<div class="tool-rectangle" :style="$methods.setStyle(tempStyle)"> <div class="rectangle"> </div> </div> </template> 怎么在tool-rectangle 这个div中使用行内样式写伪元素属性呢

要在 `tool-rectangle` 这个 `<div>` 中使用行内样式来写伪元素的属性，您可以通过 `style` 属性来实现。以下是一个示例代码：

<div class="tool-rectangle" :style="$methods.setStyle(tempStyle)">
  <style>
    .tool-rectangle::before {
      content: "";
      display: block;
      width: 20px;
      height: 20px;
      background-color: red;
    }
  </style>
  
  <div class="rectangle">
    <!-- 这里是您的内容 -->
  </div>
</div>

在上述代码中，我们使用 `:style="$methods.setStyle(tempStyle)"` 来动态设置 `tool-rectangle` 的行内样式，这可能是一个在 Vue 组件中使用的动态绑定。然后，我们在 `<style>` 标签内部使用 `.tool-rectangle::before` 选择器来选择 `tool-rectangle` 元素的伪元素 `::before`，并为其设置样式。

请确保在 Vue 组件中正确设置行内样式，以及根据您的需求修改伪元素的样式。希望对您有所帮助！如有任何问题，请随时提问。

相关问题

<ItemsControl x:Class="HDSProject.Control.CustomFont" 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" xmlns:local="clr-namespace:HDSProject.Control" mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800" x:Name="itemCtrl" ItemsSource="{Binding Path=Title2, RelativeSource={RelativeSource Mode=Self}}" FontSize="20" Foreground="Teal" > <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Horizontal"/> </ItemsPanelTemplate> </ItemsControl.ItemsPanel> <ItemsControl.ItemTemplate> <DataTemplate> <StackPanel> <Border Margin="{Binding Path=CharacterSpacing, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}"> <TextBlock Text="{Binding}" /> </Border> <Rectangle Height="1" Fill="{Binding Foreground, ElementName=itemCtrl}" Margin="0,0,0,5"> <Rectangle.Style> <Style TargetType="Rectangle"> <Setter Property="Visibility" Value="Collapsed" /> <Style.Triggers> <DataTrigger Binding="{Binding ShowUnderline, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}" Value="True"> <Setter Property="Visibility" Value="Visible" /> </DataTrigger> </Style.Triggers> </Style> </Rectangle.Style> </Rectangle> </StackPanel> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl>让DataTemplate中的文字水平垂直居中展示

可以将StackPanel改为Grid，并设置VerticalAlignment和HorizontalAlignment属性为Center，如下所示：

<ItemsControl.ItemTemplate>
    <DataTemplate>
        <Grid VerticalAlignment="Center" HorizontalAlignment="Center">
            <Border Margin="{Binding Path=CharacterSpacing, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}">
                <TextBlock Text="{Binding}" />
            </Border>
            <Rectangle Height="1" Fill="{Binding Foreground, ElementName=itemCtrl}" Margin="0,0,0,5">
                <Rectangle.Style>
                    <Style TargetType="Rectangle">
                        <Setter Property="Visibility" Value="Collapsed" />
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding ShowUnderline, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}" Value="True">
                                <Setter Property="Visibility" Value="Visible" />
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </Rectangle.Style>
            </Rectangle>
        </Grid>
    </DataTemplate>
</ItemsControl.ItemTemplate>

<ItemsControl x:Class="HDSProject.Control.CustomFont" 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" xmlns:local="clr-namespace:HDSProject.Control" mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800" x:Name="itemCtrl" ItemsSource="{Binding Path=Title2, RelativeSource={RelativeSource Mode=Self}}" FontSize="20" Foreground="Teal" > <ItemsControl.ItemContainerStyle> <Style TargetType="ContentPresenter"> <Setter Property="VerticalAlignment" Value="Center" /> </Style> </ItemsControl.ItemContainerStyle> <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Horizontal" HorizontalAlignment="Center"/> </ItemsPanelTemplate> </ItemsControl.ItemsPanel> <ItemsControl.ItemTemplate> <DataTemplate> <StackPanel> <Border Margin="{Binding Path=CharacterSpacing, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}"> <TextBlock Text="{Binding}" /> </Border> <Rectangle Height="1" Fill="{Binding Foreground, ElementName=itemCtrl}" Margin="0,0,0,5"> <Rectangle.Style> <Style TargetType="Rectangle"> <Setter Property="Visibility" Value="Collapsed" /> <Style.Triggers> <DataTrigger Binding="{Binding ShowUnderline, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}" Value="True"> <Setter Property="Visibility" Value="Visible" /> </DataTrigger> </Style.Triggers> </Style> </Rectangle.Style> </Rectangle> </StackPanel> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl>给这个自定义控件添加Thumb

要给这个自定义控件添加Thumb，可以在ItemsControl的外层包裹一个Grid，然后在Grid的右下角添加一个Thumb。以下是修改后的代码示例：

<Grid>
  <ItemsControl x:Name="itemCtrl" ItemsSource="{Binding Path=Title2, RelativeSource={RelativeSource Mode=Self}}" FontSize="20" Foreground="Teal" >
    <ItemsControl.ItemContainerStyle>
      <Style TargetType="ContentPresenter">
        <Setter Property="VerticalAlignment" Value="Center" />
      </Style>
    </ItemsControl.ItemContainerStyle>
    <ItemsControl.ItemsPanel>
      <ItemsPanelTemplate>
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Center"/>
      </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>
    <ItemsControl.ItemTemplate>
      <DataTemplate>
        <StackPanel>
          <Border Margin="{Binding Path=CharacterSpacing, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}">
            <TextBlock Text="{Binding}" />
          </Border>
          <Rectangle Height="1" Fill="{Binding Foreground, ElementName=itemCtrl}" Margin="0,0,0,5">
            <Rectangle.Style>
              <Style TargetType="Rectangle">
                <Setter Property="Visibility" Value="Collapsed" />
                <Style.Triggers>
                  <DataTrigger Binding="{Binding ShowUnderline, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:CustomFont}}" Value="True">
                    <Setter Property="Visibility" Value="Visible" />
                  </DataTrigger>
                </Style.Triggers>
              </Style>
            </Rectangle.Style>
          </Rectangle>
        </StackPanel>
      </DataTemplate>
    </ItemsControl.ItemTemplate>
  </ItemsControl>
  <Thumb DragDelta="Thumb_DragDelta" Width="10" Height="10" HorizontalAlignment="Right" VerticalAlignment="Bottom" />
</Grid>

注意，这里我添加了一个Thumb，并且为它绑定了DragDelta事件。您需要在代码中实现Thumb_DragDelta方法，以便在Thumb被拖动时进行相应的处理。