Useless Things Series: Mouse and Keyboard Event Counters

Counts mouse movement in inches, scroll events, key presses, mouse clicks (left and right), and displays the top 5 keys pressed along with their counts.
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// ==UserScript==
// @name         Useless Things Series: Mouse and Keyboard Event Counters
// @version      1.3
// @description  Counts mouse movement in inches, scroll events, key presses, mouse clicks (left and right), and displays the top 5 keys pressed along with their counts.
// @match        *://*/*
// @grant        none
// @license      MIT
// @namespace https://gf.qytechs.cn/users/1126616
// ==/UserScript==

(function() {
    var mouseInches = 0;
    var scrollCount = 0;
    var letterCount = 0;
    var leftClickCount = 0;
    var rightClickCount = 0;
    var keyPressCount = {};

    var countersDiv = document.createElement('div');
    countersDiv.style.position = 'fixed';
    countersDiv.style.left = '10px';
    countersDiv.style.top = '10px';
    countersDiv.style.padding = '10px';
    countersDiv.style.border = '2px solid #fff';
    countersDiv.style.borderRadius = '5px';
    countersDiv.style.transition = 'background-color 0.3s, opacity 0.3s';
    countersDiv.style.backgroundColor = 'rgba(0, 0, 0, 0.7)';
    countersDiv.style.color = '#fff';
    countersDiv.style.cursor = 'move';
    countersDiv.style.userSelect = 'none';
    countersDiv.style.display = 'none';
    countersDiv.style.opacity = '0';
    document.body.appendChild(countersDiv);

    var mouseCounter = createCounter('Mouse Inches');
    var scrollCounter = createCounter('Scrolls');
    var letterCounter = createCounter('Letters Pressed');
    var leftClickCounter = createCounter('Left Clicks');
    var rightClickCounter = createCounter('Right Clicks');
    var topKeysCounter = createCounter('Top 5 Keys');

    countersDiv.appendChild(mouseCounter);
    countersDiv.appendChild(scrollCounter);
    countersDiv.appendChild(letterCounter);
    countersDiv.appendChild(leftClickCounter);
    countersDiv.appendChild(rightClickCounter);
    countersDiv.appendChild(topKeysCounter);

    var timeout;
    var lastScrollTime = new Date().getTime();
    var isDragging = false;
    var offsetX, offsetY;

    countersDiv.addEventListener('mousedown', function(e) {
        isDragging = true;
        offsetX = e.clientX - countersDiv.getBoundingClientRect().left;
        offsetY = e.clientY - countersDiv.getBoundingClientRect().top;
    });

    document.addEventListener('mousemove', function(e) {
        if (isDragging) {
            countersDiv.style.left = e.clientX - offsetX + 'px';
            countersDiv.style.top = e.clientY - offsetY + 'px';
        }
    });

    document.addEventListener('mouseup', function() {
        isDragging = false;
    });

    document.addEventListener('mousemove', function(event) {
        clearTimeout(timeout);

        var deltaX = event.movementX || 0;
        var deltaY = event.movementY || 0;
        mouseInches += Math.sqrt(deltaX * deltaX + deltaY * deltaY) / 96;
        updateCounters();

        timeout = setTimeout(function() {
            countersDiv.style.opacity = '0';
            setTimeout(function() {
                countersDiv.style.display = 'none';
            }, 300);
        }, 3000);
    });

    document.addEventListener('wheel', function(event) {
        var currentTime = new Date().getTime();
        if (currentTime - lastScrollTime > 100) {
            scrollCount++;
            lastScrollTime = currentTime;
        }

        updateCounters();
    });

    document.addEventListener('keydown', function(event) {
        letterCount++;
        var key = event.key.toUpperCase();
        keyPressCount[key] = (keyPressCount[key] || 0) + 1;

        updateCounters();
    });

    document.addEventListener('mousedown', function(event) {
        if (event.button === 0) {
            leftClickCount++;
        } else if (event.button === 2) {
            rightClickCount++;
        }

        updateCounters();
    });

    function updateCounters() {
        mouseCounter.textContent = 'Mouse Inches: ' + mouseInches.toFixed(2) + ' in';
        scrollCounter.textContent = 'Scrolls: ' + scrollCount;
        letterCounter.textContent = 'Letters Pressed: ' + letterCount;
        leftClickCounter.textContent = 'Left Clicks: ' + leftClickCount;
        rightClickCounter.textContent = 'Right Clicks: ' + rightClickCount;

        // Display top 5 keys pressed in a column
        var sortedKeys = Object.keys(keyPressCount).sort(function(a, b) {
            return keyPressCount[b] - keyPressCount[a];
        });

        var topKeysText = 'Top 5 Keys:<br>';
        for (var i = 0; i < Math.min(5, sortedKeys.length); i++) {
            var key = sortedKeys[i];
            topKeysText += key + ': ' + keyPressCount[key] + '<br>';
        }

        topKeysCounter.innerHTML = topKeysText;

        countersDiv.style.display = 'block';
        countersDiv.style.opacity = '1';
    }

    function createCounter(label) {
        var counter = document.createElement('div');
        counter.style.marginBottom = '8px';
        counter.textContent = label + ': 0';
        counter.style.color = '#fff';
        return counter;
    }
})();
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