Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2: (27 commits)
  Revert "QWorkspace: fix hardcoded min size overwriting the real min size"
  Disable the unified toolbar before entering
  QWorkspace: fix hardcoded min size overwriting the real min size
  Fix tst_moduleqt47::accidentalImport
  tst_qcompleter: Fix the QTBUG_14292_filesystem test on X11
  tst_qcompleter.cpp: fix test on mac.
  Fixed autotest that was missing focus on Windows
  QGraphicsLayoutItem - user set sizes should always override, even if there's a constraint
  QGridLayoutEngine - Rework height-for-width support so that row/col spanning works
  Revert "Revert "Fix (implement!) hfw/wfh in QGridLayoutEngine""
  Fixed statement about const_iterator and some whitespace fixes.
  Adjust the parent index for the itemsMoved call.
  Correctly handle both 16bit and 32bit live pixmaps in meego graphics system.
  Correctly remove the egl alpha surface flags in meego graphics system.
  Proper dither & proper alpha checking.
  In meego graphics system, use always 16bit textures.
  QCompleter: do not auto complete when directory is changed.
  tst_qcompleter: Add a test for QFileSystemModel
  Doc: adjusting the search field width
  Doc - remove disclaimer
  ...

32 files changed, 1063 insertions, 163 deletions

diff --git a/doc/src/examples/webkit-bridge-imageanalyzer.qdoc b/doc/src/examples/webkit-bridge-imageanalyzer.qdoc
index efc5623..b8c42c6 100644
--- a/doc/src/examples/webkit-bridge-imageanalyzer.qdoc
+++ b/doc/src/examples/webkit-bridge-imageanalyzer.qdoc
@@ -37,6 +37,9 @@ user interface, displaying web content written in HTML/JavaScript. The
 application uses QtConcurrent to distribute its work across as many CPU cores as
 are available from the system, so it can process each image in parallel.
 
+For the full reference documentation of QtWebKit hybrid development, see 
+\l{qtwebkit-bridge.html}{The QtWebKit Bridge}.
+
 Initially, you will see a user interface with an empty list of images. Clicking
 on some of the images in the lower pane below adds them to the list view above,
 as shown in the screenshot below.
@@ -54,8 +57,8 @@ each image are shown.
 
     \image webkit-imageanalyzer-complete.png
 
-The MainWindow is defined in C++, and creates a \c QNetworkCache and a
-\c QWebView, and tells the \c QWebView to load the starting page, providing us
+The MainWindow is defined in C++, and creates a \l QNetworkDiskCache and a
+\l QWebView, and tells the \l QWebView to load the starting page, providing us
 with a user interface for the client.
 
   \snippet examples/webkit/imageanalyzer/mainwindow.cpp MainWindow - constructor
@@ -67,8 +70,8 @@ likely be retrieved from the network rather than from resources.
 
 We wish to initialize an object reference in the JavaScript web page to point
 to our \tt ImageAnalyzer before any other scripts are run. To do this, we
-connect the \c javaScriptWindowObjectCleared() signal to a slot which does the
-object creation and handoff to JavaScript.
+connect the \l{QWebFrame::}{javaScriptWindowObjectCleared()} signal to a slot
+which does the object creation and handoff to JavaScript.
 
   \snippet examples/webkit/imageanalyzer/mainwindow.cpp MainWindow - addJSObject
 
@@ -94,14 +97,15 @@ When the user clicks the \bold {Analyze} button, \c analyzeImages() is called,
 another regular JavaScript method, shown below.
 Notice it assumes the \c imageAnalyzer object is already defined and initialized
 in JavaScript space, but we guaranteed that by connecting our setup slot to the
-appropriate signal, \c javaScriptWindowObjectCleared().
+appropriate signal, \l{QWebFrame::}{javaScriptWindowObjectCleared()}.
 
     \snippet examples/webkit/imageanalyzer/resources/index.html analyzeImages
 
 The only methods on \c ImageAnalyzer that we can or do call from JavaScript are
-those which are exposed through Qt's MetaObject system: property getter/setter
-methods,
-\c public \c slots, \c signals, and other \c Q_INVOKABLE functions.
+those which are exposed through \{The Meta-Object System}{Qt's MetaObject}
+system: \l{The Property System}{property} getter/setter methods,
+\c public \l {Signals & Slots}{signals and slots}, and other 
+\l{Q_INVOKABLE}{Q_INVOKABLE} functions.
 
 \snippet examples/webkit/imageanalyzer/imageanalyzer.h ImageAnalyzer - public interface
 \dots
@@ -138,13 +142,13 @@ will load them into a QImage when the data is ready.
 \snippet examples/webkit/imageanalyzer/imageanalyzer.cpp ImageAnalyzer - handleReply
 
 After the images are loaded, they are queued up in preparation to be
-sent in a batch for analysis to a \c QFutureWatcher, which will distribute the
+sent in a batch for analysis to a \l QFutureWatcher, which will distribute the
 processing across multiple threads and cores, depending on how many are available.
 
 \snippet examples/webkit/imageanalyzer/imageanalyzer.cpp ImageAnalyzer - queueImage
 
 The function that gets performed on each image is \c averageRGB(),
-as specified in argument 2 to the \c QtConcurrent::mapped() function.
+as specified in argument 2 to the \l{QtConcurrent::mapped()} function.
 Notice it repeats the same calculations 100 times on each pixel to keep the CPU
 very busy. This is done only for the purposes of the demo so that the analysis
 takes a noticeable time to complete.
diff --git a/doc/src/frameworks-technologies/phonon.qdoc b/doc/src/frameworks-technologies/phonon.qdoc
index 83afb91..9620136 100644
--- a/doc/src/frameworks-technologies/phonon.qdoc
+++ b/doc/src/frameworks-technologies/phonon.qdoc
@@ -524,24 +524,5 @@
     the QtOpenGL shared library. If this is not what you want, it is
     possible to configure Qt without OpenGL support. In that case, you
     need to run \c configure with the \c -no-opengl option.
-
-    \section1 Work in Progress
-
-    Phonon and its Qt backends, though fully functional for
-    multimedia playback, are still under development. Functionality to
-    come is the possibility to capture media and more processors for
-    both music and video files.
-
-    Another important consideration is to implement support for
-    storing media to files; i.e., not playing back media directly.
-
-    We also hope in the future to be able to support direct
-    manipulation of media streams. This will give the programmer more
-    freedom to manipulate streams than just through processors.
-
-    Currently, the multimedia framework supports one input source. It will be
-    possible to include several sources. This is useful in, for example, audio
-    mixer applications where several audio sources can be sent, processed and
-    output as a single audio stream.
 */
 
diff --git a/doc/src/images/webkit-imageanalyzer-screenshot.png b/doc/src/images/webkit-imageanalyzer-screenshot.png
index 987f8a2..c96371a 100644
--- a/doc/src/images/webkit-imageanalyzer-screenshot.png
+++ b/doc/src/images/webkit-imageanalyzer-screenshot.png
diff --git a/doc/src/porting/qt4-designer.qdoc b/doc/src/porting/qt4-designer.qdoc
index fff3e89..ea5147a 100644
--- a/doc/src/porting/qt4-designer.qdoc
+++ b/doc/src/porting/qt4-designer.qdoc
@@ -36,18 +36,14 @@
 
     \QD has been completely re-written based on our experience with
     the previous versions of the product for Qt 3. One of the main new
-    ideas behind this new version is to release the application as a
+    ideas is to release the application as a
     collection of interchangeable components that include the property
     editor, the widget box, and other useful tools for creating
     graphical user interfaces with Qt. These components can either be
     used together in the \QD application, or independently integrated
     into other systems.  As a result, certain features such as the
     project editor and code editor have been removed from the version
-    included with this release.
-
-    The current version of \QD is near feature complete and can be used for
-    many tasks. However, it is still under continuous development. This
-    document will explain what is already in place.
+    included with release 4.
 
     See also the \l{Qt Designer Manual}.
 
@@ -128,7 +124,7 @@
     \row
     \i \bold{Widget Editing Mode}
 
-    The new \QD allows widgets to be dropped into existing layouts on
+    \QD now allows widgets to be dropped into existing layouts on
     the form. Previously, it was necessary to break layouts in order
     to add new widgets to them.
 
@@ -189,7 +185,7 @@
     \row
     \i \bold{The Resource Editor}
 
-    The new \QD fully supports The Qt Resource System, and provide the
+    \QD now fully supports The Qt Resource System, and provides the
     Resource Editor to help designers and developers manage the
     resources that are needed by their applications.
 
@@ -210,8 +206,8 @@
     \i \inlineimage designer-action-editor.png
     \i \bold{The Action Editor}
 
-    With the release of Qt 4.1, \QD introduces the Action Editor
-    simplifying the management of actions when creating main window
+    With the release of Qt 4.1, \QD the Action Editor was introduced
+    to simplify the management of actions when creating main window
     applications.
 
     When creating a main window, you can add a menu bar and toolbars
@@ -261,7 +257,7 @@
 
     \section1 Run-Time Support for Forms
 
-    With the Qt 4.1 release, the new QtUiTools module is introduced to
+    With the Qt 4.1 release, the new QtUiTools module was introduced to
     provide classes handling forms created with \QD.
 
     Currently the module only contains the QUiLoader class.
diff --git a/doc/src/template/style/style.css b/doc/src/template/style/style.css
index ec0202a..12d297d 100755
--- a/doc/src/template/style/style.css
+++ b/doc/src/template/style/style.css
@@ -650,7 +650,7 @@
 	  margin-top: 5px;
 	  _margin: 0 0 0 -20px;
 	  padding: 10px;
-	  width: 220px;
+	  width: 30%;
 	  _width: 196px;
 	  height: 250px;
 	  overflow: auto;
diff --git a/src/corelib/kernel/qabstractitemmodel.cpp b/src/corelib/kernel/qabstractitemmodel.cpp
index 6e37aee..16b14730 100644
--- a/src/corelib/kernel/qabstractitemmodel.cpp
+++ b/src/corelib/kernel/qabstractitemmodel.cpp
@@ -2636,8 +2636,6 @@ void QAbstractItemModel::endMoveRows()
     QAbstractItemModelPrivate::Change insertChange = d->changes.pop();
     QAbstractItemModelPrivate::Change removeChange = d->changes.pop();
 
-    d->itemsMoved(removeChange.parent, removeChange.first, removeChange.last, insertChange.parent, insertChange.first, Qt::Vertical);
-
     QModelIndex adjustedSource = removeChange.parent;
     QModelIndex adjustedDestination = insertChange.parent;
 
@@ -2648,6 +2646,8 @@ void QAbstractItemModel::endMoveRows()
     if (removeChange.needsAdjust)
       adjustedSource = createIndex(adjustedSource.row() + numMoved, adjustedSource.column(), adjustedSource.internalPointer());
 
+    d->itemsMoved(adjustedSource, removeChange.first, removeChange.last, adjustedDestination, insertChange.first, Qt::Vertical);
+
     emit rowsMoved(adjustedSource, removeChange.first, removeChange.last, adjustedDestination, insertChange.first);
     emit layoutChanged();
 }
@@ -2860,8 +2860,6 @@ void QAbstractItemModel::endMoveColumns()
     QAbstractItemModelPrivate::Change insertChange = d->changes.pop();
     QAbstractItemModelPrivate::Change removeChange = d->changes.pop();
 
-    d->itemsMoved(removeChange.parent, removeChange.first, removeChange.last, insertChange.parent, insertChange.first, Qt::Horizontal);
-
     QModelIndex adjustedSource = removeChange.parent;
     QModelIndex adjustedDestination = insertChange.parent;
 
@@ -2872,6 +2870,8 @@ void QAbstractItemModel::endMoveColumns()
     if (removeChange.needsAdjust)
       adjustedSource = createIndex(adjustedSource.row(), adjustedSource.column() + numMoved, adjustedSource.internalPointer());
 
+    d->itemsMoved(adjustedSource, removeChange.first, removeChange.last, adjustedDestination, insertChange.first, Qt::Horizontal);
+
     emit columnsMoved(adjustedSource, removeChange.first, removeChange.last, adjustedDestination, insertChange.first);
     emit layoutChanged();
 }
diff --git a/src/corelib/tools/qdatetime.cpp b/src/corelib/tools/qdatetime.cpp
index ab7530d..c252e64 100644
--- a/src/corelib/tools/qdatetime.cpp
+++ b/src/corelib/tools/qdatetime.cpp
@@ -1630,6 +1630,7 @@ QString QTime::toString(Qt::DateFormat format) const
     \endtable
 
     If the datetime is invalid, an empty string will be returned.
+    If \a format is empty, the default format "hh:mm:ss" is used.
 
     \sa QDate::toString() QDateTime::toString()
 */
diff --git a/src/corelib/tools/qlinkedlist.cpp b/src/corelib/tools/qlinkedlist.cpp
index 909d940..7213c6e 100644
--- a/src/corelib/tools/qlinkedlist.cpp
+++ b/src/corelib/tools/qlinkedlist.cpp
@@ -254,7 +254,7 @@ QLinkedListData QLinkedListData::shared_null = {
     \sa insert()
 */
 
-/*! 
+/*!
     \fn bool QLinkedList::removeOne(const T &value)
     \since 4.4
 
@@ -830,7 +830,7 @@ QLinkedListData QLinkedListData::shared_null = {
 
     QLinkedList\<T\>::const_iterator allows you to iterate over a
     QLinkedList\<T\>. If you want modify the QLinkedList as you iterate
-    over it, you must use QLinkedList::const_iterator instead. It is
+    over it, you must use QLinkedList::iterator instead. It is
     generally good practice to use QLinkedList::const_iterator on a
     non-const QLinkedList as well, unless you need to change the
     QLinkedList through the iterator. Const iterators are slightly
diff --git a/src/corelib/tools/qlist.cpp b/src/corelib/tools/qlist.cpp
index 6cc6fc1..9ba3768 100644
--- a/src/corelib/tools/qlist.cpp
+++ b/src/corelib/tools/qlist.cpp
@@ -936,7 +936,7 @@ void **QListData::erase(void **xi)
     This function requires the value type to have an implementation of
     \c operator==().
 
-    Note that QList uses 0-based indexes, just like C++ arrays. Negative 
+    Note that QList uses 0-based indexes, just like C++ arrays. Negative
     indexes are not supported with the exception of the value mentioned
     above.
 
diff --git a/src/corelib/tools/qsharedpointer.cpp b/src/corelib/tools/qsharedpointer.cpp
index 5fac960..0310baa 100644
--- a/src/corelib/tools/qsharedpointer.cpp
+++ b/src/corelib/tools/qsharedpointer.cpp
@@ -395,7 +395,7 @@
 
     \section1 Tracking QObject
 
-    QWeakPointer can be used to track deletion classes derives from QObject,
+    QWeakPointer can be used to track deletion classes that derive from QObject,
     even if they are not managed by QSharedPointer. When used in that role,
     QWeakPointer replaces the older QPointer in all use-cases. QWeakPointer
     is also more efficient than QPointer, so it should be preferred in all
@@ -1163,7 +1163,7 @@
     \since 4.6
 
     \brief The qSharedPointerObjectCast function is for casting a shared pointer.
-    
+
     Returns a shared pointer to the pointer held by \a other, using a
     \l qobject_cast() to type \tt X to obtain an internal pointer of the
     appropriate type. If the \tt qobject_cast fails, the object
@@ -1432,7 +1432,7 @@ void QtSharedPointer::internalSafetyCheckAdd2(const void *d_ptr, const volatile
     Q_ASSERT(!kp->dPointers.contains(d_ptr));
 
     //qDebug("Adding d=%p value=%p", d_ptr, ptr);
-    
+
     const void *other_d_ptr = kp->dataPointers.value(ptr, 0);
     if (other_d_ptr) {
 #  ifdef BACKTRACE_SUPPORTED
diff --git a/src/gui/graphicsview/qgraphicslayoutitem.cpp b/src/gui/graphicsview/qgraphicslayoutitem.cpp
index ad4b2b5..e43f7fa 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>
 
@@ -259,6 +260,52 @@ 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/qgraphicswidget.cpp b/src/gui/graphicsview/qgraphicswidget.cpp
index 1bfe266..4a733be 100644
--- a/src/gui/graphicsview/qgraphicswidget.cpp
+++ b/src/gui/graphicsview/qgraphicswidget.cpp
@@ -750,6 +750,22 @@ QSizeF QGraphicsWidget::sizeHint(Qt::SizeHint which, const QSizeF &constraint) c
 /*!
     \property QGraphicsWidget::layout
     \brief The layout of the widget
+
+    Any existing layout manager is deleted before the new layout is assigned. If
+     \a layout is 0, the widget is left without a layout. Existing subwidgets'
+    geometries will remain unaffected.
+
+    QGraphicsWidget takes ownership of \a layout.
+
+    All widgets that are currently managed by \a layout or all of its
+    sublayouts, are automatically reparented to this item. The layout is then
+    invalidated, and the child widget geometries are adjusted according to
+    this item's geometry() and contentsMargins(). Children who are not
+    explicitly managed by \a layout remain unaffected by the layout after
+    it has been assigned to this widget.
+
+    If no layout is currently managing this widget, layout() will return 0.
+
 */
 
 /*!
diff --git a/src/gui/graphicsview/qgridlayoutengine.cpp b/src/gui/graphicsview/qgridlayoutengine.cpp
index ae5bf90..e486b4d 100644
--- a/src/gui/graphicsview/qgridlayoutengine.cpp
+++ b/src/gui/graphicsview/qgridlayoutengine.cpp
@@ -545,6 +545,24 @@ 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 +631,17 @@ QRectF QGridLayoutItem::geometryWithin(qreal x, qreal y, qreal width, qreal heig
         qreal cellWidth = width;
         qreal cellHeight = height;
 
-        QSizeF size = effectiveMaxSize().boundedTo(QSizeF(cellWidth, cellHeight));
+
+        QSizeF size = effectiveMaxSize(QSizeF(-1,-1));
+        if (hasDynamicConstraint()) {
+            if (dynamicConstraintOrientation() == Qt::Vertical) {
+               if (size.width() > cellWidth)
+                   size = effectiveMaxSize(QSizeF(cellWidth, -1));
+            } else if(size.height() > cellHeight) {
+                size = effectiveMaxSize(QSizeF(-1, cellHeight));
+            }
+        }
+        size = size.boundedTo(QSizeF(cellWidth, cellHeight));
         width = size.width();
         height = size.height();
 
@@ -675,13 +703,13 @@ 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 +717,7 @@ QSizeF QGridLayoutItem::effectiveMaxSize() const
     }
 
     if (!size.isValid()) {
-        QSizeF maxSize = layoutItem()->effectiveSizeHint(Qt::MaximumSize);
+        QSizeF maxSize = layoutItem()->effectiveSizeHint(Qt::MaximumSize, size);
         if (size.width() == -1)
             size.setWidth(maxSize.width());
         if (size.height() == -1)
@@ -1010,6 +1038,7 @@ 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)
@@ -1074,19 +1103,78 @@ 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);
+    QGridLayoutBox sizehint_totalBoxes[NOrientations];
+
+    if(rowCount() < 1 || columnCount() < 1 || !hasDynamicConstraint()) {
+        //No items with height for width, so it doesn't matter which order we do these in
+        if(q_cachedDataForStyleInfo != styleInfo) {
+            ensureColumnAndRowData(&q_columnData, &sizehint_totalBoxes[Hor], styleInfo, NULL, NULL, Qt::Horizontal);
+            ensureColumnAndRowData(&q_rowData, &sizehint_totalBoxes[Ver], styleInfo, NULL, NULL, Qt::Vertical);
+        } else {
+            sizehint_totalBoxes[Hor] = q_totalBoxes[Hor];
+            sizehint_totalBoxes[Ver] = q_totalBoxes[Ver];
+        }
+    } else if(constraintOrientation() == Qt::Vertical) {
+        //We have items whose width depends on their height
+        if(q_cachedDataForStyleInfo != styleInfo)
+            ensureColumnAndRowData(&q_columnData, &sizehint_totalBoxes[Hor], styleInfo, NULL, NULL, Qt::Horizontal);
+        else
+            sizehint_totalBoxes[Hor] = q_totalBoxes[Hor];
+        QVector<qreal> sizehint_xx;
+        QVector<qreal> sizehint_widths;
+
+        sizehint_xx.resize(columnCount());
+        sizehint_widths.resize(columnCount());
+        qreal width = constraint.width();
+        if(width < 0) {
+            /* It's not obvious what the behaviour should be. */
+/*            if(which == Qt::MaximumSize)
+                width = sizehint_totalBoxes[Hor].q_maximumSize;
+            else if(which == Qt::MinimumSize)
+                width = sizehint_totalBoxes[Hor].q_minimumSize;
+            else*/
+                width = sizehint_totalBoxes[Hor].q_preferredSize;
+        }
+        //Calculate column widths and positions, and put results in q_xx.data() and q_widths.data() so that we can use this information as
+        //constraints to find the row heights
+        q_columnData.calculateGeometries(0, columnCount(), width, sizehint_xx.data(), sizehint_widths.data(),
+                0, sizehint_totalBoxes[Hor]);
+        ensureColumnAndRowData(&q_rowData, &sizehint_totalBoxes[Ver], styleInfo, sizehint_xx.data(), sizehint_widths.data(), Qt::Vertical);
+    } else {
+        //We have items whose height depends on their width
+        ensureColumnAndRowData(&q_rowData, &sizehint_totalBoxes[Ver], styleInfo, NULL, NULL, Qt::Vertical);
+        QVector<qreal> sizehint_yy;
+        QVector<qreal> sizehint_heights;
+
+        sizehint_yy.resize(rowCount());
+        sizehint_heights.resize(rowCount());
+        qreal height = constraint.height();
+        if(height < 0) {
+/*            if(which == Qt::MaximumSize)
+                height = sizehint_totalBoxes[Ver].q_maximumSize;
+            else if(which == Qt::MinimumSize)
+                height = sizehint_totalBoxes[Ver].q_minimumSize;
+            else*/
+                height = sizehint_totalBoxes[Ver].q_preferredSize;
+        }
+        //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data() so that we can use this information as
+        //constraints to find the column widths
+        q_rowData.calculateGeometries(0, rowCount(), height, sizehint_yy.data(), sizehint_heights.data(),
+                0, sizehint_totalBoxes[Ver]);
+        ensureColumnAndRowData(&q_columnData, &sizehint_totalBoxes[Hor], styleInfo, sizehint_yy.data(), sizehint_heights.data(), Qt::Vertical);
+    }
 
     switch (which) {
     case Qt::MinimumSize:
-        return QSizeF(q_totalBoxes[Hor].q_minimumSize, q_totalBoxes[Ver].q_minimumSize);
+        return QSizeF(sizehint_totalBoxes[Hor].q_minimumSize, sizehint_totalBoxes[Ver].q_minimumSize);
     case Qt::PreferredSize:
-        return QSizeF(q_totalBoxes[Hor].q_preferredSize, q_totalBoxes[Ver].q_preferredSize);
+        return QSizeF(sizehint_totalBoxes[Hor].q_preferredSize, sizehint_totalBoxes[Ver].q_preferredSize);
     case Qt::MaximumSize:
-        return QSizeF(q_totalBoxes[Hor].q_maximumSize, q_totalBoxes[Ver].q_maximumSize);
+        return QSizeF(sizehint_totalBoxes[Hor].q_maximumSize, sizehint_totalBoxes[Ver].q_maximumSize);
     case Qt::MinimumDescent:
-        return QSizeF(-1.0, q_totalBoxes[Hor].q_minimumDescent);    // ### doesn't work
+        return QSizeF(-1.0, sizehint_totalBoxes[Hor].q_minimumDescent);    // ### doesn't work
     default:
         break;
     }
@@ -1262,6 +1350,7 @@ void QGridLayoutEngine::insertOrRemoveRows(int row, int delta, Qt::Orientation o
 }
 
 void QGridLayoutEngine::fillRowData(QGridLayoutRowData *rowData, const QLayoutStyleInfo &styleInfo,
+                                    qreal *colPositions, qreal *colSizes,
                                     Qt::Orientation orientation) const
 {
     const int ButtonMask = QSizePolicy::ButtonBox | QSizePolicy::PushButton;
@@ -1375,7 +1464,21 @@ void QGridLayoutEngine::fillRowData(QGridLayoutRowData *rowData, const QLayoutSt
                         box = &multiCell.q_box;
                         multiCell.q_stretch = itemStretch;
                     }
-                    box->combine(item->box(orientation));
+                    // Items with constraints need to be passed the constraint
+                    if (colSizes && colPositions && item->hasDynamicConstraint() && orientation == item->dynamicConstraintOrientation()) {
+                        /* Get the width of the item by summing up the widths of the columns that it spans.
+                         * We need to have already calculated the widths of the columns by calling
+                         * q_columns->calculateGeometries() before hand and passing the value in the colSizes
+                         * and colPositions parameters.
+                         * The variable name is still colSizes even when it actually has the row sizes
+                         */
+                        qreal length = colSizes[item->lastColumn(orientation)];
+                        if (item->columnSpan(orientation) != 1)
+                            length += colPositions[item->lastColumn(orientation)] - colPositions[item->firstColumn(orientation)];
+                        box->combine(item->box(orientation, length));
+                    } else {
+                        box->combine(item->box(orientation));
+                    }
 
                     if (effectiveRowSpan == 1) {
                         QSizePolicy::ControlTypes controls = item->controlTypes(top);
@@ -1512,44 +1615,99 @@ void QGridLayoutEngine::ensureEffectiveFirstAndLastRows() const
     }
 }
 
-void QGridLayoutEngine::ensureColumnAndRowData(const QLayoutStyleInfo &styleInfo) const
+void QGridLayoutEngine::ensureColumnAndRowData(QGridLayoutRowData *rowData, QGridLayoutBox *totalBox,
+                                            const QLayoutStyleInfo &styleInfo,
+                                            qreal *colPositions, qreal *colSizes,
+                                            Qt::Orientation orientation) const
 {
-    if (q_cachedDataForStyleInfo == styleInfo)
-        return;
-
-    q_columnData.reset(columnCount());
-    q_rowData.reset(rowCount());
-
-    fillRowData(&q_columnData, styleInfo, Qt::Horizontal);
-    fillRowData(&q_rowData, styleInfo, Qt::Vertical);
+    rowData->reset(rowCount(orientation));
+    fillRowData(rowData, styleInfo, colPositions, colSizes, orientation);
+    rowData->distributeMultiCells();
+    *totalBox = rowData->totalBox(0, rowCount(orientation));
+        //We have items whose width depends on their height
+}
 
-    q_columnData.distributeMultiCells();
-    q_rowData.distributeMultiCells();
+/**
+   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;
+}
 
-    q_totalBoxes[Hor] = q_columnData.totalBox(0, columnCount());
-    q_totalBoxes[Ver] = q_rowData.totalBox(0, rowCount());
+bool QGridLayoutEngine::hasDynamicConstraint() const
+{
+    if (!ensureDynamicConstraint())
+        return false;
+    return q_cachedConstraintOrientation != NoConstraint;
+}
 
-    q_cachedDataForStyleInfo = styleInfo;
+/*
+ * 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
 {
-    ensureColumnAndRowData(styleInfo);
-    if (q_cachedSize == size)
+    if (q_cachedDataForStyleInfo == styleInfo && q_cachedSize == size)
         return;
 
+    q_cachedDataForStyleInfo = styleInfo;
+    q_cachedSize = size;
+
     q_xx.resize(columnCount());
-    q_yy.resize(rowCount());
     q_widths.resize(columnCount());
+    q_yy.resize(rowCount());
     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]);
 
-    q_cachedSize = size;
+    if(constraintOrientation() != Qt::Horizontal) {
+        //We might have items whose width depends on their height
+        ensureColumnAndRowData(&q_columnData, &q_totalBoxes[Hor], styleInfo, NULL, NULL, Qt::Horizontal);
+        //Calculate column widths and positions, and put results in q_xx.data() and q_widths.data() so that we can use this information as
+        //constraints to find the row heights
+        q_columnData.calculateGeometries(0, columnCount(), size.width(), q_xx.data(), q_widths.data(),
+                0, q_totalBoxes[Hor]);
+        ensureColumnAndRowData(&q_rowData, &q_totalBoxes[Ver], styleInfo, q_xx.data(), q_widths.data(), Qt::Vertical);
+        //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data()
+        q_rowData.calculateGeometries(0, rowCount(), size.height(), q_yy.data(), q_heights.data(),
+                q_descents.data(), q_totalBoxes[Ver]);
+    } else {
+        //We have items whose height depends on their width
+        ensureColumnAndRowData(&q_rowData, &q_totalBoxes[Ver], styleInfo, NULL, NULL, Qt::Vertical);
+        //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data() so that we can use this information as
+        //constraints to find the column widths
+        q_rowData.calculateGeometries(0, rowCount(), size.height(), q_yy.data(), q_heights.data(),
+                q_descents.data(), q_totalBoxes[Ver]);
+        ensureColumnAndRowData(&q_columnData, &q_totalBoxes[Hor], styleInfo, q_yy.data(), q_heights.data(), Qt::Horizontal);
+        //Calculate row heights and positions, and put results in q_yy.data() and q_heights.data()
+        q_columnData.calculateGeometries(0, columnCount(), size.width(), q_xx.data(), q_widths.data(),
+                0, q_totalBoxes[Hor]);
+    }
 }
 
 QT_END_NAMESPACE
diff --git a/src/gui/graphicsview/qgridlayoutengine_p.h b/src/gui/graphicsview/qgridlayoutengine_p.h
index 9ac9a8e..02c74b0 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,   // Width depends on the height
+    VerticalConstraint,     // Height depends on the width
+    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;
@@ -372,6 +384,14 @@ 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);
@@ -390,9 +410,14 @@ private:
     void setItemAt(int row, int column, QGridLayoutItem *item);
     void insertOrRemoveRows(int row, int delta, Qt::Orientation orientation = Qt::Vertical);
     void fillRowData(QGridLayoutRowData *rowData, const QLayoutStyleInfo &styleInfo,
-                     Qt::Orientation orientation = Qt::Vertical) const;
+                                    qreal *colPositions, qreal *colSizes,
+                                    Qt::Orientation orientation = Qt::Vertical) const;
     void ensureEffectiveFirstAndLastRows() const;
-    void ensureColumnAndRowData(const QLayoutStyleInfo &styleInfo) const;
+    void ensureColumnAndRowData(QGridLayoutRowData *rowData, QGridLayoutBox *totalBox,
+                                            const QLayoutStyleInfo &styleInfo,
+                                            qreal *colPositions, qreal *colSizes,
+                                            Qt::Orientation orientation) const;
+
     void ensureGeometries(const QLayoutStyleInfo &styleInfo, const QSizeF &size) const;
 
     // User input
@@ -405,6 +430,7 @@ 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/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index f7c795e..9b44f15 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -68,6 +68,7 @@
 # include "qt_cocoa_helpers_mac_p.h"
 # include "qmainwindow.h"
 # include "qtoolbar.h"
+# include <private/qmainwindowlayout_p.h>
 #endif
 #if defined(Q_WS_QWS)
 # include "qwsdisplay_qws.h"
@@ -3002,6 +3003,15 @@ bool QWidget::isFullScreen() const
 */
 void QWidget::showFullScreen()
 {
+#ifdef Q_WS_MAC
+    // If the unified toolbar is enabled, we have to disable it before going fullscreen.
+    QMainWindow *mainWindow = qobject_cast<QMainWindow*>(this);
+    if (mainWindow && mainWindow->unifiedTitleAndToolBarOnMac()) {
+        mainWindow->setUnifiedTitleAndToolBarOnMac(false);
+        QMainWindowLayout *mainLayout = qobject_cast<QMainWindowLayout*>(mainWindow->layout());
+        mainLayout->activateUnifiedToolbarAfterFullScreen = true;
+    }
+#endif // Q_WS_MAC
     ensurePolished();
 #ifdef QT3_SUPPORT
     if (parent())
@@ -3034,6 +3044,18 @@ void QWidget::showMaximized()
 
     setWindowState((windowState() & ~(Qt::WindowMinimized | Qt::WindowFullScreen))
                    | Qt::WindowMaximized);
+#ifdef Q_WS_MAC
+    // If the unified toolbar was enabled before going fullscreen, we have to enable it back.
+    QMainWindow *mainWindow = qobject_cast<QMainWindow*>(this);
+    if (mainWindow)
+    {
+        QMainWindowLayout *mainLayout = qobject_cast<QMainWindowLayout*>(mainWindow->layout());
+        if (mainLayout->activateUnifiedToolbarAfterFullScreen) {
+            mainWindow->setUnifiedTitleAndToolBarOnMac(true);
+            mainLayout->activateUnifiedToolbarAfterFullScreen = false;
+        }
+    }
+#endif // Q_WS_MAC
     show();
 }
 
@@ -3055,6 +3077,18 @@ void QWidget::showNormal()
     setWindowState(windowState() & ~(Qt::WindowMinimized
                                      | Qt::WindowMaximized
                                      | Qt::WindowFullScreen));
+#ifdef Q_WS_MAC
+    // If the unified toolbar was enabled before going fullscreen, we have to enable it back.
+    QMainWindow *mainWindow = qobject_cast<QMainWindow*>(this);
+    if (mainWindow)
+    {
+        QMainWindowLayout *mainLayout = qobject_cast<QMainWindowLayout*>(mainWindow->layout());
+        if (mainLayout->activateUnifiedToolbarAfterFullScreen) {
+            mainWindow->setUnifiedTitleAndToolBarOnMac(true);
+            mainLayout->activateUnifiedToolbarAfterFullScreen = false;
+        }
+    }
+#endif // Q_WS_MAC
     show();
 }
 
diff --git a/src/gui/util/qcompleter.cpp b/src/gui/util/qcompleter.cpp
index e718212..bcd601b 100644
--- a/src/gui/util/qcompleter.cpp
+++ b/src/gui/util/qcompleter.cpp
@@ -782,7 +782,8 @@ QMatchData QUnsortedModelEngine::filter(const QString& part, const QModelIndex&
 ///////////////////////////////////////////////////////////////////////////////
 QCompleterPrivate::QCompleterPrivate()
 : widget(0), proxy(0), popup(0), cs(Qt::CaseSensitive), role(Qt::EditRole), column(0),
-  maxVisibleItems(7), sorting(QCompleter::UnsortedModel), wrap(true), eatFocusOut(true)
+  maxVisibleItems(7), sorting(QCompleter::UnsortedModel), wrap(true), eatFocusOut(true),
+  hiddenBecauseNoMatch(false)
 {
 }
 
@@ -921,12 +922,14 @@ void QCompleterPrivate::showPopup(const QRect& rect)
 void QCompleterPrivate::_q_fileSystemModelDirectoryLoaded(const QString &path)
 {
     Q_Q(QCompleter);
-#ifndef QT_NO_LINEEDIT
-    QLineEdit *lineEdit = qobject_cast<QLineEdit *>(widget);
-    //the path given by QFileSystemModel does not end with /
-    if (lineEdit && !lineEdit->text().isEmpty() && !q->completionPrefix().isEmpty() && q->completionPrefix() != path + QLatin1Char('/'))
+    // Slot called when QFileSystemModel has finished loading.
+    // If we hide the popup because there was no match because the model was not loaded yet,
+    // we re-start the completion when we get the results
+    if (hiddenBecauseNoMatch
+        && prefix.startsWith(path) && prefix != (path + '/')
+        && widget) {
         q->complete();
-#endif
+    }
 }
 
 /*!
@@ -1200,6 +1203,7 @@ bool QCompleter::eventFilter(QObject *o, QEvent *e)
     Q_D(QCompleter);
 
     if (d->eatFocusOut && o == d->widget && e->type() == QEvent::FocusOut) {
+        d->hiddenBecauseNoMatch = false;
         if (d->popup && d->popup->isVisible())
             return true;
     }
@@ -1378,6 +1382,7 @@ void QCompleter::complete(const QRect& rect)
 {
     Q_D(QCompleter);
     QModelIndex idx = d->proxy->currentIndex(false);
+    d->hiddenBecauseNoMatch = false;
     if (d->mode == QCompleter::InlineCompletion) {
         if (idx.isValid())
             d->_q_complete(idx, true);
@@ -1389,6 +1394,7 @@ void QCompleter::complete(const QRect& rect)
         || (d->mode == QCompleter::UnfilteredPopupCompletion && d->proxy->rowCount() == 0)) {
         if (d->popup)
             d->popup->hide(); // no suggestion, hide
+        d->hiddenBecauseNoMatch = true;
         return;
     }
 
diff --git a/src/gui/util/qcompleter_p.h b/src/gui/util/qcompleter_p.h
index 8f00793..19b76e5 100644
--- a/src/gui/util/qcompleter_p.h
+++ b/src/gui/util/qcompleter_p.h
@@ -93,6 +93,7 @@ public:
 
     bool eatFocusOut;
     QRect popupRect;
+    bool hiddenBecauseNoMatch;
 
     void showPopup(const QRect&);
     void _q_complete(QModelIndex, bool = false);
diff --git a/src/gui/widgets/qmainwindow.cpp b/src/gui/widgets/qmainwindow.cpp
index 1183be6..d971f61 100644
--- a/src/gui/widgets/qmainwindow.cpp
+++ b/src/gui/widgets/qmainwindow.cpp
@@ -78,6 +78,7 @@ public:
         : layout(0), explicitIconSize(false), toolButtonStyle(Qt::ToolButtonIconOnly)
 #ifdef Q_WS_MAC
             , useHIToolBar(false)
+            , activateUnifiedToolbarAfterFullScreen(false)
 #endif
 #if !defined(QT_NO_DOCKWIDGET) && !defined(QT_NO_CURSOR)
             , hasOldCursor(false) , cursorAdjusted(false)
@@ -89,6 +90,7 @@ public:
     Qt::ToolButtonStyle toolButtonStyle;
 #ifdef Q_WS_MAC
     bool useHIToolBar;
+    bool activateUnifiedToolbarAfterFullScreen;
 #endif
     void init();
     QList<int> hoverSeparator;
@@ -1501,8 +1503,6 @@ bool QMainWindow::event(QEvent *event)
     \i Before Qt 4.5, if you called showFullScreen() on the main window, the QToolbar would
         disappear since it is considered to be part of the title bar. Qt 4.5 and up will now work around this by pulling
         the toolbars out and back into the regular toolbar and vice versa when you swap out.
-        However, a good practice would be that turning off the unified toolbar before you call
-        showFullScreen() and restoring it after you call showNormal().
     \endlist
 
     Setting this back to false will remove these restrictions.
diff --git a/src/gui/widgets/qmainwindowlayout_p.h b/src/gui/widgets/qmainwindowlayout_p.h
index e1b981c..3e1a95d 100644
--- a/src/gui/widgets/qmainwindowlayout_p.h
+++ b/src/gui/widgets/qmainwindowlayout_p.h
@@ -335,6 +335,7 @@ public:
     void cleanUpMacToolbarItems();
     void fixSizeInUnifiedToolbar(QToolBar *tb) const;
     bool useHIToolBar;
+    bool activateUnifiedToolbarAfterFullScreen;
     void syncUnifiedToolbarVisibility();
     bool blockVisiblityCheck;
 #endif
diff --git a/src/gui/widgets/qmenubar.cpp b/src/gui/widgets/qmenubar.cpp
index df16f7f..ae56fa5 100644
--- a/src/gui/widgets/qmenubar.cpp
+++ b/src/gui/widgets/qmenubar.cpp
@@ -1628,10 +1628,10 @@ bool QMenuBar::eventFilter(QObject *object, QEvent *event)
 }
 
 /*!
-  \internal
+  Returns the QAction at \a pt. Returns 0 if there is no action at \a pt or if
+the location has a separator.
 
-  Return the item at \a pt, or 0 if there is no item there or if it is
-  a separator item.
+    \sa addAction(), addSeparator()
 */
 QAction *QMenuBar::actionAt(const QPoint &pt) const
 {
@@ -1640,9 +1640,9 @@ QAction *QMenuBar::actionAt(const QPoint &pt) const
 }
 
 /*!
-  \internal
+  Returns the geometry of action \a act as a QRect.
 
-  Returns the geometry of action \a act.
+    \sa actionAt()
 */
 QRect QMenuBar::actionGeometry(QAction *act) const
 {
@@ -1836,10 +1836,17 @@ void QMenuBarPrivate::_q_updateLayout()
 }
 
 /*!
-  \internal
+    \fn void QMenuBar::setCornerWidget(QWidget *widget, Qt::Corner corner)
 
-  This sets widget \a w to be shown directly on the left of the first or
-  the right of the last menu item, depending on \a corner.
+    This sets the given \a widget to be shown directly on the left of the first
+    menu item, or on the right of the last menu item, depending on \a corner.
+
+    The menu bar takes ownership of \a widget, reparenting it into the menu bar.
+    However, if the \a corner already contains a widget, this previous widget
+    will no longer be managed and will still be a visible child of the menu bar.
+
+   \note Using a corner other than Qt::TopRightCorner or Qt::TopLeftCorner
+    will result in a warning.
 */
 void QMenuBar::setCornerWidget(QWidget *w, Qt::Corner corner)
 {
@@ -1869,10 +1876,11 @@ void QMenuBar::setCornerWidget(QWidget *w, Qt::Corner corner)
 }
 
 /*!
-  \internal
+    Returns the widget on the left of the first or on the right of the last menu
+    item, depending on \a corner.
 
-  Returns the widget in the left of the first or the right of the last menu
-  item, depending on \a corner.
+   \note Using a corner other than Qt::TopRightCorner or Qt::TopLeftCorner
+    will result in a warning.
 */
 QWidget *QMenuBar::cornerWidget(Qt::Corner corner) const
 {
diff --git a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
index f8b228c..27e728a 100644
--- a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
+++ b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
@@ -275,7 +275,7 @@ bool QMeeGoGraphicsSystem::unlockLiveTexture(Qt::HANDLE h)
     }
 }
 
-void QMeeGoGraphicsSystem::queryLiveTexture(Qt::HANDLE h, void **data, int *pitch)
+void QMeeGoGraphicsSystem::queryLiveTexture(Qt::HANDLE h, void **data, int *pitch, QImage::Format *f)
 {
     // FIXME Only allow this on locked surfaces
     if (! liveTexturePixmaps.contains(h)) {
@@ -289,6 +289,14 @@ void QMeeGoGraphicsSystem::queryLiveTexture(Qt::HANDLE h, void **data, int *pitc
     EGLSurface surface = getSurfaceForLiveTexturePixmap(liveTexturePixmaps.value(h));
     eglQuerySurface(QEgl::display(), surface, EGL_BITMAP_POINTER_KHR, (EGLint*) data);
     eglQuerySurface(QEgl::display(), surface, EGL_BITMAP_PITCH_KHR, (EGLint*) pitch);
+
+    // Ok, here we know we just support those two formats. Real solution would be:
+    // in liveTexturePixmaps store a small structure containing the pixmap and the
+    // original Qt format.
+    if (liveTexturePixmaps.value(h)->depth() > 16)
+        *f = QImage::Format_ARGB32_Premultiplied;
+    else
+        *f = QImage::Format_RGB16;
 }
 
 Qt::HANDLE QMeeGoGraphicsSystem::liveTextureToEGLImage(Qt::HANDLE h)
@@ -363,7 +371,9 @@ EGLSurface QMeeGoGraphicsSystem::getSurfaceForLiveTexturePixmap(QPixmap *pixmap)
         pixmapData->gl_surface = (void*)QEgl::createSurface(pixmap, config);
         
         if (hasAlpha)
-            pixmapData->flags = pixmapData->flags | QX11PixmapData::GlSurfaceCreatedWithAlpha;
+            pixmapData->flags |= QX11PixmapData::GlSurfaceCreatedWithAlpha;
+        else
+            pixmapData->flags &= ~QX11PixmapData::GlSurfaceCreatedWithAlpha;
             
         if (pixmapData->gl_surface == (void*)EGL_NO_SURFACE)
             return NULL;
@@ -439,9 +449,9 @@ bool qt_meego_live_texture_unlock(Qt::HANDLE h)
     return QMeeGoGraphicsSystem::unlockLiveTexture(h);
 }
 
-void qt_meego_live_texture_query(Qt::HANDLE h, void **data, int *pitch)
+void qt_meego_live_texture_query(Qt::HANDLE h, void **data, int *pitch, QImage::Format *f)
 {
-    return QMeeGoGraphicsSystem::queryLiveTexture(h, data, pitch);
+    return QMeeGoGraphicsSystem::queryLiveTexture(h, data, pitch, f);
 }
 
 Qt::HANDLE qt_meego_live_texture_to_egl_image(Qt::HANDLE h)
diff --git a/src/plugins/graphicssystems/meego/qmeegographicssystem.h b/src/plugins/graphicssystems/meego/qmeegographicssystem.h
index 934d32d..fad0db6 100644
--- a/src/plugins/graphicssystems/meego/qmeegographicssystem.h
+++ b/src/plugins/graphicssystems/meego/qmeegographicssystem.h
@@ -71,7 +71,7 @@ public:
     static void destroyLiveTexture(Qt::HANDLE h);
     static bool lockLiveTexture(Qt::HANDLE h);
     static bool unlockLiveTexture(Qt::HANDLE h);
-    static void queryLiveTexture(Qt::HANDLE h, void **data, int *pitch);
+    static void queryLiveTexture(Qt::HANDLE h, void **data, int *pitch, QImage::Format *format);
     static Qt::HANDLE liveTextureToEGLImage(Qt::HANDLE h);
 
 private:
@@ -99,7 +99,7 @@ extern "C" {
     Q_DECL_EXPORT void m_live_texture_destroy(Qt::HANDLE h);
     Q_DECL_EXPORT bool m_live_texture_lock(Qt::HANDLE h);
     Q_DECL_EXPORT bool m_live_texture_unlock(Qt::HANDLE h);
-    Q_DECL_EXPORT void m_live_texture_query(Qt::HANDLE h, void **data, int *pitch);
+    Q_DECL_EXPORT void m_live_texture_query(Qt::HANDLE h, void **data, int *pitch, QImage::Format *f);
     Q_DECL_EXPORT Qt::HANDLE m_live_texture_to_egl_image(Qt::HANDLE h);
 }
 
diff --git a/src/plugins/graphicssystems/meego/qmeegopixmapdata.cpp b/src/plugins/graphicssystems/meego/qmeegopixmapdata.cpp
index 84fc593..5473d09 100644
--- a/src/plugins/graphicssystems/meego/qmeegopixmapdata.cpp
+++ b/src/plugins/graphicssystems/meego/qmeegopixmapdata.cpp
@@ -51,6 +51,24 @@ static EGLint preserved_image_attribs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, E
 
 QHash <void*, QMeeGoImageInfo*> QMeeGoPixmapData::sharedImagesMap;
 
+// This helper method converts (in place) a QImage::Format_ARGB4444_Premultiplied to 
+// GL-friendly Format_RGBA4444_Premultiplied. Just swaps the bits around really.
+static void qARGBA4ToRGBA4(QImage *image)
+{
+    unsigned char *raw = static_cast <unsigned char *> (image->data_ptr()->data);
+    // FIXME image.bytesPerLine() is broken. Returns 512 for 128x128 image while it should
+    // return 256
+    int bytesPerLine = image->width() * 2;
+
+    for (int y = 0; y < image->height(); y++) {
+        for (int x = 0; x < image->width(); x++) {
+            unsigned short *target = (unsigned short *) (raw + (y * bytesPerLine + (x * 2)));
+            // FIXME Oh yeah, that's broken with endianness.
+            *target = (*target << 4) | (* target >> 12);
+        }
+    }
+}
+
 /* Public */
 
 QMeeGoPixmapData::QMeeGoPixmapData() : QGLPixmapData(QPixmapData::PixmapType)
@@ -108,8 +126,6 @@ void QMeeGoPixmapData::fromEGLImage(Qt::HANDLE handle)
     QMeeGoExtensions::eglQueryImageNOK(QEgl::display(), (EGLImageKHR) handle, EGL_HEIGHT, &newHeight);
           
     if (textureIsBound) {
-        // FIXME Remove this ugly hasAlphaChannel check when Qt lands the NoOpaqueCheck flag fix
-        // for QGLPixmapData.
         fromTexture(newTextureId, newWidth, newHeight, true); 
     } else {
         qWarning("Failed to create a texture from an egl image!");
@@ -152,10 +168,9 @@ void QMeeGoPixmapData::fromEGLSharedImage(Qt::HANDLE handle, const QImage &si)
     }
         
     if (textureIsBound) {
-        // FIXME Remove this ugly hasAlphaChannel check when Qt lands the NoOpaqueCheck flag fix
-        // for QGLPixmapData.
         fromTexture(newTextureId, newWidth, newHeight, 
                     (si.hasAlphaChannel() && const_cast<QImage &>(si).data_ptr()->checkForAlphaPixels()));
+        texture()->options &= ~QGLContext::InvertedYBindOption;
         softImage = si;
         QMeeGoPixmapData::registerSharedImage(handle, softImage);
     } else {
@@ -171,15 +186,31 @@ Qt::HANDLE QMeeGoPixmapData::imageToEGLSharedImage(const QImage &image)
     QMeeGoExtensions::ensureInitialized();
 
     glFinish();
-    QGLPixmapData pixmapData(QPixmapData::PixmapType);
-    pixmapData.fromImage(image, 0);
-    GLuint textureId = pixmapData.bind();
+
+    GLuint textureId;
+
+    glGenTextures(1, &textureId);
+    glBindTexture(GL_TEXTURE_2D, textureId);
+    if (image.hasAlphaChannel() && (image.hasAlphaChannel() && const_cast<QImage &>(image).data_ptr()->checkForAlphaPixels())) {
+        QImage convertedImage = image.convertToFormat(QImage::Format_ARGB4444_Premultiplied, Qt::DiffuseAlphaDither | Qt::DiffuseDither | Qt::PreferDither);
+        qARGBA4ToRGBA4(&convertedImage);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.width(), image.height(), 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, convertedImage.bits());
+    } else {
+        QImage convertedImage = image.convertToFormat(QImage::Format_RGB16, Qt::DiffuseAlphaDither | Qt::DiffuseDither | Qt::PreferDither);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image.width(), image.height(), 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, convertedImage.bits());
+    }
+
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 
     glFinish();
+
+    glBindTexture(GL_TEXTURE_2D, textureId);
     EGLImageKHR eglimage = QEgl::eglCreateImageKHR(QEgl::display(), QEglContext::currentContext(QEgl::OpenGL)->context(),
                                                                                                 EGL_GL_TEXTURE_2D_KHR,
                                                                                                 (EGLClientBuffer) textureId,
                                                                                                 preserved_image_attribs);
+    glDeleteTextures(1, &textureId);
     glFinish();
 
     if (eglimage) {
@@ -195,6 +226,7 @@ Qt::HANDLE QMeeGoPixmapData::imageToEGLSharedImage(const QImage &image)
 
 void QMeeGoPixmapData::updateFromSoftImage()
 {
+    // FIXME That's broken with recent 16bit textures changes.
     m_dirty = true;
     m_source = softImage;
     ensureCreated();
diff --git a/tests/auto/modeltest/dynamictreemodel.cpp b/tests/auto/modeltest/dynamictreemodel.cpp
index b572eb1..fa634b6 100644
--- a/tests/auto/modeltest/dynamictreemodel.cpp
+++ b/tests/auto/modeltest/dynamictreemodel.cpp
@@ -63,6 +63,13 @@ QModelIndex DynamicTreeModel::index(int row, int column, const QModelIndex &pare
 
   QList<QList<qint64> > childIdColumns = m_childItems.value(parent.internalId());
 
+  const qint64 grandParent = findParentId(parent.internalId());
+  if (grandParent >= 0) {
+    QList<QList<qint64> > parentTable = m_childItems.value(grandParent);
+    Q_ASSERT(parent.column() < parentTable.size());
+    QList<qint64> parentSiblings = parentTable.at(parent.column());
+    Q_ASSERT(parent.row() < parentSiblings.size());
+  }
 
   if (childIdColumns.size() == 0)
     return QModelIndex();
diff --git a/tests/auto/qabstractitemmodel/tst_qabstractitemmodel.cpp b/tests/auto/qabstractitemmodel/tst_qabstractitemmodel.cpp
index dbcccc9..b723253 100644
--- a/tests/auto/qabstractitemmodel/tst_qabstractitemmodel.cpp
+++ b/tests/auto/qabstractitemmodel/tst_qabstractitemmodel.cpp
@@ -1167,6 +1167,7 @@ void tst_QAbstractItemModel::testMoveToGrandParent_data()
 
     // Moving everything from one parent to another
     QTest::newRow("move12") << 0 << 9 << 10;
+    QTest::newRow("move13") << 0 << 9 << 0;
 }
 
 void tst_QAbstractItemModel::testMoveToGrandParent()
@@ -1314,6 +1315,11 @@ void tst_QAbstractItemModel::testMoveToSibling_data()
     QTest::newRow("move09") << 8 << 8 << 4;
     QTest::newRow("move10") << 8 << 8 << 5;
     QTest::newRow("move11") << 8 << 8 << 6;
+
+    // Move such that the destination parent no longer valid after the move.
+    // The destination parent is always QMI(5, 0), but after this move the
+    // row count is 5, so (5, 0) (used internally in QAIM) no longer refers to a valid index.
+    QTest::newRow("move12") << 0 << 4 << 0;
 }
 
 void tst_QAbstractItemModel::testMoveToSibling()
diff --git a/tests/auto/qcompleter/tst_qcompleter.cpp b/tests/auto/qcompleter/tst_qcompleter.cpp
index 1590528..650c328 100644
--- a/tests/auto/qcompleter/tst_qcompleter.cpp
+++ b/tests/auto/qcompleter/tst_qcompleter.cpp
@@ -119,6 +119,8 @@ private slots:
 
     void directoryModel_data();
     void directoryModel();
+    void fileSystemModel_data();
+    void fileSystemModel();
 
     void changingModel_data();
     void changingModel();
@@ -149,15 +151,17 @@ private slots:
     void task253125_lineEditCompletion_data();
     void task253125_lineEditCompletion();
     void task247560_keyboardNavigation();
+    void QTBUG_14292_filesystem();
 
 private:
-    void filter();
+    void filter(bool assync = false);
     void testRowCount();
     enum ModelType {
         CASE_SENSITIVELY_SORTED_MODEL,
         CASE_INSENSITIVELY_SORTED_MODEL,
         DIRECTORY_MODEL,
-        HISTORY_MODEL
+        HISTORY_MODEL,
+        FILESYSTEM_MODEL
     };
     void setSourceModel(ModelType);
 
@@ -233,12 +237,21 @@ void tst_QCompleter::setSourceModel(ModelType type)
         completer->setModel(new QDirModel(completer));
         completer->setCompletionColumn(0);
         break;
+    case FILESYSTEM_MODEL:
+        completer->setCsvCompletion(false);
+        {
+            QFileSystemModel *m = new QFileSystemModel(completer);
+            m->setRootPath("/");
+            completer->setModel(m);
+        }
+        completer->setCompletionColumn(0);
+        break;
     default:
         qDebug() << "Invalid type";
     }
 }
 
-void tst_QCompleter::filter()
+void tst_QCompleter::filter(bool assync)
 {
     QFETCH(QString, filterText);
     QFETCH(QString, step);
@@ -250,6 +263,9 @@ void tst_QCompleter::filter()
         return;
     }
 
+    int times = 0;
+retry:
+
     completer->setCompletionPrefix(filterText);
 
     for (int i = 0; i < step.length(); i++) {
@@ -265,9 +281,13 @@ void tst_QCompleter::filter()
         completer->setCurrentRow(row);
     }
 
-    //QModelIndex si = completer->currentIndex();
-    //QCOMPARE(completer->model()->data(si).toString(), completion);
-    QVERIFY(0 == QString::compare(completer->currentCompletion(), completionText, completer->caseSensitivity()));
+    int r = QString::compare(completer->currentCompletion(), completionText, completer->caseSensitivity());
+    if (assync && r && times < 10) {
+        times++;
+        QTest::qWait(50*times);
+        goto retry;
+    }
+    QVERIFY(!r);
 }
 
 // Testing get/set functions
@@ -552,6 +572,7 @@ void tst_QCompleter::csMatchingOnCiSortedModel()
 void tst_QCompleter::directoryModel_data()
 {
     delete completer;
+
     completer = new CsvCompleter;
     completer->setModelSorting(QCompleter::CaseSensitivelySortedModel);
     setSourceModel(DIRECTORY_MODEL);
@@ -598,6 +619,57 @@ void tst_QCompleter::directoryModel()
     filter();
 }
 
+void tst_QCompleter::fileSystemModel_data()
+{
+    delete completer;
+    completer = new CsvCompleter;
+    completer->setModelSorting(QCompleter::CaseSensitivelySortedModel);
+    setSourceModel(FILESYSTEM_MODEL);
+    completer->setCaseSensitivity(Qt::CaseInsensitive);
+
+    QTest::addColumn<QString>("filterText");
+    QTest::addColumn<QString>("step");
+    QTest::addColumn<QString>("completion");
+    QTest::addColumn<QString>("completionText");
+
+    // NOTE: Add tests carefully, ensurely the paths exist on all systems
+    // Output is the sourceText; currentCompletionText()
+
+    for (int i = 0; i < 2; i++) {
+        if (i == 1)
+            QTest::newRow("FILTERING_OFF") << "FILTERING_OFF" << "" << "" << "";
+
+#if defined(Q_OS_WINCE)
+        QTest::newRow("()") << "" << "" << "/" << "/";
+        QTest::newRow("()") << "\\Program" << "" << "Program Files" << "\\Program Files";
+#elif defined(Q_OS_WIN)
+        QTest::newRow("()") << "C" << "" << "C:" << "C:";
+        QTest::newRow("()") << "C:\\Program" << "" << "Program Files" << "C:\\Program Files";
+#elif defined(Q_OS_SYMBIAN)
+        QTest::newRow("()") << "C" << "" << "C:" << "C:";
+        QTest::newRow("()") << "C:\\re" << "" << "resource" << "C:\\resource";
+#elif defined (Q_OS_MAC)
+        QTest::newRow("()") << "" << "" << "/" << "/";
+        QTest::newRow("(/a)") << "/a" << "" << "Applications" << "/Applications";
+//        QTest::newRow("(/d)") << "/d" << "" << "Developer" << "/Developer";
+#else
+        QTest::newRow("()") << "" << "" << "/" << "/";
+#if !defined(Q_OS_IRIX) && !defined(Q_OS_AIX) && !defined(Q_OS_HPUX)
+        QTest::newRow("(/h)") << "/h" << "" << "home" << "/home";
+#endif
+        QTest::newRow("(/et)") << "/et" << "" << "etc" << "/etc";
+        QTest::newRow("(/etc/passw)") << "/etc/passw" << "" << "passwd" << "/etc/passwd";
+#endif
+    }
+}
+
+void tst_QCompleter::fileSystemModel()
+{
+    //QFileSystemModel is assync.
+    filter(true);
+}
+
+
 void tst_QCompleter::changingModel_data()
 {
 }
@@ -1381,5 +1453,80 @@ void tst_QCompleter::task247560_keyboardNavigation()
     QCOMPARE(edit.text(), QString("row 3 column 1"));
 }
 
+void tst_QCompleter::QTBUG_14292_filesystem()
+{
+    QDir tmpDir = QDir::temp();
+    qsrand(QTime::currentTime().msec());
+    QString d = "tst_QCompleter_" + QString::number(qrand());
+    QVERIFY(tmpDir.mkdir(d));
+
+#if 0
+    struct Cleanup {
+        QString dir;
+        ~Cleanup() {
+            qDebug() << dir <<
+            QFile::remove(dir); }
+    } cleanup;
+    cleanup.dir = tmpDir.absolutePath()+"/" +d;
+#endif
+
+    QVERIFY(tmpDir.cd(d));
+    QVERIFY(tmpDir.mkdir("hello"));
+    QVERIFY(tmpDir.mkdir("holla"));
+
+    QLineEdit edit;
+    QCompleter comp;
+    QFileSystemModel model;
+    model.setRootPath(tmpDir.path());
+    comp.setModel(&model);
+    edit.setCompleter(&comp);
+
+    edit.show();
+    QApplication::setActiveWindow(&edit);
+    QTest::qWaitForWindowShown(&edit);
+    QTRY_VERIFY(QApplication::activeWindow() == &edit);
+    edit.setFocus();
+    QTRY_VERIFY(edit.hasFocus());
+
+    QVERIFY(!comp.popup()->isVisible());
+    edit.setText(tmpDir.path());
+    QTest::keyClick(&edit, '/');
+    QTRY_VERIFY(comp.popup()->isVisible());
+    QCOMPARE(comp.popup()->model()->rowCount(), 2);
+    QApplication::processEvents();
+    QTest::keyClick(&edit, 'h');
+    QCOMPARE(comp.popup()->model()->rowCount(), 2);
+    QTest::keyClick(&edit, 'e');
+    QCOMPARE(comp.popup()->model()->rowCount(), 1);
+    QTest::keyClick(&edit, 'r');
+    QTRY_VERIFY(!comp.popup()->isVisible());
+    QVERIFY(tmpDir.mkdir("hero"));
+    QTRY_VERIFY(comp.popup()->isVisible());
+    QCOMPARE(comp.popup()->model()->rowCount(), 1);
+    QTest::keyClick(comp.popup(), Qt::Key_Escape);
+    QTRY_VERIFY(!comp.popup()->isVisible());
+    QVERIFY(tmpDir.mkdir("nothingThere"));
+    //there is no reason creating a file should open a popup, it did in Qt 4.7.0
+    QTest::qWait(60);
+    QVERIFY(!comp.popup()->isVisible());
+
+    QTest::keyClick(&edit, Qt::Key_Backspace);
+    QTRY_VERIFY(comp.popup()->isVisible());
+    QCOMPARE(comp.popup()->model()->rowCount(), 2);
+    QTest::keyClick(&edit, 'm');
+    QTRY_VERIFY(!comp.popup()->isVisible());
+
+    QWidget w;
+    w.show();
+    QApplication::setActiveWindow(&w);
+    QTest::qWaitForWindowShown(&w);
+    QTRY_VERIFY(!edit.hasFocus() && !comp.popup()->hasFocus());
+
+    QVERIFY(tmpDir.mkdir("hemo"));
+    //there is no reason creating a file should open a popup, it did in Qt 4.7.0
+    QTest::qWait(60);
+    QVERIFY(!comp.popup()->isVisible());
+}
+
 QTEST_MAIN(tst_QCompleter)
 #include "tst_qcompleter.moc"
diff --git a/tests/auto/qgraphicsgridlayout/tst_qgraphicsgridlayout.cpp b/tests/auto/qgraphicsgridlayout/tst_qgraphicsgridlayout.cpp
index 5b03767..174e4aa 100644
--- a/tests/auto/qgraphicsgridlayout/tst_qgraphicsgridlayout.cpp
+++ b/tests/auto/qgraphicsgridlayout/tst_qgraphicsgridlayout.cpp
@@ -61,13 +61,19 @@ private slots:
     void qgraphicsgridlayout();
     void addItem_data();
     void addItem();
+    void alignment_data();
     void alignment();
     void alignment2();
     void alignment2_data();
+    void columnAlignment_data();
     void columnAlignment();
+    void columnCount_data();
     void columnCount();
+    void columnMaximumWidth_data();
     void columnMaximumWidth();
+    void columnMinimumWidth_data();
     void columnMinimumWidth();
+    void columnPreferredWidth_data();
     void columnPreferredWidth();
     void setColumnFixedWidth();
     void columnSpacing();
@@ -78,12 +84,18 @@ private slots:
     void horizontalSpacing();
     void itemAt();
     void removeAt();
+    void rowAlignment_data();
     void rowAlignment();
+    void rowCount_data();
     void rowCount();
+    void rowMaximumHeight_data();
     void rowMaximumHeight();
+    void rowMinimumHeight_data();
     void rowMinimumHeight();
+    void rowPreferredHeight_data();
     void rowPreferredHeight();
     void rowSpacing();
+    void rowStretchFactor_data();
     void rowStretchFactor();
     void setColumnSpacing_data();
     void setColumnSpacing();
@@ -98,6 +110,7 @@ private slots:
     void sizeHint();
     void verticalSpacing_data();
     void verticalSpacing();
+    void layoutDirection_data();
     void layoutDirection();
     void removeLayout();
     void defaultStretchFactors_data();
@@ -107,12 +120,14 @@ private slots:
     void avoidRecursionInInsertItem();
     void styleInfoLeak();
     void task236367_maxSizeHint();
+    void heightForWidth();
+    void heightForWidthWithSpanning();
 };
 
 class RectWidget : public QGraphicsWidget
 {
 public:
-    RectWidget(QGraphicsItem *parent = 0) : QGraphicsWidget(parent){}
+    RectWidget(QGraphicsItem *parent = 0) : QGraphicsWidget(parent), m_fnConstraint(0) {}
 
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
     {
@@ -125,9 +140,12 @@ public:
 
     QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const
     {
-        if (m_sizeHints[which].isValid()) {
+        if (constraint.width() < 0 && constraint.height() < 0 && m_sizeHints[which].isValid()) {
             return m_sizeHints[which];
         }
+        if (m_fnConstraint) {
+            return m_fnConstraint(which, constraint);
+        }
         return QGraphicsWidget::sizeHint(which, constraint);
     }
 
@@ -136,7 +154,13 @@ public:
         updateGeometry();
     }
 
+    void setConstraintFunction(QSizeF (*fnConstraint)(Qt::SizeHint, const QSizeF &)) {
+        m_fnConstraint = fnConstraint;
+    }
+
     QSizeF m_sizeHints[Qt::NSizeHints];
+    QSizeF (*m_fnConstraint)(Qt::SizeHint, const QSizeF &);
+
 };
 
 struct ItemDesc
@@ -146,7 +170,8 @@ struct ItemDesc
       m_rowSpan(1),
       m_colSpan(1),
       m_sizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred)),
-      m_align(0)
+      m_align(0),
+      m_fnConstraint(0)
     {
     }
 
@@ -213,8 +238,20 @@ struct ItemDesc
         return (*this);
     }
 
+    ItemDesc &heightForWidth(QSizeF (*fnConstraint)(Qt::SizeHint, const QSizeF &)) {
+        m_fnConstraint = fnConstraint;
+        m_constraintOrientation = Qt::Vertical;
+        return (*this);
+    }
+
     void apply(QGraphicsGridLayout *layout, QGraphicsWidget *item) {
-        item->setSizePolicy(m_sizePolicy);
+        QSizePolicy sp = m_sizePolicy;
+        if (m_fnConstraint) {
+            sp.setHeightForWidth(m_constraintOrientation == Qt::Vertical);
+            //sp.setWidthForHeight(m_constraintOrientation == Qt::Horizontal);
+        }
+
+        item->setSizePolicy(sp);
         for (int i = 0; i < Qt::NSizeHints; ++i) {
             if (!m_sizes[i].isValid())
                 continue;
@@ -233,6 +270,7 @@ struct ItemDesc
                 break;
             }
         }
+
         layout->addItem(item, m_pos.first, m_pos.second, m_rowSpan, m_colSpan);
         layout->setAlignment(item, m_align);
     }
@@ -240,6 +278,7 @@ struct ItemDesc
     void apply(QGraphicsGridLayout *layout, RectWidget *item) {
         for (int i = 0; i < Qt::NSizeHints; ++i)
             item->setSizeHint((Qt::SizeHint)i, m_sizeHints[i]);
+        item->setConstraintFunction(m_fnConstraint);
         apply(layout, static_cast<QGraphicsWidget*>(item));
     }
 
@@ -251,6 +290,9 @@ struct ItemDesc
     QSizeF m_sizeHints[Qt::NSizeHints];
     QSizeF m_sizes[Qt::NSizeHints];
     Qt::Alignment m_align;
+
+    Qt::Orientation m_constraintOrientation;
+    QSizeF (*m_fnConstraint)(Qt::SizeHint, const QSizeF &);
 };
 
 typedef QList<ItemDesc> ItemList;
@@ -342,7 +384,7 @@ void tst_QGraphicsGridLayout::qgraphicsgridlayout()
     layout.verticalSpacing();
 }
 
-static void populateLayout(QGraphicsGridLayout *gridLayout, int width, int height)
+static void populateLayout(QGraphicsGridLayout *gridLayout, int width, int height, bool hasHeightForWidth = false)
 {
     for (int y = 0; y < height; ++y) {
         for (int x = 0; x < width; ++x) {
@@ -351,6 +393,9 @@ static void populateLayout(QGraphicsGridLayout *gridLayout, int width, int heigh
             item->setPreferredSize(25, 25);
             item->setMaximumSize(50, 50);
             gridLayout->addItem(item, y, x);
+            QSizePolicy policy = item->sizePolicy();
+            policy.setHeightForWidth(hasHeightForWidth);
+            item->setSizePolicy(policy);
         }
     }
 }
@@ -367,18 +412,22 @@ static void populateLayout(QGraphicsGridLayout *gridLayout, int width, int heigh
  * |xxxx|+---|---+|
  * +----+----+----+
  */
-static void populateLayoutWithSpansAndHoles(QGraphicsGridLayout *gridLayout)
+static void populateLayoutWithSpansAndHoles(QGraphicsGridLayout *gridLayout, bool hasHeightForWidth = false)
 {
     QGraphicsWidget *item = new RectWidget();
     item->setMinimumSize(10, 10);
     item->setPreferredSize(25, 25);
     item->setMaximumSize(50, 50);
+    QSizePolicy sizepolicy = item->sizePolicy();
+    sizepolicy.setHeightForWidth(hasHeightForWidth);
+    item->setSizePolicy(sizepolicy);
     gridLayout->addItem(item, 0, 0, 1, 2);
 
     item = new RectWidget();
     item->setMinimumSize(10, 10);
     item->setPreferredSize(25, 25);
     item->setMaximumSize(50, 50);
+    item->setSizePolicy(sizepolicy);
     gridLayout->addItem(item, 1, 1, 1, 2);
 }
 
@@ -431,19 +480,28 @@ void tst_QGraphicsGridLayout::addItem()
     delete layout;
 }
 
+void tst_QGraphicsGridLayout::alignment_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
+
 // public Qt::Alignment alignment(QGraphicsLayoutItem* item) const
 void tst_QGraphicsGridLayout::alignment()
 {
 #ifdef Q_WS_MAC
     QSKIP("Resizing a QGraphicsWidget to effectiveSizeHint(Qt::MaximumSize) is currently not supported on mac", SkipAll);
 #endif
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
@@ -495,6 +553,14 @@ void tst_QGraphicsGridLayout::alignment()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::columnAlignment_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
+
 // public void setColumnAlignment(int column, Qt::Alignment alignment)
 // public Qt::Alignment columnAlignment(int column) const
 void tst_QGraphicsGridLayout::columnAlignment()
@@ -502,13 +568,14 @@ void tst_QGraphicsGridLayout::columnAlignment()
 #ifdef Q_WS_MAC
     QSKIP("Resizing a QGraphicsWidget to effectiveSizeHint(Qt::MaximumSize) is currently not supported on mac", SkipAll);
 #endif
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(1);
     widget->setContentsMargins(0, 0, 0, 0);
@@ -554,9 +621,17 @@ void tst_QGraphicsGridLayout::columnAlignment()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::columnCount_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
 // public int columnCount() const
 void tst_QGraphicsGridLayout::columnCount()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
@@ -588,7 +663,7 @@ void tst_QGraphicsGridLayout::columnCount()
     // ### Talk with Jasmin. Not sure if removeAt() should adjust columnCount().
     widget->setLayout(0);
     layout = new QGraphicsGridLayout();
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     QCOMPARE(layout->columnCount(), 3);
     layout->removeAt(5);
     layout->removeAt(3);
@@ -603,16 +678,24 @@ void tst_QGraphicsGridLayout::columnCount()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::columnMaximumWidth_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
 // public qreal columnMaximumWidth(int column) const
 void tst_QGraphicsGridLayout::columnMaximumWidth()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
@@ -638,16 +721,24 @@ void tst_QGraphicsGridLayout::columnMaximumWidth()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::columnMinimumWidth_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
 // public qreal columnMinimumWidth(int column) const
 void tst_QGraphicsGridLayout::columnMinimumWidth()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
@@ -673,16 +764,24 @@ void tst_QGraphicsGridLayout::columnMinimumWidth()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::columnPreferredWidth_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
 // public qreal columnPreferredWidth(int column) const
 void tst_QGraphicsGridLayout::columnPreferredWidth()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
@@ -992,16 +1091,25 @@ void tst_QGraphicsGridLayout::removeAt()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::rowAlignment_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
+
 // public Qt::Alignment rowAlignment(int row) const
 void tst_QGraphicsGridLayout::rowAlignment()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 2, 3);
+    populateLayout(layout, 2, 3, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(1);
     widget->setContentsMargins(0, 0, 0, 0);
@@ -1051,17 +1159,26 @@ void tst_QGraphicsGridLayout::rowAlignment()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::rowCount_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
+
 // public int rowCount() const
 // public int columnCount() const
 void tst_QGraphicsGridLayout::rowCount()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 2, 3);
+    populateLayout(layout, 2, 3, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
     widget->setContentsMargins(0, 0, 0, 0);
@@ -1071,23 +1188,32 @@ void tst_QGraphicsGridLayout::rowCount()
     // with spans and holes...
     widget->setLayout(0);
     layout = new QGraphicsGridLayout();
-    populateLayoutWithSpansAndHoles(layout);
+    populateLayoutWithSpansAndHoles(layout, hasHeightForWidth);
     QCOMPARE(layout->rowCount(), 2);
     QCOMPARE(layout->columnCount(), 3);
 
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::rowMaximumHeight_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
+
 // public qreal rowMaximumHeight(int row) const
 void tst_QGraphicsGridLayout::rowMaximumHeight()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout;
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 2, 3);
+    populateLayout(layout, 2, 3, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
@@ -1113,16 +1239,24 @@ void tst_QGraphicsGridLayout::rowMaximumHeight()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::rowMinimumHeight_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
 // public qreal rowMinimumHeight(int row) const
 void tst_QGraphicsGridLayout::rowMinimumHeight()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 2, 3);
+    populateLayout(layout, 2, 3, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
@@ -1148,16 +1282,24 @@ void tst_QGraphicsGridLayout::rowMinimumHeight()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::rowPreferredHeight_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
 // public qreal rowPreferredHeight(int row) const
 void tst_QGraphicsGridLayout::rowPreferredHeight()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 2, 3);
+    populateLayout(layout, 2, 3, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
@@ -1246,16 +1388,25 @@ void tst_QGraphicsGridLayout::rowSpacing()
 
 }
 
+void tst_QGraphicsGridLayout::rowStretchFactor_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
+
 // public int rowStretchFactor(int row) const
 void tst_QGraphicsGridLayout::rowStretchFactor()
 {
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 2, 3);
+    populateLayout(layout, 2, 3, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
@@ -1279,9 +1430,12 @@ void tst_QGraphicsGridLayout::setColumnSpacing_data()
 {
     QTest::addColumn<int>("column");
     QTest::addColumn<qreal>("spacing");
-    QTest::newRow("null") << 0 << qreal(0.0);
-    QTest::newRow("10") << 0 << qreal(10.0);
+    QTest::addColumn<bool>("hasHeightForWidth");
 
+    QTest::newRow("null") << 0 << qreal(0.0) << false;
+    QTest::newRow("10") << 0 << qreal(10.0) << false;
+    QTest::newRow("null, hasHeightForWidth") << 0 << qreal(0.0) << true;
+    QTest::newRow("10, hasHeightForWidth") << 0 << qreal(10.0) << true;
 }
 
 // public void setColumnSpacing(int column, qreal spacing)
@@ -1289,6 +1443,7 @@ void tst_QGraphicsGridLayout::setColumnSpacing()
 {
     QFETCH(int, column);
     QFETCH(qreal, spacing);
+    QFETCH(bool, hasHeightForWidth);
 
     QGraphicsScene scene;
     QGraphicsView view(&scene);
@@ -1296,7 +1451,7 @@ void tst_QGraphicsGridLayout::setColumnSpacing()
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     layout->setSpacing(0);
     layout->setContentsMargins(0, 0, 0, 0);
     qreal oldSpacing = layout->columnSpacing(column);
@@ -1333,9 +1488,12 @@ void tst_QGraphicsGridLayout::setRowSpacing_data()
 {
     QTest::addColumn<int>("row");
     QTest::addColumn<qreal>("spacing");
-    QTest::newRow("null") << 0 << qreal(0.0);
-    QTest::newRow("10") << 0 << qreal(10.0);
+    QTest::addColumn<bool>("hasHeightForWidth");
 
+    QTest::newRow("null") << 0 << qreal(0.0) << false;
+    QTest::newRow("10") << 0 << qreal(10.0) << false;
+    QTest::newRow("null, hasHeightForWidth") << 0 << qreal(0.0) << true;
+    QTest::newRow("10, hasHeightForWidth") << 0 << qreal(10.0) << true;
 }
 
 // public void setRowSpacing(int row, qreal spacing)
@@ -1343,6 +1501,7 @@ void tst_QGraphicsGridLayout::setRowSpacing()
 {
     QFETCH(int, row);
     QFETCH(qreal, spacing);
+    QFETCH(bool, hasHeightForWidth);
 
     QGraphicsScene scene;
     QGraphicsView view(&scene);
@@ -1350,7 +1509,7 @@ void tst_QGraphicsGridLayout::setRowSpacing()
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     layout->setSpacing(0);
     layout->setContentsMargins(0, 0, 0, 0);
     qreal oldSpacing = layout->rowSpacing(row);
@@ -1364,21 +1523,25 @@ void tst_QGraphicsGridLayout::setRowSpacing()
 void tst_QGraphicsGridLayout::setSpacing_data()
 {
     QTest::addColumn<qreal>("spacing");
-    QTest::newRow("zero") << qreal(0.0);
-    QTest::newRow("17") << qreal(17.0);
+    QTest::addColumn<bool>("hasHeightForWidth");
+    QTest::newRow("zero") << qreal(0.0) << false;
+    QTest::newRow("17") << qreal(17.0) << false;
+    QTest::newRow("zero, hasHeightForWidth") << qreal(0.0) << true;
+    QTest::newRow("17, hasHeightForWidth") << qreal(17.0) << true;
 }
 
 // public void setSpacing(qreal spacing)
 void tst_QGraphicsGridLayout::setSpacing()
 {
     QFETCH(qreal, spacing);
+    QFETCH(bool, hasHeightForWidth);
     QGraphicsScene scene;
     QGraphicsView view(&scene);
     QGraphicsWidget *widget = new QGraphicsWidget(0, Qt::Window);
     QGraphicsGridLayout *layout = new QGraphicsGridLayout();
     scene.addItem(widget);
     widget->setLayout(layout);
-    populateLayout(layout, 3, 2);
+    populateLayout(layout, 3, 2, hasHeightForWidth);
     layout->setContentsMargins(0, 0, 0, 0);
     QSizeF sh = layout->sizeHint(Qt::PreferredSize, QSizeF());
     qreal oldVSpacing = layout->verticalSpacing();
@@ -1509,8 +1672,18 @@ void tst_QGraphicsGridLayout::verticalSpacing()
     delete widget;
 }
 
+void tst_QGraphicsGridLayout::layoutDirection_data()
+{
+    QTest::addColumn<bool>("hasHeightForWidth");
+
+    QTest::newRow("") << false;
+    QTest::newRow("hasHeightForWidth") << true;
+}
+
 void tst_QGraphicsGridLayout::layoutDirection()
 {
+    QFETCH(bool, hasHeightForWidth);
+
     QGraphicsScene scene;
     QGraphicsView view(&scene);
 
@@ -1533,6 +1706,12 @@ void tst_QGraphicsGridLayout::layoutDirection()
     w4->setMinimumSize(30, 20);
     layout->addItem(w4, 1, 1);
 
+    QSizePolicy policy = w1->sizePolicy();
+    policy.setHeightForWidth(hasHeightForWidth);
+    w1->setSizePolicy(policy);
+    w2->setSizePolicy(policy);
+    w4->setSizePolicy(policy);
+
     layout->setAlignment(w2, Qt::AlignRight);
     layout->setAlignment(w3, Qt::AlignLeft);
 
@@ -2116,6 +2295,17 @@ void tst_QGraphicsGridLayout::alignment2()
     delete widget;
 }
 
+static QSizeF hfw1(Qt::SizeHint, const QSizeF &constraint)
+{
+    QSizeF result(constraint);
+    if (constraint.width() < 0 && constraint.height() < 0) {
+        return QSizeF(50, 400);
+    } else if (constraint.width() >= 0) {
+        result.setHeight(20000./constraint.width());
+    }
+    return result;
+}
+
 void tst_QGraphicsGridLayout::geometries_data()
 {
 
@@ -2145,6 +2335,57 @@ void tst_QGraphicsGridLayout::geometries_data()
                                 << QRectF(0, 0, 60,10) << QRectF(0, 10, 60,10)
                             );
 
+    // change layout height and verify
+    QTest::newRow("hfw-h401") << (ItemList()
+                                    << ItemDesc(0,0)
+                                        .minSize(QSizeF(1,1))
+                                        .preferredSize(QSizeF(50,10))
+                                        .maxSize(QSizeF(100, 100))
+                                    << ItemDesc(0,1)
+                                        .minSize(QSizeF(1,1))
+                                        .preferredSize(QSizeF(50,10))
+                                        .maxSize(QSizeF(100, 100))
+                                    << ItemDesc(1,0)
+                                        .minSize(QSizeF(1,1))
+                                        .preferredSize(QSizeF(50,10))
+                                        .maxSize(QSizeF(100, 100))
+                                    << ItemDesc(1,1)
+                                        .minSize(QSizeF(40,-1))
+                                        .preferredSize(QSizeF(50,-1))
+                                        .maxSize(QSizeF(500, -1))
+                                        .heightForWidth(hfw1)
+                                )
+                            << QSizeF(100, 401)
+                            << (RectList()
+                                << QRectF(0, 0, 50,  1) << QRectF(50, 0, 50,  1)
+                                << QRectF(0, 1, 50,100) << QRectF(50, 1, 50,400)
+                            );
+
+    QTest::newRow("hfw-h410") << (ItemList()
+                                    << ItemDesc(0,0)
+                                        .minSize(QSizeF(1,1))
+                                        .preferredSize(QSizeF(50,10))
+                                        .maxSize(QSizeF(100, 100))
+                                    << ItemDesc(0,1)
+                                        .minSize(QSizeF(1,1))
+                                        .preferredSize(QSizeF(50,10))
+                                        .maxSize(QSizeF(100, 100))
+                                    << ItemDesc(1,0)
+                                        .minSize(QSizeF(1,1))
+                                        .preferredSize(QSizeF(50,10))
+                                        .maxSize(QSizeF(100, 100))
+                                    << ItemDesc(1,1)
+                                        .minSize(QSizeF(40,40))
+                                        .preferredSize(QSizeF(50,400))
+                                        .maxSize(QSizeF(500, 500))
+                                        .heightForWidth(hfw1)
+                                )
+                            << QSizeF(100, 410)
+                            << (RectList()
+                                << QRectF(0, 0, 50,10) << QRectF(50, 0, 50,10)
+                                << QRectF(0, 10, 50,100) << QRectF(50, 10, 50,400)
+                            );
+
 }
 
 void tst_QGraphicsGridLayout::geometries()
@@ -2215,6 +2456,177 @@ void tst_QGraphicsGridLayout::task236367_maxSizeHint()
     QCOMPARE(widget->size(), QSizeF(w, h));
 }
 
+/*
+static qreal hfw(qreal w)
+{
+    if (w == 0)
+        return 20000;
+    return 20000/w;
+}
+*/
+static QSizeF hfw(Qt::SizeHint /*which*/, const QSizeF &constraint)
+{
+    QSizeF result(constraint);
+    const qreal cw = constraint.width();
+    const qreal ch = constraint.height();
+    if (cw < 0 && ch < 0) {
+        return QSizeF(200, 100);
+    } else if (cw >= 0) {
+        result.setHeight(20000./cw);
+    } else if (cw == 0) {
+        result.setHeight(20000);
+    } else if (ch >= 0) {
+        result.setWidth(20000./ch);
+    } else if (ch == 0) {
+        result.setWidth(20000);
+    }
+
+    return result;
+}
+
+static qreal growthFactorBelowPreferredSize(qreal desired, qreal sumAvailable, qreal sumDesired)
+{
+    Q_ASSERT(sumDesired != 0.0);
+    return desired * qPow(sumAvailable / sumDesired, desired / sumDesired);
+}
+
+static void expectedWidth(qreal minSize1, qreal prefSize1,
+                          qreal minSize2, qreal prefSize2,
+                          qreal targetSize, qreal *width1, qreal *width2)
+{
+    qreal sumAvail,factor1,factor2;
+    // stretch behaviour is different below and above preferred size...
+    if (targetSize < prefSize1 + prefSize2) {
+        sumAvail = targetSize - minSize1 - minSize2;
+        const qreal desired1 = prefSize1 - minSize1;
+        const qreal desired2 = prefSize2 - minSize2;
+        const qreal sumDesired = desired1 + desired2;
+        factor1 = growthFactorBelowPreferredSize(desired1, sumAvail, sumDesired);
+        factor2 = growthFactorBelowPreferredSize(desired2, sumAvail, sumDesired);
+        const qreal sumFactors = factor1 + factor2;
+        *width1 = sumAvail*factor1/sumFactors + minSize1;
+        *width2 = sumAvail*factor2/sumFactors + minSize2;
+    } else {
+        sumAvail = targetSize - prefSize1 - prefSize2;
+        factor1 = prefSize1;
+        factor2 = prefSize2;
+        const qreal sumFactors = factor1 + factor2;
+        *width1 = sumAvail*factor1/sumFactors + prefSize1;
+        *width2 = sumAvail*factor2/sumFactors + prefSize2;
+    }
+}
+
+
+bool qFuzzyCompare(const QSizeF &a, const QSizeF &b)
+{
+    return qFuzzyCompare(a.width(), b.width()) && qFuzzyCompare(a.height(), b.height());
+}
+
+void tst_QGraphicsGridLayout::heightForWidth()
+{
+    QGraphicsWidget *widget = new QGraphicsWidget;
+    QGraphicsGridLayout *layout = new QGraphicsGridLayout;
+    widget->setLayout(layout);
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->setSpacing(0);
+    RectWidget *w00 = new RectWidget;
+    w00->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
+    w00->setSizeHint(Qt::PreferredSize, QSizeF(10,10));
+    w00->setSizeHint(Qt::MaximumSize, QSizeF(100,100));
+    layout->addItem(w00, 0, 0);
+
+    RectWidget *w01 = new RectWidget;
+    w01->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
+    w01->setSizeHint(Qt::PreferredSize, QSizeF(10,10));
+    w01->setSizeHint(Qt::MaximumSize, QSizeF(100,100));
+    layout->addItem(w01, 0, 1);
+
+    RectWidget *w10 = new RectWidget;
+    w10->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
+    w10->setSizeHint(Qt::PreferredSize, QSizeF(10,10));
+    w10->setSizeHint(Qt::MaximumSize, QSizeF(100,100));
+    layout->addItem(w10, 1, 0);
+
+    RectWidget *w11 = new RectWidget;
+    w11->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
+    w11->setSizeHint(Qt::MaximumSize, QSizeF(30000,30000));
+    w11->setConstraintFunction(hfw);
+    QSizePolicy sp(QSizePolicy::Preferred, QSizePolicy::Preferred);
+    sp.setHeightForWidth(true);
+    w11->setSizePolicy(sp);
+    layout->addItem(w11, 1, 1);
+
+    QSizeF prefSize = layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(-1, -1));
+    QCOMPARE(prefSize, QSizeF(10+200, 10+100));
+
+    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(2, -1)), QSizeF(2, 20001));
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(2, -1)), QSizeF(2, 20010));
+    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(2, -1)), QSizeF(2, 20100));
+    qreal width1;
+    qreal width2;
+    expectedWidth(1, 10, 1, 200, 20, &width1, &width2);
+    QSizeF expectedSize = hfw(Qt::MinimumSize, QSizeF(width2, -1)) + QSizeF(width1, 1);
+    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(20, -1)), expectedSize);
+    expectedSize.rheight()+=9;
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(20, -1)), expectedSize);
+    expectedSize.rheight()+=90;
+    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(20, -1)), expectedSize);
+
+    expectedWidth(1, 10, 1, 200, 300, &width1, &width2);
+    expectedSize = hfw(Qt::MinimumSize, QSizeF(width2, -1)) + QSizeF(width1, 1);
+    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(300, -1)), expectedSize);
+    expectedSize.rheight()+=9;
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(300, -1)), expectedSize);
+    // the height of the hfw widget is shorter than the one to the left, which is 100, so
+    // the total height of the last row is 100 (which leaves the layout height to be 200)
+    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(300, -1)), QSizeF(300, 200));
+
+    // the hfw item is shorter than the item to the left
+    expectedWidth(1, 10, 1, 200, 500, &width1, &width2);
+    expectedSize = hfw(Qt::MinimumSize, QSizeF(width2, -1)) + QSizeF(width1, 1);
+    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(500, -1)), expectedSize);
+    expectedSize.rheight()+=9;
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(500, -1)), expectedSize);
+    // the height of the hfw widget is shorter than the one to the left, which is 100, so
+    // the total height of the last row is 100 (which leaves the layout height to be 200)
+    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(500, -1)), QSizeF(500, 200));
+
+}
+
+void tst_QGraphicsGridLayout::heightForWidthWithSpanning()
+{
+    QGraphicsWidget *widget = new QGraphicsWidget;
+    QGraphicsGridLayout *layout = new QGraphicsGridLayout;
+    widget->setLayout(layout);
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->setSpacing(0);
+
+    RectWidget *w = new RectWidget;
+    w->setSizeHint(Qt::MinimumSize, QSizeF(1,1));
+    w->setSizeHint(Qt::MaximumSize, QSizeF(30000,30000));
+    w->setConstraintFunction(hfw);
+    QSizePolicy sp(QSizePolicy::Preferred, QSizePolicy::Preferred);
+    sp.setHeightForWidth(true);
+    w->setSizePolicy(sp);
+    layout->addItem(w, 0,0,2,2);
+
+    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(-1, -1)), QSizeF(1, 100));
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(-1, -1)), QSizeF(200, 100));
+    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(-1, -1)), QSizeF(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
+
+    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(200, -1)), QSizeF(200, 100));
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(200, -1)), QSizeF(200, 100));
+    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(200, -1)), QSizeF(200, QWIDGETSIZE_MAX));
+
+    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(2, -1)), QSizeF(2, 10000));
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(2, -1)), QSizeF(2, 10000));
+    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(2, -1)), QSizeF(2, QWIDGETSIZE_MAX));
+
+    QCOMPARE(layout->effectiveSizeHint(Qt::MinimumSize, QSizeF(200, -1)), QSizeF(200, 100));
+    QCOMPARE(layout->effectiveSizeHint(Qt::PreferredSize, QSizeF(200, -1)), QSizeF(200, 100));
+    QCOMPARE(layout->effectiveSizeHint(Qt::MaximumSize, QSizeF(200, -1)), QSizeF(200, QWIDGETSIZE_MAX));
+}
+
 QTEST_MAIN(tst_QGraphicsGridLayout)
 #include "tst_qgraphicsgridlayout.moc"
 
diff --git a/tools/qdoc3/test/qt-cpp-ignore.qdocconf b/tools/qdoc3/test/qt-cpp-ignore.qdocconf
index b78b512..5d52a47 100644
--- a/tools/qdoc3/test/qt-cpp-ignore.qdocconf
+++ b/tools/qdoc3/test/qt-cpp-ignore.qdocconf
@@ -71,8 +71,9 @@ Cpp.ignoretokens        = QAXFACTORY_EXPORT \
                           QT_END_INCLUDE_NAMESPACE \
                           PHONON_EXPORT \
                           Q_DECLARATIVE_EXPORT \
-			  Q_GADGET \
-			  QWEBKIT_EXPORT
+			              Q_GADGET \
+            			  QWEBKIT_EXPORT \
+                          Q_INVOKABLE
 Cpp.ignoredirectives    = Q_DECLARE_HANDLE \
                           Q_DECLARE_INTERFACE \
                           Q_DECLARE_METATYPE \
diff --git a/tools/qmeegographicssystemhelper/qmeegolivepixmap.cpp b/tools/qmeegographicssystemhelper/qmeegolivepixmap.cpp
index b9dbb2b..5e36631 100644
--- a/tools/qmeegographicssystemhelper/qmeegolivepixmap.cpp
+++ b/tools/qmeegographicssystemhelper/qmeegolivepixmap.cpp
@@ -118,20 +118,20 @@ QImage* QMeeGoLivePixmap::lock()
 
     void *data = NULL; 
     int pitch = 0;
+    QImage::Format format;
 
     if (! QMeeGoRuntime::lockLiveTexture(d->handle)) {
         qWarning("Failed to lock a live texture!");
         return new QImage();    
     }
 
-    QMeeGoRuntime::queryLiveTexture(d->handle, &data, &pitch);
+    QMeeGoRuntime::queryLiveTexture(d->handle, &data, &pitch, &format);
     if (data == NULL || pitch == 0) {
         qWarning("Failed to query the live texture!");
         return new QImage();
     }
 
-    // FIXME Bug here! FIX FIX FIX FIX FIX FIX
-    return new QImage((uchar *) data, width(), height(), QImage::Format_RGB16);
+    return new QImage((uchar *) data, width(), height(), format);
 }
     
 void QMeeGoLivePixmap::release(QImage *img)
diff --git a/tools/qmeegographicssystemhelper/qmeegoruntime.cpp b/tools/qmeegographicssystemhelper/qmeegoruntime.cpp
index 44f9f58..215dffc 100644
--- a/tools/qmeegographicssystemhelper/qmeegoruntime.cpp
+++ b/tools/qmeegographicssystemhelper/qmeegoruntime.cpp
@@ -62,7 +62,7 @@ typedef Qt::HANDLE (*QMeeGoLiveTextureCreateFunc) (int w, int h, QImage::Format
 typedef bool (*QMeeGoLiveTextureLockFunc) (Qt::HANDLE h);
 typedef bool (*QMeeGoLiveTextureUnlockFunc) (Qt::HANDLE h);
 typedef void (*QMeeGoLiveTextureDestroyFunc) (Qt::HANDLE h);
-typedef void (*QMeeGoLiveTextureQueryFunc) (Qt::HANDLE h, void **data, int *pitch);
+typedef void (*QMeeGoLiveTextureQueryFunc) (Qt::HANDLE h, void **data, int *pitch, QImage::Format *format);
 typedef Qt::HANDLE (*QMeeGoLiveTextureToEglImageFunc) (Qt::HANDLE h);
 
 static QMeeGoImageToEglSharedImageFunc qt_meego_image_to_egl_shared_image = NULL;
@@ -216,11 +216,11 @@ void QMeeGoRuntime::destroyLiveTexture(Qt::HANDLE h)
     qt_meego_live_texture_destroy(h);
 }
 
-void QMeeGoRuntime::queryLiveTexture(Qt::HANDLE h, void **data, int *pitch)
+void QMeeGoRuntime::queryLiveTexture(Qt::HANDLE h, void **data, int *pitch, QImage::Format *format)
 {
     ENSURE_INITIALIZED;
     Q_ASSERT(qt_meego_live_texture_query);
-    qt_meego_live_texture_query(h, data, pitch);
+    qt_meego_live_texture_query(h, data, pitch, format);
 }
 
 Qt::HANDLE QMeeGoRuntime::liveTextureToEGLImage(Qt::HANDLE handle)
diff --git a/tools/qmeegographicssystemhelper/qmeegoruntime.h b/tools/qmeegographicssystemhelper/qmeegoruntime.h
index 048b9be..9f2d505 100644
--- a/tools/qmeegographicssystemhelper/qmeegoruntime.h
+++ b/tools/qmeegographicssystemhelper/qmeegoruntime.h
@@ -60,7 +60,7 @@ public:
     static bool lockLiveTexture(Qt::HANDLE h);
     static bool unlockLiveTexture(Qt::HANDLE h);
     static void destroyLiveTexture(Qt::HANDLE h);
-    static void queryLiveTexture(Qt::HANDLE h, void **data, int *pitch);
+    static void queryLiveTexture(Qt::HANDLE h, void **data, int *pitch, QImage::Format *format);
     static Qt::HANDLE liveTextureToEGLImage(Qt::HANDLE);
 
 private: