Avalonia/samples/RenderDemo/Pages/LineBoundsPage.xaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             xmlns:controls="using:RenderDemo.Controls"
             x:Class="RenderDemo.Pages.LineBoundsPage">
  <controls:LineBoundsDemoControl />
</UserControl>