Links clipped on scroll

GoXam
1

Hi,

I’m seeing some corruption of links as I scroll my diagram. Anything that produces a redraw fixes it, but it seems that the link is clipping to bounds that cause the arrowhead to be cut in half. It happens apparently at random as I scroll, though if I see it happening, then scrolling up and down will eventually reproduce it.

The appearance of the links when clipped:

Using WPF Inspector I was able to select the “Link” element and see its bounds:

Evidently it is not correctly calculating this. If I do anything to change the visuals (which I assume causes an arrange to run) then it correctly calculates this.

One thing that might be related is that the links sometimes have a label (if there’s only 1 going into the shape), and this label is in this example set to Visibility=Hidden. It should therefore still be in the bounds of the link, but inspecting that should it is outside of it:

I’ve tried adding margins to link panels without success, my link template is as simple as I can get it:

Pasted image978×299 12.3 KB

Is there anyway to pad or add a margin that will work around this?

Thanks,
Will

2

That’s very odd. Precisely what version of the GoXam library are you using?
Version 2.2.2 is current. Perhaps the latest version will have fixed this bug.

3

File Version of dll is 2.2.2.4, I only downloaded it a few weeks ago.

4

Scrolling just changes a transform, so the behavior that you report is very unusual. I will try to reproduce the problem.

5

Hi Walter,

One point that might help you reproduce this is that I have turned on virtualization using the sample code provided in the release.

Thanks,
Will

6

Ah, that’s important to know.

Also, does the problem ever happen when the link’s label remains visible?

7

No, in fact when it happens, it happens to every single link on the screen, except those that have a label visible.