square-accordion

1import { cn } from "@/lib/utils";
2 
3const SQUARE_ACCORDION_BLOCKS = ["█", "▓", "▒"] as const;
4 
5type SquareAccordionProps = React.ComponentProps<"span"> & {
6  blocks?: readonly string[];
7  size?: number;
8  track?: string;
9};
10 
11function SquareAccordion({
12  className,
13  blocks = SQUARE_ACCORDION_BLOCKS,
14  size = 5,
15  track = "░",
16  style,
17  ...props
18}: SquareAccordionProps) {
19  const cells = Math.max(2, Math.floor(size));
20  const glyphs = SQUARE_ACCORDION_BLOCKS.map(
21    (_, index) => blocks[index] ?? SQUARE_ACCORDION_BLOCKS[index],
22  );
23  const gridCells = Array.from({ length: cells * cells }, (_, index) => {
24    const row = Math.floor(index / cells);
25    const col = index % cells;
26 
27    return row === 0 || row === cells - 1 || col === 0 || col === cells - 1
28      ? track
29      : " ";
30  });
31 
32  return (
33    <>
34      <style>{`
35        @keyframes loading-ui-square-accordion {
36          0% {
37            transform: translate(0, 0);
38          }
39 
40          15%,
41          25% {
42            transform: translate(var(--loader-x), 0);
43          }
44 
45          40%,
46          50% {
47            transform: translate(var(--loader-x), var(--loader-y));
48          }
49 
50          65%,
51          75% {
52            transform: translate(0, var(--loader-y));
53          }
54 
55          90%,
56          100% {
57            transform: translate(0, 0);
58          }
59        }
60      `}</style>
61      <span
62        role="status"
63        className={cn(
64          "relative inline-flex h-[var(--loader-size)] w-[var(--loader-size)] overflow-hidden font-mono text-xl leading-none text-current select-none",
65          className,
66        )}
67        style={
68          {
69            "--loader-size": `${cells}ch`,
70            "--loader-x": `${cells - 1}ch`,
71            "--loader-y": `${cells - 1}ch`,
72            ...style,
73          } as React.CSSProperties
74        }
75        {...props}
76      >
77        <span
78          aria-hidden="true"
79          className="pointer-events-none absolute inset-0 grid"
80          style={{
81            gridTemplateColumns: `repeat(${cells}, 1ch)`,
82            gridTemplateRows: `repeat(${cells}, 1ch)`,
83          }}
84        >
85          {gridCells.map((glyph, index) => (
86            <span
87              key={index}
88              className="flex h-[1ch] w-[1ch] items-center justify-center"
89            >
90              {glyph}
91            </span>
92          ))}
93        </span>
94        {glyphs.map((glyph, index) => (
95          <span
96            key={`${glyph}-${index}`}
97// … truncated