problem with Accompanist navigation animations. `expandIn` and `shrinkOut` always expand in/shrink t...

# compose

[Marko Novakovic]

problem with Accompanist navigation animations. expandIn and shrinkOut always expand in/shrink to top left corner. setting `expandFrom`/`shrinkTowards` has no effect and default value for those two is Alignment = Alignment.BottomEnd.

[Colton Idle]

Probably will need some code to really tell what's wrong here. I've used it briefly and didn't have any issues.

[Marko Novakovic]

did you use expand and shrink animations?

[Doris Liu]

Have you tried adding fillMaxSize() to AnimatedNavHost? See discussion here:
https://kotlinlang.slack.com/archives/CJLTWPH7S/p1628536044113100?thread_ts=1628522573.089500&cid=CJLTWPH7S

[Doris Liu]

For the Alignment.BottomEnd, we'll need to support the content alignment on the AnimatedHost level to align the incoming/outgoing content to the bottom end when that content is smaller than parent.

[Marko Novakovic]

@Doris Liu I have and than it launches from the center. center is the default when AnimatedNavHost has modifier.fillMaxSize() added to it

[Doris Liu]

Yea, center is where the child would be placed by default in Box. To fully control where the child is when it's smaller than parent, we'll have to support contentAlignment .

Out of curiosity, is there a specific effect you are trying to achieve? 🙂

[Doris Liu]

Btw, contentAlignment is support in AnimatedContent, which is what AnimatedNavHost uses under the hood. If the visual effect you are going for can't be achieved w/ AnimatedContent, please let us know so we can add support for it.

[Marko Novakovic]

I am a bit confused right now

[Marko Novakovic]

I don’t need anything special I just used plain expandIn and shrinkOut as enterTransition and exitTransition and it’s not responding to expandFrom nor shrinkTowards contentAlignment parameter. that’s it

[Marko Novakovic]

what am confused about is: are you saying that contentAlignment will be fully supported soon or it is fully supported now?

[Doris Liu]

expandFrom and shrinkTowards refers to the clipped the content. It defines which part of the content to reveal first/last when clipped. contentAlignment defines the positioning of the clipped content in parent.

contentAlignment is supported in the level below AnimatedHost (i.e. AnimatedContent), but not surfaced in AnimatedHost. That's why I was suggesting trying out AnimatedContent and see whether it does what you want. If not, we can add support in AnimatedContent and surface that through AnimatedHost.

[Marko Novakovic]

I understand. I will try and report back