Use correct trait type for mouse pointers (#911)

* Use correct trait type for mouse pointers.

Fixes #885

* Add a basic

* Add a basic test for the pointer shape traits.

enable/drawing/point_line.py

@@ -9,9 +9,9 @@
 # Thanks for using Enthought open source!
 """ A point-to-point drawn polygon. """
 
-from enable.api import cursor_style_trait, Line
 from traits.api import Event, Int, Instance
 
+from enable.api import Line, Pointer
 from .drawing_tool import DrawingTool
 
 
@@ -29,10 +29,10 @@ class PointLine(DrawingTool):
     proximity_distance = Int(4)
 
     # The cursor shapes to use for various modes
-    normal_cursor = cursor_style_trait("arrow")
-    drawing_cursor = cursor_style_trait("pencil")
-    delete_cursor = cursor_style_trait("bullseye")
-    move_cursor = cursor_style_trait("sizing")
+    normal_cursor = Pointer("arrow")
+    drawing_cursor = Pointer("pencil")
+    delete_cursor = Pointer("bullseye")
+    move_cursor = Pointer("sizing")
 
     # The index of the vertex being dragged, if any.
     _dragged = Int

enable/tests/drawing/test_point_line.py

@@ -0,0 +1,24 @@
+# (C) Copyright 2005-2021 Enthought, Inc., Austin, TX
+# All rights reserved.
+#
+# This software is provided without warranty under the terms of the BSD
+# license included in LICENSE.txt and may be redistributed only under
+# the conditions described in the aforementioned license. The license
+# is also available online at http://www.enthought.com/licenses/BSD.txt
+#
+# Thanks for using Enthought open source!
+
+import unittest
+
+from enable.drawing.point_line import PointLine
+
+
+class TestPointLine(unittest.TestCase):
+
+    def test_pointer_shapes(self):
+        point_line = PointLine()
+
+        self.assertEqual(point_line.normal_cursor, "arrow")
+        self.assertEqual(point_line.drawing_cursor, "pencil")
+        self.assertEqual(point_line.delete_cursor, "bullseye")
+        self.assertEqual(point_line.move_cursor, "sizing")