SHJX_GM/SHJX.Service.Library/CustomControl/Resources/AutoDisappearScrollViewerStyle.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
                    xmlns:sys="clr-namespace:System;assembly=mscorlib">

    <sys:Double x:Key="ScrollBar.Thumb.Width">6</sys:Double>
    
    <SolidColorBrush x:Key="ScrollThumb_Background">#90686868</SolidColorBrush>
    <SolidColorBrush x:Key="ScrollThumb_MouseOver_Background">#686868</SolidColorBrush>

    <Style x:Key="ScrollBarThumb" TargetType="{x:Type Thumb}">
        <Setter Property="OverridesDefaultStyle" Value="true" />
        <Setter Property="IsTabStop" Value="false" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Thumb}">
                    <Grid>
                        <Rectangle x:Name="thumbRect" Fill="{StaticResource ScrollThumb_Background}" RadiusX="3" RadiusY="3" />
                    </Grid>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter TargetName="thumbRect" Property="Fill" Value="{StaticResource ScrollThumb_MouseOver_Background}" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="HorizontalScrollBarPageButton" TargetType="{x:Type RepeatButton}">
        <Setter Property="OverridesDefaultStyle" Value="true" />
        <Setter Property="Background" Value="Transparent" />
        <Setter Property="Focusable" Value="false" />
        <Setter Property="IsTabStop" Value="false" />
        <Setter Property="Opacity" Value="0" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Rectangle Width="{TemplateBinding Width}"
                               Height="{TemplateBinding Height}"
                               Fill="{TemplateBinding Background}" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="VerticalScrollBarPageButton" TargetType="{x:Type RepeatButton}">
        <Setter Property="OverridesDefaultStyle" Value="true" />
        <Setter Property="Background" Value="Transparent" />
        <Setter Property="Focusable" Value="false" />
        <Setter Property="IsTabStop" Value="false" />
        <Setter Property="Opacity" Value="0" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Rectangle Width="{TemplateBinding Width}"
                               Height="{TemplateBinding Height}"
                               Fill="{TemplateBinding Background}" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="for_scrollbar" TargetType="{x:Type ScrollBar}">
        <Setter Property="Stylus.IsPressAndHoldEnabled" Value="false" />
        <Setter Property="Stylus.IsFlicksEnabled" Value="false" />
        <Setter Property="Background" Value="Transparent" />
        <Setter Property="Margin" Value="0,1,1,1" />
        <Setter Property="Width" Value="{StaticResource ScrollBar.Thumb.Width}" />
        <Setter Property="MinWidth" Value="5" />
        <Setter Property="Opacity" Value="0" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ScrollBar}">
                    <Grid x:Name="Bg" SnapsToDevicePixels="true">
                        <Track x:Name="PART_Track" IsDirectionReversed="true"
                               IsEnabled="{TemplateBinding IsMouseOver}">
                            <Track.DecreaseRepeatButton>
                                <RepeatButton Command="{x:Static ScrollBar.PageUpCommand}" Style="{StaticResource VerticalScrollBarPageButton}" />
                            </Track.DecreaseRepeatButton>
                            <Track.IncreaseRepeatButton>
                                <RepeatButton Command="{x:Static ScrollBar.PageDownCommand}" Style="{StaticResource VerticalScrollBarPageButton}" />
                            </Track.IncreaseRepeatButton>
                            <Track.Thumb>
                                <Thumb Style="{StaticResource ScrollBarThumb}" />
                            </Track.Thumb>
                        </Track>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <Trigger Property="Orientation" Value="Horizontal">
                <Setter Property="Background" Value="Transparent" />
                <Setter Property="Margin" Value="1,0,6,1" />
                <Setter Property="Height" Value="5" />
                <Setter Property="MinHeight" Value="5" />
                <Setter Property="Width" Value="Auto" />
                <Setter Property="Opacity" Value="0" />
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type ScrollBar}">
                            <Grid x:Name="Bg" SnapsToDevicePixels="true">
                                <Track x:Name="PART_Track" IsEnabled="{TemplateBinding IsMouseOver}">
                                    <Track.DecreaseRepeatButton>
                                        <RepeatButton Command="{x:Static ScrollBar.PageLeftCommand}" Style="{StaticResource HorizontalScrollBarPageButton}" />
                                    </Track.DecreaseRepeatButton>
                                    <Track.IncreaseRepeatButton>
                                        <RepeatButton Command="{x:Static ScrollBar.PageRightCommand}" Style="{StaticResource HorizontalScrollBarPageButton}" />
                                    </Track.IncreaseRepeatButton>
                                    <Track.Thumb>
                                        <Thumb Style="{StaticResource ScrollBarThumb}" />
                                    </Track.Thumb>
                                </Track>
                            </Grid>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Trigger>
        </Style.Triggers>
    </Style>

    <!--  ScrollViewer  -->
    <Style x:Key="AutoDisappearScrollViewerStyle" TargetType="{x:Type ScrollViewer}">
        <Setter Property="BorderBrush" Value="LightGray" />
        <Setter Property="BorderThickness" Value="0" />
        <!--<Setter Property="HorizontalContentAlignment" Value="Left" />-->
        <Setter Property="HorizontalScrollBarVisibility" Value="Auto" />
        <!--<Setter Property="VerticalContentAlignment" Value="Top" />-->
        <Setter Property="VerticalScrollBarVisibility" Value="Auto" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ScrollViewer}">
                    <Border x:Name="Bd" Background="Transparent" BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}"
                            SnapsToDevicePixels="True">
                        <Grid Background="{TemplateBinding Background}">
                            <ScrollContentPresenter Margin="{TemplateBinding Padding}"
                                                    ContentTemplate="{TemplateBinding ContentTemplate}"
                                                    Cursor="{TemplateBinding Cursor}" />
                            <ScrollBar x:Name="PART_VerticalScrollBar" HorizontalAlignment="Right"
                                       Maximum="{TemplateBinding ScrollableHeight}"
                                       Orientation="Vertical"
                                       Style="{StaticResource for_scrollbar}"
                                       ViewportSize="{TemplateBinding ViewportHeight}"
                                       Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"
                                       Value="{TemplateBinding VerticalOffset}" />
                            <ScrollBar x:Name="PART_HorizontalScrollBar" VerticalAlignment="Bottom"
                                       Maximum="{TemplateBinding ScrollableWidth}"
                                       Orientation="Horizontal"
                                       Style="{StaticResource for_scrollbar}"
                                       ViewportSize="{TemplateBinding ViewportWidth}"
                                       Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"
                                       Value="{TemplateBinding HorizontalOffset}" />
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <!--<EventTrigger RoutedEvent="ScrollChanged">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation Duration="0:0:1" Storyboard.TargetName="PART_VerticalScrollBar" Storyboard.TargetProperty="Opacity" To="1" />
                                    <DoubleAnimation BeginTime="0:0:1" Duration="0:0:1" Storyboard.TargetName="PART_VerticalScrollBar" Storyboard.TargetProperty="Opacity" To="0" />
                                    <DoubleAnimation Duration="0:0:1" Storyboard.TargetName="PART_HorizontalScrollBar" Storyboard.TargetProperty="Opacity" To="1" />
                                    <DoubleAnimation BeginTime="0:0:1" Duration="0:0:1" Storyboard.TargetName="PART_HorizontalScrollBar" Storyboard.TargetProperty="Opacity" To="0" />
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>-->
                        <EventTrigger RoutedEvent="MouseEnter" SourceName="Bd">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation Duration="0:0:0.2" Storyboard.TargetName="PART_VerticalScrollBar" Storyboard.TargetProperty="Opacity" To="1" />
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                        <EventTrigger RoutedEvent="MouseLeave" SourceName="Bd">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation BeginTime="0:0:1" Duration="0:0:0.5" Storyboard.TargetName="PART_VerticalScrollBar" Storyboard.TargetProperty="Opacity" To="0" />
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                        <EventTrigger RoutedEvent="MouseEnter" SourceName="Bd">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation Duration="0:0:0.2" Storyboard.TargetName="PART_HorizontalScrollBar" Storyboard.TargetProperty="Opacity" To="1" />
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                        <EventTrigger RoutedEvent="MouseLeave" SourceName="Bd">
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation BeginTime="0:0:1" Duration="0:0:0.5" Storyboard.TargetName="PART_HorizontalScrollBar" Storyboard.TargetProperty="Opacity" To="0" />
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>