2 files changed, 84 insertions, 0 deletions

diff --git a/src/gui/graphicsview/qgraphicswidget.cpp b/src/gui/graphicsview/qgraphicswidget.cpp
index d52337dfb..525cf29a3 100644
--- a/src/gui/graphicsview/qgraphicswidget.cpp
+++ b/src/gui/graphicsview/qgraphicswidget.cpp
@@ -411,6 +411,8 @@ void QGraphicsWidget::setGeometry(const QRectF &rect)
     QSizeF oldSize = size();
     QGraphicsLayoutItem::setGeometry(newGeom);
 
+    wd->invalidateCachedClipPathRecursively();
+
     // Send resize event
     bool resized = newGeom.size() != oldSize;
     if (resized) {
diff --git a/tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp b/tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp
index 8fa4dc357..cb5f057b8 100644
--- a/tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp
+++ b/tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp
@@ -149,6 +149,7 @@ private slots:
     void closePopupOnOutsideClick();
     void defaultSize();
     void shortcutsDeletion();
+    void ensureClipping();
 
     // Task fixes
     void task236127_bspTreeIndexFails();
@@ -1928,6 +1929,87 @@ void tst_QGraphicsWidget::task250119_shortcutContext()
     scene.removeItem(&w_signal);
 }
 
+class ClippingAndTransformsScene : public QGraphicsScene
+{
+public:
+    QList<QGraphicsItem *> drawnItems;
+protected:
+    void drawItems(QPainter *painter, int numItems, QGraphicsItem *items[],
+                   const QStyleOptionGraphicsItem options[], QWidget *widget = 0)
+    {
+        drawnItems.clear();
+        for (int i = 0; i < numItems; ++i)
+            drawnItems << items[i];
+        QGraphicsScene::drawItems(painter, numItems, items, options, widget);
+    }
+};
+
+class RectWidget : public QGraphicsWidget
+{
+public:
+
+    RectWidget(Qt::GlobalColor color, QGraphicsItem *parent=0) : QGraphicsWidget(parent), mColor(color) {}
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
+    {
+        painter->setBrush(QBrush(mColor));
+        painter->drawRect(boundingRect());
+    }
+
+    Qt::GlobalColor mColor;
+};
+
+class RectItem : public QGraphicsItem
+{
+public:
+
+    RectItem(Qt::GlobalColor color, QGraphicsItem *parent=0) : QGraphicsItem(parent), mColor(color) {}
+
+    QRectF boundingRect() const
+    {return QRectF(10,10,50,50);}
+
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
+    {
+        painter->setBrush(QBrush(mColor));
+        painter->drawRect(boundingRect());
+    }
+
+    Qt::GlobalColor mColor;
+};
+
+void tst_QGraphicsWidget::ensureClipping()
+{
+    ClippingAndTransformsScene scene;
+    scene.setSceneRect(-50, -50, 200, 200);
+
+    //A root that clip children
+    RectWidget *clipWidget = new RectWidget(Qt::black);
+    scene.addItem(clipWidget);
+
+    clipWidget->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
+
+    //a child
+    RectWidget *childWidget = new RectWidget(Qt::red, clipWidget);
+    clipWidget->setGeometry(QRectF(10, 10, 100, 100));
+    childWidget->setGeometry(QRectF(25, 25, 50, 50));
+
+    //We put a QGraphicsItem to be sure this one is also paint
+    RectItem *childitem = new RectItem(Qt::blue, clipWidget);
+
+    QGraphicsView view(&scene);
+    view.show();
+#ifdef Q_WS_X11
+    qt_x11_wait_for_window_manager(&view);
+#endif
+    QTest::qWait(250);
+
+    QList<QGraphicsItem *> expected;
+    expected << clipWidget << childWidget << childitem;
+    QVERIFY(scene.drawnItems.contains(clipWidget));
+    QVERIFY(scene.drawnItems.contains(childWidget));
+    QVERIFY(scene.drawnItems.contains(childitem));
+}
+
 QTEST_MAIN(tst_QGraphicsWidget)
 #include "tst_qgraphicswidget.moc"