@nguyentc21/react-native-tooltip/lib/module/hooks/useOffsetViewStyles.js

Simple tooltip for React native app

import { useMemo } from 'react';
import calculateCaretWidth from '../utils/caret/calculateCaretWidth';
export default params => {
  const {
    caretSize,
    placement,
    offset
  } = params;
  return useMemo(() => {
    const caretWidth = calculateCaretWidth(caretSize);
    const caretHeight = caretWidth * 0.5;
    const totalOffset = caretHeight + offset;
    const isVerticalTooltip = placement === 'bottom' || placement === 'top';
    const offsetViewStyles = totalOffset ? {
      width: isVerticalTooltip ? '100%' : totalOffset,
      height: isVerticalTooltip ? totalOffset : '100%'
    } : undefined;
    return offsetViewStyles;
  }, [caretSize, offset, placement]);
};
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