misskey/src/web/app/common/views/components/url-preview.vue

<template>
	<a :href="url" target="_blank" :title="url" v-if="!fetching">
		<div class="thumbnail" v-if="thumbnail" :style="`background-image: url(${thumbnail})`"></div>
		<article>
			<header>
				<h1>{{ title }}</h1>
			</header>
			<p>{{ description }}</p>
			<footer>
				<img class="icon" v-if="icon" :src="icon"/>
				<p>{{ sitename }}</p>
			</footer>
		</article>
	</a>
</template>

<script lang="typescript">
	export default {
		props: ['url'],
		data() {
			return {
				fetching: true,
				title: null,
				description: null,
				thumbnail: null,
				icon: null,
				sitename: null
			};
		},
		created() {
			fetch('/api:url?url=' + this.url).then(res => {
				res.json().then(info => {
					this.title = info.title;
					this.description = info.description;
					this.thumbnail = info.thumbnail;
					this.icon = info.icon;
					this.sitename = info.sitename;

					this.fetching = false;
				});
			});
		}
	};
</script>

<style lang="stylus" scoped>
	:scope
		display block
		font-size 16px

		> a
			display block
			border solid 1px #eee
			border-radius 4px
			overflow hidden

			&:hover
				text-decoration none
				border-color #ddd

				> article > header > h1
					text-decoration underline

			> .thumbnail
				position absolute
				width 100px
				height 100%
				background-position center
				background-size cover

				& + article
					left 100px
					width calc(100% - 100px)

			> article
				padding 16px

				> header
					margin-bottom 8px

					> h1
						margin 0
						font-size 1em
						color #555

				> p
					margin 0
					color #777
					font-size 0.8em

				> footer
					margin-top 8px
					height 16px

					> img
						display inline-block
						width 16px
						height 16px
						margin-right 4px
						vertical-align top

					> p
						display inline-block
						margin 0
						color #666
						font-size 0.8em
						line-height 16px
						vertical-align top

		@media (max-width 500px)
			font-size 8px

			> a
				border none

				> .thumbnail
					width 70px

					& + article
						left 70px
						width calc(100% - 70px)

				> article
					padding 8px

</style>