better-genshin-impact/Build/MicaSetup/Design/Controls/ProgressBar/ProgressBar.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:design="clr-namespace:MicaSetup.Design"
    xmlns:local="clr-namespace:MicaSetup.Design.Controls">
    <ResourceDictionary.MergedDictionaries>
        <design:ResourceResourceDictionary />
    </ResourceDictionary.MergedDictionaries>
    <Color x:Key="ProgressBarForeground1">#73EBF3</Color>
    <Color x:Key="ProgressBarForeground2">#238EFA</Color>
    <Style
        x:Key="DefaultProgressBarStyle"
        BasedOn="{StaticResource {x:Type ProgressBar}}"
        TargetType="{x:Type ProgressBar}">
        <Setter Property="Foreground" Value="#2196F3" />
        <Setter Property="BorderThickness" Value="0" />
        <Setter Property="Height" Value="4" />
        <Setter Property="Minimum" Value="0" />
        <Setter Property="Maximum" Value="100" />
        <Setter Property="local:ProgressBarHelper.Foreground1" Value="{StaticResource ProgressBarForeground1}" />
        <Setter Property="local:ProgressBarHelper.Foreground2" Value="{StaticResource ProgressBarForeground2}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ProgressBar}">
                    <Border
                        Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        CornerRadius="1">
                        <Grid x:Name="PART_Track">
                            <Rectangle
                                x:Name="PART_Indicator"
                                Height="{TemplateBinding Height}"
                                HorizontalAlignment="Left"
                                RadiusX="1"
                                RadiusY="1">
                                <Rectangle.Fill>
                                    <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
                                        <GradientStopCollection>
                                            <GradientStop Offset="0" Color="{Binding Path=(local:ProgressBarHelper.Foreground1), RelativeSource={RelativeSource AncestorType=ProgressBar}, Mode=OneWay, FallbackValue={StaticResource ProgressBarForeground1}}" />
                                            <GradientStop Offset="1" Color="{Binding Path=(local:ProgressBarHelper.Foreground2), RelativeSource={RelativeSource AncestorType=ProgressBar}, Mode=OneWay, FallbackValue={StaticResource ProgressBarForeground2}}" />
                                        </GradientStopCollection>
                                    </LinearGradientBrush>
                                </Rectangle.Fill>
                            </Rectangle>
                            <Rectangle
                                x:Name="PART_IndeterminateIndicator"
                                Width="100"
                                Height="{TemplateBinding Height}"
                                HorizontalAlignment="Left"
                                RadiusX="1"
                                RadiusY="1">
                                <Rectangle.Fill>
                                    <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
                                        <GradientStopCollection>
                                            <GradientStop Offset="0" Color="{Binding Path=(local:ProgressBarHelper.Foreground1), RelativeSource={RelativeSource AncestorType=ProgressBar}, Mode=OneWay, FallbackValue={StaticResource ProgressBarForeground1}}" />
                                            <GradientStop Offset="1" Color="{Binding Path=(local:ProgressBarHelper.Foreground2), RelativeSource={RelativeSource AncestorType=ProgressBar}, Mode=OneWay, FallbackValue={StaticResource ProgressBarForeground2}}" />
                                        </GradientStopCollection>
                                    </LinearGradientBrush>
                                </Rectangle.Fill>
                                <Rectangle.Triggers>
                                    <EventTrigger RoutedEvent="Loaded">
                                        <BeginStoryboard>
                                            <Storyboard RepeatBehavior="Forever">
                                                <ThicknessAnimation
                                                    BeginTime="0:0:0.5"
                                                    Storyboard.TargetName="PART_IndeterminateIndicator"
                                                    Storyboard.TargetProperty="Margin"
                                                    From="0,0,0,0"
                                                    To="450,0,0,0"
                                                    Duration="0:0:2" />
                                                <DoubleAnimation
                                                    Storyboard.TargetName="PART_IndeterminateIndicator"
                                                    Storyboard.TargetProperty="Width"
                                                    From="0"
                                                    To="100"
                                                    Duration="0:0:0.5" />
                                            </Storyboard>
                                        </BeginStoryboard>
                                    </EventTrigger>
                                </Rectangle.Triggers>
                            </Rectangle>
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsIndeterminate" Value="True">
                            <Setter TargetName="PART_Indicator" Property="Visibility" Value="Collapsed" />
                            <Setter TargetName="PART_IndeterminateIndicator" Property="Visibility" Value="Visible" />
                        </Trigger>
                        <Trigger Property="IsIndeterminate" Value="False">
                            <Setter TargetName="PART_Indicator" Property="Visibility" Value="Visible" />
                            <Setter TargetName="PART_IndeterminateIndicator" Property="Visibility" Value="Collapsed" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style BasedOn="{StaticResource DefaultProgressBarStyle}" TargetType="{x:Type ProgressBar}" />

</ResourceDictionary>