Adam Barth fc711a10cd Custom switch images are nutty (#4852)
Rather than requiring the developer to specify a full Decoration, we now
just take an ImageProvider for the thumb image. Also, fix
ImageFit.scaleDown to actually work.

Fixes #4571
Fixes #4673
2016-07-08 09:51:51 -07:00
..
2016-06-22 10:42:02 -07:00