The problem with intrinsic size is that currently is not supported for SubcomposeLayout. So is there any other way to match the height of the Divider with the ComposableX?

My guess is that ConstraintLayout might help in that situation

I believe that this only centers the divider around the ComposambleX, keeping the size fixed. What I want is to find the height of the parent before the divider's composition. Also, the row is inside a

lazyColumn

which measures each child with infinite max height constrain (because it allows a child to be as big as it wants) meaning that you can't just apply

fillMaxHeight

modifier.

Well, the ConstraintLayout is definitely an option, you would use

height = Dimension.fillToConstraints

in your

constrainAs

block so it's not only centered. If your usecase is really that simple, I would just use modifier for

ComposableX

, something like this:

Modifier.drawBehind {
    drawLine(
        color = Color.Black,
        start = Offset(0F, 0F),
        end = Offset(0F, size.height),
        strokeWidth = 1.dp.toPx()
    )
}

Yeah my bad, I forgot about the

fillToConstraints

. I also found a solution using a

SubcomposeLayout

which can be used to measure the size of a child composable and use it on the composition of a second child. I guess the ContraintLayout is the best solution but I am not sure yet. My use case is not just a Divider and a Composable so I can't use the

drawBehind

modifier.