Artemis/src/Artemis.UI/Screens/Module/ProfileEditor/Visualization/Tools/EllipseToolView.xaml

<UserControl x:Class="Artemis.UI.Screens.Module.ProfileEditor.Visualization.Tools.EllipseToolView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:local="clr-namespace:Artemis.UI.Screens.Module.ProfileEditor.Visualization.Tools"
             xmlns:s="https://github.com/canton7/Stylet"
             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
             mc:Ignorable="d"
             d:DesignHeight="450" d:DesignWidth="800">
    <UserControl.Resources>
        <Style TargetType="Shape" x:Key="ShowIfMouseDown">
            <Style.Triggers>
                <DataTrigger Binding="{Binding IsMouseDown}" Value="True">
                    <DataTrigger.EnterActions>
                        <BeginStoryboard>
                            <Storyboard TargetProperty="Opacity">
                                <DoubleAnimation From="0" To="1" Duration="0:0:0.1" />
                            </Storyboard>
                        </BeginStoryboard>
                    </DataTrigger.EnterActions>
                    <DataTrigger.ExitActions>
                        <BeginStoryboard>
                            <Storyboard TargetProperty="Opacity">
                                <DoubleAnimation From="1" To="0" Duration="0:0:0.2" />
                            </Storyboard>
                        </BeginStoryboard>
                    </DataTrigger.ExitActions>
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </UserControl.Resources>
    <Canvas Background="Transparent" Width="50" Height="50">

        <Canvas.ContextMenu>
            <ContextMenu>
                <MenuItem Header="Ellipse action 1" Command="{s:Action CreateLayer}" CommandParameter="{Binding}">
                    <MenuItem.Icon>
                        <materialDesign:PackIcon Kind="LayersPlus" />
                    </MenuItem.Icon>
                </MenuItem>
                <MenuItem Header="Ellipse action 2" Command="{s:Action ApplyToLayer}" CommandParameter="{Binding}">
                    <MenuItem.Icon>
                        <materialDesign:PackIcon Kind="Selection" />
                    </MenuItem.Icon>
                </MenuItem>
            </ContextMenu>
        </Canvas.ContextMenu>
        <Ellipse Style="{StaticResource ShowIfMouseDown}"
                 Width="{Binding DragRectangle.Width}"
                 Height="{Binding DragRectangle.Height}"
                 Canvas.Left="{Binding DragRectangle.X}"
                 Canvas.Top="{Binding DragRectangle.Y}"
                 Stroke="{DynamicResource PrimaryHueLightBrush}"
                 StrokeThickness="1"
                 Opacity="0">
            <Ellipse.Fill>
                <SolidColorBrush Color="{DynamicResource Primary400}" Opacity="0.25" />
            </Ellipse.Fill>
        </Ellipse>
    </Canvas>
</UserControl>