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: [email protected] [mailto:[email protected]] On Behalf Of Zhang, Xing Z Sent: Sunday, March 28, 2010 6:29 PM To: Chris Pearson; [email protected] 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:[email protected]] > Sent: Monday, March 29, 2010 3:14 AM > To: Zhang, Xing Z; Jussi Kukkonen; [email protected] > 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" <[email protected]> > To: "Jussi Kukkonen" <[email protected]>; <[email protected]> > 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: [email protected] > >> [mailto:[email protected]] On Behalf Of Jussi Kukkonen > >> Sent: Friday, March 26, 2010 5:00 PM > >> To: [email protected] > >> 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 > >> _______________________________________________ > >> MeeGo-dev mailing list > >> [email protected] > >> http://lists.meego.com/listinfo/meego-dev > > _______________________________________________ > > MeeGo-dev mailing list > > [email protected] > > http://lists.meego.com/listinfo/meego-dev _______________________________________________ MeeGo-dev mailing list [email protected] http://lists.meego.com/listinfo/meego-dev _______________________________________________ MeeGo-dev mailing list [email protected] http://lists.meego.com/listinfo/meego-dev
