// ==UserScript==
// @name             April Fools CSS
// @description      Some CSS april fools
// @author           jerone
// @namespace        https://github.com/jerone/UserScripts/tree/master/April_Fools_CSS
// @copyright        2014+, jerone (https://github.com/jerone)
// @license          CC-BY-NC-SA-4.0; https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
// @license          GPL-3.0-or-later; http://www.gnu.org/licenses/gpl-3.0.txt
// @supportURL       https://github.com/jerone/UserScripts/issues
// @contributionURL  https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=VCYMHWQ7ZMBKW
// @include          *
// @version          1.0
// ==/UserScript==
// cSpell:ignore transform, aprilfool
/* eslint security/detect-object-injection: "off" */
if (window.top === window) {
var duration = 2000, // [Integer, positive, milliseconds] This controls the duration of an april fool item;
interval = 8000; // [Integer, positive, milliseconds] This controls the interval of the next april fool;
// [String] April fools in CSS; Use {duration} for a dynamic duration;
var aprilFools = [
// editorconfig-checker-disable
"img {										\
-webkit-transform: rotate(180deg);		\
-moz-transform: rotate(180deg);		\
-ms-transform: rotate(180deg);		\
-o-transform: rotate(180deg);		\
transform: rotate(180deg);		\
}",
"body {										\
-webkit-transform: rotate(1deg);		\
-moz-transform: rotate(1deg);		\
-ms-transform: rotate(1deg);		\
-o-transform: rotate(1deg);		\
transform: rotate(1deg);		\
}",
"body {										\
-webkit-perspective: 300px; 			\
-moz-perspective: 300px; 			\
-ms-perspective: 300px; 			\
perspective: 300px;				\
-webkit-transform: rotateY(180deg);		\
-moz-transform: rotateY(180deg);		\
-ms-transform: rotateY(180deg);		\
transform: rotateY(180deg);		\
-webkit-transform-style: preserve-3d;	\
-moz-transform-style: preserve-3d;	\
-ms-transform-style: preserve-3d;	\
transform-style: preserve-3d;	\
}",
"img {										\
-webkit-transform: scale(0.8); 			\
-moz-transform: scale(0.8); 			\
-ms-transform: scale(0.8); 			\
-o-transform: scale(0.8); 			\
transform: scale(0.8); 				\
}",
"img { -webkit-animation: spin {duration}s linear infinite; }	\
@-webkit-keyframes spin {										\
0% { -webkit-transform: rotate(0deg); }					\
100% { -webkit-transform: rotate(360deg); }					\
}",
"body { -webkit-animation: rainbow {duration}s infinite; }		\
@-webkit-keyframes rainbow {									\
100% { -webkit-filter: hue-rotate(360deg); }				\
}",
// editorconfig-checker-enable
],
aprilFool = 0,
aprilFooled = 0;
interval = Math.abs(interval);
duration = Math.max(1000, Math.abs(duration));
window.setInterval(
function () {
do {
aprilFool = Math.floor(Math.random() * aprilFools.length);
} while (aprilFool === aprilFooled);
document.documentElement.classList.add(
"aprilfool" + (aprilFooled = aprilFool),
);
window.console && console.log("added aprilfool" + aprilFool);
window.setTimeout(function () {
document.documentElement.classList.remove(
"aprilfool" + aprilFooled,
);
window.console && console.log("removed aprilfool" + aprilFool);
}, duration);
},
interval + duration + 10,
);
for (var aprilFoolText in aprilFools) {
GM_addStyle(
".aprilfool" +
aprilFoolText +
" " +
aprilFools[aprilFoolText].replace(
"{duration}",
duration / 1000,
),
);
}
}