lawnchair/quickstep/res/layout/bubble_expanded_view_drop_target.xml

<?xml version="1.0" encoding="utf-8"?><!--
  ~ Copyright (C) 2024 The Android Open Source Project
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  ~ 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
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  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
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<!-- TODO(b/330585402): replace 600dp height with calculated value -->
<View xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="@dimen/bubble_expanded_view_drop_target_default_width"
    android:layout_height="@dimen/bubble_expanded_view_drop_target_default_height"
    android:layout_margin="@dimen/bubble_expanded_view_drop_target_margin"
    android:background="@drawable/bg_bubble_expanded_view_drop_target"
    android:elevation="@dimen/bubblebar_elevation" />