Support Widget Tinting

[Camji55]

Currently, customizing the home screen to use Clear or Tinted icon styes breaks the Loop Widget. This update allows the Loop Widget to play nicely with the customizations added in recent iOS versions.

Examples:

[marionbarker]

Is this an iOS 26 modification? I just merged Loop PR #2343 which disables some of the new UI features coming in with iOS 26.

[Camji55]

@marionbarker: Icon & widget tinting was first added in iOS 18 but functionality was extended a bit with iOS 26.

The App Icon could also use some work but that probably needs a broader discussion.

PR #2343 does not have any impact on how the widgets get rendered based on the user's customization settings.

Here's how the widget looks even with the changes from #2343. I'm on iOS 26 RC, but I imagine it renders similarly in iOS 18.

[marionbarker]

Finally worked on this today.

1. I don't use widgets on my home screen, so had no experience
   • I looked up how to use them and how to tint them
2. Once I did - pretty obvious this should be added

Screenshot on the left and middle are with straight dev. Graphics on right are with this PR.
The far left has no tint, the middle and right screenshots are tinted.

[marionbarker]

Test

The test above was with 3rd gen SE running iOS 18.6.2.

At this point in time, we are moving forward. I will not stop an improvement for iOS 16 through 18 (and 26) to support iOS 15.

Test with older phones.

Test with straight dev:

• iOS 16, widget is legible
• iOS 15, widget is legible

Test with the PR included

• iOS 16, widget is legible
• iOS 15, widget is blank but still works
  • tap on blank widget and go to Loop app
  • return to home screen, widget is briefly visible then turns white

[marionbarker]

Reviewed, tested and approved.

Note - this breaks widgets for iOS 15, but I expect iOS 15 support to be dropped soon.

[marionbarker]

Thanks for your contribution @Camji55.