1 files changed, 97 insertions, 0 deletions
diff --git a/tests/auto/qwidget/tst_qwidget.cpp b/tests/auto/qwidget/tst_qwidget.cpp
index a1fc607..d76bbfa 100644
--- a/tests/auto/qwidget/tst_qwidget.cpp
+++ b/tests/auto/qwidget/tst_qwidget.cpp
@@ -404,6 +404,10 @@ private slots:
 
     void taskQTBUG_7532_tabOrderWithFocusProxy();
     void movedAndResizedAttributes();
+    void childAt();
+#ifdef Q_WS_MAC
+    void childAt_unifiedToolBar();
+#endif
 
 private:
     bool ensureScreenSize(int width, int height);
@@ -10347,5 +10351,98 @@ void tst_QWidget::movedAndResizedAttributes()
 #endif
 }
 
+void tst_QWidget::childAt()
+{
+    QWidget parent(0, Qt::FramelessWindowHint);
+    parent.resize(200, 200);
+
+    QWidget *child = new QWidget(&parent);
+    child->setPalette(Qt::red);
+    child->setAutoFillBackground(true);
+    child->setGeometry(20, 20, 160, 160);
+
+    QWidget *grandChild = new QWidget(child);
+    grandChild->setPalette(Qt::blue);
+    grandChild->setAutoFillBackground(true);
+    grandChild->setGeometry(-20, -20, 220, 220);
+
+    QVERIFY(!parent.childAt(19, 19));
+    QVERIFY(!parent.childAt(180, 180));
+    QCOMPARE(parent.childAt(20, 20), grandChild);
+    QCOMPARE(parent.childAt(179, 179), grandChild);
+
+    grandChild->setAttribute(Qt::WA_TransparentForMouseEvents);
+    QCOMPARE(parent.childAt(20, 20), child);
+    QCOMPARE(parent.childAt(179, 179), child);
+    grandChild->setAttribute(Qt::WA_TransparentForMouseEvents, false);
+
+    child->setMask(QRect(50, 50, 60, 60));
+
+    QVERIFY(!parent.childAt(69, 69));
+    QVERIFY(!parent.childAt(130, 130));
+    QCOMPARE(parent.childAt(70, 70), grandChild);
+    QCOMPARE(parent.childAt(129, 129), grandChild);
+
+    child->setAttribute(Qt::WA_MouseNoMask);
+    QCOMPARE(parent.childAt(69, 69), grandChild);
+    QCOMPARE(parent.childAt(130, 130), grandChild);
+    child->setAttribute(Qt::WA_MouseNoMask, false);
+
+    grandChild->setAttribute(Qt::WA_TransparentForMouseEvents);
+    QCOMPARE(parent.childAt(70, 70), child);
+    QCOMPARE(parent.childAt(129, 129), child);
+    grandChild->setAttribute(Qt::WA_TransparentForMouseEvents, false);
+
+    grandChild->setMask(QRect(80, 80, 40, 40));
+
+    QCOMPARE(parent.childAt(79, 79), child);
+    QCOMPARE(parent.childAt(120, 120), child);
+    QCOMPARE(parent.childAt(80, 80), grandChild);
+    QCOMPARE(parent.childAt(119, 119), grandChild);
+
+    grandChild->setAttribute(Qt::WA_MouseNoMask);
+
+    QCOMPARE(parent.childAt(79, 79), grandChild);
+    QCOMPARE(parent.childAt(120, 120), grandChild);
+}
+
+#ifdef Q_WS_MAC
+void tst_QWidget::childAt_unifiedToolBar()
+{
+    QLabel *label = new QLabel(QLatin1String("foo"));
+    QToolBar *toolBar = new QToolBar;
+    toolBar->addWidget(new QLabel("dummy"));
+    toolBar->addWidget(label);
+
+    QMainWindow mainWindow;
+    mainWindow.addToolBar(toolBar);
+    mainWindow.show();
+
+    // Calculate the top-left corner of the tool bar and the label (in mainWindow's coordinates).
+    QPoint labelTopLeft = label->mapTo(&mainWindow, QPoint());
+    QPoint toolBarTopLeft = toolBar->mapTo(&mainWindow, QPoint());
+
+    QCOMPARE(mainWindow.childAt(toolBarTopLeft), static_cast<QWidget *>(toolBar));
+    QCOMPARE(mainWindow.childAt(labelTopLeft), static_cast<QWidget *>(label));
+
+    // Enable unified tool bars.
+    mainWindow.setUnifiedTitleAndToolBarOnMac(true);
+    QTest::qWait(50);
+
+    // The tool bar is now in the "non-client" area of QMainWindow, i.e.
+    // outside the mainWindow's rect(), and since mapTo et al. doesn't work
+    // in that case (see commit 35667fd45ada49269a5987c235fdedfc43e92bb8),
+    // we use mapToGlobal/mapFromGlobal to re-calculate the corners.
+    QPoint oldToolBarTopLeft = toolBarTopLeft;
+    toolBarTopLeft = mainWindow.mapFromGlobal(toolBar->mapToGlobal(QPoint()));
+    QVERIFY(toolBarTopLeft != oldToolBarTopLeft);
+    QVERIFY(toolBarTopLeft.y() < 0);
+    labelTopLeft = mainWindow.mapFromGlobal(label->mapToGlobal(QPoint()));
+
+    QCOMPARE(mainWindow.childAt(toolBarTopLeft), static_cast<QWidget *>(toolBar));
+    QCOMPARE(mainWindow.childAt(labelTopLeft), static_cast<QWidget *>(label));
+}
+#endif
+
 QTEST_MAIN(tst_QWidget)
 #include "tst_qwidget.moc"