90 lines
2.5 KiB
TypeScript
90 lines
2.5 KiB
TypeScript
import React from "react";
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import { cx } from "twind/core";
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function CounterDigit(props: { value: number; transitionDurationMs?: number | undefined }) {
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const { value, transitionDurationMs = 1500 } = props;
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const rads = -(Math.floor(value) % 1_000_000) * 2 * Math.PI * 0.1;
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return (
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<span className="w-[1em] relative">
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{Array.from({ length: 10 }).map((_, i) => (
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<span
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key={i}
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className="absolute inset-0 grid place-items-center transition-transform duration-1000 ease-in-out [backface-visibility:hidden]"
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style={{
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transform: `rotateX(${rads + i * 2 * Math.PI * 0.1}rad)`,
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transformOrigin: `center center 2em`,
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transitionDuration: `${transitionDurationMs}ms`,
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}}
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>
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{i}
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</span>
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))}
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</span>
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);
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}
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const Spacer = () =>
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<span className="border-l-1 mx-[0.1em] border-zinc-200 dark:border-zinc-700" />;
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const CounterText = (props: { children: React.ReactNode }) => (
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<span className="self-center px-[0.1em]">
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{props.children}
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</span>
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);
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export function Counter(props: {
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value: number;
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digits: number;
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fractionDigits?: number | undefined;
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transitionDurationMs?: number | undefined;
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className?: string | undefined;
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postfix?: string | undefined;
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}) {
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const { value, digits, fractionDigits = 0, transitionDurationMs, className, postfix } = props;
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return (
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<span
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className={cx(
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"inline-flex h-[1.5em] items-stretch border-1 border-zinc-300 dark:border-zinc-700 shadow-inner rounded-md overflow-hidden",
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className,
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)}
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>
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{Array.from({ length: digits })
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.flatMap((_, i) => [
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i > 0 && i % 3 === 0 ? <Spacer key={`spacer${i}`} /> : null,
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<CounterDigit
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key={`digit${i}`}
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value={value / 10 ** i}
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transitionDurationMs={transitionDurationMs}
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/>,
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])
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.reverse()}
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{fractionDigits > 0 && (
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<>
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<Spacer />
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<CounterText>.</CounterText>
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<Spacer />
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{Array.from({ length: fractionDigits })
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.flatMap((_, i) => [
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i > 0 && i % 3 === 0 ? <Spacer key={`fractionSpacer${i}`} /> : null,
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<CounterDigit
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key={`fractionDigit${i}`}
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value={value * 10 ** (i + 1)}
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transitionDurationMs={transitionDurationMs}
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/>,
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])}
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</>
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)}
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{postfix && (
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<>
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<Spacer />
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<CounterText>{postfix}</CounterText>
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</>
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)}
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</span>
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);
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}
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