DailyBoats Gallery Fix (Lightbox)

Replaces "open image in same tab" with a proper lightbox gallery (keyboard + touch + captions + preload).

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

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

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name         DailyBoats Gallery Fix (Lightbox)
// @namespace    https://github.com/FairlyIncognito/DailyBoatsGalleryFix
// @version      1.0.1
// @description  Replaces "open image in same tab" with a proper lightbox gallery (keyboard + touch + captions + preload).
// @match        https://dailyboats.com/*
// @run-at       document-idle
// @noframes
// @grant        none
// @license      MIT
// ==/UserScript==

(function () {
  'use strict';

  // --- Config (edit if their HTML changes) ---
  const selector = '.boat-images a[href$=".jpg"], .boat-images a[href$=".jpeg"], .boat-images a[href$=".png"]';
  const closeOnBackdrop = true;

  // Runs once DOM is stable; if content is injected later, MutationObserver below rebinds
  function initGallery() {
    const links = Array.from(document.querySelectorAll(selector));
    if (!links.length) return;

    // Prevent double init
    if (document.querySelector('.gf-overlay')) return;

    const items = links.map(a => ({
      src: a.href,
      caption: a.getAttribute('title') || (a.querySelector('img')?.getAttribute('alt')) || ''
    }));

    // Inject styles
    const css = `
      .gf-overlay{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.9);z-index:2147483000}
      .gf-overlay.is-open{display:flex}
      .gf-wrap{position:relative;max-width:min(96vw,1400px);max-height:90vh;width:fit-content}
      .gf-img{max-width:96vw;max-height:80vh;display:block;margin:auto;box-shadow:0 10px 40px rgba(0,0,0,.5);border-radius:8px}
      .gf-ui{position:absolute;left:0;right:0;top:100%;display:flex;justify-content:space-between;align-items:center;color:#eee;font:14px/1.4 system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;margin-top:.5rem}
      .gf-caption{flex:1;opacity:.9;word-break:break-word;padding-right:.5rem}
      .gf-ctr{opacity:.7;white-space:nowrap}
      .gf-btn{position:absolute;top:50%;transform:translateY(-50%);border:none;background:rgba(0,0,0,.35);color:#fff;font-size:28px;width:42px;height:64px;border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center}
      .gf-btn:hover{background:rgba(255,255,255,.18)}
      .gf-prev{left:-56px}
      .gf-next{right:-56px}
      @media (max-width: 768px){ .gf-prev{left:6px} .gf-next{right:6px} }
      .gf-close{position:absolute;top:-48px;right:0;border:none;background:rgba(0,0,0,.35);color:#fff;width:40px;height:40px;border-radius:999px;font-size:22px;cursor:pointer}
      .gf-close:hover{background:rgba(255,255,255,.18)}
      .gf-hint{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);color:#aaa;font:12px system-ui}
      .gf-hide-scroll{overflow:hidden!important;touch-action:none}
      .gf-zoomable{cursor:zoom-in}
    `;
    const style = document.createElement('style');
    style.textContent = css;
    document.head.appendChild(style);

    // Overlay DOM
    const overlay = document.createElement('div');
    overlay.className = 'gf-overlay';
    overlay.innerHTML = `
      <div class="gf-wrap" role="dialog" aria-modal="true">
        <img class="gf-img gf-zoomable" alt="">
        <button class="gf-btn gf-prev" aria-label="Previous">‹</button>
        <button class="gf-btn gf-next" aria-label="Next">›</button>
        <button class="gf-close" aria-label="Close">×</button>
        <div class="gf-ui">
          <div class="gf-caption"></div>
          <div class="gf-ctr"></div>
        </div>
        <div class="gf-hint">← / → to navigate • Esc to close</div>
      </div>
    `;
    document.body.appendChild(overlay);

    const imgEl = overlay.querySelector('.gf-img');
    const capEl = overlay.querySelector('.gf-caption');
    const ctrEl = overlay.querySelector('.gf-ctr');
    const btnPrev = overlay.querySelector('.gf-prev');
    const btnNext = overlay.querySelector('.gf-next');
    const btnClose = overlay.querySelector('.gf-close');

    // State
    let idx = 0;
    let touchStartX = 0;
    let zoom = 1;
    let panX = 0, panY = 0;
    let isPanning = false;
    let startPanX = 0, startPanY = 0;

    // Helpers
    const clamp = i => (i + items.length) % items.length;
    const preload = i => { const n = new Image(); n.src = items[clamp(i)].src; };

    function resetZoom() {
      zoom = 1; panX = 0; panY = 0;
      imgEl.style.transform = '';
      imgEl.classList.add('gf-zoomable');
    }
    function applyTransform() {
      imgEl.style.transform = `translate(${panX}px, ${panY}px) scale(${zoom})`;
    }

    function show(i) {
      idx = clamp(i);
      const it = items[idx];
      resetZoom();
      imgEl.src = '';
      imgEl.alt = it.caption || '';
      overlay.style.cursor = 'progress';
      const tmp = new Image();
      tmp.onload = () => {
        imgEl.src = tmp.src;
        overlay.style.cursor = '';
      };
      tmp.src = it.src;
      capEl.textContent = it.caption || '';
      ctrEl.textContent = `${idx + 1} / ${items.length}`;
      preload(idx + 1); preload(idx - 1);
    }

    function open(i) {
      document.documentElement.classList.add('gf-hide-scroll');
      overlay.classList.add('is-open');
      show(i);
      window.addEventListener('keydown', onKey);
    }
    function close() {
      overlay.classList.remove('is-open');
      document.documentElement.classList.remove('gf-hide-scroll');
      window.removeEventListener('keydown', onKey);
    }
    function next() { show(idx + 1); }
    function prev() { show(idx - 1); }
    function onKey(e) {
      if (e.key === 'Escape') close();
      else if (e.key === 'ArrowRight') next();
      else if (e.key === 'ArrowLeft') prev();
      else if ((e.key === '+' || e.key === '=')) { zoom = Math.min(zoom + 0.25, 5); applyTransform(); imgEl.classList.remove('gf-zoomable'); }
      else if ((e.key === '-' || e.key === '_')) { zoom = Math.max(zoom - 0.25, 1); if (zoom === 1) { resetZoom(); } else applyTransform(); }
      else if (e.key.toLowerCase() === 'z') { resetZoom(); }
    }

    // Bind triggers
    links.forEach((a, i) => {
      a.addEventListener('click', (ev) => {
        ev.preventDefault();
        ev.stopPropagation();
        open(i);
      }, { passive: false });
    });

    // Buttons
    btnNext.addEventListener('click', next);
    btnPrev.addEventListener('click', prev);
    btnClose.addEventListener('click', close);

    // Backdrop click
    if (closeOnBackdrop) {
      overlay.addEventListener('click', (e) => {
        const wrap = overlay.querySelector('.gf-wrap');
        if (!wrap.contains(e.target)) close();
      });
    }

    // Touch swipe
    overlay.addEventListener('touchstart', (e) => {
      if (e.touches.length > 1) return; // ignore pinch for swipe
      touchStartX = e.changedTouches[0].clientX;
    }, { passive: true });

    overlay.addEventListener('touchend', (e) => {
      if (e.changedTouches.length === 0) return;
      const dx = e.changedTouches[0].clientX - touchStartX;
      if (Math.abs(dx) > 50) (dx < 0 ? next() : prev());
    }, { passive: true });

    // Mouse wheel zoom (ctrl+wheel and plain wheel)
    overlay.addEventListener('wheel', (e) => {
      if (!overlay.classList.contains('is-open')) return;
      if (e.ctrlKey || Math.abs(e.deltaY) > Math.abs(e.deltaX)) {
        e.preventDefault();
        const delta = -Math.sign(e.deltaY) * 0.25;
        const prevZoom = zoom;
        zoom = Math.min(5, Math.max(1, zoom + delta));
        if (zoom !== prevZoom) {
          imgEl.classList.remove('gf-zoomable');
          applyTransform();
        }
        if (zoom === 1) resetZoom();
      }
    }, { passive: false });

    // Drag to pan when zoomed
    imgEl.addEventListener('mousedown', (e) => {
      if (zoom <= 1) return;
      isPanning = true;
      startPanX = e.clientX - panX;
      startPanY = e.clientY - panY;
      e.preventDefault();
    });
    window.addEventListener('mousemove', (e) => {
      if (!isPanning) return;
      panX = e.clientX - startPanX;
      panY = e.clientY - startPanY;
      applyTransform();
    });
    window.addEventListener('mouseup', () => { isPanning = false; });

    console.log('[GalleryFix] Ready. Found', items.length, 'images.');
  }

  // Initial run + observe late-loaded content
  const ready = () => initGallery();
  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', ready, { once: true });
  } else {
    ready();
  }

  // Re-run if new thumbnails are injected later
  const mo = new MutationObserver(() => {
    // Only (re)init if overlay not present AND images exist
    if (!document.querySelector('.gf-overlay') && document.querySelector(selector)) {
      initGallery();
    }
  });
  mo.observe(document.documentElement, { childList: true, subtree: true });
})();