Merge branch '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.6

34 files changed, 536 insertions, 161 deletions

diff --git a/src/3rdparty/phonon/mmf/mmf_videoplayer.cpp b/src/3rdparty/phonon/mmf/mmf_videoplayer.cpp
index 2059fbe..b6f53ae 100644
--- a/src/3rdparty/phonon/mmf/mmf_videoplayer.cpp
+++ b/src/3rdparty/phonon/mmf/mmf_videoplayer.cpp
@@ -50,6 +50,8 @@ MMF::VideoPlayer::VideoPlayer()
         ,   m_window(0)
         ,   m_totalTime(0)
         ,   m_pendingChanges(false)
+        ,   m_dsaActive(false)
+        ,   m_dsaWasActive(false)
 {
     construct();
 }
@@ -61,6 +63,7 @@ MMF::VideoPlayer::VideoPlayer(const AbstractPlayer& player)
         ,   m_window(0)
         ,   m_totalTime(0)
         ,   m_pendingChanges(false)
+        ,   m_dsaActive(false)
 {
     construct();
 }
@@ -86,6 +89,9 @@ void MMF::VideoPlayer::construct()
             ))
         );
 
+    // CVideoPlayerUtility::NewL starts DSA
+    m_dsaActive = true;
+
     if (KErrNone != err)
         changeState(ErrorState);
 
@@ -315,8 +321,7 @@ void MMF::VideoPlayer::getVideoWindow()
         m_videoOutput->dump();
 
         initVideoOutput();
-        m_window = m_videoOutput->videoWindow();
-        updateVideoRect();
+        videoWindowChanged();
     } else
         // Top-level window
         m_window = QApplication::activeWindow()->effectiveWinId()->DrawableWindow();
@@ -349,6 +354,18 @@ void MMF::VideoPlayer::initVideoOutput()
     Q_ASSERT(connected);
 
     connected = connect(
+        m_videoOutput, SIGNAL(beginVideoWindowNativePaint()),
+        this, SLOT(suspendDirectScreenAccess())
+    );
+    Q_ASSERT(connected);
+
+    connected = connect(
+        m_videoOutput, SIGNAL(endVideoWindowNativePaint()),
+        this, SLOT(resumeDirectScreenAccess())
+    );
+    Q_ASSERT(connected);
+
+    connected = connect(
         m_videoOutput, SIGNAL(aspectRatioChanged()),
         this, SLOT(aspectRatioChanged())
     );
@@ -370,12 +387,48 @@ void MMF::VideoPlayer::videoWindowChanged()
     TRACE_ENTRY("state %d", state());
 
     m_window = m_videoOutput->videoWindow();
-
     updateVideoRect();
 
     TRACE_EXIT_0();
 }
 
+void MMF::VideoPlayer::suspendDirectScreenAccess()
+{
+    m_dsaWasActive = stopDirectScreenAccess();
+}
+
+void MMF::VideoPlayer::resumeDirectScreenAccess()
+{
+    if(m_dsaWasActive) {
+        startDirectScreenAccess();
+        m_dsaWasActive = false;
+    }
+}
+
+void MMF::VideoPlayer::startDirectScreenAccess()
+{
+    if(!m_dsaActive) {
+        TRAPD(err, m_player->StartDirectScreenAccessL());
+        if(KErrNone == err)
+            m_dsaActive = true;
+        else
+            setError(NormalError);
+    }
+}
+
+bool MMF::VideoPlayer::stopDirectScreenAccess()
+{
+    const bool dsaWasActive = m_dsaActive;
+    if(m_dsaActive) {
+        TRAPD(err, m_player->StopDirectScreenAccessL());
+        if(KErrNone == err)
+            m_dsaActive = false;
+        else
+            setError(NormalError);
+    }
+    return dsaWasActive;
+}
+
 // Helper function for aspect ratio / scale mode handling
 QSize scaleToAspect(const QSize& srcRect, int aspectWidth, int aspectHeight)
 {
@@ -393,7 +446,18 @@ QSize scaleToAspect(const QSize& srcRect, int aspectWidth, int aspectHeight)
 void MMF::VideoPlayer::updateVideoRect()
 {
     QRect videoRect;
-    const QRect windowRect = m_videoOutput->videoWindowRect();
+    QRect windowRect = m_videoOutput->videoWindowRect();
+
+    // Clip to physical window size
+    // This is due to a defect in the layout when running on S60 3.2, which
+    // results in the rectangle of the video widget extending outside the
+    // screen in certain circumstances.  These include the initial startup
+    // of the mediaplayer demo in portrait mode.  When this rectangle is
+    // passed to the CVideoPlayerUtility, no video is rendered.
+    const TSize screenSize = m_screenDevice.SizeInPixels();
+    const QRect screenRect(0, 0, screenSize.iWidth, screenSize.iHeight);
+    windowRect = windowRect.intersected(screenRect);
+
     const QSize windowSize = windowRect.size();
 
     // Calculate size of smallest rect which contains video frame size
@@ -553,6 +617,7 @@ void MMF::VideoPlayer::applyVideoWindowChange()
             TRACE("SetDisplayWindowL err %d", err);
             setError(NormalError);
         } else {
+            m_dsaActive = true;
             TRAP(err, m_player->SetScaleFactorL(m_scaleWidth, m_scaleHeight, antialias));
             if(KErrNone != err) {
                 TRACE("SetScaleFactorL (2) err %d", err);
diff --git a/src/3rdparty/phonon/mmf/mmf_videoplayer.h b/src/3rdparty/phonon/mmf/mmf_videoplayer.h
index 599bb88..abb1da8 100644
--- a/src/3rdparty/phonon/mmf/mmf_videoplayer.h
+++ b/src/3rdparty/phonon/mmf/mmf_videoplayer.h
@@ -72,6 +72,8 @@ public Q_SLOTS:
     void videoWindowChanged();
     void aspectRatioChanged();
     void scaleModeChanged();
+    void suspendDirectScreenAccess();
+    void resumeDirectScreenAccess();
 
 private:
     void construct();
@@ -89,6 +91,9 @@ private:
     void applyPendingChanges();
     void applyVideoWindowChange();
 
+    void startDirectScreenAccess();
+    bool stopDirectScreenAccess();
+
     // AbstractMediaPlayer
     virtual int numberOfMetaDataEntries() const;
     virtual QPair<QString, QString> metaDataEntry(int index) const;
@@ -111,6 +116,8 @@ private:
     qint64                              m_totalTime;
 
     bool                                m_pendingChanges;
+    bool                                m_dsaActive;
+    bool                                m_dsaWasActive;
 
 };
 
diff --git a/src/3rdparty/phonon/mmf/objectdump_symbian.cpp b/src/3rdparty/phonon/mmf/objectdump_symbian.cpp
index 2efebdb..edad537 100644
--- a/src/3rdparty/phonon/mmf/objectdump_symbian.cpp
+++ b/src/3rdparty/phonon/mmf/objectdump_symbian.cpp
@@ -46,7 +46,7 @@ QList<QByteArray> QAnnotatorWidget::annotation(const QObject& object)
 
             stream << "widget (Symbian): ";
             stream << "activated " << extra->activated << ' ';
-            stream << "disableBlit " << extra->disableBlit << ' ';
+            stream << "nativePaintMode " << extra->nativePaintMode << ' ';
 
             stream.flush();
             result.append(array);
diff --git a/src/3rdparty/phonon/mmf/videooutput.cpp b/src/3rdparty/phonon/mmf/videooutput.cpp
index ddf30de..119dcb1 100644
--- a/src/3rdparty/phonon/mmf/videooutput.cpp
+++ b/src/3rdparty/phonon/mmf/videooutput.cpp
@@ -34,6 +34,8 @@ along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <coecntrl.h>
 
+#include <coemain.h>    // for CCoeEnv
+
 QT_BEGIN_NAMESPACE
 
 using namespace Phonon;
@@ -72,12 +74,8 @@ MMF::VideoOutput::VideoOutput
     setAttribute(Qt::WA_NoSystemBackground, true);
     setAutoFillBackground(false);
 
-    // Causes QSymbianControl::Draw not to BitBlt this widget's region of the
-    // backing store.  Since the backing store is (by default) a 16MU bitmap,
-    // blitting it results in this widget's screen region in the final
-    // framebuffer having opaque alpha values.  This in turn causes the video
-    // to be invisible when running on the target device.
-    qt_widget_private(this)->extraData()->disableBlit = true;
+    qt_widget_private(this)->extraData()->nativePaintMode = QWExtra::ZeroFill;
+    qt_widget_private(this)->extraData()->receiveNativePaintEvents = true;
 
     getVideoWindowRect();
     registerForAncestorMoved();
@@ -288,5 +286,18 @@ void MMF::VideoOutput::dump() const
 #endif
 }
 
+void MMF::VideoOutput::beginNativePaintEvent(const QRect& /*controlRect*/)
+{
+    emit beginVideoWindowNativePaint();
+}
+
+void MMF::VideoOutput::endNativePaintEvent(const QRect& /*controlRect*/)
+{
+    // Ensure that draw ops are executed into the WSERV output framebuffer
+    CCoeEnv::Static()->WsSession().Flush();
+
+    emit endVideoWindowNativePaint();
+}
+
 QT_END_NAMESPACE
 
diff --git a/src/3rdparty/phonon/mmf/videooutput.h b/src/3rdparty/phonon/mmf/videooutput.h
index 6dfe69d..2788401 100644
--- a/src/3rdparty/phonon/mmf/videooutput.h
+++ b/src/3rdparty/phonon/mmf/videooutput.h
@@ -63,10 +63,16 @@ public:
     // Debugging output
     void dump() const;
 
+public Q_SLOTS:
+    void beginNativePaintEvent(const QRect& /*controlRect*/);
+    void endNativePaintEvent(const QRect& /*controlRect*/);
+
 Q_SIGNALS:
     void videoWindowChanged();
     void aspectRatioChanged();
     void scaleModeChanged();
+    void beginVideoWindowNativePaint();
+    void endVideoWindowNativePaint();
 
 protected:
     // Override QWidget functions
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index 2e9f839..6623e0c 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -44,11 +44,11 @@
 
 #include <stddef.h>
 
-#define QT_VERSION_STR   "4.6.0"
+#define QT_VERSION_STR   "4.6.1"
 /*
    QT_VERSION is (major << 16) + (minor << 8) + patch.
 */
-#define QT_VERSION 0x040600
+#define QT_VERSION 0x040601
 /*
    can be used like #if (QT_VERSION >= QT_VERSION_CHECK(4, 4, 0))
 */
diff --git a/src/corelib/kernel/qmath.h b/src/corelib/kernel/qmath.h
index a9e4378..820f424 100644
--- a/src/corelib/kernel/qmath.h
+++ b/src/corelib/kernel/qmath.h
@@ -76,6 +76,16 @@ inline int qFloor(qreal v)
         return int(floor(v));
 }
 
+inline qreal qFabs(qreal v)
+{
+#ifdef QT_USE_MATH_H_FLOATS
+    if(sizeof(qreal) == sizeof(float))
+        return fabsf(float(v));
+    else
+#endif
+        return fabs(v);
+}
+
 inline qreal qSin(qreal v)
 {
 #ifdef QT_USE_MATH_H_FLOATS
@@ -96,6 +106,16 @@ inline qreal qCos(qreal v)
         return cos(v);
 }
 
+inline qreal qTan(qreal v)
+{
+#ifdef QT_USE_MATH_H_FLOATS
+    if (sizeof(qreal) == sizeof(float))
+        return tanf(float(v));
+    else
+#endif
+        return tan(v);
+}
+
 inline qreal qAcos(qreal v)
 {
 #ifdef QT_USE_MATH_H_FLOATS
@@ -106,6 +126,36 @@ inline qreal qAcos(qreal v)
         return acos(v);
 }
 
+inline qreal qAsin(qreal v)
+{
+#ifdef QT_USE_MATH_H_FLOATS
+    if (sizeof(qreal) == sizeof(float))
+        return asinf(float(v));
+    else
+#endif
+        return asin(v);
+}
+
+inline qreal qAtan(qreal v)
+{
+#ifdef QT_USE_MATH_H_FLOATS
+    if(sizeof(qreal) == sizeof(float))
+        return atanf(float(v));
+    else
+#endif
+        return atan(v);
+}
+
+inline qreal qAtan2(qreal x, qreal y)
+{
+#ifdef QT_USE_MATH_H_FLOATS
+    if(sizeof(qreal) == sizeof(float))
+        return atan2f(float(x), float(y));
+    else
+#endif
+        return atan2(x, y);
+}
+
 inline qreal qSqrt(qreal v)
 {
 #ifdef QT_USE_MATH_H_FLOATS
@@ -126,6 +176,13 @@ inline qreal qLn(qreal v)
         return log(v);
 }
 
+inline qreal qExp(qreal v)
+{
+    // only one signature
+    // exists, exp(double)
+    return exp(v);
+}
+
 inline qreal qPow(qreal x, qreal y)
 {
 #ifdef QT_USE_MATH_H_FLOATS
diff --git a/src/corelib/tools/qvector.h b/src/corelib/tools/qvector.h
index f0de98d..201e7b3 100644
--- a/src/corelib/tools/qvector.h
+++ b/src/corelib/tools/qvector.h
@@ -324,7 +324,7 @@ void QVector<T>::detach_helper()
 { realloc(d->size, d->alloc); }
 template <typename T>
 void QVector<T>::reserve(int asize)
-{ if (asize > d->alloc || d->ref != 1) realloc(d->size, asize); d->capacity = 1; }
+{ if (asize > d->alloc) realloc(d->size, asize); if (d->ref == 1) d->capacity = 1; }
 template <typename T>
 void QVector<T>::resize(int asize)
 { realloc(asize, (asize > d->alloc || (!d->capacity && asize < d->size && asize < (d->alloc >> 1))) ?
@@ -441,6 +441,7 @@ void QVector<T>::free(Data *x)
 template <typename T>
 void QVector<T>::realloc(int asize, int aalloc)
 {
+    Q_ASSERT(asize <= aalloc);
     T *pOld;
     T *pNew;
     union { QVectorData *d; Data *p; } x;
@@ -496,7 +497,8 @@ void QVector<T>::realloc(int asize, int aalloc)
             pOld = p->array + x.d->size;
             pNew = x.p->array + x.d->size;
             // copy objects from the old array into the new array
-            while (x.d->size < qMin(asize, d->size)) {
+            const int toMove = qMin(asize, d->size);
+            while (x.d->size < toMove) {
                 new (pNew++) T(*pOld++);
                 x.d->size++;
             }
diff --git a/src/gui/dialogs/qprogressdialog.cpp b/src/gui/dialogs/qprogressdialog.cpp
index f5024bb..98b15e9 100644
--- a/src/gui/dialogs/qprogressdialog.cpp
+++ b/src/gui/dialogs/qprogressdialog.cpp
@@ -424,10 +424,6 @@ void QProgressDialog::setCancelButton(QPushButton *cancelButton)
 {
     Q_D(QProgressDialog);
     delete d->cancel;
-#ifdef QT_SOFTKEYS_ENABLED
-    delete d->cancelAction;
-    d->cancelAction = 0;
-#endif
     d->cancel = cancelButton;
     if (cancelButton) {
         if (cancelButton->parentWidget() == this) {
diff --git a/src/gui/graphicsview/qgraphicswidget.cpp b/src/gui/graphicsview/qgraphicswidget.cpp
index f6c06d5..fe569f4 100644
--- a/src/gui/graphicsview/qgraphicswidget.cpp
+++ b/src/gui/graphicsview/qgraphicswidget.cpp
@@ -1301,7 +1301,8 @@ bool QGraphicsWidget::event(QEvent *event)
     case QEvent::Polish:
         polishEvent();
         d->polished = true;
-        d->updateFont(d->font);
+        if (!d->font.isCopyOf(QApplication::font()))
+            d->updateFont(d->font);
         break;
     case QEvent::WindowActivate:
     case QEvent::WindowDeactivate:
diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp
index 985a20b..617cfe5 100644
--- a/src/gui/image/qpixmap.cpp
+++ b/src/gui/image/qpixmap.cpp
@@ -1165,7 +1165,7 @@ QPixmap QPixmap::grabWidget(QWidget * widget, const QRect &rect)
 Qt::HANDLE QPixmap::handle() const
 {
 #if defined(Q_WS_X11)
-    if (data->classId() == QPixmapData::X11Class)
+    if (data && data->classId() == QPixmapData::X11Class)
         return static_cast<const QX11PixmapData*>(data.constData())->handle();
 #endif
     return 0;
@@ -1216,7 +1216,7 @@ QPixmap::QPixmap(const QImage& image)
     if (!qt_pixmap_thread_test())
         return;
 
-    if (data->pixelType() == QPixmapData::BitmapType)
+    if (data && data->pixelType() == QPixmapData::BitmapType)
         *this = QBitmap::fromImage(image);
     else
         *this = fromImage(image);
diff --git a/src/gui/itemviews/qabstractitemview.cpp b/src/gui/itemviews/qabstractitemview.cpp
index ad15655..acfeff8 100644
--- a/src/gui/itemviews/qabstractitemview.cpp
+++ b/src/gui/itemviews/qabstractitemview.cpp
@@ -2552,7 +2552,9 @@ void QAbstractItemView::verticalScrollbarValueChanged(int value)
     Q_D(QAbstractItemView);
     if (verticalScrollBar()->maximum() == value && d->model->canFetchMore(d->root))
         d->model->fetchMore(d->root);
-    d->checkMouseMove(viewport()->mapFromGlobal(QCursor::pos()));
+    QPoint posInVp = viewport()->mapFromGlobal(QCursor::pos());
+    if (viewport()->rect().contains(posInVp))
+        d->checkMouseMove(posInVp);
 }
 
 /*!
@@ -2563,7 +2565,9 @@ void QAbstractItemView::horizontalScrollbarValueChanged(int value)
     Q_D(QAbstractItemView);
     if (horizontalScrollBar()->maximum() == value && d->model->canFetchMore(d->root))
         d->model->fetchMore(d->root);
-    d->checkMouseMove(viewport()->mapFromGlobal(QCursor::pos()));
+    QPoint posInVp = viewport()->mapFromGlobal(QCursor::pos());
+    if (viewport()->rect().contains(posInVp))
+        d->checkMouseMove(posInVp);
 }
 
 /*!
diff --git a/src/gui/kernel/qapplication_s60.cpp b/src/gui/kernel/qapplication_s60.cpp
index 89d961c..ab57c32 100644
--- a/src/gui/kernel/qapplication_s60.cpp
+++ b/src/gui/kernel/qapplication_s60.cpp
@@ -823,6 +823,12 @@ void QSymbianControl::Draw(const TRect& controlRect) const
     if (!engine)
         return;
 
+    const bool sendNativePaintEvents = qwidget->d_func()->extraData()->receiveNativePaintEvents;
+    if (sendNativePaintEvents) {
+        const QRect r = qt_TRect2QRect(controlRect);
+        QMetaObject::invokeMethod(qwidget, "beginNativePaintEvent", Qt::DirectConnection, Q_ARG(QRect, r));
+    }
+
     // Map source rectangle into coordinates of the backing store.
     const QPoint controlBase(controlRect.iTl.iX, controlRect.iTl.iY);
     const QPoint backingStoreBase = qwidget->mapTo(qwidget->window(), controlBase);
@@ -833,14 +839,48 @@ void QSymbianControl::Draw(const TRect& controlRect) const
         CFbsBitmap *bitmap = s60Surface->symbianBitmap();
         CWindowGc &gc = SystemGc();
 
-        if(!qwidget->d_func()->extraData()->disableBlit) {
+        switch(qwidget->d_func()->extraData()->nativePaintMode) {
+        case QWExtra::Disable:
+            // Do nothing
+            break;
+
+        case QWExtra::Blit:
             if (qwidget->d_func()->isOpaque)
                 gc.SetDrawMode(CGraphicsContext::EDrawModeWriteAlpha);
             gc.BitBlt(controlRect.iTl, bitmap, backingStoreRect);
+            break;
+
+        case QWExtra::ZeroFill:
+            if (Window().DisplayMode() == EColor16MA) {
+                gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
+                gc.SetDrawMode(CGraphicsContext::EDrawModeWriteAlpha);
+                gc.SetBrushColor(TRgb::Color16MA(0));
+                gc.Clear(controlRect);
+            } else {
+                gc.SetBrushColor(TRgb(0x000000));
+                gc.Clear(controlRect);
+            };
+            break;
+
+        default:
+            Q_ASSERT(false);
         }
     } else {
         surface->flush(qwidget, QRegion(qt_TRect2QRect(backingStoreRect)), QPoint());
     }
+
+    if (sendNativePaintEvents) {
+        const QRect r = qt_TRect2QRect(controlRect);
+        // The draw ops aren't actually sent to WSERV until the graphics
+        // context is deactivated, which happens in the function calling
+        // this one.  We therefore delay the delivery of endNativePaintEvent,
+        // to ensure that drawing has completed by the time the widget
+        // receives the event.  Note that, if the widget needs to ensure
+        // that the draw ops have actually been executed into the output
+        // framebuffer, a call to RWsSession::Flush is required in the
+        // endNativePaintEvent implementation.
+        QMetaObject::invokeMethod(qwidget, "endNativePaintEvent", Qt::QueuedConnection, Q_ARG(QRect, r));
+    }
 }
 
 void QSymbianControl::SizeChanged()
diff --git a/src/gui/kernel/qsoftkeymanager.cpp b/src/gui/kernel/qsoftkeymanager.cpp
index 775d773..1acc9b3 100644
--- a/src/gui/kernel/qsoftkeymanager.cpp
+++ b/src/gui/kernel/qsoftkeymanager.cpp
@@ -190,7 +190,7 @@ bool QSoftKeyManager::event(QEvent *e)
                 }
 
                 QWidget *parent = source->parentWidget();
-                if (parent && softKeys.isEmpty())
+                if (parent && softKeys.isEmpty() && !source->isWindow())
                     source = parent;
                 else
                     break;
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index b389054..d19c574 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -366,7 +366,8 @@ bool QWidget::hasEditFocus() const
     normally; otherwise, Qt::Key_Up and Qt::Key_Down are used to
     change focus.
 
-    This feature is only available in Qt for Embedded Linux.
+    This feature is only available in Qt for Embedded Linux and Qt
+    for Symbian.
 
     \sa hasEditFocus(), QApplication::keypadNavigationEnabled()
 */
@@ -6045,6 +6046,11 @@ bool QWidget::hasFocus() const
     (Nothing happens if the focus in and focus out widgets are the
     same.)
 
+    \note On embedded platforms, setFocus() will not cause an input panel
+    to be opened by the input method. If you want this to happen, you
+    have to send a QEvent::RequestSoftwareInputPanel event to the
+    widget yourself.
+
     setFocus() gives focus to a widget regardless of its focus policy,
     but does not clear any keyboard grab (see grabKeyboard()).
 
@@ -6057,7 +6063,7 @@ bool QWidget::hasFocus() const
 
     \sa hasFocus(), clearFocus(), focusInEvent(), focusOutEvent(),
     setFocusPolicy(), focusWidget(), QApplication::focusWidget(), grabKeyboard(),
-    grabMouse(), {Keyboard Focus}
+    grabMouse(), {Keyboard Focus}, QEvent::RequestSoftwareInputPanel
 */
 
 void QWidget::setFocus(Qt::FocusReason reason)
diff --git a/src/gui/kernel/qwidget_p.h b/src/gui/kernel/qwidget_p.h
index 66efcb5..04cf4bb 100644
--- a/src/gui/kernel/qwidget_p.h
+++ b/src/gui/kernel/qwidget_p.h
@@ -230,12 +230,42 @@ struct QWExtra {
 #elif defined(Q_OS_SYMBIAN) // <----------------------------------------------------- Symbian
     uint activated : 1; // RWindowBase::Activated has been called
 
-    // If set, QSymbianControl::Draw does not blit this widget
-    // This is to allow, for use cases such as video, widgets which, from the Qt point
-    // of view, are just placeholders in the scene.  For these widgets, any necessary
-    // drawing to the UI framebuffer is done by the relevant Symbian subsystem.  For
-    // video rendering, this would be an MMF controller, or MDF post-processor.
-    uint disableBlit : 1;
+    /**
+     * Defines the behaviour of QSymbianControl::Draw.
+     */
+    enum NativePaintMode {
+        /**
+         * Normal drawing mode: blits the required region of the backing store
+         * via WSERV.
+         */
+        Blit,
+
+        /**
+         * Disable drawing for this widget.
+         */
+        Disable,
+
+        /**
+         * Paint zeros into the WSERV framebuffer, using BitGDI APIs.  For windows
+         * with an EColor16MU display mode, zero is written only into the R, G and B
+         * channels of the pixel.
+         */
+        ZeroFill,
+
+        Default = Blit
+    };
+
+    NativePaintMode nativePaintMode : 2;
+
+    /**
+     * If this bit is set, each native widget receives the signals from the
+     * Symbian control immediately before and immediately after draw ops are
+     * sent to the window server for this control:
+     *      void beginNativePaintEvent(const QRect &paintRect);
+     *      void endNativePaintEvent(const QRect &paintRect);
+     */
+    uint receiveNativePaintEvents : 1;
+
 #endif
 };
 
diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index 359df2a..37614c7 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -881,7 +881,8 @@ void QWidgetPrivate::deleteTLSysExtra()
 void QWidgetPrivate::createSysExtra()
 {
     extra->activated = 0;
-    extra->disableBlit = 0;
+    extra->nativePaintMode = QWExtra::Default;
+    extra->receiveNativePaintEvents = 0;
 }
 
 void QWidgetPrivate::deleteSysExtra()
diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index 7d1c109..9a0e319 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -56,6 +56,20 @@ QT_BEGIN_NAMESPACE
  * class QVectorPath
  *
  */
+QVectorPath::~QVectorPath()
+{
+    if (m_hints & ShouldUseCacheHint) {
+        CacheEntry *e = m_cache;
+        while (e) {
+            if (e->data)
+                e->cleanup(e->engine, e->data);
+            CacheEntry *n = e->next;
+            delete e;
+            e = n;
+        }
+    }
+}
+
 
 QRectF QVectorPath::controlPointRect() const
 {
@@ -94,7 +108,7 @@ QRectF QVectorPath::controlPointRect() const
 
 
 QVectorPath::CacheEntry *QVectorPath::addCacheData(QPaintEngineEx *engine, void *data,
-                                                   qvectorpath_cache_cleanup cleanup) {
+                                                   qvectorpath_cache_cleanup cleanup) const{
     Q_ASSERT(!lookupCacheData(engine));
     if ((m_hints & IsCachedHint) == 0) {
         m_cache = 0;
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index 48629d1..30f8c9e 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -284,7 +284,7 @@ bool QPainterPrivate::attachPainterPrivate(QPainter *q, QPaintDevice *pdev)
 
     // Update matrix.
     if (q->d_ptr->state->WxF) {
-        q->d_ptr->state->redirectionMatrix *= q->d_ptr->state->worldMatrix;
+        q->d_ptr->state->redirectionMatrix = q->d_ptr->state->matrix;
         q->d_ptr->state->redirectionMatrix.translate(-offset.x(), -offset.y());
         q->d_ptr->state->worldMatrix = QTransform();
         q->d_ptr->state->WxF = false;
@@ -5886,7 +5886,12 @@ void QPainter::drawText(const QRectF &r, const QString &text, const QTextOption
     Draws the text item \a ti at position \a p.
 */
 
-/*! \internal
+/*!
+    \fn void QPainter::drawTextItem(const QPointF &p, const QTextItem &ti)
+
+    \internal
+    \since 4.1
+
     Draws the text item \a ti at position \a p.
 
     This method ignores the painters background mode and
@@ -5899,34 +5904,57 @@ void QPainter::drawText(const QRectF &r, const QString &text, const QTextOption
     ignored aswell. You'll need to pass in the correct flags to get
     underlining and strikeout.
 */
-static QPainterPath generateWavyPath(qreal minWidth, qreal maxRadius, QPaintDevice *device)
+
+static QPixmap generateWavyPixmap(qreal maxRadius, const QPen &pen)
 {
-    extern int qt_defaultDpi();
+    const qreal radiusBase = qMax(qreal(1), maxRadius);
+
+    QString key = QLatin1String("WaveUnderline-");
+    key += pen.color().name();
+    key += QLatin1Char('-');
+    key += QString::number(radiusBase);
+
+    QPixmap pixmap;
+    if (QPixmapCache::find(key, pixmap))
+        return pixmap;
+
+    const qreal halfPeriod = qMax(qreal(2), qreal(radiusBase * 1.61803399)); // the golden ratio
+    const int width = qCeil(100 / (2 * halfPeriod)) * (2 * halfPeriod);
+    const int radius = qFloor(radiusBase);
+
     QPainterPath path;
 
-    bool up = true;
-    const qreal radius = qMax(qreal(.5), qMin(qreal(1.25 * device->logicalDpiY() / qt_defaultDpi()), maxRadius));
-    qreal xs, ys;
-    int i = 0;
-    path.moveTo(0, radius);
-    do {
-        xs = i*(2*radius);
-        ys = 0;
+    qreal xs = 0;
+    qreal ys = radius;
 
-        qreal remaining = minWidth - xs;
-        qreal angle = 180;
+    while (xs < width) {
+        xs += halfPeriod;
+        ys = -ys;
+        path.quadTo(xs - halfPeriod / 2, ys, xs, 0);
+    }
 
-        // cut-off at the last arc segment
-        if (remaining < 2 * radius)
-            angle = 180 * remaining / (2 * radius);
+    pixmap = QPixmap(width, radius * 2);
+    pixmap.fill(Qt::transparent);
+    {
+        QPen wavePen = pen;
+        wavePen.setCapStyle(Qt::SquareCap);
+
+        // This is to protect against making the line too fat, as happens on Mac OS X
+        // due to it having a rather thick width for the regular underline.
+        const qreal maxPenWidth = .8 * radius;
+        if (wavePen.widthF() > maxPenWidth)
+            wavePen.setWidth(maxPenWidth);
 
-        path.arcTo(xs, ys, 2*radius, 2*radius, 180, up ? angle : -angle);
+        QPainter imgPainter(&pixmap);
+        imgPainter.setPen(wavePen);
+        imgPainter.setRenderHint(QPainter::Antialiasing);
+        imgPainter.translate(0, radius);
+        imgPainter.drawPath(path);
+    }
 
-        up = !up;
-        ++i;
-    } while (xs + 2*radius < minWidth);
+    QPixmapCache::insert(key, pixmap);
 
-    return path;
+    return pixmap;
 }
 
 static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, const QTextItemInt &ti)
@@ -5947,9 +5975,11 @@ static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, const
     pen.setCapStyle(Qt::FlatCap);
 
     QLineF line(pos.x(), pos.y(), pos.x() + ti.width.toReal(), pos.y());
+
+    const qreal underlineOffset = fe->underlinePosition().toReal();
     // deliberately ceil the offset to avoid the underline coming too close to
     // the text above it.
-    const qreal underlinePos = pos.y() + qCeil(fe->underlinePosition().toReal());
+    const qreal underlinePos = pos.y() + qCeil(underlineOffset);
 
     if (underlineStyle == QTextCharFormat::SpellCheckUnderline) {
         underlineStyle = QTextCharFormat::UnderlineStyle(QApplication::style()->styleHint(QStyle::SH_SpellCheckUnderlineStyle));
@@ -5957,16 +5987,18 @@ static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, const
 
     if (underlineStyle == QTextCharFormat::WaveUnderline) {
         painter->save();
-        painter->setRenderHint(QPainter::Antialiasing);
-        painter->translate(pos.x(), underlinePos);
+        painter->translate(0, pos.y() + 1);
 
         QColor uc = ti.charFormat.underlineColor();
         if (uc.isValid())
-            painter->setPen(uc);
+            pen.setColor(uc);
 
-        painter->drawPath(generateWavyPath(ti.width.toReal(),
-                                           fe->underlinePosition().toReal(),
-                                           painter->device()));
+        // Adapt wave to underlineOffset or pen width, whatever is larger, to make it work on all platforms
+        const QPixmap wave = generateWavyPixmap(qMax(underlineOffset, pen.widthF()), pen);
+        const int descent = (int) ti.descent.toReal();
+
+        painter->setBrushOrigin(painter->brushOrigin().x(), 0);
+        painter->fillRect(pos.x(), 0, qCeil(ti.width.toReal()), qMin(wave.height(), descent), wave);
         painter->restore();
     } else if (underlineStyle != QTextCharFormat::NoUnderline) {
         QLineF underLine(line.x1(), underlinePos, line.x2(), underlinePos);
@@ -6001,10 +6033,6 @@ static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, const
     painter->setBrush(oldBrush);
 }
 
-/*!
-    \internal
-    \since 4.1
-*/
 void QPainter::drawTextItem(const QPointF &p, const QTextItem &_ti)
 {
 #ifdef QT_DEBUG_DRAW
diff --git a/src/gui/painting/qvectorpath_p.h b/src/gui/painting/qvectorpath_p.h
index ec27970..5eaddf4 100644
--- a/src/gui/painting/qvectorpath_p.h
+++ b/src/gui/painting/qvectorpath_p.h
@@ -68,7 +68,7 @@ QT_MODULE(Gui)
 
 class QPaintEngineEx;
 
-typedef void (*qvectorpath_cache_cleanup)(void *data);
+typedef void (*qvectorpath_cache_cleanup)(QPaintEngineEx *engine, void *data);
 
 struct QRealRect {
     qreal x1, y1, x2, y2;
@@ -118,6 +118,8 @@ public:
     {
     }
 
+    ~QVectorPath();
+
     QRectF controlPointRect() const;
 
     inline Hint shape() const { return (Hint) (m_hints & ShapeMask); }
@@ -128,6 +130,7 @@ public:
     inline bool hasImplicitClose() const { return m_hints & ImplicitClose; }
     inline bool hasWindingFill() const { return m_hints & WindingFill; }
 
+    inline void makeCacheable() const { m_hints |= ShouldUseCacheHint; m_cache = 0; }
     inline uint hints() const { return m_hints; }
 
     inline const QPainterPath::ElementType *elements() const { return m_elements; }
@@ -146,9 +149,9 @@ public:
         CacheEntry *next;
     };
 
-    CacheEntry *addCacheData(QPaintEngineEx *engine, void *data, qvectorpath_cache_cleanup cleanup);
+    CacheEntry *addCacheData(QPaintEngineEx *engine, void *data, qvectorpath_cache_cleanup cleanup) const;
     inline CacheEntry *lookupCacheData(QPaintEngineEx *engine) const {
-        Q_ASSERT(m_hints & IsCachedHint);
+        Q_ASSERT(m_hints & ShouldUseCacheHint);
         CacheEntry *e = m_cache;
         while (e) {
             if (e->engine == engine)
@@ -162,14 +165,14 @@ public:
 private:
     Q_DISABLE_COPY(QVectorPath)
 
-    CacheEntry *m_cache;
-
     const QPainterPath::ElementType *m_elements;
     const qreal *m_points;
     const int m_count;
 
     mutable uint m_hints;
     mutable QRealRect m_cp_rect;
+
+    mutable CacheEntry *m_cache;
 };
 
 Q_GUI_EXPORT const QVectorPath &qtVectorPathForPath(const QPainterPath &path);
diff --git a/src/gui/styles/qwindowsstyle.cpp b/src/gui/styles/qwindowsstyle.cpp
index 30f2f35..0a59d6d 100644
--- a/src/gui/styles/qwindowsstyle.cpp
+++ b/src/gui/styles/qwindowsstyle.cpp
@@ -213,10 +213,12 @@ bool QWindowsStyle::eventFilter(QObject *o, QEvent *e)
     case QEvent::StyleChange:
     case QEvent::Show:
         if (QProgressBar *bar = qobject_cast<QProgressBar *>(o)) {
-            d->bars << bar;
-            if (d->bars.size() == 1) {
-                Q_ASSERT(d->animationFps> 0);
-                d->animateTimer = startTimer(1000 / d->animationFps);
+            if (!d->bars.contains(bar)) {
+                d->bars << bar;
+                if (d->bars.size() == 1) {
+                    Q_ASSERT(d->animationFps> 0);
+                    d->animateTimer = startTimer(1000 / d->animationFps);
+                }
             }
         }
         break;
diff --git a/src/gui/styles/qwindowsxpstyle.cpp b/src/gui/styles/qwindowsxpstyle.cpp
index fe7f5d7..0767083 100644
--- a/src/gui/styles/qwindowsxpstyle.cpp
+++ b/src/gui/styles/qwindowsxpstyle.cpp
@@ -623,8 +623,7 @@ void QWindowsXPStylePrivate::drawBackground(XPThemeData &themeData)
 
     painter->save();
 
-    QMatrix m = painter->matrix();
-    bool complexXForm = m.m11() != 1.0 || m.m22() != 1.0 || m.m12() != 0.0 || m.m21() != 0.0;
+    bool complexXForm = painter->deviceTransform().type() > QTransform::TxTranslate;
 
     bool translucentToplevel = false;
     QPaintDevice *pdev = painter->device();
diff --git a/src/gui/widgets/qdockarealayout.cpp b/src/gui/widgets/qdockarealayout.cpp
index 07914b2..0a26a77 100644
--- a/src/gui/widgets/qdockarealayout.cpp
+++ b/src/gui/widgets/qdockarealayout.cpp
@@ -1167,7 +1167,8 @@ bool QDockAreaLayoutInfo::insertGap(const QList<int> &path, QLayoutItem *dockWid
 
             QDockAreaLayoutInfo *subinfo = item.subinfo;
             QLayoutItem *widgetItem = item.widgetItem;
-            QRect r = subinfo == 0 ? dockedGeometry(widgetItem->widget()) : subinfo->rect;
+            QPlaceHolderItem *placeHolderItem = item.placeHolderItem;
+            QRect r = subinfo == 0 ? widgetItem ? dockedGeometry(widgetItem->widget()) : placeHolderItem->topLevelRect : subinfo->rect;
 
             Qt::Orientation opposite = o == Qt::Horizontal ? Qt::Vertical : Qt::Horizontal;
 #ifdef QT_NO_TABBAR
@@ -1176,13 +1177,15 @@ bool QDockAreaLayoutInfo::insertGap(const QList<int> &path, QLayoutItem *dockWid
             QDockAreaLayoutInfo *new_info
                 = new QDockAreaLayoutInfo(sep, dockPos, opposite, tabBarShape, mainWindow);
 
+            //item become a new top-level
             item.subinfo = new_info;
             item.widgetItem = 0;
+            item.placeHolderItem = 0;
 
             QDockAreaLayoutItem new_item
                 = widgetItem == 0
                     ? QDockAreaLayoutItem(subinfo)
-                    : QDockAreaLayoutItem(widgetItem);
+                    : widgetItem ? QDockAreaLayoutItem(widgetItem) : QDockAreaLayoutItem(placeHolderItem);
             new_item.size = pick(opposite, r.size());
             new_item.pos = pick(opposite, r.topLeft());
             new_info->item_list.append(new_item);
diff --git a/src/gui/widgets/qfontcombobox.cpp b/src/gui/widgets/qfontcombobox.cpp
index d601f81..b976b94 100644
--- a/src/gui/widgets/qfontcombobox.cpp
+++ b/src/gui/widgets/qfontcombobox.cpp
@@ -269,9 +269,8 @@ void QFontComboBoxPrivate::_q_updateModel()
 void QFontComboBoxPrivate::_q_currentChanged(const QString &text)
 {
     Q_Q(QFontComboBox);
-    QFont newFont(text);
-    if (currentFont.family() != newFont.family()) {
-        currentFont = newFont;
+    if (currentFont.family() != text) {
+        currentFont.setFamily(text);
         emit q->currentFontChanged(currentFont);
     }
 }
diff --git a/src/gui/widgets/qlineedit_p.cpp b/src/gui/widgets/qlineedit_p.cpp
index d03c003..4437fef 100644
--- a/src/gui/widgets/qlineedit_p.cpp
+++ b/src/gui/widgets/qlineedit_p.cpp
@@ -103,12 +103,12 @@ void QLineEditPrivate::_q_handleWindowActivate()
 void QLineEditPrivate::_q_textEdited(const QString &text)
 {
     Q_Q(QLineEdit);
+    emit q->textEdited(text);
 #ifndef QT_NO_COMPLETER
-    if (control->completer() &&
-            control->completer()->completionMode() != QCompleter::InlineCompletion)
+    if (control->completer()
+        && control->completer()->completionMode() != QCompleter::InlineCompletion)
         control->complete(-1); // update the popup on cut/paste/del
 #endif
-    emit q->textEdited(text);
 }
 
 void QLineEditPrivate::_q_cursorPositionChanged(int from, int to)
diff --git a/src/gui/widgets/qplaintextedit.cpp b/src/gui/widgets/qplaintextedit.cpp
index c7759e8..eae8b7d 100644
--- a/src/gui/widgets/qplaintextedit.cpp
+++ b/src/gui/widgets/qplaintextedit.cpp
@@ -1802,6 +1802,9 @@ void QPlainTextEdit::paintEvent(QPaintEvent *e)
     QTextBlock block = firstVisibleBlock();
     qreal maximumWidth = document()->documentLayout()->documentSize().width();
 
+    // Set a brush origin so that the WaveUnderline knows where the wave started
+    painter.setBrushOrigin(offset);
+
     // keep right margin clean from full-width selection
     int maxX = offset.x() + qMax((qreal)viewportRect.width(), maximumWidth)
                - document()->documentMargin();
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
index 1fe3999..ee1a797 100644
--- a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
@@ -48,7 +48,7 @@ QT_BEGIN_NAMESPACE
 void QGL2PEXVertexArray::clear()
 {
     vertexArray.reset();
-    vertexArrayStops.clear();
+    vertexArrayStops.reset();
     boundingRectDirty = true;
 }
 
@@ -101,7 +101,7 @@ void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseSc
         boundingRectDirty = false;
     }
 
-    if (!outline)
+    if (!outline && !path.isConvex())
         addCentroid(path, 0);
 
     int lastMoveTo = vertexArray.size();
@@ -120,15 +120,14 @@ void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseSc
 //         qDebug("QVectorPath has element types");
 
         for (int i=1; i<path.elementCount(); ++i) {
-            const QPainterPath::ElementType elementType = elements[i];
-            switch (elementType) {
+            switch (elements[i]) {
             case QPainterPath::MoveToElement:
                 if (!outline)
                     addClosingLine(lastMoveTo);
 //                qDebug("element[%d] is a MoveToElement", i);
-                vertexArrayStops.append(vertexArray.size());
+                vertexArrayStops.add(vertexArray.size());
                 if (!outline) {
-                    addCentroid(path, i);
+                    if (!path.isConvex()) addCentroid(path, i);
                     lastMoveTo = vertexArray.size();
                 }
                 lineToArray(points[i].x(), points[i].y()); // Add the moveTo as a new vertex
@@ -137,11 +136,22 @@ void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseSc
 //                qDebug("element[%d] is a LineToElement", i);
                 lineToArray(points[i].x(), points[i].y());
                 break;
-            case QPainterPath::CurveToElement:
-//                qDebug("element[%d] is a CurveToElement", i);
-                curveToArray(points[i], points[i+1], points[i+2], curveInverseScale);
-                i+=2;
-                break;
+            case QPainterPath::CurveToElement: {
+                QBezier b = QBezier::fromPoints(*(((const QPointF *) points) + i - 1),
+                                                points[i],
+                                                points[i+1],
+                                                points[i+2]);
+                QRectF bounds = b.bounds();
+                // threshold based on same algorithm as in qtriangulatingstroker.cpp
+                int threshold = qMin<float>(64, qMax(bounds.width(), bounds.height()) * 3.14f / (curveInverseScale * 6));
+                if (threshold < 3) threshold = 3;
+                qreal one_over_threshold_minus_1 = 1.f / (threshold - 1);
+                for (int t=0; t<threshold; ++t) {
+                    QPointF pt = b.pointAt(t * one_over_threshold_minus_1);
+                    lineToArray(pt.x(), pt.y());
+                }
+                i += 2;
+                break; }
             default:
                 break;
             }
@@ -150,7 +160,7 @@ void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseSc
 
     if (!outline)
         addClosingLine(lastMoveTo);
-    vertexArrayStops.append(vertexArray.size());
+    vertexArrayStops.add(vertexArray.size());
 }
 
 void QGL2PEXVertexArray::lineToArray(const GLfloat x, const GLfloat y)
@@ -167,35 +177,4 @@ void QGL2PEXVertexArray::lineToArray(const GLfloat x, const GLfloat y)
         minY = y;
 }
 
-void QGL2PEXVertexArray::curveToArray(const QGLPoint &cp1, const QGLPoint &cp2, const QGLPoint &ep, GLfloat inverseScale)
-{
-    qreal inverseScaleHalf = inverseScale / 2;
-
-    QBezier beziers[32];
-    beziers[0] = QBezier::fromPoints(vertexArray.last(), cp1, cp2, ep);
-    QBezier *b = beziers;
-    while (b >= beziers) {
-        // check if we can pop the top bezier curve from the stack
-        qreal l = qAbs(b->x4 - b->x1) + qAbs(b->y4 - b->y1);
-        qreal d;
-        if (l > inverseScale) {
-            d = qAbs( (b->x4 - b->x1)*(b->y1 - b->y2) - (b->y4 - b->y1)*(b->x1 - b->x2) )
-                + qAbs( (b->x4 - b->x1)*(b->y1 - b->y3) - (b->y4 - b->y1)*(b->x1 - b->x3) );
-            d /= l;
-        } else {
-            d = qAbs(b->x1 - b->x2) + qAbs(b->y1 - b->y2) +
-                qAbs(b->x1 - b->x3) + qAbs(b->y1 - b->y3);
-        }
-        if (d < inverseScaleHalf || b == beziers + 31) {
-            // good enough, we pop it off and add the endpoint
-            lineToArray(b->x4, b->y4);
-            --b;
-        } else {
-            // split, second half of the polygon goes lower into the stack
-            b->split(b+1, b);
-           ++b;
-        }
-    }
-}
-
 QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
index 719904f..98eaa91 100644
--- a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
@@ -108,23 +108,23 @@ public:
     void clear();
 
     QGLPoint*        data() {return vertexArray.data();}
-    QVector<int>&   stops() {return vertexArrayStops;}
+    int *stops() const { return vertexArrayStops.data(); }
+    int stopCount() const { return vertexArrayStops.size(); }
     QGLRect         boundingRect() const;
 
+    int vertexCount() const { return vertexArray.size(); }
+
     void lineToArray(const GLfloat x, const GLfloat y);
 
 private:
     QDataBuffer<QGLPoint> vertexArray;
-    QVector<int>          vertexArrayStops;
+    QDataBuffer<int>      vertexArrayStops;
 
     GLfloat     maxX;
     GLfloat     maxY;
     GLfloat     minX;
     GLfloat     minY;
     bool        boundingRectDirty;
-
-    inline void curveToArray(const QGLPoint &cp1, const QGLPoint &cp2, const QGLPoint &ep, GLfloat inverseScale);
-
     void addClosingLine(int index);
     void addCentroid(const QVectorPath &path, int subPathIndex);
 };
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index 15702ba..3fce384 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -62,6 +62,8 @@
     and use the correct program when we really need it.
 */
 
+// #define QT_OPENGL_CACHE_AS_VBOS
+
 #include "qpaintengineex_opengl2_p.h"
 
 #include <string.h> //for memcpy
@@ -344,6 +346,13 @@ extern QImage qt_imageForBrush(int brushStyle, bool invert);
 QGL2PaintEngineExPrivate::~QGL2PaintEngineExPrivate()
 {
     delete shaderManager;
+
+    while (pathCaches.size()) {
+        QVectorPath::CacheEntry *e = *(pathCaches.constBegin());
+        e->cleanup(e->engine, e->data);
+        e->data = 0;
+        e->engine = 0;
+    }
 }
 
 void QGL2PaintEngineExPrivate::updateTextureFilter(GLenum target, GLenum wrapMode, bool smoothPixmapTransform, GLuint id)
@@ -846,6 +855,30 @@ void QGL2PaintEngineExPrivate::transferMode(EngineMode newMode)
     mode = newMode;
 }
 
+struct QGL2PEVectorPathCache
+{
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+    GLuint vbo;
+#else
+    float *vertices;
+#endif
+    int vertexCount;
+    GLenum primitiveType;
+    qreal iscale;
+};
+
+void qopengl2paintengine_cleanup_vectorpath(QPaintEngineEx *engine, void *data)
+{
+    QGL2PEVectorPathCache *c = (QGL2PEVectorPathCache *) data;
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+    QGL2PaintEngineExPrivate *d = QGL2PaintEngineExPrivate::getData((QGL2PaintEngineEx *) engine);
+    d->unusedVBOSToClean << c->vbo;
+#else
+    qFree(c->vertices);
+#endif
+    delete c;
+}
+
 // Assumes everything is configured for the brush you want to use
 void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
 {
@@ -863,10 +896,74 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
         prepareForDraw(currentBrush->isOpaque());
         composite(rect);
     } else if (path.isConvex()) {
-        vertexCoordinateArray.clear();
-        vertexCoordinateArray.addPath(path, inverseScale, false);
-        prepareForDraw(currentBrush->isOpaque());
-        drawVertexArrays(vertexCoordinateArray, GL_TRIANGLE_FAN);
+
+        if (path.isCacheable()) {
+            QVectorPath::CacheEntry *data = path.lookupCacheData(q);
+            QGL2PEVectorPathCache *cache;
+
+            if (data) {
+                cache = (QGL2PEVectorPathCache *) data->data;
+                // Check if scale factor is exceeded for curved paths and generate curves if so...
+                if (path.isCurved()) {
+                    qreal scaleFactor = cache->iscale / inverseScale;
+                    if (scaleFactor < 0.5 || scaleFactor > 2.0) {
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+                        glDeleteBuffers(1, &cache->vbo);
+                        cache->vbo = 0;
+#else
+                        qFree(cache->vertices);
+#endif
+                        cache->vertexCount = 0;
+                    }
+                }
+            } else {
+                cache = new QGL2PEVectorPathCache;
+                cache->vertexCount = 0;
+                data = const_cast<QVectorPath &>(path).addCacheData(q, cache, qopengl2paintengine_cleanup_vectorpath);
+            }
+
+            // Flatten the path at the current scale factor and fill it into the cache struct.
+            if (!cache->vertexCount) {
+                vertexCoordinateArray.clear();
+                vertexCoordinateArray.addPath(path, inverseScale, false);
+                int vertexCount = vertexCoordinateArray.vertexCount();
+                int floatSizeInBytes = vertexCount * 2 * sizeof(float);
+                cache->vertexCount = vertexCount;
+                cache->primitiveType = GL_TRIANGLE_FAN;
+                cache->iscale = inverseScale;               
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+                glGenBuffers(1, &cache->vbo);
+                glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
+                glBufferData(GL_ARRAY_BUFFER, floatSizeInBytes, vertexCoordinateArray.data(), GL_STATIC_DRAW);
+#else
+                cache->vertices = (float *) qMalloc(floatSizeInBytes);
+                memcpy(cache->vertices, vertexCoordinateArray.data(), floatSizeInBytes);
+#endif
+            }
+
+            prepareForDraw(currentBrush->isOpaque());
+            glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+            glBindBuffer(GL_ARRAY_BUFFER, cache->vbo);
+            glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, false, 0, 0);
+#else
+            glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, false, 0, cache->vertices);
+#endif
+            glDrawArrays(cache->primitiveType, 0, cache->vertexCount);
+
+        } else {
+      //        printf(" - Marking path as cachable...\n");
+            // Tag it for later so that if the same path is drawn twice, it is assumed to be static and thus cachable
+            // ### Remove before release...
+            static bool do_vectorpath_cache = qgetenv("QT_OPENGL_NO_PATH_CACHE").isEmpty();
+            if (do_vectorpath_cache)
+                path.makeCacheable();
+            vertexCoordinateArray.clear();
+            vertexCoordinateArray.addPath(path, inverseScale, false);
+            prepareForDraw(currentBrush->isOpaque());
+            drawVertexArrays(vertexCoordinateArray, GL_TRIANGLE_FAN);
+        }
+
     } else {
         // The path is too complicated & needs the stencil technique
         vertexCoordinateArray.clear();
@@ -908,7 +1005,8 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
 
 void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data,
                                                           int count,
-                                                          const QVector<int> *stops,
+                                                          int *stops,
+                                                          int stopCount,
                                                           const QGLRect &bounds,
                                                           StencilFillMode mode)
 {
@@ -966,7 +1064,7 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data,
         // Dec. for back-facing "holes"
         glStencilOpSeparate(GL_BACK, GL_KEEP, GL_DECR_WRAP, GL_DECR_WRAP);
         glStencilMask(~GL_STENCIL_HIGH_BIT);
-        drawVertexArrays(data, stops, GL_TRIANGLE_FAN);
+        drawVertexArrays(data, stops, stopCount, GL_TRIANGLE_FAN);
 
         if (q->state()->clipTestEnabled) {
             // Clear high bit of stencil outside of path
@@ -978,7 +1076,7 @@ void QGL2PaintEngineExPrivate::fillStencilWithVertexArray(const float *data,
     } else if (mode == OddEvenFillMode) {
         glStencilMask(GL_STENCIL_HIGH_BIT);
         glStencilOp(GL_KEEP, GL_KEEP, GL_INVERT); // Simply invert the stencil bit
-        drawVertexArrays(data, stops, GL_TRIANGLE_FAN);
+        drawVertexArrays(data, stops, stopCount, GL_TRIANGLE_FAN);
 
     } else { // TriStripStrokeFillMode
         Q_ASSERT(count && !stops); // tristrips generated directly, so no vertexArray or stops
@@ -1137,7 +1235,7 @@ void QGL2PaintEngineExPrivate::composite(const QGLRect& boundingRect)
 }
 
 // Draws the vertex array as a set of <vertexArrayStops.size()> triangle fans.
-void QGL2PaintEngineExPrivate::drawVertexArrays(const float *data, const QVector<int> *stops,
+void QGL2PaintEngineExPrivate::drawVertexArrays(const float *data, int *stops, int stopCount,
                                                 GLenum primitive)
 {
     // Now setup the pointer to the vertex array:
@@ -1145,7 +1243,8 @@ void QGL2PaintEngineExPrivate::drawVertexArrays(const float *data, const QVector
     glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, data);
 
     int previousStop = 0;
-    foreach(int stop, *stops) {
+    for (int i=0; i<stopCount; ++i) {
+        int stop = stops[i];
 /*
         qDebug("Drawing triangle fan for vertecies %d -> %d:", previousStop, stop-1);
         for (int i=previousStop; i<stop; ++i)
@@ -1304,7 +1403,7 @@ void QGL2PaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
         QRectF bounds = path.controlPointRect().adjusted(-extra, -extra, extra, extra);
 
         d->fillStencilWithVertexArray(d->stroker.vertices(), d->stroker.vertexCount() / 2,
-                                      0, bounds, QGL2PaintEngineExPrivate::TriStripStrokeFillMode);
+                                      0, 0, bounds, QGL2PaintEngineExPrivate::TriStripStrokeFillMode);
 
         glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
 
@@ -1754,7 +1853,8 @@ bool QGL2PaintEngineEx::begin(QPaintDevice *pdev)
     d->device->beginPaint();
 
 #if !defined(QT_OPENGL_ES_2)
-    bool success = qt_resolve_version_2_0_functions(d->ctx);
+    bool success = qt_resolve_version_2_0_functions(d->ctx)
+                   && qt_resolve_buffer_extensions(d->ctx);
     Q_ASSERT(success);
     Q_UNUSED(success);
 #endif
@@ -1815,6 +1915,13 @@ bool QGL2PaintEngineEx::end()
     delete d->shaderManager;
     d->shaderManager = 0;
 
+#ifdef QT_OPENGL_CACHE_AS_VBOS
+    if (!d->unusedVBOSToClean.isEmpty()) {
+        glDeleteBuffers(d->unusedVBOSToClean.size(), d->unusedVBOSToClean.constData());
+        d->unusedVBOSToClean.clear();
+    }
+#endif
+
     return false;
 }
 
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
index 9720723..0084476 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2_p.h
@@ -195,18 +195,18 @@ public:
     void drawTexture(const QGLRect& dest, const QGLRect& src, const QSize &textureSize, bool opaque, bool pattern = false);
     void drawCachedGlyphs(const QPointF &p, QFontEngineGlyphCache::Type glyphType, const QTextItemInt &ti);
 
-    void drawVertexArrays(const float *data, const QVector<int> *stops, GLenum primitive);
+    void drawVertexArrays(const float *data, int *stops, int stopCount, GLenum primitive);
     void drawVertexArrays(QGL2PEXVertexArray &vertexArray, GLenum primitive) {
-        drawVertexArrays((const float *) vertexArray.data(), &vertexArray.stops(), primitive);
+        drawVertexArrays((const float *) vertexArray.data(), vertexArray.stops(), vertexArray.stopCount(), primitive);
     }
 
         // ^ draws whatever is in the vertex array
     void composite(const QGLRect& boundingRect);
         // ^ Composites the bounding rect onto dest buffer
 
-    void fillStencilWithVertexArray(const float *data, int count, const QVector<int> *stops, const QGLRect &bounds, StencilFillMode mode);
+    void fillStencilWithVertexArray(const float *data, int count, int *stops, int stopCount, const QGLRect &bounds, StencilFillMode mode);
     void fillStencilWithVertexArray(QGL2PEXVertexArray& vertexArray, bool useWindingFill) {
-        fillStencilWithVertexArray((const float *) vertexArray.data(), 0, &vertexArray.stops(),
+        fillStencilWithVertexArray((const float *) vertexArray.data(), 0, vertexArray.stops(), vertexArray.stopCount(),
                                    vertexArray.boundingRect(),
                                    useWindingFill ? WindingFillMode : OddEvenFillMode);
     }
@@ -221,6 +221,7 @@ public:
     void restoreDepthRangeForRenderText();
 
     static QGLEngineShaderManager* shaderManagerForEngine(QGL2PaintEngineEx *engine) { return engine->d_func()->shaderManager; }
+    static QGL2PaintEngineExPrivate *getData(QGL2PaintEngineEx *engine) { return engine->d_func(); }
 
     QGL2PaintEngineEx* q;
     QGLPaintDevice* device;
@@ -294,6 +295,9 @@ public:
     QScopedPointer<QPixmapFilter> fastBlurFilter;
     QScopedPointer<QPixmapFilter> dropShadowFilter;
     QScopedPointer<QPixmapFilter> fastDropShadowFilter;
+
+    QSet<QVectorPath::CacheEntry *> pathCaches;
+    QVector<GLuint> unusedVBOSToClean;
 };
 
 QT_END_NAMESPACE
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index d5ca218..5ada125 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -2277,13 +2277,21 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G
 #ifdef QGL_BIND_TEXTURE_DEBUG
             printf(" - flipping bits over y (%d ms)\n", time.elapsed());
 #endif
-        int ipl = img.bytesPerLine() / 4;
-        int h = img.height();
-        for (int y=0; y<h/2; ++y) {
-            int *a = (int *) img.scanLine(y);
-            int *b = (int *) img.scanLine(h - y - 1);
-            for (int x=0; x<ipl; ++x)
-                qSwap(a[x], b[x]);
+        if (img.isDetached()) {
+            int ipl = img.bytesPerLine() / 4;
+            int h = img.height();
+            for (int y=0; y<h/2; ++y) {
+                int *a = (int *) img.scanLine(y);
+                int *b = (int *) img.scanLine(h - y - 1);
+                for (int x=0; x<ipl; ++x)
+                    qSwap(a[x], b[x]);
+            }
+        } else {
+            // Create a new image and copy across.  If we use the
+            // above in-place code then a full copy of the image is
+            // made before the lines are swapped, which processes the
+            // data twice.  This version should only do it once.
+            img = img.mirrored();
         }
     }
 
diff --git a/src/plugins/qpluginbase.pri b/src/plugins/qpluginbase.pri
index a3abc98..b66f8f9 100644
--- a/src/plugins/qpluginbase.pri
+++ b/src/plugins/qpluginbase.pri
@@ -1,6 +1,6 @@
 TEMPLATE = lib
 isEmpty(QT_MAJOR_VERSION) {
-   VERSION=4.6.0
+   VERSION=4.6.1
 } else {
    VERSION=$${QT_MAJOR_VERSION}.$${QT_MINOR_VERSION}.$${QT_PATCH_VERSION}
 }
diff --git a/src/qbase.pri b/src/qbase.pri
index 0aae24d..d1a2a75 100644
--- a/src/qbase.pri
+++ b/src/qbase.pri
@@ -4,7 +4,7 @@ INCLUDEPATH *= $$QMAKE_INCDIR_QT/$$TARGET #just for today to have some compat
 isEmpty(QT_ARCH):!isEmpty(ARCH):QT_ARCH=$$ARCH #another compat that will rot for change #215700
 TEMPLATE	= lib
 isEmpty(QT_MAJOR_VERSION) {
-   VERSION=4.6.0
+   VERSION=4.6.1
 } else {
    VERSION=$${QT_MAJOR_VERSION}.$${QT_MINOR_VERSION}.$${QT_PATCH_VERSION}
 }
diff --git a/src/s60installs/s60installs.pro b/src/s60installs/s60installs.pro
index 2d9c489..37adfa9 100644
--- a/src/s60installs/s60installs.pro
+++ b/src/s60installs/s60installs.pro
@@ -90,7 +90,7 @@ symbian: {
     }
 
     contains(QT_CONFIG, phonon): {
-       qtlibraries.sources += Phonon.dll
+       qtlibraries.sources += phonon.dll
     }
 
     contains(QT_CONFIG, script): {