update
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toom1996
348
src/components/StreetSnap.astro
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348
src/components/StreetSnap.astro
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---
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import type { RawStreetSnap } from "@/lib/api"
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import Breadcrumb from "@/components/Breadcrumb.astro"
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import { getI18n } from "@/i18n/utils"
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import { href, ROUTES } from '@/lib/routes'
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import { ssrBase } from "@/lib/api"
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interface Props {
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snap: RawStreetSnap | null
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error?: "missing" | "failed" | null
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}
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const { snap, error = null } = Astro.props
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const { locale, t } = getI18n(Astro)
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const full = (u: string): string => {
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if (!u) return ""
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if (/^https?:\/\//i.test(u)) return u
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return ssrBase().replace(/\/$/, "") + u
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}
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const images = (snap?.images ?? [])
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.map((im) => ({
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id: im.id,
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url: full(im.image || ""),
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name: im.name || "",
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}))
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.filter((im) => im.url)
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const homeHref = href(locale, ROUTES.home)
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const archiveHref = href(locale, ROUTES.streetSnaps)
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// theimpression 标题含字面 \t：地点 \t 场次，列表/详情统一以 " · " 呈现
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const displayTitle = (snap?.title || "").replace(/\t/g, " · ")
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---
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<div
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id="street-snap-view"
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x-data="streetSnapView()"
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class="min-h-screen bg-white text-black font-sans selection:bg-black selection:text-white"
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>
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{
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snap ? (
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<article class="mx-auto max-w-[1600px] px-5 md:px-10 py-12 md:py-16">
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<Breadcrumb>
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<span slot="current" class="max-w-[60vw] truncate">{displayTitle}</span>
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</Breadcrumb>
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<h1 class="font-black leading-[0.95] tracking-tight text-[10vw] md:text-[4.5rem] mt-8">
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{displayTitle}
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</h1>
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{images.length > 0 && (
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<section class="mt-16">
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<div
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id="snap-gallery"
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class="grid grid-cols-2 md:grid-cols-3 gap-4"
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>
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{images.map((im, i) => (
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<figure
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data-image-index={i}
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data-image-url={im.url}
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data-image-name={im.name}
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@click={`openLb(${i})`}
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class="bg-[#f2f2f2] cursor-zoom-in group"
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>
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<img
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src={im.url}
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alt={im.name}
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loading={i < 6 ? "eager" : "lazy"}
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decoding="async"
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class="w-full aspect-[3/4] object-cover group-hover:opacity-90 transition-opacity"
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/>
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{im.name && (
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<figcaption class="text-[11px] font-mono uppercase tracking-widest text-[#999] mt-2">
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{im.name}
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</figcaption>
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)}
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</figure>
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))}
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</div>
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</section>
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)}
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</article>
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) : (
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<div class="flex flex-col items-center justify-center min-h-[60vh] px-5 text-center">
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<p class="font-mono text-sm text-[#888] uppercase tracking-widest mb-4">
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{error === "missing" ? t('No street snap ID specified') : t('Failed to load street snap. Please refresh or try later.')}
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</p>
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<a
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href={homeHref}
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class="text-[12px] font-mono uppercase tracking-[0.2em] border border-black px-4 py-2 hover:bg-black hover:text-white transition-colors"
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>
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← {t('Back to Index')}
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</a>
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</div>
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)
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}
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{snap && images.length > 0 && (
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<div
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x-show="lbOpen"
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x-cloak
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@keydown.window.escape="closeLb()"
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@keydown.window.arrow-right="nextLb()"
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@keydown.window.arrow-left="prevLb()"
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class="fixed inset-0 z-[100] bg-white flex flex-col select-none"
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aria-hidden="true"
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>
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<div
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class="absolute top-5 left-1/2 -translate-x-1/2 z-30 font-mono text-[12px] font-semibold tracking-[0.14em] text-[#111] bg-white/75 border border-black/10 px-3 py-1.5 rounded-[6px] backdrop-blur-md"
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x-text="`${lbIndex + 1} / ${imageCount}`"
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></div>
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<button
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type="button"
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@click="closeLb()"
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class="absolute top-[18px] right-[18px] z-30 w-10 h-10 rounded-full border border-black/15 bg-white/75 text-[#111] flex items-center justify-center backdrop-blur-md hover:bg-black/5 hover:border-black/30 transition-all cursor-pointer"
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aria-label={t('Close')}
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>
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✕
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</button>
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<div class="flex-1 min-h-0 flex items-stretch overflow-hidden relative">
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<div
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id="lb-thumbs"
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class="w-[76px] sm:w-[118px] flex-none overflow-y-auto overflow-x-hidden relative scroll-smooth p-[32px_8px] sm:p-[38px_18px_38px_20px] border-r border-black/10 bg-gradient-to-b from-black/5 to-transparent no-scrollbar"
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>
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{images.map((im, i) => (
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<button
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type="button"
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data-lb-index={i}
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data-thumb-url={im.url}
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@click={`showLb(${i})`}
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class="lb-thumb relative block w-full aspect-[3/4] mb-2 rounded-[2px] overflow-hidden cursor-pointer transition-all duration-200 opacity-40 hover:opacity-85 bg-[#eee] bg-cover bg-center"
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x-bind:class="lbIndex === Number($el.dataset.lbIndex)
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? 'opacity-100 scale-[1.03] ring-2 ring-[#111]'
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: ''"
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aria-label={`${i + 1}`}
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>
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<span class="absolute left-1 top-1 z-10 font-mono text-[8px] sm:text-[9px] font-semibold tracking-widest text-white px-1 py-0.5 rounded-[3px] bg-black/55 backdrop-blur-sm">
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{String(i + 1).padStart(2, "0")}
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</span>
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</button>
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))}
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</div>
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<button
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type="button"
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@click.stop="prevLb()"
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class="absolute left-3 sm:left-5 top-2 z-20 w-[52px] sm:w-[72px] h-[30px] sm:h-[34px] border border-black/15 bg-white/80 rounded-[6px] backdrop-blur-md flex items-center justify-center text-[#111] hover:bg-black/5 transition-all cursor-pointer"
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aria-label={t('Previous image')}
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>
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<svg class="w-4 h-4 stroke-current fill-none stroke-2" viewBox="0 0 24 24"><path d="M6 14l6-6 6 6" /></svg>
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</button>
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<button
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type="button"
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@click.stop="nextLb()"
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class="absolute left-3 sm:left-5 bottom-2 z-20 w-[52px] sm:w-[72px] h-[30px] sm:h-[34px] border border-black/15 bg-white/80 rounded-[6px] backdrop-blur-md flex items-center justify-center text-[#111] hover:bg-black/5 transition-all cursor-pointer"
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aria-label={t('Next image')}
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>
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<svg class="w-4 h-4 stroke-current fill-none stroke-2" viewBox="0 0 24 24"><path d="M6 10l6 6 6-6" /></svg>
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</button>
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<button
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type="button"
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@click.stop="prevLb()"
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class="absolute left-[82px] sm:left-[130px] top-1/2 -translate-y-1/2 z-20 w-10 h-10 rounded-full border border-black/15 bg-white/75 text-[#111] flex items-center justify-center backdrop-blur-md hover:scale-105 hover:border-black/30 transition-all cursor-pointer"
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aria-label={t('Previous image')}
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>
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<svg class="w-5 h-5 stroke-current fill-none stroke-2" viewBox="0 0 24 24"><path d="M15 6l-6 6 6 6" /></svg>
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</button>
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<button
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type="button"
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@click.stop="nextLb()"
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class="absolute right-2 sm:right-5 top-1/2 -translate-y-1/2 z-20 w-10 h-10 rounded-full border border-black/15 bg-white/75 text-[#111] flex items-center justify-center backdrop-blur-md hover:scale-105 hover:border-black/30 transition-all cursor-pointer"
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aria-label={t('Next image')}
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>
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<svg class="w-5 h-5 stroke-current fill-none stroke-2" viewBox="0 0 24 24"><path d="M9 6l6 6 6-6" /></svg>
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</button>
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<div
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id="lb-main"
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@click.self="closeLb()"
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class="flex-1 min-w-0 min-h-0 relative flex justify-center px-4 sm:px-18"
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x-bind:class="lbZoomed
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? 'overflow-y-auto overflow-x-hidden items-start'
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: 'items-center'"
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>
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<img
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id="lb-image"
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src=""
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alt=""
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@click="toggleZoom()"
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decoding="async"
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class="block select-none transition-opacity duration-200"
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x-bind:class="lbZoomed
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? 'w-full max-w-full h-auto max-h-none cursor-zoom-out'
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: 'max-w-full max-h-full object-contain cursor-zoom-in'"
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/>
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</div>
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</div>
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<div
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class="absolute left-0 right-0 bottom-11 z-20 text-center text-black/60 font-mono text-[11px] uppercase tracking-[0.18em] pointer-events-none px-6"
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x-text="currentImageName"
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></div>
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<div
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x-show="!lbZoomed"
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class="absolute left-0 right-0 bottom-4 z-20 text-center text-black/45 font-mono text-[11px] tracking-[0.14em] pointer-events-none px-6 transition-opacity duration-200"
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>
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{t('Click image to zoom · Scroll to view · Esc to close')}
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</div>
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</div>
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)}
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</div>
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<script>
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document.addEventListener("alpine:init", () => {
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Alpine.data("streetSnapView", () => ({
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lbOpen: false,
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lbIndex: 0,
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lbZoomed: false,
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touchStartX: 0,
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touchStartY: 0,
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imageCount: 0,
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currentImageName: "",
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init() {
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this.imageCount = document.querySelectorAll(
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"#snap-gallery [data-image-index]"
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).length
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this.initThumbLazyLoading()
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},
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getImageElement(index: number) {
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return document.querySelector<HTMLElement>(
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`#snap-gallery [data-image-index="${index}"]`
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)
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},
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getImageUrl(index: number) {
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return this.getImageElement(index)?.dataset.imageUrl || ""
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},
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getImageName(index: number) {
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return this.getImageElement(index)?.dataset.imageName || ""
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},
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openLb(index = 0) {
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if (!this.imageCount) return
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this.lbIndex = this.normalizeIndex(index)
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this.lbZoomed = false
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this.lbOpen = true
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document.body.style.overflow = "hidden"
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this.updateLightboxImage()
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requestAnimationFrame(() => {
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this.scrollThumbIntoView()
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this.preloadAround()
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})
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},
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closeLb() {
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this.lbOpen = false
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this.lbZoomed = false
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document.body.style.overflow = ""
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},
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showLb(index: number) {
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if (!this.imageCount) return
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this.lbIndex = this.normalizeIndex(index)
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this.lbZoomed = false
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this.updateLightboxImage()
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const main = document.getElementById("lb-main")
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if (main) main.scrollTop = 0
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requestAnimationFrame(() => {
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this.scrollThumbIntoView()
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this.preloadAround()
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})
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},
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nextLb() { this.showLb(this.lbIndex + 1) },
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prevLb() { this.showLb(this.lbIndex - 1) },
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normalizeIndex(index: number) {
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if (!this.imageCount) return 0
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return ((index % this.imageCount) + this.imageCount) % this.imageCount
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},
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updateLightboxImage() {
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const image = document.getElementById("lb-image") as HTMLImageElement | null
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if (!image) return
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image.src = this.getImageUrl(this.lbIndex)
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image.alt = this.getImageName(this.lbIndex)
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this.currentImageName = this.getImageName(this.lbIndex)
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},
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toggleZoom() {
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this.lbZoomed = !this.lbZoomed
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const main = document.getElementById("lb-main")
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if (main) main.scrollTop = 0
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},
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scrollThumbIntoView() {
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const thumbs = document.getElementById("lb-thumbs") as HTMLElement | null
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if (!thumbs) return
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const active = thumbs.querySelector<HTMLElement>(`[data-lb-index="${this.lbIndex}"]`)
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if (!active) return
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const target = active.offsetTop - (thumbs.clientHeight - active.clientHeight) / 2
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thumbs.scrollTo({ top: Math.max(0, target), behavior: "smooth" })
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},
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preloadAround() {
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const indexes = [this.lbIndex, this.normalizeIndex(this.lbIndex - 1), this.normalizeIndex(this.lbIndex + 1)]
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indexes.forEach((index: number) => {
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const url = this.getImageUrl(index)
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if (!url) return
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const image = new Image()
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image.decoding = "async"
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image.src = url
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})
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},
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initThumbLazyLoading() {
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const thumbs = document.querySelectorAll<HTMLElement>("#lb-thumbs [data-thumb-url]")
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if (!thumbs.length) return
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if (!("IntersectionObserver" in window)) {
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thumbs.forEach((thumb) => { thumb.style.backgroundImage = `url("${thumb.dataset.thumbUrl}")` })
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return
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}
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const observer = new IntersectionObserver(
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(entries, obs) => {
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entries.forEach((entry) => {
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if (!entry.isIntersecting) return
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const element = entry.target as HTMLElement
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const url = element.dataset.thumbUrl
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if (url) element.style.backgroundImage = `url("${url}")`
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obs.unobserve(element)
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})
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},
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{ root: document.getElementById("lb-thumbs"), rootMargin: "300px" }
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)
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thumbs.forEach((thumb) => observer.observe(thumb))
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},
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}))
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})
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</script>
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<style>
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[x-cloak] { display: none !important; }
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.no-scrollbar::-webkit-scrollbar { display: none; }
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.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
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</style>
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Reference in New Issue
Block a user