Add window setup to veggie seasons (#1049)

veggieseasons/lib/main.dart

@@ -2,13 +2,17 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'dart:io';
+
 import 'package:flutter/cupertino.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart' show DeviceOrientation, SystemChrome;
 import 'package:provider/provider.dart';
 import 'package:veggieseasons/data/app_state.dart';
 import 'package:veggieseasons/data/preferences.dart';
 import 'package:veggieseasons/screens/home.dart';
 import 'package:veggieseasons/styles.dart';
+import 'package:window_size/window_size.dart';
 
 void main() {
   WidgetsFlutterBinding.ensureInitialized();
@@ -16,6 +20,7 @@ void main() {
     DeviceOrientation.portraitUp,
     DeviceOrientation.portraitDown,
   ]);
+  setupWindow();
 
   runApp(
     const RootRestorationScope(
@@ -25,6 +30,24 @@ void main() {
   );
 }
 
+const double windowWidth = 480;
+const double windowHeight = 854;
+
+void setupWindow() {
+  if (!kIsWeb && (Platform.isWindows || Platform.isLinux || Platform.isMacOS)) {
+    setWindowTitle('Veggie Seasons');
+    setWindowMinSize(const Size(windowWidth, windowHeight));
+    setWindowMaxSize(const Size(windowWidth, windowHeight));
+    getCurrentScreen().then((screen) {
+      setWindowFrame(Rect.fromCenter(
+        center: screen!.frame.center,
+        width: windowWidth,
+        height: windowHeight,
+      ));
+    });
+  }
+}
+
 class VeggieApp extends StatefulWidget {
   const VeggieApp({Key? key}) : super(key: key);