Toggle fullscreen for code blocks on hover
Version au
// ==UserScript==
// @name Expand Code to Fullscreen on StackExchange Site
// @namespace http://tampermonkey.net/
// @author aspen138
// @version 0.1
// @description Toggle fullscreen for code blocks on hover
// @match *://*.stackexchange.com/*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// Function to inject styles
function addStyles() {
const style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = `
.code-wrapper {
position: relative;
}
.fullscreen-btn {
position: absolute;
top: 0;
right: 0;
z-index: 10;
padding: 4px 8px;
background-color: #eee;
border: none;
cursor: pointer;
border-radius: 4px;
font-size: 12px;
display: none;
}
.fullscreen-btn:hover {
background-color: #ddd;
}
.code-wrapper:hover .fullscreen-btn {
display: block;
}
/* Fullscreen specific styles */
.code-wrapper.fullscreen {
background: white; /* Change this to the desired background color */
color: black; /* And this to the desired text color */
width: 100%;
height: 100%;
overflow: auto; /* This allows scrolling */
margin: 0;
padding: 20px; /* Or however much padding you want */
}
/* Ensure syntax highlighting styles have enough specificity */
.code-wrapper.fullscreen .hljs {
display: block;
overflow-x: auto;
padding: 0.5em;
color: inherit;
background: inherit;
}
`;
document.head.appendChild(style);
}
// Function to toggle fullscreen for the specific code block
function toggleFullScreen(codeWrapper) {
if (!document.fullscreenElement && codeWrapper.requestFullscreen) {
codeWrapper.requestFullscreen().then(() => {
codeWrapper.classList.add('fullscreen');
// Copy all classes from <code> to the wrapper
codeWrapper.querySelector('code').classList.forEach(cls => {
codeWrapper.classList.add(cls);
});
});
} else if (document.fullscreenElement && document.exitFullscreen) {
document.exitFullscreen().then(() => {
codeWrapper.classList.remove('fullscreen');
// Remove the copied classes from the wrapper
codeWrapper.querySelector('code').classList.forEach(cls => {
codeWrapper.classList.remove(cls);
});
});
}
}
// Function to create a fullscreen button for each code block
function addFullscreenButtons() {
document.querySelectorAll('pre code').forEach((code) => {
// Check if the code block is already wrapped with the code-wrapper
let wrapper = code.closest('.code-wrapper');
if (!wrapper) {
wrapper = document.createElement('div');
wrapper.classList.add('code-wrapper');
// Move the classes from <code> to the wrapper
code.classList.forEach(cls => {
if (cls !== 'hljs') { // Avoid moving the 'hljs' class
wrapper.classList.add(cls);
}
});
code.parentNode.insertBefore(wrapper, code);
wrapper.appendChild(code);
}
// Create and append the fullscreen button if not already there
if (!wrapper.querySelector('.fullscreen-btn')) {
const btn = document.createElement('button');
btn.textContent = 'Fullscreen';
btn.classList.add('fullscreen-btn');
btn.addEventListener('click', () => toggleFullScreen(wrapper));
wrapper.appendChild(btn);
}
});
}
// Wait for the DOM to be fully loaded
window.addEventListener('load', function() {
addStyles();
// Call addFullscreenButtons with a delay to allow syntax highlighting to process
setTimeout(addFullscreenButtons, 0);
});
})();