如何在UWP中包装ToggleSwitch的OffContent / OnContent？

Question

自定义切换开关中的OffContent / OnContent不适合一行，因为它在网格（放置ToggleSwitch的位置）中具有自定义文本和单元格不够宽。

Off / OnContent超出了ToggleSwitch元素的边界，即使我为OffContentTemplate和OnContentTemplate定义了自定义模板，也是如此

Problem example

<DataTemplate x:Key="ToggleSwitchTextBlockTemplate">
    <TextBlock
        TextWrapping="Wrap"
        Text="{Binding}"
        HorizontalAlignment="Stretch" />
</DataTemplate>

<ToggleSwitch
    Grid.Row="2"
    Grid.Column="0"
    x:Name="SomeToggle"
    Header="Some header"
    OffContent="Off content to verify if string is wrapped"
    OnContent="On content to verify if string is wrapped"
    OffContentTemplate="{StaticResource ToggleSwitchTextBlockTemplate}"
    OnContentTemplate="{StaticResource ToggleSwitchTextBlockTemplate}"
    Width="200" />

如何强制Off / OnContent包装并适应ToggleSwitch边界？

Desired results, where Off/OnContent is wrapped

Answer 1

在ToggleSwitch的样式中，有OffContentPresenter和OnContentPresenter代表OffContent和OnContent，您可以添加TextWrapping来包装内容，并设置Width来限制其宽度。关于完整样式，可以转到generic.xaml复制它。

。xaml：

       <Style x:Key="ToggleSwitchStyle1" TargetType="ToggleSwitch">
            ......
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ToggleSwitch">
                        <Grid Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" CornerRadius="{TemplateBinding CornerRadius}">
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition Height="*"/>
                            </Grid.RowDefinitions>
                            <VisualStateManager.VisualStateGroups>
                                ......
                            </VisualStateManager.VisualStateGroups>
                            <ContentPresenter x:Name="HeaderContentPresenter" AutomationProperties.AccessibilityView="Raw" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Foreground="{ThemeResource ToggleSwitchHeaderForeground}" IsHitTestVisible="False" Margin="{ThemeResource ToggleSwitchTopHeaderMargin}" Grid.Row="0" TextWrapping="Wrap" VerticalAlignment="Top" Visibility="Collapsed" x:DeferLoadStrategy="Lazy"/>
                            <Grid HorizontalAlignment="Left" MinWidth="{StaticResource ToggleSwitchThemeMinWidth}" Grid.Row="1" VerticalAlignment="Top">
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="Auto"/>
                                    <ColumnDefinition MaxWidth="12" Width="12"/>
                                    <ColumnDefinition Width="Auto"/>
                                </Grid.ColumnDefinitions>
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="{ThemeResource ToggleSwitchPreContentMargin}"/>
                                    <RowDefinition Height="Auto"/>
                                    <RowDefinition Height="{ThemeResource ToggleSwitchPostContentMargin}"/>
                                </Grid.RowDefinitions>
                                <Grid x:Name="SwitchAreaGrid" Background="{ThemeResource ToggleSwitchContainerBackground}" Grid.ColumnSpan="3" Control.IsTemplateFocusTarget="True" Margin="0,5" Grid.RowSpan="3"/>
                                <ContentPresenter TextWrapping="Wrap" Width="100" x:Name="OffContentPresenter" AutomationProperties.AccessibilityView="Raw" ContentTemplate="{TemplateBinding OffContentTemplate}" Content="{TemplateBinding OffContent}" Grid.Column="2" Foreground="{TemplateBinding Foreground}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="False" Opacity="0" Grid.RowSpan="3" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                                <ContentPresenter TextWrapping="Wrap" Width="100" x:Name="OnContentPresenter" AutomationProperties.AccessibilityView="Raw" ContentTemplate="{TemplateBinding OnContentTemplate}" Content="{TemplateBinding OnContent}" Grid.Column="2" Foreground="{TemplateBinding Foreground}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="False" Opacity="0" Grid.RowSpan="3" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                                ......

                            </Grid>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

或者您也可以在ToggleSwitch的OnContent和OffContent属性中放置一个TextBlock来实现它。

<ToggleSwitch Width="200" Grid.Row="2" Grid.Column="0" x:Name="SomeToggle" 
              Header="Some header" >
    <ToggleSwitch.OffContent>
        <TextBlock Width="100" TextWrapping="Wrap">Off content to verify if string is wrapped</TextBlock>
    </ToggleSwitch.OffContent>
</ToggleSwitch>