use-radial-move

Handles radial move behavior over given element, can be used to build custom radial sliders

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Usage

The use-radial-move hook can be used to create custom radial sliders. For example, the AngleSlider component is based on this hook. It works similarly to the use-move hook.

Example of creating a custom radial slider:

115°

import { useState } from 'react';
import { Box } from '@mantine/core';
import { useRadialMove } from '@mantine/hooks';
import classes from './Demo.module.css';

function Demo() {
  const [value, setValue] = useState(115);
  const { ref } = useRadialMove(setValue);

  return (
    <Box className={classes.root} ref={ref} style={{ '--angle': `${value}deg` }}>
      <div className={classes.value}>{value}°</div>
      <div className={classes.thumb} />
    </Box>
  );
}

Definition

interface UseRadialMoveOptions {
  /** Number by which value is incremented/decremented with mouse and touch events, `0.01` by default */
  step?: number;

  /** Called in `onMouseUp` and `onTouchEnd` events with the current value */
  onChangeEnd?: (value: number) => void;

  /** Called in `onMouseDown` and `onTouchStart` events */
  onScrubStart?: () => void;

  /** Called in `onMouseUp` and `onTouchEnd` events */
  onScrubEnd?: () => void;
}

interface UseRadialMoveReturnValue<T extends HTMLElement = any> {
  /** Ref to be passed to the element that should be used for radial move */
  ref: React.RefCallback<T | null>;

  /** Indicates whether the radial move is active */
  active: boolean;
}

function useRadialMove<T extends HTMLElement = HTMLDivElement>(
  onChange: (value: number) => void,
  options?: UseRadialMoveOptions,
): UseRadialMoveReturnValue<T>;

Exported types

UseRadialMoveOptions and UseRadialMoveReturnValue types are exported from the @mantine/hooks package; you can import them in your application:

import type { UseRadialMoveOptions, UseRadialMoveReturnValue } from '@mantine/hooks';

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