[orca] Mouse Review: See if the pointer moved before looking for descendants

[Joanmarie Diggs <joanied src gnome org>]

commit a3b20a39c4a90c31a664caa2ab8b94d98afc8997
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Mon Oct 28 11:02:17 2019 -0400

    Mouse Review: See if the pointer moved before looking for descendants

 src/orca/mouse_review.py | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/src/orca/mouse_review.py b/src/orca/mouse_review.py
index 943d9a209..6787a1ed0 100644
--- a/src/orca/mouse_review.py
+++ b/src/orca/mouse_review.py
@@ -494,6 +494,12 @@ class MouseReviewer:
         if script.utilities.inDocumentContent():
             document = script.utilities.activeDocument()
 
+        screen, nowX, nowY = self._pointer.get_position()
+        if (pX, pY) != (nowX, nowY):
+            msg = "MOUSE REVIEW: Pointer moved again: (%i, %i)" % (nowX, nowY)
+            debug.println(debug.LEVEL_INFO, msg, True)
+            return
+
         obj = script.utilities.descendantAtPoint(menu, pX, pY) \
             or script.utilities.descendantAtPoint(document, pX, pY) \
             or script.utilities.descendantAtPoint(window, pX, pY)