Add up/down navigation buttons with a settings panel (timer & transparency).
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// ==UserScript==
// @name scroll up and down buttons
// @namespace http://tampermonkey.net/
// @version 1.6.1
// @description Add up/down navigation buttons with a settings panel (timer & transparency).
// @author the pie stealer
// @match *://*/*
// @grant none
// @license Apache 2.0
// ==/UserScript==
(function () {
'use strict';
if (window.top !== window.self) return;
if (document.body && document.body.children.length === 1) {
const onlyChild = document.body.children[0];
const tag = onlyChild.tagName.toLowerCase();
if (['img', 'video', 'audio', 'embed', 'object'].includes(tag)) return;
}
let scrollAnimationId = null;
let isTemporarilyHidden = false;
function smoothScrollTo(targetY) {
if (scrollAnimationId) cancelAnimationFrame(scrollAnimationId);
const startY = window.scrollY;
const distance = targetY - startY;
const duration = 1000;
const startTime = performance.now();
function step(currentTime) {
const elapsed = currentTime - startTime;
const progress = Math.min(elapsed / 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);
}
function stopScroll() {
if (scrollAnimationId) {
cancelAnimationFrame(scrollAnimationId);
scrollAnimationId = null;
}
}
['mousedown', 'wheel', 'touchstart', 'keydown'].forEach(evt => {
window.addEventListener(evt, stopScroll, { passive: true });
});
const style = document.createElement('style');
style.textContent = `
.tm-scroll-container {
position: fixed;
bottom: 10px;
right: 10px;
display: flex;
flex-direction: column;
gap: 6px;
z-index: 9999999;
pointer-events: auto;
align-items: center;
}
.tm-scroll-btn {
width: 40px;
height: 40px;
padding: 0;
display: flex;
align-items: center;
justify-content: center;
border: none;
cursor: pointer;
box-shadow: 0 2px 6px rgba(0,0,0,0.3);
transition: background-color 0.2s, opacity 0.2s;
color: white;
font-size: 16px;
}
.tm-settings-btn {
width: 25px;
height: 25px;
font-size: 13px;
padding: 0;
display: flex;
align-items: center;
justify-content: center;
border: none;
cursor: pointer;
box-shadow: 0 2px 6px rgba(0,0,0,0.3);
transition: background-color 0.2s, opacity 0.2s;
color: white;
}
.tm-scroll-btn { background-color: #333; border-radius: 6px; }
.tm-settings-btn { background-color: #000; border-radius: 50%; font-size: 20px; }
.tm-scroll-btn.transparent, .tm-settings-btn.transparent { opacity: 0.1; }
.tm-settings-panel {
display: none;
position: fixed;
bottom: 110px;
right: 10px;
width: 250px;
background-color: #3a3a3a;
color: #f0f0f0;
padding: 15px;
border-radius: 8px;
box-shadow: 0 4px 12px rgba(0,0,0,0.4);
z-index: 10000000;
border: 1px solid #555;
}
.tm-settings-panel hr { border: none; border-top: 1px solid #555; margin: 15px 0; }
.tm-settings-panel-header {
display: flex; justify-content: space-between; align-items: center;
margin-bottom: 15px; font-size: 16px; font-weight: bold;
}
.tm-settings-panel-close {
background: none; border: none; color: #f0f0f0; font-size: 24px;
cursor: pointer; line-height: 1; padding: 0 5px;
}
.tm-settings-panel-content .setting { display: flex; flex-direction: column; gap: 8px; }
.tm-settings-panel-content .setting-row { display: flex; justify-content: space-between; align-items: center; }
.tm-settings-panel-content label { font-size: 14px; }
.tm-settings-panel-content input[type="text"] {
padding: 8px; border-radius: 4px; border: 1px solid #777;
background-color: #2c2c2c; color: white; font-family: monospace;
}
.tm-settings-panel-content input.error { border-color: #e57373; }
.tm-settings-panel-content button {
margin-top: 5px; padding: 8px 12px; border-radius: 4px; border: none;
cursor: pointer; background-color: #1a73e8; color: white; font-weight: bold;
}
.tm-settings-panel input::placeholder {
color: #E6858A;
}
.toggle-switch { position: relative; display: inline-block; width: 50px; height: 26px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.slider {
position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
background-color: #666; transition: .3s; border-radius: 26px;
}
.slider:before {
position: absolute; content: ""; height: 18px; width: 18px; left: 4px; bottom: 4px;
background-color: white; transition: .3s; border-radius: 50%;
}
input:checked + .slider { background-color: #1a73e8; }
input:checked + .slider:before { transform: translateX(24px); }
`;
document.head.appendChild(style);
const container = document.createElement('div');
container.className = 'tm-scroll-container';
const settingsBtn = document.createElement('button');
settingsBtn.className = 'tm-settings-btn';
settingsBtn.title = 'Open Settings';
settingsBtn.innerHTML = '⚙️';
const upBtn = document.createElement('button');
upBtn.className = 'tm-scroll-btn';
upBtn.textContent = '▲';
upBtn.title = 'Scroll to top';
upBtn.onclick = () => smoothScrollTo(0);
const downBtn = document.createElement('button');
downBtn.className = 'tm-scroll-btn';
downBtn.textContent = '▼';
downBtn.title = 'Scroll to bottom';
downBtn.onclick = () => smoothScrollTo(document.documentElement.scrollHeight || document.body.scrollHeight);
container.appendChild(settingsBtn);
container.appendChild(upBtn);
container.appendChild(downBtn);
document.body.appendChild(container);
const settingsPanel = document.createElement('div');
settingsPanel.className = 'tm-settings-panel';
settingsPanel.innerHTML = `
<div class="tm-settings-panel-header">
<span>Settings</span>
<button class="tm-settings-panel-close" title="Close">×</button>
</div>
<div class="tm-settings-panel-content">
<div class="setting">
<div class="setting-row">
<label for="tm-transparency-toggle">Make buttons transparent</label>
<label class="toggle-switch">
<input type="checkbox" id="tm-transparency-toggle">
<span class="slider"></span>
</label>
</div>
</div>
<hr>
<div class="setting">
<label for="tm-hide-timer-input">Hide buttons temporarily</label>
<input type="text" id="tm-hide-timer-input" placeholder="HH-MM-SS" class="tm-hide-timer-input-text-color">
<button id="tm-start-hide-timer">Start Timer</button>
</div>
</div>
`;
document.body.appendChild(settingsPanel);
const closeSettingsBtn = settingsPanel.querySelector('.tm-settings-panel-close');
const hideTimerInput = document.getElementById('tm-hide-timer-input');
const startHideTimerBtn = document.getElementById('tm-start-hide-timer');
const transparencyToggle = document.getElementById('tm-transparency-toggle');
settingsBtn.addEventListener('click', () => {
settingsPanel.style.display = settingsPanel.style.display === 'block' ? 'none' : 'block';
});
closeSettingsBtn.addEventListener('click', () => {
settingsPanel.style.display = 'none';
});
startHideTimerBtn.addEventListener('click', () => {
const timeValue = hideTimerInput.value;
const timePattern = /^(\d+)-(\d{1,2})-(\d{1,2})$/;
const match = timeValue.match(timePattern);
hideTimerInput.classList.remove('error');
if (!match || parseInt(match[2], 10) >= 60 || parseInt(match[3], 10) >= 60) {
hideTimerInput.classList.add('error');
return;
}
const [ , hours, minutes, seconds] = match.map(Number);
const totalMilliseconds = (hours * 3600 + minutes * 60 + seconds) * 1000;
if (totalMilliseconds > 0) {
isTemporarilyHidden = true;
container.remove();
settingsPanel.remove();
style.remove();
hideTimerInput.value = '';
setTimeout(() => {
isTemporarilyHidden = false;
if (document.head) {
document.head.appendChild(style);
}
if (document.body) {
document.body.appendChild(container);
document.body.appendChild(settingsPanel);
}
settingsPanel.style.display = 'none';
container.style.display = document.fullscreenElement ? 'none' : 'flex';
}, totalMilliseconds);
}
});
const STORAGE_KEY = 'tm_scroll_transparent_v1';
const buttonsToMakeTransparent = [upBtn, downBtn, settingsBtn];
function applyTransparencyState(state) {
transparencyToggle.checked = state;
buttonsToMakeTransparent.forEach(btn => {
state ? btn.classList.add('transparent') : btn.classList.remove('transparent');
});
try {
localStorage.setItem(STORAGE_KEY, state ? '1' : '0');
} catch (e) { /* ignore storage errors */ }
}
transparencyToggle.addEventListener('change', () => {
applyTransparencyState(transparencyToggle.checked);
});
try {
const savedState = localStorage.getItem(STORAGE_KEY);
applyTransparencyState(savedState === '1');
} catch (e) { /* ignore storage errors */ }
document.addEventListener('fullscreenchange', () => {
container.style.display = document.fullscreenElement ? 'none' : 'flex';
});
const observer = new MutationObserver(() => {
if (isTemporarilyHidden) return;
if (!document.head || document.head.contains(style) === false) {
if (document.head) {
document.head.appendChild(style);
}
}
if (!document.body || document.body.contains(container) === false) {
if (document.body) {
document.body.appendChild(container);
document.body.appendChild(settingsPanel);
}
}
});
observer.observe(document.documentElement || document, { childList: true, subtree: true });
})();