I found that in my composable is recomposing every...

# compose

[zt]

I found that in my composable is recomposing every time the hue, saturation, or value params change. But if their type to a lambda producing a float, () -> Float, there's no recomposing and its skipped. I'm curious why this works and if it's good to do this change.

@Composable
public fun RingColorPicker(
    hue: Float,
    saturation: Float = 1f,
    value: Float = 1f,
    onHueChange: (Float) -> Unit,
    modifier: Modifier = Modifier,
    interactionSource: MutableInteractionSource = remember { MutableInteractionSource() },
    ringStrokeWidth: Dp = 16.dp,
    thumb: @Composable () -> Unit = {
        ColorPickerDefaults.Thumb(Color.hsv(hue, saturation, value), interactionSource)
    },
    onColorChangeFinished: () -> Unit = {}
)

[shikasd]

Could you provide example of how it is used?

[zt]

Do you mean the function itself? Like this

var hue by remember { mutableStateOf(90f) }

RingColorPicker(
    hue = { hue },
    onHueChange = { hue = it }
)

[shikasd]

that explains it, if you only read hue in draw, the state read is likely not recorded in composition

[shikasd]

see https://developer.android.com/develop/ui/compose/performance/bestpractices#defer-reads