Make SpringAnimation usable inside a transition

SpringFollow was turned into SpringAnimation so it could be
used inside a Behavior. This patch completes the work and makes
it usable inside a transition.

This is the documented behavior of SpringAnimation, the patch
is essential to make SpringAnimation work consistently.

Reviewed-by: Michael Brasser
Task-number: QTBUG-12141
(cherry picked from commit 33203efb786de9aebc6e05d1b4878d89e86ac456)

2 files changed, 43 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativeanimations/data/propertiesTransition7.qml b/tests/auto/declarative/qdeclarativeanimations/data/propertiesTransition7.qml
new file mode 100644
index 0000000..b47b5f2
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativeanimations/data/propertiesTransition7.qml
@@ -0,0 +1,29 @@
+import Qt 4.7
+
+Rectangle {
+    width: 400
+    height: 400
+    Rectangle {
+        id: theRect
+        objectName: "TheRect"
+        color: "red"
+        width: 50; height: 50
+        x: 100; y: 100
+    }
+
+    states: State {
+        name: "moved"
+        PropertyChanges {
+            target: theRect
+            x: 200
+        }
+    }
+    transitions: Transition {
+        SpringAnimation { targets: theRect; properties: "x"; velocity: 10000 }
+    }
+
+    MouseArea {
+        anchors.fill: parent
+        onClicked: parent.state = "moved"
+    }
+}
diff --git a/tests/auto/declarative/qdeclarativeanimations/tst_qdeclarativeanimations.cpp b/tests/auto/declarative/qdeclarativeanimations/tst_qdeclarativeanimations.cpp
index 3e80c2c..ec867fe 100644
--- a/tests/auto/declarative/qdeclarativeanimations/tst_qdeclarativeanimations.cpp
+++ b/tests/auto/declarative/qdeclarativeanimations/tst_qdeclarativeanimations.cpp
@@ -551,6 +551,20 @@ void tst_qdeclarativeanimations::propertiesTransition()
         QTest::qWait(waitDuration);
         QTIMED_COMPARE(myRect->x(),qreal(100));
     }*/
+
+    {
+        QDeclarativeEngine engine;
+        QDeclarativeComponent c(&engine, QUrl::fromLocalFile(SRCDIR "/data/propertiesTransition7.qml"));
+        QDeclarativeRectangle *rect = qobject_cast<QDeclarativeRectangle*>(c.create());
+        QVERIFY(rect);
+
+        QDeclarativeItemPrivate::get(rect)->setState("moved");
+        QDeclarativeRectangle *myRect = rect->findChild<QDeclarativeRectangle*>("TheRect");
+        QVERIFY(myRect);
+        QTest::qWait(waitDuration);
+        QTIMED_COMPARE(myRect->x(),qreal(200));
+    }
+
 }
 
 void tst_qdeclarativeanimations::invalidDuration()