iOS use platformLayers=true by default

[dima-avdeev-jb]

We changed default iOS behavior for Dialogs and Popups. Now they will be opened in new platfrom layer, and will be positioned on fully available Application size.
It means that you may use Compose as a small part of iOS Application, but Dialogs may be opened bigger that initial Compose size.

For example, let's use Compose as a small part of SwiftUI screen:

struct ContentView: View {
    var body: some View {
        ComposeView()
                .frame(width: 200, height: 200)
    }
}

And Kotlin Code:

    ComposeUIViewController {
        Box(Modifier.fillMaxSize().background(Color.Blue.copy(0.5f)))
    }

As you can see Compose layouts just in small rectangle inside SwiftUI.

Now, let's add Dialog to Kotlin Code to display Dialog:

    ComposeUIViewController {
        var isDialogOpened by remember { mutableStateOf(false) }
        Box(Modifier.fillMaxSize().background(Color.Blue.copy(0.5f))) {
            Button(onClick = { isDialogOpened = true }) {
                Text("Open Dialog")
            }
        }
        if (isDialogOpened) {
            Dialog(
                onDismissRequest = { isDialogOpened = false }
            ) {
                Box(Modifier.size(400.dp).background(Color.Yellow.copy(0.5f))) {
                    Text("I am Dialog")
                }
            }
        }
    }

And result will be:

Now, Dialogs and Popups may have size bigger than initial Compose view.

But also we provide ability to switch this behavior to old once with flag platfomLayer:

ComposeUIViewController(
        configure = {
            platformLayers = false
        }
    ) {
// your Compose code
}