1303154 - Wrong vertical offset with multiple grid fragments

Status: NEW

(DevTools :: Inspector, defect, P3)

Description

[Gabriel Luong [:gl] (ΦωΦ)]

When there are many grid fragments (e.g. when a grid is inside a css columns layout like here: https://dl.dropboxusercontent.com/u/714210/filter-editor.html ): the grid highlighter inside the last column has a weird vertical offset. I think this is a platform issue with the getGridFragments method, but I'll let you check and discuss with Brad if needed. See this screenshot: https://dl.dropboxusercontent.com/u/714210/grid-highlighter-vertical-offset.png

Comment 1

[Gabriel Luong [:gl] (ΦωΦ)]

@Brad, this was originally reported by pbro in https://bugzilla.mozilla.org/show_bug.cgi?id=1282726. Can you take a check if this is indeed a platform issue.

Comment 2

[Brad Werth [:bradwerth]]

This is definitely a platform issue. I suspect that your case has the same root cause as bug 1278058. Please attach your testcase to this bug and I'll see if it can be resolved by the approach proposed to fix bug 1278058.

Comment 3

[Gabriel Luong [:gl] (ΦωΦ)]

Attachment: test-case.html

Test case: https://dl.dropboxusercontent.com/u/714210/filter-editor.html

Comment 4

[Matteo Ferretti [:zer0] [:matteo]]

Brad, any updates on this? Thanks!

Comment 5

[Brad Werth [:bradwerth]]

I'm sorry, but I haven't made meaningful progress on this. The progress I have made is on bug 1278058, but my most recent patch breaks a lot of tests and needs rethinking. I hope to get back to working on the problems with grid fragmentation soon.