first commit

2026-05-01 20:02:13 +02:00
commit 75fb753fc0
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+// ═══════════════════════════════════════════════════════
+// QR Code (using qrcode-generator library)
+// ═══════════════════════════════════════════════════════
+function generateQR() {
+  const data = document.getElementById('qrInput').value.trim();
+  const container = document.getElementById('qrCanvas');
+  const ph = document.getElementById('qrPlaceholder');
+  if (!data) { container.style.display = 'none'; ph.style.display = ''; return; }
+  if (typeof qrcode === 'undefined') { ph.textContent = 'Loading QR library...'; return; }
+
+  try {
+    const qr = qrcode(0, 'M');
+    qr.addData(data);
+    qr.make();
+    container.innerHTML = qr.createSvgTag({ cellSize: 4, margin: 8, scalable: true });
+    // Style the SVG
+    const svg = container.querySelector('svg');
+    if (svg) {
+      svg.style.width = '256px';
+      svg.style.height = '256px';
+      svg.style.background = '#fff';
+      svg.style.borderRadius = '12px';
+    }
+    container.style.display = '';
+    ph.style.display = 'none';
+  } catch (err) {
+    ph.textContent = err.message;
+    container.style.display = 'none';
+    ph.style.display = '';
+  }
+}
+
+function downloadQR() {
+  const container = document.getElementById('qrCanvas');
+  if (container.style.display === 'none') return;
+  const svg = container.querySelector('svg');
+  if (!svg) return;
+
+  // Convert SVG to PNG via canvas
+  const svgData = new XMLSerializer().serializeToString(svg);
+  const img = new Image();
+  img.onload = function () {
+    const canvas = document.createElement('canvas');
+    canvas.width = 512;
+    canvas.height = 512;
+    const ctx = canvas.getContext('2d');
+    ctx.fillStyle = '#ffffff';
+    ctx.fillRect(0, 0, 512, 512);
+    ctx.drawImage(img, 0, 0, 512, 512);
+    const a = document.createElement('a');
+    a.href = canvas.toDataURL('image/png');
+    a.download = 'qrcode.png';
+    a.click();
+  };
+  img.src = 'data:image/svg+xml;base64,' + btoa(unescape(encodeURIComponent(svgData)));
+}