Universal Google Sans のソースコード

Universal Google Sans

Apply Google Sans Universally
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// ==UserScript==
// @name        Universal Google Sans
// @namespace   Violentmonkey Script
// @description Apply Google Sans Universally
// @version     v1.0
// @match       *://*/*
// @author      iamhaunt
// @license     MIT
// @grant       GM_addStyle
// @grant       GM_getResourceURL
// @resource    myFont https://raw.githubusercontent.com/iamhaunt/greasy-fork-GoogleSans/main/GoogleSans-Regular.woff2
// @run-at      document-start
// ==/UserScript==

(function() {
    'use strict';

    const fontUrl = GM_getResourceURL('myFont');
    const fontName = 'CustomGoogleSans';

    const css = `
        @font-face {
            font-family: '${fontName}';
            src: url('${fontUrl}') format('woff2');
            font-display: swap;
        }
        *:not(i):not([class*="icon"]):not([class*="fa"]):not([class*="material-icons"]):not([class*="symbol"]):not(svg):not(path) {
            font-family: '${fontName}', sans-serif !important;
        }
    `;

    GM_addStyle(css);

    const inject = (t) => {
        if (!t || t.querySelector(`style[data-f="${fontName}"]`)) return;
        const s = document.createElement('style');
        s.setAttribute('data-f', fontName);
        s.textContent = css;
        t.appendChild(s);
    };

    const process = (n) => {
        if (n.nodeType !== 1) return;
        if (n.shadowRoot) inject(n.shadowRoot);
        const children = n.querySelectorAll('*');
        for (let i = 0; i < children.length; i++) {
            if (children[i].shadowRoot) inject(children[i].shadowRoot);
        }
    };

    new MutationObserver(ms => {
        for (let i = 0; i < ms.length; i++) {
            const added = ms[i].addedNodes;
            for (let j = 0; j < added.length; j++) process(added[j]);
        }
    }).observe(document.documentElement, { childList: true, subtree: true });

    process(document.documentElement);
})();