immich/web/src/lib/components/shared-components/theme-button.svelte

<script lang="ts">
	import { browser } from '$app/environment';
	import { colorTheme } from '$lib/stores/preferences.store';
	import IconButton from '../elements/buttons/icon-button.svelte';

	const toggleTheme = () => {
		$colorTheme = $colorTheme === 'dark' ? 'light' : 'dark';
	};

	$: {
		if (browser) {
			if ($colorTheme === 'light') {
				document.documentElement.classList.remove('dark');
			} else {
				document.documentElement.classList.add('dark');
			}
		}
	}
</script>

<IconButton on:click={toggleTheme} title="Toggle theme">
	{#if $colorTheme === 'light'}
		<svg class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"
			><path d="M17.293 13.293A8 8 0 016.707 2.707a8.001 8.001 0 1010.586 10.586z" /></svg
		>
	{:else}
		<svg class="w-6 h-6" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"
			><path
				d="M10 2a1 1 0 011 1v1a1 1 0 11-2 0V3a1 1 0 011-1zm4 8a4 4 0 11-8 0 4 4 0 018 0zm-.464 4.95l.707.707a1 1 0 001.414-1.414l-.707-.707a1 1 0 00-1.414 1.414zm2.12-10.607a1 1 0 010 1.414l-.706.707a1 1 0 11-1.414-1.414l.707-.707a1 1 0 011.414 0zM17 11a1 1 0 100-2h-1a1 1 0 100 2h1zm-7 4a1 1 0 011 1v1a1 1 0 11-2 0v-1a1 1 0 011-1zM5.05 6.464A1 1 0 106.465 5.05l-.708-.707a1 1 0 00-1.414 1.414l.707.707zm1.414 8.486l-.707.707a1 1 0 01-1.414-1.414l.707-.707a1 1 0 011.414 1.414zM4 11a1 1 0 100-2H3a1 1 0 000 2h1z"
				fill-rule="evenodd"
				clip-rule="evenodd"
			/></svg
		>
	{/if}
</IconButton>