res/drawable/set_wallpaper_dialog_outlined_button.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2023 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.
  -->
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="?android:colorControlHighlight">

    <item android:id="@android:id/mask">
        <shape android:shape="rectangle">
            <corners android:radius="@dimen/set_wallpaper_button_corner_radius" />
            <padding
                android:left="@dimen/set_wallpaper_button_horizontal_padding"
                android:top="@dimen/set_wallpaper_button_vertical_padding"
                android:right="@dimen/set_wallpaper_button_horizontal_padding"
                android:bottom="@dimen/set_wallpaper_button_vertical_padding" />
            <solid android:color="?android:colorControlHighlight" />
        </shape>
    </item>
    <item>
        <shape
            android:shape="rectangle">
            <corners android:radius="@dimen/set_wallpaper_button_corner_radius" />
            <solid android:color="@android:color/transparent"/>
            <stroke
                android:color="@color/system_primary"
                android:width="1dp" />
            <padding
                android:left="@dimen/set_wallpaper_button_horizontal_padding"
                android:top="@dimen/set_wallpaper_button_vertical_padding"
                android:right="@dimen/set_wallpaper_button_horizontal_padding"
                android:bottom="@dimen/set_wallpaper_button_vertical_padding" />
        </shape>
    </item>
</ripple>