packages/SystemUI/res-keyguard/layout/footer_actions.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
** Copyright 2022, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
-->

<!-- Action buttons for footer in QS/QQS, containing settings button, power off button etc -->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="@dimen/footer_actions_height"
    android:elevation="@dimen/qs_panel_elevation"
    android:paddingTop="@dimen/qs_footer_actions_top_padding"
    android:paddingBottom="@dimen/qs_footer_actions_bottom_padding"
    android:background="@drawable/qs_footer_actions_background"
    android:gravity="center_vertical|end"
    android:layout_gravity="bottom"
/>