I'm trying to create a modifier to "layout stuff vertically" EDIT: what I mean is: rotated 90 degree...

# compose

[Daniele Segato]

I'm trying to create a modifier to "layout stuff vertically"
EDIT: what I mean is: rotated 90 degree. But the composable take the space actually used (if you just rotate it takes the space as if you did not rotate it)

fun Modifier.layoutVertically() =
    rotate(-90f).layout { measurable, constraints ->
        val swappedConstraints = constraints.copy(
            minWidth = constraints.minHeight,
            maxWidth = constraints.maxHeight,
            minHeight = constraints.minWidth,
            maxHeight = constraints.maxWidth,
        )
        val placeable = measurable.measure(swappedConstraints)
        layout(placeable.height, placeable.width) {
            placeable.place(
                x = -(placeable.width / 2 - placeable.height / 2),
                y = -(placeable.height / 2 - placeable.width / 2)
            )
        }
    }

If I have a layout with this modifier inside I can't use Intrinsic sizing, I get this error:

java.lang.IllegalArgumentException: Can't represent a size of 2147483515 in Constraints

[Daniele Segato]

I can provide the full stack trace if needed

[Rafs]

Isn’t this what Column does?

[Daniele Segato]

I'm not sure I understand what you mean

[Rafs]

I mean laying out items vertically is supposed to be a job for a Column . I could be missing the motive behind your question though.

[Daniele Segato]

oh, that's not what the modifier does...
It rotate 90 degree whatever composable you apply it to.
But if you just use rotate it will take space as if you didn't rotate, this fixes that and compute the space it actually takes after rotating