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Darkens web pages without changing the funcionality of a page. Improve night reading.
// ==UserScript==
// @name Darken Website
// @namespace https://theusaf.org
// @version 1.0.2
// @description Darkens web pages without changing the funcionality of a page. Improve night reading.
// @author theusaf
// @icon https://www.google.com/s2/favicons?sz=64&domain=x.com
// @match *://*/*
// @license MIT
// @grant none
// @noframes
// @run-at document-body
// ==/UserScript==
if (window.parent === window) {
const template = document.createElement("template");
template.innerHTML = `<div class="darken-website-usaf" style="
position: fixed;
top: 0;
z-index: 99999;
width: 100%;
height: 100%;
pointer-events: none;
background: black;
opacity: 0;
left: 0;
"></div>`;
const specialElements = new Set();
document.body.append(template.content.cloneNode(true));
if (sessionStorage.enableDark === "true") {
sessionStorage.enableDark = false;
toggleDark();
}
window.addEventListener("fullscreenchange", (e) => {
const { target } = e,
darkenApplies = !!target.querySelector(".darken-website-usaf");
if (!darkenApplies) {
if (document.fullscreenElement) {
// Entering full screen
if (target.tagName === "IFRAME" || target.tagName === "VIDEO") {
target.style.opacity = sessionStorage.enableDark == "true"
? 1 - (+localStorage.darkVal || 0.7)
: 1;
specialElements.add(target);
} else {
target.append(template.content.cloneNode(true));
toggleDark();
toggleDark();
}
} else {
// Exiting full screen
if (target.tagName === "IFRAME" || target.tagName === "VIDEO") {
target.style.opacity = "";
specialElements.delete(target);
} else {
target.querySelector(".darken-website-usaf")?.remove();
}
}
}
});
window.addEventListener("keydown", (e) => {
if (e.altKey && e.ctrlKey) {
switch (e.code) {
case "KeyC": {
changeDark();
e.preventDefault();
e.stopImmediatePropagation();
break;
}
case "KeyD": {
toggleDark();
e.preventDefault();
e.stopImmediatePropagation();
break;
}
}
}
});
function changeDark() {
const n = +prompt("Enter darkness value", localStorage.darkVal || 0.7);
if (!isNaN(n)) {
localStorage.darkVal = n || 0.7;
}
toggleDark();
toggleDark();
return true;
}
function toggleDark() {
let darks = document.querySelectorAll(".darken-website-usaf");
if (darks.length === 0) {
document.body.append(template.content.cloneNode(true));
darks = document.querySelectorAll(".darken-website-usaf");
}
for (let i = 0; i < darks.length; i++) {
// Toggle darkness
darks[i].style.opacity = sessionStorage.enableDark == "true"
? 0
: +localStorage.darkVal || 0.7;
}
sessionStorage.enableDark =
sessionStorage.enableDark == "true" ? false : true;
return true;
}
} else {
console.log("[DARKEN] - Ignoring frame");
}