Is there a way to ensure that a composable would always be s kotlinlang #compose

Is there a way to ensure that a composable would always be square? So that regardless what the size of its content, the Width or Height would always be equal? I tried:

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modifier.layout { measurable, constraints ->
    val placeable = measurable.measure(constraints)

    val wrapperWidth = placeable.width.coerceIn(constraints.minWidth, constraints.maxWidth)
    val wrapperHeight = placeable.height.coerceIn(constraints.minHeight, constraints.maxHeight)
    val size = wrapperWidth.coerceAtLeast(wrapperHeight)
    layout(size, size) {
        placeable.placeRelative(0, 0)
    }
}

But I am only altering the position here since I already measured the placeable. Any hints?

allan.conda

01/28/2021, 10:11 AM

Modifier.aspectRatio(1f)

Archie

01/28/2021, 10:12 AM

Aspect ratio seems to completely consume all the space though...

allan.conda

01/28/2021, 10:12 AM

Not really, we use it for thumbnails

One of the dimensions should be defined I think

it has to relate to something

wrapContent() works too if I remember correctly

I think it takes the bigger side and matches the other

We use it in combo with `fillMaxWidth`or

weight

wrapContentSize

. It really depends on your use-case

Archie

01/28/2021, 10:33 AM

doesn't work unless you define the width or height or else it fills the whole space... your thumbnail probably have defined width or height thats why

the problem is that I can't define the width or height as it needs to adjust to its content...

jim

01/28/2021, 10:43 AM

cc @Adam Powell I think maybe this would require multi-pass layout, which is prohibited?

allan.conda

01/28/2021, 10:43 AM

@Archie I see, I got the difference from your use case

Archie

01/28/2021, 10:58 AM

@jim I'm also thinking if

SubcomposeLayout

would be the best fit for this usecase? I haven't really tried not really sure.

Timo Drick

01/28/2021, 1:18 PM

Did you tried this? :

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Modifier.preferredHeight(IntrinsicSize.Min).aspectRatio(1f)

Archie

01/29/2021, 8:47 AM

@Timo Drick, it would work. That assumes that the largest dimension is Height... If the bigger dimension is Width, then it will fail.