Question

是否有办法,作为XAML中另一个物体的剪辑的一部分,我可以使用一种正常的矩形(沙皮)。似乎我能够这样做,但解决办法却让我 el。

<Canvas>

        <Rectangle Name="ClipRect" RadiusY="10" RadiusX="10" Stroke="Black" StrokeThickness="0" Width="32.4" Height="164"/>

<!-- This is the part that I cant quite figure out.... -->
<Rectangle Width="100" Height="100" Clip={Binding ElementName=ClipRect, Path="??"/>

</Canvas>

I know that I can use a RectangleGeometry type approach, but I am more interested in the solution in terms of the code presented above.

Answer 1

Try Shape.RenderedGeometry Property 。

<Rectangle Width="100" Height="100"
           Clip="{Binding ElementName=ClipRect, Path=RenderedGeometry}" />

Answer 2

ClipRect.DefiningGeometry nd ClipRect.RenderedGeometry 仅载有<代码>RadiusX和RadiusY。页: 1



我不敢确定你想要达到什么目标(从你的样本中看,我不清楚),但你可以写一个<代码>。 可从参考<代码>中提取你所要求的信息。 具体内容:

public class RectangleToGeometryConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        var rect = value as Rectangle;

        if (rect == null || targetType != typeof(Geometry))
        {
            return null;
        }

        return new RectangleGeometry(new Rect(new Size(rect.Width, rect.Height)))
        { 
            RadiusX = rect.RadiusX, 
            RadiusY = rect.RadiusY 
        };
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}


之后,你将在你具有约束力的定义中使用这一转换器:

<Rectangle Width="100" Height="100" 
            Clip="{Binding ElementName=ClipRect, Converter={StaticResource RectangleToGeometryConverter}}">


Of course you need to add the converter to your resources first:

<Window.Resources>
    <local:RectangleToGeometryConverter x:Key="RectangleToGeometryConverter" />
</Window.Resources>

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