Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | 19x 19x 19x | import React, { ReactElement, useEffect, useRef, useState } from "react";
export const CountDown = ({
startTime,
currentProgress,
isPlaying,
size = 32,
strokeWidth = 3,
color = "#ffffff",
}: {
startTime: number;
currentProgress: number;
isPlaying: boolean;
size?: number;
strokeWidth?: number;
color?: string;
}): ReactElement | null => {
const radius = size / 2 - strokeWidth / 2;
const circumference = 2 * Math.PI * radius;
const circleRef = useRef<SVGCircleElement>(null);
const animationRef = useRef<number>(null);
const progressRef = useRef(currentProgress);
const lastTimeRef = useRef<number>(null);
const [countdownNumber, setCountdownNumber] = useState<number | null>(null);
const updateCircle = () => {
Iif (!circleRef.current) return;
const remainingTime = startTime - progressRef.current;
const totalDuration = startTime;
const progress = Math.max(0, Math.min(1, remainingTime / totalDuration));
const dashOffset = circumference * (1 - progress);
circleRef.current.style.strokeDashoffset = dashOffset.toString();
if (progress < 0.1) {
circleRef.current.style.opacity = (progress * 10).toString(); // Fade out in last 10%
} else {
circleRef.current.style.opacity = "1";
}
const remainingSeconds = Math.ceil(remainingTime / 1000);
if (remainingSeconds <= 3 && remainingSeconds > 0) {
setCountdownNumber(remainingSeconds);
} else {
setCountdownNumber(null);
}
Iif (progress <= 0) {
return false;
}
return true;
};
useEffect(() => {
progressRef.current = currentProgress;
updateCircle();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [currentProgress, startTime]);
useEffect(() => {
const animate = (time: number) => {
Iif (lastTimeRef.current && isPlaying) {
const deltaTime = time - lastTimeRef.current;
progressRef.current += deltaTime;
}
lastTimeRef.current = time;
Iif (updateCircle()) {
animationRef.current = requestAnimationFrame(animate);
}
};
Iif (isPlaying) {
lastTimeRef.current = performance.now();
animationRef.current = requestAnimationFrame(animate);
}
return () => {
Iif (animationRef.current) {
cancelAnimationFrame(animationRef.current);
}
};
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [isPlaying]);
const fontSize = Math.max(size * 0.3, 12);
return (
<div className="countdown-container" style={{ width: size, height: size }}>
<svg
style={{ width: "100%", height: "100%" }}
viewBox={`0 0 ${size} ${size}`}
>
<circle
ref={circleRef}
cx={size / 2}
cy={size / 2}
r={radius}
fill="none"
stroke={color}
strokeWidth={strokeWidth}
strokeDasharray={circumference}
strokeDashoffset="0"
transform={`rotate(-90 ${size / 2} ${size / 2})`}
strokeLinecap="round"
/>
{countdownNumber !== null && (
<text
x={size / 2}
y={size / 2 + fontSize / 6}
textAnchor="middle"
dominantBaseline="middle"
fill={color}
fontSize={fontSize}
fontWeight="bold"
>
{countdownNumber}
</text>
)}
</svg>
</div>
);
};
export default CountDown;
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