Add a thumbnail filmstrip to the photo lightbox.

- Render a horizontally scrollable strip of thumbnails below the image
  that highlights and auto-centres the active photo and lets you jump
  straight to any shot.
- Pass thumbUrl through from the public and admin galleries, falling
  back to previewUrl when no thumbnail exists.
- Restructure the overlay into a flex column (image area + strip) and
  require a clearly horizontal gesture before treating a touch as a
  prev/next swipe, so vertical scrolls no longer trigger navigation.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Michilis
2026-07-26 05:53:37 +00:00
co-authored by Claude Fable 5
parent 9b2668f498
commit c4094630d9
3 changed files with 101 additions and 44 deletions
@@ -149,6 +149,7 @@ export default function GalleryClient({ slug, eventSlug, initial }: GalleryClien
previewUrl: p.urls.preview || p.urls.original,
downloadUrl: p.urls.original,
filename: p.originalFilename,
thumbUrl: p.urls.thumb,
}));
const title = es && gallery.titleEs ? gallery.titleEs : gallery.title;
@@ -266,6 +266,7 @@ export default function AdminGalleryDetailPage() {
previewUrl: p.urls.preview || p.urls.original,
downloadUrl: p.urls.original,
filename: p.originalFilename,
thumbUrl: p.urls.thumb,
}));
const openLightboxFor = (photoId: string) => {
const idx = readyPhotos.findIndex((p) => p.id === photoId);
+99 -44
View File
@@ -1,6 +1,6 @@
'use client';
import { useEffect, useCallback, useState } from 'react';
import { useEffect, useCallback, useRef, useState } from 'react';
import {
XMarkIcon,
ChevronLeftIcon,
@@ -13,6 +13,8 @@ export interface LightboxItem {
previewUrl: string;
downloadUrl: string;
filename?: string;
/** Small thumbnail for the filmstrip; falls back to previewUrl. */
thumbUrl?: string;
}
interface LightboxProps {
@@ -29,8 +31,10 @@ interface LightboxProps {
* style of the admin gallery preview modal (fixed inset-0 bg-black/90).
*/
export default function Lightbox({ items, index, onClose, onNavigate, renderActions }: LightboxProps) {
const [touchStartX, setTouchStartX] = useState<number | null>(null);
const touchStart = useRef<{ x: number; y: number } | null>(null);
const activeThumbRef = useRef<HTMLButtonElement | null>(null);
const item = items[index];
const hasMultiple = items.length > 1;
const prev = useCallback(() => {
onNavigate(index > 0 ? index - 1 : items.length - 1);
@@ -53,19 +57,33 @@ export default function Lightbox({ items, index, onClose, onNavigate, renderActi
};
}, [onClose, prev, next]);
// Keep the active thumbnail centred in the filmstrip as you navigate.
useEffect(() => {
activeThumbRef.current?.scrollIntoView({
behavior: 'smooth',
inline: 'center',
block: 'nearest',
});
}, [index]);
if (!item) return null;
return (
<div
className="fixed inset-0 bg-black/90 z-50 flex items-center justify-center"
className="fixed inset-0 bg-black/90 z-50 flex flex-col"
onClick={onClose}
onTouchStart={(e) => setTouchStartX(e.touches[0].clientX)}
onTouchStart={(e) => {
touchStart.current = { x: e.touches[0].clientX, y: e.touches[0].clientY };
}}
onTouchEnd={(e) => {
if (touchStartX === null) return;
const dx = e.changedTouches[0].clientX - touchStartX;
if (dx > 60) prev();
if (dx < -60) next();
setTouchStartX(null);
if (touchStart.current === null) return;
const dx = e.changedTouches[0].clientX - touchStart.current.x;
const dy = e.changedTouches[0].clientY - touchStart.current.y;
touchStart.current = null;
// Only treat as a swipe when it's clearly horizontal.
if (Math.abs(dx) < 50 || Math.abs(dx) < Math.abs(dy)) return;
if (dx > 0) prev();
else next();
}}
>
<button
@@ -91,47 +109,84 @@ export default function Lightbox({ items, index, onClose, onNavigate, renderActi
{renderActions?.(item, index)}
</div>
{items.length > 1 && (
<>
<button
className="absolute left-2 md:left-4 text-white/80 hover:text-white z-10 p-2"
onClick={(e) => {
e.stopPropagation();
prev();
}}
aria-label="Previous"
>
<ChevronLeftIcon className="w-9 h-9" />
</button>
<button
className="absolute right-2 md:right-4 text-white/80 hover:text-white z-10 p-2"
onClick={(e) => {
e.stopPropagation();
next();
}}
aria-label="Next"
>
<ChevronRightIcon className="w-9 h-9" />
</button>
</>
)}
{/* Main image area */}
<div className="relative flex-1 min-h-0 flex items-center justify-center">
{hasMultiple && (
<>
<button
className="absolute left-2 md:left-4 top-1/2 -translate-y-1/2 text-white/80 hover:text-white z-10 p-2"
onClick={(e) => {
e.stopPropagation();
prev();
}}
aria-label="Previous"
>
<ChevronLeftIcon className="w-9 h-9" />
</button>
<button
className="absolute right-2 md:right-4 top-1/2 -translate-y-1/2 text-white/80 hover:text-white z-10 p-2"
onClick={(e) => {
e.stopPropagation();
next();
}}
aria-label="Next"
>
<ChevronRightIcon className="w-9 h-9" />
</button>
</>
)}
{/* eslint-disable-next-line @next/next/no-img-element */}
<img
src={item.previewUrl}
alt=""
className="max-w-[95vw] max-h-[90vh] object-contain select-none"
{/* eslint-disable-next-line @next/next/no-img-element */}
<img
src={item.previewUrl}
alt=""
className="max-w-[95vw] max-h-full object-contain select-none"
onClick={(e) => e.stopPropagation()}
draggable={false}
/>
</div>
{/* Counter + thumbnail filmstrip you can skip through. */}
<div
className="shrink-0 pb-3 pt-2"
onClick={(e) => e.stopPropagation()}
draggable={false}
/>
<div className="absolute bottom-3 inset-x-0 text-center text-white/70 text-sm">
{index + 1} / {items.length}
onTouchStart={(e) => e.stopPropagation()}
onTouchEnd={(e) => e.stopPropagation()}
>
<div className="text-center text-white/70 text-sm mb-2">
{index + 1} / {items.length}
</div>
{hasMultiple && (
<div className="flex gap-2 overflow-x-auto px-4 pb-1 justify-start sm:justify-center [scrollbar-width:thin]">
{items.map((it, i) => (
<button
key={it.id}
ref={i === index ? activeThumbRef : null}
onClick={() => onNavigate(i)}
aria-label={`Photo ${i + 1}`}
aria-current={i === index}
className={`relative shrink-0 overflow-hidden rounded transition ${
i === index
? 'ring-2 ring-white opacity-100'
: 'opacity-50 hover:opacity-90'
}`}
>
{/* eslint-disable-next-line @next/next/no-img-element */}
<img
src={it.thumbUrl || it.previewUrl}
alt=""
className="h-14 w-14 sm:h-16 sm:w-16 object-cover"
draggable={false}
/>
</button>
))}
</div>
)}
</div>
{/* Preload neighbours so prev/next feels instant. */}
<div className="hidden" aria-hidden>
{items.length > 1 && (
{hasMultiple && (
<>
{/* eslint-disable-next-line @next/next/no-img-element */}
<img src={items[(index + 1) % items.length].previewUrl} alt="" />