// ==UserScript==
// @name               My Mouse Gestures
// @name:zh-CN         我的鼠标手势
// @name:zh-TW         我的滑鼠手勢
// @description        A simple mouse gesture script
// @description:zh-CN  一个简单的鼠标手势脚本
// @description:zh-TW  一個簡單的滑鼠手勢腳本
// @version            0.2.2
// @match              *://*/*
// @run-at             document-start
// @grant              GM_openInTab
// @grant              window.close
// @grant              GM_setValue
// @grant              GM_getValue
// @namespace          https://greasyfork.org/users/4968
// ==/UserScript==
// --- Settings ---
const SENSITIVITY = 3; // 1 ~ 5
const TOLERANCE = 3; // 1 ~ 5
const funcs = {
'U': () => window.scrollTo(0, 0),
'D': () => window.scrollTo(0, 1073741824),
'L': () => window.history.back(),
'R': () => window.history.forward(),
'DR': () => window.top.close(),
'UD': () => window.location.reload(),
'RU': () => {
GM_openInTab('about:newtab', false);
if (navigator.userAgent.indexOf('Firefox') !== -1) {
GM_openInTab('about:blank', false);
}
},
'RL': () => {
let closedTabs = GM_getValue("closedTabs", []);
if (closedTabs.length > 0) {
let lastclosedTab = closedTabs.pop();
GM_setValue("closedTabs", closedTabs);
GM_openInTab(lastclosedTab, false);
}
}
};
// ----------------
const s = 1 << ((7 - SENSITIVITY) << 1);
const t1 = Math.tan(0.15708 * TOLERANCE);
const t2 = 1 / t1;
const abs = Math.abs;
let x, y, path, lastGesture;
const tracer = function (e) {
const { clientX: cx, clientY: cy } = e;
const dx = cx - x;
const dy = cy - y;
const distance = dx ** 2 + dy ** 2;
if (distance > s) {
const slope = abs(dy / dx);
let direction = '';
if (slope > t1) {
direction = dy > 0 ? 'D' : 'U';
} else if (slope <= t2) {
direction = dx > 0 ? 'R' : 'L';
}
if (lastGesture !== direction) {
lastGesture = direction;
path += direction;
}
x = cx;
y = cy;
}
};
window.addEventListener('mousedown', function (e) {
if (e.button === 2) {
x = e.clientX;
y = e.clientY;
path = "";
lastGesture = "";
window.addEventListener('mousemove', tracer, false);
}
}, false);
window.addEventListener('contextmenu', function (e) {
window.removeEventListener('mousemove', tracer, false);
if (path !== "") {
e.preventDefault();
if (funcs.hasOwnProperty(path)) {
funcs[path]();
}
}
}, false);
window.addEventListener("beforeunload", () => {
let closedTabs = GM_getValue("closedTabs", []).slice(-10);
closedTabs.push(window.location.href);
GM_setValue("closedTabs", closedTabs);
});