Feature request: adding more widgets?

[biuld]

Is there any plan to add

1. advance widgets like Input, Box, Row, Column?
2. declarative ui layout，like kotter？

[noelwelsh]

I would like to do this. It would make the library much more useful. I'm not sure when I'll have time, though.

It's a moderately complicated job as this functionality needs to do its own layout and compositing, which is usually provided by an underling GUI toolkit. This perhaps makes it a more interesting task, however!