Merge pull request 'feat: Sticky navbar' (#30) from component/navbar into main

Reviewed-on: #30

src/routes/+layout.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
 	import '../app.css';
 	import { page } from '$app/stores';
+	import { name } from '$content/metadata.json';
 	import Footer from "./Footer.svelte";
 	import Navbar from "./Navbar.svelte";
 	import PageTransition from "./PageTransition.svelte";
@@ -11,7 +12,8 @@
 <!-- Homepage has its own navbar with animations -->
 {#if $page.url.pathname != "/"}
 	<div id="layout">
-		<div id="navbar">
+		<div id="nav">
+			<p id="bio-name">{name}</p>
 			<Navbar />
 			<slot name="header" />
 		</div>
@@ -31,6 +33,12 @@
 {/if}
 
 <style>
+	#bio-name {
+		font-family: serif;
+		font-size: 3rem;
+		font-weight: normal;
+		color: var(--name);
+	}
 	#layout {
 		max-width: max(80vw, 100vh);
 		margin-left: auto;
@@ -58,7 +66,7 @@
 		width: min(100vw, max(50vw, 100vh));
 		grid-area: content;
 	}
-	#navbar {
+	#nav {
 		align-self: right;
 		padding-left: 10px;
 		grid-area: nav;

src/routes/Navbar.svelte

@@ -1,43 +1,95 @@
 <script lang="ts">
 	import { page } from '$app/stores';
 	import { routes } from "$lib/sitemap.ts"
-	import { name } from '$content/metadata.json';
 	import ThemeSwitch from "$lib/components/ThemeSwitch.svelte"
-	import { Rss } from "lucide-svelte";
+	import { Rss, Menu } from "lucide-svelte";
 
 	function isCurrentLink(pathname, route) {
 		return route != "/" && pathname.startsWith(route)
 			 || route == "/post" && pathname.startsWith("/page");
 	}
+
+	import { onMount } from 'svelte';
+
+	let showDropdown = false;
+
+	function onDropdownToggle(event) {
+		showDropdown = !showDropdown;
+	}
+	function onKeyDown(event) {
+		if (event.key == "Escape") {
+			showDropdown = !showDropdown;
+		}
+	}
 </script>
 
-<div id="navbar" class="h-5 space-x-4">
-	<p id="bio-name">{name}</p>
-	{#each routes as item}
-		<a
-			class="nav-link"
-			class:disabled-link={item.disabled}
-			class:current-link={isCurrentLink($page.url.pathname, item.route)}
-			href={item.route}>{item.name}</a>
-	{/each}
-	<a class="nav-link icon" href="/rss.xml"><Rss /></a>
-	<div><ThemeSwitch /></div>
-</div>
+<nav
+	id="navbar"
+	class="h-5 space-x-4"
+	class:dropdown-opened={showDropdown}>
+	<div
+		class="link-container"
+		role="button"
+		tabindex={0}
+		on:keydown={onKeyDown}
+		on:click={() => { showDropdown = false; }}
+	>
+		{#each routes as item}
+			<a
+				class="nav-link"
+				class:disabled-link={item.disabled}
+				class:current-link={isCurrentLink($page.url.pathname, item.route)}
+				on:click={() => { showDropdown = false; }}
+				href={item.route}>
+				{item.name}
+			</a>
+		{/each}
+		<a class="nav-link icon" href="/rss.xml"><Rss /></a>
+		<div><ThemeSwitch /></div>
+	</div>
+	<button
+		id="dropdown-toggle"
+		aria-hidden="true"
+		on:click={onDropdownToggle}>
+		<Menu />
+	</button>
+</nav>
+
+<svelte:window on:keydown={onKeyDown} />
 
 <style>
-	#bio-name {
-		font-family: serif;
-		font-size: 3rem;
-		font-weight: normal;
-		color: var(--name);
-	}
-	#navbar {
+	.link-container {
 		display: flex;
 		flex-direction: column;
 		align-items: flex-end;
-		justify-content: between;
+		position: sticky;
+		top: 0;
 	}
-	@media (max-width: 700px) {
+	#dropdown-toggle {
+		display: none;
+	}
+
+	/* mobile mode */
+	@media (max-width: 768px) {
+		.link-container {
+			position: fixed;
+			top: 0;
+			left: 0;
+			right: 0;
+			height: 100vh;
+			justify-content: center;
+
+			margin: 0;
+			padding-left: 5vw;
+			padding-right: 5vw;
+
+			background: hsl(var(--background) / .8);
+
+			/* Initial hidden state */
+			opacity: 0;
+			transform: translateY(-100%);
+			transition: transform 0.2s, opacity 0.2s;
+		}
 		#navbar {
 			display: inline-block;
 			white-space: pre-wrap;
@@ -45,5 +97,14 @@
 		#navbar .nav-link {
 			display: inline-block;
 		}
+		#dropdown-toggle {
+			display: initial;
+			z-index: 5;
+		}
+		.dropdown-opened > .link-container {
+			opacity: 1;
+			z-index: 1;
+			transform: translateY(0);
+		}
 	}
 </style>