VerticalSlider

VerticalCenteredSliderSample

@OptIn(ExperimentalMaterial3ExpressiveApi::class)
@Preview
@Composable
fun VerticalCenteredSliderSample() {
    val coroutineScope = rememberCoroutineScope()
    val sliderState =
        rememberSliderState(
            // Only allow multiples of 10. Excluding the endpoints of `valueRange`,
            // there are 9 steps (10, 20, ..., 90).
            steps = 9,
            valueRange = -50f..50f,
        )
    val snapAnimationSpec = MaterialTheme.motionScheme.fastEffectsSpec<Float>()
    var currentValue by rememberSaveable { mutableFloatStateOf(sliderState.value) }
    var animateJob: Job? by remember { mutableStateOf(null) }
    sliderState.shouldAutoSnap = false
    sliderState.onValueChange = { newValue ->
        currentValue = newValue
        // only update the sliderState instantly if dragging
        if (sliderState.isDragging) {
            animateJob?.cancel()
            sliderState.value = newValue
        }
    }
    sliderState.onValueChangeFinished = {
        animateJob =
            coroutineScope.launch {
                animate(
                    initialValue = sliderState.value,
                    targetValue = currentValue,
                    animationSpec = snapAnimationSpec,
                ) { value, _ ->
                    sliderState.value = value
                }
            }
    }
    val interactionSource = remember { MutableInteractionSource() }
    Column(modifier = Modifier.padding(horizontal = 16.dp)) {
        Text(
            modifier = Modifier.align(Alignment.CenterHorizontally),
            text = "%.2f".format(sliderState.value),
        )
        Spacer(Modifier.height(16.dp))
        VerticalSlider(
            state = sliderState,
            modifier =
                Modifier.height(300.dp)
                    .align(Alignment.CenterHorizontally)
                    .progressSemantics(
                        currentValue,
                        sliderState.valueRange.start..sliderState.valueRange.endInclusive,
                        sliderState.steps,
                    ),
            interactionSource = interactionSource,
            track = { SliderDefaults.CenteredTrack(sliderState = sliderState) },
            reverseDirection = true,
        )
    }
}

VerticalSliderSample

@OptIn(ExperimentalMaterial3ExpressiveApi::class)
@Preview
@Composable
fun VerticalSliderSample() {
    val coroutineScope = rememberCoroutineScope()
    val sliderState =
        rememberSliderState(
            // Only allow multiples of 10. Excluding the endpoints of `valueRange`,
            // there are 9 steps (10, 20, ..., 90).
            steps = 9,
            valueRange = 0f..100f,
        )
    val snapAnimationSpec = MaterialTheme.motionScheme.fastEffectsSpec<Float>()
    var currentValue by rememberSaveable { mutableFloatStateOf(sliderState.value) }
    var animateJob: Job? by remember { mutableStateOf(null) }
    sliderState.shouldAutoSnap = false
    sliderState.onValueChange = { newValue ->
        currentValue = newValue
        // only update the sliderState instantly if dragging
        if (sliderState.isDragging) {
            animateJob?.cancel()
            sliderState.value = newValue
        }
    }
    sliderState.onValueChangeFinished = {
        animateJob =
            coroutineScope.launch {
                animate(
                    initialValue = sliderState.value,
                    targetValue = currentValue,
                    animationSpec = snapAnimationSpec,
                ) { value, _ ->
                    sliderState.value = value
                }
            }
    }
    val interactionSource = remember { MutableInteractionSource() }
    Column(modifier = Modifier.padding(horizontal = 16.dp)) {
        Text(
            modifier = Modifier.align(Alignment.CenterHorizontally),
            text = "%.2f".format(sliderState.value),
        )
        Spacer(Modifier.height(16.dp))
        VerticalSlider(
            state = sliderState,
            modifier =
                Modifier.height(300.dp)
                    .align(Alignment.CenterHorizontally)
                    .progressSemantics(
                        currentValue,
                        sliderState.valueRange.start..sliderState.valueRange.endInclusive,
                        sliderState.steps,
                    ),
            interactionSource = interactionSource,
            track = {
                SliderDefaults.Track(
                    sliderState = sliderState,
                    modifier = Modifier.width(36.dp),
                    trackCornerSize = 12.dp,
                )
            },
            reverseDirection = true,
        )
    }
}