fix: detect if quickemu is insalled

lib/main.dart

@@ -58,8 +58,11 @@ void main() async {
   // Don't forget to also change the size in linux/my_application.cc:50
   setWindowMinSize(const Size(692, 580));
   setWindowMaxSize(const Size(692, 580));
-  gOperatingSystems = await loadOperatingSystems(false);
-  AppVersion.packageInfo = await PackageInfo.fromPlatform();
+  final foundQuickGet = await Process.run('which', ['quickget']);
+  if (foundQuickGet.exitCode == 0) {
+    gOperatingSystems = await loadOperatingSystems(false);
+    AppVersion.packageInfo = await PackageInfo.fromPlatform();
+  }
   runApp(
     MultiProvider(
       providers: [

lib/src/app.dart

@@ -2,8 +2,10 @@ import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
-import 'package:provider/provider.dart';
 import 'package:gettext_i18n/gettext_i18n.dart';
+import 'package:provider/provider.dart';
+import 'package:quickgui/src/mixins/app_version.dart';
+import 'package:quickgui/src/pages/deget_not_found_page.dart';
 import 'package:quickgui/src/supported_locales.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
@@ -40,13 +42,15 @@ class _AppState extends State<App> with PreferencesMixin {
               theme: ThemeData(primarySwatch: Colors.pink),
               darkTheme: ThemeData.dark(),
               themeMode: appSettings.themeMode,
-              home: const MainPage(),
+              home: AppVersion.packageInfo == null
+                  ? const DebgetNotFoundPage()
+                  : const MainPage(),
               supportedLocales: supportedLocales.map((s) => s.contains("_")
                   ? Locale(s.split("_")[0], s.split("_")[1])
                   : Locale(s)),
               localizationsDelegates: [
                 GettextLocalizationsDelegate(),
-                GlobalMaterialLocalizations.delegate,
+                ...GlobalMaterialLocalizations.delegates,
                 GlobalWidgetsLocalizations.delegate,
               ],
               locale:

lib/src/pages/deget_not_found_page.dart

@@ -0,0 +1,60 @@
+import 'package:flutter/gestures.dart';
+import 'package:flutter/material.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+class DebgetNotFoundPage extends StatelessWidget {
+  const DebgetNotFoundPage({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Text(
+              'quickemu was not found in your PATH',
+              style: TextStyle(
+                fontSize: 24,
+              ),
+            ),
+            const SizedBox(
+              height: 16,
+            ),
+            const Text(
+              'Please install it and try again.',
+              style: TextStyle(
+                fontSize: 24,
+              ),
+            ),
+            const SizedBox(
+              height: 16,
+            ),
+            Text.rich(
+              TextSpan(
+                style: const TextStyle(
+                  fontSize: 16,
+                ),
+                text: 'See ',
+                children: [
+                  TextSpan(
+                    recognizer: TapGestureRecognizer()
+                      ..onTap = () {
+                        launchUrl(
+                          Uri.parse(
+                              'https://github.com/quickemu-project/quickemu'),
+                        );
+                      },
+                    text: 'github.com/quickemu-project/quickemu',
+                    style: const TextStyle(color: Colors.blue),
+                  ),
+                  const TextSpan(text: ' for more information'),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

pubspec.yaml

@@ -53,6 +53,7 @@ dependencies:
   desktop_notifications: ^0.6.1
   flutter_svg: ^0.23.0
   gettext_i18n: ^1.0.2
+  url_launcher: ^6.1.6
 
 dev_dependencies:
   flutter_test: