Dynamic Cursor

A dynamic cursor thingy

Tendrás que instalar una extensión para tu navegador como Tampermonkey, Greasemonkey o Violentmonkey si quieres utilizar este script.

You will need to install an extension such as Tampermonkey to install this script.

Tendrás que instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Userscripts para instalar este script.

Tendrás que instalar una extensión como Tampermonkey antes de poder instalar este script.

Necesitarás instalar una extensión para administrar scripts de usuario si quieres instalar este script.

(Ya tengo un administrador de scripts de usuario, déjame instalarlo)

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

(Ya tengo un administrador de estilos de usuario, déjame instalarlo)

// ==UserScript==
// @name         Dynamic Cursor
// @namespace    http://tampermonkey.net/
// @version      2026-01-20
// @description  A dynamic cursor thingy
// @author       pooiod7
// @include      *
// @grant GM_registerMenuCommand
// @grant GM_setValue
// @grant GM_getValue
// ==/UserScript==

// const s1332=document.createElement("style");
// s1332.textContent="button{transition:filter .5s}button:hover{filter:invert(1)}";
// document.head.appendChild(s1332);

(function() {
    if (window.DCurLoaded == true) return;
    window.DCurLoaded = true;

    var SETTINGS = {
        BASE_SIZE: { key: "size", def: "5", type: "number" },
        BASE_OPACITY: { key: "PointerOpacity", def: "0.9", type: "number" },
        OUTLINE_OPACITY: { key: "OutlineOpacity", def: "1", type: "number" },
        SELECT_OPACITY: { key: "SelectOpacity", def: "0.2", type: "number" },
        MOSTLY_OUTLINE: { key: "ForceOutline", def: false, type: "bool" },
        TEXT_CURSOR_WIDTH: { key: "TextPointerWidth", def: "2", type: "number" },
        OUTLINE_THICKNESS: { key: "OutlineThickness", def: "2", type: "number" },
        IGNORE_SITES: { key: "IgnoreSites", def: "example.com, studio.penguinmod.com, turbowarp.org", type: "text" }
    };

    var VALUES = {};
    Object.keys(SETTINGS).forEach(k => {
        VALUES[k] = GM_getValue(SETTINGS[k].key, SETTINGS[k].def);
    });

    var {
        BASE_SIZE,
        BASE_OPACITY,
        OUTLINE_OPACITY,
        SELECT_OPACITY,
        MOSTLY_OUTLINE,
        TEXT_CURSOR_WIDTH,
        OUTLINE_THICKNESS,
        IGNORE_SITES
    } = VALUES;

    Object.keys(SETTINGS).forEach(k => {
        let s = SETTINGS[k];
        let v = VALUES[k];
        GM_registerMenuCommand(`${k}: ${v}`, () => {
            let nv;
            if (s.type === "bool") {
                nv = confirm(`${k}: OK=true, Cancel=false`);
            } else {
                nv = prompt(`Set ${k}:`, v);
                if (nv === null) return;
                if (s.type === "number") nv = String(nv);
            }
            GM_setValue(s.key, nv);
            window.location.reload();
        });
    });

    var IGNORE_JSON = IGNORE_SITES.split(",").map(s => s.trim()).filter(Boolean);

    var IS_IGNORED = IGNORE_JSON.some(d => location.hostname === d || location.hostname.endsWith("." + d));
    if (IS_IGNORED) return;

    const Z_INDEX = '2147483647';
    var SMOOTH_DURATION = 200;

    const CLICKABLE_SELECTORS = 'a, button, input, textarea, select, details, [role="button"], [role="link"], g[id^="part-"]';
    const TEXT_INPUT_TYPES = ['text', 'password', 'email', 'number', 'search', 'tel', 'url', 'date', 'datetime-local', 'month', 'week', 'time'];

    const globalStyle = document.createElement('style');
    globalStyle.textContent = `*, html, body { cursor: none !important; }`;
    document.head.appendChild(globalStyle);

    const host = document.createElement('div');
    Object.assign(host.style, {
        position: 'fixed', top: '0', left: '0', width: '0', height: '0',
        zIndex: Z_INDEX, pointerEvents: 'none'
    });
    document.body.appendChild(host);

    const shadow = host.attachShadow({ mode: 'open' });

    const shadowStyle = document.createElement('style');
    shadowStyle.textContent = `
        .cursor {
            position: fixed; top: 0; left: 0;
            width: ${BASE_SIZE}px; height: ${BASE_SIZE}px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            backdrop-filter: invert(1);
            -webkit-backdrop-filter: invert(1);
            opacity: ${BASE_OPACITY};
            pointer-events: none;
            transform: translate3d(-50%, -50%, 0);
            box-sizing: border-box;
            will-change: transform, width, height, border-radius, padding;
            transition:
                width 0.2s cubic-bezier(0.25, 0.8, 0.25, 1),
                height 0.2s cubic-bezier(0.25, 0.8, 0.25, 1),
                border-radius 0.2s cubic-bezier(0.25, 0.8, 0.25, 1),
                opacity 0.2s ease,
                padding 0.2s ease,
                background-color 0.2s ease;
            -webkit-mask: none;
            mask: none;
        }
        .cursor.smooth-pos {
            transition:
                width 0.2s cubic-bezier(0.25, 0.8, 0.25, 1),
                height 0.2s cubic-bezier(0.25, 0.8, 0.25, 1),
                border-radius 0.2s cubic-bezier(0.25, 0.8, 0.25, 1),
                transform 0.2s cubic-bezier(0.25, 0.8, 0.25, 1),
                opacity 0.2s ease,
                padding 0.2s ease,
                background-color 0.2s ease;
        }
        .cursor.outline-mode {
            background-color: rgba(255, 255, 255, 0.5);
            padding: ${OUTLINE_THICKNESS}px;
            -webkit-mask: linear-gradient(#fff, #fff) content-box, linear-gradient(#fff, #fff);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }
        .cursor.text-mode {
            border-radius: 0 !important;
            background-color: rgba(255, 255, 255, 0.5);
        }
        .cursor.hidden { opacity: 0 !important; }
    `;
    shadow.appendChild(shadowStyle);

    const cursor = document.createElement('div');
    cursor.classList.add('cursor');
    shadow.appendChild(cursor);

    let mouseX = -100, mouseY = -100;
    let currentMode = 'idle';
    let smoothRemoveTimer = null;
    let freezeCursor = false;
    let freezeTarget = null;

    const isSVGWithImage = (el) => {
        if (el.tagName.toLowerCase() === 'svg') return !!el.querySelector('image');
        return false;
    };

    const hasImage = (el) => {
        if (el.tagName.toLowerCase() === 'img') return true;
        if (isSVGWithImage(el)) return true;
        if (el.querySelector('svg') && isSVGWithImage(el.querySelector('svg'))) return true;
        if (el.querySelector('img')) return true;
        const style = window.getComputedStyle(el);
        if (style.backgroundImage !== 'none' && style.backgroundImage.includes('url')) return true;
        return false;
    };

    const getTextLineHeight = (el) => {
        const style = window.getComputedStyle(el);
        const lh = parseFloat(style.lineHeight);
        const fs = parseFloat(style.fontSize);
        return isNaN(lh) ? fs * 1.2 : lh;
    };

    const getClickable = (target) => {
        const el = target.closest(CLICKABLE_SELECTORS);
        if (el) return el;
        let traverse = target;
        while (traverse && traverse !== document.body) {
            const style = window.getComputedStyle(traverse);
            if (style.cursor === 'pointer') return traverse;
            traverse = traverse.parentElement;
        }
        return null;
    };

    const isTextBox = (el) => {
        const tag = el.tagName;
        if (tag === 'TEXTAREA') return true;
        if (tag === 'INPUT') {
            const type = el.getAttribute('type') || 'text';
            return TEXT_INPUT_TYPES.includes(type.toLowerCase());
        }
        return false;
    };

    document.addEventListener('mousemove', (e) => {
        mouseX = e.clientX;
        mouseY = e.clientY;
    });

    document.addEventListener('mousedown', (e) => {
        const target = e.target.closest(CLICKABLE_SELECTORS);
        if (target) {
            freezeCursor = target.classList.contains('freeze-cursor');
            freezeTarget = freezeCursor ? target : null;
        }
    });

    document.addEventListener('mouseup', () => {
        freezeCursor = false;
        freezeTarget = null;
    });

    document.addEventListener('mouseleave', () => cursor.classList.add('hidden'));
    document.addEventListener('mouseenter', () => cursor.classList.remove('hidden'));

    function update() {
        let currentX = mouseX;
        let currentY = mouseY;

        if (freezeCursor && freezeTarget) {
            const rect = freezeTarget.getBoundingClientRect();
            currentX = rect.left + rect.width / 2;
            currentY = rect.top + rect.height / 2;
        }

        const elUnderPoint = document.elementFromPoint(currentX, currentY);
        const target = elUnderPoint ? getClickable(elUnderPoint) : null;

        let targetX = currentX;
        let targetY = currentY;
        let targetW = BASE_SIZE;
        let targetH = BASE_SIZE;
        let targetR = '50%';
        let mode = 'idle';
        let isOutline = false;

        if (target) {
            cursor.style.opacity = SELECT_OPACITY;
            const rect = target.getBoundingClientRect();
            const style = window.getComputedStyle(target);

            if (isTextBox(target)) {
                cursor.style.opacity = BASE_OPACITY;
                mode = 'text';
                targetW = TEXT_CURSOR_WIDTH;
                targetH = getTextLineHeight(target);
                targetR = '0px';
                targetX = currentX;
                targetY = currentY;
            } else {
                mode = 'snap';
                targetW = rect.width;
                targetH = rect.height;
                const cssR = parseFloat(style.borderRadius) || 0;
                targetR = Math.max(cssR, 2) + 'px';
                targetX = rect.left + (rect.width / 2);
                targetY = rect.top + (rect.height / 2);
                if (hasImage(target)) isOutline = true;
                if (MOSTLY_OUTLINE && !target.classList.contains('freeze-cursor')) isOutline = true;
                if (isOutline) cursor.style.opacity = OUTLINE_OPACITY;
            }
        } else {
            cursor.style.opacity = BASE_OPACITY;
        }

        if (mode === 'snap') {
            cursor.classList.add('smooth-pos');
            clearTimeout(smoothRemoveTimer);
            smoothRemoveTimer = null;
        } else if (currentMode === 'snap' && mode !== 'snap') {
            cursor.classList.add('smooth-pos');
            if (!smoothRemoveTimer) {
                smoothRemoveTimer = setTimeout(() => {
                    cursor.classList.remove('smooth-pos');
                    smoothRemoveTimer = null;
                }, SMOOTH_DURATION);
            }
        } else if (mode === 'text') {
            cursor.classList.remove('smooth-pos');
            clearTimeout(smoothRemoveTimer);
            smoothRemoveTimer = null;
        }

        if (mode === 'text') {
            cursor.classList.add('text-mode');
            cursor.classList.remove('outline-mode');
        } else {
            cursor.classList.remove('text-mode');
            if (isOutline) cursor.classList.add('outline-mode');
            else cursor.classList.remove('outline-mode');
        }

        cursor.style.width = `${targetW}px`;
        cursor.style.height = `${targetH}px`;
        cursor.style.borderRadius = targetR;
        cursor.style.transform = `translate3d(${targetX}px, ${targetY}px, 0) translate(-50%, -50%)`;

        currentMode = mode;
        requestAnimationFrame(update);
    }

    requestAnimationFrame(update);
})();