Signal-Android/app/src/main/res/layout/tooltip.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:clipChildren="false"
    android:clipToPadding="false"
    android:maxWidth="320dp"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/tooltip_arrow_start"
        android:layout_width="8dp"
        android:layout_height="16dp"
        android:elevation="6dp"
        android:scaleType="fitXY"
        android:visibility="gone"
        app:srcCompat="@drawable/ic_triangle_left"
        tools:tint="@color/core_blue"
        tools:visibility="visible" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clipChildren="false"
        android:clipToPadding="false"
        android:orientation="vertical">

        <ImageView
            android:id="@+id/tooltip_arrow_top"
            android:layout_width="16dp"
            android:layout_height="8dp"
            android:elevation="6dp"
            android:scaleType="fitXY"
            android:visibility="gone"
            app:srcCompat="@drawable/ic_triangle_up"
            tools:tint="@color/core_blue"
            tools:visibility="visible" />

        <LinearLayout
            android:id="@+id/tooltip_bubble"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/tooltip_background"
            android:clipChildren="false"
            android:clipToPadding="false"
            android:elevation="6dp"
            android:gravity="center_vertical"
            android:orientation="horizontal"
            android:padding="16dp">

            <ImageView
                android:id="@+id/tooltip_icon"
                android:layout_width="20dp"
                android:layout_height="20dp"
                android:layout_marginEnd="2dp"
                android:visibility="gone"
                tools:src="@drawable/ic_person_white_24dp"
                tools:tint="@color/core_blue"
                tools:visibility="visible" />

            <TextView
                android:id="@+id/tooltip_text"
                style="@style/Signal.Text.BodyMedium"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                tools:text="It is my gift. It is my curse." />

        </LinearLayout>

        <ImageView
            android:id="@+id/tooltip_arrow_bottom"
            android:layout_width="16dp"
            android:layout_height="8dp"
            android:elevation="6dp"
            android:scaleType="fitXY"
            android:visibility="gone"
            app:srcCompat="@drawable/ic_triangle_down"
            tools:tint="@color/core_blue"
            tools:visibility="visible" />

    </LinearLayout>

    <ImageView
        android:id="@+id/tooltip_arrow_end"
        android:layout_width="8dp"
        android:layout_height="16dp"
        android:elevation="6dp"
        android:scaleType="fitXY"
        android:visibility="gone"
        app:srcCompat="@drawable/ic_triangle_right"
        tools:tint="@color/core_blue"
        tools:visibility="visible" />

</LinearLayout>