前端实现列表紧凑显示

web/src/lib/components/photo/PhotoCard.svelte

@@ -5,10 +5,11 @@
 	 * @typedef {Object} PhotoCardProps
 	 * @property {import('$lib/api/types').Photo} photo
 	 * @property {(photoId: number, previewSrc: string) => void} [onUpgradeQuality]
+	 * @property {boolean} borderLess
 	 */
 
 	/** @type {PhotoCardProps} */
-	let { photo, onUpgradeQuality } = $props();
+	let { photo, onUpgradeQuality, borderLess } = $props();
 
 	// 使用 $derived 确保响应式更新
 	let previewSrc = $derived(`/api/v1/photo/${photo.id}/preview`);
@@ -27,7 +28,7 @@
 </script>
 
 <a href={resolve(`/photo/${photo.id}`)} class="photo-card">
-	<div class="photo-wrapper">
+	<div class="photo-wrapper" class:photo-borderless={borderLess}>
 		{#if photo.mimeType?.startsWith('video/')}
 			<div class="video-indicator">🎬</div>
 			<div class="photo-placeholder">
@@ -48,7 +49,7 @@
 			/>
 		{/if}
 	</div>
-	<p class="photo-name">{photo.fileName}</p>
+		<p class="photo-name" class:photo-name-hide={borderLess}>{photo.fileName}</p>
 </a>
 
 <style>
@@ -66,6 +67,13 @@
         overflow: hidden;
         margin-bottom: var(--space-sm);
         box-shadow: var(--shadow-sm);
+				transition: border-radius 0.25s ease-out, margin-bottom 0.25s ease-out;
+    }
+
+		.photo-borderless {
+				border-radius: 0;
+				margin-bottom: 0;
+				box-shadow: none;
 		}
 
     .photo-wrapper img {
@@ -114,5 +122,9 @@
         text-overflow: ellipsis;
         white-space: nowrap;
         padding: 0 var(--space-xs);
+				transition: visibility var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
+    }
+		.photo-name-hide {
+				display: none;
 		}
 </style>

web/src/lib/components/photo/PhotoGrid.svelte

@@ -13,6 +13,7 @@
 	 * @property {(photoId: number, previewSrc: string) => void} [onUpgradeQuality]
 	 * @property {HTMLDivElement | null} [scrollContainer]
 	 * @property {HTMLDivElement | null} [loadMoreTrigger]
+	 * @property {boolean} borderLess
 	 */
 
 	/** @type {PhotoGridProps} */
@@ -24,7 +25,8 @@
 		totalPhotos = 0,
 		onUpgradeQuality,
 		scrollContainer = $bindable(null),
-		loadMoreTrigger = $bindable(null)
+		loadMoreTrigger = $bindable(null),
+		borderLess
 	} = $props();
 
 	function getVisiblePhotos() {
@@ -36,9 +38,9 @@
 	<Empty message={m.no_photos()} icon="📷" />
 {:else}
 	<div class="photo-scroll-container" bind:this={scrollContainer}>
-		<div class="photo-grid">
+		<div class="photo-grid" class:photo-grid-borderless={borderLess}>
 			{#each getVisiblePhotos() as photo (photo.id)}
-				<PhotoCard {photo} {onUpgradeQuality} />
+				<PhotoCard {photo} {onUpgradeQuality} {borderLess} />
 			{/each}
 		</div>
 
@@ -90,6 +92,11 @@
         grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
         gap: var(--space-md);
         padding-bottom: var(--space-xl);
+        transition: gap 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+    }
+
+    .photo-grid-borderless {
+        gap: 0;
     }
 
     @media (min-width: 768px) {

web/src/lib/components/ui/SegmentedControl.svelte

@@ -0,0 +1,95 @@
+<script>
+	/**
+	 * @typedef {Object} ToggleOptionItem
+	 * @property {string} value - 选项值
+	 * @property {string} label - 显示文字
+	 * @property {string} [icon] - 图标（emoji 或文字图标）
+	 */
+
+	/**
+	 * @typedef {Object} SegmentedControlProps
+	 * @property {string} value - 当前选中的值
+	 * @property {(value: string) => void} onchange
+	 * @property {ToggleOptionItem[]} options - 选项列表
+	 * @property {'small' | 'medium' | 'large'} [size]
+	 */
+
+	/** @type {SegmentedControlProps} */
+	let { value, onchange, options, size = 'medium' } = $props();
+</script>
+
+<div class="segmented-control size-{size}" role="group">
+	{#each options as option (option.value)}
+		<button
+			type="button"
+			class="option"
+			class:active={value === option.value}
+			onclick={() => onchange(option.value)}
+			aria-pressed={value === option.value}
+		>
+			{#if option.icon}
+				<span class="icon">{option.icon}</span>
+			{/if}
+			<span class="label">{option.label}</span>
+		</button>
+	{/each}
+</div>
+
+<style>
+	.segmented-control {
+		display: inline-flex;
+		background: var(--color-bg-tertiary);
+		border-radius: var(--radius-md);
+		padding: 2px;
+		gap: 2px;
+		position: relative;
+	}
+
+	.option {
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		gap: var(--space-xs);
+		padding: 0.375rem 0.75rem;
+		border: none;
+		border-radius: calc(var(--radius-md) - 2px);
+		background: transparent;
+		color: var(--color-text-secondary);
+		font-size: var(--font-size-sm);
+		font-weight: var(--font-weight-medium);
+		cursor: pointer;
+		transition: all var(--transition-normal);
+		white-space: nowrap;
+	}
+
+	.option:hover:not(:disabled) {
+		color: var(--color-text);
+	}
+
+	.option.active {
+		background: var(--color-bg);
+		color: var(--color-text);
+		box-shadow: var(--shadow-sm);
+	}
+
+	.icon {
+		font-size: 1em;
+		line-height: 1;
+	}
+
+	/* Sizes */
+	.size-small .option {
+		padding: 0.25rem 0.5rem;
+		font-size: var(--font-size-xs);
+	}
+
+	.size-medium .option {
+		padding: 0.375rem 0.75rem;
+		font-size: var(--font-size-sm);
+	}
+
+	.size-large .option {
+		padding: 0.5rem 1rem;
+		font-size: var(--font-size-base);
+	}
+</style>

web/src/lib/components/ui/index.js

@@ -4,3 +4,4 @@ export { default as Container } from './Container.svelte';
 export { default as Grid } from './Grid.svelte';
 export { default as Empty } from './Empty.svelte';
 export { default as Loading } from './Loading.svelte';
+export { default as SegmentedControl } from './SegmentedControl.svelte';

web/src/routes/album/[id]/+page.svelte

@@ -5,7 +5,7 @@
 	import { albums, back, photo_count, loading } from '$lib/paraglide/messages';
 	import { resolve } from '$app/paths';
 	import { SvelteSet } from 'svelte/reactivity';
-	import { Container, PageHeader, BackLink, PhotoGrid, Empty } from '$lib/components';
+	import { Container, PageHeader, BackLink, PhotoGrid, Empty, SegmentedControl } from '$lib/components';
 
 	let { data } = $props();
 
@@ -16,6 +16,7 @@
 	let hasMore = $derived(data.hasMore ?? false);
 
 	// 所有已加载的照片（支持分页追加）
+	/** @type {import('$lib/api/types').Photo[]} */
 	let allPhotos = $state([]);
 
 	// 分批加载配置 - 前端虚拟滚动
@@ -36,6 +37,13 @@
 	// 已升级质量的图片 ID 集合，避免重复升级
 	let upgradedPhotoIds = new SvelteSet();
 
+	let viewMode = $state('card');
+
+	const viewOptions = [
+		{ value: 'card', label: '卡片', icon: '🖼️' },
+		{ value: 'borderless', label: '紧凑', icon: '📐' }
+	];
+
 	// 监听数据变化，重置状态
 	$effect(() => {
 		if (data.photos) {
@@ -143,11 +151,22 @@
 <Container size="wide">
 	<PageHeader
 		title={album?.name || loading()}
-		subtitle={album ? photo_count({ count: data.totalPhotos || allPhotos.length }) : undefined}
 	>
 		<BackLink href={resolve('/')} text={back()} />
 	</PageHeader>
 
+	{#if album && allPhotos.length > 0}
+		<div class="subtitle-bar">
+			<span class="photo-count">{photo_count({ count: data.totalPhotos || allPhotos.length })}</span>
+			<SegmentedControl
+				value={viewMode}
+				onchange={(v) => viewMode = v}
+				options={viewOptions}
+				size="small"
+			/>
+		</div>
+	{/if}
+
 	{#if !album || (allPhotos.length === 0 && !hasMore)}
 		<Empty message={m.no_photos()} icon="📷" />
 	{:else}
@@ -160,6 +179,21 @@
 			onUpgradeQuality={upgradePhotoQuality}
 			bind:scrollContainer
 			bind:loadMoreTrigger
+			borderLess={viewMode === 'borderless'}
 		/>
 	{/if}
 </Container>
+
+<style>
+	.subtitle-bar {
+		display: flex;
+		justify-content: space-between;
+		align-items: center;
+		margin-bottom: var(--space-md);
+	}
+
+	.photo-count {
+		font-size: var(--font-size-base);
+		color: var(--color-text-secondary);
+	}
+</style>