Allow descendant chains to simultaneously be hovered.

Matches GV behaviour. Also fixes a bug in QSGMouseArea,
which we aren't fixing for QtQuick 1.

Task-number: QTBUG-18175
Change-Id: I4ecac7b908504f28de830732c731281407d7b0bc
Reviewed-on: http://codereview.qt.nokia.com/2422
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Michael Brasser <michael.brasser@nokia.com>

2 files changed, 80 insertions, 0 deletions

diff --git a/tests/auto/declarative/qsgmousearea/data/hoverPropagation.qml b/tests/auto/declarative/qsgmousearea/data/hoverPropagation.qml
new file mode 100644
index 0000000000..c47c794132
--- /dev/null
+++ b/tests/auto/declarative/qsgmousearea/data/hoverPropagation.qml
@@ -0,0 +1,54 @@
+import QtQuick 2.0
+
+Item{
+    width: 400
+    height: 200
+    property bool point1: ma2.containsMouse && !ma1.containsMouse
+    property bool point2: ma3.containsMouse && ma4.containsMouse
+    Rectangle{
+        width: 200
+        height: 200
+        color: ma1.containsMouse ? "red" : "white"
+        MouseArea{
+            id: ma1
+            hoverEnabled: true
+            anchors.fill: parent
+        }
+        Rectangle{
+            width: 100
+            height: 100
+            color: ma2.containsMouse ? "blue" : "white"
+            MouseArea{
+                id: ma2
+                hoverEnabled: true
+                anchors.fill: parent
+            }
+        }
+    }
+
+    Item{
+        x:200
+        Rectangle{
+            width: 200
+            height: 200
+            color: ma3.containsMouse ? "yellow" : "white"
+            Rectangle{
+                width: 100
+                height: 100
+                color: ma4.containsMouse ? "green" : "white"
+            }
+        }
+        MouseArea{
+            id: ma3
+            hoverEnabled: true
+            width: 200
+            height: 200
+            MouseArea{
+                id: ma4
+                width: 100
+                height: 100
+                hoverEnabled: true
+            }
+        }
+    }
+}
diff --git a/tests/auto/declarative/qsgmousearea/tst_qsgmousearea.cpp b/tests/auto/declarative/qsgmousearea/tst_qsgmousearea.cpp
index 8e711e6ceb..e9788cd147 100644
--- a/tests/auto/declarative/qsgmousearea/tst_qsgmousearea.cpp
+++ b/tests/auto/declarative/qsgmousearea/tst_qsgmousearea.cpp
@@ -75,6 +75,7 @@ private slots:
     void testQtQuick11Attributes();
     void testQtQuick11Attributes_data();
     void hoverPosition();
+    void hoverPropagation();
 
 private:
     QSGView *createView();
@@ -741,6 +742,31 @@ void tst_QSGMouseArea::hoverPosition()
     delete canvas;
 }
 
+void tst_QSGMouseArea::hoverPropagation()
+{
+    //QTBUG-18175, to behave like GV did.
+    QSGView *canvas = createView();
+    canvas->setSource(QUrl::fromLocalFile(SRCDIR "/data/hoverPropagation.qml"));
+
+    QSGItem *root = canvas->rootObject();
+    QVERIFY(root != 0);
+
+    QCOMPARE(root->property("point1").toBool(), false);
+    QCOMPARE(root->property("point2").toBool(), false);
+
+    QMouseEvent moveEvent(QEvent::MouseMove, QPoint(32, 32), Qt::NoButton, Qt::NoButton, 0);
+    QApplication::sendEvent(canvas, &moveEvent);
+    QCOMPARE(root->property("point1").toBool(), true);
+    QCOMPARE(root->property("point2").toBool(), false);
+
+    QMouseEvent moveEvent2(QEvent::MouseMove, QPoint(232, 32), Qt::NoButton, Qt::NoButton, 0);
+    QApplication::sendEvent(canvas, &moveEvent2);
+    QCOMPARE(root->property("point1").toBool(), false);
+    QCOMPARE(root->property("point2").toBool(), true);
+
+    delete canvas;
+}
+
 QTEST_MAIN(tst_QSGMouseArea)
 
 #include "tst_qsgmousearea.moc"