RotatorTile with context indicator

[TheSETJ]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  <!-- Please search GitHub for a similar issue or PR before submitting -->
[x] Feature request <!-- Please file a UserVoice request and include the link below https://wpdev.uservoice.com/forums/110705-universal-windows-platform/category/193402-uwp-community-toolkit -->
[ ] Sample app request
[ ] Documentation issue or request
[ ] Question of Support request => Please do not submit support request here, instead see https://github.com/Microsoft/UWPCommunityToolkit/blob/master/contributing.md#question

UserVoice link

https://wpdev.uservoice.com/forums/110705-universal-windows-platform/suggestions/32645665-selection-indicator-for-rotatortile

Current behavior

Expected behavior

An indicator displaying currently selected (or displayed) item's index.

There is a sample here about how to implement such behavior with FlipView, but it's for Windows8/8.1.

Minimal reproduction of the problem with instructions

Environment

Nuget Package(s): 

Package Version(s): 

Windows 10 Build Number:
- [ ] Anniversary Update (14393) 
- [ ] Creators Update (15063)
- [ ] Fall Creators Update (16299)
- [ ] Insider Build (xxxxx)

App min and target version:
- [ ] Anniversary Update (14393) 
- [ ] Creators Update (15063)
- [ ] Fall Creators Update (16299)
- [ ] Insider Build (xxxxx)

Device form factor:
- [ ] Desktop
- [ ] Mobile
- [ ] Xbox
- [ ] Surface Hub
- [ ] IoT

Visual Studio 
- [ ] 2017 15.3
- [ ] 2017 15.4

[nmetulev]

The sample should also work for the FlipView in Windows 10, no?

[TheSETJ]

I've used it in an app. It works, but RotatorTile seems cleaner than what I've used.

[michael-hawker]

@nmetulev I wonder if we could just make the RotatorTile a FlipView extension+style?

I also stumbled upon this, which could be a good starting point: https://gist.github.com/robmikh/1b9d89de53617feb037e5db6074680ab

[gbarcho]

Whats the status? Can we archive/close it?

[michael-hawker]

Going to close this issue, as I believe this will be addressed by the WinUI PagerControl.

[SavoySchuler]

@michael-hawker, @gbarcho, and @TheSETJ, this feature has been split from the PagerControl development into its own proposal by merit of being distinct enough from the other suite of pager solutions. Please be sure to give it a thumbs up here and provide any feedback necessary to make sure it works for you. Thanks!

[micahl]

Perhaps this should be part of a CarouselView control?