &&
+            currentDir.exists(iconName + svgext)) {
+            ScalableEntry *iconEntry = new ScalableEntry;
+            iconEntry->dir = dirInfo;
+            iconEntry->filename = currentDir.filePath(iconName + svgext);
+            entries.append(iconEntry);
         }
     }
 
@@ -444,10 +442,8 @@ QIconLoaderEngineEntry *QIconLoaderEngine::entryForSize(const QSize &size)
 
 /*
  * Returns the actual icon size. For scalable svg's this is equivalent
- * to the requested size. Otherwise the closest match is returned.
- *
- * todo: the spec is a bit fuzzy in this area, but we should probably
- * allow scaling down pixmap icons as well.
+ * to the requested size. Otherwise the closest match is returned but
+ * we can never return a bigger size than the requested size.
  *
  */
 QSize QIconLoaderEngine::actualSize(const QSize &size, QIcon::Mode mode,
@@ -460,8 +456,10 @@ QSize QIconLoaderEngine::actualSize(const QSize &size, QIcon::Mode mode,
         const QIconDirInfo &dir = entry->dir;
         if (dir.type == QIconDirInfo::Scalable)
             return size;
-        else
-            return QSize(dir.size, dir.size);
+        else {
+            int result = qMin<int>(dir.size, qMin(size.width(), size.height()));
+            return QSize(result, result);
+        }
     }
     return QIconEngineV2::actualSize(size, mode, state);
 }
diff --git a/src/gui/image/qnativeimage.cpp b/src/gui/image/qnativeimage.cpp
index e4ea2e9..3b43ab6 100644
--- a/src/gui/image/qnativeimage.cpp
+++ b/src/gui/image/qnativeimage.cpp
@@ -178,6 +178,8 @@ QNativeImage::QNativeImage(int width, int height, QImage::Format format,bool /*
     if (ok) {
         xshmimg->data = (char*)shmat(xshminfo.shmid, 0, 0);
         xshminfo.shmaddr = xshmimg->data;
+        if (shmctl(xshminfo.shmid, IPC_RMID, 0) == -1)
+            qWarning() << "Error while marking the shared memory segment to be destroyed";
         ok = (xshminfo.shmaddr != (char*)-1);
         if (ok)
             image = QImage((uchar *)xshmimg->data, width, height, systemFormat());
diff --git a/src/gui/image/qpixmap_s60.cpp b/src/gui/image/qpixmap_s60.cpp
index 17baa50..dc33ade 100644
--- a/src/gui/image/qpixmap_s60.cpp
+++ b/src/gui/image/qpixmap_s60.cpp
@@ -977,4 +977,9 @@ void QS60PixmapData::fromNativeType(void* pixmap, NativeType nativeType)
     }
 }
 
+QPixmapData *QS60PixmapData::createCompatiblePixmapData() const
+{
+    return new QS60PixmapData(pixelType());
+}
+
 QT_END_NAMESPACE
diff --git a/src/gui/image/qpixmap_s60_p.h b/src/gui/image/qpixmap_s60_p.h
index b1b5824..8631ebd 100644
--- a/src/gui/image/qpixmap_s60_p.h
+++ b/src/gui/image/qpixmap_s60_p.h
@@ -87,6 +87,8 @@ public:
     QS60PixmapData(PixelType type);
     ~QS60PixmapData();
 
+    QPixmapData *createCompatiblePixmapData() const;
+
     void resize(int width, int height);
     void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
     void copy(const QPixmapData *data, const QRect &rect);
diff --git a/src/gui/itemviews/qabstractitemview.cpp b/src/gui/itemviews/qabstractitemview.cpp
index 23bef12..c691fe2 100644
--- a/src/gui/itemviews/qabstractitemview.cpp
+++ b/src/gui/itemviews/qabstractitemview.cpp
@@ -138,10 +138,22 @@ void QAbstractItemViewPrivate::init()
 #endif
 }
 
+void QAbstractItemViewPrivate::setHoverIndex(const QPersistentModelIndex &index)
+{
+    Q_Q(QAbstractItemView);
+    if (hover == index)
+        return;
+
+    q->update(hover); //update the old one
+    hover = index;
+    q->update(hover); //update the new one
+}
+
 void QAbstractItemViewPrivate::checkMouseMove(const QPersistentModelIndex &index)
 {
     //we take a persistent model index because the model might change by emitting signals
     Q_Q(QAbstractItemView);
+    setHoverIndex(index);
     if (viewportEnteredNeeded || enteredIndex != index) {
         viewportEnteredNeeded = false;
 
@@ -1536,22 +1548,13 @@ bool QAbstractItemView::viewportEvent(QEvent *event)
 {
     Q_D(QAbstractItemView);
     switch (event->type()) {
-    case QEvent::HoverEnter: {
-        QHoverEvent *he = static_cast<QHoverEvent*>(event);
-        d->hover = indexAt(he->pos());
-        update(d->hover);
-        break; }
-    case QEvent::HoverLeave: {
-        update(d->hover); // update old
-        d->hover = QModelIndex();
-        break; }
-    case QEvent::HoverMove: {
-        QHoverEvent *he = static_cast<QHoverEvent*>(event);
-        QModelIndex old = d->hover;
-        d->hover = indexAt(he->pos());
-        if (d->hover != old)
-            d->viewport->update(visualRect(old)|visualRect(d->hover));
-        break; }
+    case QEvent::HoverMove:
+    case QEvent::HoverEnter:
+        d->setHoverIndex(indexAt(static_cast<QHoverEvent*>(event)->pos()));
+        break;
+    case QEvent::HoverLeave:
+        d->setHoverIndex(QModelIndex());
+        break;
     case QEvent::Enter:
         d->viewportEnteredNeeded = true;
         break;
diff --git a/src/gui/itemviews/qabstractitemview_p.h b/src/gui/itemviews/qabstractitemview_p.h
index c691f61..f1ba874 100644
--- a/src/gui/itemviews/qabstractitemview_p.h
+++ b/src/gui/itemviews/qabstractitemview_p.h
@@ -152,6 +152,8 @@ public:
                                                                    const QEvent *event) const;
     virtual void selectAll(QItemSelectionModel::SelectionFlags command);
 
+    void setHoverIndex(const QPersistentModelIndex &index);
+
     void checkMouseMove(const QPersistentModelIndex &index);
     inline void checkMouseMove(const QPoint &pos) { checkMouseMove(q_func()->indexAt(pos)); }
 
diff --git a/src/gui/itemviews/qlistview.cpp b/src/gui/itemviews/qlistview.cpp
index 052308c..d03cdd3 100644
--- a/src/gui/itemviews/qlistview.cpp
+++ b/src/gui/itemviews/qlistview.cpp
@@ -966,15 +966,19 @@ void QListView::paintEvent(QPaintEvent *e)
     bool alternateBase = false;
     int previousRow = -2; // trigger the alternateBase adjustment on first pass
 
+    int maxSize = (flow() == TopToBottom)
+        ? qMax(viewport()->size().width(), d->contentsSize().width()) - 2 * d->spacing()
+        : qMax(viewport()->size().height(), d->contentsSize().height()) - 2 * d->spacing();
+
     QVector<QModelIndex>::const_iterator end = toBeRendered.constEnd();
     for (QVector<QModelIndex>::const_iterator it = toBeRendered.constBegin(); it != end; ++it) {
         Q_ASSERT((*it).isValid());
         option.rect = visualRect(*it);
 
         if (flow() == TopToBottom)
-            option.rect.setWidth(qMin(d->contentsSize().width() - 2 * d->spacing(), option.rect.width()));
+            option.rect.setWidth(qMin(maxSize, option.rect.width()));
         else
-            option.rect.setHeight(qMin(d->contentsSize().height() - 2 * d->spacing(), option.rect.height()));
+            option.rect.setHeight(qMin(maxSize, option.rect.height()));
 
         option.state = state;
         if (selections && selections->isSelected(*it))
diff --git a/src/gui/itemviews/qtableview.cpp b/src/gui/itemviews/qtableview.cpp
index 02e5fff..d27e693 100644
--- a/src/gui/itemviews/qtableview.cpp
+++ b/src/gui/itemviews/qtableview.cpp
@@ -114,7 +114,7 @@ void QSpanCollection::updateSpan(QSpanCollection::Span *span, int old_height)
         }
     } else if (old_height > span->height()) {
         //remove the span from all the subspans lists that intersect the columns not covered anymore
-        Index::iterator it_y = index.lowerBound(-span->bottom());
+        Index::iterator it_y = index.lowerBound(qMin(-span->bottom(), 0));
         Q_ASSERT(it_y != index.end()); //it_y must exist since the span is in the list
         while (-it_y.key() <= span->top() + old_height -1) {
             if (-it_y.key() > span->bottom()) {
@@ -1064,14 +1064,29 @@ QTableView::~QTableView()
 void QTableView::setModel(QAbstractItemModel *model)
 {
     Q_D(QTableView);
-    connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
-            this, SLOT(_q_updateSpanInsertedRows(QModelIndex,int,int)));
-    connect(model, SIGNAL(columnsInserted(QModelIndex,int,int)),
-            this, SLOT(_q_updateSpanInsertedColumns(QModelIndex,int,int)));
-    connect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
-            this, SLOT(_q_updateSpanRemovedRows(QModelIndex,int,int)));
-    connect(model, SIGNAL(columnsRemoved(QModelIndex,int,int)),
-            this, SLOT(_q_updateSpanRemovedColumns(QModelIndex,int,int)));
+    if (model == d->model)
+        return;
+    //let's disconnect from the old model
+    if (d->model && d->model != QAbstractItemModelPrivate::staticEmptyModel()) {
+        disconnect(d->model, SIGNAL(rowsInserted(QModelIndex,int,int)),
+                this, SLOT(_q_updateSpanInsertedRows(QModelIndex,int,int)));
+        disconnect(d->model, SIGNAL(columnsInserted(QModelIndex,int,int)),
+                this, SLOT(_q_updateSpanInsertedColumns(QModelIndex,int,int)));
+        disconnect(d->model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
+                this, SLOT(_q_updateSpanRemovedRows(QModelIndex,int,int)));
+        disconnect(d->model, SIGNAL(columnsRemoved(QModelIndex,int,int)),
+                this, SLOT(_q_updateSpanRemovedColumns(QModelIndex,int,int)));
+    }
+    if (model) { //and connect to the new one
+        connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
+                this, SLOT(_q_updateSpanInsertedRows(QModelIndex,int,int)));
+        connect(model, SIGNAL(columnsInserted(QModelIndex,int,int)),
+                this, SLOT(_q_updateSpanInsertedColumns(QModelIndex,int,int)));
+        connect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
+                this, SLOT(_q_updateSpanRemovedRows(QModelIndex,int,int)));
+        connect(model, SIGNAL(columnsRemoved(QModelIndex,int,int)),
+                this, SLOT(_q_updateSpanRemovedColumns(QModelIndex,int,int)));
+    }
     d->verticalHeader->setModel(model);
     d->horizontalHeader->setModel(model);
     QAbstractItemView::setModel(model);
diff --git a/src/gui/itemviews/qtreeview.cpp b/src/gui/itemviews/qtreeview.cpp
index 8d50870b..3ad9fbb 100644
--- a/src/gui/itemviews/qtreeview.cpp
+++ b/src/gui/itemviews/qtreeview.cpp
@@ -215,6 +215,13 @@ void QTreeView::setModel(QAbstractItemModel *model)
     Q_D(QTreeView);
     if (model == d->model)
         return;
+    if (d->model && d->model != QAbstractItemModelPrivate::staticEmptyModel()) {
+        disconnect(d->model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
+                this, SLOT(rowsRemoved(QModelIndex,int,int)));
+
+        disconnect(d->model, SIGNAL(modelAboutToBeReset()), this, SLOT(_q_modelAboutToBeReset()));
+    }
+
     if (d->selectionModel) { // support row editing
         disconnect(d->selectionModel, SIGNAL(currentRowChanged(QModelIndex,QModelIndex)),
                    d->model, SLOT(submit()));
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 4764a2d..9f4cd0c 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -933,7 +933,8 @@ void QApplicationPrivate::initialize()
     QApplicationPrivate::wheel_scroll_lines = 3;
 #endif
 
-    initializeMultitouch();
+    if (qt_is_gui_used)
+        initializeMultitouch();
 }
 
 /*!
diff --git a/src/gui/kernel/qapplication_mac.mm b/src/gui/kernel/qapplication_mac.mm
index 84da56e..22a0959 100644
--- a/src/gui/kernel/qapplication_mac.mm
+++ b/src/gui/kernel/qapplication_mac.mm
@@ -2449,7 +2449,7 @@ OSStatus QApplicationPrivate::globalAppleEventProcessor(const AppleEvent *ae, Ap
         switch(aeID) {
         case kAEQuitApplication: {
             extern bool qt_mac_quit_menu_item_enabled; // qmenu_mac.cpp
-            if(!QApplicationPrivate::modalState() && qt_mac_quit_menu_item_enabled) {
+            if (qt_mac_quit_menu_item_enabled) {
                 QCloseEvent ev;
                 QApplication::sendSpontaneousEvent(app, &ev);
                 if(ev.isAccepted()) {
diff --git a/src/gui/kernel/qapplication_s60.cpp b/src/gui/kernel/qapplication_s60.cpp
index c7f0c00..85b6d00 100644
--- a/src/gui/kernel/qapplication_s60.cpp
+++ b/src/gui/kernel/qapplication_s60.cpp
@@ -712,7 +712,7 @@ TKeyResponse QSymbianControl::OfferKeyEvent(const TKeyEvent& keyEvent, TEventCod
         Qt::KeyboardModifiers mods = mapToQtModifiers(keyEvent.iModifiers);
         QKeyEventEx qKeyEvent(type == EEventKeyUp ? QEvent::KeyRelease : QEvent::KeyPress, keyCode,
                 mods, qt_keymapper_private()->translateKeyEvent(keyCode, mods),
-                false, 1, keyEvent.iScanCode, s60Keysym, keyEvent.iModifiers);
+                (keyEvent.iRepeats != 0), 1, keyEvent.iScanCode, s60Keysym, keyEvent.iModifiers);
 //        WId wid = reinterpret_cast<RWindowGroup *>(keyEvent.Handle())->Child();
 //        if (!wid)
 //             Could happen if window isn't shown yet.
diff --git a/src/gui/kernel/qcocoaapplicationdelegate_mac.mm b/src/gui/kernel/qcocoaapplicationdelegate_mac.mm
index 37dcc67..304e5d3 100644
--- a/src/gui/kernel/qcocoaapplicationdelegate_mac.mm
+++ b/src/gui/kernel/qcocoaapplicationdelegate_mac.mm
@@ -178,6 +178,9 @@ static void cleanupCocoaApplicationDelegate()
     return [[qtMenuLoader retain] autorelease];
 }
 
+// This function will only be called when NSApp is actually running. Before
+// that, the kAEQuitApplication apple event will be sendt to 
+// QApplicationPrivate::globalAppleEventProcessor in qapplication_mac.mm
 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
 {
     Q_UNUSED(sender);
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm
index a16d1f8..3da783f 100644
--- a/src/gui/kernel/qcocoaview_mac.mm
+++ b/src/gui/kernel/qcocoaview_mac.mm
@@ -64,12 +64,16 @@
 
 #include <qdebug.h>
 
-@interface NSEvent (DeviceDelta)
+@interface NSEvent (Qt_Compile_Leopard_DeviceDelta)
   - (CGFloat)deviceDeltaX;
   - (CGFloat)deviceDeltaY;
   - (CGFloat)deviceDeltaZ;
 @end
 
+@interface NSEvent (Qt_Compile_Leopard_Gestures)
+  - (CGFloat)magnification;
+@end
+
 QT_BEGIN_NAMESPACE
 
 Q_GLOBAL_STATIC(DnDParams, qMacDnDParams);
@@ -79,6 +83,7 @@ extern bool qt_sendSpontaneousEvent(QObject *, QEvent *); // qapplication.cpp
 extern OSViewRef qt_mac_nativeview_for(const QWidget *w); // qwidget_mac.mm
 extern const QStringList& qEnabledDraggedTypes(); // qmime_mac.cpp
 extern QPointer<QWidget> qt_mouseover; //qapplication_mac.mm
+extern QPointer<QWidget> qt_button_down; //qapplication_mac.cpp
 
 Qt::MouseButton cocoaButton2QtButton(NSInteger buttonNum)
 {
@@ -691,6 +696,9 @@ extern "C" {
 
 - (void)mouseDown:(NSEvent *)theEvent
 {
+    if (!qt_button_down)
+        qt_button_down = qwidget;
+
     qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonPress, Qt::LeftButton);
     // Don't call super here. This prevents us from getting the mouseUp event,
     // which we need to send even if the mouseDown event was not accepted.
@@ -700,75 +708,62 @@ extern "C" {
 
 - (void)mouseUp:(NSEvent *)theEvent
 {
-    bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonRelease, Qt::LeftButton);
+    qt_button_down = 0;
 
-    if (!mouseOK)
-        [super mouseUp:theEvent];
+    qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonRelease, Qt::LeftButton);
 }
 
 - (void)rightMouseDown:(NSEvent *)theEvent
 {
-    bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonPress, Qt::RightButton);
+    if (!qt_button_down)
+        qt_button_down = qwidget;
 
-    if (!mouseOK)
-        [super rightMouseDown:theEvent];
+    qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonPress, Qt::RightButton);
 }
 
 - (void)rightMouseUp:(NSEvent *)theEvent
 {
-    bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonRelease, Qt::RightButton);
+    qt_button_down = 0;
 
-    if (!mouseOK)
-        [super rightMouseUp:theEvent];
+    qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonRelease, Qt::RightButton);
 }
 
 - (void)otherMouseDown:(NSEvent *)theEvent
 {
-    Qt::MouseButton mouseButton = cocoaButton2QtButton([theEvent buttonNumber]);
-    bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonPress, mouseButton);
+    if (!qt_button_down)
+        qt_button_down = qwidget;
 
-    if (!mouseOK)
-        [super otherMouseDown:theEvent];
+    Qt::MouseButton mouseButton = cocoaButton2QtButton([theEvent buttonNumber]);
+    qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonPress, mouseButton);
 }
 
 - (void)otherMouseUp:(NSEvent *)theEvent
 {
-    Qt::MouseButton mouseButton = cocoaButton2QtButton([theEvent buttonNumber]);
-    bool mouseOK = qt_mac_handleMouseEvent(self, theEvent,  QEvent::MouseButtonRelease, mouseButton);
-
-    if (!mouseOK)
-        [super otherMouseUp:theEvent];
+    qt_button_down = 0;
 
+    Qt::MouseButton mouseButton = cocoaButton2QtButton([theEvent buttonNumber]);
+    qt_mac_handleMouseEvent(self, theEvent,  QEvent::MouseButtonRelease, mouseButton);
 }
 
 - (void)mouseDragged:(NSEvent *)theEvent
 {
     qMacDnDParams()->view = self;
     qMacDnDParams()->theEvent = theEvent;
-    bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseMove, Qt::NoButton);
-
-    if (!mouseOK)
-        [super mouseDragged:theEvent];
+    qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseMove, Qt::NoButton);
 }
 
 - (void)rightMouseDragged:(NSEvent *)theEvent
 {
     qMacDnDParams()->view = self;
     qMacDnDParams()->theEvent = theEvent;
-    bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseMove, Qt::NoButton);
-
-    if (!mouseOK)
-        [super rightMouseDragged:theEvent];
+    qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseMove, Qt::NoButton);
 }
 
 - (void)otherMouseDragged:(NSEvent *)theEvent
 {
     qMacDnDParams()->view = self;
     qMacDnDParams()->theEvent = theEvent;
-    bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseMove, Qt::NoButton);
-
-    if (!mouseOK)
-        [super otherMouseDragged:theEvent];
+    qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseMove, Qt::NoButton);
 }
 
 - (void)scrollWheel:(NSEvent *)theEvent
@@ -893,6 +888,7 @@ extern "C" {
     bool all = qwidget->testAttribute(Qt::WA_TouchPadAcceptSingleTouchEvents);
     qt_translateRawTouchEvent(qwidget, QTouchEvent::TouchPad, QCocoaTouch::getCurrentTouchPointList(event, all));
 }
+#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
 
 - (void)magnifyWithEvent:(NSEvent *)event;
 {
@@ -963,7 +959,6 @@ extern "C" {
     qNGEvent.position = flipPoint(p).toPoint();
     qt_sendSpontaneousEvent(qwidget, &qNGEvent);
 }
-#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
 
 - (void)frameDidChange:(NSNotification *)note
 {
@@ -1451,7 +1446,7 @@ Qt::DropAction QDragManager::drag(QDrag *o)
     [image release];
     dragPrivate()->executed_action = Qt::IgnoreAction;
     object = 0;
-    Qt::DropAction performedAction(qt_mac_mapNSDragOperation(dndParams.performedAction));
+    Qt::DropAction performedAction(qt_mac_mapNSDragOperation(qMacDnDParams()->performedAction));
     // do post drag processing, if required.
     if(performedAction != Qt::IgnoreAction) {
         // check if the receiver points us to a file location.
diff --git a/src/gui/kernel/qcocoawindowdelegate_mac.mm b/src/gui/kernel/qcocoawindowdelegate_mac.mm
index 9fb674e..8a22a65 100644
--- a/src/gui/kernel/qcocoawindowdelegate_mac.mm
+++ b/src/gui/kernel/qcocoawindowdelegate_mac.mm
@@ -324,8 +324,13 @@ static void cleanupCocoaWindowDelegate()
     NSRect frameToReturn = defaultFrame;
     QWidget *qwidget = m_windowHash->value(window);
     QSizeF size = qwidget->maximumSize();
-    frameToReturn.size.width = qMin<CGFloat>(frameToReturn.size.width, size.width());
-    frameToReturn.size.height = qMin<CGFloat>(frameToReturn.size.height, size.height());
+    NSRect windowFrameRect = [window frame];
+    NSRect viewFrameRect = [[window contentView] frame];
+    // consider additional size required for titlebar & frame
+    frameToReturn.size.width = qMin<CGFloat>(frameToReturn.size.width,
+            size.width()+(windowFrameRect.size.width - viewFrameRect.size.width));
+    frameToReturn.size.height = qMin<CGFloat>(frameToReturn.size.height,
+            size.height()+(windowFrameRect.size.height - viewFrameRect.size.height));
     return frameToReturn;
 }
 
diff --git a/src/gui/kernel/qeventdispatcher_mac.mm b/src/gui/kernel/qeventdispatcher_mac.mm
index 427f0b0..e0eebfd 100644
--- a/src/gui/kernel/qeventdispatcher_mac.mm
+++ b/src/gui/kernel/qeventdispatcher_mac.mm
@@ -572,7 +572,7 @@ bool QEventDispatcherMac::processEvents(QEventLoop::ProcessEventsFlags flags)
                 while (!d->interrupt && [NSApp runModalSession:session] == NSRunContinuesResponse)
                     qt_mac_waitForMoreModalSessionEvents();
                 if (!d->interrupt && session == d->currentModalSessionCached) {
-                    // Someone called e.g. [NSApp stopModal:] from outside the event
+                    // INVARIANT: Someone called e.g. [NSApp stopModal:] from outside the event
                     // dispatcher (e.g to stop a native dialog). But that call wrongly stopped
                     // 'session' as well. As a result, we need to restart all internal sessions:
                     d->temporarilyStopAllModalSessions();
@@ -596,7 +596,13 @@ bool QEventDispatcherMac::processEvents(QEventLoop::ProcessEventsFlags flags)
                 if (NSModalSession session = d->currentModalSession()) {
                     if (flags & QEventLoop::WaitForMoreEvents)
                         qt_mac_waitForMoreModalSessionEvents();
-                    [NSApp runModalSession:session];
+                    NSInteger status = [NSApp runModalSession:session];
+                    if (status != NSRunContinuesResponse && session == d->currentModalSessionCached) {
+                        // INVARIANT: Someone called e.g. [NSApp stopModal:] from outside the event
+                        // dispatcher (e.g to stop a native dialog). But that call wrongly stopped
+                        // 'session' as well. As a result, we need to restart all internal sessions:
+                        d->temporarilyStopAllModalSessions();
+                    }
                     retVal = true;
                     break;
                 } else {
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac.mm b/src/gui/kernel/qt_cocoa_helpers_mac.mm
index c0fb8aa..2bf1465 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac.mm
+++ b/src/gui/kernel/qt_cocoa_helpers_mac.mm
@@ -899,6 +899,14 @@ bool qt_mac_handleMouseEvent(void * /* NSView * */view, void * /* NSEvent * */ev
             widgetToGetMouse =
                 [static_cast<QT_MANGLE_NAMESPACE(QCocoaView) *>(tmpView) qt_qwidget];
         }
+    } else {
+        extern QPointer<QWidget> qt_button_down; //qapplication_mac.cpp
+        if (!mac_mouse_grabber && qt_button_down) {
+            // if there is no explicit grabber, and the mouse was grabbed
+            // implicitely (i.e. a mousebutton was pressed)
+            widgetToGetMouse = qt_button_down;
+            tmpView = qt_mac_nativeview_for(widgetToGetMouse);
+        }
     }
 
     NSPoint localPoint = [tmpView convertPoint:windowPoint fromView:nil];
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index 709f6f3..fbb9115 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -8248,7 +8248,8 @@ bool QWidget::event(QEvent *event)
             QList<QObject*> childList = d->children;
             for (int i = 0; i < childList.size(); ++i) {
                 QObject *o = childList.at(i);
-                QApplication::sendEvent(o, event);
+                if (o)
+                    QApplication::sendEvent(o, event);
             }
         }
         update();
@@ -8277,7 +8278,7 @@ bool QWidget::event(QEvent *event)
             QList<QObject*> childList = d->children;
             for (int i = 0; i < childList.size(); ++i) {
                 QObject *o = childList.at(i);
-                if (o != QApplication::activeModalWidget()) {
+                if (o && o != QApplication::activeModalWidget()) {
                     if (qobject_cast<QWidget *>(o) && static_cast<QWidget *>(o)->isWindow()) {
                         // do not forward the event to child windows,
                         // QApplication does this for us
diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index 71f0077..0d9f9ee 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -725,6 +725,23 @@ static OSWindowRef qt_mac_create_window(QWidget *, WindowClass wclass, WindowAtt
     return window;
 }
 
+#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_6
+/* We build the release package against the 10.4 SDK.
+   So, to enable gestures for applications running on
+   10.6+, we define the missing constants here: */
+enum {
+    kEventClassGesture              = 'gest',
+    kEventGestureStarted            = 1,
+    kEventGestureEnded              = 2,
+    kEventGestureMagnify            = 4,
+    kEventGestureSwipe              = 5,
+    kEventGestureRotate             = 6,
+    kEventParamRotationAmount       = 'rota',
+    kEventParamSwipeDirection       = 'swip',
+    kEventParamMagnificationAmount  = 'magn'
+};
+#endif
+
 // window events
 static EventTypeSpec window_events[] = {
     { kEventClassWindow, kEventWindowClose },
@@ -741,13 +758,11 @@ static EventTypeSpec window_events[] = {
     { kEventClassWindow, kEventWindowGetRegion },
     { kEventClassWindow, kEventWindowGetClickModality },
     { kEventClassWindow, kEventWindowTransitionCompleted },
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
     { kEventClassGesture, kEventGestureStarted },
     { kEventClassGesture, kEventGestureEnded },
     { kEventClassGesture, kEventGestureMagnify },
     { kEventClassGesture, kEventGestureSwipe },
     { kEventClassGesture, kEventGestureRotate },
-#endif
     { kEventClassMouse, kEventMouseDown }
 };
 static EventHandlerUPP mac_win_eventUPP = 0;
@@ -1036,7 +1051,6 @@ OSStatus QWidgetPrivate::qt_window_event(EventHandlerCallRef er, EventRef event,
         handled_event = false;
         break; }
 
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
     case kEventClassGesture: {
         // First, find the widget that was under
         // the mouse when the gesture happened:
@@ -1064,7 +1078,7 @@ OSStatus QWidgetPrivate::qt_window_event(EventHandlerCallRef er, EventRef event,
                 break;
             case kEventGestureRotate: {
                 CGFloat amount;
-                if (GetEventParameter(event, kEventParamRotationAmount, typeCGFloat, 0,
+                if (GetEventParameter(event, kEventParamRotationAmount, 'cgfl', 0,
                             sizeof(amount), 0, &amount) != noErr) {
                     handled_event = false;
                     break;
@@ -1091,7 +1105,7 @@ OSStatus QWidgetPrivate::qt_window_event(EventHandlerCallRef er, EventRef event,
                 break; }
             case kEventGestureMagnify: {
                 CGFloat amount;
-                if (GetEventParameter(event, kEventParamMagnificationAmount, typeCGFloat, 0,
+                if (GetEventParameter(event, kEventParamMagnificationAmount, 'cgfl', 0,
                             sizeof(amount), 0, &amount) != noErr) {
                     handled_event = false;
                     break;
@@ -1103,7 +1117,6 @@ OSStatus QWidgetPrivate::qt_window_event(EventHandlerCallRef er, EventRef event,
 
         QApplication::sendSpontaneousEvent(widget, &qNGEvent);
     break; }
-#endif // gestures
 
     default:
         handled_event = false;
diff --git a/src/gui/kernel/qwidget_x11.cpp b/src/gui/kernel/qwidget_x11.cpp
index 7461637..0bc9cbc 100644
--- a/src/gui/kernel/qwidget_x11.cpp
+++ b/src/gui/kernel/qwidget_x11.cpp
@@ -527,8 +527,13 @@ void QWidgetPrivate::create_sys(WId window, bool initializeWindow, bool destroyO
         QX11InfoData *xd = &X11->screens[qt_x11_create_desktop_on_screen];
         xinfo.setX11Data(xd);
     } else if (parentXinfo && (parentXinfo->screen() != xinfo.screen()
-                               || parentXinfo->visual() != xinfo.visual()))
+                               || (parentXinfo->visual() != xinfo.visual()
+                                   && !q->inherits("QGLWidget"))))
     {
+        // QGLWidgets have to be excluded here as they have a
+        // specially crafted QX11Info structure which can't be swapped
+        // out with the parent widgets QX11Info. The parent visual,
+        // for instance, might not even be GL capable.
         xinfo = *parentXinfo;
     }
 
diff --git a/src/gui/styles/qgtkstyle.cpp b/src/gui/styles/qgtkstyle.cpp
index 5566cc6..b32c55b 100644
--- a/src/gui/styles/qgtkstyle.cpp
+++ b/src/gui/styles/qgtkstyle.cpp
@@ -1368,7 +1368,7 @@ void QGtkStyle::drawComplexControl(ComplexControl control, const QStyleOptionCom
                     else {
                         gtkCachedPainter.paintFlatBox(gtkEntry, "entry_bg", contentRect,
                                                 option->state & State_Enabled ? GTK_STATE_NORMAL : GTK_STATE_INSENSITIVE,
-                                                GTK_SHADOW_NONE, style, entryPath + QString::number(focus));
+                                                GTK_SHADOW_NONE, gtkCombo->style, entryPath + QString::number(focus));
                     }
 
                     gtkCachedPainter.paintShadow(gtkEntry, comboBox->editable ? "entry" : "frame", frameRect, frameState,
diff --git a/src/gui/text/qtextcontrol.cpp b/src/gui/text/qtextcontrol.cpp
index be79773..f96f66b 100644
--- a/src/gui/text/qtextcontrol.cpp
+++ b/src/gui/text/qtextcontrol.cpp
@@ -1849,8 +1849,8 @@ void QTextControlPrivate::inputMethodEvent(QInputMethodEvent *e)
             || e->preeditString() != cursor.block().layout()->preeditAreaText()
             || e->replacementLength() > 0;
 
+    cursor.beginEditBlock();
     if (isGettingInput) {
-        cursor.beginEditBlock();
         cursor.removeSelectedText();
     }
 
@@ -1876,7 +1876,8 @@ void QTextControlPrivate::inputMethodEvent(QInputMethodEvent *e)
 
     QTextBlock block = cursor.block();
     QTextLayout *layout = block.layout();
-    layout->setPreeditArea(cursor.position() - block.position(), e->preeditString());
+    if (isGettingInput)
+        layout->setPreeditArea(cursor.position() - block.position(), e->preeditString());
     QList<QTextLayout::FormatRange> overrides;
     preeditCursor = e->preeditString().length();
     hideCursor = false;
@@ -1897,9 +1898,7 @@ void QTextControlPrivate::inputMethodEvent(QInputMethodEvent *e)
         }
     }
     layout->setAdditionalFormats(overrides);
-
-    if (isGettingInput)
-        cursor.endEditBlock();
+    cursor.endEditBlock();
 }
 
 QVariant QTextControl::inputMethodQuery(Qt::InputMethodQuery property) const
diff --git a/src/gui/widgets/qabstractslider.cpp b/src/gui/widgets/qabstractslider.cpp
index e0db9c2..988a7e7 100644
--- a/src/gui/widgets/qabstractslider.cpp
+++ b/src/gui/widgets/qabstractslider.cpp
@@ -219,6 +219,10 @@ QAbstractSliderPrivate::QAbstractSliderPrivate()
       blocktracking(false), pressed(false),
       invertedAppearance(false), invertedControls(false),
       orientation(Qt::Horizontal), repeatAction(QAbstractSlider::SliderNoAction)
+#ifdef QT_KEYPAD_NAVIGATION
+      , isAutoRepeating(false)
+      , repeatMultiplier(1)
+#endif
 {
 }
 
@@ -371,6 +375,9 @@ int QAbstractSlider::maximum() const
     abstract sliders provides and typically corresponds to the user
     pressing an arrow key.
 
+    If the property is modified during an auto repeating key event, behavior
+    is undefined.
+
     \sa pageStep
 */
 
@@ -598,10 +605,10 @@ void QAbstractSlider::triggerAction(SliderAction action)
     d->blocktracking = true;
     switch (action) {
     case SliderSingleStepAdd:
-        setSliderPosition(d->overflowSafeAdd(d->singleStep));
+        setSliderPosition(d->overflowSafeAdd(d->effectiveSingleStep()));
         break;
     case SliderSingleStepSub:
-        setSliderPosition(d->overflowSafeAdd(-d->singleStep));
+        setSliderPosition(d->overflowSafeAdd(-d->effectiveSingleStep()));
         break;
     case SliderPageStepAdd:
         setSliderPosition(d->overflowSafeAdd(d->pageStep));
@@ -702,7 +709,7 @@ void QAbstractSlider::wheelEvent(QWheelEvent * e)
         // Calculate how many lines to scroll. Depending on what delta is (and 
         // offset), we might end up with a fraction (e.g. scroll 1.3 lines). We can
         // only scroll whole lines, so we keep the reminder until next event.
-        qreal stepsToScrollF = offset * QApplication::wheelScrollLines() * d->singleStep;
+        qreal stepsToScrollF = offset * QApplication::wheelScrollLines() * d->effectiveSingleStep();
         // Check if wheel changed direction since last event:
         if (d->offset_accumulated != 0 && (offset / d->offset_accumulated) < 0)
             d->offset_accumulated = 0;
@@ -773,6 +780,38 @@ void QAbstractSlider::keyPressEvent(QKeyEvent *ev)
 {
     Q_D(QAbstractSlider);
     SliderAction action = SliderNoAction;
+#ifdef QT_KEYPAD_NAVIGATION
+    if (ev->isAutoRepeat()) {
+        if (d->firstRepeat.isNull())
+            d->firstRepeat = QTime::currentTime();
+        else if (1 == d->repeatMultiplier) {
+            // This is the interval in milli seconds which one key repetition
+            // takes.
+            const int repeatMSecs = d->firstRepeat.msecsTo(QTime::currentTime());
+
+            /**
+             * The time it takes to currently navigate the whole slider.
+             */
+            const qreal currentTimeElapse = (qreal(maximum()) / singleStep()) * repeatMSecs;
+
+            /**
+             * This is an arbitrarily determined constant in msecs that
+             * specifies how long time it should take to navigate from the
+             * start to the end(excluding starting key auto repeat).
+             */
+            const int SliderRepeatElapse = 2500;
+
+            d->repeatMultiplier = currentTimeElapse / SliderRepeatElapse;
+        }
+
+    }
+    else if (!d->firstRepeat.isNull()) {
+        d->firstRepeat = QTime();
+        d->repeatMultiplier = 1;
+    }
+
+#endif
+
     switch (ev->key()) {
 #ifdef QT_KEYPAD_NAVIGATION
         case Qt::Key_Select:
diff --git a/src/gui/widgets/qabstractslider_p.h b/src/gui/widgets/qabstractslider_p.h
index 9324d44..6591981 100644
--- a/src/gui/widgets/qabstractslider_p.h
+++ b/src/gui/widgets/qabstractslider_p.h
@@ -68,7 +68,13 @@ public:
 
     void setSteps(int single, int page);
 
-    int minimum, maximum, singleStep, pageStep, value, position, pressValue;
+    int minimum, maximum, pageStep, value, position, pressValue;
+
+    /**
+     * Call effectiveSingleStep() when changing the slider value.
+     */
+    int singleStep;
+
     float offset_accumulated;
     uint tracking : 1;
     uint blocktracking :1;
@@ -83,8 +89,33 @@ public:
     
 #ifdef QT_KEYPAD_NAVIGATION
     int origValue;
+
+    /**
+     */
+    bool isAutoRepeating;
+
+    /**
+     * When we're auto repeating, we multiply singleStep with this value to
+     * get our effective step.
+     */
+    qreal repeatMultiplier;
+
+    /**
+     * The time of when the first auto repeating key press event occurs.
+     */
+    QTime firstRepeat;
+
 #endif
 
+    inline int effectiveSingleStep() const
+    {
+        return singleStep
+#ifdef QT_KEYPAD_NAVIGATION
+        * repeatMultiplier
+#endif
+        ;
+    }
+
     inline int bound(int val) const { return qMax(minimum, qMin(maximum, val)); }
     inline int overflowSafeAdd(int add) const
     {
diff --git a/src/gui/widgets/qcommandlinkbutton.cpp b/src/gui/widgets/qcommandlinkbutton.cpp
index 9adf280..8f47f25 100644
--- a/src/gui/widgets/qcommandlinkbutton.cpp
+++ b/src/gui/widgets/qcommandlinkbutton.cpp
@@ -326,7 +326,8 @@ int QCommandLinkButton::heightForWidth(int width) const
     Q_D(const QCommandLinkButton);
     int heightWithoutDescription = d->descriptionOffset() + d->bottomMargin();
     // find the width available for the description area
-    return heightWithoutDescription + d->descriptionHeight(width);
+    return qMax(heightWithoutDescription + d->descriptionHeight(width),
+                iconSize().height() + d->topMargin() + d->bottomMargin());
 }
 
 /*! \reimp */
diff --git a/src/gui/widgets/qlinecontrol.cpp b/src/gui/widgets/qlinecontrol.cpp
index 300a2ea..9d533ae 100644
--- a/src/gui/widgets/qlinecontrol.cpp
+++ b/src/gui/widgets/qlinecontrol.cpp
@@ -1666,6 +1666,7 @@ void QLineControl::processKeyEvent(QKeyEvent* event)
     }
 #endif // QT_NO_SHORTCUT
     else {
+        bool handled = false;
 #ifdef Q_WS_MAC
         if (event->key() == Qt::Key_Up || event->key() == Qt::Key_Down) {
             Qt::KeyboardModifiers myModifiers = (event->modifiers() & ~Qt::KeypadModifier);
@@ -1683,6 +1684,7 @@ void QLineControl::processKeyEvent(QKeyEvent* event)
                     event->key() == Qt::Key_Up ? home(0) : end(0);
                 }
             }
+            handled = true;
         }
 #endif
         if (event->modifiers() & Qt::ControlModifier) {
@@ -1715,7 +1717,8 @@ void QLineControl::processKeyEvent(QKeyEvent* event)
             break;
 #endif
             default:
-                unknown = true;
+                if (!handled)
+                    unknown = true;
             }
         } else { // ### check for *no* modifier
             switch (event->key()) {
@@ -1748,7 +1751,8 @@ void QLineControl::processKeyEvent(QKeyEvent* event)
 #endif
 
             default:
-                unknown = true;
+                if (!handled)
+                    unknown = true;
             }
         }
     }
diff --git a/src/gui/widgets/qmenubar.cpp b/src/gui/widgets/qmenubar.cpp
index e50de02..377b39a 100644
--- a/src/gui/widgets/qmenubar.cpp
+++ b/src/gui/widgets/qmenubar.cpp
@@ -736,6 +736,9 @@ void QMenuBarPrivate::init()
         if(wce_menubar)
             q->hide();
     }
+    else {
+        QApplication::setAttribute(Qt::AA_DontUseNativeMenuBar, true);
+    }
 #endif
 #ifdef Q_WS_S60
     symbianCreateMenuBar(q->parentWidget());
diff --git a/src/gui/widgets/qsizegrip.cpp b/src/gui/widgets/qsizegrip.cpp
index cf193dc..6575dbb 100644
--- a/src/gui/widgets/qsizegrip.cpp
+++ b/src/gui/widgets/qsizegrip.cpp
@@ -99,6 +99,7 @@ public:
     int dyMax;
     Qt::Corner m_corner;
     bool gotMousePress;
+    QWidget *tlw;
 #ifdef Q_WS_MAC
     void updateMacSizer(bool hide) const;
 #endif
@@ -113,6 +114,19 @@ public:
         return m_corner == Qt::BottomLeftCorner || m_corner == Qt::TopLeftCorner;
     }
 
+    void updateTopLevelWidget()
+    {
+        Q_Q(QSizeGrip);
+        QWidget *w = qt_sizegrip_topLevelWidget(q);
+        if (tlw == w)
+            return;
+        if (tlw)
+            tlw->removeEventFilter(q);
+        tlw = w;
+        if (tlw)
+            tlw->installEventFilter(q);
+    }
+
     // This slot is invoked by QLayout when the size grip is added to
     // a layout or reparented after the tlw is shown. This re-implementation is basically
     // the same as QWidgetPrivate::_q_showIfNotHidden except that it checks
@@ -121,7 +135,7 @@ public:
     {
         Q_Q(QSizeGrip);
         bool showSizeGrip = !(q->isHidden() && q->testAttribute(Qt::WA_WState_ExplicitShowHide));
-        QWidget *tlw = qt_sizegrip_topLevelWidget(q);
+        updateTopLevelWidget();
         if (tlw && showSizeGrip) {
             Qt::WindowStates sizeGripNotVisibleState = Qt::WindowFullScreen;
 #ifndef Q_WS_MAC
@@ -232,6 +246,7 @@ void QSizeGripPrivate::init()
     Q_Q(QSizeGrip);
     dxMax = 0;
     dyMax = 0;
+    tlw = 0;
     m_corner = q->isLeftToRight() ? Qt::BottomRightCorner : Qt::BottomLeftCorner;
     gotMousePress = false;
 
@@ -240,8 +255,7 @@ void QSizeGripPrivate::init()
                  ? Qt::SizeFDiagCursor : Qt::SizeBDiagCursor);
 #endif
     q->setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed));
-    QWidget *tlw = qt_sizegrip_topLevelWidget(q);
-    tlw->installEventFilter(q);
+    updateTopLevelWidget();
 }
 
 
@@ -524,19 +538,18 @@ void QSizeGrip::setVisible(bool visible)
 /*! \reimp */
 bool QSizeGrip::eventFilter(QObject *o, QEvent *e)
 {
+    Q_D(QSizeGrip);
     if ((isHidden() && testAttribute(Qt::WA_WState_ExplicitShowHide))
-        || e->type() != QEvent::WindowStateChange) {
+        || e->type() != QEvent::WindowStateChange
+		|| o != d->tlw) {
         return QWidget::eventFilter(o, e);
     }
-    QWidget *tlw = qt_sizegrip_topLevelWidget(this);
-    if (o != tlw)
-        return QWidget::eventFilter(o, e);
     Qt::WindowStates sizeGripNotVisibleState = Qt::WindowFullScreen;
 #ifndef Q_WS_MAC
     sizeGripNotVisibleState |= Qt::WindowMaximized;
 #endif
     // Don't show the size grip if the tlw is maximized or in full screen mode.
-    setVisible(!(tlw->windowState() & sizeGripNotVisibleState));
+    setVisible(!(d->tlw->windowState() & sizeGripNotVisibleState));
     setAttribute(Qt::WA_WState_ExplicitShowHide, false);
     return QWidget::eventFilter(o, e);
 }
diff --git a/src/gui/widgets/qtabbar.cpp b/src/gui/widgets/qtabbar.cpp
index 3935c55..8ef6017 100644
--- a/src/gui/widgets/qtabbar.cpp
+++ b/src/gui/widgets/qtabbar.cpp
@@ -1948,7 +1948,8 @@ void QTabBar::changeEvent(QEvent *event)
     Q_D(QTabBar);
     if (event->type() == QEvent::StyleChange) {
         d->elideMode = Qt::TextElideMode(style()->styleHint(QStyle::SH_TabBar_ElideMode, 0, this));
-        d->useScrollButtons = !style()->styleHint(QStyle::SH_TabBar_PreferNoArrows, 0, this);
+        if (!d->useScrollButtonsSetByUser)
+            d->useScrollButtons = !style()->styleHint(QStyle::SH_TabBar_PreferNoArrows, 0, this);
         d->refresh();
     } else if (event->type() == QEvent::FontChange) {
         d->refresh();
@@ -2003,6 +2004,7 @@ bool QTabBar::usesScrollButtons() const
 void QTabBar::setUsesScrollButtons(bool useButtons)
 {
     Q_D(QTabBar);
+    d->useScrollButtonsSetByUser = true;
     if (d->useScrollButtons == useButtons)
         return;
     d->useScrollButtons = useButtons;
diff --git a/src/gui/widgets/qtabbar_p.h b/src/gui/widgets/qtabbar_p.h
index 9f3285b..2e8fb6d 100644
--- a/src/gui/widgets/qtabbar_p.h
+++ b/src/gui/widgets/qtabbar_p.h
@@ -75,7 +75,7 @@ class QTabBarPrivate  : public QWidgetPrivate
 public:
     QTabBarPrivate()
         :currentIndex(-1), pressedIndex(-1), shape(QTabBar::RoundedNorth), layoutDirty(false),
-        drawBase(true), scrollOffset(0), expanding(true), closeButtonOnTabs(false),
+        drawBase(true), scrollOffset(0), useScrollButtonsSetByUser(false) , expanding(true), closeButtonOnTabs(false),
         selectionBehaviorOnRemove(QTabBar::SelectRightTab), paintWithOffsets(true), movable(false),
         dragInProgress(false), documentMode(false), movingTab(0)
 #ifdef Q_WS_MAC
@@ -187,6 +187,7 @@ public:
     QSize iconSize;
     Qt::TextElideMode elideMode;
     bool useScrollButtons;
+    bool useScrollButtonsSetByUser;
 
     bool expanding;
     bool closeButtonOnTabs;
diff --git a/src/gui/widgets/qtoolbararealayout_p.h b/src/gui/widgets/qtoolbararealayout_p.h
index f0ab80c..134e95a 100644
--- a/src/gui/widgets/qtoolbararealayout_p.h
+++ b/src/gui/widgets/qtoolbararealayout_p.h
@@ -118,7 +118,7 @@ public:
 
     void extendSize(Qt::Orientation o, int extent)
     {
-        int newSize = qMax(pick(o, minimumSize()), (preferredSize > 0 ? preferredSize : size) + extent);
+        int newSize = qMax(pick(o, minimumSize()), (preferredSize > 0 ? preferredSize : pick(o, sizeHint())) + extent);
         int sizeh = pick(o, sizeHint());
         if (newSize == sizeh) {
             preferredSize = -1;