All these probably can be put into events and apps should be allowed to register and unregister to these events. Events in the interface would be something like: xxx.orientation() xxx.active() xxx.activeFullScreen() ... ...
myApp should be able to register to one or more events. And when those event occurs, myApp (and other registeredApps) would be notified (callbacks). poll generally drains the battery more than what we may like. Not to mention, there can be speed impacts too. But in few cases polling can't be avoided. So, try avoiding poll if you can. I have '0' linux development experience. Excuse me if I am way off track. Thanks, Kasi (@vkvraju) On 30 March 2010 07:11, Zhang, Xing Z <[email protected]> wrote: > This rule could not apply to all applications. For example, an application > may > run in background to detect window rotation event, it requires data in its > life-cycle. > For this kind application, there should be an interface to get over power > policy. > > > > -----Original Message----- > > From: Robison, Clayne B > > Sent: Tuesday, March 30, 2010 2:35 AM > > To: Zhang, Xing Z; Chris Pearson; [email protected] > > Subject: RE: [MeeGo-dev] How to get screen active application in Meego > > > > 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 > -- http://www.vkvraju.com http://vkvraju.blogspot.com http://vkvraju.wordpress.com
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