Header and columns don't align when at > 100% zoom about scroller HOT 8 CLOSED

Chrome 40 on the exact same revision and OS and I don't seem to be able to reproduce this.

Zoom level in browsers is just a nightmare to support. It is different in every browser and they are all buggy... Generally I don't support anything other than 100% zoom - although obviously it is a nice to have if it works correctly! Any other way to reproduce this, or perhaps you could try inspecting the element to see if it does have padding?

from scroller.

Yes, it has padding, and it's even explicitly assigned!

<div class="dataTables_scrollHeadInner" style="box-sizing: content-box; width: 869px; padding-left: 14px;">

Did you reload the page? This only repros for me if the page's first render is at > 100% zoom -- just zooming in on an already rendered DataTable is fine.

from scroller.

Also repros on Safari 8, but does not seem to repro on Firefox 33 (maybe WebKit related?).

from scroller.

Bizarrely I can't reproduce on Safari either.

Exact steps I've taken:

1. Load page
2. Zoom using cmd-+
3. Reload
4. All the same.

Ooo. I think I might know what it is - the left-to-right detection in DataTables... I remember getting a report a little while back that when the zoom level was adjusted it made DataTables think it was right-to-left, so it puts space for the scrollbar on the left...

I'll bet that is what it is.

Could you do me a favour and on the page when that problem is showing open the console and punch in:

$.fn.dataTableSettings[0].oBrowser.bScrollbarLeft

My guess is that it will show true...

from scroller.

Yes, that's it!

> $.fn.dataTableSettings[0].oBrowser.bScrollbarLeft
true

from scroller.

Got it - thanks!

It wasn't appearing on my machine as I've got (had) this machine configured to Apple's new scrollbars - zero width and floating. With scrollbars shown it was immediately visible.

The problem it turns out was indeed the left scrollbar detection - when DataTables checks for the position of an inner element that it set to be 1px, it expected to get back 1px, but when zoomed it was actually returning a non-integer value: 0.9943181276321411.

I've added a call to Math.round which should address the problem.

Thanks for your help investigating this.

This bug on the DataTables core repo also notes this issue.

from scroller.

The fix and I'm just about to rebuild the nightly.

from scroller.

Awesome. Thanks!

from scroller.