[Enhancement]: Capture thumbnail should show the visible area

[JerryMerweather]

Which feature is your request related to?

Capture thumbnail

Describe your request for enhancements!

The capture thumbnail feature seems random, when actually it is not.

This is BECAUSE the user doesnt know the area included in the thumbnail.

Suggestion: Show the visisble are of the thumbnail by dimming areas that wont be shown in the thumbnail.

some thing similar to the profile icon cropping in the app mugshot found in Your linux probably :)

Additional context

No response

Code of Conduct

• [x] I agree to follow this project's Code of Conduct

[CodeDoctorDE]

Also allow for custom images for covers