How do I get proper `fillMaxWidth` inside sth with `horizontalScroll`(by default it is ignored)? I s...

# compose

[mcpiroman]

How do I get proper fillMaxWidth inside sth with `horizontalScroll`(by default it is ignored)?
I simply want the background to span all available width.

[Zach Klippenstein (he/him) [MOD]]

If you use a lazy row, you can use fillMaxParentWidth (docs), otherwise you could use BoxWithConstraints to get the available max constraints before the scrollable.

[mcpiroman]

So with `BoxWithConstraints`I would measure the space, inside it use a scrollable, inside it use the max constraint as a width? Might not work if there is a padding applied along the way but will try.

[Zach Klippenstein (he/him) [MOD]]

Yea, if you have a more complex layout it might be better to just use a custom layout and make your own fillMaxParentWidth-like modifier

[Chris Sinco [G]]

Also it seems you are wanting to build a Pager/Carousel with the LazyRow? You might want to check out the Accompanist Pager as well: https://google.github.io/accompanist/pager/

[mcpiroman]

Thanks but not, I have a tree view over a `Column`(and so I want each node to highlight at full width when selected, just like in IJ) and then it's actually CfD

[Chris Sinco [G]]

Ah I see I misunderstood 🤦

[Chris Sinco [G]]

Have you posted a similar question in #compose-desktop?

[mcpiroman]

Even if so it must have been long ago cause I don't remember doing that 🙂