DraggableBox.kt

@Composable
fun BoxWithConstraintsScope.draggableBox() {
    Box(
        modifier = Modifier
            .fillMaxWidth()
            .height(boxHeight)
            .background(Color.White)
            .align(Alignment.BottomCenter)
            .pointerInput(Unit) {
                detectVerticalDragGestures { change, dragAmount ->
                    if (dragAmount < 0f) {
                        // dragging up
                    } else if (dragAmount > 0f) {
                        // dragging down
                    }
                }
            }
    ) {
        Image( .... ) // doggo here
    }
}