immich/web/src/lib/components/assets/thumbnail/thumbnail.svelte

<script lang="ts">
	import IntersectionObserver from '$lib/components/asset-viewer/intersection-observer.svelte';
	import { timeToSeconds } from '$lib/utils/time-to-seconds';
	import { api, AssetResponseDto, AssetTypeEnum, ThumbnailFormat } from '@api';
	import { createEventDispatcher } from 'svelte';
	import CheckCircle from 'svelte-material-icons/CheckCircle.svelte';
	import MotionPauseOutline from 'svelte-material-icons/MotionPauseOutline.svelte';
	import MotionPlayOutline from 'svelte-material-icons/MotionPlayOutline.svelte';
	import Star from 'svelte-material-icons/Star.svelte';
	import ImageThumbnail from './image-thumbnail.svelte';
	import VideoThumbnail from './video-thumbnail.svelte';

	const dispatch = createEventDispatcher();

	export let asset: AssetResponseDto;
	export let groupIndex = 0;
	export let thumbnailSize: number | undefined = undefined;
	export let format: ThumbnailFormat = ThumbnailFormat.Webp;
	export let selected = false;
	export let disabled = false;
	export let readonly = false;
	export let publicSharedKey: string | undefined = undefined;

	let mouseOver = false;

	$: dispatch('mouse-event', { isMouseOver: mouseOver, selectedGroupIndex: groupIndex });

	$: [width, height] = (() => {
		if (thumbnailSize) {
			return [thumbnailSize, thumbnailSize];
		}

		if (asset.exifInfo?.orientation === 'Rotate 90 CW') {
			return [176, 235];
		} else if (asset.exifInfo?.orientation === 'Horizontal (normal)') {
			return [313, 235];
		} else {
			return [235, 235];
		}
	})();

	const thumbnailClickedHandler = () => {
		if (!disabled) {
			dispatch('click', { asset });
		}
	};

	const onIconClickedHandler = (e: MouseEvent) => {
		e.stopPropagation();
		if (!disabled) {
			dispatch('select', { asset });
		}
	};
</script>

<IntersectionObserver once={false} let:intersecting>
	<div
		style:width="{width}px"
		style:height="{height}px"
		class="relative group {disabled ? 'bg-gray-300' : 'bg-immich-primary/20'}"
		class:cursor-not-allowed={disabled}
		class:hover:cursor-pointer={!disabled}
		on:mouseenter={() => (mouseOver = true)}
		on:mouseleave={() => (mouseOver = false)}
		on:click={thumbnailClickedHandler}
		on:keydown={thumbnailClickedHandler}
	>
		{#if intersecting}
			<div class="absolute w-full h-full z-20">
				<!-- Select asset button  -->
				{#if !readonly}
					<button
						on:click={onIconClickedHandler}
						class="absolute p-2 group-hover:block"
						class:group-hover:block={!disabled}
						class:hidden={!selected}
						class:cursor-not-allowed={disabled}
						role="checkbox"
						aria-checked={selected}
						{disabled}
					>
						{#if disabled}
							<CheckCircle size="24" class="text-zinc-800" />
						{:else if selected}
							<CheckCircle size="24" class="text-immich-primary" />
						{:else}
							<CheckCircle size="24" class="text-white/80 hover:text-white" />
						{/if}
					</button>
				{/if}
			</div>

			<div
				class="bg-gray-100 dark:bg-immich-dark-gray absolute select-none transition-transform"
				class:scale-[0.85]={selected}
			>
				<!-- Gradient overlay on hover -->
				<div
					class="absolute w-full h-full bg-gradient-to-b from-black/25 via-[transparent_25%] opacity-0 group-hover:opacity-100 transition-opacity z-10"
				/>

				<!-- Favorite asset star -->
				{#if asset.isFavorite && !publicSharedKey}
					<div class="absolute bottom-2 left-2 z-10">
						<Star size="24" class="text-white" />
					</div>
				{/if}

				<ImageThumbnail
					url={api.getAssetThumbnailUrl(asset.id, format, publicSharedKey)}
					altText={asset.exifInfo?.imageName ?? asset.id}
					widthStyle="{width}px"
					heightStyle="{height}px"
				/>

				{#if asset.type === AssetTypeEnum.Video}
					<div class="absolute w-full h-full top-0">
						<VideoThumbnail
							url={api.getAssetFileUrl(asset.id, false, true, publicSharedKey)}
							enablePlayback={mouseOver}
							durationInSeconds={timeToSeconds(asset.duration)}
						/>
					</div>
				{/if}

				{#if asset.type === AssetTypeEnum.Image && asset.livePhotoVideoId}
					<div class="absolute w-full h-full top-0">
						<VideoThumbnail
							url={api.getAssetFileUrl(asset.livePhotoVideoId, false, true, publicSharedKey)}
							pauseIcon={MotionPauseOutline}
							playIcon={MotionPlayOutline}
							showTime={false}
							playbackOnIconHover
						/>
					</div>
				{/if}
			</div>
		{/if}
	</div>
</IntersectionObserver>