Add React + Vite port of the logo generator

Full React port sharing src/logo.js core (shadow geometry, CSS output, defaults, font list). App.jsx holds the entire state in a single useState object; controlled inputs drive the live render and generated CSS. Keeps the accessibility markup (labels, aria, <details>/<summary>, focus rings) from the html/vanilla versions; reset restores defaults via the form's onReset. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-29 12:19:30 +02:00
10 changed files with 711 additions and 351 deletions
@@ -7,7 +7,7 @@
  <link href="https://fonts.googleapis.com/css2?family=Anton&family=Bowlby+One&family=Bebas+Neue&family=Bungee&family=Passion+One:wght@900&family=Ultra&display=swap" rel="stylesheet">
 </head>
 <body>
-  <div id="app"></div>
-  <script type="module" src="/src/main.js"></script>
+  <div id="root"></div>
+  <script type="module" src="/src/main.jsx"></script>
 </body>
 </html>
@@ -1,19 +1,304 @@
 {
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+  "name": "demo-ecmascript-react",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
-      "name": "demo-ecmascript-svelte",
+      "name": "demo-ecmascript-react",
      "version": "1.0.0",
      "license": "WTFPL",
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+        "react-dom": "^19.0.0"
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-        "svelte": "^5.16.0",
+        "@vitejs/plugin-react": "^4.3.4",
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@@ -506,6 +791,13 @@
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-      "workspaces": [
-        "tests/deps/*",
-        "tests/projects/*",
-        "tests/projects/workspace/packages/*"
-      ],
-      "peerDependencies": {
-        "vite": "^3.0.0 || ^4.0.0 || ^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0"
-      },
-      "peerDependenciesMeta": {
-        "vite": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/zimmerframe": {
-      "version": "1.1.4",
-      "resolved": "https://registry.npmjs.org/zimmerframe/-/zimmerframe-1.1.4.tgz",
-      "integrity": "sha512-B58NGBEoc8Y9MWWCQGl/gq9xBCe4IiKM0a2x7GZdQKOW5Exr8S1W24J6OgM1njK8xCRGvAJIL/MxXHf6SkmQKQ==",
-      "dev": true,
-      "license": "MIT"
+      "license": "ISC"
    }
  }
 }
@@ -1,7 +1,7 @@
 {
-  "name": "demo-ecmascript-svelte",
+  "name": "demo-ecmascript-react",
  "version": "1.0.0",
-  "description": "LIBRETECH logo generator — Svelte + Vite",
+  "description": "LIBRETECH logo generator — React + Vite",
  "repository": {
    "type": "git",
    "url": "ssh://tengo@git.librete.ch:41240/public/demo-ecmascript.git"
@@ -13,9 +13,12 @@
    "build": "vite build",
    "preview": "vite preview"
  },
+  "dependencies": {
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
+  },
  "devDependencies": {
-    "@sveltejs/vite-plugin-svelte": "^5.0.3",
-    "svelte": "^5.16.0",
+    "@vitejs/plugin-react": "^4.3.4",
    "vite": "^6.0.0"
  }
 }
@@ -0,0 +1,135 @@
+import { useEffect, useState } from 'react';
+import { defaults, fonts, logoStyle, cssOutput } from './logo.js';
+
+const FONT_LABELS = { Impact: 'Impact (System)' };
+
+export default function App() {
+  const [s, setS] = useState(defaults);
+  const [copied, setCopied] = useState(false);
+
+  const set = (key) => (value) => setS((prev) => ({ ...prev, [key]: value }));
+  const num = (key) => (e) => set(key)(+e.target.value);
+  const str = (key) => (e) => set(key)(e.target.value);
+
+  useEffect(() => {
+    document.body.style.background = s.bg;
+  }, [s.bg]);
+
+  const css = cssOutput(s);
+
+  const copy = async () => {
+    try {
+      await navigator.clipboard.writeText(css);
+      setCopied(true);
+      setTimeout(() => setCopied(false), 1500);
+    } catch {
+      alert('Kopieren fehlgeschlagen — bitte manuell aus dem Code-Feld kopieren.');
+    }
+  };
+
+  // Controlled inputs are not reset by the browser, so restore defaults here.
+  const reset = (e) => {
+    e.preventDefault();
+    setS(defaults);
+  };
+
+  return (
+    <>
+      <div className="logo" style={logoStyle(s)}>{s.text || ' '}</div>
+
+      <details className="disclosure" id="panel" open>
+        <summary className="toggle-panel">Panel ein/aus</summary>
+
+        <div className="panel">
+          <h1>Logo-Generator</h1>
+
+          <form id="logoForm" onSubmit={(e) => e.preventDefault()} onReset={reset}>
+            <h2>Inhalt</h2>
+            <p className="hint" id="hint-text">Mehrere Zeilen mit Enter trennen.</p>
+            <textarea
+              id="text"
+              rows={2}
+              aria-label="Logo-Text"
+              aria-describedby="hint-text"
+              value={s.text}
+              onChange={str('text')}
+            />
+
+            <h2>Schrift</h2>
+            <select id="font" aria-label="Schriftart" value={s.font} onChange={str('font')}>
+              {fonts.map((f) => (
+                <option key={f} value={f}>{FONT_LABELS[f] || f}</option>
+              ))}
+            </select>
+
+            <div className="row-2col">
+              <div>
+                <label htmlFor="fs">Größe: <span className="val">{s.fs}</span>vw</label>
+                <input type="range" id="fs" min="6" max="30" step="0.5" value={s.fs} onChange={num('fs')} />
+              </div>
+              <div>
+                <label htmlFor="lh">Zeilenabstand: <span className="val">{s.lh.toFixed(2)}</span></label>
+                <input type="range" id="lh" min="0.5" max="2" step="0.05" value={s.lh} onChange={num('lh')} />
+              </div>
+            </div>
+            <label htmlFor="ls">Buchstabenabstand: <span className="val">{s.ls.toFixed(3)}</span>em</label>
+            <input type="range" id="ls" min="-0.15" max="0.3" step="0.005" value={s.ls} onChange={num('ls')} />
+
+            <h2>Farben</h2>
+            <ColorRow id="bg" label="Hintergrund" value={s.bg} onChange={str('bg')} />
+            <ColorRow id="face" label="Face" value={s.face} onChange={str('face')} />
+            <ColorRow id="depth" label="Tiefe" value={s.depth} onChange={str('depth')} />
+            <ColorRow id="shadow" label="Schatten & Kontur" value={s.shadow} onChange={str('shadow')} />
+
+            <h2>Lichtrichtung</h2>
+            <p className="hint">Steuert alle Versätze gleichzeitig — Schatten geht in Lichtrichtung, Tiefe entgegen.</p>
+            <label htmlFor="angle">Winkel: <span className="val">{s.angle}</span>° (0=oben, 90=rechts, 180=unten)</label>
+            <input type="range" id="angle" min="0" max="359" value={s.angle} onChange={num('angle')} />
+
+            <h2>Schichten</h2>
+            <p className="hint">Hinten nach vorn: Schatten · Tiefe · Kontur · Face</p>
+            <label htmlFor="shadow-len">Schatten-Länge: <span className="val">{s.shadowLen}</span>px</label>
+            <input type="range" id="shadow-len" min="0" max="80" value={s.shadowLen} onChange={num('shadowLen')} />
+            <label htmlFor="depth-len">Tiefe (in Gegenrichtung): <span className="val">{s.depthLen}</span>px</label>
+            <input type="range" id="depth-len" min="0" max="30" value={s.depthLen} onChange={num('depthLen')} />
+            <label htmlFor="contour-len">Kontur (vor der Tiefe): <span className="val">{s.contourLen}</span>px</label>
+            <input type="range" id="contour-len" min="0" max="20" value={s.contourLen} onChange={num('contourLen')} />
+
+            <h2>Komposition</h2>
+            <div className="row-2col">
+              <div>
+                <label htmlFor="rot">Drehung: <span className="val">{s.rot}</span>°</label>
+                <input type="range" id="rot" min="-25" max="25" value={s.rot} onChange={num('rot')} />
+              </div>
+              <div>
+                <label htmlFor="skew">Schräge: <span className="val">{s.skew}</span>°</label>
+                <input type="range" id="skew" min="-20" max="20" value={s.skew} onChange={num('skew')} />
+              </div>
+            </div>
+
+            <h2>Generiertes CSS</h2>
+            <code id="cssout">{css}</code>
+            <button
+              type="button"
+              className={'copy-btn' + (copied ? ' copied' : '')}
+              onClick={copy}
+            >
+              {copied ? 'Kopiert!' : 'CSS kopieren'}
+            </button>
+            <button type="reset" className="reset-btn">Zurücksetzen</button>
+          </form>
+        </div>
+      </details>
+    </>
+  );
+}
+
+function ColorRow({ id, label, value, onChange }) {
+  return (
+    <div className="color-row">
+      <input type="color" id={`c-${id}`} value={value} onChange={onChange} aria-labelledby={`lbl-${id}`} />
+      <span className="swatch-label" id={`lbl-${id}`}>{label}</span>
+      <span className="hex">{value}</span>
+    </div>
+  );
+}
@@ -1,133 +0,0 @@
-<script>
-  import { defaults, fonts, logoStyle, cssOutput } from './logo.js';
-
-  const FONT_LABELS = { Impact: 'Impact (System)' };
-
-  let s = $state({ ...defaults });
-  let copied = $state(false);
-
-  const css = $derived(cssOutput(s));
-  const logoCss = $derived(styleString(logoStyle(s)));
-
-  $effect(() => {
-    document.body.style.background = s.bg;
-  });
-
-  // logoStyle() returns a camelCase object; the style attribute needs a string.
-  function styleString(obj) {
-    return Object.entries(obj)
-      .map(([k, v]) => `${k.replace(/[A-Z]/g, (m) => '-' + m.toLowerCase())}:${v}`)
-      .join(';');
-  }
-
-  async function copy() {
-    try {
-      await navigator.clipboard.writeText(css);
-      copied = true;
-      setTimeout(() => (copied = false), 1500);
-    } catch {
-      alert('Kopieren fehlgeschlagen — bitte manuell aus dem Code-Feld kopieren.');
-    }
-  }
-
-  function onSubmit(e) {
-    e.preventDefault();
-  }
-
-  // bind:value owns the values, so restore defaults explicitly on reset.
-  function onReset(e) {
-    e.preventDefault();
-    s = { ...defaults };
-  }
-</script>
-
-<div class="logo" style={logoCss}>{s.text || ' '}</div>
-
-<details class="disclosure" id="panel" open>
-  <summary class="toggle-panel">Panel ein/aus</summary>
-
-  <div class="panel">
-    <h1>Logo-Generator</h1>
-
-    <form id="logoForm" onsubmit={onSubmit} onreset={onReset}>
-      <h2>Inhalt</h2>
-      <p class="hint" id="hint-text">Mehrere Zeilen mit Enter trennen.</p>
-      <textarea id="text" rows="2" aria-label="Logo-Text" aria-describedby="hint-text" bind:value={s.text}></textarea>
-
-      <h2>Schrift</h2>
-      <select id="font" aria-label="Schriftart" bind:value={s.font}>
-        {#each fonts as f}
-          <option value={f}>{FONT_LABELS[f] || f}</option>
-        {/each}
-      </select>
-
-      <div class="row-2col">
-        <div>
-          <label for="fs">Größe: <span class="val">{s.fs}</span>vw</label>
-          <input type="range" id="fs" min="6" max="30" step="0.5" bind:value={s.fs} />
-        </div>
-        <div>
-          <label for="lh">Zeilenabstand: <span class="val">{s.lh.toFixed(2)}</span></label>
-          <input type="range" id="lh" min="0.5" max="2" step="0.05" bind:value={s.lh} />
-        </div>
-      </div>
-      <label for="ls">Buchstabenabstand: <span class="val">{s.ls.toFixed(3)}</span>em</label>
-      <input type="range" id="ls" min="-0.15" max="0.3" step="0.005" bind:value={s.ls} />
-
-      <h2>Farben</h2>
-      <div class="color-row">
-        <input type="color" id="c-bg" bind:value={s.bg} aria-labelledby="lbl-bg" />
-        <span class="swatch-label" id="lbl-bg">Hintergrund</span>
-        <span class="hex">{s.bg}</span>
-      </div>
-      <div class="color-row">
-        <input type="color" id="c-face" bind:value={s.face} aria-labelledby="lbl-face" />
-        <span class="swatch-label" id="lbl-face">Face</span>
-        <span class="hex">{s.face}</span>
-      </div>
-      <div class="color-row">
-        <input type="color" id="c-depth" bind:value={s.depth} aria-labelledby="lbl-depth" />
-        <span class="swatch-label" id="lbl-depth">Tiefe</span>
-        <span class="hex">{s.depth}</span>
-      </div>
-      <div class="color-row">
-        <input type="color" id="c-shadow" bind:value={s.shadow} aria-labelledby="lbl-shadow" />
-        <span class="swatch-label" id="lbl-shadow">Schatten &amp; Kontur</span>
-        <span class="hex">{s.shadow}</span>
-      </div>
-
-      <h2>Lichtrichtung</h2>
-      <p class="hint">Steuert alle Versätze gleichzeitig — Schatten geht in Lichtrichtung, Tiefe entgegen.</p>
-      <label for="angle">Winkel: <span class="val">{s.angle}</span>° (0=oben, 90=rechts, 180=unten)</label>
-      <input type="range" id="angle" min="0" max="359" bind:value={s.angle} />
-
-      <h2>Schichten</h2>
-      <p class="hint">Hinten nach vorn: Schatten · Tiefe · Kontur · Face</p>
-      <label for="shadow-len">Schatten-Länge: <span class="val">{s.shadowLen}</span>px</label>
-      <input type="range" id="shadow-len" min="0" max="80" bind:value={s.shadowLen} />
-      <label for="depth-len">Tiefe (in Gegenrichtung): <span class="val">{s.depthLen}</span>px</label>
-      <input type="range" id="depth-len" min="0" max="30" bind:value={s.depthLen} />
-      <label for="contour-len">Kontur (vor der Tiefe): <span class="val">{s.contourLen}</span>px</label>
-      <input type="range" id="contour-len" min="0" max="20" bind:value={s.contourLen} />
-
-      <h2>Komposition</h2>
-      <div class="row-2col">
-        <div>
-          <label for="rot">Drehung: <span class="val">{s.rot}</span>°</label>
-          <input type="range" id="rot" min="-25" max="25" bind:value={s.rot} />
-        </div>
-        <div>
-          <label for="skew">Schräge: <span class="val">{s.skew}</span>°</label>
-          <input type="range" id="skew" min="-20" max="20" bind:value={s.skew} />
-        </div>
-      </div>
-
-      <h2>Generiertes CSS</h2>
-      <code id="cssout">{css}</code>
-      <button type="button" class="copy-btn" class:copied onclick={copy}>
-        {copied ? 'Kopiert!' : 'CSS kopieren'}
-      </button>
-      <button type="reset" class="reset-btn">Zurücksetzen</button>
-    </form>
-  </div>
-</details>
@@ -1,7 +0,0 @@
-import { mount } from 'svelte';
-import App from './App.svelte';
-import './style.css';
-
-const app = mount(App, { target: document.getElementById('app') });
-
-export default app;
@@ -0,0 +1,10 @@
+import { StrictMode } from 'react';
+import { createRoot } from 'react-dom/client';
+import App from './App.jsx';
+import './style.css';
+
+createRoot(document.getElementById('root')).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+);
@@ -9,7 +9,7 @@ body {
  overflow: hidden;
  transition: background 0.15s;
 }
-#app { display: contents; }
+#root { display: contents; }
 .logo {
  font-size: 18vw;
  font-weight: 400;
@@ -1,5 +0,0 @@
-import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
-
-export default {
-  preprocess: vitePreprocess(),
-};
@@ -1,6 +1,6 @@
 import { defineConfig } from 'vite';
-import { svelte } from '@sveltejs/vite-plugin-svelte';
+import react from '@vitejs/plugin-react';

 export default defineConfig({
-  plugins: [svelte()],
+  plugins: [react()],
 });