PreviewerLayerScope
constructor(viewerContainer: @Composable (page: Int, viewerState: ImageViewerState, viewer: @Composable () -> Unit) -> Unit = { _, _, viewer -> viewer() }, background: @Composable (page: Int) -> Unit = { _ -> defaultPreviewBackground() }, foreground: @Composable (page: Int) -> Unit = { _ -> }, placeholder: PreviewerPlaceholder = PreviewerPlaceholder())