tree 29d21e36fb03881dbada4cfd249381c507c8fffb
parent e49a32946f8757692dc9e8d20bca3467d4f13d73
author Robert Carr <racarr@google.com> 1582139673 -0800
committer Rob Carr <racarr@google.com> 1582163977 +0000

WindowContainerTransaction: Provide non-BLAST bounds change sync

This is to enable landing the SysUI driven PiP animation without BLAST. Without
BLAST we can't support multi container sync, multi buffer sync, etc, but we can
support the same sort of synchronization we've supported before. Let's recall how
the old PIP animation works: At the end of the enter animation, or the beginning
of the leave animation, the Surface changes size (When the Windowing mode changes).
We detect this size change deep in the guts of WindowStateAnimator, and when
we detect that we are called from "relayoutWindow" defer a transaction changing
the PIP scaling factors. This approach is we simply allow SysUI to set a pending
Transaction on a task via the WindowContainerTransaction API. The next BASE_APPLICATION
window to resize in this task will consume this transaciton, and defer the transaction
until the frame in which it resizes.

Bug: 139371701
Bug: 139371701
Test: Manual test with pending SysUI branch
Change-Id: I1e757d87e2f276db626de00685b0432508ac6d62