Add up/down navigation buttons with options for transparency
// ==UserScript==
// @name scroll up and down buttons
// @namespace http://tampermonkey.net/
// @version 1.7.1
// @description Add up/down navigation buttons with options for transparency
// @author the pie stealer
// @match *://*/*
// @grant GM_registerMenuCommand
// @grant GM_unregisterMenuCommand
// @grant GM_setValue
// @grant GM_getValue
// @license Apache 2.0
// ==/UserScript==
(function () {
'use strict';
if (window.top !== window.self) return;
if (document.body && document.body.children.length === 1) {
const tag = document.body.children[0].tagName.toLowerCase();
if (['img', 'video', 'audio', 'embed', 'object'].includes(tag)) return;
}
const STORAGE_KEY_ENABLED = 'scrollButtons_enabled';
let isScriptEnabled = GM_getValue(STORAGE_KEY_ENABLED, true);
let menuCmdId = null;
let scrollAnimationId = null;
let isTemporarilyHidden = false;
function stopScrolling() {
if (scrollAnimationId) {
cancelAnimationFrame(scrollAnimationId);
scrollAnimationId = null;
}
}
['mousedown', 'wheel', 'DOMMouseScroll', 'mousewheel', 'keydown', 'touchstart'].forEach(evt =>
document.addEventListener(evt, stopScrolling, { passive: true })
);
function smoothScrollTo(targetY) {
if (scrollAnimationId) cancelAnimationFrame(scrollAnimationId);
const startY = window.scrollY;
const distance = targetY - startY;
const duration = 800; // change this to 1000 or whatever higher scroll speed value you want if this current scroll speed value is scrolling the web page too fast for you
const startTime = performance.now();
function step(currentTime) {
const timeElapsed = currentTime - startTime;
const progress = Math.min(timeElapsed / duration, 1);
const ease = progress < 0.5 ? 2 * progress * progress : -1 + (4 - 2 * progress) * progress;
window.scrollTo(0, startY + (distance * ease));
if (progress < 1) scrollAnimationId = requestAnimationFrame(step);
else scrollAnimationId = null;
}
scrollAnimationId = requestAnimationFrame(step);
}
const style = document.createElement('style');
style.innerHTML = `
:root {
--sb-bg: rgba(30, 30, 30);
--sb-hover: rgba(50, 50, 50, 0.96);
--sb-text: #ffffff;
--sb-glass-border: 1px solid rgba(255, 255, 255, 0.1);
--sb-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
--sb-blur: blur(10px);
}
.sb-container {
position: fixed;
bottom: 13px;
right: 13px;
display: flex;
flex-direction: column;
gap: 5px;
z-index: 2147483647;
transition: opacity 0.3s ease, transform 0.3s ease;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.sb-btn {
width: 37px;
height: 37px;
background: var(--sb-bg);
backdrop-filter: var(--sb-blur);
-webkit-backdrop-filter: var(--sb-blur);
border: var(--sb-glass-border);
color: var(--sb-text);
border-radius: 50%;
cursor: pointer;
font-size: 20px;
display: flex;
align-items: center;
justify-content: center;
box-shadow: var(--sb-shadow);
transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
outline: none;
user-select: none;
}
.sb-btn:hover {
background: var(--sb-hover);
transform: translateY(-2px);
box-shadow: 0 6px 16px rgba(0,0,0,0.4);
}
.sb-btn:active {
transform: scale(0.95);
}
.sb-btn.sb-transparent { opacity: 0 !important; pointer-events: none; }
.sb-container:hover .sb-btn.sb-transparent { opacity: 1 !important; pointer-events: auto; }
.sb-panel {
position: fixed;
bottom: 30px;
right: 90px;
width: 240px;
background: rgba(20, 20, 20, 0.9);
backdrop-filter: blur(12px);
-webkit-backdrop-filter: blur(12px);
border: var(--sb-glass-border);
border-radius: 16px;
padding: 20px;
color: #eee;
display: none;
flex-direction: column;
gap: 15px;
box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
z-index: 2147483647;
font-size: 14px;
transform-origin: bottom right;
animation: sb-fade-in 0.2s ease-out;
}
@keyframes sb-fade-in {
from { opacity: 0; transform: scale(0.9) translateY(10px); }
to { opacity: 1; transform: scale(1) translateY(0); }
}
.sb-panel-header {
display: flex;
justify-content: space-between;
align-items: center;
font-weight: 600;
font-size: 16px;
margin-bottom: 5px;
color: var(--sb-accent);
}
.sb-close {
cursor: pointer;
opacity: 0.6;
font-size: 30px;
transition: opacity 0.2s;
}
.sb-close:hover { opacity: 1; color: #ff5f5f; }
.sb-row {
display: flex;
justify-content: space-between;
align-items: center;
}
.sb-input {
width: 50px;
background: rgba(255,255,255,0.1);
border: 1px solid rgba(255,255,255,0.2);
border-radius: 6px;
color: white;
padding: 4px 8px;
text-align: center;
font-size: 13px;
}
.sb-input:focus {
outline: none;
border-color: var(--sb-accent);
background: rgba(255,255,255,0.15);
}
.sb-action-btn {
width: 100%;
padding: 8px;
background: var(--sb-accent);
color: white;
border: none;
border-radius: 8px;
cursor: pointer;
font-weight: 500;
margin-top: 5px;
background-color: #4a90e2;
transition: background 0.2s;
}
.sb-action-btn:hover { background: #black; }
.sb-switch {
position: relative;
display: inline-block;
width: 40px;
height: 22px;
}
.sb-switch input { opacity: 0; width: 0; height: 0; }
.sb-slider {
position: absolute;
cursor: pointer;
top: 0; left: 0; right: 0; bottom: 0;
background-color: #555;
transition: .4s;
border-radius: 34px;
}
.sb-slider:before {
position: absolute;
content: "";
height: 16px;
width: 16px;
left: 3px;
bottom: 3px;
background-color: white;
transition: .4s;
border-radius: 50%;
}
.sb-switch input:checked + .sb-slider { background-color: #4a90e2; }
.sb-switch input:checked + .sb-slider:before { transform: translateX(18px); }
.sb-hr {
border: 0;
height: 1px;
background: rgba(255, 255, 255, 0.1);
margin: 5px 0;
}
`;
const container = document.createElement('div');
container.className = 'sb-container';
const createBtn = (html, title, onClick) => {
const btn = document.createElement('button');
btn.className = 'sb-btn';
btn.innerHTML = html;
btn.title = title;
btn.addEventListener('click', (e) => {
e.stopPropagation();
onClick(e);
});
return btn;
};
const upBtn = createBtn(
'<svg viewBox="0 0 24 24" width="24" height="24" fill="currentColor"><path d="M7.41 15.41L12 10.83l4.59 4.58L18 14l-6-6-6 6z"/></svg>',
'Scroll to Top',
() => smoothScrollTo(0)
);
const downBtn = createBtn(
'<svg viewBox="0 0 24 24" width="24" height="24" fill="currentColor"><path d="M7.41 8.59L12 13.17l4.59-4.58L18 10l-6 6-6-6z"/></svg>',
'Scroll to Bottom',
() => smoothScrollTo(document.documentElement.scrollHeight)
);
const settingsBtn = createBtn(
'<svg viewBox="0 0 24 24" width="20" height="20" fill="currentColor"><path d="M19.14 12.94c.04-.3.06-.61.06-.94 0-.32-.02-.64-.07-.94l2.03-1.58c.18-.14.23-.41.12-.61l-1.92-3.32c-.12-.22-.37-.29-.59-.22l-2.39.96c-.5-.38-1.03-.7-1.62-.94l-.36-2.54c-.04-.24-.24-.41-.48-.41h-3.84c-.24 0-.43.17-.47.41l-.36 2.54c-.59.24-1.13.57-1.62.94l-2.39-.96c-.22-.08-.47 0-.59.22L2.74 8.87c-.12.21-.08.47.12.61l2.03 1.58c-.05.3-.09.63-.09.94s.02.64.07.94l-2.03 1.58c-.18.14-.23.41-.12.61l1.92 3.32c.12.22.37.29.59.22l2.39-.96c.5.38 1.03.7 1.62.94l.36 2.54c.05.24.24.41.48.41h3.84c.24 0 .44-.17.47-.41l.36-2.54c.59-.24 1.13-.56 1.62-.94l2.39.96c.22.08.47 0 .59-.22l1.92-3.32c.12-.22.07-.47-.12-.61l-2.01-1.58zM12 15.6c-1.98 0-3.6-1.62-3.6-3.6s1.62-3.6 3.6-3.6 3.6 1.62 3.6 3.6-1.62 3.6-3.6 3.6z"/></svg>',
'Settings',
() => {
const isFlex = settingsPanel.style.display === 'flex';
settingsPanel.style.display = isFlex ? 'none' : 'flex';
}
);
container.append(upBtn, settingsBtn, downBtn);
const settingsPanel = document.createElement('div');
settingsPanel.className = 'sb-panel';
const header = document.createElement('div');
header.className = 'sb-panel-header';
header.innerHTML = `<span>Settings</span><span class="sb-close">×</span>`;
header.querySelector('.sb-close').onclick = () => settingsPanel.style.display = 'none';
settingsPanel.appendChild(header);
const timerRow = document.createElement('div');
timerRow.className = 'sb-row';
timerRow.innerHTML = `<span>Hide duration (s)</span>`;
const timerInput = document.createElement('input');
timerInput.type = 'number';
timerInput.className = 'sb-input';
timerInput.min = '1';
timerInput.value = '5';
timerRow.appendChild(timerInput);
settingsPanel.appendChild(timerRow);
const hideBtn = document.createElement('button');
hideBtn.className = 'sb-action-btn';
hideBtn.innerText = 'Start Temporary Hide';
hideBtn.onclick = () => {
const seconds = parseInt(timerInput.value, 10) * 1000;
if (isNaN(seconds)) return;
removeUI();
isTemporarilyHidden = true;
setTimeout(() => {
isTemporarilyHidden = false;
addUI();
}, seconds);
};
settingsPanel.appendChild(hideBtn);
settingsPanel.appendChild(document.createElement('div')).className = 'sb-hr';
const transpRow = document.createElement('div');
transpRow.className = 'sb-row';
transpRow.innerHTML = `<span>transparency toggle</span>`;
const switchLabel = document.createElement('label');
switchLabel.className = 'sb-switch';
const switchInput = document.createElement('input');
switchInput.type = 'checkbox';
const switchSlider = document.createElement('span');
switchSlider.className = 'sb-slider';
switchLabel.append(switchInput, switchSlider);
transpRow.appendChild(switchLabel);
settingsPanel.appendChild(transpRow);
const STORAGE_KEY_TRANSP = 'scrollBtn_transparency';
const buttons = [upBtn, downBtn, settingsBtn];
function applyTransparency(isTransparent) {
switchInput.checked = isTransparent;
buttons.forEach(btn => {
isTransparent ? btn.classList.add('sb-transparent') : btn.classList.remove('sb-transparent');
});
localStorage.setItem(STORAGE_KEY_TRANSP, isTransparent ? '1' : '0');
}
switchInput.addEventListener('change', () => applyTransparency(switchInput.checked));
const savedTransp = localStorage.getItem(STORAGE_KEY_TRANSP);
if (savedTransp === '1') applyTransparency(true);
function removeUI() {
if (container) container.remove();
if (settingsPanel) settingsPanel.remove();
if (style) style.remove();
}
function addUI() {
if (!isScriptEnabled) return;
if (!document.head.contains(style)) document.head.appendChild(style);
if (!document.body.contains(container)) document.body.appendChild(container);
if (!document.body.contains(settingsPanel)) document.body.appendChild(settingsPanel);
}
function toggleScript() {
isScriptEnabled = !isScriptEnabled;
GM_setValue(STORAGE_KEY_ENABLED, isScriptEnabled);
isScriptEnabled ? addUI() : removeUI();
updateMenuCommand();
}
function updateMenuCommand() {
if (menuCmdId !== null) GM_unregisterMenuCommand(menuCmdId);
menuCmdId = GM_registerMenuCommand(
isScriptEnabled ? "disable scroll buttons" : "enable scroll nuttons",
toggleScript
);
}
updateMenuCommand();
if (isScriptEnabled) addUI();
document.addEventListener('fullscreenchange', () => {
if (!isScriptEnabled) return;
container.style.display = document.fullscreenElement ? 'none' : 'flex';
});
const observer = new MutationObserver(() => {
if (!isScriptEnabled || isTemporarilyHidden) return;
addUI();
});
observer.observe(document.body, { childList: true, subtree: true });
})();