937850 - [HiDPI] Australis tabs don't flow smoothly into top border of Nav Bar.

Status: RESOLVED DUPLICATE of bug 946987

(Firefox :: Theme, defect)

Description

[Gary [:streetwolf52]]

Attachment: Capture.PNG

See attachment

Comment 1

[Matthew N. [:MattN]]

Hello Gary, can you see if this is fixed/better in today's nightly (out in a few hours) now that bug 908796 was backed out to fix bug 910983 (I think this is a dupe of it).

Comment 2

[Gary [:streetwolf52]]

The back out did not fix the tabs. It appears that the anti-aliasing at the areas that I indicated on my screenshot need some fixing.  There are too many dark colored pixels on the tab that drop below the nav bar border.

Comment 3

[Gary [:streetwolf52]]

This problem might be another case of HiDPI.  If I set layout.css.devPixelsPerPx = 1.0, which I assume is 96 dpi, the tab curves look better.  Either way the tab borders are different then the Navigation bar border. The Nav border seems to be darker. I need a dpi of 120 in order to read comfortably so 96 dpi is not an option for me.

Comment 4

[Gary [:streetwolf52]]

To really see what the problem is look at a screen that is inactive.  The flow from the tabs to the nav bar on both sides really 'pop' out.  You might need to use a HiDPI like 120 to see the problem.

Comment 5

[Gary [:streetwolf52]]

Attachment: Inactive screen to show tab problem more clearly.

Comment 6

[Paul Silaghi, QA [:pauly]]

Do you still reproduce this in the latest nightly ?

Comment 7

[Gary [:streetwolf52]]

Yes I can. You can really see the problem if you apply this Persona: 

https://addons.mozilla.org/en-US/firefox/addon/brushed-metal-xp/

Comment 8

[Paul Silaghi, QA [:pauly]]

(In reply to Gary [:streetwolf] from comment #4)
> To really see what the problem is look at a screen that is inactive.  The
> flow from the tabs to the nav bar on both sides really 'pop' out.
I see the problem only above of the curve, but not below like in your screenshots. But I use 2 normal 22'' displays, not HiDPI ones.
29.0a1 (2014-01-31), win 7 x64

Comment 9

[Gary [:streetwolf52]]

I used the pref 'layout.css.devPixelsPerPx' = 1 to essentially set the dpi to 96 which is not HiDPI.  Everything displays fine this way.  So this particular problem is another case of a high DPI causing visual problems.  I see lots of this sort of thing since Fx started using the OS DPI in Fx way back when.

Comment 10

[Gary [:streetwolf52]]

btw... you might be able to run Fx in HiDPI mode by setting the pref above to any value above 1.0.  1.2 might do it.