Rinze/src/lib/components/GalleryImage.svelte

<script>
	export let src;
	export let alt;

	let shown;

	function open() {
		if (shown) {
			window.open(src, '_blank');
		}
	}
</script>

<div class="gallery__image">
	<img {src} {alt} on:click={() => (shown = !shown)} />
	<div class:gallery__popup={true} class:gallery__popup--hidden={!shown}>
		<img class="gallery__popup-image" {src} {alt} on:click={open} draggable="false" />
		<div class="gallery__exit" on:click={() => (shown = !shown)}>x</div>
	</div>
</div>