Can show expense in full screen

moneymgr_mobile/lib/widgets/expense_editor.dart

@@ -99,6 +99,19 @@ class ExpenseEditor extends HookConsumerWidget {
       }
     }
 
+    // Open invoice in full screen
+    handleFullScreenInvoice() {
+      showDialog(
+        context: context,
+        builder: (c) => Scaffold(
+          appBar: AppBar(title: Text("Expense")),
+          body: SingleChildScrollView(
+            child: PDFViewer(pdfBytes: file, fit: BoxFit.fitWidth),
+          ),
+        ),
+      );
+    }
+
     return Scaffold(
       appBar: AppBar(
         title: Text("Expense info"),
@@ -130,7 +143,10 @@ class ExpenseEditor extends HookConsumerWidget {
         children: [
           // Expense preview
           Expanded(
-            child: PDFViewer(pdfBytes: file, fit: BoxFit.contain),
+            child: GestureDetector(
+              onTap: handleFullScreenInvoice,
+              child: PDFViewer(pdfBytes: file, fit: BoxFit.contain),
+            ),
           ),
 
           SizedBox(height: 10),