Make Form Sheet View cover percentage of entire screen

[JeffreyCA]

I want to make the form sheet cover X% of the entire screen (i.e. 80% screen width 80% screen height).

Initially I had something like this:

let transform = CGAffineTransform(scaleX: 0.8, y: 0.8)
formSheetController.presentationController?.contentViewSize = UIScreen.main.bounds.size.applying(transform)

However, the content size does not change on rotation (width, height displaying as if still in portrait mode).

I read in your README to use UILayoutFittingCompressedSize, however it returns a small box, not the entire screen. I want something that returns the full screen size, then want to apply a scale transform. I tried UILayoutFittingExpandedSize but that did not return entire screen size.