Set the default viewing mode to Theater Mode.
As of
// ==UserScript==
// @name YouTube - Always Theater Mode
// @namespace r-a-y/youtube/theater
// @description Set the default viewing mode to Theater Mode.
// @include http://www.youtube.com/watch*
// @include https://www.youtube.com/watch*
// @version 1.3.1
// @run-at document-start
// @grant none
// @license GPL v3
// ==/UserScript==
// Ensure unsafeWindow object is available both in firefox and chrome
//
// Props Anon via YouTube Cinema Mode userscript
// https://greasyfork.org/en/scripts/10417-youtube-cinema-mode
function installUnsafewindowPolyfill()
{
if (typeof unsafeWindow === 'undefined')
{
if (typeof XPCNativeWrapper === 'function' && typeof XPCNativeWrapper.unwrap === 'function')
unsafeWindow = XPCNativeWrapper.unwrap(window);
else if (window.wrappedJSObject)
unsafeWindow = window.wrappedJSObject;
}
}
// Disable SPF (Structured Page Fragments), which prevents properly attaching to page load events when navigation occurs
// Will also disable the red loading bar.
//
// Props Anon via YouTube Cinema Mode userscript
// https://greasyfork.org/en/scripts/10417-youtube-cinema-mode
function disableSPF()
{
if (unsafeWindow._spf_state && unsafeWindow._spf_state.config)
{
unsafeWindow._spf_state.config['navigate-limit'] = 0;
unsafeWindow._spf_state.config['navigate-part-received-callback'] = function (targetUrl) { location.href = targetUrl; }
}
setTimeout(disableSPF, 50);
}
// flash + html5 requires manually resizing the stage
function resizeStage() {
document.getElementById('page').className = "watch watch-stage-mode";
document.getElementById('player').className = "content-alignment watch-medium";
document.getElementById('watch7-container').className = "watch-wide";
// handle playlists
var playlist = document.getElementById('watch-appbar-playlist');
if (playlist) {
playlist.setAttribute('style', 'top:520px');
}
}
// html5 requires other tomfoolery
function html5() {
var video = document.querySelector('video');
if (video) {
document.querySelector('.html5-video-content').setAttribute('style', 'width:100% !important; height:100% !important;');
document.querySelector('.html5-video-container').setAttribute('style', 'position:static');
var button = document.querySelector('.ytp-size-toggle-large');
// new html5 player
if ( ! button ) {
button = document.querySelector('.ytp-size-button');
}
// emulate clicking on the "Theater Mode" button for HTML5 progressbar to expand
button.click();
}
}
/** TIME FOR SOME ACTION! **/
// get rid of SPF
installUnsafewindowPolyfill();
disableSPF();
// resize after document is loaded
window.addEventListener ("load", function() {
resizeStage();
html5();
});