TF-4171 Display tag in mailbox list

core/lib/utils/widget_utils.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+
+class WidgetUtils {
+  WidgetUtils._();
+
+  static double measureTextWidth({
+    required String text,
+    double fallbackWidth = 0,
+    TextStyle? style,
+    Locale? locale,
+    double? horizontalPadding,
+  }) {
+    try {
+      final textPainter = TextPainter(
+        text: TextSpan(
+          text: text,
+          style: style,
+          locale: locale,
+        ),
+        maxLines: 1,
+        textDirection: TextDirection.ltr,
+      )..layout();
+
+      if (horizontalPadding != null) {
+        return textPainter.width + horizontalPadding * 2;
+      } else {
+        return textPainter.width;
+      }
+    } catch (e) {
+      return fallbackWidth;
+    }
+  }
+}