Send enter to the child at the position of the QEnterEvent.

This was apparently done so in each of the widget_<platform>.cpp
in Qt 4.8. This then causes the cursor to be updated in
dispatchEnterLeave() on Windows and Linux.

Task-number: QTBUG-27871
Task-number: QTBUG-27585
Task-number: QTBUG-26424
Change-Id: Idf14cd96ccb36f7c2607853ed8b0024c36a5413c
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>

2 files changed, 6 insertions, 4 deletions

diff --git a/src/widgets/kernel/qwidgetwindow.cpp b/src/widgets/kernel/qwidgetwindow.cpp
index c11e36312f..056eabd2f4 100644
--- a/src/widgets/kernel/qwidgetwindow.cpp
+++ b/src/widgets/kernel/qwidgetwindow.cpp
@@ -261,8 +261,10 @@ void QWidgetWindow::handleEnterLeaveEvent(QEvent *event)
         }
     } else {
         const QEnterEvent *ee = static_cast<QEnterEvent *>(event);
-        QApplicationPrivate::dispatchEnterLeave(m_widget, 0, ee->screenPos());
-        qt_last_mouse_receiver = m_widget;
+        QWidget *child = m_widget->childAt(ee->pos());
+        QWidget *receiver = child ? child : m_widget;
+        QApplicationPrivate::dispatchEnterLeave(receiver, 0, ee->screenPos());
+        qt_last_mouse_receiver = receiver;
     }
 }
 
diff --git a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
index a70129c5f7..548b5ccf6a 100644
--- a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
+++ b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
@@ -8547,6 +8547,7 @@ void tst_QWidget::syntheticEnterLeave()
 
     MyWidget window;
     window.setWindowFlags(Qt::WindowStaysOnTopHint);
+    window.move(200, 200);
     window.resize(200, 200);
 
     MyWidget *child1 = new MyWidget(&window);
@@ -8636,8 +8637,6 @@ void tst_QWidget::syntheticEnterLeave()
 #ifndef QTEST_NO_CURSOR
 void tst_QWidget::taskQTBUG_4055_sendSyntheticEnterLeave()
 {
-    if (m_platform == QStringLiteral("windows") || m_platform == QStringLiteral("xcb"))
-        QSKIP("QTBUG-26424");
     class SELParent : public QWidget
     {
     public:
@@ -8665,6 +8664,7 @@ void tst_QWidget::taskQTBUG_4055_sendSyntheticEnterLeave()
     QCursor::setPos(QPoint(0,0));
 
      SELParent parent;
+     parent.move(200, 200);
      parent.resize(200, 200);
      SELChild child(&parent);
      child.resize(200, 200);