commit 9a951ba73e71b9a5624f242f2d06db0edcdceb1c
author Masayuki Fujita <massan@google.com> Mon Sep 04 01:25:40 2023
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Mon Sep 04 01:25:40 2023
tree 1304f91b2c07cea741b7396a4d1f1f97cdd1ce0e
parent 2cf658602019084d84f76ae21f26371fb4536ffa

pip-pinch: Reuse component value during gesture transitions

This commit makes sure that the `window_component` is set properly with
gesture transitions when the first gesture is started by the client.
The pinch-to-resize feature handles gesture transitions (i.e. drag to
pinch and vice versa).  The same `window_component` should be used from
when the first finger touches the screen to when the last finger leaves
the screen. Usually when a gesture is started by the client, the client
specifies the window_component to be used for the rest of the gesture.
However, when a gesture is not initiated but instead is transitioned
from another, new gestures were initiated by `ToplevelWindowHandler`
using the incorrect `window_component`.

To fix this, `ToplevelWindowEventHandler` now keeps track of the first
gesture’s `window_component` and it’s now reused until all of the
gestures end.

Bug: b/295972987
Change-Id: I1913bf3dad90ba1801b4c97120e7db65571673e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4824529
Reviewed-by: Kazuki Takise <takise@chromium.org>
Reviewed-by: Sammie Quon <sammiequon@chromium.org>
Auto-Submit: Masa Fujita <massan@google.com>
Commit-Queue: Masa Fujita <massan@google.com>
Cr-Commit-Position: refs/heads/main@{#1191894}