Ensure PathView updates positions when path changes.

Fixes regression caused by optimization added in commit
35a51442ed21f58c06b21293eeb56e843251ee82.

Task-number: QTBUG-14239
Reviewed-by: Martin Jones

4 files changed, 52 insertions, 2 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativepathview.cpp b/src/declarative/graphicsitems/qdeclarativepathview.cpp
index d13492999c..3ae87881c8 100644
--- a/src/declarative/graphicsitems/qdeclarativepathview.cpp
+++ b/src/declarative/graphicsitems/qdeclarativepathview.cpp
@@ -300,6 +300,19 @@ void QDeclarativePathViewPrivate::setHighlightPosition(qreal pos)
     }
 }
 
+void QDeclarativePathView::pathUpdated()
+{
+    Q_D(QDeclarativePathView);
+    QList<QDeclarativeItem*>::iterator it = d->items.begin();
+    while (it != d->items.end()) {
+        QDeclarativeItem *item = *it;
+        if (QDeclarativePathViewAttached *att = d->attached(item))
+            att->m_percent = -1;
+        ++it;
+    }
+    refill();
+}
+
 void QDeclarativePathViewPrivate::updateItem(QDeclarativeItem *item, qreal percent)
 {
     if (QDeclarativePathViewAttached *att = attached(item)) {
@@ -526,9 +539,9 @@ void QDeclarativePathView::setPath(QDeclarativePath *path)
     if (d->path == path)
         return;
     if (d->path)
-        disconnect(d->path, SIGNAL(changed()), this, SLOT(refill()));
+        disconnect(d->path, SIGNAL(changed()), this, SLOT(pathUpdated()));
     d->path = path;
-    connect(d->path, SIGNAL(changed()), this, SLOT(refill()));
+    connect(d->path, SIGNAL(changed()), this, SLOT(pathUpdated()));
     if (d->isValid() && isComponentComplete()) {
         d->clear();
         if (d->attType) {
diff --git a/src/declarative/graphicsitems/qdeclarativepathview_p.h b/src/declarative/graphicsitems/qdeclarativepathview_p.h
index 62a8c44020..7775b1cdab 100644
--- a/src/declarative/graphicsitems/qdeclarativepathview_p.h
+++ b/src/declarative/graphicsitems/qdeclarativepathview_p.h
@@ -186,6 +186,7 @@ private Q_SLOTS:
     void modelReset();
     void createdItem(int index, QDeclarativeItem *item);
     void destroyingItem(QDeclarativeItem *item);
+    void pathUpdated();
 
 private:
     friend class QDeclarativePathViewAttached;
diff --git a/tests/auto/declarative/qdeclarativepathview/data/pathUpdate.qml b/tests/auto/declarative/qdeclarativepathview/data/pathUpdate.qml
new file mode 100644
index 0000000000..0c99e7f975
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativepathview/data/pathUpdate.qml
@@ -0,0 +1,18 @@
+import Qt 4.7
+
+Rectangle {
+   width: 400
+   height: 400
+
+   PathView {
+       id: view
+       objectName: "pathView"
+       anchors.fill: parent
+       model: 10
+       delegate: Rectangle { objectName: "wrapper"; color: "green"; width: 100; height: 100 }
+       path: Path {
+           startX: view.width/2; startY: 0
+           PathLine { x: view.width/2; y: view.height }
+       }
+   }
+}
diff --git a/tests/auto/declarative/qdeclarativepathview/tst_qdeclarativepathview.cpp b/tests/auto/declarative/qdeclarativepathview/tst_qdeclarativepathview.cpp
index 3b5d4386b3..eb4bdbba87 100644
--- a/tests/auto/declarative/qdeclarativepathview/tst_qdeclarativepathview.cpp
+++ b/tests/auto/declarative/qdeclarativepathview/tst_qdeclarativepathview.cpp
@@ -85,6 +85,7 @@ private slots:
     void pathUpdateOnStartChanged();
     void package();
     void emptyModel();
+    void pathUpdate();
 
 private:
     QDeclarativeView *createView();
@@ -787,6 +788,23 @@ void tst_QDeclarativePathView::emptyModel()
 }
 
 
+// QTBUG-14239
+void tst_QDeclarativePathView::pathUpdate()
+{
+    QDeclarativeView *canvas = createView();
+    QVERIFY(canvas);
+    canvas->setSource(QUrl::fromLocalFile(SRCDIR "/data/pathUpdate.qml"));
+
+    QDeclarativePathView *pathView = canvas->rootObject()->findChild<QDeclarativePathView*>("pathView");
+    QVERIFY(pathView);
+
+    QDeclarativeItem *item = findItem<QDeclarativeItem>(pathView, "wrapper", 0);
+    QVERIFY(item);
+    QCOMPARE(item->x(), 150.0);
+
+    delete canvas;
+}
+
 QDeclarativeView *tst_QDeclarativePathView::createView()
 {
     QDeclarativeView *canvas = new QDeclarativeView(0);