Flutter 튜토리얼 61편: 데스크톱 앱 개발

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import 'dart:ffi';
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import 'package:ffi/ffi.dart';
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// Win32 API 호출 예제
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typedef MessageBoxNative = Int32 Function(
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  IntPtr hWnd,
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  Pointer<Utf16> lpText,
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  Pointer<Utf16> lpCaption,
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  Uint32 uType,
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);
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typedef MessageBoxDart = int Function(
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  int hWnd,
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  Pointer<Utf16> lpText,
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  Pointer<Utf16> lpCaption,
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  int uType,
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);
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void showWindowsMessageBox(String title, String message) {
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  final user32 = DynamicLibrary.open('user32.dll');
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  final messageBox = user32
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      .lookupFunction<MessageBoxNative, MessageBoxDart>('MessageBoxW');
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  final titlePointer = title.toNativeUtf16();
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  final messagePointer = message.toNativeUtf16();
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  messageBox(0, messagePointer, titlePointer, 0);
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  calloc.free(titlePointer);
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  calloc.free(messagePointer);
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}

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import 'package:win32/win32.dart';
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void showNotification() {
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  // Windows 토스트 알림, 레지스트리 접근 등
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  // win32 패키지가 제공하는 간편한 API 사용
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}

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import 'package:fluent_ui/fluent_ui.dart';
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class WindowsApp extends StatelessWidget {
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  @override
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  Widget build(BuildContext context) {
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    return FluentApp(
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      title: 'Windows App',
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      theme: FluentThemeData.light(),
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      darkTheme: FluentThemeData.dark(),
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      home: NavigationView(
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        appBar: NavigationAppBar(
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          title: Text('Windows Style App'),
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        ),
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        pane: NavigationPane(
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          selected: 0,
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          items: [
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            PaneItem(
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              icon: Icon(FluentIcons.home),
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              title: Text('Home'),
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              body: Center(child: Text('홈 화면')),
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            ),
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            PaneItem(
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              icon: Icon(FluentIcons.settings),
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              title: Text('Settings'),
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              body: Center(child: Text('설정 화면')),
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            ),
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          ],
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        ),
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      ),
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    );
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  }
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}

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import 'package:flutter/cupertino.dart';
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class MacOSApp extends StatelessWidget {
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  @override
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  Widget build(BuildContext context) {
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    return CupertinoApp(
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      title: 'macOS App',
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      theme: CupertinoThemeData(
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        primaryColor: CupertinoColors.systemBlue,
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      ),
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      home: CupertinoPageScaffold(
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        navigationBar: CupertinoNavigationBar(
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          middle: Text('macOS Style App'),
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        ),
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        child: SafeArea(
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          child: Center(
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            child: CupertinoButton.filled(
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              child: Text('버튼'),
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              onPressed: () {},
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            ),
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          ),
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        ),
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      ),
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    );
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  }
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}

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import 'package:macos_ui/macos_ui.dart';
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class MacOSNativeApp extends StatelessWidget {
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  @override
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  Widget build(BuildContext context) {
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    return MacosApp(
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      title: 'macOS Native App',
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      theme: MacosThemeData.light(),
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      darkTheme: MacosThemeData.dark(),
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      home: MacosWindow(
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        sidebar: Sidebar(
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          minWidth: 200,
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          builder: (context, scrollController) {
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            return SidebarItems(
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              currentIndex: 0,
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              items: [
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                SidebarItem(
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                  leading: MacosIcon(CupertinoIcons.home),
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                  label: Text('Home'),
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                ),
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                SidebarItem(
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                  leading: MacosIcon(CupertinoIcons.settings),
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                  label: Text('Settings'),
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                ),
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              ],
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              onChanged: (index) {},
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            );
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          },
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        ),
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        child: Center(child: Text('Content')),
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      ),
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    );
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  }
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}

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<!-- macos/Runner/Release.entitlements -->
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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    <!-- 앱 샌드박스 활성화 -->
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    <key>com.apple.security.app-sandbox</key>
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    <true/>
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    <!-- 네트워크 클라이언트 접근 -->
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    <key>com.apple.security.network.client</key>
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    <true/>
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    <!-- 사용자 선택 파일 읽기 -->
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    <key>com.apple.security.files.user-selected.read-only</key>
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    <true/>
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    <!-- 카메라 접근 -->
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    <key>com.apple.security.device.camera</key>
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    <true/>
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</dict>
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</plist>

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import 'dart:ffi';
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// C 함수 시그니처 정의
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typedef NativeAdd = Int32 Function(Int32 a, Int32 b);
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typedef DartAdd = int Function(int a, int b);
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int callNativeAdd(int a, int b) {
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  // 공유 라이브러리 로드
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  final dylib = DynamicLibrary.open('libmylib.so');
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  // 함수 룩업
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  final add = dylib.lookupFunction<NativeAdd, DartAdd>('add');
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  return add(a, b);
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}

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import 'package:desktop_notifications/desktop_notifications.dart';
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Future<void> showLinuxNotification() async {
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  final client = NotificationsClient();
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  await client.notify(
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    'Flutter 앱',
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    body: '알림 내용입니다.',
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    expireTimeout: Duration(seconds: 5),
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  );
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  await client.close();
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}