1 files changed, 113 insertions, 4 deletions

diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index 948ff28..c0fb1bb 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -1131,6 +1131,9 @@ void QGraphicsItemPrivate::setParentItemHelper(QGraphicsItem *newParent, const Q
         }
     }
 
+    // Resolve depth.
+    invalidateDepthRecursively();
+
     if ((parent = newParent)) {
         if (parent->d_func()->scene && parent->d_func()->scene != scene) {
             // Move this item to its new parent's scene
@@ -1181,8 +1184,6 @@ void QGraphicsItemPrivate::setParentItemHelper(QGraphicsItem *newParent, const Q
         }
     }
 
-    // Resolve depth.
-    invalidateDepthRecursively();
     dirtySceneTransform = 1;
 
     // Restore the sub focus chain.
@@ -1883,7 +1884,8 @@ void QGraphicsItem::setCacheMode(CacheMode mode, const QSize &logicalCacheSize)
     d_ptr->cacheMode = mode;
     bool noVisualChange = (mode == NoCache && lastMode == NoCache)
                           || (mode == NoCache && lastMode == DeviceCoordinateCache)
-                          || (mode == DeviceCoordinateCache && lastMode == NoCache);
+                          || (mode == DeviceCoordinateCache && lastMode == NoCache)
+                          || (mode == DeviceCoordinateCache && lastMode == DeviceCoordinateCache);
     if (mode == NoCache) {
         d_ptr->removeExtraItemCache();
     } else {
@@ -2177,8 +2179,12 @@ void QGraphicsItemPrivate::setVisibleHelper(bool newVisible, bool explicitly, bo
         QGraphicsItemCache *c = (QGraphicsItemCache *)qVariantValue<void *>(extra(ExtraCacheData));
         if (c)
             c->purge();
-        if (scene)
+        if (scene) {
+#ifndef QT_NO_GRAPHICSEFFECT
+            invalidateParentGraphicsEffectsRecursively();
+#endif //QT_NO_GRAPHICSEFFECT
             scene->d_func()->markDirty(q_ptr, QRectF(), /*invalidateChildren=*/false, /*force=*/true);
+        }
     }
 
     // Certain properties are dropped as an item becomes invisible.
@@ -5226,6 +5232,8 @@ void QGraphicsItemPrivate::addChild(QGraphicsItem *child)
     needSortChildren = 1; // ### maybe 0
     child->d_ptr->siblingIndex = children.size();
     children.append(child);
+    if (isObject)
+        emit static_cast<QGraphicsObject *>(q_ptr)->childrenChanged();
 }
 
 /*!
@@ -5248,6 +5256,8 @@ void QGraphicsItemPrivate::removeChild(QGraphicsItem *child)
     // the child is not guaranteed to be at the index after the list is sorted.
     // (see ensureSortedChildren()).
     child->d_ptr->siblingIndex = -1;
+    if (isObject)
+        emit static_cast<QGraphicsObject *>(q_ptr)->childrenChanged();
 }
 
 /*!
@@ -7455,6 +7465,88 @@ void QGraphicsObject::ungrabGesture(Qt::GestureType gesture)
     }
 }
 
+void QGraphicsItemPrivate::append(QDeclarativeListProperty<QGraphicsObject> *list, QGraphicsObject *item)
+{
+    QGraphicsItemPrivate::get(item)->setParentItemHelper(static_cast<QGraphicsObject *>(list->object), /*newParentVariant=*/0, /*thisPointerVariant=*/0);
+}
+
+/*!
+    Returns a list of this item's children.
+
+    The items are sorted by stacking order. This takes into account both the
+    items' insertion order and their Z-values.
+
+*/
+QDeclarativeListProperty<QGraphicsObject> QGraphicsItemPrivate::childrenList()
+{
+    Q_Q(QGraphicsItem);
+    if (isObject) {
+        QGraphicsObject *that = static_cast<QGraphicsObject *>(q);
+        return QDeclarativeListProperty<QGraphicsObject>(that, &children, QGraphicsItemPrivate::append);
+    } else {
+        //QGraphicsItem is not supported for this property
+        return QDeclarativeListProperty<QGraphicsObject>();
+    }
+}
+
+/*!
+  \internal
+  Returns the width of the item
+  Reimplemented by QGraphicsWidget
+*/
+qreal QGraphicsItemPrivate::width() const
+{
+    return 0;
+}
+
+/*!
+  \internal
+  Set the width of the item
+  Reimplemented by QGraphicsWidget
+*/
+void QGraphicsItemPrivate::setWidth(qreal w)
+{
+    Q_UNUSED(w);
+}
+
+/*!
+  \internal
+  Reset the width of the item
+  Reimplemented by QGraphicsWidget
+*/
+void QGraphicsItemPrivate::resetWidth()
+{
+}
+
+/*!
+  \internal
+  Returns the height of the item
+  Reimplemented by QGraphicsWidget
+*/
+qreal QGraphicsItemPrivate::height() const
+{
+    return 0;
+}
+
+/*!
+  \internal
+  Set the height of the item
+  Reimplemented by QGraphicsWidget
+*/
+void QGraphicsItemPrivate::setHeight(qreal h)
+{
+    Q_UNUSED(h);
+}
+
+/*!
+  \internal
+  Reset the height of the item
+  Reimplemented by QGraphicsWidget
+*/
+void QGraphicsItemPrivate::resetHeight()
+{
+}
+
 /*!
   \property QGraphicsObject::parent
   \brief the parent of the item
@@ -7641,6 +7733,23 @@ void QGraphicsObject::ungrabGesture(Qt::GestureType gesture)
   \sa scale, rotation, QGraphicsItem::transformOriginPoint()
 */
 
+/*!
+    \fn void QGraphicsObject::widthChanged()
+    \internal
+*/
+
+/*!
+    \fn void QGraphicsObject::heightChanged()
+    \internal
+*/
+
+/*!
+
+  \fn QGraphicsObject::childrenChanged()
+
+  This signal gets emitted whenever the children list changes
+  \internal
+*/
 
 /*!
     \class QAbstractGraphicsShapeItem