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

31 files changed, 846 insertions, 283 deletions

diff --git a/src/gui/effects/qgraphicseffect.cpp b/src/gui/effects/qgraphicseffect.cpp
index 91641b0..96d35b0 100644
--- a/src/gui/effects/qgraphicseffect.cpp
+++ b/src/gui/effects/qgraphicseffect.cpp
@@ -253,7 +253,24 @@ bool QGraphicsEffectSource::isPixmap() const
 */
 QPixmap QGraphicsEffectSource::pixmap(Qt::CoordinateSystem system, QPoint *offset) const
 {
-    return d_func()->pixmap(system, offset);
+    Q_D(const QGraphicsEffectSource);
+
+    QPixmap pm;
+    if (d->m_cachedSystem == system)
+        QPixmapCache::find(d->m_cacheKey, &pm);
+
+    if (pm.isNull()) {
+        pm = d->pixmap(system, &d->m_cachedOffset);
+        d->m_cachedSystem = system;
+
+        d->invalidateCache();
+        d->m_cacheKey = QPixmapCache::insert(pm);
+    }
+
+    if (offset)
+        *offset = d->m_cachedOffset;
+
+    return pm;
 }
 
 /*!
diff --git a/src/gui/effects/qgraphicseffect.h b/src/gui/effects/qgraphicseffect.h
index c5d3ede..c89851e 100644
--- a/src/gui/effects/qgraphicseffect.h
+++ b/src/gui/effects/qgraphicseffect.h
@@ -87,6 +87,7 @@ private:
     friend class QGraphicsEffectPrivate;
     friend class QGraphicsScenePrivate;
     friend class QGraphicsItem;
+    friend class QGraphicsItemPrivate;
     friend class QWidget;
     friend class QWidgetPrivate;
 };
diff --git a/src/gui/effects/qgraphicseffect_p.h b/src/gui/effects/qgraphicseffect_p.h
index ff2fb85..8fb55d8 100644
--- a/src/gui/effects/qgraphicseffect_p.h
+++ b/src/gui/effects/qgraphicseffect_p.h
@@ -55,6 +55,8 @@
 
 #include "qgraphicseffect.h"
 
+#include <QPixmapCache>
+
 #include <private/qobject_p.h>
 #include <private/qpixmapfilter_p.h>
 
@@ -65,7 +67,7 @@ class QGraphicsEffectSourcePrivate : public QObjectPrivate
     Q_DECLARE_PUBLIC(QGraphicsEffectSource)
 public:
     QGraphicsEffectSourcePrivate() : QObjectPrivate() {}
-    virtual ~QGraphicsEffectSourcePrivate() {}
+    virtual ~QGraphicsEffectSourcePrivate() { invalidateCache(); }
     virtual void detach() = 0;
     virtual QRectF boundingRect(Qt::CoordinateSystem system) const = 0;
     virtual QRect deviceRect() const = 0;
@@ -77,9 +79,16 @@ public:
     virtual bool isPixmap() const = 0;
     virtual QPixmap pixmap(Qt::CoordinateSystem system, QPoint *offset = 0) const = 0;
     virtual void effectBoundingRectChanged() = 0;
+    void invalidateCache() const { QPixmapCache::remove(m_cacheKey); }
+
     friend class QGraphicsScenePrivate;
     friend class QGraphicsItem;
     friend class QGraphicsItemPrivate;
+
+private:
+    mutable Qt::CoordinateSystem m_cachedSystem;
+    mutable QPoint m_cachedOffset;
+    mutable QPixmapCache::Key m_cacheKey;
 };
 
 class Q_GUI_EXPORT QGraphicsEffectPrivate : public QObjectPrivate
@@ -94,6 +103,7 @@ public:
         if (source) {
             flags |= QGraphicsEffect::SourceDetached;
             source->d_func()->detach();
+            source->d_func()->invalidateCache();
             delete source;
         }
         source = newSource;
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index 4b2ff52..97979e5 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -2484,12 +2484,14 @@ void QGraphicsItem::setOpacity(qreal opacity)
     itemChange(ItemOpacityHasChanged, newOpacityVariant);
 
     // Update.
-    if (d_ptr->scene)
+    if (d_ptr->scene) {
+        d_ptr->invalidateGraphicsEffectsRecursively();
         d_ptr->scene->d_func()->markDirty(this, QRectF(),
                                           /*invalidateChildren=*/true,
                                           /*maybeDirtyClipPath=*/false,
                                           /*force=*/false,
                                           /*ignoreOpacity=*/true);
+    }
 
     if (d_ptr->isObject)
         emit static_cast<QGraphicsObject *>(this)->opacityChanged();
@@ -4951,6 +4953,22 @@ int QGraphicsItemPrivate::depth() const
 /*!
     \internal
 */
+void QGraphicsItemPrivate::invalidateGraphicsEffectsRecursively()
+{
+    QGraphicsItemPrivate *itemPrivate = this;
+    do {
+        if (itemPrivate->graphicsEffect) {
+            itemPrivate->notifyInvalidated = 1;
+
+            if (!itemPrivate->updateDueToGraphicsEffect)
+                static_cast<QGraphicsItemEffectSourcePrivate *>(itemPrivate->graphicsEffect->d_func()->source->d_func())->invalidateCache();
+        }
+    } while ((itemPrivate = itemPrivate->parent ? itemPrivate->parent->d_ptr.data() : 0));
+}
+
+/*!
+    \internal
+*/
 void QGraphicsItemPrivate::invalidateDepthRecursively()
 {
     if (itemDepth == -1)
@@ -5282,11 +5300,7 @@ void QGraphicsItem::update(const QRectF &rect)
         return;
 
     // Make sure we notify effects about invalidated source.
-    QGraphicsItem *item = this;
-    do {
-        if (item->d_ptr->graphicsEffect)
-            item->d_ptr->notifyInvalidated = 1;
-    } while ((item = item->d_ptr->parent));
+    d_ptr->invalidateGraphicsEffectsRecursively();
 
     if (CacheMode(d_ptr->cacheMode) != NoCache) {
         // Invalidate cache.
@@ -10723,6 +10737,7 @@ QPixmap QGraphicsItemEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QP
     }
 
     pixmapPainter.end();
+
     return pixmap;
 }
 
@@ -10742,6 +10757,23 @@ QDebug operator<<(QDebug debug, QGraphicsItem *item)
     return debug;
 }
 
+QDebug operator<<(QDebug debug, QGraphicsObject *item)
+{
+    if (!item) {
+        debug << "QGraphicsObject(0)";
+        return debug;
+    }
+
+    debug.nospace() << item->metaObject()->className() << '(' << (void*)item;
+    if (!item->objectName().isEmpty())
+        debug << ", name = " << item->objectName();
+    debug.nospace() << ", parent = " << ((void*)item->parentItem())
+          << ", pos = " << item->pos()
+          << ", z = " << item->zValue() << ", flags = "
+          << item->flags() << ')';
+    return debug.space();
+}
+
 QDebug operator<<(QDebug debug, QGraphicsItem::GraphicsItemChange change)
 {
     const char *str = "UnknownChange";
diff --git a/src/gui/graphicsview/qgraphicsitem.h b/src/gui/graphicsview/qgraphicsitem.h
index 2665235..f3fe99c 100644
--- a/src/gui/graphicsview/qgraphicsitem.h
+++ b/src/gui/graphicsview/qgraphicsitem.h
@@ -555,7 +555,7 @@ public:
     using QObject::children;
 #endif
 
-    void grabGesture(Qt::GestureType type, Qt::GestureContext context = Qt::WidgetWithChildrenGesture);
+    void grabGesture(Qt::GestureType type, Qt::GestureContext context = Qt::ItemWithChildrenGesture);
 
 Q_SIGNALS:
     void parentChanged();
@@ -1120,6 +1120,7 @@ template <class T> inline T qgraphicsitem_cast(const QGraphicsItem *item)
 
 #ifndef QT_NO_DEBUG_STREAM
 Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem *item);
+Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsObject *item);
 Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem::GraphicsItemChange change);
 Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem::GraphicsItemFlag flag);
 Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem::GraphicsItemFlags flags);
diff --git a/src/gui/graphicsview/qgraphicsitem_p.h b/src/gui/graphicsview/qgraphicsitem_p.h
index 5b401ba..046f5dc 100644
--- a/src/gui/graphicsview/qgraphicsitem_p.h
+++ b/src/gui/graphicsview/qgraphicsitem_p.h
@@ -177,6 +177,7 @@ public:
         wantsActive(0),
         holesInSiblingIndex(0),
         sequentialOrdering(1),
+        updateDueToGraphicsEffect(0),
         globalStackingOrder(-1),
         q_ptr(0)
     {
@@ -221,6 +222,7 @@ public:
     bool discardUpdateRequest(bool ignoreClipping = false, bool ignoreVisibleBit = false,
                               bool ignoreDirtyBit = false, bool ignoreOpacity = false) const;
     int depth() const;
+    void invalidateGraphicsEffectsRecursively();
     void invalidateDepthRecursively();
     void resolveDepth();
     void addChild(QGraphicsItem *child);
@@ -502,6 +504,7 @@ public:
     quint32 wantsActive : 1;
     quint32 holesInSiblingIndex : 1;
     quint32 sequentialOrdering : 1;
+    quint32 updateDueToGraphicsEffect : 1;
 
     // Optional stacking order
     int globalStackingOrder;
@@ -589,8 +592,11 @@ public:
     inline const QWidget *widget() const
     { return 0; }
 
-    inline void update()
-    { item->update(); }
+    inline void update() {
+        item->d_ptr->updateDueToGraphicsEffect = true;
+        item->update();
+        item->d_ptr->updateDueToGraphicsEffect = false;
+    }
 
     inline void effectBoundingRectChanged()
     { item->prepareGeometryChange(); }
@@ -619,6 +625,7 @@ public:
 
     QGraphicsItem *item;
     QGraphicsItemPaintInfo *info;
+    QTransform lastEffectTransform;
 };
 
 
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index a624b10..c459d21 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -242,7 +242,6 @@
 #include <QtGui/qstyleoption.h>
 #include <QtGui/qtooltip.h>
 #include <QtGui/qtransform.h>
-#include <QtGui/qgesture.h>
 #include <QtGui/qinputcontext.h>
 #include <QtGui/qgraphicseffect.h>
 #include <private/qapplication_p.h>
@@ -251,6 +250,14 @@
 #include <private/qt_x11_p.h>
 #endif
 #include <private/qgraphicseffect_p.h>
+#include <private/qgesturemanager_p.h>
+
+// #define GESTURE_DEBUG
+#ifndef GESTURE_DEBUG
+# define DEBUG if (0) qDebug
+#else
+# define DEBUG qDebug
+#endif
 
 QT_BEGIN_NAMESPACE
 
@@ -1052,6 +1059,14 @@ bool QGraphicsScenePrivate::filterEvent(QGraphicsItem *item, QEvent *event)
 */
 bool QGraphicsScenePrivate::sendEvent(QGraphicsItem *item, QEvent *event)
 {
+    if (QGraphicsObject *object = item->toGraphicsObject()) {
+        QApplicationPrivate *qAppPriv = QApplicationPrivate::instance();
+        if (qAppPriv->gestureManager) {
+            if (qAppPriv->gestureManager->filterEvent(object, event))
+                return true;
+        }
+    }
+
     if (filterEvent(item, event))
         return false;
     if (filterDescendantEvent(item, event))
@@ -3365,6 +3380,10 @@ bool QGraphicsScene::event(QEvent *event)
     case QEvent::TouchEnd:
         d->touchEventHandler(static_cast<QTouchEvent *>(event));
         break;
+    case QEvent::Gesture:
+    case QEvent::GestureOverride:
+        d->gestureEventHandler(static_cast<QGestureEvent *>(event));
+        break;
     default:
         return QObject::event(event);
     }
@@ -4569,6 +4588,11 @@ void QGraphicsScenePrivate::drawSubtreeRecursive(QGraphicsItem *item, QPainter *
         else
             painter->setWorldTransform(*transformPtr);
         painter->setOpacity(opacity);
+
+        if (sourced->lastEffectTransform != painter->worldTransform()) {
+            sourced->lastEffectTransform = painter->worldTransform();
+            sourced->invalidateCache();
+        }
         item->d_ptr->graphicsEffect->draw(painter, source);
         painter->setWorldTransform(restoreTransform);
         sourced->info = 0;
@@ -5699,6 +5723,238 @@ void QGraphicsScenePrivate::leaveModal(QGraphicsItem *panel)
     dispatchHoverEvent(&hoverEvent);
 }
 
+void QGraphicsScenePrivate::getGestureTargets(const QSet<QGesture *> &gestures,
+                                              QWidget *viewport,
+                                              QMap<Qt::GestureType, QGesture *> *conflictedGestures,
+                                              QList<QList<QGraphicsObject *> > *conflictedItems,
+                                              QHash<QGesture *, QGraphicsObject *> *normalGestures)
+{
+    foreach (QGesture *gesture, gestures) {
+        Qt::GestureType gestureType = gesture->gestureType();
+        if (gesture->hasHotSpot()) {
+            QPoint screenPos = gesture->hotSpot().toPoint();
+            QList<QGraphicsItem *> items = itemsAtPosition(screenPos, QPointF(), viewport);
+            QList<QGraphicsObject *> result;
+            for (int j = 0; j < items.size(); ++j) {
+                QGraphicsObject *item = items.at(j)->toGraphicsObject();
+                if (!item)
+                    continue;
+                QGraphicsItemPrivate *d = item->QGraphicsItem::d_func();
+                if (d->gestureContext.contains(gestureType)) {
+                    result.append(item);
+                }
+            }
+            DEBUG() << "QGraphicsScenePrivate::getGestureTargets:"
+                    << gesture << result;
+            if (result.size() == 1) {
+                normalGestures->insert(gesture, result.first());
+            } else if (!result.isEmpty()) {
+                conflictedGestures->insert(gestureType, gesture);
+                conflictedItems->append(result);
+            }
+        }
+    }
+}
+
+void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event)
+{
+    QWidget *viewport = event->widget();
+    if (!viewport)
+        return;
+    QList<QGesture *> allGestures = event->allGestures();
+    DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+            << "Delivering gestures:" <<  allGestures;
+
+    typedef QHash<QGraphicsObject *, QList<QGesture *> > GesturesPerItem;
+    GesturesPerItem gesturesPerItem;
+
+    QSet<QGesture *> startedGestures;
+    foreach (QGesture *gesture, allGestures) {
+        QGraphicsObject *target = gestureTargets.value(gesture, 0);
+        if (!target) {
+            // when we are not in started mode but don't have a target
+            // then the only one interested in gesture is the view/scene
+            if (gesture->state() == Qt::GestureStarted)
+                startedGestures.insert(gesture);
+        } else {
+            gesturesPerItem[target].append(gesture);
+        }
+    }
+
+    QMap<Qt::GestureType, QGesture *> conflictedGestures;
+    QList<QList<QGraphicsObject *> > conflictedItems;
+    QHash<QGesture *, QGraphicsObject *> normalGestures;
+    getGestureTargets(startedGestures, viewport, &conflictedGestures, &conflictedItems,
+                      &normalGestures);
+    DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+            << "Conflicting gestures:" <<  conflictedGestures.values() << conflictedItems;
+    Q_ASSERT((conflictedGestures.isEmpty() && conflictedItems.isEmpty()) ||
+              (!conflictedGestures.isEmpty() && !conflictedItems.isEmpty()));
+
+    // gestures that were sent as override events, but no one accepted them
+    QHash<QGesture *, QGraphicsObject *> ignoredConflictedGestures;
+
+    // deliver conflicted gestures as override events first
+    while (!conflictedGestures.isEmpty() && !conflictedItems.isEmpty()) {
+        // get the topmost item to deliver the override event
+        Q_ASSERT(!conflictedItems.isEmpty());
+        Q_ASSERT(!conflictedItems.first().isEmpty());
+        QGraphicsObject *topmost = conflictedItems.first().first();
+        for (int i = 1; i < conflictedItems.size(); ++i) {
+            QGraphicsObject *item = conflictedItems.at(i).first();
+            if (qt_closestItemFirst(item, topmost)) {
+                topmost = item;
+            }
+        }
+        // get a list of gestures to send to the item
+        QList<Qt::GestureType> grabbedGestures =
+                topmost->QGraphicsItem::d_func()->gestureContext.keys();
+        QList<QGesture *> gestures;
+        for (int i = 0; i < grabbedGestures.size(); ++i) {
+            if (QGesture *g = conflictedGestures.value(grabbedGestures.at(i), 0)) {
+                gestures.append(g);
+                if (!ignoredConflictedGestures.contains(g))
+                    ignoredConflictedGestures.insert(g, topmost);
+            }
+        }
+
+        // send gesture override to the topmost item
+        QGestureEvent ev(gestures);
+        ev.t = QEvent::GestureOverride;
+        ev.setWidget(event->widget());
+        // mark event and individual gestures as ignored
+        ev.ignore();
+        foreach(QGesture *g, gestures)
+            ev.setAccepted(g, false);
+        DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+                << "delivering override to"
+                << topmost << gestures;
+        sendEvent(topmost, &ev);
+        // mark all accepted gestures to deliver them as normal gesture events
+        foreach (QGesture *g, gestures) {
+            if (ev.isAccepted() || ev.isAccepted(g)) {
+                conflictedGestures.remove(g->gestureType());
+                gestureTargets.remove(g);
+                // add the gesture to the list of normal delivered gestures
+                normalGestures.insert(g, topmost);
+                DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+                        << "override was accepted:"
+                        << g << topmost;
+                ignoredConflictedGestures.remove(g);
+            }
+        }
+        // remove the item that we've already delivered from the list
+        for (int i = 0; i < conflictedItems.size(); ) {
+            QList<QGraphicsObject *> &items = conflictedItems[i];
+            if (items.first() == topmost) {
+                items.removeFirst();
+                if (items.isEmpty()) {
+                    conflictedItems.removeAt(i);
+                    continue;
+                }
+            }
+            ++i;
+        }
+    }
+
+    // put back those started gestures that are not in the conflicted state
+    // and remember their targets
+    QHash<QGesture *, QGraphicsObject *>::const_iterator it = normalGestures.begin(),
+                                                          e = normalGestures.end();
+    for (; it != e; ++it) {
+        QGesture *g = it.key();
+        QGraphicsObject *receiver = it.value();
+        Q_ASSERT(!gestureTargets.contains(g));
+        gestureTargets.insert(g, receiver);
+        gesturesPerItem[receiver].append(g);
+    }
+    it = ignoredConflictedGestures.begin();
+    e = ignoredConflictedGestures.end();
+    for (; it != e; ++it) {
+        QGesture *g = it.key();
+        QGraphicsObject *receiver = it.value();
+        Q_ASSERT(!gestureTargets.contains(g));
+        gestureTargets.insert(g, receiver);
+        gesturesPerItem[receiver].append(g);
+    }
+
+    DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+            << "Started gestures:" << normalGestures.keys()
+            << "All gestures:" << gesturesPerItem.values();
+
+    // deliver all events
+    QList<QGesture *> alreadyIgnoredGestures;
+    QHash<QGraphicsObject *, QSet<QGesture *> > itemIgnoredGestures;
+    QList<QGraphicsObject *> targetItems = gesturesPerItem.keys();
+    qSort(targetItems.begin(), targetItems.end(), qt_closestItemFirst);
+    for (int i = 0; i < targetItems.size(); ++i) {
+        QGraphicsObject *item = targetItems.at(i);
+        QList<QGesture *> gestures = gesturesPerItem.value(item);
+        // remove gestures that were already delivered once and were ignored
+        DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+                << "already ignored gestures for item"
+                << item << ":" << itemIgnoredGestures.value(item);
+
+        if (itemIgnoredGestures.contains(item)) // don't deliver twice to the same item
+            continue;
+
+        QGraphicsItemPrivate *gid = item->QGraphicsItem::d_func();
+        foreach(QGesture *g, alreadyIgnoredGestures) {
+            if (gid->gestureContext.contains(g->gestureType()))
+                gestures += g;
+        }
+        if (gestures.isEmpty())
+            continue;
+        DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+                << "delivering to"
+                << item << gestures;
+        QGestureEvent ev(gestures);
+        ev.setWidget(event->widget());
+        sendEvent(item, &ev);
+        QSet<QGesture *> ignoredGestures;
+        foreach (QGesture *g, gestures) {
+            if (!ev.isAccepted() && !ev.isAccepted(g))
+                ignoredGestures.insert(g);
+        }
+        if (!ignoredGestures.isEmpty()) {
+            // get a list of items under the (current) hotspot of each ignored
+            // gesture and start delivery again from the beginning
+            DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+                    << "item has ignored the event, will propagate."
+                    << item << ignoredGestures;
+            itemIgnoredGestures[item] += ignoredGestures;
+            QMap<Qt::GestureType, QGesture *> conflictedGestures;
+            QList<QList<QGraphicsObject *> > itemsForConflictedGestures;
+            QHash<QGesture *, QGraphicsObject *> normalGestures;
+            getGestureTargets(ignoredGestures, viewport,
+                              &conflictedGestures, &itemsForConflictedGestures,
+                              &normalGestures);
+            QSet<QGraphicsObject *> itemsSet = targetItems.toSet();
+            for (int k = 0; k < itemsForConflictedGestures.size(); ++k)
+                itemsSet += itemsForConflictedGestures.at(k).toSet();
+            targetItems = itemsSet.toList();
+            qSort(targetItems.begin(), targetItems.end(), qt_closestItemFirst);
+            alreadyIgnoredGestures = conflictedGestures.values();
+            DEBUG() << "QGraphicsScenePrivate::gestureEventHandler:"
+                    << "new targets:" << targetItems;
+            i = -1; // start delivery again
+            continue;
+        }
+    }
+
+    // forget about targets for gestures that have ended
+    foreach (QGesture *g, allGestures) {
+        switch (g->state()) {
+        case Qt::GestureFinished:
+        case Qt::GestureCanceled:
+            gestureTargets.remove(g);
+            break;
+        default:
+            break;
+        }
+    }
+}
+
 QT_END_NAMESPACE
 
 #include "moc_qgraphicsscene.cpp"
diff --git a/src/gui/graphicsview/qgraphicsscene_p.h b/src/gui/graphicsview/qgraphicsscene_p.h
index 8073695..cd20fd0 100644
--- a/src/gui/graphicsview/qgraphicsscene_p.h
+++ b/src/gui/graphicsview/qgraphicsscene_p.h
@@ -282,6 +282,13 @@ public:
     bool allItemsIgnoreTouchEvents;
     void enableTouchEventsOnViews();
 
+    QHash<QGesture *, QGraphicsObject *> gestureTargets;
+    void gestureEventHandler(QGestureEvent *event);
+    void getGestureTargets(const QSet<QGesture *> &gestures, QWidget *viewport,
+                           QMap<Qt::GestureType, QGesture *> *conflictedGestures,
+                           QList<QList<QGraphicsObject *> > *conflictedItems,
+                           QHash<QGesture *, QGraphicsObject *> *normalGestures);
+
     void updateInputMethodSensitivityInViews();
 
     QList<QGraphicsItem *> modalPanels;
diff --git a/src/gui/graphicsview/qgraphicsview.cpp b/src/gui/graphicsview/qgraphicsview.cpp
index 32747cc..710c745 100644
--- a/src/gui/graphicsview/qgraphicsview.cpp
+++ b/src/gui/graphicsview/qgraphicsview.cpp
@@ -2701,6 +2701,19 @@ bool QGraphicsView::viewportEvent(QEvent *event)
 
         return true;
     }
+    case QEvent::Gesture:
+    case QEvent::GestureOverride:
+    {
+        if (!isEnabled())
+            return false;
+
+        if (d->scene && d->sceneInteractionAllowed) {
+            QGestureEvent *gestureEvent = static_cast<QGestureEvent *>(event);
+            gestureEvent->setWidget(viewport());
+            (void) QApplication::sendEvent(d->scene, gestureEvent);
+        }
+        return true;
+    }
     default:
         break;
     }
diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp
index 21ab40c..571ef9d 100644
--- a/src/gui/image/qimage.cpp
+++ b/src/gui/image/qimage.cpp
@@ -546,11 +546,7 @@ bool QImageData::checkForAlphaPixels() const
     Each pixel stored in a QImage is represented by an integer. The
     size of the integer varies depending on the format. QImage
     supports several image formats described by the \l Format
-    enum. The monochrome (1-bit), 8-bit and 32-bit images are
-    available in all versions of Qt. In addition Qt for Embedded Linux
-    also supports 2-bit, 4-bit, and 16-bit images. For more information
-    about the Qt Extended specific formats, see the documentation of the \l
-    Format enum.
+    enum.
 
     Monochrome images are stored using 1-bit indexes into a color table
     with at most two colors. There are two different types of
@@ -707,9 +703,20 @@ bool QImageData::checkForAlphaPixels() const
                             packed with the most significant bit (MSB) first.
     \value Format_MonoLSB   The image is stored using 1-bit per pixel. Bytes are
                             packed with the less significant bit (LSB) first.
-    \value Format_Indexed8  The image is stored using 8-bit indexes into a colormap.
+
+    \value Format_Indexed8  The image is stored using 8-bit indexes
+                            into a colormap. \warning Drawing into a
+                            QImage with Indexed8 format is not
+                            supported.
+
     \value Format_RGB32     The image is stored using a 32-bit RGB format (0xffRRGGBB).
-    \value Format_ARGB32    The image is stored using a 32-bit ARGB format (0xAARRGGBB).
+
+    \value Format_ARGB32    The image is stored using a 32-bit ARGB
+                            format (0xAARRGGBB). \warning Do not
+                            render into ARGB32 images using
+                            QPainter. Format_ARGB32_Premultiplied is
+                            significantly faster.
+
     \value Format_ARGB32_Premultiplied  The image is stored using a premultiplied 32-bit
                             ARGB format (0xAARRGGBB), i.e. the red,
                             green, and blue channels are multiplied
@@ -718,7 +725,9 @@ bool QImageData::checkForAlphaPixels() const
                             undefined.) Certain operations (such as image composition
                             using alpha blending) are faster using premultiplied ARGB32
                             than with plain ARGB32.
+
     \value Format_RGB16     The image is stored using a 16-bit RGB format (5-6-5).
+
     \value Format_ARGB8565_Premultiplied  The image is stored using a
                             premultiplied 24-bit ARGB format (8-5-6-5).
     \value Format_RGB666    The image is stored using a 24-bit RGB format (6-6-6).
diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp
index f94552d..a3b7516 100644
--- a/src/gui/image/qpixmap.cpp
+++ b/src/gui/image/qpixmap.cpp
@@ -470,9 +470,11 @@ QPixmap::operator QVariant() const
     conversion fails.
 
     If the pixmap has 1-bit depth, the returned image will also be 1
-    bit deep. If the pixmap has 2- to 8-bit depth, the returned image
-    has 8-bit depth. If the pixmap has greater than 8-bit depth, the
-    returned image has 32-bit depth.
+    bit deep. Images with more bits will be returned in a format
+    closely represents the underlying system. Usually this will be
+    QImage::Format_ARGB32_Premultiplied for pixmaps with an alpha and
+    QImage::Format_RGB32 or QImage::Format_RGB16 for pixmaps without
+    alpha.
 
     Note that for the moment, alpha masks on monochrome images are
     ignored.
@@ -1704,8 +1706,8 @@ QPixmap QPixmap::transformed(const QMatrix &matrix, Qt::TransformationMode mode)
 
     In addition, on Symbian, the QPixmap class supports conversion to
     and from CFbsBitmap: the toSymbianCFbsBitmap() function creates
-    CFbsBitmap equivalent to the QPixmap, based on given mode and returns 
-    a CFbsBitmap object. The fromSymbianCFbsBitmap() function returns a 
+    CFbsBitmap equivalent to the QPixmap, based on given mode and returns
+    a CFbsBitmap object. The fromSymbianCFbsBitmap() function returns a
     QPixmap that is equivalent to the given bitmap and given mode.
 
     \section1 Pixmap Transformations
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index c4249d9..7c38d4b 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -3639,8 +3639,13 @@ bool QApplication::notify(QObject *receiver, QEvent *e)
 
     // walk through parents and check for gestures
     if (d->gestureManager) {
-        if (d->gestureManager->filterEvent(receiver, e))
-            return true;
+        if (receiver->isWidgetType()) {
+            if (d->gestureManager->filterEvent(static_cast<QWidget *>(receiver), e))
+                return true;
+        } else if (QGesture *gesture = qobject_cast<QGesture *>(receiver)) {
+            if (d->gestureManager->filterEvent(gesture, e))
+                return true;
+        }
     }
 
 
@@ -4165,40 +4170,41 @@ bool QApplication::notify(QObject *receiver, QEvent *e)
                     if (wd->gestureContext.contains(type)) {
                         allGestures.removeAt(i);
                         gestures.append(g);
-                        gestureEvent->setAccepted(g, false);
                     } else {
                         ++i;
                     }
                 }
-                if (!gestures.isEmpty()) {
+                if (!gestures.isEmpty()) { // we have gestures for this w
                     QGestureEvent ge(gestures);
                     ge.t = gestureEvent->t;
                     ge.spont = gestureEvent->spont;
                     ge.m_accept = wasAccepted;
+                    ge.d_func()->accepted = gestureEvent->d_func()->accepted;
                     res = d->notify_helper(w, &ge);
                     gestureEvent->spont = false;
                     eventAccepted = ge.isAccepted();
-                    if (res && eventAccepted)
-                        break;
-                    if (!eventAccepted) {
-                        // ### two ways to ignore the event/gesture
-
-                        // if the whole event wasn't accepted, put back those
-                        // gestures that were not accepted.
-                        for (int i = 0; i < gestures.size(); ++i) {
-                            QGesture *g = gestures.at(i);
-                            if (!ge.isAccepted(g))
-                                allGestures.append(g);
+                    for (int i = 0; i < gestures.size(); ++i) {
+                        QGesture *g = gestures.at(i);
+                        if ((res && eventAccepted) || (!eventAccepted && ge.isAccepted(g))) {
+                            // if the gesture was accepted, mark the target widget for it
+                            gestureEvent->d_func()->targetWidgets[g->gestureType()] = w;
+                            gestureEvent->setAccepted(g, true);
+                        } else if (!eventAccepted && !ge.isAccepted(g)) {
+                            // if the gesture was explicitly ignored by the application,
+                            // put it back so a parent can get it
+                            allGestures.append(g);
                         }
                     }
                 }
-                if (allGestures.isEmpty())
+                if (allGestures.isEmpty()) // everything delivered
                     break;
                 if (w->isWindow())
                     break;
                 w = w->parentWidget();
             }
-            gestureEvent->m_accept = eventAccepted;
+            foreach (QGesture *g, allGestures)
+                gestureEvent->setAccepted(g, false);
+            gestureEvent->m_accept = false; // to make sure we check individual gestures
         } else {
             res = d->notify_helper(receiver, e);
         }
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm
index 4c2a14a..d49c150 100644
--- a/src/gui/kernel/qcocoaview_mac.mm
+++ b/src/gui/kernel/qcocoaview_mac.mm
@@ -51,6 +51,7 @@
 #include <private/qmacinputcontext_p.h>
 #include <private/qmultitouch_mac_p.h>
 #include <private/qevent_p.h>
+#include <private/qbackingstore_p.h>
 
 #include <qscrollarea.h>
 #include <qhash.h>
@@ -503,6 +504,12 @@ extern "C" {
 
 - (void)drawRect:(NSRect)aRect
 {
+    if (QApplicationPrivate::graphicsSystem() != 0) {
+        if (QWidgetBackingStore *bs = qwidgetprivate->maybeBackingStore())
+            bs->markDirty(qwidget->rect(), qwidget);
+        qwidgetprivate->syncBackingStore(qwidget->rect());
+        return;
+    }
     CGContextRef cg = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
     qwidgetprivate->hd = cg;
     CGContextSaveGState(cg);
diff --git a/src/gui/kernel/qevent.cpp b/src/gui/kernel/qevent.cpp
index 2ff6d65..065bd09 100644
--- a/src/gui/kernel/qevent.cpp
+++ b/src/gui/kernel/qevent.cpp
@@ -45,6 +45,7 @@
 #include "private/qapplication_p.h"
 #include "private/qkeysequence_p.h"
 #include "qwidget.h"
+#include "qgraphicsview.h"
 #include "qdebug.h"
 #include "qmime.h"
 #include "qdnd_p.h"
@@ -4223,8 +4224,17 @@ QTouchEvent::TouchPoint &QTouchEvent::TouchPoint::operator=(const QTouchEvent::T
     Creates new QGestureEvent containing a list of \a gestures.
 */
 QGestureEvent::QGestureEvent(const QList<QGesture *> &gestures)
-    : QEvent(QEvent::Gesture), gestures_(gestures)
+    : QEvent(QEvent::Gesture)
 {
+    d = reinterpret_cast<QEventPrivate *>(new QGestureEventPrivate(gestures));
+}
+
+/*!
+    Destroys QGestureEvent.
+*/
+QGestureEvent::~QGestureEvent()
+{
+    delete reinterpret_cast<QGestureEventPrivate *>(d);
 }
 
 /*!
@@ -4232,7 +4242,7 @@ QGestureEvent::QGestureEvent(const QList<QGesture *> &gestures)
 */
 QList<QGesture *> QGestureEvent::allGestures() const
 {
-    return gestures_;
+    return d_func()->gestures;
 }
 
 /*!
@@ -4240,9 +4250,10 @@ QList<QGesture *> QGestureEvent::allGestures() const
 */
 QGesture *QGestureEvent::gesture(Qt::GestureType type) const
 {
-    for(int i = 0; i < gestures_.size(); ++i)
-        if (gestures_.at(i)->gestureType() == type)
-            return gestures_.at(i);
+    const QGestureEventPrivate *d = d_func();
+    for(int i = 0; i < d->gestures.size(); ++i)
+        if (d->gestures.at(i)->gestureType() == type)
+            return d->gestures.at(i);
     return 0;
 }
 
@@ -4251,7 +4262,7 @@ QGesture *QGestureEvent::gesture(Qt::GestureType type) const
 */
 QList<QGesture *> QGestureEvent::activeGestures() const
 {
-    return gestures_;
+    return d_func()->gestures;
 }
 
 /*!
@@ -4259,7 +4270,7 @@ QList<QGesture *> QGestureEvent::activeGestures() const
 */
 QList<QGesture *> QGestureEvent::canceledGestures() const
 {
-    return gestures_;
+    return d_func()->gestures;
 }
 
 /*!
@@ -4279,7 +4290,7 @@ void QGestureEvent::setAccepted(QGesture *gesture, bool value)
 {
     setAccepted(false);
     if (gesture)
-        gesture->d_func()->accept = value;
+        d_func()->accepted[gesture->gestureType()] = value;
 }
 
 /*!
@@ -4315,7 +4326,56 @@ void QGestureEvent::ignore(QGesture *gesture)
 */
 bool QGestureEvent::isAccepted(QGesture *gesture) const
 {
-    return gesture ? gesture->d_func()->accept : false;
+    return gesture ? d_func()->accepted.value(gesture->gestureType(), true) : false;
+}
+
+/*!
+    Sets the widget for this event.
+*/
+void QGestureEvent::setWidget(QWidget *widget)
+{
+    d_func()->widget = widget;
+}
+
+/*!
+    Returns the widget on which the event occurred.
+*/
+QWidget *QGestureEvent::widget() const
+{
+    return d_func()->widget;
+}
+
+/*!
+    Returns the scene-local coordinates if the \a gesturePoint is inside a graphics view.
+
+    \sa QPointF::isNull().
+*/
+QPointF QGestureEvent::mapToScene(const QPointF &gesturePoint) const
+{
+    QWidget *w = widget();
+    if (w) // we get the viewport as widget, not the graphics view
+        w = w->parentWidget();
+    QGraphicsView *view = qobject_cast<QGraphicsView*>(w);
+    if (view) {
+        return view->mapToScene(view->mapFromGlobal(gesturePoint.toPoint()));
+    }
+    return QPointF();
+}
+
+/*!
+    \internal
+*/
+QGestureEventPrivate *QGestureEvent::d_func()
+{
+    return reinterpret_cast<QGestureEventPrivate *>(d);
+}
+
+/*!
+    \internal
+*/
+const QGestureEventPrivate *QGestureEvent::d_func() const
+{
+    return reinterpret_cast<const QGestureEventPrivate *>(d);
 }
 
 #ifdef Q_NO_USING_KEYWORD
diff --git a/src/gui/kernel/qevent.h b/src/gui/kernel/qevent.h
index 3516222..b7370fd 100644
--- a/src/gui/kernel/qevent.h
+++ b/src/gui/kernel/qevent.h
@@ -820,10 +820,12 @@ protected:
 };
 
 class QGesture;
+class QGestureEventPrivate;
 class Q_GUI_EXPORT QGestureEvent : public QEvent
 {
 public:
     QGestureEvent(const QList<QGesture *> &gestures);
+    ~QGestureEvent();
 
     QList<QGesture *> allGestures() const;
     QGesture *gesture(Qt::GestureType type) const;
@@ -849,8 +851,17 @@ public:
     void ignore(QGesture *);
     bool isAccepted(QGesture *) const;
 
+    void setWidget(QWidget *widget);
+    QWidget *widget() const;
+
+    QPointF mapToScene(const QPointF &gesturePoint) const;
+
 private:
-    QList<QGesture *> gestures_;
+    QGestureEventPrivate *d_func();
+    const QGestureEventPrivate *d_func() const;
+
+    friend class QApplication;
+    friend class QGestureManager;
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qevent_p.h b/src/gui/kernel/qevent_p.h
index c7a4975..6e6ab01 100644
--- a/src/gui/kernel/qevent_p.h
+++ b/src/gui/kernel/qevent_p.h
@@ -150,6 +150,20 @@ public:
 #endif
 };
 
+class QGestureEventPrivate
+{
+public:
+    inline QGestureEventPrivate(const QList<QGesture *> &list)
+        : gestures(list), widget(0)
+    {
+    }
+
+    QList<QGesture *> gestures;
+    QWidget *widget;
+    QMap<Qt::GestureType, bool> accepted;
+    QMap<Qt::GestureType, QWidget *> targetWidgets;
+};
+
 QT_END_NAMESPACE
 
 #endif // QEVENT_P_H
diff --git a/src/gui/kernel/qgesture.cpp b/src/gui/kernel/qgesture.cpp
index fc8df49..ecdd661 100644
--- a/src/gui/kernel/qgesture.cpp
+++ b/src/gui/kernel/qgesture.cpp
@@ -129,6 +129,10 @@ QGesture::~QGesture()
 
     \brief The point that is used to find the receiver for the gesture event.
 
+    The hot-spot is a point in the global coordinate system, use
+    QWidget::mapFromGlobal() or QGestureEvent::mapToScene() to get a
+    local hot-spot.
+
     If the hot-spot is not set, the targetObject is used as the receiver of the
     gesture event.
 */
@@ -154,16 +158,6 @@ Qt::GestureState QGesture::state() const
     return d_func()->state;
 }
 
-QObject *QGesture::targetObject() const
-{
-    return d_func()->targetObject;
-}
-
-void QGesture::setTargetObject(QObject *value)
-{
-    d_func()->targetObject = value;
-}
-
 QPointF QGesture::hotSpot() const
 {
     return d_func()->hotSpot;
@@ -241,17 +235,17 @@ QPanGesture::QPanGesture(QObject *parent)
     d_func()->gestureType = Qt::PanGesture;
 }
 
-QSizeF QPanGesture::totalOffset() const
+QPointF QPanGesture::totalOffset() const
 {
     return d_func()->totalOffset;
 }
 
-QSizeF QPanGesture::lastOffset() const
+QPointF QPanGesture::lastOffset() const
 {
     return d_func()->lastOffset;
 }
 
-QSizeF QPanGesture::offset() const
+QPointF QPanGesture::offset() const
 {
     return d_func()->offset;
 }
@@ -262,17 +256,17 @@ qreal QPanGesture::acceleration() const
 }
 
 
-void QPanGesture::setTotalOffset(const QSizeF &value)
+void QPanGesture::setTotalOffset(const QPointF &value)
 {
     d_func()->totalOffset = value;
 }
 
-void QPanGesture::setLastOffset(const QSizeF &value)
+void QPanGesture::setLastOffset(const QPointF &value)
 {
     d_func()->lastOffset = value;
 }
 
-void QPanGesture::setOffset(const QSizeF &value)
+void QPanGesture::setOffset(const QPointF &value)
 {
     d_func()->offset = value;
 }
diff --git a/src/gui/kernel/qgesture.h b/src/gui/kernel/qgesture.h
index 02eb526..6469959 100644
--- a/src/gui/kernel/qgesture.h
+++ b/src/gui/kernel/qgesture.h
@@ -67,7 +67,6 @@ class Q_GUI_EXPORT QGesture : public QObject
     Q_PROPERTY(Qt::GestureType gestureType READ gestureType)
     Q_PROPERTY(QPointF hotSpot READ hotSpot WRITE setHotSpot RESET unsetHotSpot)
     Q_PROPERTY(bool hasHotSpot READ hasHotSpot)
-    Q_PROPERTY(QObject* targetObject READ targetObject WRITE setTargetObject)
 
 public:
     explicit QGesture(QObject *parent = 0);
@@ -77,9 +76,6 @@ public:
 
     Qt::GestureState state() const;
 
-    QObject *targetObject() const;
-    void setTargetObject(QObject *value);
-
     QPointF hotSpot() const;
     void setHotSpot(const QPointF &value);
     bool hasHotSpot() const;
@@ -100,22 +96,22 @@ class Q_GUI_EXPORT QPanGesture : public QGesture
     Q_OBJECT
     Q_DECLARE_PRIVATE(QPanGesture)
 
-    Q_PROPERTY(QSizeF totalOffset READ totalOffset WRITE setTotalOffset)
-    Q_PROPERTY(QSizeF lastOffset READ lastOffset WRITE setLastOffset)
-    Q_PROPERTY(QSizeF offset READ offset WRITE setOffset)
+    Q_PROPERTY(QPointF totalOffset READ totalOffset WRITE setTotalOffset)
+    Q_PROPERTY(QPointF lastOffset READ lastOffset WRITE setLastOffset)
+    Q_PROPERTY(QPointF offset READ offset WRITE setOffset)
     Q_PROPERTY(qreal acceleration READ acceleration WRITE setAcceleration)
 
 public:
     QPanGesture(QObject *parent = 0);
 
-    QSizeF totalOffset() const;
-    QSizeF lastOffset() const;
-    QSizeF offset() const;
+    QPointF totalOffset() const;
+    QPointF lastOffset() const;
+    QPointF offset() const;
     qreal acceleration() const;
 
-    void setTotalOffset(const QSizeF &value);
-    void setLastOffset(const QSizeF &value);
-    void setOffset(const QSizeF &value);
+    void setTotalOffset(const QPointF &value);
+    void setLastOffset(const QPointF &value);
+    void setOffset(const QPointF &value);
     void setAcceleration(qreal value);
 
     friend class QPanGestureRecognizer;
diff --git a/src/gui/kernel/qgesture_p.h b/src/gui/kernel/qgesture_p.h
index 7f69a4e..975c0c9 100644
--- a/src/gui/kernel/qgesture_p.h
+++ b/src/gui/kernel/qgesture_p.h
@@ -68,7 +68,7 @@ class QGesturePrivate : public QObjectPrivate
 public:
     QGesturePrivate()
         : gestureType(Qt::CustomGesture), state(Qt::NoGesture), isHotSpotSet(false),
-          targetObject(0), accept(true)
+          targetObject(0)
     {
     }
 
@@ -77,7 +77,6 @@ public:
     QPointF hotSpot;
     bool isHotSpotSet;
     QObject *targetObject;
-    bool accept;
 };
 
 class QPanGesturePrivate : public QGesturePrivate
@@ -90,9 +89,9 @@ public:
     {
     }
 
-    QSizeF totalOffset;
-    QSizeF lastOffset;
-    QSizeF offset;
+    QPointF totalOffset;
+    QPointF lastOffset;
+    QPointF offset;
     QPoint lastPosition;
     qreal acceleration;
 };
diff --git a/src/gui/kernel/qgesturemanager.cpp b/src/gui/kernel/qgesturemanager.cpp
index 0f0aef2..ed8e744 100644
--- a/src/gui/kernel/qgesturemanager.cpp
+++ b/src/gui/kernel/qgesturemanager.cpp
@@ -44,6 +44,7 @@
 #include "private/qwidget_p.h"
 #include "private/qgesture_p.h"
 #include "private/qgraphicsitem_p.h"
+#include "private/qevent_p.h"
 #include "qgesture.h"
 #include "qevent.h"
 #include "qgraphicsitem.h"
@@ -88,7 +89,8 @@ Qt::GestureType QGestureManager::registerGestureRecognizer(QGestureRecognizer *r
 {
     QGesture *dummy = recognizer->createGesture(0);
     if (!dummy) {
-        qWarning("QGestureManager::registerGestureRecognizer: the recognizer doesn't provide gesture object");
+        qWarning("QGestureManager::registerGestureRecognizer: "
+                 "the recognizer fails to create a gesture object, skipping registration.");
         return Qt::GestureType(0);
     }
     Qt::GestureType type = dummy->gestureType();
@@ -107,7 +109,7 @@ void QGestureManager::unregisterGestureRecognizer(Qt::GestureType)
 
 }
 
-QGesture* QGestureManager::getState(QObject *object, Qt::GestureType type)
+QGesture *QGestureManager::getState(QObject *object, Qt::GestureType type)
 {
     // if the widget is being deleted we should be carefull and not to
     // create a new state, as it will create QWeakPointer which doesnt work
@@ -115,28 +117,39 @@ QGesture* QGestureManager::getState(QObject *object, Qt::GestureType type)
     if (object->isWidgetType()) {
         if (static_cast<QWidget *>(object)->d_func()->data.in_destructor)
             return 0;
+    } else if (QGesture *g = qobject_cast<QGesture *>(object)) {
+        return g;
+    } else {
+        Q_ASSERT(qobject_cast<QGraphicsObject *>(object));
     }
 
-    QWeakPointer<QGesture> state = objectGestures.value(QGestureManager::ObjectGesture(object, type));
+    QGesture *state =
+            objectGestures.value(QGestureManager::ObjectGesture(object, type));
     if (!state) {
         QGestureRecognizer *recognizer = recognizers.value(type);
         if (recognizer) {
             state = recognizer->createGesture(object);
             if (!state)
                 return 0;
-            if (state.data()->gestureType() == Qt::CustomGesture) {
+            if (state->gestureType() == Qt::CustomGesture) {
                 // if the recognizer didn't fill in the gesture type, then this
                 // is a custom gesture with autogenerated it and we fill it.
-                state.data()->d_func()->gestureType = type;
+                state->d_func()->gestureType = type;
+#if defined(GESTURE_DEBUG)
+                state->setObjectName(QString::number((int)type));
+#endif
             }
             objectGestures.insert(QGestureManager::ObjectGesture(object, type), state);
-            gestureToRecognizer[state.data()] = recognizer;
+            gestureToRecognizer[state] = recognizer;
+            gestureOwners[state] = object;
         }
     }
-    return state.data();
+    return state;
 }
 
-bool QGestureManager::filterEvent(QObject *receiver, QEvent *event)
+bool QGestureManager::filterEventThroughContexts(const QMap<QObject *,
+                                                 Qt::GestureType> &contexts,
+                                                 QEvent *event)
 {
     QSet<QGesture *> triggeredGestures;
     QSet<QGesture *> finishedGestures;
@@ -144,93 +157,23 @@ bool QGestureManager::filterEvent(QObject *receiver, QEvent *event)
     QSet<QGesture *> canceledGestures;
     QSet<QGesture *> notGestures;
 
-    QGraphicsObject *graphicsObject = qobject_cast<QGraphicsObject *>(receiver);
-    if (receiver->isWidgetType() || graphicsObject) {
-        QMap<QObject *, Qt::GestureType> contexts;
-        if (receiver->isWidgetType()) {
-            QWidget *w = static_cast<QWidget *>(receiver);
-            if (!w->d_func()->gestureContext.isEmpty()) {
-                typedef QMap<Qt::GestureType, Qt::GestureContext>::const_iterator ContextIterator;
-                for(ContextIterator it = w->d_func()->gestureContext.begin(),
-                    e = w->d_func()->gestureContext.end(); it != e; ++it) {
-                    contexts.insertMulti(w, it.key());
-                }
-            }
-            // find all gesture contexts for the widget tree
-            w = w->parentWidget();
-            while (w)
-            {
-                typedef QMap<Qt::GestureType, Qt::GestureContext>::const_iterator ContextIterator;
-                for (ContextIterator it = w->d_func()->gestureContext.begin(),
-                     e = w->d_func()->gestureContext.end(); it != e; ++it) {
-                    if (it.value() == Qt::WidgetWithChildrenGesture)
-                        contexts.insertMulti(w, it.key());
-                }
-                w = w->parentWidget();
-            }
-        } else {
-            QGraphicsObject *item = graphicsObject;
-            if (!item->QGraphicsItem::d_func()->gestureContext.isEmpty()) {
-                typedef QMap<Qt::GestureType, Qt::GestureContext>::const_iterator ContextIterator;
-                for(ContextIterator it = item->QGraphicsItem::d_func()->gestureContext.begin(),
-                    e = item->QGraphicsItem::d_func()->gestureContext.end(); it != e; ++it) {
-                    contexts.insertMulti(item, it.key());
-                }
-            }
-            // find all gesture contexts for the widget tree
-            item = item->parentObject();
-            while (item)
-            {
-                typedef QMap<Qt::GestureType, Qt::GestureContext>::const_iterator ContextIterator;
-                for (ContextIterator it = item->QGraphicsItem::d_func()->gestureContext.begin(),
-                     e = item->QGraphicsItem::d_func()->gestureContext.end(); it != e; ++it) {
-                    if (it.value() == Qt::WidgetWithChildrenGesture)
-                        contexts.insertMulti(item, it.key());
-                }
-                item = item->parentObject();
-            }
-        }
-        // filter the event through recognizers
-        typedef QMap<QObject *, Qt::GestureType>::const_iterator ContextIterator;
-        for (ContextIterator cit = contexts.begin(), ce = contexts.end(); cit != ce; ++cit) {
-            Qt::GestureType gestureType = cit.value();
-            QMap<Qt::GestureType, QGestureRecognizer *>::const_iterator
-                    rit = recognizers.lowerBound(gestureType),
-                    re = recognizers.upperBound(gestureType);
-            for (; rit != re; ++rit) {
-                QGestureRecognizer *recognizer = rit.value();
-                QObject *target = cit.key();
-                QGesture *state = getState(target, gestureType);
-                if (!state)
-                    continue;
-                QGestureRecognizer::Result result = recognizer->filterEvent(state, target, event);
-                QGestureRecognizer::Result type = result & QGestureRecognizer::ResultState_Mask;
-                if (type == QGestureRecognizer::GestureTriggered) {
-                    DEBUG() << "QGestureManager: gesture triggered: " << state;
-                    triggeredGestures << state;
-                } else if (type == QGestureRecognizer::GestureFinished) {
-                    DEBUG() << "QGestureManager: gesture finished: " << state;
-                    finishedGestures << state;
-                } else if (type == QGestureRecognizer::MaybeGesture) {
-                    DEBUG() << "QGestureManager: maybe gesture: " << state;
-                    newMaybeGestures << state;
-                } else if (type == QGestureRecognizer::NotGesture) {
-                    DEBUG() << "QGestureManager: not gesture: " << state;
-                    notGestures << state;
-                } else if (type == QGestureRecognizer::Ignore) {
-                    DEBUG() << "QGestureManager: gesture ignored the event: " << state;
-                } else {
-                    DEBUG() << "QGestureManager: hm, lets assume the recognizer ignored the event: " << state;
-                }
-                if (result & QGestureRecognizer::ConsumeEventHint) {
-                    DEBUG() << "QGestureManager: we were asked to consume the event: " << state;
-                    //TODO: consume events if asked
-                }
-            }
-        }
-    } else if (QGesture *state = qobject_cast<QGesture*>(receiver)) {
-        if (QGestureRecognizer *recognizer = gestureToRecognizer.value(state)) {
-            QGestureRecognizer::Result result = recognizer->filterEvent(state, state, event);
+    // TODO: sort contexts by the gesture type and check if one of the contexts
+    //       is already active.
+
+    // filter the event through recognizers
+    typedef QMap<QObject *, Qt::GestureType>::const_iterator ContextIterator;
+    for (ContextIterator cit = contexts.begin(), ce = contexts.end(); cit != ce; ++cit) {
+        Qt::GestureType gestureType = cit.value();
+        QMap<Qt::GestureType, QGestureRecognizer *>::const_iterator
+                rit = recognizers.lowerBound(gestureType),
+                re = recognizers.upperBound(gestureType);
+        for (; rit != re; ++rit) {
+            QGestureRecognizer *recognizer = rit.value();
+            QObject *target = cit.key();
+            QGesture *state = getState(target, gestureType);
+            if (!state)
+                continue;
+            QGestureRecognizer::Result result = recognizer->filterEvent(state, target, event);
             QGestureRecognizer::Result type = result & QGestureRecognizer::ResultState_Mask;
             if (type == QGestureRecognizer::GestureTriggered) {
                 DEBUG() << "QGestureManager: gesture triggered: " << state;
@@ -247,11 +190,15 @@ bool QGestureManager::filterEvent(QObject *receiver, QEvent *event)
             } else if (type == QGestureRecognizer::Ignore) {
                 DEBUG() << "QGestureManager: gesture ignored the event: " << state;
             } else {
-                DEBUG() << "QGestureManager: hm, lets assume the recognizer ignored the event: " << state;
+                DEBUG() << "QGestureManager: hm, lets assume the recognizer"
+                        << "ignored the event: " << state;
+            }
+            if (result & QGestureRecognizer::ConsumeEventHint) {
+                DEBUG() << "QGestureManager: we were asked to consume the event: "
+                        << state;
+                //TODO: consume events if asked
             }
         }
-    } else {
-        return false;
     }
 
     QSet<QGesture *> startedGestures = triggeredGestures - activeGestures;
@@ -260,7 +207,8 @@ bool QGestureManager::filterEvent(QObject *receiver, QEvent *event)
     // check if a running gesture switched back to maybe state
     QSet<QGesture *> activeToMaybeGestures = activeGestures & newMaybeGestures;
 
-    // check if a running gesture switched back to not gesture state, i.e. were canceled
+    // check if a running gesture switched back to not gesture state,
+    // i.e. were canceled
     QSet<QGesture *> activeToCancelGestures = activeGestures & notGestures;
     canceledGestures += activeToCancelGestures;
 
@@ -271,7 +219,9 @@ bool QGestureManager::filterEvent(QObject *receiver, QEvent *event)
             timer.start(3000, this);
     }
     // kill timers for gestures that were in maybe state
-    QSet<QGesture *> notMaybeGestures = (startedGestures | triggeredGestures | finishedGestures | canceledGestures | notGestures);
+    QSet<QGesture *> notMaybeGestures = (startedGestures | triggeredGestures
+                                         | finishedGestures | canceledGestures
+                                         | notGestures);
     foreach(QGesture *gesture, notMaybeGestures) {
         QMap<QGesture *, QBasicTimer>::iterator it =
                 maybeGestures.find(gesture);
@@ -294,7 +244,9 @@ bool QGestureManager::filterEvent(QObject *receiver, QEvent *event)
         // probably those are "singleshot" gestures so we'll fake the started state.
         foreach (QGesture *gesture, notStarted)
             gesture->d_func()->state = Qt::GestureStarted;
-        deliverEvents(notStarted, receiver);
+        QSet<QGesture *> undeliveredGestures;
+        deliverEvents(notStarted, &undeliveredGestures);
+        finishedGestures -= undeliveredGestures;
     }
 
     activeGestures += startedGestures;
@@ -328,10 +280,15 @@ bool QGestureManager::filterEvent(QObject *receiver, QEvent *event)
                 << "\n\tcanceled:" << canceledGestures;
     }
 
-    deliverEvents(startedGestures+triggeredGestures+finishedGestures+canceledGestures, receiver);
+    QSet<QGesture *> undeliveredGestures;
+    deliverEvents(startedGestures+triggeredGestures+finishedGestures+canceledGestures,
+                  &undeliveredGestures);
+
+    activeGestures -= undeliveredGestures;
 
     // reset gestures that ended
-    QSet<QGesture *> endedGestures = finishedGestures + canceledGestures;
+    QSet<QGesture *> endedGestures =
+            finishedGestures + canceledGestures + undeliveredGestures;
     foreach (QGesture *gesture, endedGestures) {
         if (QGestureRecognizer *recognizer = gestureToRecognizer.value(gesture, 0)) {
             recognizer->reset(gesture);
@@ -341,100 +298,218 @@ bool QGestureManager::filterEvent(QObject *receiver, QEvent *event)
     return false;
 }
 
-void QGestureManager::deliverEvents(const QSet<QGesture*> &gestures, QObject *lastReceiver)
+bool QGestureManager::filterEvent(QWidget *receiver, QEvent *event)
+{
+    QSet<Qt::GestureType> types;
+    QMap<QObject *, Qt::GestureType> contexts;
+    QWidget *w = receiver;
+    typedef QMap<Qt::GestureType, Qt::GestureContext>::const_iterator ContextIterator;
+    if (!w->d_func()->gestureContext.isEmpty()) {
+        for(ContextIterator it = w->d_func()->gestureContext.begin(),
+            e = w->d_func()->gestureContext.end(); it != e; ++it) {
+            types.insert(it.key());
+            contexts.insertMulti(w, it.key());
+        }
+    }
+    // find all gesture contexts for the widget tree
+    w = w->isWindow() ? 0 : w->parentWidget();
+    while (w)
+    {
+        for (ContextIterator it = w->d_func()->gestureContext.begin(),
+             e = w->d_func()->gestureContext.end(); it != e; ++it) {
+            if (it.value() == Qt::WidgetWithChildrenGesture) {
+                if (!types.contains(it.key())) {
+                    types.insert(it.key());
+                    contexts.insertMulti(w, it.key());
+                }
+            }
+        }
+        if (w->isWindow())
+            break;
+        w = w->parentWidget();
+    }
+    return filterEventThroughContexts(contexts, event);
+}
+
+bool QGestureManager::filterEvent(QGraphicsObject *receiver, QEvent *event)
+{
+    QSet<Qt::GestureType> types;
+    QMap<QObject *, Qt::GestureType> contexts;
+    QGraphicsObject *item = receiver;
+    if (!item->QGraphicsItem::d_func()->gestureContext.isEmpty()) {
+        typedef QMap<Qt::GestureType, Qt::GestureContext>::const_iterator ContextIterator;
+        for(ContextIterator it = item->QGraphicsItem::d_func()->gestureContext.begin(),
+            e = item->QGraphicsItem::d_func()->gestureContext.end(); it != e; ++it) {
+            types.insert(it.key());
+            contexts.insertMulti(item, it.key());
+        }
+    }
+    // find all gesture contexts for the graphics object tree
+    item = item->parentObject();
+    while (item)
+    {
+        typedef QMap<Qt::GestureType, Qt::GestureContext>::const_iterator ContextIterator;
+        for (ContextIterator it = item->QGraphicsItem::d_func()->gestureContext.begin(),
+             e = item->QGraphicsItem::d_func()->gestureContext.end(); it != e; ++it) {
+            if (it.value() == Qt::ItemWithChildrenGesture) {
+                if (!types.contains(it.key()))
+                    contexts.insertMulti(item, it.key());
+            }
+        }
+        item = item->parentObject();
+    }
+    return filterEventThroughContexts(contexts, event);
+}
+
+bool QGestureManager::filterEvent(QGesture *state, QEvent *event)
+{
+    QMap<QObject *, Qt::GestureType> contexts;
+    contexts.insert(state, state->gestureType());
+    return filterEventThroughContexts(contexts, event);
+}
+
+void QGestureManager::getGestureTargets(const QSet<QGesture*> &gestures,
+    QMap<QWidget *, QList<QGesture *> > *conflicts,
+    QMap<QWidget *, QList<QGesture *> > *normal)
+{
+    typedef QHash<Qt::GestureType, QHash<QWidget *, QGesture *> > GestureByTypes;
+    GestureByTypes gestureByTypes;
+
+    // sort gestures by types
+    foreach (QGesture *gesture, gestures) {
+        QWidget *receiver = gestureTargets.value(gesture, 0);
+        Q_ASSERT(receiver);
+        gestureByTypes[gesture->gestureType()].insert(receiver, gesture);
+    }
+
+    // for each gesture type
+    foreach (Qt::GestureType type, gestureByTypes.keys()) {
+        QHash<QWidget *, QGesture *> gestures = gestureByTypes.value(type);
+        foreach (QWidget *widget, gestures.keys()) {
+            QWidget *w = widget->parentWidget();
+            while (w) {
+                QMap<Qt::GestureType, Qt::GestureContext>::const_iterator it
+                        = w->d_func()->gestureContext.find(type);
+                if (it != w->d_func()->gestureContext.end()) {
+                    // i.e. 'w' listens to gesture 'type'
+                    Qt::GestureContext context = it.value();
+                    if (context == Qt::WidgetWithChildrenGesture && w != widget) {
+                        // conflicting gesture!
+                        (*conflicts)[widget].append(gestures[widget]);
+                        break;
+                    }
+                }
+                if (w->isWindow()) {
+                    w = 0;
+                    break;
+                }
+                w = w->parentWidget();
+            }
+            if (!w)
+                (*normal)[widget].append(gestures[widget]);
+        }
+    }
+}
+
+void QGestureManager::deliverEvents(const QSet<QGesture *> &gestures,
+                                    QSet<QGesture *> *undeliveredGestures)
 {
     if (gestures.isEmpty())
         return;
 
-    // group gestures by widgets
-    typedef QMap<QObject *, QList<QGesture *> > GesturesPerReceiver;
-    GesturesPerReceiver groupedGestures;
-    // for conflicted gestures the key is always the innermost widget (i.e. the child)
-    GesturesPerReceiver conflictedGestures;
-    QMultiHash<QObject *, QGesture *> objectGestures;
+    typedef QMap<QWidget *, QList<QGesture *> > GesturesPerWidget;
+    GesturesPerWidget conflictedGestures;
+    GesturesPerWidget normalStartedGestures;
 
-    foreach (QGesture *gesture, gestures) {
-        QObject *target = gestureTargets.value(gesture, 0);
+    QSet<QGesture *> startedGestures;
+    // first figure out the initial receivers of gestures
+    for (QSet<QGesture *>::const_iterator it = gestures.begin(),
+         e = gestures.end(); it != e; ++it) {
+        QGesture *gesture = *it;
+        QWidget *target = gestureTargets.value(gesture, 0);
         if (!target) {
+            // the gesture has just started and doesn't have a target yet.
             Q_ASSERT(gesture->state() == Qt::GestureStarted);
             if (gesture->hasHotSpot()) {
-                // guess the target using the hotspot of the gesture
+                // guess the target widget using the hotspot of the gesture
                 QPoint pt = gesture->hotSpot().toPoint();
-                if (!pt.isNull()) {
-                    if (QWidget *w = qApp->topLevelAt(pt))
-                        target = w->childAt(w->mapFromGlobal(pt));
+                if (QWidget *w = qApp->topLevelAt(pt)) {
+                    target = w->childAt(w->mapFromGlobal(pt));
                 }
+            } else {
+                // or use the context of the gesture
+                QObject *context = gestureOwners.value(gesture, 0);
+                if (context->isWidgetType())
+                    target = static_cast<QWidget *>(context);
             }
-            if (!target) {
-                target = gesture->targetObject();
-                if (!target)
-                    target = lastReceiver;
-            }
+            if (target)
+                gestureTargets.insert(gesture, target);
         }
+
+        Qt::GestureType gestureType = gesture->gestureType();
+        Q_ASSERT(gestureType != Qt::CustomGesture);
+
         if (target) {
-            gestureTargets.insert(gesture, target);
-            if (target->isWidgetType())
-                objectGestures.insert(target, gesture);
-            groupedGestures[target].append(gesture);
+            if (gesture->state() == Qt::GestureStarted) {
+                startedGestures.insert(gesture);
+            } else {
+                normalStartedGestures[target].append(gesture);
+            }
         } else {
-            qWarning() << "QGestureManager::deliverEvent: could not find the target for gesture"
+            DEBUG() << "QGestureManager::deliverEvent: could not find the target for gesture"
                     << gesture->gestureType();
+            qWarning("QGestureManager::deliverEvent: could not find the target for gesture");
+            undeliveredGestures->insert(gesture);
         }
     }
 
-    typedef QMultiHash<QObject *, QGesture *>::const_iterator ObjectGesturesIterator;
-    for (ObjectGesturesIterator it = objectGestures.begin(), e = objectGestures.end(); it != e; ++it) {
-        QObject *object1 = it.key();
-        QWidget *widget1 = qobject_cast<QWidget *>(object1);
-        QGraphicsObject *item1 = qobject_cast<QGraphicsObject *>(object1);
-        QGesture *gesture1 = it.value();
-        ObjectGesturesIterator cit = it;
-        for (++cit; cit != e; ++cit) {
-            QObject *object2 = cit.key();
-            QWidget *widget2 = qobject_cast<QWidget *>(object2);
-            QGraphicsObject *item2 = qobject_cast<QGraphicsObject *>(object2);
-            QGesture *gesture2 = cit.value();
-            // TODO: ugly, rewrite this.
-            if ((widget1 && widget2 && widget2->isAncestorOf(widget1)) ||
-                (item1 && item2 && item2->isAncestorOf(item1))) {
-                groupedGestures[object2].removeOne(gesture2);
-                groupedGestures[object1].removeOne(gesture1);
-                conflictedGestures[object1].append(gesture1);
-            } else if ((widget1 && widget2 && widget1->isAncestorOf(widget2)) ||
-                       (item1 && item2 && item1->isAncestorOf(item2))) {
-                groupedGestures[object2].removeOne(gesture2);
-                groupedGestures[object1].removeOne(gesture1);
-                conflictedGestures[object2].append(gesture2);
-            }
-        }
-    }
-
-    DEBUG() << "deliverEvents: conflicted =" << conflictedGestures.values()
-            << " grouped =" << groupedGestures.values();
+    getGestureTargets(startedGestures, &conflictedGestures, &normalStartedGestures);
+    DEBUG() << "QGestureManager::deliverEvents:"
+            << "\nstarted: " << startedGestures
+            << "\nconflicted: " << conflictedGestures
+            << "\nnormal: " << normalStartedGestures
+            << "\n";
 
     // if there are conflicting gestures, send the GestureOverride event
-    for (GesturesPerReceiver::const_iterator it = conflictedGestures.begin(),
+    for (GesturesPerWidget::const_iterator it = conflictedGestures.begin(),
         e = conflictedGestures.end(); it != e; ++it) {
+        QWidget *receiver = it.key();
+        QList<QGesture *> gestures = it.value();
         DEBUG() << "QGestureManager::deliverEvents: sending GestureOverride to"
-                << it.key()
-                << " gestures:" << it.value();
-        QGestureEvent event(it.value());
+                << receiver
+                << "gestures:" << gestures;
+        QGestureEvent event(gestures);
         event.t = QEvent::GestureOverride;
+        // mark event and individual gestures as ignored
         event.ignore();
-        QApplication::sendEvent(it.key(), &event);
-        if (!event.isAccepted()) {
-            // nobody accepted the GestureOverride, put it back to deliver to
-            // the closest context (i.e. to the inner-most widget).
-            DEBUG() <<" override was not accepted";
-            groupedGestures[it.key()].append(it.value());
+        foreach(QGesture *g, gestures)
+            event.setAccepted(g, false);
+
+        QApplication::sendEvent(receiver, &event);
+        bool eventAccepted = event.isAccepted();
+        foreach(QGesture *gesture, event.allGestures()) {
+            if (eventAccepted || event.isAccepted(gesture)) {
+                QWidget *w = event.d_func()->targetWidgets.value(gesture->gestureType(), 0);
+                Q_ASSERT(w);
+                DEBUG() << "override event: gesture was accepted:" << gesture << w;
+                QList<QGesture *> &gestures = normalStartedGestures[w];
+                gestures.append(gesture);
+                // override the target
+                gestureTargets[gesture] = w;
+            } else {
+                DEBUG() << "override event: gesture wasn't accepted. putting back:" << gesture;
+                QList<QGesture *> &gestures = normalStartedGestures[receiver];
+                gestures.append(gesture);
+            }
         }
     }
 
-    for (GesturesPerReceiver::const_iterator it = groupedGestures.begin(),
-        e = groupedGestures.end(); it != e; ++it) {
+    // delivering gestures that are not in conflicted state
+    for (GesturesPerWidget::const_iterator it = normalStartedGestures.begin(),
+        e = normalStartedGestures.end(); it != e; ++it) {
         if (!it.value().isEmpty()) {
             DEBUG() << "QGestureManager::deliverEvents: sending to" << it.key()
-                    << " gestures:" << it.value();
+                    << "gestures:" << it.value();
             QGestureEvent event(it.value());
             QApplication::sendEvent(it.key(), &event);
         }
@@ -452,7 +527,8 @@ void QGestureManager::timerEvent(QTimerEvent *event)
             timer.stop();
             QGesture *gesture = it.key();
             it = maybeGestures.erase(it);
-            DEBUG() << "QGestureManager::timerEvent: gesture stopped due to timeout:" << gesture;
+            DEBUG() << "QGestureManager::timerEvent: gesture stopped due to timeout:"
+                    << gesture;
             QGestureRecognizer *recognizer = gestureToRecognizer.value(gesture, 0);
             if (recognizer)
                 recognizer->reset(gesture);
diff --git a/src/gui/kernel/qgesturemanager_p.h b/src/gui/kernel/qgesturemanager_p.h
index c61819f..f0e7225 100644
--- a/src/gui/kernel/qgesturemanager_p.h
+++ b/src/gui/kernel/qgesturemanager_p.h
@@ -61,6 +61,7 @@
 QT_BEGIN_NAMESPACE
 
 class QBasicTimer;
+class QGraphicsObject;
 class QGestureManager : public QObject
 {
     Q_OBJECT
@@ -71,13 +72,17 @@ public:
     Qt::GestureType registerGestureRecognizer(QGestureRecognizer *recognizer);
     void unregisterGestureRecognizer(Qt::GestureType type);
 
-    bool filterEvent(QObject *receiver, QEvent *event);
+    bool filterEvent(QWidget *receiver, QEvent *event);
+    bool filterEvent(QGesture *receiver, QEvent *event);
+    bool filterEvent(QGraphicsObject *receiver, QEvent *event);
 
     // declared in qapplication.cpp
     static QGestureManager* instance();
 
 protected:
     void timerEvent(QTimerEvent *event);
+    bool filterEventThroughContexts(const QMap<QObject *, Qt::GestureType> &contexts,
+                                    QEvent *event);
 
 private:
     QMultiMap<Qt::GestureType, QGestureRecognizer *> recognizers;
@@ -109,15 +114,20 @@ private:
         }
     };
 
-    QMap<ObjectGesture, QWeakPointer<QGesture> > objectGestures;
+    QMap<ObjectGesture, QGesture *> objectGestures;
     QMap<QGesture *, QGestureRecognizer *> gestureToRecognizer;
+    QHash<QGesture *, QObject *> gestureOwners;
 
-    QHash<QGesture *, QObject *> gestureTargets;
+    QHash<QGesture *, QWidget *> gestureTargets;
 
     int lastCustomGestureId;
 
     QGesture *getState(QObject *widget, Qt::GestureType gesture);
-    void deliverEvents(const QSet<QGesture *> &gestures, QObject *lastReceiver);
+    void deliverEvents(const QSet<QGesture *> &gestures,
+                       QSet<QGesture *> *undeliveredGestures);
+    void getGestureTargets(const QSet<QGesture*> &gestures,
+                           QMap<QWidget *, QList<QGesture *> > *conflicts,
+                           QMap<QWidget *, QList<QGesture *> > *normal);
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qmacgesturerecognizer_mac.mm b/src/gui/kernel/qmacgesturerecognizer_mac.mm
index 7b19a54..7019580 100644
--- a/src/gui/kernel/qmacgesturerecognizer_mac.mm
+++ b/src/gui/kernel/qmacgesturerecognizer_mac.mm
@@ -218,7 +218,7 @@ QMacPanGestureRecognizer::filterEvent(QGesture *gesture, QObject *target, QEvent
                 const QPointF p = QCursor::pos();
                 const QPointF posOffset = p - _lastPos;
                 g->setLastOffset(g->offset());
-                g->setOffset(QSizeF(posOffset.x(), posOffset.y()));
+                g->setOffset(QPointF(posOffset.x(), posOffset.y()));
                 g->setTotalOffset(g->lastOffset() + g->offset());
                 _lastPos = p;
                 return QGestureRecognizer::GestureTriggered;
@@ -256,9 +256,9 @@ void QMacPanGestureRecognizer::reset(QGesture *gesture)
     _startPos = QPointF();
     _lastPos = QPointF();
     _panCanceled = true;
-    g->setOffset(QSizeF(0, 0));
-    g->setLastOffset(QSizeF(0, 0));
-    g->setTotalOffset(QSizeF(0, 0));
+    g->setOffset(QPointF(0, 0));
+    g->setLastOffset(QPointF(0, 0));
+    g->setTotalOffset(QPointF(0, 0));
     g->setAcceleration(qreal(1));
     QGestureRecognizer::reset(gesture);
 }
diff --git a/src/gui/kernel/qstandardgestures.cpp b/src/gui/kernel/qstandardgestures.cpp
index dfc3499..a136379 100644
--- a/src/gui/kernel/qstandardgestures.cpp
+++ b/src/gui/kernel/qstandardgestures.cpp
@@ -73,7 +73,7 @@ QGestureRecognizer::Result QPanGestureRecognizer::filterEvent(QGesture *state, Q
         result = QGestureRecognizer::MaybeGesture;
         QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
         d->lastPosition = p.pos().toPoint();
-        d->lastOffset = d->totalOffset = d->offset = QSize();
+        d->lastOffset = d->totalOffset = d->offset = QPointF();
         break;
     }
     case QEvent::TouchEnd: {
@@ -83,7 +83,7 @@ QGestureRecognizer::Result QPanGestureRecognizer::filterEvent(QGesture *state, Q
                 QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);
                 d->lastOffset = d->offset;
                 d->offset =
-                        QSize(p1.pos().x() - p1.lastPos().x() + p2.pos().x() - p2.lastPos().x(),
+                        QPointF(p1.pos().x() - p1.lastPos().x() + p2.pos().x() - p2.lastPos().x(),
                               p1.pos().y() - p1.lastPos().y() + p2.pos().y() - p2.lastPos().y()) / 2;
                 d->totalOffset += d->offset;
             }
@@ -99,11 +99,11 @@ QGestureRecognizer::Result QPanGestureRecognizer::filterEvent(QGesture *state, Q
             QTouchEvent::TouchPoint p2 = ev->touchPoints().at(1);
             d->lastOffset = d->offset;
             d->offset =
-                    QSize(p1.pos().x() - p1.lastPos().x() + p2.pos().x() - p2.lastPos().x(),
+                    QPointF(p1.pos().x() - p1.lastPos().x() + p2.pos().x() - p2.lastPos().x(),
                           p1.pos().y() - p1.lastPos().y() + p2.pos().y() - p2.lastPos().y()) / 2;
             d->totalOffset += d->offset;
-            if (d->totalOffset.width() > 10  || d->totalOffset.height() > 10 ||
-                d->totalOffset.width() < -10 || d->totalOffset.height() < -10) {
+            if (d->totalOffset.x() > 10  || d->totalOffset.y() > 10 ||
+                d->totalOffset.x() < -10 || d->totalOffset.y() < -10) {
                 result = QGestureRecognizer::GestureTriggered;
             } else {
                 result = QGestureRecognizer::MaybeGesture;
@@ -128,7 +128,7 @@ void QPanGestureRecognizer::reset(QGesture *state)
     QPanGesture *pan = static_cast<QPanGesture*>(state);
     QPanGesturePrivate *d = pan->d_func();
 
-    d->totalOffset = d->lastOffset = d->offset = QSizeF();
+    d->totalOffset = d->lastOffset = d->offset = QPointF();
     d->lastPosition = QPoint();
     d->acceleration = 0;
 
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index c36c68a..102f4c9 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -93,6 +93,7 @@
 # include "qx11info_x11.h"
 #endif
 
+#include <private/qgraphicseffect_p.h>
 #include <private/qwindowsurface_p.h>
 #include <private/qbackingstore_p.h>
 #ifdef Q_WS_MAC
@@ -1788,12 +1789,29 @@ QRegion QWidgetPrivate::clipRegion() const
     return r;
 }
 
+void QWidgetPrivate::invalidateGraphicsEffectsRecursively()
+{
+    Q_Q(QWidget);
+    QWidget *w = q;
+    do {
+        if (w->graphicsEffect()) {
+            QWidgetEffectSourcePrivate *sourced =
+                static_cast<QWidgetEffectSourcePrivate *>(w->graphicsEffect()->source()->d_func());
+            if (!sourced->updateDueToGraphicsEffect)
+                w->graphicsEffect()->source()->d_func()->invalidateCache();
+        }
+        w = w->parentWidget();
+    } while (w);
+}
+
 void QWidgetPrivate::setDirtyOpaqueRegion()
 {
     Q_Q(QWidget);
 
     dirtyOpaqueChildren = true;
 
+    invalidateGraphicsEffectsRecursively();
+
     if (q->isWindow())
         return;
 
@@ -5197,6 +5215,10 @@ void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QP
                 paintEngine->d_func()->systemClip = QRegion();
             } else {
                 context.painter = sharedPainter;
+                if (sharedPainter->worldTransform() != sourced->lastEffectTransform) {
+                    sourced->invalidateCache();
+                    sourced->lastEffectTransform = sharedPainter->worldTransform();
+                }
                 sharedPainter->save();
                 sharedPainter->translate(offset);
                 graphicsEffect->draw(sharedPainter, source);
diff --git a/src/gui/kernel/qwidget_p.h b/src/gui/kernel/qwidget_p.h
index 24699c4..159a3f2 100644
--- a/src/gui/kernel/qwidget_p.h
+++ b/src/gui/kernel/qwidget_p.h
@@ -384,6 +384,7 @@ public:
     void setOpaque(bool opaque);
     void updateIsTranslucent();
     bool paintOnScreen() const;
+    void invalidateGraphicsEffectsRecursively();
 
     QRegion getOpaqueRegion() const;
     const QRegion &getOpaqueChildren() const;
@@ -778,7 +779,7 @@ class QWidgetEffectSourcePrivate : public QGraphicsEffectSourcePrivate
 {
 public:
     QWidgetEffectSourcePrivate(QWidget *widget)
-        : QGraphicsEffectSourcePrivate(), m_widget(widget), context(0)
+        : QGraphicsEffectSourcePrivate(), m_widget(widget), context(0), updateDueToGraphicsEffect(false)
     {}
 
     inline void detach()
@@ -791,7 +792,11 @@ public:
     { return m_widget; }
 
     inline void update()
-    { m_widget->update(); }
+    {
+        updateDueToGraphicsEffect = true;
+        m_widget->update();
+        updateDueToGraphicsEffect = false;
+    }
 
     inline bool isPixmap() const
     { return false; }
@@ -803,7 +808,7 @@ public:
         if (QWidget *parent = m_widget->parentWidget())
             parent->update();
         else
-            m_widget->update();
+            update();
     }
 
     inline const QStyleOption *styleOption() const
@@ -818,6 +823,8 @@ public:
 
     QWidget *m_widget;
     QWidgetPaintContext *context;
+    QTransform lastEffectTransform;
+    bool updateDueToGraphicsEffect;
 };
 
 inline QWExtra *QWidgetPrivate::extraData() const
diff --git a/src/gui/kernel/qwidget_x11.cpp b/src/gui/kernel/qwidget_x11.cpp
index 663178f..28676da 100644
--- a/src/gui/kernel/qwidget_x11.cpp
+++ b/src/gui/kernel/qwidget_x11.cpp
@@ -950,7 +950,7 @@ static void qt_x11_recreateWidget(QWidget *widget)
 
 static void qt_x11_recreateNativeWidgetsRecursive(QWidget *widget)
 {
-    if (widget->testAttribute(Qt::WA_NativeWindow))
+    if (widget->internalWinId())
         qt_x11_recreateWidget(widget);
 
     const QObjectList &children = widget->children();
diff --git a/src/gui/kernel/qwinnativepangesturerecognizer_win.cpp b/src/gui/kernel/qwinnativepangesturerecognizer_win.cpp
index 4619594..12d3058 100644
--- a/src/gui/kernel/qwinnativepangesturerecognizer_win.cpp
+++ b/src/gui/kernel/qwinnativepangesturerecognizer_win.cpp
@@ -97,11 +97,11 @@ QGestureRecognizer::Result QWinNativePanGestureRecognizer::filterEvent(QGesture
             return QGestureRecognizer::Ignore;
         }
         if (q->state() == Qt::NoGesture) {
-            d->lastOffset = d->totalOffset = d->offset = QSize();
+            d->lastOffset = d->totalOffset = d->offset = QPointF();
         } else {
             d->lastOffset = d->offset;
-            d->offset = QSize(ev->position.x() - d->lastPosition.x(),
-                              ev->position.y() - d->lastPosition.y());
+            d->offset = QPointF(ev->position.x() - d->lastPosition.x(),
+                                ev->position.y() - d->lastPosition.y());
             d->totalOffset += d->offset;
         }
         d->lastPosition = ev->position;
@@ -114,7 +114,7 @@ void QWinNativePanGestureRecognizer::reset(QGesture *state)
     QPanGesture *pan = static_cast<QPanGesture*>(state);
     QPanGesturePrivate *d = pan->d_func();
 
-    d->totalOffset = d->lastOffset = d->offset = QSizeF();
+    d->totalOffset = d->lastOffset = d->offset = QPointF();
     d->lastPosition = QPoint();
     d->acceleration = 0;
 
diff --git a/src/gui/painting/qbackingstore.cpp b/src/gui/painting/qbackingstore.cpp
index 7c07df8..3cd1402 100644
--- a/src/gui/painting/qbackingstore.cpp
+++ b/src/gui/painting/qbackingstore.cpp
@@ -56,6 +56,7 @@
 #include <private/qwindowsurface_raster_p.h>
 #include <private/qapplication_p.h>
 #include <private/qpaintengine_raster_p.h>
+#include <private/qgraphicseffect_p.h>
 
 #include "qgraphicssystem_p.h"
 
@@ -540,6 +541,8 @@ void QWidgetBackingStore::markDirty(const QRegion &rgn, QWidget *widget, bool up
     Q_ASSERT(widget->window() == tlw);
     Q_ASSERT(!rgn.isEmpty());
 
+    widget->d_func()->invalidateGraphicsEffectsRecursively();
+
     if (widget->d_func()->paintOnScreen()) {
         if (widget->d_func()->dirty.isEmpty()) {
             widget->d_func()->dirty = rgn;
@@ -615,6 +618,8 @@ void QWidgetBackingStore::markDirty(const QRect &rect, QWidget *widget, bool upd
     Q_ASSERT(widget->window() == tlw);
     Q_ASSERT(!rect.isEmpty());
 
+    widget->d_func()->invalidateGraphicsEffectsRecursively();
+
     if (widget->d_func()->paintOnScreen()) {
         if (widget->d_func()->dirty.isEmpty()) {
             widget->d_func()->dirty = QRegion(rect);
diff --git a/src/gui/painting/qbackingstore_p.h b/src/gui/painting/qbackingstore_p.h
index 94d756e..3288dae 100644
--- a/src/gui/painting/qbackingstore_p.h
+++ b/src/gui/painting/qbackingstore_p.h
@@ -97,6 +97,12 @@ public:
                 );
     }
 
+    // ### Qt 4.6: Merge into a template function (after MSVC isn't supported anymore).
+    void markDirty(const QRegion &rgn, QWidget *widget, bool updateImmediately = false,
+                   bool invalidateBuffer = false);
+    void markDirty(const QRect &rect, QWidget *widget, bool updateImmediately = false,
+                   bool invalidateBuffer = false);
+
 private:
     QWidget *tlw;
     QRegion dirtyOnScreen; // needsFlush
@@ -126,11 +132,6 @@ private:
     QRegion dirtyRegion(QWidget *widget = 0) const;
     QRegion staticContents(QWidget *widget = 0, const QRect &withinClipRect = QRect()) const;
 
-    // ### Qt 4.6: Merge into a template function (after MSVC isn't supported anymore).
-    void markDirty(const QRegion &rgn, QWidget *widget, bool updateImmediately = false,
-                   bool invalidateBuffer = false);
-    void markDirty(const QRect &rect, QWidget *widget, bool updateImmediately = false,
-                   bool invalidateBuffer = false);
     void markDirtyOnScreen(const QRegion &dirtyOnScreen, QWidget *widget, const QPoint &topLevelOffset);
 
     void removeDirtyWidget(QWidget *w);
diff --git a/src/gui/text/qfontdatabase_x11.cpp b/src/gui/text/qfontdatabase_x11.cpp
index 382c4fe..27ff003 100644
--- a/src/gui/text/qfontdatabase_x11.cpp
+++ b/src/gui/text/qfontdatabase_x11.cpp
@@ -752,7 +752,7 @@ QFontDef qt_FcPatternToQFontDef(FcPattern *pattern, const QFontDef &request)
         if (X11->display)
             dpi = QX11Info::appDpiY();
         else
-            dpi = 96; // ####
+            dpi = qt_defaultDpiY();
     }
 
     double size;
diff --git a/src/gui/widgets/qtextedit.cpp b/src/gui/widgets/qtextedit.cpp
index b894aa8..f477fee 100644
--- a/src/gui/widgets/qtextedit.cpp
+++ b/src/gui/widgets/qtextedit.cpp
@@ -2079,8 +2079,8 @@ void QTextEdit::setReadOnly(bool ro)
     } else {
         flags = Qt::TextEditorInteraction;
     }
-    setAttribute(Qt::WA_InputMethodEnabled, shouldEnableInputMethod(this));
     d->control->setTextInteractionFlags(flags);
+    setAttribute(Qt::WA_InputMethodEnabled, shouldEnableInputMethod(this));
 }
 
 /*!