GraphicsView: use range-based for instead of foreach

Change-Id: I8e1b50bcbffdb492dc10662150b51b0eed1e228e
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

src/widgets/graphicsview/qgraphicsanchorlayout_p.cpp

@@ -2526,7 +2526,7 @@ QGraphicsAnchorLayoutPrivate::getGraphParts(Orientation orientation)
 
             // Check if this constraint have some overlap with current
             // trunk variables...
-            foreach (QSimplexVariable *ad, trunkVariables) {
+            for (QSimplexVariable *ad : qAsConst(trunkVariables)) {
                 if (c->variables.contains(ad)) {
                     match = true;
                     break;

src/widgets/graphicsview/qgraphicsitem.cpp

@@ -7308,7 +7308,7 @@ void QGraphicsItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
             selectedItems = d_ptr->scene->selectedItems();
             initialPositions = d_ptr->scene->d_func()->movingItemsInitialPositions;
             if (initialPositions.isEmpty()) {
-                foreach (QGraphicsItem *item, selectedItems)
+                for (QGraphicsItem *item : qAsConst(selectedItems))
                     initialPositions[item] = item->pos();
                 initialPositions[this] = pos();
             }

src/widgets/graphicsview/qgraphicsscene.cpp

@@ -6391,7 +6391,7 @@ void QGraphicsScenePrivate::gestureEventHandler(QGestureEvent *event)
         ev.setWidget(event->widget());
         sendEvent(receiver.data(), &ev);
         QSet<QGesture *> ignoredGestures;
-        foreach (QGesture *g, gestures) {
+        for (QGesture *g : qAsConst(gestures)) {
             if (!ev.isAccepted() && !ev.isAccepted(g)) {
                 // if the gesture was ignored by its target, we will update the
                 // targetItems list with a possible target items (items that

src/widgets/graphicsview/qgraphicsview.cpp

@@ -2703,7 +2703,7 @@ void QGraphicsView::updateScene(const QList<QRectF> &rects)
         dirtyViewportRects << xrect;
     }
 
-    foreach (const QRect &rect, dirtyViewportRects) {
+    for (const QRect &rect : qAsConst(dirtyViewportRects)) {
         // Add the exposed rect to the update region. In rect update
         // mode, we only count the bounding rect of items.
         if (!boundingRectUpdate) {