XFEToolBox

<UserControl x:Class="XFEToolBox.WpfCore.Controls.ScrollTextBlock"
             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"
             mc:Ignorable="d"
             d:DesignHeight="24" d:DesignWidth="160"
             x:Name="scrollTextBlock"
             Loaded="ScrollTextBlock_Loaded"
             Unloaded="ScrollTextBlock_Unloaded"
             SizeChanged="ScrollTextBlock_SizeChanged"
             MouseEnter="ScrollTextBlock_MouseEnter"
             MouseLeave="ScrollTextBlock_MouseLeave">
    <Grid ClipToBounds="True">
        <!-- 非悬停状态始终保留省略号，避免长文本直接被硬裁切。 -->
        <TextBlock x:Name="ellipsisTextBlock"
                   Text="{Binding InnerText, ElementName=scrollTextBlock}"
                   Foreground="{Binding InnerForeground, ElementName=scrollTextBlock}"
                   Background="{Binding InnerBackground, ElementName=scrollTextBlock}"
                   FontSize="{Binding InnerFontSize, ElementName=scrollTextBlock}"
                   FontFamily="{Binding InnerFontFamily, ElementName=scrollTextBlock}"
                   FontWeight="{Binding InnerFontWeight, ElementName=scrollTextBlock}"
                   TextAlignment="{Binding InnerTextAlignment, ElementName=scrollTextBlock}"
                   TextDecorations="{Binding InnerTextDecorations, ElementName=scrollTextBlock}"
                   VerticalAlignment="{Binding InnerTextVerticalAlignment, ElementName=scrollTextBlock}"
                   HorizontalAlignment="Stretch"
                   TextWrapping="NoWrap"
                   TextTrimming="CharacterEllipsis"/>

        <!-- 只有文本确实溢出且鼠标悬停时才显示滚动层。Hidden 保证可测得完整文本宽度。 -->
        <ScrollViewer x:Name="scrollViewer"
                      Visibility="Hidden"
                      HorizontalScrollBarVisibility="Hidden"
                      VerticalScrollBarVisibility="Disabled"
                      Focusable="False">
            <StackPanel x:Name="stackPanel" Orientation="Horizontal"
                        VerticalAlignment="Center" HorizontalAlignment="Left">
                <TextBlock x:Name="textBlock"
                           Text="{Binding InnerText, ElementName=scrollTextBlock}"
                           Foreground="{Binding InnerForeground, ElementName=scrollTextBlock}"
                           Background="{Binding InnerBackground, ElementName=scrollTextBlock}"
                           FontSize="{Binding InnerFontSize, ElementName=scrollTextBlock}"
                           FontFamily="{Binding InnerFontFamily, ElementName=scrollTextBlock}"
                           FontWeight="{Binding InnerFontWeight, ElementName=scrollTextBlock}"
                           TextAlignment="Left"
                           TextDecorations="{Binding InnerTextDecorations, ElementName=scrollTextBlock}"
                           VerticalAlignment="{Binding InnerTextVerticalAlignment, ElementName=scrollTextBlock}"
                           TextWrapping="NoWrap"/>
            </StackPanel>
        </ScrollViewer>
    </Grid>
</UserControl>