SPT-AKI-Installer/SPTInstaller/CustomControls/StatusSpinner.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"
             xmlns:convt="using:SPTInstaller.Converters"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="SPTInstaller.CustomControls.StatusSpinner">

    <UserControl.Resources>
        <convt:StatusSpinnerIsStateConverter x:Key="IsStateConverter" />
        <convt:StatusSpinnerIsProcessingConverter x:Key="IsInProcessingStateConverter" />
    </UserControl.Resources>
    <UserControl.Styles>
        <Style Selector="Arc.running">
            <Setter Property="Stroke" Value="DodgerBlue" />
        </Style>

        <Style Selector="Path.ok">
            <Setter Property="Data" Value="{StaticResource CircledCheck}" />
            <Setter Property="Fill" Value="Green" />
        </Style>

        <Style Selector="Path.warning">
            <Setter Property="Data" Value="{StaticResource CircledWarn}" />
            <Setter Property="Fill" Value="Goldenrod" />
        </Style>

        <Style Selector="Path.error">
            <Setter Property="Data" Value="{StaticResource CircledX}" />
            <Setter Property="Fill" Value="Red" />
        </Style>

        <Style Selector="Arc">
            <Setter Property="Stroke" Value="Gray" />
            <Setter Property="IsVisible"
                    Value="{Binding State, RelativeSource={RelativeSource AncestorType=UserControl},
                                         Converter={StaticResource ResourceKey=IsInProcessingStateConverter}}" />
            <Style.Animations>
                <Animation Duration="0:0:1" IterationCount="Infinite">
                    <KeyFrame Cue="0%">
                        <Setter Property="RotateTransform.Angle" Value="0" />
                    </KeyFrame>
                    <KeyFrame Cue="100%">
                        <Setter Property="RotateTransform.Angle" Value="360" />
                    </KeyFrame>
                </Animation>
            </Style.Animations>
        </Style>
    </UserControl.Styles>

    <Grid>
        <Canvas Margin="0 3 0 0" Height="20" Width="20"
                IsVisible="{Binding State, RelativeSource={RelativeSource AncestorType=UserControl},
                             Converter={StaticResource ResourceKey=IsInProcessingStateConverter}, ConverterParameter=invert}">
            <Ellipse Fill="White" Height="15" Width="15" Canvas.Top="3" Canvas.Left="3" />
            <Path StrokeThickness="2"
                  Classes.ok="{Binding State, RelativeSource={RelativeSource AncestorType=UserControl},
                              Converter={StaticResource ResourceKey=IsStateConverter},
                              ConverterParameter=OK}"
                  Classes.warning="{Binding State, RelativeSource={RelativeSource AncestorType=UserControl},
                              Converter={StaticResource ResourceKey=IsStateConverter},
                              ConverterParameter=Warning}"
                  Classes.error="{Binding State, RelativeSource={RelativeSource AncestorType=UserControl},
                              Converter={StaticResource ResourceKey=IsStateConverter},
                              ConverterParameter=Error}" />
        </Canvas>

        <Arc StartAngle="280" SweepAngle="80" Margin="0 3 0 0" StrokeThickness="3"
             Width="20" Height="20" VerticalAlignment="Top"
             Classes.running="{Binding State, RelativeSource={RelativeSource AncestorType=UserControl},
                              Converter={StaticResource ResourceKey=IsStateConverter},
                              ConverterParameter=Running}" />
    </Grid>
</UserControl>