Silverlight：画布溢出 [英] Silverlight: Canvas overflows

问题描述

我创建了一个Canvas，在其中放置一个StackPanel。 StackPanel是水平的，它接受缩略图像的列表。画布有固定的大小。当我把更多的缩略图比Canvas宽度可以容纳，StackPanel应该从画布溢出，所以我可以移动它到当前缩略图的中心。

I have created a Canvas, and within it I placed a StackPanel. The StackPanel is horizontal, and it accepts a list of thumbnailed images. The Canvas has a fixed size. When I put more thumbnails than the Canvas width can hold, the StackPanel is supposed to overflow from the Canvas, so I can move it to center the current thumbnail.

一切正常正确，只有StackPanel的溢出是可见的！有没有办法隐藏它？还是整个方法都错了？

Everything works correctly, only, the StackPanel's overflow is visible! Is there a way to hide it? Or is the entire approach wrong?

这是一个截图。画布是红色的盒子。堆叠面板是蓝色半透明的。

Here is a screenshot. The canvas is the red box. The stackpanel is blue semi-transparent.

http://www.netpalantir.it/static/sl_canvas_overflows.jpg

谢谢！

推荐答案

由于Canvas有固定大小，因此您可以使用 clipping 。基本上你必须做：

Since the Canvas has fixed size, you can use clipping. Basically you have to do:

<Canvas Width="400" Height="300">
    <Canvas.Clip>
            <RectangleGeometry Rect="0, 0, 400, 300"/>
    </Canvas.Clip>
    <!-- your StackPanel here -->
</Canvas> 

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