[سؤال] كيف يمكن عمل شريط تقدم مثل هذا

PHP كود :

<Window.Resources>
        <ControlTemplate x:Key="ProgressBarControlTemplate1" TargetType="{x:Type ProgressBar}">
            <ControlTemplate.Resources>
                <Storyboard x:Key="OnLoaded1" RepeatBehavior="Forever">
                    <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).
(TransformGroup.Children)[2].(RotateTransform.Angle)" Storyboard.TargetName="ellipse">
                        <EasingDoubleKeyFrame KeyTime="0" Value="-180"/>
                        <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="180"/>
                    </DoubleAnimationUsingKeyFrames>
                </Storyboard>
            </ControlTemplate.Resources>
            <Grid>
                <Ellipse x:Name="ellipse" Height="Auto" Margin="0" VerticalAlignment="Stretch" Width="Auto" 
RenderTransformOrigin="0.5,0.5" >
                    <Ellipse.RenderTransform>
                        <TransformGroup>
                            <ScaleTransform/>
                            <SkewTransform/>
                            <RotateTransform Angle="-90"/>
                            <TranslateTransform/>
                        </TransformGroup>
                    </Ellipse.RenderTransform>
                    <Ellipse.Stroke>
                        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                            <GradientStop Color="#FF8878F0" Offset="0"/>
                            <GradientStop Color="#FFE9E8EA" Offset="0.992"/>
                            <GradientStop Color="#FFE9E8EA" Offset="0.356"/>
                        </LinearGradientBrush>
                    </Ellipse.Stroke>
                </Ellipse>
            </Grid>
            <ControlTemplate.Triggers>
                <EventTrigger RoutedEvent="FrameworkElement.Loaded">
                    <BeginStoryboard Storyboard="{StaticResource OnLoaded1}"/>
                </EventTrigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>
 </Window.Resources> 