Is there a way to show preview of the left and right pages of a fixed size with accompanist `Pager`...

# compose

[Stanislav Pestov]

Is there a way to show preview of the left and right pages of a fixed size with accompanist Pager without parent measuring with BoxWithConstraints/SubcomposeLayout?

[Stanislav Pestov]

HorizontalPager(
  modifier = modifier.fillMaxWidth(),
  itemSpacing = 8.dp,
  state = pagerState,
) { pageIndex ->
  BoxWithConstraints {
    MyItem(
      modifier = Modifier.width(maxWidth - 32.dp),
    )
  }
}

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

Idk about the Pager component, but that looks like you’re re-implementing the padding modifier using subcomposition, which is a bad idea for a host of reasons. Why not just use a proper layout modifier?

[cb]

This isn't really about padding or Pager. There's no built in way to do what you're asking, but it's pretty simple to implement your own LayoutModifier which does this without subcomposition. Its basically a fillMaxWidth(minus = 32.dp)

[cb]

The alternative way is to do fillMaxWidth(0.9f), but that obviously won’t always be 32dp

[Stanislav Pestov]

Ok, thank you!

[Colton Idle]

@Stanislav Pestov let me know what you come up with.

[Stanislav Pestov]

@Colton Idle I have implemented modifier Modifier.fillMaxWidth(offset: Dp)

[Colton Idle]

Oooh. Thanks!