v6.0.35

use-headroom

Create headers that are hidden after user scrolls past given distance
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Package
@asuikit/hooks

Usage

Use use-headroom hook to create headers that are hidden after user scrolls past given distance in px. The hook returns a boolean value that determines whether element should be pinned or hidden. Hook returns true when current scroll position is less than specified fixedAt value and after user scrolled up.

Header is pinned
import { Box, Portal, rem, Text } from '@asuikit/core';
import { useHeadroom } from '@asuikit/hooks';


function Demo() {
  const pinned = useHeadroom({ fixedAt: 120 });


  return (
    <>
      <Portal>
        <Box
          sx={(theme) => ({
            position: 'fixed',
            top: 0,
            left: 0,
            right: 0,
            padding: theme.spacing.xs,
            height: rem(60),
            zIndex: 1000000,
            transform: `translate3d(0, ${pinned ? 0 : rem(-110)}, 0)`,
            transition: 'transform 400ms ease',
            backgroundColor:
              theme.colorScheme === 'dark' ? theme.colors.dark[6] : theme.colors.gray[0],
          })}
        >
          Pinned header
        </Box>
      </Portal>
      <Text ta="center">Header is {pinned ? 'pinned' : 'not pinned'}</Text>
    </>
  );
}

Definition

function useHeadroom(input?: {
  /** Number in px at which element should be fixed */
  fixedAt?: number;


  /** Called when element is pinned */
  onPin?(): void;


  /** Called when element is at fixed position */
  onFix?(): void;


  /** Called when element is unpinned */
  onRelease?(): void;
}): boolean;
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