Makes Microsoft Loop use full screen width by updating a single element's CSS variable, and restores the original value via a toggle button with a fixed, translucent design.
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// ==UserScript==
// @name Microsoft Loop Full Width (Single Element)
// @namespace http://tampermonkey.net/
// @version 2025-02-17
// @description Makes Microsoft Loop use full screen width by updating a single element's CSS variable, and restores the original value via a toggle button with a fixed, translucent design.
// @author Salo
// @match https://loop.cloud.microsoft/p/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=cloud.microsoft
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
let isActive = true; // Global flag for feature status
// Store the original value from the target element.
let originalValue = null;
// Function to find the target element: the first element whose inline style contains "--max-canvas-content-width"
function findTargetElement() {
return document.querySelector('div[style*="--max-canvas-content-width"]');
}
// Update the target element's property to the current screen width
function updateTargetElement() {
if (!isActive) return;
const element = findTargetElement();
if (element) {
// Store the original value only once
if (originalValue === null) {
// If there is no value before, keep it as null so we know to remove it later.
originalValue = element.style.getPropertyValue('--max-canvas-content-width') || null;
}
const screenWidth = window.innerWidth;
element.style.setProperty('--max-canvas-content-width', screenWidth + 'px');
console.log('Updated target element with --max-canvas-content-width:', screenWidth + 'px');
} else {
console.warn('Target element not found.');
}
}
// Restore the target element's original CSS property value
function restoreTargetElement() {
const element = findTargetElement();
if (element) {
if (originalValue === null) {
element.style.removeProperty('--max-canvas-content-width');
console.log('Removed --max-canvas-content-width property from target element.');
} else {
element.style.setProperty('--max-canvas-content-width', originalValue);
console.log('Restored target element with original --max-canvas-content-width:', originalValue);
}
}
}
// Set up MutationObserver to update the target element if it is added later
const observer = new MutationObserver(mutations => {
if (!isActive) return;
// Simply try to update the target element, if it's in the DOM.
updateTargetElement();
});
observer.observe(document.body, { childList: true, subtree: true });
// Create a floating toggle button with a fixed size and translucent style.
function createToggleButton() {
const btn = document.createElement('button');
btn.id = 'toggleCanvasWidthUpdater';
// Start with the "minimize" icon (🗕) for active functionality.
btn.innerHTML = '🗕';
Object.assign(btn.style, {
position: 'fixed',
bottom: '15px',
right: '20px',
zIndex: '9999',
width: '25px',
height: '25px',
// Translucent blue background using RGBA (opacity 0.7)
backgroundColor: 'rgba(0, 120, 215, 0.5)',
color: '#fff',
border: 'none',
borderRadius: '7px',
cursor: 'pointer',
fontSize: '12px', // Increase icon size for visibility
display: 'flex',
alignItems: 'center',
justifyContent: 'center',
padding: '0',
userSelect: 'none'
});
btn.addEventListener('click', () => {
isActive = !isActive;
// Toggle between the icons – 🗕 (active) and ⤢ (disabled)
btn.innerHTML = isActive ? '🗕' : '⤢';
console.log('Canvas update functionality is now', isActive ? 'enabled' : 'disabled');
if (isActive) {
updateTargetElement();
} else {
restoreTargetElement();
}
});
document.body.appendChild(btn);
}
// Update the target element on load and window resize
window.addEventListener('load', () => {
updateTargetElement();
createToggleButton();
});
window.addEventListener('resize', updateTargetElement);
})();