prevent auto-off, screen off or dimming during emulation about vamigaweb HOT 5 CLOSED

Some apps manage to stay always on by themselves, e.g. Netflix, thanks God, does not off the phone every 30 seconds while watching a video :)

are these PWAs?

maybe we have to study this article
https://developer.chrome.com/blog/page-lifecycle-api/

from vamigaweb.

Oops you're right, Netflix is a full apo, not a PWA, and I have no idea on the restrictions on PWA... But I could see that Wakey manages to keep vAmigaWeb alive. Keep Alive ! does not, but it was last updated in 2017, some changes must have changed deeply in Android since then...

from vamigaweb.

I found a way to prevent auto off

https://developer.mozilla.org/en-US/docs/Web/API/Screen_Wake_Lock_API

from vamigaweb.

added the wake lock setting, it is a persistant setting. When emulation is running it prevents the device from dimming or shutting the screen off. On the other hand - when emulation is paused then OS is allowed to dim or shut off the screen for energy saving. When wake lock setting is off then it is up to the underlying system.

Tested in chrome for mac where it is fully working ... On safari 16 it is only partially supported ... see safari 17 changelog which is currently in beta will fix this. It will come out somewhen in september/october when apple brings the new phones

Safari 17 Beta Release Notes
----------------------------
...
* Fixed Wake Lock permission denied after visibilitychange. (108279602)
* Fixed Wake Lock API for web apps saved to the home screen. (107284303)
...

Wake lock was just recently added in safari 16.4, it works in vAmigaWeb when started directly under Safari somehow ... when restoring wake lock from cold start or when restoring the wake lock when switching back from other tabs / apps will often fail due to a denied permission (see above safari 17 bugfix)
When vAmigaWeb is saved to homescreen as PWA then safari 16 currently completely ignores the wake lock… see bugfix coming in safari 17 above.

We leave this issue open in case someone stumbles over the buggy safari 16 behaviour…

from vamigaweb.

vAmigaWeb fully supports wake lock now

from vamigaweb.