"use client"; import React, { useRef, useEffect, useMemo } from "react"; interface HoverGlitchProps { text: string; fontFamily?: string; fontSize?: string; fontWeight?: number; color?: string; baseIntensity?: number; hoverIntensity?: number; letterSpacing?: string; wordSpacing?: string; } const HoverGlitch: React.FC = ({ text, fontFamily = "'Major Mono Display', monospace", fontSize = "10rem", fontWeight = 400, color = "#33ffcc", baseIntensity = 1, hoverIntensity = 15, letterSpacing = "0px", wordSpacing = "0px", }) => { const canvasRef = useRef(null); const animationFrameId = useRef(null); const currentIntensity = useRef(baseIntensity); const font = useMemo( () => `${fontWeight} ${fontSize} ${fontFamily}`, [fontWeight, fontSize, fontFamily] ); useEffect(() => { currentIntensity.current = baseIntensity; const canvas = canvasRef.current; if (!canvas) return; const ctx = canvas.getContext("2d", { willReadFrequently: true }); if (!ctx) return; let isCancelled = false; const offscreenCanvas = document.createElement("canvas"); const offscreenCtx = offscreenCanvas.getContext("2d", { willReadFrequently: true, }); if (!offscreenCtx) return; const setupAndAnimate = async () => { await document.fonts.ready; if (isCancelled) return; offscreenCtx.font = font; const metrics = offscreenCtx.measureText(text); const textWidth = Math.ceil(metrics.width); const textHeight = Math.ceil( metrics.actualBoundingBoxAscent + metrics.actualBoundingBoxDescent ); const horizontalPadding = hoverIntensity * 2; const verticalPadding = 20; const canvasWidth = textWidth + horizontalPadding; const canvasHeight = textHeight + verticalPadding; canvas.width = offscreenCanvas.width = canvasWidth; canvas.height = offscreenCanvas.height = canvasHeight; offscreenCtx.font = font; offscreenCtx.fillStyle = color; offscreenCtx.textBaseline = "top"; offscreenCtx.fillText(text, horizontalPadding / 2, verticalPadding / 2); const sourceImageData = offscreenCtx.getImageData( 0, 0, canvasWidth, canvasHeight ); const sourcePixels = sourceImageData.data; const renderLoop = () => { if (isCancelled || !ctx) return; const destinationImageData = ctx.createImageData( canvasWidth, canvasHeight ); const destinationPixels = destinationImageData.data; for (let y = 0; y < canvasHeight; y++) { const rowOffset = (Math.random() - 0.5) * currentIntensity.current; for (let x = 0; x < canvasWidth; x++) { const sourceX = Math.round(x + rowOffset); if (sourceX >= 0 && sourceX < canvasWidth) { const destIndex = (y * canvasWidth + x) * 4; const sourceIndex = (y * canvasWidth + sourceX) * 4; destinationPixels[destIndex] = sourcePixels[sourceIndex]; destinationPixels[destIndex + 1] = sourcePixels[sourceIndex + 1]; destinationPixels[destIndex + 2] = sourcePixels[sourceIndex + 2]; destinationPixels[destIndex + 3] = sourcePixels[sourceIndex + 3]; } } } ctx.clearRect(0, 0, canvasWidth, canvasHeight); ctx.putImageData(destinationImageData, 0, 0); animationFrameId.current = requestAnimationFrame(renderLoop); }; renderLoop(); }; const handleMouseEnter = () => { currentIntensity.current = hoverIntensity; }; const handleMouseLeave = () => { currentIntensity.current = baseIntensity; }; const handleTouchStart = () => { currentIntensity.current = hoverIntensity; }; const handleTouchEnd = () => { currentIntensity.current = baseIntensity; }; canvas.addEventListener("mouseenter", handleMouseEnter); canvas.addEventListener("mouseleave", handleMouseLeave); canvas.addEventListener("touchstart", handleTouchStart, { passive: true }); canvas.addEventListener("touchend", handleTouchEnd, { passive: true }); setupAndAnimate(); return () => { isCancelled = true; if (animationFrameId.current) { cancelAnimationFrame(animationFrameId.current); } canvas.removeEventListener("mouseenter", handleMouseEnter); canvas.removeEventListener("mouseleave", handleMouseLeave); canvas.removeEventListener("touchstart", handleTouchStart); canvas.removeEventListener("touchend", handleTouchEnd); }; }, [ text, font, color, baseIntensity, hoverIntensity, letterSpacing, wordSpacing, ]); return

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