Question

我需要为标签创建一个ToolTip，该标签始终是Label大小的两倍。我无法获得正确的工具提示。

我的代码在这里；我已经包含了一个复杂的模板，但是如果我使用字符串值，问题是相同的：

<Window x:Class="MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Width="200"        Height="200"        Title="MainWindow">

    <Window.Resources>
        <ControlTemplate x:Key="Density">
            <StackPanel>
                <TextBlock  Text="" />
                <Separator Margin="2,0" BorderBrush="Black" />
                <TextBlock  Text="³" />
            </StackPanel>
        </ControlTemplate>

        <TransformGroup x:Key="DoubleSize">
            <ScaleTransform CenterX="0.5" CenterY="0.5"  ScaleX="2" ScaleY="2" />
            <SkewTransform />
            <RotateTransform />
            <TranslateTransform />
        </TransformGroup>

        <Style x:Key="TTipStyle" TargetType="ToolTip">
            <Setter Property="RenderTransform" Value="{StaticResource DoubleSize}"/>
            <Setter Property="OverridesDefaultStyle" Value="True" />
            <Setter Property="HasDropShadow" Value="True" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate >
                        <Grid Height="{TemplateBinding Height}" Width="{TemplateBinding Width}" Background="AliceBlue">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" />
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>

    <Grid>
        <Label HorizontalAlignment="Center" VerticalAlignment="Center" Template="{StaticResource Density}">
            <Label.ToolTip>
                <ToolTip RenderTransform="{StaticResource DoubleSize}" Background="AliceBlue" Style="{StaticResource TTipStyle}" Template="{StaticResource Density}" />
            </Label.ToolTip>
        </Label>
        <ContentControl HorizontalAlignment="Left" VerticalAlignment="Top" Template="{StaticResource Density}" RenderTransform="{StaticResource DoubleSize}"/>
        <TextBlock HorizontalAlignment="Center" VerticalAlignment="Top" Text="::---- THIS SIZE TOOLTIP"/>
    </Grid>

</Window>

我应该如何为工具提示定义一种样式，该样式的大小范围要足以容纳完整的双倍标签内容？

Answer 1

将RenderTransform移出ToolTip标签本身...

<ToolTip Background="AliceBlue" Style="{StaticResource TTipStyle}" Template="{StaticResource Density}" />

...然后按照您的样式删除RenderTransform和Template并设置LayoutTransform：

<Style x:Key="TTipStyle" TargetType="ToolTip">
    <Setter Property="OverridesDefaultStyle" Value="True" />
    <Setter Property="HasDropShadow" Value="True" />
    <Setter Property="LayoutTransform">
        <Setter.Value>
            <ScaleTransform ScaleX="2" ScaleY="2" />
        </Setter.Value>
    </Setter>
</Style>

动态大小的工具提示正确的XAML是什么？

1 个答案: