Flickable and MouseArea were too eager to take/keep mouse grab.

This meant that they would sometimes act upon a drag immediately,
rather than waiting for a nested area to take the grab.  This resulted
in a short jump before future events were handled by the nested item.

Task-number: QTBUG-15568
Reviewed-by: Bea Lam

1 files changed, 62 insertions, 0 deletions

diff --git a/tests/auto/declarative/qmlvisual/qdeclarativemousearea/nested.qml b/tests/auto/declarative/qmlvisual/qdeclarativemousearea/nested.qml
new file mode 100644
index 0000000..b2d88d2
--- /dev/null
+++ b/tests/auto/declarative/qmlvisual/qdeclarativemousearea/nested.qml
@@ -0,0 +1,62 @@
+import QtQuick 1.0
+
+/*
+  Test nested MouseArea with different drag axes.
+*/
+
+Rectangle{
+    width:400
+    height:360
+    color: "white"
+    Flickable {
+        anchors.fill: parent
+        contentWidth: 600
+        contentHeight: 600
+        Rectangle{
+            id: draggable
+            width:200; height:200; color: "lightsteelblue"
+            opacity: ma1.drag.active ? 0.5 : 1.0
+            y:20
+            MouseArea{
+                id: ma1
+                objectName: "one"
+                anchors.fill: parent
+                drag.target: draggable
+                drag.axis: "XandYAxis"
+                drag.filterChildren: true
+                drag.minimumX: 0
+                drag.maximumX: 200
+                drag.minimumY: 20
+                drag.maximumY: 220
+                Rectangle{
+                    id: draggable_inner
+                    width:40; height:40; color: "red"
+                        y:20
+                    MouseArea{
+                        objectName: "two"
+                        anchors.fill: parent
+                        drag.target: draggable_inner
+                        drag.axis: "XAxis"
+                        drag.minimumX: 0
+                        drag.maximumX: 360
+                    }
+                }
+            }
+        }
+        Rectangle{
+            id: draggable3
+            width:40; height:40; color: "green"
+            opacity: ma3.drag.active ? 0.5 : 1.0
+            y:210
+            MouseArea{
+                id: ma3
+                objectName: "three"
+                anchors.fill: parent
+                drag.target: draggable3
+                drag.axis: "XAxis"
+                drag.minimumX: 0
+                drag.maximumX: 360
+            }
+        }
+    }
+}