packages/SystemUI/res/layout-land/global_actions_column_seascape.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2019 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
  -->

<com.android.systemui.globalactions.GlobalActionsColumnLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@id/global_actions_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:clipToPadding="false"
    android:theme="@style/Theme.SystemUI.QuickSettings"
    android:gravity="center_horizontal | bottom"
    android:clipChildren="false"
>
    <LinearLayout
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:padding="0dp"
        android:orientation="horizontal"
    >
        <!-- Grid of action items -->
        <com.android.systemui.globalactions.ListGridLayout
            android:id="@android:id/list"
            android:layout_gravity="bottom|left"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:layout_marginBottom="@dimen/global_actions_grid_side_margin"
            android:translationZ="@dimen/global_actions_translate"
            android:paddingLeft="@dimen/global_actions_grid_vertical_padding"
            android:paddingRight="@dimen/global_actions_grid_vertical_padding"
            android:paddingTop="@dimen/global_actions_grid_horizontal_padding"
            android:paddingBottom="@dimen/global_actions_grid_horizontal_padding"
            android:background="?android:attr/colorBackgroundFloating"
        />
        <!-- For separated items-->
        <LinearLayout
            android:id="@+id/separated_button"
            android:layout_gravity="top|left"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="@dimen/global_actions_grid_side_margin"
            android:layout_marginBottom="@dimen/global_actions_grid_side_margin"
            android:paddingLeft="@dimen/global_actions_grid_vertical_padding"
            android:paddingRight="@dimen/global_actions_grid_vertical_padding"
            android:paddingTop="@dimen/global_actions_grid_horizontal_padding"
            android:paddingBottom="@dimen/global_actions_grid_horizontal_padding"
            android:orientation="horizontal"
            android:background="?android:attr/colorBackgroundFloating"
            android:translationZ="@dimen/global_actions_translate"
        />
    </LinearLayout>

</com.android.systemui.globalactions.GlobalActionsColumnLayout>