Refactor. Fires marker calibration

lib/fireMarkerIcon.dart

@@ -0,0 +1,27 @@
+import 'package:flutter/material.dart';
+import 'fireMarkType.dart';
+import 'colors.dart';
+
+class FireMarkerIcon extends StatelessWidget {
+
+  final FireMarkType type;
+
+  FireMarkerIcon(this.type);
+
+  @override
+  Widget build(BuildContext context) {
+    switch (type) {
+      case FireMarkType.position:
+        return new Icon(Icons.location_on, color: fires600, size: 50.0);
+      case FireMarkType.pixel:
+        return new Icon(Icons.brightness_1, color: fires900, size: 3.0);
+      case FireMarkType.fire:
+        return new Image.asset('images/fire-marker-l.png');
+      case FireMarkType.industry:
+        return new Image.asset('images/industry-marker-reg.png');
+      case FireMarkType.falsePos:
+      default:
+        return new Image.asset('images/industry-marker.png');
+    }
+  }
+}