166     void initialShow();

   167     void initialShow2();

  2861 void tst_QGraphicsWidget::initialShow()

  2862 {

  2863     class MyGraphicsWidget : public QGraphicsWidget

  2864     { public:

  2865         MyGraphicsWidget() : repaints(0) {}

  2866         int repaints;

  2867         void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget*) { ++repaints; }

  2868         void polishEvent() { update(); }

  2869     };

  2870 

  2871     QGraphicsScene scene;

  2872     MyGraphicsWidget *widget = new MyGraphicsWidget;

  2873 

  2874     QGraphicsView view(&scene);

  2875     view.show();

  2876     QTest::qWaitForWindowShown(&view);

  2877 

  2878     QTest::qWait(100);

  2879     scene.addItem(widget);

  2880     QTest::qWait(100);

  2881 

  2882     QCOMPARE(widget->repaints, 1);

  2883 }

  2884 

  2885 void tst_QGraphicsWidget::initialShow2()

  2886 {

  2887     class MyGraphicsWidget : public QGraphicsWidget

  2888     { public:

  2889         MyGraphicsWidget() : repaints(0) {}

  2890         int repaints;

  2891         void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget*) { ++repaints; }

  2892         void polishEvent() { update(); }

  2893     };

  2894 

  2895     // Don't let paint events triggered by the windowing system

  2896     // influence our test case. We're only interested in knowing

  2897     // whether a QGraphicsWidget generates an additional repaint

  2898     // on the inital show. Hence create a dummy scenario to find out

  2899     // how many repaints we should expect.

  2900     QGraphicsScene dummyScene(0, 0, 200, 200);

  2901     dummyScene.addItem(new QGraphicsRectItem(0, 0, 100, 100));

  2902 

  2903     QGraphicsView *dummyView = new QGraphicsView(&dummyScene);

  2904     dummyView->setWindowFlags(Qt::X11BypassWindowManagerHint);

  2905     EventSpy paintSpy(dummyView->viewport(), QEvent::Paint);

  2906     dummyView->show();

  2907     QTest::qWaitForWindowShown(dummyView);

  2908     const int expectedRepaintCount = paintSpy.count();

  2909     delete dummyView;

  2910     dummyView = 0;

  2911     QTest::qWait(200);

  2912 

  2913     MyGraphicsWidget *widget = new MyGraphicsWidget;

  2914     widget->resize(100, 100);

  2915 

  2916     QGraphicsScene scene(0, 0, 200, 200);

  2917     scene.addItem(widget);

  2918 

  2919     QGraphicsView view(&scene);

  2920     view.setWindowFlags(Qt::X11BypassWindowManagerHint);

  2921     view.show();

  2922     QTest::qWaitForWindowShown(&view);

  2923 

  2924     QCOMPARE(widget->repaints, expectedRepaintCount);

  2925 }

  2926