Configuring time and date from context menu of digital-clock applet

[Aaron J. Seigo]

On Thursday 28 May 2009, Chani wrote:
> On May 28, 2009 11:09:08 Aaron J. Seigo wrote:
> > On Thursday 28 May 2009, Chani wrote:
> > > > > PS: By the way, there is a bug about time configuration. By
> > > > > default, update interval of digital-clock plasmoid is 60 seconds
> > > > > when showSeconds is false, and 1 second if it's true. If you change
> > > > > time from clock kcm and showSeconds is false, digital-clock applet
> > > > > refreshes itself 1 minute later. Maybe updateInterval should be
> > > > > hardcoded as 1 second regardless of showSeconds variable.
> > > >
> > > > waking up 60x more often than necessary is a really good way to
> > > > reduce battery life. the clock doesn't update once a minute just
> > > > because it's lazy ;)
> > > >
> > > > as Daniel points out, the correct solution is a dbus signal (probably
> > > > from kded4) that we can listen to.
> > >
> > > I'd like to see any time-jump give all the dataengines a kick,
> > > actually.
> >
> > "any time jump" isn't possible without polling afaik. which isn't an
> > option.
>
> lame. there's no way to get notified when the system time is changed?

not that i've been able to find, and i've looked. every solution i've seen on 
the 'net so far requires polling. nothing from the kernel, nothing from ntp, 
nothing in posix ... meh.

maybe we should write and ship a custom linux kernel module :P

> > > we still (afaik) have the problem that coming out of suspend doesn't
> > > update the clock until the minute changes, and so on. I have an amusing
> > > screenshot of the clock and its tooltip disagreeing on the time. :)
> >
> > suspend is a different matter, however. we could do a forced "check your
> > timing" of all engines when we come out of suspend if the power manager
> > has such a signal for us to listen to.
>
> yeah, that'd probably do.
> there must be such a signal... right?

iirc there isn't right now. :( but hopefully we can add one for 4.4. *fingers 
crossed*

-- 
Aaron J. Seigo
humru othro a kohnu se
GPG Fingerprint: 8B8B 2209 0C6F 7C47 B1EA  EE75 D6B7 2EB1 A7F1 DB43

KDE core developer sponsored by Qt Software

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