SideView.kt

@Composable()
fun SideView(
    boxHeight: Dp,
    drag: Drag
) {
    val position = drag.position
    val flingConfig = drag.flingConfig
    val yOffset = with(DensityAmbient.current) { position.value.toDp() }
    val toggleAsset = state { R.drawable.ic_keyboard_arrow_left_24 }
    Box(
        Modifier.offset(x = yOffset, y = 0.dp)
            .fillMaxWidth()
            .draggable(
                startDragImmediately = position.isRunning,
                dragDirection = DragDirection.Horizontal,
                onDragStopped = { position.fling(flingConfig, it) }
            ) { delta ->
                position.snapTo(position.value + delta)
                delta
            }
            .preferredHeight(boxHeight),
        backgroundColor = AppState.theme.primary,
        gravity = ContentGravity.CenterStart
    ) {
       ...
    }
}