[orca] Add icon/canvas selection container mapping to layered pane

[Joanmarie Diggs <joanied src gnome org>]

commit 82983b949de06dfd6c4ac2c8a3021b0d02585489
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Mar 31 12:48:51 2021 +0200

    Add icon/canvas selection container mapping to layered pane
    
    This is needed for the read-selection command to work in views that
    are not lists or tables.
    
    Fixes #197.

 src/orca/script_utilities.py | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index ffc1ca570..851cad7c0 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -3919,6 +3919,8 @@ class Utilities:
             return obj
 
         rolemap = {
+            pyatspi.ROLE_CANVAS: [pyatspi.ROLE_LAYERED_PANE],
+            pyatspi.ROLE_ICON: [pyatspi.ROLE_LAYERED_PANE],
             pyatspi.ROLE_LIST_ITEM: [pyatspi.ROLE_LIST_BOX],
             pyatspi.ROLE_TREE_ITEM: [pyatspi.ROLE_TREE, pyatspi.ROLE_TREE_TABLE],
             pyatspi.ROLE_TABLE_CELL: [pyatspi.ROLE_TABLE, pyatspi.ROLE_TREE_TABLE],