I think the default should be stop retrieving data when the app is in the
background. An app should have to take the extra step if it is going to drain
the battery.
Clayne
-Original Message-
From: meego-dev-boun...@meego.com [mailto:meego-dev-boun...@meego.com] On
Behalf Of Zhang, Xing Z
Sent: Sunday, March 28, 2010 6:29 PM
To: Chris Pearson; meego-dev@meego.com
Subject: Re: [MeeGo-dev] How to get screen active application in Meego
Yes. Your concern is right.
Actually here would be API to application sets don't apply power management
policy
to me.
For these who don't set such flag, daemon will stop polling data for them.
There already API for application stop polling when it wants. But I don't
expect
application will be designed to power awareness, for example, stop requiring
data when switched to background. So I have to do as much as I can in my daemon
and library.
However, one thing will be guarantee, that daemon will not decide application's
behavior
or force application do something.
-Original Message-
From: Chris Pearson [mailto:chriscpear...@acm.org]
Sent: Monday, March 29, 2010 3:14 AM
To: Zhang, Xing Z; Jussi Kukkonen; meego-dev@meego.com
Subject: Re: [MeeGo-dev] How to get screen active application in Meego
Hi Xing,
Are you sure that all applications for your daemon would want polling to
stop when they are in the background? Can we not imagine an application
that runs in background (e.g., as an icon) and displays a pop-up message
when some sensor event is detected? If so, instead of the daemon deciding
how all application(s) must behave, why not allow each application to tell
the daemon when to stop polling (or what polling rate is required)? This
seems possible since there is already a connection between the application
and the daemon.
-- Chris
- Original Message -
From: Zhang, Xing Z xing.z.zh...@intel.com
To: Jussi Kukkonen j...@linux.intel.com; meego-dev@meego.com
Sent: Saturday, March 27, 2010 3:40 AM
Subject: Re: [MeeGo-dev] How to get screen active application in Meego
My application is a sensor daemon supplying data to application, e.g.
accelerometer data.
If an application connects to my daemon, the daemon will poll driver in a
high sample rate which obviously kills power.
so if I could know which application is viewable to user, I could stop
polling since sensor awareness application is running at background
My thought is to write a context provider of window manager to provide
such feature.
Thank you your suggestion. I will take a look of Libwnck first.
-Original Message-
From: meego-dev-boun...@meego.com
[mailto:meego-dev-boun...@meego.com] On Behalf Of Jussi Kukkonen
Sent: Friday, March 26, 2010 5:00 PM
To: meego-dev@meego.com
Subject: Re: [MeeGo-dev] How to get screen active application in Meego
Zhang, Xing Z wrote:
Hi all: Do we have method to get known which application is active on
screen now? I filter properties of contextkit, Session.State makes
sense to me. Is there a more detailed info tells me which application
is in fullscreen mode (by pid or others)?
Libwnck may be worth a look, but I don't know if it's available in all
versions... If you explain what you want to achieve (and in what
context), you might get better suggestions.
HTH,
Jussi
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