OneHandedGestureScrollIndicator

OneHandedGestureScalingLazyColumnSample

@Composable
fun OneHandedGestureScalingLazyColumnSample() {
    val backDispatcherOwner = LocalOnBackPressedDispatcherOwner.current
    val onClick =
        remember<() -> Unit> { { backDispatcherOwner?.onBackPressedDispatcher?.onBackPressed() } }
    val scrollState = rememberScalingLazyListState()
    val buttonInteractionSource = remember { MutableInteractionSource() }
    val buttonGestureConfig =
        rememberOneHandedGestureConfiguration(
            action = GestureAction.Primary,
            priority = GesturePriority.Clickable,
        )
    val buttonIndicatorState = remember { OneHandedGestureIndicatorState() }
    val scrollGestureConfig =
        rememberOneHandedGestureConfiguration(
            action = GestureAction.Primary,
            priority = GesturePriority.Scrollable,
        )
    val scrollIndicatorState = remember { OneHandedGestureIndicatorState() }
    ScreenScaffold(
        scrollState = scrollState,
        edgeButton = {
            EdgeButton(
                onClick = onClick,
                interactionSource = buttonInteractionSource,
                modifier =
                    if (scrollState.canScrollForward) {
                        Modifier
                    } else {
                        // Apply the one-handed gesture modifier only when the container cannot
                        // scroll further, ensuring the EdgeButton is fully visible and interactive
                        Modifier.oneHandedGesture(
                            gestureConfiguration = buttonGestureConfig,
                            interactionSource = buttonInteractionSource,
                            onGestureLabel = "close",
                            onGestureAvailable = { buttonIndicatorState.isIndicatorActive = true },
                            onGesture = onClick,
                        )
                    } then
                        Modifier.scrollable(
                            state = scrollState,
                            orientation = Orientation.Vertical,
                            reverseDirection = true,
                            overscrollEffect = rememberOverscrollEffect(),
                        ),
            ) {
                OneHandedGestureIndicator(buttonGestureConfig, buttonIndicatorState) {
                    Text("Close")
                }
            }
        },
        scrollIndicator = {
            OneHandedGestureScrollIndicator(
                gestureConfiguration = scrollGestureConfig,
                indicatorState = scrollIndicatorState,
                scrollState = scrollState,
                modifier = Modifier.align(Alignment.CenterEnd),
            )
        },
    ) { contentPadding ->
        ScalingLazyColumn(
            state = scrollState,
            contentPadding = contentPadding,
            modifier =
                Modifier.fillMaxSize()
                    .oneHandedGesture(
                        gestureConfiguration = scrollGestureConfig,
                        onGestureLabel = "scroll",
                        onGestureAvailable = { scrollIndicatorState.isIndicatorActive = true },
                        onGesture = { OneHandedGestureDefaults.scrollDown(scrollState) },
                    ),
            autoCentering = null,
        ) {
            items(10) { Text("Item $it") }
        }
    }
}

OneHandedGestureTransformingLazyColumnSample

@Composable
fun OneHandedGestureTransformingLazyColumnSample() {
    val backDispatcherOwner = LocalOnBackPressedDispatcherOwner.current
    val onClick =
        remember<() -> Unit> { { backDispatcherOwner?.onBackPressedDispatcher?.onBackPressed() } }
    val scrollState = rememberTransformingLazyColumnState()
    val buttonInteractionSource = remember { MutableInteractionSource() }
    val buttonGestureConfig =
        rememberOneHandedGestureConfiguration(
            action = GestureAction.Primary,
            priority = GesturePriority.Clickable,
        )
    val buttonIndicatorState = remember { OneHandedGestureIndicatorState() }
    val scrollGestureConfig =
        rememberOneHandedGestureConfiguration(
            action = GestureAction.Primary,
            priority = GesturePriority.Scrollable,
        )
    val scrollIndicatorState = remember { OneHandedGestureIndicatorState() }
    ScreenScaffold(
        scrollState = scrollState,
        edgeButton = {
            EdgeButton(
                onClick = onClick,
                interactionSource = buttonInteractionSource,
                modifier =
                    if (scrollState.canScrollForward) {
                        Modifier
                    } else {
                        // Apply the one-handed gesture modifier only when the container cannot
                        // scroll further, ensuring the EdgeButton is fully visible and interactive
                        Modifier.oneHandedGesture(
                            gestureConfiguration = buttonGestureConfig,
                            interactionSource = buttonInteractionSource,
                            onGestureLabel = "close",
                            onGestureAvailable = { buttonIndicatorState.isIndicatorActive = true },
                            onGesture = onClick,
                        )
                    } then
                        Modifier.scrollable(
                            state = scrollState,
                            orientation = Orientation.Vertical,
                            reverseDirection = true,
                            overscrollEffect = rememberOverscrollEffect(),
                        ),
            ) {
                OneHandedGestureIndicator(buttonGestureConfig, buttonIndicatorState) {
                    Text("Close")
                }
            }
        },
        scrollIndicator = {
            OneHandedGestureScrollIndicator(
                gestureConfiguration = scrollGestureConfig,
                indicatorState = scrollIndicatorState,
                scrollState = scrollState,
                modifier = Modifier.align(Alignment.CenterEnd),
            )
        },
    ) { contentPadding ->
        TransformingLazyColumn(
            state = scrollState,
            contentPadding = contentPadding,
            modifier =
                Modifier.fillMaxSize()
                    .oneHandedGesture(
                        gestureConfiguration = scrollGestureConfig,
                        onGestureLabel = "scroll",
                        onGestureAvailable = { scrollIndicatorState.isIndicatorActive = true },
                        onGesture = { OneHandedGestureDefaults.scrollDown(scrollState) },
                    ),
        ) {
            items(10) { Text("Item $it") }
        }
    }
}