810569 - Wrong tab rendering when "layout.css.devPixelsPerPx" property is more than "1.0"

Status: RESOLVED WORKSFORME

(Thunderbird :: Theme, defect)

Description

[Nickolay Mazurkin]

Attachment: Ugly tabs when layout.css.devPixelsPerPx > 1

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:16.0) Gecko/20100101 Firefox/16.0
Build ID: 20121025210744

Steps to reproduce:

I got a new laptop with 15'' 1980x1080 screen. 

Menus and dialogs in Thunderbird are displayed well but plain-text message text looks too small so I decided to set "layout.css.devPixelsPerPx" property to "1.3" as I did in Firefox. Everything looks perfect now except tabs which seem to have some style problems.

Environment:
- Xubuntu 12.04
- XFCE 4.8
- resolution 120 dpi is set for the system


Actual results:

Everything works fine but upper tabs looks very ugly (llook at the tabs on the screenshot attached)


Expected results:

Tabs should be rendered correctly

Comment 1

[Nickolay Mazurkin]

I have fixed this annoying bug with Stylish the following style chunk

.tab-background {
  background: transparent!important;
  margin: 0px !important;
}

.tab-background[selected=true] {
  background: -moz-Dialog!important;
} 

.tabmail-tab:not([selected]):not(:hover) +
.tabmail-tab:not([selected]):not(:hover)::before {
  background: transparent!important;
}

Comment 2

[Richard Marti (:Paenglab)]

I can't see this issue on Ubuntu, KDE or Mint with force DPI to fonts. Maybe this setting isn't the same as yours. I also don't know why the tab isn't filled properly, the svg has set fill=-moz-Dialog. Maybe this is a svg bug.

Andreas, please can you check if you see this bug on your system?

Comment 3

[Richard Marti (:Paenglab)]

I can't see this issue on Ubuntu, KDE or Mint with force DPI to fonts. Maybe this setting isn't the same as yours. I also don't know why the tab isn't filled properly, the svg has set fill=-moz-Dialog. Maybe this is a svg bug.

Andreas, please can you check if you see this bug on your system?

Comment 4

[Andreas Nilsson (:andreasn)]

How do I force the DPI? gconf?

Comment 5

[Andreas Nilsson (:andreasn)]

I also set layout.css.devPixelsPerPx to 1.3 (and a bunch of other values), and I'm unable reproduce this too.
This is under GNOME 3.4 on Fedora 17

Comment 6

[Nickolay Mazurkin]

Some details, home these would help

- 15'' screen laptop
- 1920x1080 resolution
- xubuntu 12.04 (XFCE 4.8)
- system DPI is set to 120
- Radiance system theme
- Humanity icon theme
- Ubuntu 10 as a main system font
- Thunderbird 16.0.2+build1-0ubuntu0.12.04.1 from standard repository
- Clean run (rm -rf ~/.thunderbird)
- After I set layout.css.devPixelsPerPx=1.3 these unformed tabs appear and this is the only problem I see

Comment 7

[Wayne Mery (:wsmwk)]

paenglab, does comment 6 help?

Comment 8

[Richard Marti (:Paenglab)]

I can't reproduce this on Linux.

TB 16 had the first implementation of the Australis tabs. Now they are differently implemented and this shouldn't happen now.

Nickolay, can you reproduce this issue with actual TB?

Comment 9

[Nickolay Mazurkin]

TB 45.5.1 - tabs are OK on Xubuntu with layout.css.devPixelsPerPx=1.3, no additional patching is required

Comment 10

[Richard Marti (:Paenglab)]

Thank you, Nickolay.