inabox/InABox.Avalonia/Components/CalendarView/CalendarView.axaml

<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"
             x:Class="InABox.Avalonia.Components.CalendarView"
             Name="Calendar">
    <Grid ColumnDefinitions="Auto,*"
          RowDefinitions="Auto,*">
        <Border Grid.Column="0" Grid.Row="0"
                BorderBrush="LightGray" BorderThickness="0,0,1,0"
                IsVisible="{Binding ShowColumns, ElementName=Calendar}">
            
        </Border>
        <Border Grid.Column="0" Grid.Row="1"
                BorderBrush="LightGray" BorderThickness="0,0,1,0">
            <ScrollViewer Name="LabelScroll" VerticalScrollBarVisibility="Hidden">
                <Canvas Name="LabelCanvas" Margin="2,0"/>
            </ScrollViewer>
        </Border>
        <Border Grid.Column="1" Grid.Row="0"
                BorderBrush="LightGray" BorderThickness="0,0,0,1"
                IsVisible="{Binding ShowColumns, ElementName=Calendar}">
            <ScrollViewer Name="HeaderScroll" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Disabled">
                <Canvas Name="HeaderCanvas"/>
            </ScrollViewer>
        </Border>
        <ScrollViewer Name="ScrollViewer"
                      Grid.Row="1" Grid.Column="1"
                      HorizontalScrollBarVisibility="Auto" SizeChanged="Scroll_SizeChanged">
            <Canvas Name="Canvas"
                    Background="Transparent"
                    PointerPressed="Canvas_PointerPressed"
                    PointerReleased="Canvas_PointerReleased"/>
        </ScrollViewer>
    </Grid>
</UserControl>