feat: gestione trattini verticali | come accordi e allineamento grafico

src/app/components/qr-scanner/qr-scanner.component.html

@@ -12,8 +12,12 @@
     <zxing-scanner
       [formats]="allowedFormats"
       [device]="currentDevice"
+      [autostart]="true"
+      [tryHarder]="false"
       (camerasFound)="onCamerasFound($event)"
-      (scanSuccess)="onCodeResult($event)">
+      (scanSuccess)="onCodeResult($event)"
+      (scanError)="onScanError($event)"
+      (scanFailure)="onScanFailure($event)">
     </zxing-scanner>
     
     <div class="scan-overlay">

src/app/components/qr-scanner/qr-scanner.component.ts

@@ -55,6 +55,21 @@ export class QrScannerComponent {
     }
   }
 
+  onScanError(error: any) {
+    // Silenzia e ignora gli errori interni della libreria zxing
+    try {
+      if (error) {
+        // Previeni la propagazione a livello di window/console
+        if (typeof error.preventDefault === 'function') error.preventDefault();
+        if (typeof error.stopPropagation === 'function') error.stopPropagation();
+      }
+    } catch(e) {}
+  }
+
+  onScanFailure(failure: any) {
+    // Ignora i tentativi falliti di decodifica frame per frame
+  }
+
   cancel() {
     this.modalCtrl.dismiss();
   }