lawnchair/wmshell/res/layout/tv_pip_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
    Copyright (C) 2020 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.
-->
<!-- Layout for TvPipMenuView -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:id="@+id/tv_pip_menu"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="center|top">

    <!-- Matches the PiP app content -->
    <FrameLayout
        android:id="@+id/tv_pip"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginTop="@dimen/pip_menu_outer_space"
        android:layout_marginStart="@dimen/pip_menu_outer_space"
        android:layout_marginEnd="@dimen/pip_menu_outer_space">

        <View
            android:id="@+id/tv_pip_menu_background"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/tv_pip_menu_background"
            android:alpha="0"/>

        <View
            android:id="@+id/tv_pip_menu_dim_layer"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/tv_pip_menu_dim_layer"
            android:alpha="0"/>

        <com.android.internal.widget.RecyclerView
            android:id="@+id/tv_pip_menu_action_buttons"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:clipToPadding="false"
            android:alpha="0"
            android:contentDescription="@string/a11y_pip_menu_entered"/>
    </FrameLayout>

    <!-- Frame around the content, just overlapping the corners to make them round -->
    <View
        android:id="@+id/tv_pip_border"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginTop="@dimen/pip_menu_outer_space_frame"
        android:layout_marginStart="@dimen/pip_menu_outer_space_frame"
        android:layout_marginEnd="@dimen/pip_menu_outer_space_frame"
        android:background="@drawable/tv_pip_menu_border"/>

    <!-- Temporarily extending the background to show an edu text hint for opening the menu -->
    <FrameLayout
        android:id="@+id/tv_pip_menu_edu_text_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/tv_pip"
        android:layout_alignBottom="@+id/tv_pip_menu_frame"
        android:layout_alignStart="@+id/tv_pip"
        android:layout_alignEnd="@+id/tv_pip"
        android:background="@color/tv_pip_menu_background"
        android:paddingBottom="@dimen/pip_menu_border_width"
        android:paddingTop="@dimen/pip_menu_border_width"/>

    <!-- Frame around the PiP content + edu text hint - used to highlight open menu -->
    <View
        android:id="@+id/tv_pip_menu_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="@dimen/pip_menu_outer_space_frame"
        android:background="@drawable/tv_pip_menu_border"/>

    <!-- Move menu -->
    <com.android.wm.shell.common.TvWindowMenuActionButton
        android:id="@+id/tv_pip_menu_done_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:src="@drawable/pip_ic_close_white"
        android:visibility="gone"
        android:text="@string/a11y_action_pip_move_done" />

    <ImageView
        android:id="@+id/tv_pip_menu_arrow_up"
        android:layout_width="@dimen/pip_menu_arrow_size"
        android:layout_height="@dimen/pip_menu_arrow_size"
        android:layout_centerHorizontal="true"
        android:layout_alignParentTop="true"
        android:alpha="0"
        android:contentDescription="@string/a11y_action_pip_move_up"/>

    <ImageView
        android:id="@+id/tv_pip_menu_arrow_right"
        android:layout_width="@dimen/pip_menu_arrow_size"
        android:layout_height="@dimen/pip_menu_arrow_size"
        android:layout_centerVertical="true"
        android:layout_alignParentRight="true"
        android:alpha="0"
        android:contentDescription="@string/a11y_action_pip_move_right"/>

    <ImageView
        android:id="@+id/tv_pip_menu_arrow_down"
        android:layout_width="@dimen/pip_menu_arrow_size"
        android:layout_height="@dimen/pip_menu_arrow_size"
        android:layout_centerHorizontal="true"
        android:layout_alignParentBottom="true"
        android:alpha="0"
        android:contentDescription="@string/a11y_action_pip_move_down"/>

    <ImageView
        android:id="@+id/tv_pip_menu_arrow_left"
        android:layout_width="@dimen/pip_menu_arrow_size"
        android:layout_height="@dimen/pip_menu_arrow_size"
        android:layout_centerVertical="true"
        android:layout_alignParentLeft="true"
        android:alpha="0"
        android:contentDescription="@string/a11y_action_pip_move_left"/>
</RelativeLayout>