MouseArea: use current value of drag.axis

If the drag.axis is changed while a drag operation is in progress, put
it into action immediately. This allows, for example, start a dragging
operation out of an item in a scrollable ListView to anywhere on the
screen.
See the linked bug number for an example.

Task-number: QTBUG-26440
Change-Id: Id4219d44d1066dd962319086ac1f2a2a75bb2525
Reviewed-by: Damian Jansen <damian.jansen@nokia.com>
Reviewed-by: Martin Jones <martin.jones@nokia.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/auto/quick/qquickmousearea/data/changeAxis.qml b/tests/auto/quick/qquickmousearea/data/changeAxis.qml
new file mode 100644
index 0000000000..cf791df31d
--- /dev/null
+++ b/tests/auto/quick/qquickmousearea/data/changeAxis.qml
@@ -0,0 +1,22 @@
+import QtQuick 2.0
+Rectangle {
+    id: whiteRect
+    width: 200
+    height: 200
+    color: "white"
+    Rectangle {
+        id: blackRect
+        objectName: "blackrect"
+        color: "black"
+        y: 50
+        x: 50
+        width: 100
+        height: 100
+        MouseArea {
+            objectName: "mouseregion"
+            anchors.fill: parent
+            drag.target: blackRect
+            drag.axis: blackRect.x <= 75 ? Drag.XandYAxis : Drag.YAxis
+         }
+     }
+ }