PathView regression: dragging the path didn't update currentIndex

Some refectoring while fixing QTBUG-13687 resulted in the private
setOffset() method being called rather than the public.  The
public version was responsible for updating currentIndex.

Change-Id: Iac9c7a19d6fa64550b9498e77b8983512e199370
Task-number: QTBUG-17319
Reviewed-by: Michael Brasser
(cherry picked from commit eb1db74fb59ecb40d541644ce31ce7ec7b2620d2)

3 files changed, 53 insertions, 1 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativepathview.cpp b/src/declarative/graphicsitems/qdeclarativepathview.cpp
index 64656af..050a9ca 100644
--- a/src/declarative/graphicsitems/qdeclarativepathview.cpp
+++ b/src/declarative/graphicsitems/qdeclarativepathview.cpp
@@ -1152,7 +1152,7 @@ void QDeclarativePathViewPrivate::handleMouseMoveEvent(QGraphicsSceneMouseEvent
         moveReason = QDeclarativePathViewPrivate::Mouse;
         qreal diff = (newPc - startPc)*modelCount*mappedRange;
         if (diff) {
-            setOffset(offset + diff);
+            q->setOffset(offset + diff);
 
             if (diff > modelCount/2)
                 diff -= modelCount;
diff --git a/tests/auto/declarative/qdeclarativepathview/data/dragpath.qml b/tests/auto/declarative/qdeclarativepathview/data/dragpath.qml
new file mode 100644
index 0000000..a361bdc
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativepathview/data/dragpath.qml
@@ -0,0 +1,19 @@
+import QtQuick 1.0
+
+PathView {
+    width: 400
+    height: 200
+    model: 100
+    pathItemCount: 20
+    path: Path {
+        startX: 0; startY: 100
+        PathLine { x: 400; y: 100 }
+    }
+    delegate: Rectangle { height: 100; width: 1; color: PathView.isCurrentItem?"red" : "black" }
+    dragMargin: 100
+    preferredHighlightBegin: 0.5
+    preferredHighlightEnd: 0.5
+    Text {
+        text: "current index: " + parent.currentIndex
+    }
+}
diff --git a/tests/auto/declarative/qdeclarativepathview/tst_qdeclarativepathview.cpp b/tests/auto/declarative/qdeclarativepathview/tst_qdeclarativepathview.cpp
index 23ae907..f39e4b9 100644
--- a/tests/auto/declarative/qdeclarativepathview/tst_qdeclarativepathview.cpp
+++ b/tests/auto/declarative/qdeclarativepathview/tst_qdeclarativepathview.cpp
@@ -89,6 +89,7 @@ private slots:
     void pathUpdate();
     void visualDataModel();
     void undefinedPath();
+    void mouseDrag();
 
 private:
     QDeclarativeView *createView();
@@ -867,6 +868,38 @@ void tst_QDeclarativePathView::undefinedPath()
     delete obj;
 }
 
+void tst_QDeclarativePathView::mouseDrag()
+{
+    QDeclarativeView *canvas = createView();
+    canvas->setSource(QUrl::fromLocalFile(SRCDIR "/data/dragpath.qml"));
+    canvas->show();
+    QApplication::setActiveWindow(canvas);
+    QTest::qWaitForWindowShown(canvas);
+    QTRY_COMPARE(QApplication::activeWindow(), static_cast<QWidget *>(canvas));
+
+    QDeclarativePathView *pathview = qobject_cast<QDeclarativePathView*>(canvas->rootObject());
+    QVERIFY(pathview != 0);
+
+    int current = pathview->currentIndex();
+
+    QTest::mousePress(canvas->viewport(), Qt::LeftButton, 0, canvas->mapFromScene(QPoint(10,100)));
+
+    {
+        QMouseEvent mv(QEvent::MouseMove, canvas->mapFromScene(QPoint(30,100)), Qt::LeftButton, Qt::LeftButton,Qt::NoModifier);
+        QApplication::sendEvent(canvas->viewport(), &mv);
+    }
+    {
+        QMouseEvent mv(QEvent::MouseMove, canvas->mapFromScene(QPoint(90,100)), Qt::LeftButton, Qt::LeftButton,Qt::NoModifier);
+        QApplication::sendEvent(canvas->viewport(), &mv);
+    }
+
+    QVERIFY(pathview->currentIndex() != current);
+
+    QTest::mouseRelease(canvas->viewport(), Qt::LeftButton, 0, canvas->mapFromScene(QPoint(40,100)));
+
+    delete canvas;
+}
+
 QDeclarativeView *tst_QDeclarativePathView::createView()
 {
     QDeclarativeView *canvas = new QDeclarativeView(0);