将鼠标悬停在标签更改矩形背景渐变上 [英] Hover over label change rectangle background gradient

问题描述

我有一个矩形，上面有几个标签和图像，而且当用户将鼠标悬停在矩形上时，背景会变为渐变：

I have a rectange with several labels and images over it, and I have it so that when the user hovers their mouse over the rectangle the background changes to a gradient:

<Rectangle Height="88" HorizontalAlignment="Left" Margin="54,28,0,0" Name="rectangle2" VerticalAlignment="Top"
        Width="327" Cursor="Hand">
    <Rectangle.Style>
        <Style TargetType="{x:Type Rectangle}">
            <Setter Property="Fill" Value="Transparent" />
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Fill">
                        <Setter.Value>
                            <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
                                <GradientStop Color="White" Offset="0.0" />
                                <GradientStop Color="#eee" Offset="1" />
                            </LinearGradientBrush>
                        </Setter.Value>
                    </Setter>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Rectangle.Style>
</Rectangle>

但是，当我将鼠标悬停在矩形上方的标签之一上时，背景渐变不会显示

However, when I hover over one of the labels that is over the rectangle the background gradient does not show.

我要制作它，以便将鼠标悬停在标签和矩形上时显示渐变。

I want to make it so that the gradient shows when hovering over the labels as well as the rectangle.

这可能吗？

推荐答案

如果通过 over表示覆盖，而不是在上方，则可以将内容包装在Grid中（对于以上情况，我想您也可以这样做，但是您应该定义行和列）并使用 DataTrigger 会触发此操作，如果鼠标位于包装网格上方，不仅是矩形本身，例如：

If by "over" you mean overlayed and not above you can wrap the contents in a Grid (for above you could do this as well i guess, but you should define rows & columns) and use a DataTrigger which triggers if the mouse is over the wrapping grid and not only the rectangle itself, e.g.:

<Grid HorizontalAlignment="Center" VerticalAlignment="Center">
    <Rectangle Width="100" Height="100" StrokeThickness="1" Stroke="Black">
        <Rectangle.Style>
            <Style TargetType="{x:Type Rectangle}">
                <Setter Property="Fill" Value="Transparent" />
                <Style.Triggers>
                    <DataTrigger Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType=Grid}}" Value="True">
                        <Setter Property="Fill">
                            <Setter.Value>
                                <!-- Brush here -->
                            </Setter.Value>
                        </Setter>
                    </DataTrigger>
                </Style.Triggers>
            </Style>
        </Rectangle.Style>
    </Rectangle>
    <Label Name="label" Content="This is a Label" />
</Grid>

或者，如果标签被覆盖，则可以通过设置<$ c $来使鼠标事件通过标签c> IsHitTestVisible 到 false 。

Alternatively if the label is overlayed you can make mouse events pass through the Label by setting IsHitTestVisible to false.

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