LayerScope

The receiver of a Layer's content, through which GlassPane declares the layer's glass pane.

A layer holds its view, the child that names no region, as new JLayer(view) holds it, and the glass pane painted over that view, which is a composable of this scope because the pane is the layer's own: the declaration configures it and fills it with content.

Layer(
    onPaint = { g, width, height, paintView ->
        paintView()
        g.paint = veil
        g.fillRect(0, 0, width, height)
    },
) {
    Table(model = rows)
    if (busy) {
        GlassPane(PanelLayout.Border()) { ProgressBar(value = 0, indeterminate = true) }
    }
}

A layer holds nothing besides the view and the glass pane, and each shows one component, so two children that name no region, or two glass pane declarations, are refused. A view that goes away clears the view, and a glass pane declaration that goes away hides the layer's pane again.

See also