tree 37b83ed4cefa6944a3b4736e655c9024bcafee7e
parent a7836eb3ded16ace0f1fe4a8596184b081daa48b
author Prabir Pradhan <prabirmsp@google.com> 1615326895 -0800
committer Prabir Pradhan <prabirmsp@google.com> 1615333560 -0800

Per-window input rotation: Let InputReader use un-rotated coordinates

InputReader works in the rotated coordinate system that is oriented with
the display's orientation obtained through DisplayViewport.

When per-window input rotation is enabled, we let InputReader work in
the un-rotated coordinate space as if the display's orientation is
always ROTATION_0. Since the input rotation is included in the
per-window transform, the output from InputReader should not be rotated.

This requires two changes in InputReader:

1. When setting an orientation to use for an InputDevice, we do the
opposite of the default behavior: If a device was being rotated before,
we don't rotate it anymore, and vice-versa. We invert the direction of
the rotation so that when the coordinates are rotated by the per-window
transform, they appear as expected.

2. Since PointerController should still use the rotated coordinates, we
need to convert all display coordinates going in/out of
PointerController.

Bug: 179274888
Test: test touch, mouse, and touchpad input in all four orientations
using a test app and the PointerLocationView.

Change-Id: I1eec8ba1d72355564a79cdf1c14c88828124e8a4