Canvas useHoveredObject.ts

71.42% Statements 15/21

71.42% Branches 5/7

50% Functions 2/4

86.66% Lines 13/15

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  import { useCallback, useState } from "react";
 
type HoveredObjectState = {
  hoveredObjectId: number | undefined;
  isHovered: boolean;
};
 
export function useHoveredObject() {
  const [hoveredObject, setHoveredObject] = useState<HoveredObjectState>({
    hoveredObjectId: undefined,
    isHovered: false,
  });
 
  const showHover = useCallback((hoveredObjectId: number) => {
    setHoveredObject((current) => {
      if (current.isHovered && current.hoveredObjectId === hoveredObjectId) {
        return current;
      }
      return { hoveredObjectId, isHovered: true };
    });
  }, []);
 
  const clearHover = useCallback(() => {
    setHoveredObject({ hoveredObjectId: undefined, isHovered: false });
  }, []);
 
  return {
    hoveredObjectId: hoveredObject.hoveredObjectId,
    isHovered: hoveredObject.isHovered,
    showHover,
    clearHover,
  };
}