Cursor Trail
Motion and entrances @bhaskar Stars:0 Views:0
/*
* MIT License
*
* Copyright (c) 2026 Syed Subhan Uddin
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
// Cursor Trail from amicro by Syed Subhan Uddin
// https://github.com/Subhan-code/Amicro--Micro-transitions-/blob/main/registry/ui/cursor/cursor-trail.tsx
// MIT License, Copyright (c) 2026 Syed Subhan Uddin. Full licence: https://github.com/Subhan-code/Amicro--Micro-transitions-/blob/main/LICENSE
// Styled with Tailwind CSS. Needs: framer-motion
import React, { useEffect, useState } from 'react';
import { motion, useSpring } from 'framer-motion';
interface CursorTrailProps {
color?: string;
size?: number;
count?: number;
}
export function CursorTrail({
color = 'bg-blue-500',
size = 8,
count = 6,
}: CursorTrailProps) {
const [coords, setCoords] = useState({ x: 0, y: 0 });
const [isVisible, setIsVisible] = useState(false);
useEffect(() => {
const handleMouseMove = (e: MouseEvent) => {
setCoords({ x: e.clientX, y: e.clientY });
if (!isVisible) setIsVisible(true);
};
const handleMouseLeave = () => {
setIsVisible(false);
};
window.addEventListener('mousemove', handleMouseMove, { passive: true });
document.addEventListener('mouseleave', handleMouseLeave);
return () => {
window.removeEventListener('mousemove', handleMouseMove);
document.removeEventListener('mouseleave', handleMouseLeave);
};
}, [isVisible]);
// Create an array of springs, each following the one in front of it
return (
<>
{isVisible && Array.from({ length: count }).map((_, index) => {
// Higher index elements have more damping/delay
const springConfig = {
stiffness: 300 - index * 30,
damping: 25 + index * 2,
mass: 0.2 + index * 0.1,
};
return (
<TrailDot
key={index}
index={index}
coords={coords}
springConfig={springConfig}
size={size}
color={color}
count={count}
/>
);
})}
</>
);
}
interface TrailDotProps {
index: number;
coords: { x: number; y: number };
springConfig: { stiffness: number; damping: number; mass: number };
size: number;
color: string;
count: number;
}
function TrailDot({
index,
coords,
springConfig,
size,
color,
count,
}: TrailDotProps) {
const x = useSpring(coords.x, springConfig);
const y = useSpring(coords.y, springConfig);
useEffect(() => {
x.set(coords.x);
y.set(coords.y);
}, [coords, x, y]);
// Calculate size and opacity based on index (shrinking tail)
const dotSize = size * (1 - index / count);
const opacity = 1 - index / count;
return (
<motion.div
style={{
x,
y,
width: dotSize,
height: dotSize,
translateX: '-50%',
translateY: '-50%',
opacity,
}}
className={`fixed top-0 left-0 rounded-full pointer-events-none z-[9999] ${color}`}
/>
);
}