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av-sync/src/App.svelte

@@ -1,8 +1,12 @@
 <script lang="ts">
-	// time in seconds
+	import '@fontsource/b612';
+	import '@fontsource/b612/700.css';
+	import 'normalize.css/normalize.css';
+
 	import { onMount, tick } from 'svelte';
 	import SectorIndicator from './components/SectorIndicator.svelte';
 	import FlashIndicator from './components/FlashIndicator.svelte';
+	import Scale from './components/Scale.svelte';
 
 	export let frame = 0;
 	export let fps = 60;
@@ -50,6 +54,10 @@
 		</div>
 	</div>
 
+	<div class="scale">
+		<Scale {frame} {fps} />
+	</div>
+
 	{#if debug}
 		<div class="controls">
 			<input type="range" min="0" max={fps * 4} bind:value={frame} />
@@ -66,6 +74,13 @@
 		color: white;
 		--color-active: red;
 		--color-inactive: white;
+
+		display: flex;
+		flex-direction: column;
+		justify-content: space-evenly;
+		align-items: center;
+
+		font-family: 'B612', 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
 	}
 
 	.circular {
@@ -74,16 +89,16 @@
 	}
 
 	.cyclic {
-		position: absolute;
-		top: 25%;
-		left: 50%;
-		transform: translate(-50%, -50%);
 		width: 100vw;
 
 		display: flex;
 		justify-content: space-evenly;
 	}
 
+	.scale {
+		width: 80vw;
+	}
+
 	main.debug {
 		background: black;
 	}

av-sync/src/components/Scale.svelte

@@ -0,0 +1,59 @@
+<script lang="ts">
+	export let frame: number;
+	export let fps: number;
+</script>
+
+<div class="scale">
+	<div class="labels">
+		<div>Video Late</div>
+		<div>Audio Late</div>
+	</div>
+	<div class="indicator"></div>
+	<div class="ticks">
+		{#each Array.from({ length: fps }, (_, i) => i) as i}
+			<div class="tick"></div>
+		{/each}
+	</div>
+	<div class="axis"></div>
+</div>
+
+<style>
+	.scale {
+		position: relative;
+	}
+
+	.labels {
+		position: absolute;
+		top: -3vw;
+		width: 100%;
+		display: flex;
+		font-size: 2vw;
+	}
+
+	.labels > div {
+		flex-grow: 1;
+		text-align: center;
+	}
+
+	.axis {
+		position: absolute;
+		top: 50%;
+		left: 0;
+		transform: translateY(-50%);
+
+		width: 100%;
+		background: white;
+		height: 2px;
+	}
+
+	.ticks {
+		display: flex;
+		justify-content: space-between;
+	}
+
+	.tick {
+		width: 2px;
+		height: 3vh;
+		background: white;
+	}
+</style>

package.json

@@ -39,6 +39,7 @@
 		"@sveltejs/adapter-static": "^3.0.1",
 		"@sveltejs/kit": "^2.0.0",
 		"@sveltejs/vite-plugin-svelte": "^3.0.0",
+		"@tabler/icons-svelte": "^2.47.0",
 		"lodash": "^4.17.21",
 		"normalize.css": "^8.0.1",
 		"svelte": "^4.2.7",

pnpm-lock.yaml

@@ -20,6 +20,9 @@ dependencies:
   '@sveltejs/vite-plugin-svelte':
     specifier: ^3.0.0
     version: 3.0.2(svelte@4.2.9)(vite@5.0.12)
+  '@tabler/icons-svelte':
+    specifier: ^2.47.0
+    version: 2.47.0(svelte@4.2.9)
   lodash:
     specifier: ^4.17.21
     version: 4.17.21
@@ -674,6 +677,19 @@ packages:
       - supports-color
     dev: false
 
+  /@tabler/icons-svelte@2.47.0(svelte@4.2.9):
+    resolution: {integrity: sha512-xL2NyCUUhBQv0lXylgNCpfHtMW4Ihu0hCacaYXeX+NiS1LO0geqXk/0lkrBH+u/ZLX6vyqUYNFjawjzmxthFjw==}
+    peerDependencies:
+      svelte: '>=3 <5'
+    dependencies:
+      '@tabler/icons': 2.47.0
+      svelte: 4.2.9
+    dev: false
+
+  /@tabler/icons@2.47.0:
+    resolution: {integrity: sha512-4w5evLh+7FUUiA1GucvGj2ReX2TvOjEr4ejXdwL/bsjoSkof6r1gQmzqI+VHrE2CpJpB3al7bCTulOkFa/RcyA==}
+    dev: false
+
   /@tootallnate/quickjs-emscripten@0.23.0:
     resolution: {integrity: sha512-C5Mc6rdnsaJDjO3UpGW/CQTHtCKaYlScZTly4JIu97Jxo/odCiH0ITnDXSJPTOrEKk/ycSZ0AOgTmkDtkOsvIA==}
     dev: true

src/index.css

@@ -14,4 +14,8 @@ body, html {
 
 * {
   box-sizing: border-box;
+}
+
+a {
+  color: white;
 }

src/lib/BackgroundGrid.svelte

@@ -16,7 +16,8 @@
 	let verticalMargin = MARGIN_SIZE;
 	let unloaded = true;
 
-	let transparent = false;
+	export let transparent = false;
+	export let subdued = false;
 
 	function updateCounts() {
 		const gridWidth = window.innerWidth - MARGIN_SIZE;
@@ -72,6 +73,7 @@
 	class="background"
 	class:unloaded
 	class:transparent
+	class:subdued
 	class:even-vertical={verticalCount % 2 === 0}
 	style="--horizontal-count: {horizontalCount};
 					 --vertical-count: {verticalCount};
@@ -266,6 +268,13 @@
 		}
 	}
 
+	.background.subdued {
+		& .edge,
+		& .corner {
+			opacity: 0.33;
+		}
+	}
+
 	.grid {
 		display: grid;
 		grid-template-columns: repeat(var(--horizontal-count), var(--block-size));

src/lib/TestCard.svelte

@@ -6,6 +6,8 @@
 	import BrightnessGradient from '$lib/BrightnessGradient.svelte';
 	import { onMount } from 'svelte';
 
+	export let full = false;
+
 	let sizes = {
 		blockSize: 64,
 		horizontalCount: 16,
@@ -30,6 +32,7 @@
 
 <div
 	class="test-card"
+	class:full
 	style="--block-size: {sizes.blockSize}px;
 				 --horizontal-margin: {sizes.horizontalMargin}px;
 				 --vertical-margin: {sizes.verticalMargin}px;
@@ -38,8 +41,11 @@
          --column-height: {columnHeight};
          --left-column: {leftColumn};"
 >
-	<BackgroundGrid on:change={(ev) => (sizes = ev.detail)} />
+	<BackgroundGrid on:change={(ev) => (sizes = ev.detail)} subdued={!full} />
-	<Axes />
+
+	<div class="axes">
+		<Axes />
+	</div>
 
 	<div class="outer"></div>
 	<div class="inner"></div>
@@ -137,4 +143,13 @@
 			flex-grow: 1;
 		}
 	}
+
+	.test-card:not(.full) {
+		& .info,
+		& .column,
+		& .axes,
+		& .inner {
+			display: none;
+		}
+	}
 </style>

src/routes/+layout.svelte

@@ -0,0 +1,52 @@
+<script lang="ts">
+	import 'normalize.css/normalize.css';
+	import '@fontsource/b612';
+	import '@fontsource/b612/700.css';
+	import '../index.css';
+	import TestCard from '$lib/TestCard.svelte';
+	import { page } from '$app/stores';
+	import { onMount } from 'svelte';
+
+	let idleTimeout: NodeJS.Timeout | undefined;
+	onMount(() => {
+		window.addEventListener('mousemove', () => {
+			clearTimeout(idleTimeout);
+			document.body.classList.remove('idle');
+			idleTimeout = setTimeout(() => {
+				document.body.classList.add('idle');
+			}, 3000);
+		});
+	});
+
+	$: onlyCard = $page.url.pathname === '/card';
+</script>
+
+<TestCard full={onlyCard} />
+<main class:content={!onlyCard}>
+	<slot />
+</main>
+
+<style>
+	main.content {
+		position: absolute;
+		top: 50%;
+		left: 50%;
+		transform: translate(-50%, -50%);
+		max-height: 90vh;
+		max-width: 90vw;
+		background: rgba(0, 0, 0, 0.8);
+		border-radius: 0.5rem;
+		border: 1px solid white;
+
+		padding: 1rem;
+	}
+
+	:global(.hide-idle) {
+		transition: opacity 1s;
+		opacity: 1;
+	}
+
+	:global(body.idle .hide-idle) {
+		opacity: 0;
+	}
+</style>

src/routes/+page.svelte

@@ -1,9 +1,70 @@
 <script>
-	import 'normalize.css/normalize.css';
+	import {
-	import '@fontsource/b612';
+		IconCamera,
-	import '@fontsource/b612/700.css';
+		IconCpu2,
-	import '../index.css';
+		IconDeviceGamepad,
-	import TestCard from '$lib/TestCard.svelte';
+		IconKeyboard,
+		IconMicrophone,
+		IconMouse,
+		IconVideo,
+		IconVolume
+	} from '@tabler/icons-svelte';
 </script>
 
-<TestCard />
+<nav>
+	<h1>Universal Test Card</h1>
+
+	<div class="options">
+		<a href="card">
+			<div class="icon"><IconVideo size={72} /></div>
+			Video
+		</a>
+		<a href="audio">
+			<div class="icon"><IconVolume size={72} /></div>
+			Audio
+		</a>
+		<a href="keyboard">
+			<div class="icon"><IconKeyboard size={72} /></div>
+			Keyboard
+		</a>
+		<a href="mouse">
+			<div class="icon"><IconMouse size={72} /></div>
+			Mouse
+		</a>
+		<a href="gamepad">
+			<div class="icon"><IconDeviceGamepad size={72} /></div>
+			Gamepad
+		</a>
+		<a href="camera">
+			<div class="icon"><IconCamera size={72} /></div>
+			Camera
+		</a>
+		<a href="microphone">
+			<div class="icon"><IconMicrophone size={72} /></div>
+			Microphone
+		</a>
+		<a href="sensors">
+			<div class="icon"><IconCpu2 size={72} /></div>
+			Sensors
+		</a>
+	</div>
+</nav>
+
+<style>
+	h1 {
+		text-align: center;
+		font-size: 2.5rem;
+		margin: 1rem;
+	}
+
+	.options {
+		display: flex;
+		justify-content: space-evenly;
+		gap: 2em;
+
+		& a {
+			text-align: center;
+			text-decoration: none;
+		}
+	}
+</style>

src/routes/card/+page.svelte

@@ -0,0 +1,26 @@
+<script>
+	import { IconArrowBack } from '@tabler/icons-svelte';
+</script>
+
+<a href="/" class="hide-idle"><IconArrowBack /> Back</a>
+
+<style>
+	a {
+		position: absolute;
+		top: 2rem;
+		right: 2rem;
+
+		background: black;
+		border: 1px solid white;
+		border-radius: 0.2em;
+		padding: 0.5em 1em;
+
+		box-shadow: 0 0 0.5em rgba(255, 255, 255, 0.5);
+
+		display: flex;
+		gap: 0.5em;
+		align-items: center;
+
+		text-decoration: none;
+	}
+</style>

src/routes/keyboard/+page.svelte

@@ -0,0 +1,60 @@
+<script lang="ts">
+	import { onMount } from 'svelte';
+
+	let key: string;
+	let code: string;
+	let pressedKeys: string[] = [];
+	onMount(() => {
+		document.addEventListener('keydown', (event) => {
+			key = event.key;
+			code = event.code;
+			pressedKeys = [...pressedKeys, event.key];
+			pressedKeys = pressedKeys.slice(-50);
+		});
+	});
+</script>
+
+<h2>Keyboard testing</h2>
+<p>Press a key on the keyboard to see the event object and the key code.</p>
+<div class="current">
+	{#if key}
+		<span>{key}</span>
+	{/if}
+	{#if code}
+		<span class="code">({code})</span>
+	{/if}
+</div>
+
+<p>Pressed keys:</p>
+<ul>
+	{#each pressedKeys as key}
+		<li>{key}</li>
+	{/each}
+</ul>
+
+<style>
+	.current {
+		display: flex;
+	}
+
+	.code {
+		margin-left: 1em;
+		opacity: 0.8;
+	}
+
+	ul {
+		list-style: none;
+		padding: 0;
+
+		display: flex;
+		flex-wrap: wrap;
+		justify-content: safe space-evenly;
+		gap: 0.2em;
+	}
+
+	li {
+		margin: 0;
+		padding: 0;
+		display: inline-block;
+	}
+</style>