lawnchair/res/drawable/bg_widgets_header_two_pane_expanded_focused.xml

<?xml version="1.0" encoding="utf-8"?><!--
  ~ Copyright (C) 2024 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.
  -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- Draw the focus ring -->
    <item>
        <shape>
            <corners android:radius="@dimen/widget_focus_ring_corner_radius" />
            <stroke
                android:width="@dimen/widget_header_focus_ring_width"
                android:color="?attr/widgetPickerTabBackgroundSelected" />
        </shape>
    </item>

    <!-- Draw the background with padding to make it spaced within the focus ring. -->
    <item
        android:bottom="@dimen/widget_header_background_border"
        android:end="@dimen/widget_header_background_border"
        android:start="@dimen/widget_header_background_border"
        android:top="@dimen/widget_header_background_border">
        <shape android:shape="rectangle">
            <corners android:radius="@dimen/widget_list_top_bottom_corner_radius" />
            <solid android:color="?attr/widgetPickerHeaderBackgroundColor" />
        </shape>
    </item>
</layer-list>