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:
  Fixed crash when destroying QGLWidget
  Prevent crash in GL 2 engine when stroking null rectangle.
  Compile fix.
  Documentation update for new switching events.
  Send QMeeGoSwitchEvent to toplevel widgets before switching graphics system.
  Doc: Fixing typo
  Fix possible missing glyphs in text when using GL engine

31 files changed, 247 insertions, 28 deletions

diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp
index d4a1248..92b54a0 100644
--- a/src/corelib/tools/qstring.cpp
+++ b/src/corelib/tools/qstring.cpp
@@ -3572,7 +3572,7 @@ static QByteArray toLatin1_helper(const QChar *data, int length)
             }
             length = length % 16;
         }
-#elif QT_ALWAYS_HAVE_NEON
+#elif defined(QT_ALWAYS_HAVE_NEON)
         // Refer to the documentation of the SSE2 implementation
         // this use eactly the same method as for SSE except:
         // 1) neon has unsigned comparison
diff --git a/src/gui/graphicsview/qgraphicstransform.cpp b/src/gui/graphicsview/qgraphicstransform.cpp
index 1f155c6..d495da2 100644
--- a/src/gui/graphicsview/qgraphicstransform.cpp
+++ b/src/gui/graphicsview/qgraphicstransform.cpp
@@ -54,7 +54,7 @@
     instances to one QGraphicsItem. Each QGraphicsTransform is applied in
     order, one at a time, to the QGraphicsItem it's assigned to.
 
-    QGraphicsTransform is particularily useful for animations. Whereas
+    QGraphicsTransform is particularly useful for animations. Whereas
     QGraphicsItem::setTransform() lets you assign any transform directly to an
     item, there is no direct way to interpolate between two different
     transformations (e.g., when transitioning between two states, each for
diff --git a/src/gui/kernel/qapplication_win.cpp b/src/gui/kernel/qapplication_win.cpp
index 78028eb..10c4ed6 100644
--- a/src/gui/kernel/qapplication_win.cpp
+++ b/src/gui/kernel/qapplication_win.cpp
@@ -3269,7 +3269,7 @@ bool QETWidget::translateMouseEvent(const MSG &msg)
         if (type == QEvent::MouseButtonPress
             && QApplication::activePopupWidget() != activePopupWidget
             && replayPopupMouseEvent) {
-            // the popup dissappeared. Replay the event
+            // the popup disappeared. Replay the event
             QWidget* w = QApplication::widgetAt(gpos.x, gpos.y);
             if (w && !QApplicationPrivate::isBlockedByModal(w)) {
                 Q_ASSERT(w->testAttribute(Qt::WA_WState_Created));
@@ -3506,7 +3506,7 @@ static void tabletInit(const quint64 uniqueId, const UINT csr_type, HCTX hTab)
 }
 #endif // QT_NO_TABLETEVENT
 
-// Update the "dynamic" informations of a cursor device (pen, airbrush, etc).
+// Update the "dynamic" information of a cursor device (pen, airbrush, etc).
 // The dynamic information is the information of QTabletDeviceData that can change
 // in time (eraser or pen if a device is turned around).
 #ifndef QT_NO_TABLETEVENT
diff --git a/src/gui/kernel/qclipboard_mac.cpp b/src/gui/kernel/qclipboard_mac.cpp
index 49a6cc8..482a3a3 100644
--- a/src/gui/kernel/qclipboard_mac.cpp
+++ b/src/gui/kernel/qclipboard_mac.cpp
@@ -623,7 +623,7 @@ QMacPasteboard::sync() const
 
 #ifdef DEBUG_PASTEBOARD
     if(fromGlobal)
-        qDebug("Pasteboard: Syncronize!");
+        qDebug("Pasteboard: Synchronize!");
 #endif
     return fromGlobal;
 }
diff --git a/src/gui/kernel/qevent.cpp b/src/gui/kernel/qevent.cpp
index eade02e..7fdb926 100644
--- a/src/gui/kernel/qevent.cpp
+++ b/src/gui/kernel/qevent.cpp
@@ -1970,7 +1970,7 @@ void QInputMethodEvent::setCommitString(const QString &commitString, int replace
   is usually given by a wheel on 4D mouse. If the device does not support a
   Z-axis, pass zero here.
 
-  The \a tangentialPressure paramater contins the tangential pressure of an air
+  The \a tangentialPressure parameter contins the tangential pressure of an air
   brush. If the device does not support tangential pressure, pass 0 here.
 
   \a rotation contains the device's rotation in degrees. 4D mice support
diff --git a/src/gui/kernel/qgesturemanager.cpp b/src/gui/kernel/qgesturemanager.cpp
index 9519447..46450b1 100644
--- a/src/gui/kernel/qgesturemanager.cpp
+++ b/src/gui/kernel/qgesturemanager.cpp
@@ -189,7 +189,7 @@ void QGestureManager::cleanupCachedGestures(QObject *target, Qt::GestureType typ
 QGesture *QGestureManager::getState(QObject *object, QGestureRecognizer *recognizer, Qt::GestureType type)
 {
     // if the widget is being deleted we should be careful not to
-    // create a new state, as it will create QWeakPointer which doesnt work
+    // create a new state, as it will create QWeakPointer which doesn't work
     // from the destructor.
     if (object->isWidgetType()) {
         if (static_cast<QWidget *>(object)->d_func()->data.in_destructor)
diff --git a/src/gui/kernel/qgesturemanager_p.h b/src/gui/kernel/qgesturemanager_p.h
index a5a3482..92310f5 100644
--- a/src/gui/kernel/qgesturemanager_p.h
+++ b/src/gui/kernel/qgesturemanager_p.h
@@ -101,7 +101,7 @@ private:
         NotGesture,
         MaybeGesture // this means timers are up and waiting for some
                      // more events, and input events are handled by
-                     // gesture recognizer explicitely
+                     // gesture recognizer explicitly
     } state;
 
     struct ObjectGesture
diff --git a/src/gui/kernel/qguiplatformplugin.cpp b/src/gui/kernel/qguiplatformplugin.cpp
index 2dd251b..c80c6d3 100644
--- a/src/gui/kernel/qguiplatformplugin.cpp
+++ b/src/gui/kernel/qguiplatformplugin.cpp
@@ -187,7 +187,7 @@ QString QGuiPlatformPlugin::styleName()
 #endif
 }
 
-/* return an aditional default palette  (only work on X11) */
+/* return an additional default palette  (only work on X11) */
 QPalette QGuiPlatformPlugin::palette()
 {
 #ifdef Q_WS_X11
diff --git a/src/gui/kernel/qkeymapper_mac.cpp b/src/gui/kernel/qkeymapper_mac.cpp
index 300e5ca..b8f08bf 100644
--- a/src/gui/kernel/qkeymapper_mac.cpp
+++ b/src/gui/kernel/qkeymapper_mac.cpp
@@ -765,7 +765,7 @@ bool QKeyMapperPrivate::translateKeyEvent(QWidget *widget, EventHandlerCallRef e
                                   &handled_event) == false)
         return handled_event;
     QString text(ourChar);
-    /* This is actually wrong - but unfortunatly it is the best that can be
+    /* This is actually wrong - but unfortunately it is the best that can be
        done for now because of the Control/Meta mapping problems */
     if (modifiers & (Qt::ControlModifier | Qt::MetaModifier)
         && !qApp->testAttribute(Qt::AA_MacDontSwapCtrlAndMeta)) {
diff --git a/src/gui/kernel/qkeysequence.cpp b/src/gui/kernel/qkeysequence.cpp
index 50b2354..bf3eddd 100644
--- a/src/gui/kernel/qkeysequence.cpp
+++ b/src/gui/kernel/qkeysequence.cpp
@@ -1105,7 +1105,7 @@ QKeySequence QKeySequence::mnemonic(const QString &text)
 #else
                     found = true;
                 } else {
-                    qWarning("QKeySequence::mnemonic: \"%s\" contains multiple occurences of '&'", qPrintable(text));
+                    qWarning("QKeySequence::mnemonic: \"%s\" contains multiple occurrences of '&'", qPrintable(text));
 #endif
                 }
             }
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index e22ec55..39c734e 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -8836,7 +8836,7 @@ void QWidget::mousePressEvent(QMouseEvent *event)
         QWidget* w;
         while ((w = QApplication::activePopupWidget()) && w != this){
             w->close();
-            if (QApplication::activePopupWidget() == w) // widget does not want to dissappear
+            if (QApplication::activePopupWidget() == w) // widget does not want to disappear
                 w->hide(); // hide at least
         }
         if (!rect().contains(event->pos())){
@@ -9305,7 +9305,7 @@ void QWidget::setInputMethodHints(Qt::InputMethodHints hints)
 #ifndef QT_NO_IM
     Q_D(QWidget);
     d->imHints = hints;
-    // Optimisation to update input context only it has already been created.
+    // Optimization to update input context only it has already been created.
     if (d->ic || qApp->d_func()->inputContext) {
         QInputContext *ic = inputContext();
         if (ic)
diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index cf4bdf1..97917ba 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -57,7 +57,7 @@
 #include <eikbtgpc.h>
 #endif
 
-// This is necessary in order to be able to perform delayed invokation on slots
+// This is necessary in order to be able to perform delayed invocation on slots
 // which take arguments of type WId.  One example is
 // QWidgetPrivate::_q_delayedDestroy, which is used to delay destruction of
 // CCoeControl objects until after the CONE event handler has finished running.
diff --git a/src/gui/kernel/qx11embed_x11.cpp b/src/gui/kernel/qx11embed_x11.cpp
index 9f1b1f8..e6e3bfb 100644
--- a/src/gui/kernel/qx11embed_x11.cpp
+++ b/src/gui/kernel/qx11embed_x11.cpp
@@ -1136,7 +1136,7 @@ void QX11EmbedContainer::paintEvent(QPaintEvent *)
 
 /*! \internal
 
-    Returns wether or not the windows' embedded flag is set.
+    Returns whether or not the windows' embedded flag is set.
 */
 bool QX11EmbedContainerPrivate::isEmbedded() const
 {
diff --git a/src/gui/util/qundostack.cpp b/src/gui/util/qundostack.cpp
index 919ac3c..04cfca9 100644
--- a/src/gui/util/qundostack.cpp
+++ b/src/gui/util/qundostack.cpp
@@ -441,7 +441,7 @@ bool QUndoStackPrivate::checkUndoLimit()
 
 /*!
     Constructs an empty undo stack with the parent \a parent. The
-    stack will initally be in the clean state. If \a parent is a
+    stack will initially be in the clean state. If \a parent is a
     QUndoGroup object, the stack is automatically added to the group.
 
     \sa push()
diff --git a/src/network/ssl/qsslsocket_openssl.cpp b/src/network/ssl/qsslsocket_openssl.cpp
index 70ef7ba..0479d83 100644
--- a/src/network/ssl/qsslsocket_openssl.cpp
+++ b/src/network/ssl/qsslsocket_openssl.cpp
@@ -728,7 +728,7 @@ void CSymbianCertificateRetriever::RunL()
         if (iStatus.Int() == KErrNone)
             iCertificates->append(iCertificateData);
         else
-            qWarning() << "CSymbianCertificateRetriever: failed to retreive a certificate, error " << iStatus.Int();
+            qWarning() << "CSymbianCertificateRetriever: failed to retrieve a certificate, error " << iStatus.Int();
         GetCertificateL();
         break;
     }
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index 1dcb773..37552ac 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -1212,6 +1212,9 @@ void QGL2PaintEngineExPrivate::stroke(const QVectorPath &path, const QPen &pen)
         stroker.process(dashStroke, pen, clip);
     }
 
+    if (!stroker.vertexCount())
+        return;
+
     if (opaque) {
         prepareForDraw(opaque);
         setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, stroker.vertices());
@@ -1479,6 +1482,8 @@ void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyp
     if (!cache || cache->cacheType() != glyphType) {
         cache = new QGLTextureGlyphCache(ctx, glyphType, QTransform());
         staticTextItem->fontEngine()->setGlyphCache(ctx, cache);
+    } else if (cache->context() == 0) { // Old context has been destroyed, new context has same ptr value
+        cache->setContext(ctx);
     }
 
     bool recreateVertexArrays = false;
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
index 919c542..28e8c40 100644
--- a/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
+++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl.cpp
@@ -54,11 +54,18 @@ extern Q_GUI_EXPORT bool qt_cleartype_enabled;
 
 QGLTextureGlyphCache::QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix)
     : QImageTextureGlyphCache(type, matrix)
-    , ctx(context)
+    , ctx(0)
     , m_width(0)
     , m_height(0)
     , m_filterMode(Nearest)
 {
+    setContext(context);
+}
+
+void QGLTextureGlyphCache::setContext(QGLContext *context)
+{
+    ctx = context;
+
     // broken FBO readback is a bug in the SGX 1.3 and 1.4 drivers for the N900 where
     // copying between FBO's is broken if the texture is either GL_ALPHA or POT. The
     // workaround is to use a system-memory copy of the glyph cache for this device.
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h
index e22146d..fa2b091 100644
--- a/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h
+++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h
@@ -90,6 +90,9 @@ public:
     FilterMode filterMode() const { return m_filterMode; }
     void setFilterMode(FilterMode m) { m_filterMode = m; }
 
+    void setContext(QGLContext *context);
+    QGLContext *context() const { return ctx; }
+
 public Q_SLOTS:
     void contextDestroyed(const QGLContext *context) {
         if (context == ctx) {
@@ -98,10 +101,20 @@ public Q_SLOTS:
                 // the context may not be current, so we cannot directly
                 // destroy the fbo and texture here, but since the context
                 // is about to be destroyed, the GL server will do the
-                // clean up for us anyway
+                // clean up for us anyway. We reset everything, so that the
+                // glyph cache object can be reused later by setting a new
+                // context on it.
                 m_fbo = 0;
                 m_texture = 0;
                 ctx = 0;
+                m_width = 0;
+                m_height = 0;
+                m_w = 0;
+                m_h = 0;
+                m_cx = 0;
+                m_cy = 0;
+                m_currentRowHeight = 0;
+                coords.clear();
             } else {
                 // since the context holding the texture is shared, and
                 // about to be destroyed, we have to transfer ownership
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
index 4742bdb..b46d428 100644
--- a/src/opengl/qgl_p.h
+++ b/src/opengl/qgl_p.h
@@ -506,7 +506,8 @@ private slots:
             // when you come to delete the context.
             QGLContextPrivate::unbindPixmapFromTexture(boundPixmap);
             glDeleteTextures(1, &id);
-            oldContext->makeCurrent();
+            if (oldContext)
+                oldContext->makeCurrent();
             return;
         }
 #endif
diff --git a/src/plugins/bearer/symbian/symbianengine.cpp b/src/plugins/bearer/symbian/symbianengine.cpp
index 33fa508..f025d86 100644
--- a/src/plugins/bearer/symbian/symbianengine.cpp
+++ b/src/plugins/bearer/symbian/symbianengine.cpp
@@ -981,7 +981,7 @@ void SymbianEngine::RunL()
     QMutexLocker locker(&mutex);
 
     if (iStatus != KErrCancel) {
-        // By default, start relistening notifications. Stop only if interesting event occured.
+        // By default, start relistening notifications. Stop only if interesting event occurred.
         iWaitingCommsDatabaseNotifications = true;
         RDbNotifier::TEvent event = STATIC_CAST(RDbNotifier::TEvent, iStatus.Int());
         switch (event) {
diff --git a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
index 063af13..507f70b 100644
--- a/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
+++ b/src/plugins/graphicssystems/meego/qmeegographicssystem.cpp
@@ -83,7 +83,7 @@ QWindowSurface* QMeeGoGraphicsSystem::createWindowSurface(QWidget *widget) const
 QPixmapData *QMeeGoGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
 {
     // Long story short: without this it's possible to hit an
-    // unitialized paintDevice due to a Qt bug too complex to even
+    // uninitialized paintDevice due to a Qt bug too complex to even
     // explain here... not to mention fix without going crazy.
     // MDK
     QGLShareContextScope ctx(qt_gl_share_widget()->context());
diff --git a/src/script/api/qscriptcontextinfo.cpp b/src/script/api/qscriptcontextinfo.cpp
index a90e014..8528dec 100644
--- a/src/script/api/qscriptcontextinfo.cpp
+++ b/src/script/api/qscriptcontextinfo.cpp
@@ -177,7 +177,7 @@ QScriptContextInfoPrivate::QScriptContextInfoPrivate(const QScriptContext *conte
            fileName = source->url();
     }
 
-    // Get the others informations:
+    // Get the others information:
     JSC::JSObject *callee = frame->callee();
     if (callee && callee->inherits(&JSC::InternalFunction::info))
         functionName = JSC::asInternalFunction(callee)->name(frame);
diff --git a/src/xmlpatterns/expr/qarithmeticexpression_p.h b/src/xmlpatterns/expr/qarithmeticexpression_p.h
index 66c1f13..6ff8219 100644
--- a/src/xmlpatterns/expr/qarithmeticexpression_p.h
+++ b/src/xmlpatterns/expr/qarithmeticexpression_p.h
@@ -62,7 +62,7 @@ QT_BEGIN_NAMESPACE
 namespace QPatternist
 {
     /**
-     * @short Implements arithmetics, such as multiplication and substraction.
+     * @short Implements arithmetics, such as multiplication and subtraction.
      *
      *
      * Optimizations: there's some operator/value combos that are no ops. For
diff --git a/tests/auto/collections/tst_collections.cpp b/tests/auto/collections/tst_collections.cpp
index f81535e..43e1a52 100644
--- a/tests/auto/collections/tst_collections.cpp
+++ b/tests/auto/collections/tst_collections.cpp
@@ -1222,7 +1222,7 @@ void tst_Collections::vector()
         }
     }
 
-    // this used to trigger an unitialized read in valgrind
+    // this used to trigger an uninitialized read in valgrind
     QVector<char> foo;
     foo.resize(144);
 
diff --git a/tests/auto/qgl/tst_qgl.cpp b/tests/auto/qgl/tst_qgl.cpp
index e38bf42..cc2cac9 100644
--- a/tests/auto/qgl/tst_qgl.cpp
+++ b/tests/auto/qgl/tst_qgl.cpp
@@ -97,6 +97,7 @@ private slots:
     void qglContextDefaultBindTexture();
     void textureCleanup();
     void threadImages();
+    void nullRectCrash();
 };
 
 tst_QGL::tst_QGL()
@@ -2375,6 +2376,28 @@ void tst_QGL::threadImages()
     delete widget;
 }
 
+void tst_QGL::nullRectCrash()
+{
+    if (!QGLFramebufferObject::hasOpenGLFramebufferObjects())
+        QSKIP("QGLFramebufferObject not supported on this platform", SkipSingle);
+
+    QGLWidget glw;
+    glw.makeCurrent();
+
+    QGLFramebufferObjectFormat fboFormat;
+    fboFormat.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
+
+    QGLFramebufferObject *fbo = new QGLFramebufferObject(128, 128, fboFormat);
+
+    QPainter fboPainter(fbo);
+
+    fboPainter.setPen(QPen(QColor(255, 127, 127, 127), 2));
+    fboPainter.setBrush(QColor(127, 255, 127, 127));
+    fboPainter.drawRect(QRectF());
+
+    fboPainter.end();
+}
+
 class tst_QGLDummy : public QObject
 {
 Q_OBJECT
diff --git a/tools/assistant/tools/assistant/helpenginewrapper.cpp b/tools/assistant/tools/assistant/helpenginewrapper.cpp
index a53a9ee..748ad2c 100644
--- a/tools/assistant/tools/assistant/helpenginewrapper.cpp
+++ b/tools/assistant/tools/assistant/helpenginewrapper.cpp
@@ -144,7 +144,7 @@ HelpEngineWrapper::HelpEngineWrapper(const QString &collectionFile)
 
     /*
      * Otherwise we will waste time if several new docs are found,
-     * because we will start to index them, only to be interupted
+     * because we will start to index them, only to be interrupted
      * by the next request. Also, there is a nasty SQLITE bug that will
      * cause the application to hang for minutes in that case.
      * This call is reverted by initalDocSetupDone(), which must be
diff --git a/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.cpp b/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.cpp
index d348e70..b660eb3 100644
--- a/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.cpp
+++ b/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.cpp
@@ -46,6 +46,7 @@
 #include <private/qgraphicssystem_runtime_p.h>
 #include <private/qpixmap_raster_p.h>
 #include "qmeegoruntime.h"
+#include "qmeegoswitchevent.h"
 
 QString QMeeGoGraphicsSystemHelper::runningGraphicsSystemName()
 {
@@ -81,8 +82,16 @@ void QMeeGoGraphicsSystemHelper::switchToMeeGo()
     if (QApplicationPrivate::instance()->graphics_system_name != QLatin1String("runtime"))
         qWarning("Can't switch to meego - switching only supported with 'runtime' graphics system.");
     else {
+        QMeeGoSwitchEvent willSwitchEvent(QLatin1String("meego"), QMeeGoSwitchEvent::WillSwitch);
+        foreach (QWidget *widget, QApplication::topLevelWidgets())
+            QCoreApplication::sendEvent(widget, &willSwitchEvent);
+
         QApplication *app = static_cast<QApplication *>(QCoreApplication::instance());
         app->setGraphicsSystem(QLatin1String("meego"));
+
+        QMeeGoSwitchEvent didSwitchEvent(QLatin1String("meego"), QMeeGoSwitchEvent::DidSwitch);
+        foreach (QWidget *widget, QApplication::topLevelWidgets())
+            QCoreApplication::sendEvent(widget, &didSwitchEvent);
     }
 }
 
@@ -94,8 +103,16 @@ void QMeeGoGraphicsSystemHelper::switchToRaster()
     if (QApplicationPrivate::instance()->graphics_system_name != QLatin1String("runtime"))
         qWarning("Can't switch to raster - switching only supported with 'runtime' graphics system.");
     else {
+        QMeeGoSwitchEvent willSwitchEvent(QLatin1String("raster"), QMeeGoSwitchEvent::WillSwitch);
+        foreach (QWidget *widget, QApplication::topLevelWidgets())
+            QCoreApplication::sendEvent(widget, &willSwitchEvent);
+
         QApplication *app = static_cast<QApplication *>(QCoreApplication::instance());
         app->setGraphicsSystem(QLatin1String("raster"));
+
+        QMeeGoSwitchEvent didSwitchEvent(QLatin1String("raster"), QMeeGoSwitchEvent::DidSwitch);
+        foreach (QWidget *widget, QApplication::topLevelWidgets())
+            QCoreApplication::sendEvent(widget, &didSwitchEvent);
     }
 }
 
diff --git a/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.h b/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.h
index 2baacbb..d47c829 100644
--- a/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.h
+++ b/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.h
@@ -102,6 +102,9 @@ public:
      When running with the 'runtime' graphics system, sets the currently active 
      system to 'meego'. The window surface and all the resources are automatically
      migrated to OpenGL. Will fail if the active graphics system is not 'runtime'.
+     Calling this function will emit QMeeGoSwitchEvent to the top level widgets.
+     Two events will be emitted for each switch -- one before the switch (QMeeGoSwitchEvent::WillSwitch)
+     and one after the switch (QMeeGoSwitchEvent::DidSwitch).
     */
     static void switchToMeeGo();
 
@@ -111,6 +114,9 @@ public:
      system to 'raster'. The window surface and the graphics resources (including the 
      EGL shared image resources) are automatically migrated back to the CPU. All OpenGL 
      resources (surface, context, cache, font cache) are automaticall anihilated.
+     Calling this function will emit QMeeGoSwitchEvent to the top level widgets.
+     Two events will be emitted for each switch -- one before the switch (QMeeGoSwitchEvent::WillSwitch)
+     and one after the switch (QMeeGoSwitchEvent::DidSwitch).
     */
     static void switchToRaster();
 
diff --git a/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.pro b/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.pro
index 161a31b..360847e 100644
--- a/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.pro
+++ b/tools/qmeegographicssystemhelper/qmeegographicssystemhelper.pro
@@ -6,5 +6,5 @@ include(../../src/qbase.pri)
 QT += gui
 INCLUDEPATH += '../../src/plugins/graphicssystems/meego'
 
-HEADERS = qmeegographicssystemhelper.h qmeegooverlaywidget.h qmeegolivepixmap.h qmeegoruntime.h qmeegolivepixmap_p.h qmeegofencesync.h qmeegofencesync_p.h
-SOURCES = qmeegographicssystemhelper.cpp qmeegooverlaywidget.cpp qmeegoruntime.cpp qmeegolivepixmap.cpp qmeegographicssystemhelper.h qmeegooverlaywidget.h qmeegolivepixmap.h qmeegoruntime.h qmeegolivepixmap_p.h qmeegofencesync.h qmeegofencesync_p.h qmeegofencesync.cpp
+HEADERS = qmeegographicssystemhelper.h qmeegooverlaywidget.h qmeegolivepixmap.h qmeegoruntime.h qmeegolivepixmap_p.h qmeegofencesync.h qmeegofencesync_p.h qmeegoswitchevent.h
+SOURCES = qmeegographicssystemhelper.cpp qmeegooverlaywidget.cpp qmeegoruntime.cpp qmeegolivepixmap.cpp qmeegographicssystemhelper.h qmeegooverlaywidget.h qmeegolivepixmap.h qmeegoruntime.h qmeegolivepixmap_p.h qmeegofencesync.h qmeegofencesync_p.h qmeegofencesync.cpp qmeegoswitchevent.cpp qmeegoswitchevent.h
diff --git a/tools/qmeegographicssystemhelper/qmeegoswitchevent.cpp b/tools/qmeegographicssystemhelper/qmeegoswitchevent.cpp
new file mode 100644
index 0000000..b136ce8
--- /dev/null
+++ b/tools/qmeegographicssystemhelper/qmeegoswitchevent.cpp
@@ -0,0 +1,58 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmeegoswitchevent.h"
+
+QMeeGoSwitchEvent::QMeeGoSwitchEvent(const QString &graphicsSystemName, QMeeGoSwitchEvent::State s) : QEvent((QEvent::Type) QMeeGoSwitchEvent::SwitchEvent)
+{
+    name = graphicsSystemName;
+    switchState = s;
+}
+
+QString QMeeGoSwitchEvent::graphicsSystemName() const
+{
+    return name;
+}
+
+QMeeGoSwitchEvent::State QMeeGoSwitchEvent::state() const
+{
+    return switchState;
+}
\ No newline at end of file
diff --git a/tools/qmeegographicssystemhelper/qmeegoswitchevent.h b/tools/qmeegographicssystemhelper/qmeegoswitchevent.h
new file mode 100644
index 0000000..2d8371e
--- /dev/null
+++ b/tools/qmeegographicssystemhelper/qmeegoswitchevent.h
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QEvent>
+#include <QString>
+
+//! A custom event representing a graphics system switch.
+/*!
+ This event is sent two times -- before the actual switch and after the switch.
+ The current mode of the event can be detected by looking at the State of the
+ event.
+
+ The end-user application can use the event to drop it's own allocated GL resources
+ when going to software mode.
+*/
+
+class QMeeGoSwitchEvent : public QEvent
+{
+public:
+
+    //! The state represented by this event.
+    enum State {
+        WillSwitch,
+        DidSwitch
+    };
+
+    //! The event type id to use to detect this event.
+    enum Type {
+        SwitchEvent = QEvent::User + 1024
+    };
+
+    //! Constructor for the event.
+    /*!
+     Creates a new event with the given name and the given state.
+    */
+    QMeeGoSwitchEvent(const QString &graphicsSystemName, State s);
+
+    //! Returns the name of the target graphics system.
+    /*!
+     Depending on the state, the name represents the system we're about to swtich to,
+     or the system we just switched to.
+    */
+    QString graphicsSystemName() const;
+
+    //! Returns the state represented by this event.
+    State state() const;
+
+private:
+    QString name;
+    State switchState;
+};