Closed Bug 604735 Opened 11 years ago Closed 10 years ago

artifact (line) shows at left edge of tab just as tab close animation completes


(Firefox :: Tabbed Browser, defect)

Not set



Firefox 4.0b8


(Reporter: beltzner, Assigned: dao)



(3 files)

See attached .mov

Anyone know what's causing that?
The tab has a width of 1px there; what you see is the CSS borders.
Assignee: nobody → dao
Component: Theme → Tabbed Browser
OS: Mac OS X → All
QA Contact: theme → tabbed.browser
Hardware: x86 → All
(In reply to comment #2)
> The tab has a width of 1px there; what you see is the CSS borders.

We should optimize the tab-close so that it vanishes after the tab is 3px wide, I think.
Attached patch patchSplinter Review
This hides the tab for the last 20ms of the closing transition and for the first 20ms of the opening transition.

It also changes the transition target resp. start width from 1px to 0 (using 0.1px because min-width:0 would disable the min-width altogether).

I tried 3px, but that wouldn't fix the bug, as that's still to narrow to draw the border properly, at least on Windows an Linux. It also caused a visible jump at the end of the transition.
Attachment #483670 - Flags: review?(
Comment on attachment 483670 [details] [diff] [review]

Can you add some comments? It took me a while to figure out why the different values were what they are.

I'm assuming the idea is that (180ms delay)+(50ms "fade out" transition)+(20ms of opacity=0) is equal to the 250ms max-width transition length (for the closing case).
Attachment #483670 - Flags: review?( → review+
Keywords: checkin-needed
Keywords: checkin-needed
Depends on: 608589
Closed: 10 years ago
No longer depends on: 608589
Resolution: --- → FIXED
Target Milestone: --- → Firefox 4.0b8
Attachment #483561 - Attachment mime type: application/octet-stream → video/quicktime
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