// ==UserScript==
// @name TopAndDownButtonsEverywhere
// @namespace https://greasyfork.org/en/users/28298
// @description Top and Down buttons everywhere
// @version 1.71
// @author 2018++ Jerry, 2018+ Volkan K., 2014-2016 Max Max
// @license GPL-3.0-or-later; http://www.gnu.org/licenses/gpl-3.0.txt
// @include *
// @run-at document-end
// @grant unsafeWindow
// @require https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/jquery-scrollTo/2.1.2/jquery.scrollTo.min.js
// ==/UserScript==
var RANDOM=Math.floor(Math.random()*1234567890);
// [1] skip all iframe
if (window.self != window.top) {
return
}
// create element
function ce(n) {
return $('<' + n + '>')[0];
} // end of function
// add style
function addStyle(css) {
var head = $('head')[0];
if (head) {
var style = ce("style");
style.type = "text/css";
style.appendChild(document.createTextNode(css));
head.appendChild(style);
} // end if
} // end of function
// global variables
var position,
// figure out if this is moz || IE because they use documentElement
el = document.documentElement || document.body,
// timer
t1, t2,
// speed by
speed_by_click = 500, // edit this value
speed_by_over = 100, // edit this value
// z-index
zIindex = 1001; // edit this value
// move up
function move_up() {
position = document.documentElement.scrollTop || document.body.scrollTop;
window.scrollTo(0, position - 1);
t1 = setTimeout(move_up, speed_by_over);
} // end of function
// move downn
function move_dn() {
position = document.documentElement.scrollTop || document.body.scrollTop;
window.scrollTo(0, position + 1);
t2 = setTimeout(move_dn, speed_by_over);
} // end of function
function goto_up () {
scrollTo(el, 0, speed_by_click);
}
function goto_dn () {
scrollTo(el, getDocumentHeight(), speed_by_click);
}
// document height
function getDocumentHeight() {
var body = $('body')[0];
return (body.scrollHeight > body.offsetHeight) ? body.scrollHeight : body.offsetHeight;
} // end of function
// document scroll
function get_scroll(a) {
var d = document,
b = d.body,
e = d.documentElement,
c = "client" + a,
a = "scroll" + a;
return /CSS/.test(d.compatMode) ? (e[c] < e[a]) : (b[c] < b[a])
} // end of function
function scrollTo(element, to, duration) {
return $(element).scrollTo(to,duration);
}
// add css
function shareCSS() {
// variables
var s = '',
img_up, img_dn;
// img vs button
img_up = 'data:img/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAAUCAYAAACAl21KAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAB+SURBVDhPY1i1atV/amAGahgCMoNhaIGlS5cKAp19BoRBbLJcj2QILDJINwzoAmMgfoclIkBixkS5DI8hMJcRNgxoSBoOl6CnNZBhaVhdBjWE1MSJahjQkA4KEmYH2GUrV66cSYEhYB+AzKBtFiHkQqKiH6Ro1CDCQTWgYQQAs81DU0G/83sAAAAASUVORK5CYII=';
img_dn = 'data:img/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAAUCAYAAACAl21KAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACPSURBVDhPY2DAAlatWvUfH8amB6vYqEGEg2pgw4iQ7cTKM6xcuXImsYpxqQOZAQ4woIIOCgzrQAl1oEFpZBiWhitFgwx7R4SBIDXYDYGZDFRgTMAwkCHGhBMRJMxwGUa8ITCbli5dKgg08AySN8+AxIhyCboiJMPIN4Qsm6miiYioxltawvSDYogohYTUAQC80UNTOht/YwAAAABJRU5ErkJggg==';
// button id
s += '#play_btn_up'+RANDOM+' { position:fixed; right:45%; bottom:90%;z-index:' + zIindex + '; height:50px; width:10%; cursor:pointer; background:url(' + img_up + ') no-repeat scroll 50% 50% rgba(0, 0, 0, 0.7); border-radius:5px 5px 5px 5px; margin-top:-24px; }';
s += '#play_btn_dn'+RANDOM+' { position:fixed; right:45%; top:90%; z-index:' + zIindex + '; height:50px; width:10%; cursor:pointer; background:url(' + img_dn + ') no-repeat scroll 50% 50% rgba(0, 0, 0, 0.7); border-radius:5px 5px 5px 5px; margin-top:-24px; }';
// button class
s += '.play_btn'+RANDOM+' { -webkit-transition-duration:0.5s linear; -o-transition-duration:0.5s linear; -moz-transition-duration:0.5s linear; transition-duration:0.5s linear; opacity:0.01; }';
s += '.play_btn'+RANDOM+':hover { opacity:1; }';
// append
addStyle('' + s);
} // end of function
// main
function create_btn_element() {
// get scroll
var up, dn,
scrolled,
h = get_scroll('Height');
// exit
if (!h) {
return;
} // end if
// add css
shareCSS();
// if
if (el) {
// create DOM element
up = ce('span');
dn = ce('span');
// set attribute
up.setAttribute('id', 'play_btn_up'+RANDOM);
dn.setAttribute('id', 'play_btn_dn'+RANDOM);
// set class
up.className = "play_btn"+RANDOM;
dn.className = "play_btn"+RANDOM;
// append element
document.body.appendChild(up);
document.body.appendChild(dn);
// scroll
scrolled = window.pageYOffset || document.documentElement.scrollTop;
// if scroll
up.style.display = (scrolled > 0) ? "" : "none";
// add event over
up.addEventListener('mouseover', move_up, false);
dn.addEventListener('mouseover', move_dn, false);
// add event out
up.addEventListener('mouseout', function() {
clearTimeout(t1);
}, false);
dn.addEventListener('mouseout', function() {
clearTimeout(t2);
}, false);
// add event click
up.addEventListener('click', goto_up, false);
dn.addEventListener('click', goto_dn, false);
// add event scroll
window.onscroll = function() {
var scrolled = window.pageYOffset || document.documentElement.scrollTop,
diffHeight = document.body.scrollHeight - window.innerHeight;
// if scroll up
up.style.display = (scrolled > 0) ? "" : "none";
// if scroll dn
dn.style.display = (diffHeight > scrolled) ? "" : "none";
}; // end of function
} // end if
} // end of function
// run it
create_btn_element();
