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Create a floating button and resizable rectangle
// ==UserScript==
// @name B站字幕遮挡工具-第二语言学习(Subtitle-Overlay)
// @namespace http://tampermonkey.net/
// @version 1.3
// @description Create a floating button and resizable rectangle
// @author You
// @match *://*.bilibili.com/*
// @license MIT License
// @grant none
// ==/UserScript==
(function () {
'use strict';
let rectangle = null;
let isResizing = false;
let isMoving = false;
let isButtonMoving = false;
let lastDownX = 0;
let lastDownY = 0;
let hideButtonTimeout = null;
function getFullscreenElement() {
return document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || document.msFullscreenElement;
}
function appendElement(element) {
const fullscreenElement = getFullscreenElement();
if (fullscreenElement) {
fullscreenElement.appendChild(element);
} else {
document.body.appendChild(element);
}
}
function handleFullscreenChange() {
const fullscreenElement = getFullscreenElement();
if (button.parentElement) {
button.parentElement.removeChild(button);
}
if (rectangle && rectangle.parentElement) {
rectangle.parentElement.removeChild(rectangle);
}
appendElement(button);
if (rectangle) {
appendElement(rectangle);
}
// 显示圆球按钮
showButton();
}
function resetHideButtonTimeout() {
if (hideButtonTimeout) {
clearTimeout(hideButtonTimeout);
}
hideButtonTimeout = setTimeout(() => {
button.style.display = 'none';
}, 2000);
}
function showButton() {
button.style.display = 'block';
resetHideButtonTimeout();
}
document.addEventListener('fullscreenchange', handleFullscreenChange);
document.addEventListener('mozfullscreenchange', handleFullscreenChange);
document.addEventListener('webkitfullscreenchange', handleFullscreenChange);
document.addEventListener('MSFullscreenChange', handleFullscreenChange);
// Create the floating button
const button = document.createElement('button');
button.textContent = 'R';
button.style.position = 'fixed';
button.style.zIndex = '9999';
button.style.left = '20px';
button.style.bottom = '100px';
button.style.width = '30px';
button.style.height = '30px';
button.style.borderRadius = '50%';
button.style.background = 'rgb(220, 53, 69)';
button.style.color = 'white';
button.style.cursor = 'move';
// 点击按钮时创建矩形
button.addEventListener('click', (e) => {
e.stopPropagation();
if (rectangle) {
rectangle.parentNode.removeChild(rectangle);
rectangle = null;
} else {
rectangle = document.createElement('div');
rectangle.style.position = 'fixed';
rectangle.style.zIndex = '9999';
rectangle.style.left = '50px';
rectangle.style.bottom = '50px';
rectangle.style.width = '200px';
rectangle.style.height = '200px';
rectangle.style.background = 'rgba(255, 255, 255, 0.2)';
rectangle.style.backdropFilter = 'blur(4px)'
rectangle.style.cursor = 'move';
rectangle.style.clipPath = 'polygon(0% 0%, 100% 0%, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0% 100%)'; // 使用 clipPath 创建折角形状
appendElement(rectangle);
// Create resizable handle
const div = document.createElement('div');
div.style.width = '40px';
div.style.height = '40px';
div.style.background = 'rgba(255, 255, 255, 0)';
div.style.borderRadius = '50%';
div.style.position = 'absolute';
div.style.cursor = 'se-resize';
div.style.zIndex = '10000';
div.style.right = '-5px';
div.style.bottom = '-5px';
rectangle.appendChild(div);
// 绑定鼠标按下事件
rectangle.addEventListener('mousedown', (e) => {
e.preventDefault(); // 将 e.preventDefault() 移动到这里
if (e.target === rectangle) {
isMoving = true;
} else {
isResizing = true;
}
lastDownX = e.clientX;
lastDownY = e.clientY;
});
// 绑定鼠标拖拽事件
document.addEventListener('mousemove', (e) => {
if (isMoving) {
rectangle.style.left = (rectangle.offsetLeft - lastDownX + e.clientX) + 'px';
rectangle.style.top = (rectangle.offsetTop - lastDownY + e.clientY) + 'px';
lastDownX = e.clientX;
lastDownY = e.clientY;
}
if (isResizing) {
const offsetX = e.clientX - lastDownX;
const offsetY = e.clientY - lastDownY;
rectangle.style.width = (rectangle.offsetWidth + offsetX) + 'px';
rectangle.style.height = (rectangle.offsetHeight + offsetY) + 'px';
lastDownX = e.clientX;
lastDownY = e.clientY;
}
});
// 绑定鼠标抬起事件
document.addEventListener('mouseup', () => {
isMoving = false;
isResizing = false;
});
}
});
// 绑定按钮鼠标按下事件
button.addEventListener('mousedown', (e) => {
e.preventDefault();
e.stopPropagation();
isButtonMoving = true;
lastDownX = e.clientX;
lastDownY = e.clientY;
});
// 绑定按钮鼠标拖拽事件
document.addEventListener('mousemove', (e) => {
if (isButtonMoving) {
button.style.left = (button.offsetLeft - lastDownX + e.clientX) + 'px';
button.style.top = (button.offsetTop - lastDownY + e.clientY) + 'px';
lastDownX = e.clientX;
lastDownY = e.clientY;
}
});
// 绑定按钮鼠标抬起事件
document.addEventListener('mouseup', () => {
isButtonMoving = false;
});
// 绑定鼠标移动事件，显示圆球
document.addEventListener('mousemove', () => {
showButton();
});
// 绑定鼠标点击事件，显示圆球
document.addEventListener('mousedown', () => {
showButton();
});
appendElement(button);
resetHideButtonTimeout();
})();