Hinting: menu underline too thick in Firefox

Bug #674920 reported by Leonidas Arvanitis on 2010-11-13
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Mozilla Firefox
Invalid
Undecided
Unassigned
Mozilla Thunderbird
Invalid
Undecided
Unassigned
pango1.0 (Ubuntu)
Medium
Unassigned

Bug Description

The underline bellow accelerator characters in Firefox and Thunderbird menus and pop-ups are very thick when using the Ubuntu font (see attached screenshot).

Comments:
* This doesn't happen with any other font I've tried (DejaVu Sans, Arial, Trebuchet MS to name a few).

* The Gtk engine used doesn't change anything (tried QtCurve and Raleigh).

* This doesn't happen in any other gtk application I've tested (Inkscape, Gimp, Chrome, OpenOffice suite).

My System:
(K)Ubuntu 10.10
Ubuntu-Font 0.69+ufl-0ubuntu1
Firefox 3.6.12+build1+nobinonly-0ubuntu0.10.10.1
KDE 4.5.3
Qt 4.7.0
Gtk2 "the one that comes with Ubuntu 10.10"

Leonidas Arvanitis (larvan) wrote :

I don't see this in Firefox or Thunderbird, what else could be the
cause? Which theme engine are you using?

Mark

I'm having the same problem here. In other gtk-Applications like Eclipse, Pidgin, etc every menu underscore is correct. Only in Firefox (3.6.12) and Thunderbird (3.1.6) all underscores are double thick as normal.

Leonidas Arvanitis (larvan) wrote :

I tried Archlinux and it still happens.

I also tried new firefox user without success.

There must be something wrong with the font.

Not sure if it's relevant but I have an nvidia GTX 470 using the binary driver (tried latest 256.x and 260.x)

Paul Sladen (sladen) wrote :

I suspect that this is a hinting issue with the dimensions of the underline at certain sizes.

Changed in ubuntu-font-family:
importance: Undecided → Medium
milestone: none → 1.00
status: New → Triaged
summary: - menu accelerators' underline too thick in firefox
+ Hinting: menu underline too thick in Firefox
Changed in firefox:
status: New → Invalid
Changed in thunderbird:
status: New → Invalid

Underlining, rather than the underscore character, isn't in the control
of the hint code. What it could be is a rounding issue - it's rounding
up to two pixels thick sooner than we think it should.

Dave

Matthew Paul Thomas (mpt) wrote :

I too have different font rendering (in my case, hinting) in Firefox+Thunderbird than in every other Ubuntu app, and no-one has ever figured out why.

Anyway, as David implied, this is not a problem with the Ubuntu font, since the font doesn't do underlining. It's more likely to be a problem with Pango.

affects: ubuntu-font-family → pango1.0 (Ubuntu)
Changed in pango1.0 (Ubuntu):
milestone: 1.00 → none
status: Triaged → Confirmed
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