493730 - Views flicker on tab switching

Status: RESOLVED DUPLICATE of bug 466742

(Calendar :: Calendar Frontend, defect)

Description

[Daniel Boelzle [:dbo]]

follow-up from bug 387014 comment #22:
Whenever I switch from the mail tab to the calendar tab, Lightning computes and shows all the events in month view, clears them from the view, then shows them again.

Comment 1

[Pete Riley]

(In reply to comment #0)
> Whenever I switch from the mail tab to the calendar tab, Lightning computes and
> shows all the events in month view, clears them from the view, then shows them
> again.

Thanks for filing this bug Daniel, but I no longer see that behavior (I'm now using Lightning 1.0pre 2009-05-19).

Now I see Lightning draw each event in month view only once (when I switch to the calendar tab or navigate to different months).  This seems correct.

The strange part is I CAN SEE Lightning draw each event on the screen, one at a time.  It's very fast, but slow enough that I can see it.  Instead, I would expect Lightning to build the composite view in the background, then paint everything onto the screen at once.  Not a big deal though.

Comment 2

[Pete Riley]

> The strange part is I CAN SEE Lightning draw each event on the screen, one at a
> time.

Actually I think it's one *calendar* at a time, not one *event* at a time.

Comment 3

[Daniel Boelzle [:dbo]]

I see the flickering on large calendars, e.g. the musicians birthdays one.

Comment 4

[Stefan Sitter [:ssitter]]

I see a relation Bug 466741, maybe both can be solved in a similar way.