tree 74ebc37aab4cccd2860f01c42d3a521ee7523010
parent 281182739aa3c24eae93a5bc15f389fe720590b0
author Brian Isganitis <brianji@google.com> 1645757879 -0800
committer Brian Isganitis <brianji@google.com> 1646249507 -0800

Ignore touches in taskbar and all apps windows during system drag.

Touches are ignored as soon as we want to start system drag so that system drag can start sooner (i.e. before any AbstractFloatingView animations finish). This approach utilizes ViewTreeObserverWrapper's compute insets listener by temporarily setting the touch region to empty. The taskbar window remains fullscreen until the drag finishes so the touch region is reset at the right point. Similarly, the all apps window is kept open during its drag operations until the drag finishes. System drag state is now exposed through the drag controller to skip predrag.

Test: Manual by dragging to split screen and triggering dismissal
animation from both windows. Verified predrag works.
Fix: 221104066
Fix: 220070070

Change-Id: I424106269c841f58cbe5338d30b6c33fbd889019