WPF Adorner剪辑 [英] WPF Adorner Clipping

问题描述

我在 ScrollViewer 中有一个 ItemsControl 。 ItemsControl 中的项目被扩展为 DataTemplate ，该模板基本上由 Adorner 组成。 code>。

I have an ItemsControl in a ScrollViewer. The items in the ItemsControl are expanded to a DataTemplate which basically consists of an Adorner.

现在的问题是，滚动时， Adorner 的可视子级可见在 ScrollViewer 之外。假设我从水平偏移量 0滚动到100， Adorner 的可视子级向左移动，并且在 ScrollViewer旁边可见，尽管它们应该被隐藏。在 ItemsControl 或 ScrollViewer 上设置 ClipToBounds 无效。

Now the problem is, when scrolling, the Visual Children of the Adorner are visible outside the ScrollViewer. Lets say I scroll from the Horizontal Offset 0 to 100, the Visual Children of the Adorner move to the left and are visible next to the ScrollViewer, although they should be hidden. Setting ClipToBounds on the ItemsControl or the ScrollViewer does not work.

我了解到， Adorner 在所有元素上都是按z顺序排列的，但实际上不应该在 ScrollViewer 这样的情况下可见。装饰的 Element 的行为与预期的一样，并且不能通过 ScrollViewer 看到。

I understand, that Adorner are rendered above all elements z-order wise, but they really shouldn't be visible in such cases as with the ScrollViewer. The adorned Element by the way behaves like expected and is not visible through the ScrollViewer.

是否有任何简便的方法来剪切 Adorner ，以便它们仅在可见的滚动区域中可见？

Is there any easy way to "clip" the Adorners, so that they are only visible in the visible scroll area?

谢谢，
Andrej

Thanks, Andrej

推荐答案

设置包含控件上的ClipToBounds 是不够的。您还必须设置装饰者的 IsClipEnabled 属性。

Setting ClipToBounds on the containing control is not enough. You must set the adorner's IsClipEnabled property too.

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