Live Reaction helper

This is a helper script to make the Live Page Reaction userscript work.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Live Reaction helper
// @namespace    http://tampermonkey.net/
// @version      2024-09-05
// @description  This is a helper script to make the Live Page Reaction userscript work.
// @author       Riedler
// @match        https://*/*
// @icon         https://riedler.wien/favicon.png
// @grant        none
// @license      CC0
// ==/UserScript==

(function() {
    'use strict';

    document.body.id = 'livereaction-mainbody'

    let overlayElement = document.createElement('DIV')
    overlayElement.id = 'livereaction-overlay'
    overlayElement.innerHTML = "<span>LIVE</span><span id='livereaction-cam1'></span><span>REACTION</span><div id='livereaction-cam2'></div>"
    overlayElement.style.backgroundColor = window.getComputedStyle(document.body, null).getPropertyValue('background-color')
    document.documentElement.appendChild(overlayElement)
    document.addEventListener('scroll',(_event)=>{
        let offset = document.scrollingElement.scrollTop;
        document.documentElement.style.setProperty('--scrollTop', offset + 'px')
    })
    const rO = new ResizeObserver((entries)=>{
        let height = document.body.clientHeight;
        document.documentElement.style.setProperty('--clientHeight', height + 'px')
    });
    rO.observe(document.body)

})();