selectedPosition.kt

            var selectedPosition by remember { mutableStateOf(0) }
            val selectedBar by remember(selectedPosition, barAreas) {
                derivedStateOf {
                    barAreas.find { it.xStart < selectedPosition && selectedPosition < it.xEnd }
                }
            }
            
            Modifier.tapOrPress(
                        onStart = { },
                        onCancel = { },
                        onCompleted = { selectedPosition = it }
            )