commit 8ccd7eb5388272d817f65c248619ea94413948dc
author Matt Casey <mrcasey@google.com> Wed Apr 07 12:21:21 2021 -0400
committer Matt Casey <mrcasey@google.com> Thu Apr 08 12:57:18 2021 -0400
tree f3e376f3d8a627505a6bbdbc4cbc4d4bf0e49b14
parent 54c39c71a97bd52002a38f4a1e7ccd88813d8f60

TalkBack and switch access support for CropView

- Switch to androidx ExploreByTouchHelper, add View pass-through calls.
- Add virtual view IDs for left/right bounds as well.
- Make content description describe the position (as a %)
- Allow volume buttons to move the current boundary along its axis
  (matching pattern used in Photos)
- Remove unused click action for boundaries (was breaking switch access)

Bug: 184018281
Bug: 184012364
Bug: 180062481
Bug: 184105678

Test: Enable talkback, move crop bounds with volume keys, same with
      switch access
Change-Id: I06bab02a37620f19e15cddcfc79ae858a1614e92