Twitter Media Gallery Slideshow with Timer

Extract images from Twitter media and play slideshow with controls and countdown timer

当前为 2025-07-12 提交的版本,查看 最新版本

您需要先安装一个扩展,例如 篡改猴Greasemonkey暴力猴,之后才能安装此脚本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴Userscripts ,之后才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。

您需要先安装用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name         Twitter Media Gallery Slideshow with Timer
// @namespace    http://tampermonkey.net/
// @version      1.4
// @description  Extract images from Twitter media and play slideshow with controls and countdown timer
// @author       pshot
// @match        https://twitter.com/*
// @match        https://x.com/*
// @grant        none
// @license MIT
// ==/UserScript==

(function () {
    'use strict';

    let slideshowOverlay = null;
    let slideshowImages = [];
    let currentIndex = 0;
    let slideshowInterval = null;
    let countdownInterval = null;
    let countdownSeconds = 10;

    // Extract full-size image URLs from Twitter media gallery
    function extractImageUrls() {
        const seen = new Set();
        const images = [];

        const imgElements = document.querySelectorAll('img[src*="pbs.twimg.com/media/"]');

        imgElements.forEach(img => {
            const src = img.src;
            const baseUrl = src.split('?')[0];
            if (!seen.has(baseUrl)) {
                seen.add(baseUrl);
                const fullUrl = baseUrl + '?format=jpg&name=large';
                images.push(fullUrl);
            }
        });

        return images;
    }

    // Create and show slideshow overlay
    function showSlideshow(images) {
        if (images.length === 0) {
            alert('No images found!');
            return;
        }

        if (slideshowOverlay) {
            slideshowOverlay.remove();
            clearInterval(slideshowInterval);
            clearInterval(countdownInterval);
        }

        slideshowImages = images;
        currentIndex = 0;
        countdownSeconds = 10;

        slideshowOverlay = document.createElement('div');
        slideshowOverlay.style.position = 'fixed';
        slideshowOverlay.style.top = '0';
        slideshowOverlay.style.left = '0';
        slideshowOverlay.style.width = '100vw';
        slideshowOverlay.style.height = '100vh';
        slideshowOverlay.style.backgroundColor = 'rgba(0,0,0,0.9)';
        slideshowOverlay.style.display = 'flex';
        slideshowOverlay.style.alignItems = 'center';
        slideshowOverlay.style.justifyContent = 'center';
        slideshowOverlay.style.flexDirection = 'column';
        slideshowOverlay.style.zIndex = '100000';

        // Image element
        const img = document.createElement('img');
        img.src = slideshowImages[currentIndex];
        img.style.maxWidth = '90%';
        img.style.maxHeight = '90%';
        img.style.borderRadius = '10px';
        img.style.boxShadow = '0 0 20px rgba(255, 255, 255, 0.7)';
        slideshowOverlay.appendChild(img);

        // Countdown timer display
        const timerDisplay = document.createElement('div');
        timerDisplay.style.color = 'white';
        timerDisplay.style.fontSize = '18px';
        timerDisplay.style.marginTop = '10px';
        timerDisplay.style.fontFamily = 'Arial, sans-serif';
        timerDisplay.textContent = `Next image in: ${countdownSeconds} seconds`;
        slideshowOverlay.appendChild(timerDisplay);

        // Close button
        const closeBtn = document.createElement('button');
        closeBtn.innerText = '✕';
        closeBtn.style.position = 'fixed';
        closeBtn.style.top = '20px';
        closeBtn.style.right = '20px';
        closeBtn.style.fontSize = '30px';
        closeBtn.style.background = 'transparent';
        closeBtn.style.color = 'white';
        closeBtn.style.border = 'none';
        closeBtn.style.cursor = 'pointer';
        closeBtn.style.zIndex = '100001';
        closeBtn.title = 'Close Slideshow';
        closeBtn.addEventListener('click', () => {
            clearInterval(slideshowInterval);
            clearInterval(countdownInterval);
            slideshowOverlay.remove();
            slideshowOverlay = null;
        });
        slideshowOverlay.appendChild(closeBtn);

        // Navigation functions
        function showImage(index) {
            currentIndex = (index + slideshowImages.length) % slideshowImages.length;
            img.src = slideshowImages[currentIndex];
        }

        function nextImage() {
            showImage(currentIndex + 1);
            countdownSeconds = 10;
            timerDisplay.textContent = `Next image in: ${countdownSeconds} seconds`;
        }

        function prevImage() {
            showImage(currentIndex - 1);
            countdownSeconds = 10;
            timerDisplay.textContent = `Next image in: ${countdownSeconds} seconds`;
        }

        // Keyboard controls
        function keyHandler(e) {
            if (!slideshowOverlay) return;

            if (e.key === 'ArrowRight') {
                nextImage();
                resetInterval();
            } else if (e.key === 'ArrowLeft') {
                prevImage();
                resetInterval();
            } else if (e.key === 'Escape') {
                closeBtn.click();
            }
        }

        document.addEventListener('keydown', keyHandler);

        // Auto-advance every 10 seconds
        function resetInterval() {
            clearInterval(slideshowInterval);
            clearInterval(countdownInterval);
            countdownSeconds = 10;
            timerDisplay.textContent = `Next image in: ${countdownSeconds} seconds`;

            slideshowInterval = setInterval(nextImage, 10000);

            countdownInterval = setInterval(() => {
                countdownSeconds--;
                if (countdownSeconds < 0) countdownSeconds = 0;
                timerDisplay.textContent = `Next image in: ${countdownSeconds} seconds`;
            }, 1000);
        }
        resetInterval();

        document.body.appendChild(slideshowOverlay);
    }

    // Add control button to page
    function addButton() {
        if (document.getElementById('extract-images-btn')) return;

        const btn = document.createElement('button');
        btn.innerText = 'Start Twitter Slideshow';
        btn.id = 'extract-images-btn';
        btn.style.position = 'fixed';
        btn.style.top = '10px';
        btn.style.right = '10px';
        btn.style.zIndex = '9999';
        btn.style.padding = '10px';
        btn.style.background = '#1da1f2';
        btn.style.color = 'white';
        btn.style.border = 'none';
        btn.style.borderRadius = '5px';
        btn.style.cursor = 'pointer';
        btn.title = 'Extract images and start slideshow';

        btn.addEventListener('click', () => {
            const images = extractImageUrls();
            showSlideshow(images);
        });

        document.body.appendChild(btn);
    }

    // Observe DOM to add button dynamically (Twitter SPA)
    const observer = new MutationObserver(() => {
        addButton();
    });
    observer.observe(document.body, { childList: true, subtree: true });

    // Initial call
    addButton();
})();