[orca] Be more aggressive finding candidate descendants at point

[Joanmarie Diggs <joanied src gnome org>]

commit 5467f73be38a62e41898bfb4695a3fedf8a8f940
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sat Jun 30 18:01:47 2018 -0400

    Be more aggressive finding candidate descendants at point

 src/orca/script_utilities.py | 10 ++++++++++
 1 file changed, 10 insertions(+)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 084254e77..fff79b99a 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -3959,10 +3959,20 @@ class Utilities:
                         return cell
                     return child
 
+        candidates = []
         for child in root:
             obj = self.descendantAtPoint(child, x, y, coordType)
             if obj:
                 return obj
+            if not self.containsPoint(child, x, y, coordType):
+                continue
+            if self.queryNonEmptyText(child):
+                string = child.queryText().getText(0, -1)
+                if re.search("[^\ufffc\s]", string):
+                    candidates.append(child)
+
+        if len(candidates) == 1:
+            return candidates[0]
 
         return None