dvStudioImageFits top-level constant
How an image fills its box, by the names Flutter uses.
A design says it per image: a photograph fills its frame and is cropped, a logo fits inside and is not. Cover is the default every document written before this relied on, and it is also what an unrecognised name falls back to -- a document outlives the version that wrote it, and a page that will not render because one word is misspelled is worse than one that shows the picture.
Implementation
const List<String> dvStudioImageFits = <String>[
'cover',
'contain',
'fill',
'fitWidth',
'fitHeight',
'none',
'scaleDown',
];