FairEmail/app/src/main/res/layout/dialog_markdown.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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="match_parent"
    android:layout_height="wrap_content"
    tools:context="eu.faircode.email.ActivityView">

    <eu.faircode.email.ScrollViewEx
        android:id="@+id/scroll"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:minHeight="120dp"
        android:orientation="vertical"
        android:padding="24dp"
        android:scrollbarStyle="outsideOverlay"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <TextView
                android:id="@+id/tvMarkdown"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:text="Markdown"
                android:textAppearance="@style/TextAppearance.AppCompat.Small"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />
        </androidx.constraintlayout.widget.ConstraintLayout>
    </eu.faircode.email.ScrollViewEx>

    <ImageButton
        android:id="@+id/ibCancel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="?android:attr/selectableItemBackgroundBorderless"
        android:contentDescription="@android:string/no"
        android:padding="12dp"
        android:tooltipText="@android:string/no"
        app:layout_constraintEnd_toEndOf="@+id/scroll"
        app:layout_constraintTop_toTopOf="@+id/scroll"
        app:srcCompat="@drawable/twotone_close_24" />

    <eu.faircode.email.ContentLoadingProgressBar
        android:id="@+id/pbWait"
        style="@style/Base.Widget.AppCompat.ProgressBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:indeterminate="true"
        android:padding="24dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <androidx.constraintlayout.widget.Group
        android:id="@+id/grpReady"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:constraint_referenced_ids="scroll,ibCancel" />
</androidx.constraintlayout.widget.ConstraintLayout>