response) {
+ return const BffDemoHomePage();
+ });
+ });
+ },
+ ),
+ GoRoute(
+ path: 'ui',
+ builder: (BuildContext context, GoRouterState state) {
+ return const BffDemoHomePage();
+ },
+ ),
+ ],
+ ),
+ ],
+);
+
+class BffDemoApp extends StatelessWidget {
+ const BffDemoApp({super.key});
+
+ @override
+ Widget build(BuildContext context) {
+ return MaterialApp.router(
+ routerConfig: _router,
+ title: 'BFF Demo With Flutter Frontend',
+ theme: ThemeData(
+ colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+ useMaterial3: true,
+ ),
+ );
+ }
+}
diff --git a/samples/tutorials/bff/flutter/lib/network.service.dart b/samples/tutorials/bff/flutter/lib/network.service.dart
new file mode 100644
index 000000000..92e14adad
--- /dev/null
+++ b/samples/tutorials/bff/flutter/lib/network.service.dart
@@ -0,0 +1,182 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:quiver/collection.dart';
+
+const bffScheme = 'http';
+const bffHost = '192.168.1.182';
+const bffPort = 8080;
+const bffUri = '$bffScheme://$bffHost:$bffPort';
+final httpClient = NetworkService();
+
+class JsonResponse {
+ final int status;
+ final dynamic body;
+ final String? error;
+
+ JsonResponse(this.status, this.body, this.error);
+}
+
+/// Helper to handle cookies, CSRF and JSON encoding
+///
+/// Cookies are sent back only to the server which emitted it (not to all servers from the same domain).
+///
+///
+/// CSRF token is read from XSRF-TOKEN cookie and set as X-XSRF-TOKEN header of
+/// POST, PUT and DELET requests to the server which set the cookie.
+///
+class NetworkService {
+ /// An index of cookies by server ID (combination of host and port)
+ final Map> _cookies = {};
+ final _client = HttpClient();
+ final _encoder = const JsonEncoder();
+
+ static Multimap mobileOAuth2Headers() {
+ final mobileOAuth2Headers = Multimap();
+ mobileOAuth2Headers.add('X-RESPONSE-STATUS', 'NO_CONTENT');
+ return mobileOAuth2Headers;
+ }
+
+ /*------------------*/
+ /* Public interface */
+ /*------------------*/
+ Future get(Uri uri,
+ {Multimap? headers}) async {
+ final request = await _client.getUrl(uri);
+ headers?.forEach((name, value) {
+ request.headers.add(name, value);
+ });
+
+ _addStoredCookies(request);
+
+ final response = await request.close();
+
+ _updateStoredCookies(response, _serverId(request));
+
+ return response;
+ }
+
+ Future getJson(Uri uri,
+ {Multimap? headers}) async {
+ final Multimap headersWithAccept =
+ headers ?? Multimap();
+ headersWithAccept.removeAll(HttpHeaders.acceptHeader);
+ headersWithAccept.removeAll(HttpHeaders.acceptCharsetHeader);
+ headersWithAccept.add(HttpHeaders.acceptHeader, 'application/json');
+ headersWithAccept.add(HttpHeaders.acceptCharsetHeader, 'utf-8');
+
+ final response = await get(uri, headers: headersWithAccept);
+ final stringData = await response.transform(utf8.decoder).join();
+ if (response.statusCode < 200 || response.statusCode > 299) {
+ return JsonResponse(response.statusCode, null, stringData);
+ }
+ return JsonResponse(response.statusCode, jsonDecode(stringData), null);
+ }
+
+ Future post(Uri uri,
+ {Multimap? headers, body}) async {
+ final request = await _client.postUrl(uri);
+ return _sendStateChangingRequest(request, headers, body);
+ }
+
+ Future postJson(Uri uri, dynamic body,
+ {Multimap? headers}) async {
+ return post(uri,
+ headers: _withJsonContentType(headers), body: _encoder.convert(body));
+ }
+
+ Future put(Uri uri, {headers, body, encoding}) async {
+ final request = await _client.putUrl(uri);
+ return _sendStateChangingRequest(request, headers, body);
+ }
+
+ Future putJson(Uri uri, dynamic body,
+ {Multimap? headers}) async {
+ return put(uri,
+ headers: _withJsonContentType(headers), body: _encoder.convert(body));
+ }
+
+ Future delete(Uri uri, {headers}) async {
+ final request = await _client.deleteUrl(uri);
+ return _sendStateChangingRequest(request, headers, null);
+ }
+
+ /*-----------*/
+ /* Internals */
+ /*-----------*/
+ String _serverId(HttpClientRequest request) {
+ return '${request.uri.host}:${request.uri.port}';
+ }
+
+ void _updateStoredCookies(HttpClientResponse response, String serverId) {
+ final cookies = response.cookies;
+ final now = DateTime.now();
+
+ for (final cookie in cookies) {
+ final domainCookies = _cookies[serverId] ?? [];
+ domainCookies.removeWhere((element) =>
+ now.isAfter(cookie.expires ?? now) ||
+ (cookie.name == element.name &&
+ (cookie.path ?? '') == (element.path ?? '')));
+ domainCookies.add(cookie);
+ _cookies[serverId] = domainCookies;
+ }
+ }
+
+ void _addStoredCookies(HttpClientRequest request) {
+ final cookies = _cookies[_serverId(request)] ?? [];
+ final now = DateTime.now();
+ cookies.removeWhere((element) => now.isAfter(element.expires ?? now));
+ cookies
+ .where((element) =>
+ element.path == null ||
+ request.uri.path.contains(element.path ?? ''))
+ .forEach((element) {
+ request.cookies.add(element);
+ });
+ }
+
+ void _addCsrf(String domain, HttpHeaders headers) {
+ final domainCookies = _cookies[domain] ?? [];
+ final csrfCookie = domainCookies.firstWhere(
+ (element) => element.name == 'XSRF-TOKEN',
+ orElse: () => Cookie('XSRF-TOKEN', ''));
+ if (csrfCookie.value.isNotEmpty) {
+ headers.add('X-XSRF-TOKEN', csrfCookie.value);
+ }
+ }
+
+ Future _sendStateChangingRequest(
+ HttpClientRequest request,
+ Multimap? headers,
+ dynamic body) async {
+ final serverId = _serverId(request);
+
+ headers?.forEach((name, value) {
+ request.headers.add(name, value);
+ });
+ _addCsrf(serverId, request.headers);
+
+ _addStoredCookies(request);
+
+ if (body != null) {
+ request.write(body);
+ }
+
+ final response = await request.close();
+
+ _updateStoredCookies(response, serverId);
+
+ return response;
+ }
+
+ Multimap _withJsonContentType(
+ Multimap? headers) {
+ final Multimap headersWithContentType =
+ headers ?? Multimap();
+ headersWithContentType.removeAll(HttpHeaders.contentTypeHeader);
+ headersWithContentType.add(
+ HttpHeaders.contentTypeHeader, 'application/json; charset=utf-8');
+ return headersWithContentType;
+ }
+}
diff --git a/samples/tutorials/bff/flutter/lib/user.model.dart b/samples/tutorials/bff/flutter/lib/user.model.dart
new file mode 100644
index 000000000..b7f71fed4
--- /dev/null
+++ b/samples/tutorials/bff/flutter/lib/user.model.dart
@@ -0,0 +1,111 @@
+import 'dart:async';
+import 'dart:collection';
+import 'dart:developer' as developer;
+import 'dart:io';
+
+import 'package:BFF_Flutter_UI/network.service.dart';
+import 'package:flutter/material.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+class UserModel extends ChangeNotifier {
+ var _currentUser = User.anonymous;
+ Iterable _loginOptions = List.empty();
+ Timer? _timer;
+
+ final _mobileOAuth2Headers = NetworkService.mobileOAuth2Headers();
+
+ UserModel() {
+ _fetchLoginOptions();
+ refresh();
+ }
+
+ User get current => User(
+ username: _currentUser.username,
+ roles: _currentUser.roles,
+ exp: _currentUser.exp);
+
+ Iterable get loginOptions => UnmodifiableListView(_loginOptions);
+
+ login(String loginUri) async {
+ final response = await httpClient.get(Uri.parse(loginUri),
+ headers: _mobileOAuth2Headers);
+ final location = response.headers.value(HttpHeaders.locationHeader) ?? '';
+ if (location.isNotEmpty) {
+ await launchUrl(Uri.parse(location),
+ mode: LaunchMode.externalApplication);
+ }
+ refresh();
+ }
+
+ logout() async {
+ final clientResponse = await httpClient.post(Uri.parse('$bffUri/logout'),
+ headers: _mobileOAuth2Headers);
+ if (clientResponse.statusCode >= 200 && clientResponse.statusCode < 400) {
+ final location =
+ clientResponse.headers.value(HttpHeaders.locationHeader) ?? '';
+ if (location.isNotEmpty) {
+ await launchUrl(Uri.parse(location),
+ mode: LaunchMode.externalApplication);
+ }
+ }
+ _currentUser = User.anonymous;
+ notifyListeners();
+ }
+
+ void refresh() async {
+ _timer?.cancel();
+ final response =
+ await httpClient.getJson(Uri.parse('$bffUri/bff/v1/users/me'));
+ final previousUser = _currentUser.username;
+ if (response.status == 200) {
+ final now = DateTime.now().millisecondsSinceEpoch / 1000;
+ final secondsBeforeExp = (response.body['exp'] - now).toInt();
+ if (secondsBeforeExp > 2 &&
+ response.body['username'].toString().isNotEmpty) {
+ final roles = response.body['roles'].cast();
+ _currentUser = User(
+ exp: response.body['exp'],
+ roles: roles,
+ username: response.body['username']);
+ _timer = Timer(Duration(seconds: (secondsBeforeExp * .8).toInt()),
+ () => refresh());
+ } else {
+ _currentUser = User.anonymous;
+ _timer = Timer(Duration(seconds: (10).toInt()), () => refresh());
+ }
+ } else {
+ developer.log(response.body);
+ _currentUser = User.anonymous;
+ _timer = Timer(Duration(seconds: (10).toInt()), () => refresh());
+ }
+ if (previousUser != _currentUser.username) {
+ notifyListeners();
+ }
+ }
+
+ void _fetchLoginOptions() async {
+ final response =
+ await httpClient.getJson(Uri.parse('$bffUri/login-options'));
+ if (response.status == 200) {
+ List body = response.body;
+ _loginOptions = body.map((e) => e['loginUri']);
+ } else {
+ _loginOptions = List.empty();
+ }
+ notifyListeners();
+ }
+}
+
+class User {
+ const User({required this.username, required this.roles, required this.exp});
+
+ final String username;
+ final List roles;
+ final int exp;
+
+ static const User anonymous = User(username: '', roles: [], exp: -1);
+
+ bool isAuthenticated() {
+ return username.isNotEmpty;
+ }
+}
diff --git a/samples/tutorials/bff/flutter/linux/.gitignore b/samples/tutorials/bff/flutter/linux/.gitignore
new file mode 100644
index 000000000..d3896c984
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/samples/tutorials/bff/flutter/linux/CMakeLists.txt b/samples/tutorials/bff/flutter/linux/CMakeLists.txt
new file mode 100644
index 000000000..22482804c
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/CMakeLists.txt
@@ -0,0 +1,139 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.10)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "bff_ui")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.bff_ui")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+ set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+ set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+ set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+ set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+ set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+ set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+ set(CMAKE_BUILD_TYPE "Debug" CACHE
+ STRING "Flutter build mode" FORCE)
+ set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+ "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+ target_compile_features(${TARGET} PUBLIC cxx_std_14)
+ target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+ target_compile_options(${TARGET} PRIVATE "$<$>:-O3>")
+ target_compile_definitions(${TARGET} PRIVATE "$<$>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Define the application target. To change its name, change BINARY_NAME above,
+# not the value here, or `flutter run` will no longer work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+ "main.cc"
+ "my_application.cc"
+ "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+ PROPERTIES
+ RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+ set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+ file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+ " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+ COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+ COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+ COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+ install(FILES "${bundled_library}"
+ DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+ COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+ file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+ " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+ DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+ install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+ COMPONENT Runtime)
+endif()
diff --git a/samples/tutorials/bff/flutter/linux/flutter/CMakeLists.txt b/samples/tutorials/bff/flutter/linux/flutter/CMakeLists.txt
new file mode 100644
index 000000000..d5bd01648
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+ set(NEW_LIST "")
+ foreach(element ${${LIST_NAME}})
+ list(APPEND NEW_LIST "${PREFIX}${element}")
+ endforeach(element)
+ set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+ "fl_basic_message_channel.h"
+ "fl_binary_codec.h"
+ "fl_binary_messenger.h"
+ "fl_dart_project.h"
+ "fl_engine.h"
+ "fl_json_message_codec.h"
+ "fl_json_method_codec.h"
+ "fl_message_codec.h"
+ "fl_method_call.h"
+ "fl_method_channel.h"
+ "fl_method_codec.h"
+ "fl_method_response.h"
+ "fl_plugin_registrar.h"
+ "fl_plugin_registry.h"
+ "fl_standard_message_codec.h"
+ "fl_standard_method_codec.h"
+ "fl_string_codec.h"
+ "fl_value.h"
+ "fl_view.h"
+ "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+ "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+ PkgConfig::GTK
+ PkgConfig::GLIB
+ PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+ OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+ ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+ COMMAND ${CMAKE_COMMAND} -E env
+ ${FLUTTER_TOOL_ENVIRONMENT}
+ "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+ ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+ VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+ "${FLUTTER_LIBRARY}"
+ ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/samples/tutorials/bff/flutter/linux/flutter/generated_plugin_registrant.cc b/samples/tutorials/bff/flutter/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 000000000..f6f23bfe9
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,15 @@
+//
+// Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+#include
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+ g_autoptr(FlPluginRegistrar) url_launcher_linux_registrar =
+ fl_plugin_registry_get_registrar_for_plugin(registry, "UrlLauncherPlugin");
+ url_launcher_plugin_register_with_registrar(url_launcher_linux_registrar);
+}
diff --git a/samples/tutorials/bff/flutter/linux/flutter/generated_plugin_registrant.h b/samples/tutorials/bff/flutter/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 000000000..e0f0a47bc
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+// Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif // GENERATED_PLUGIN_REGISTRANT_
diff --git a/samples/tutorials/bff/flutter/linux/flutter/generated_plugins.cmake b/samples/tutorials/bff/flutter/linux/flutter/generated_plugins.cmake
new file mode 100644
index 000000000..f16b4c342
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,24 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+ url_launcher_linux
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+ add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+ target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+ list(APPEND PLUGIN_BUNDLED_LIBRARIES $)
+ list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+ add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+ list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/samples/tutorials/bff/flutter/linux/main.cc b/samples/tutorials/bff/flutter/linux/main.cc
new file mode 100644
index 000000000..e7c5c5437
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+ g_autoptr(MyApplication) app = my_application_new();
+ return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/samples/tutorials/bff/flutter/linux/my_application.cc b/samples/tutorials/bff/flutter/linux/my_application.cc
new file mode 100644
index 000000000..0243409fa
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/my_application.cc
@@ -0,0 +1,104 @@
+#include "my_application.h"
+
+#include
+#ifdef GDK_WINDOWING_X11
+#include
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+ GtkApplication parent_instance;
+ char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+ MyApplication* self = MY_APPLICATION(application);
+ GtkWindow* window =
+ GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+ // Use a header bar when running in GNOME as this is the common style used
+ // by applications and is the setup most users will be using (e.g. Ubuntu
+ // desktop).
+ // If running on X and not using GNOME then just use a traditional title bar
+ // in case the window manager does more exotic layout, e.g. tiling.
+ // If running on Wayland assume the header bar will work (may need changing
+ // if future cases occur).
+ gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+ GdkScreen* screen = gtk_window_get_screen(window);
+ if (GDK_IS_X11_SCREEN(screen)) {
+ const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+ if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+ use_header_bar = FALSE;
+ }
+ }
+#endif
+ if (use_header_bar) {
+ GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+ gtk_widget_show(GTK_WIDGET(header_bar));
+ gtk_header_bar_set_title(header_bar, "bff_ui");
+ gtk_header_bar_set_show_close_button(header_bar, TRUE);
+ gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+ } else {
+ gtk_window_set_title(window, "bff_ui");
+ }
+
+ gtk_window_set_default_size(window, 1280, 720);
+ gtk_widget_show(GTK_WIDGET(window));
+
+ g_autoptr(FlDartProject) project = fl_dart_project_new();
+ fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+ FlView* view = fl_view_new(project);
+ gtk_widget_show(GTK_WIDGET(view));
+ gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+ fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+ gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+ MyApplication* self = MY_APPLICATION(application);
+ // Strip out the first argument as it is the binary name.
+ self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+ g_autoptr(GError) error = nullptr;
+ if (!g_application_register(application, nullptr, &error)) {
+ g_warning("Failed to register: %s", error->message);
+ *exit_status = 1;
+ return TRUE;
+ }
+
+ g_application_activate(application);
+ *exit_status = 0;
+
+ return TRUE;
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+ MyApplication* self = MY_APPLICATION(object);
+ g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+ G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+ G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+ G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+ G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+ return MY_APPLICATION(g_object_new(my_application_get_type(),
+ "application-id", APPLICATION_ID,
+ "flags", G_APPLICATION_NON_UNIQUE,
+ nullptr));
+}
diff --git a/samples/tutorials/bff/flutter/linux/my_application.h b/samples/tutorials/bff/flutter/linux/my_application.h
new file mode 100644
index 000000000..72271d5e4
--- /dev/null
+++ b/samples/tutorials/bff/flutter/linux/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+ GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif // FLUTTER_MY_APPLICATION_H_
diff --git a/samples/tutorials/bff/flutter/macos/.gitignore b/samples/tutorials/bff/flutter/macos/.gitignore
new file mode 100644
index 000000000..746adbb6b
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/.gitignore
@@ -0,0 +1,7 @@
+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/
diff --git a/samples/tutorials/bff/flutter/macos/Flutter/Flutter-Debug.xcconfig b/samples/tutorials/bff/flutter/macos/Flutter/Flutter-Debug.xcconfig
new file mode 100644
index 000000000..c2efd0b60
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Flutter/Flutter-Debug.xcconfig
@@ -0,0 +1 @@
+#include "ephemeral/Flutter-Generated.xcconfig"
diff --git a/samples/tutorials/bff/flutter/macos/Flutter/Flutter-Release.xcconfig b/samples/tutorials/bff/flutter/macos/Flutter/Flutter-Release.xcconfig
new file mode 100644
index 000000000..c2efd0b60
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Flutter/Flutter-Release.xcconfig
@@ -0,0 +1 @@
+#include "ephemeral/Flutter-Generated.xcconfig"
diff --git a/samples/tutorials/bff/flutter/macos/Flutter/GeneratedPluginRegistrant.swift b/samples/tutorials/bff/flutter/macos/Flutter/GeneratedPluginRegistrant.swift
new file mode 100644
index 000000000..8236f5728
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Flutter/GeneratedPluginRegistrant.swift
@@ -0,0 +1,12 @@
+//
+// Generated file. Do not edit.
+//
+
+import FlutterMacOS
+import Foundation
+
+import url_launcher_macos
+
+func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+ UrlLauncherPlugin.register(with: registry.registrar(forPlugin: "UrlLauncherPlugin"))
+}
diff --git a/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/project.pbxproj b/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/project.pbxproj
new file mode 100644
index 000000000..443e8a66c
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/project.pbxproj
@@ -0,0 +1,695 @@
+// !$*UTF8*$!
+{
+ archiveVersion = 1;
+ classes = {
+ };
+ objectVersion = 54;
+ objects = {
+
+/* Begin PBXAggregateTarget section */
+ 33CC111A2044C6BA0003C045 /* Flutter Assemble */ = {
+ isa = PBXAggregateTarget;
+ buildConfigurationList = 33CC111B2044C6BA0003C045 /* Build configuration list for PBXAggregateTarget "Flutter Assemble" */;
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+ );
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+ );
+ name = "Flutter Assemble";
+ productName = FLX;
+ };
+/* End PBXAggregateTarget section */
+
+/* Begin PBXBuildFile section */
+ 331C80D8294CF71000263BE5 /* RunnerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 331C80D7294CF71000263BE5 /* RunnerTests.swift */; };
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+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
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+ isa = PBXContainerItemProxy;
+ containerPortal = 33CC10E52044A3C60003C045 /* Project object */;
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+ remoteGlobalIDString = 33CC10EC2044A3C60003C045;
+ remoteInfo = Runner;
+ };
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+ };
+/* End PBXContainerItemProxy section */
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+/* Begin PBXCopyFilesBuildPhase section */
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+/* End PBXCopyFilesBuildPhase section */
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diff --git a/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 000000000..18d981003
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+
+
+
+
+ IDEDidComputeMac32BitWarning
+
+
diff --git a/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
new file mode 100644
index 000000000..e0b44387d
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -0,0 +1,98 @@
+
+
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diff --git a/samples/tutorials/bff/flutter/macos/Runner.xcworkspace/contents.xcworkspacedata b/samples/tutorials/bff/flutter/macos/Runner.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 000000000..1d526a16e
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+
+
+
+
+
diff --git a/samples/tutorials/bff/flutter/macos/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/samples/tutorials/bff/flutter/macos/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 000000000..18d981003
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+
+
+
+
+ IDEDidComputeMac32BitWarning
+
+
diff --git a/samples/tutorials/bff/flutter/macos/Runner/AppDelegate.swift b/samples/tutorials/bff/flutter/macos/Runner/AppDelegate.swift
new file mode 100644
index 000000000..d53ef6437
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/AppDelegate.swift
@@ -0,0 +1,9 @@
+import Cocoa
+import FlutterMacOS
+
+@NSApplicationMain
+class AppDelegate: FlutterAppDelegate {
+ override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
+ return true
+ }
+}
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json
new file mode 100644
index 000000000..a2ec33f19
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json
@@ -0,0 +1,68 @@
+{
+ "images" : [
+ {
+ "size" : "16x16",
+ "idiom" : "mac",
+ "filename" : "app_icon_16.png",
+ "scale" : "1x"
+ },
+ {
+ "size" : "16x16",
+ "idiom" : "mac",
+ "filename" : "app_icon_32.png",
+ "scale" : "2x"
+ },
+ {
+ "size" : "32x32",
+ "idiom" : "mac",
+ "filename" : "app_icon_32.png",
+ "scale" : "1x"
+ },
+ {
+ "size" : "32x32",
+ "idiom" : "mac",
+ "filename" : "app_icon_64.png",
+ "scale" : "2x"
+ },
+ {
+ "size" : "128x128",
+ "idiom" : "mac",
+ "filename" : "app_icon_128.png",
+ "scale" : "1x"
+ },
+ {
+ "size" : "128x128",
+ "idiom" : "mac",
+ "filename" : "app_icon_256.png",
+ "scale" : "2x"
+ },
+ {
+ "size" : "256x256",
+ "idiom" : "mac",
+ "filename" : "app_icon_256.png",
+ "scale" : "1x"
+ },
+ {
+ "size" : "256x256",
+ "idiom" : "mac",
+ "filename" : "app_icon_512.png",
+ "scale" : "2x"
+ },
+ {
+ "size" : "512x512",
+ "idiom" : "mac",
+ "filename" : "app_icon_512.png",
+ "scale" : "1x"
+ },
+ {
+ "size" : "512x512",
+ "idiom" : "mac",
+ "filename" : "app_icon_1024.png",
+ "scale" : "2x"
+ }
+ ],
+ "info" : {
+ "version" : 1,
+ "author" : "xcode"
+ }
+}
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png
new file mode 100644
index 000000000..82b6f9d9a
Binary files /dev/null and b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png differ
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png
new file mode 100644
index 000000000..13b35eba5
Binary files /dev/null and b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png differ
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_16.png b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_16.png
new file mode 100644
index 000000000..0a3f5fa40
Binary files /dev/null and b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_16.png differ
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png
new file mode 100644
index 000000000..bdb57226d
Binary files /dev/null and b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png differ
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_32.png b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_32.png
new file mode 100644
index 000000000..f083318e0
Binary files /dev/null and b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_32.png differ
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png
new file mode 100644
index 000000000..326c0e72c
Binary files /dev/null and b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png differ
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png
new file mode 100644
index 000000000..2f1632cfd
Binary files /dev/null and b/samples/tutorials/bff/flutter/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png differ
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Base.lproj/MainMenu.xib b/samples/tutorials/bff/flutter/macos/Runner/Base.lproj/MainMenu.xib
new file mode 100644
index 000000000..80e867a4e
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/Base.lproj/MainMenu.xib
@@ -0,0 +1,343 @@
+
+
+
+
+
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diff --git a/samples/tutorials/bff/flutter/macos/Runner/Configs/AppInfo.xcconfig b/samples/tutorials/bff/flutter/macos/Runner/Configs/AppInfo.xcconfig
new file mode 100644
index 000000000..e67b151b7
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/Configs/AppInfo.xcconfig
@@ -0,0 +1,14 @@
+// Application-level settings for the Runner target.
+//
+// This may be replaced with something auto-generated from metadata (e.g., pubspec.yaml) in the
+// future. If not, the values below would default to using the project name when this becomes a
+// 'flutter create' template.
+
+// The application's name. By default this is also the title of the Flutter window.
+PRODUCT_NAME = bff_ui
+
+// The application's bundle identifier
+PRODUCT_BUNDLE_IDENTIFIER = com.example.bffUi
+
+// The copyright displayed in application information
+PRODUCT_COPYRIGHT = Copyright © 2023 com.example. All rights reserved.
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Configs/Debug.xcconfig b/samples/tutorials/bff/flutter/macos/Runner/Configs/Debug.xcconfig
new file mode 100644
index 000000000..36b0fd946
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/Configs/Debug.xcconfig
@@ -0,0 +1,2 @@
+#include "../../Flutter/Flutter-Debug.xcconfig"
+#include "Warnings.xcconfig"
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Configs/Release.xcconfig b/samples/tutorials/bff/flutter/macos/Runner/Configs/Release.xcconfig
new file mode 100644
index 000000000..dff4f4956
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/Configs/Release.xcconfig
@@ -0,0 +1,2 @@
+#include "../../Flutter/Flutter-Release.xcconfig"
+#include "Warnings.xcconfig"
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Configs/Warnings.xcconfig b/samples/tutorials/bff/flutter/macos/Runner/Configs/Warnings.xcconfig
new file mode 100644
index 000000000..42bcbf478
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/Configs/Warnings.xcconfig
@@ -0,0 +1,13 @@
+WARNING_CFLAGS = -Wall -Wconditional-uninitialized -Wnullable-to-nonnull-conversion -Wmissing-method-return-type -Woverlength-strings
+GCC_WARN_UNDECLARED_SELECTOR = YES
+CLANG_UNDEFINED_BEHAVIOR_SANITIZER_NULLABILITY = YES
+CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE
+CLANG_WARN__DUPLICATE_METHOD_MATCH = YES
+CLANG_WARN_PRAGMA_PACK = YES
+CLANG_WARN_STRICT_PROTOTYPES = YES
+CLANG_WARN_COMMA = YES
+GCC_WARN_STRICT_SELECTOR_MATCH = YES
+CLANG_WARN_OBJC_REPEATED_USE_OF_WEAK = YES
+CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES
+GCC_WARN_SHADOW = YES
+CLANG_WARN_UNREACHABLE_CODE = YES
diff --git a/samples/tutorials/bff/flutter/macos/Runner/DebugProfile.entitlements b/samples/tutorials/bff/flutter/macos/Runner/DebugProfile.entitlements
new file mode 100644
index 000000000..dddb8a30c
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/DebugProfile.entitlements
@@ -0,0 +1,12 @@
+
+
+
+
+ com.apple.security.app-sandbox
+ com.apple.security.cs.allow-jit
+ com.apple.security.network.server
+
+
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Info.plist b/samples/tutorials/bff/flutter/macos/Runner/Info.plist
new file mode 100644
index 000000000..4789daa6a
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/Info.plist
@@ -0,0 +1,32 @@
+
+
+
+
+ CFBundleDevelopmentRegion
+ $(DEVELOPMENT_LANGUAGE)
+ CFBundleExecutable
+ $(EXECUTABLE_NAME)
+ CFBundleIconFile
+ CFBundleIdentifier
+ $(PRODUCT_BUNDLE_IDENTIFIER)
+ CFBundleInfoDictionaryVersion
+ 6.0
+ CFBundleName
+ $(PRODUCT_NAME)
+ CFBundlePackageType
+ APPL
+ CFBundleShortVersionString
+ $(FLUTTER_BUILD_NAME)
+ CFBundleVersion
+ $(FLUTTER_BUILD_NUMBER)
+ LSMinimumSystemVersion
+ $(MACOSX_DEPLOYMENT_TARGET)
+ NSHumanReadableCopyright
+ $(PRODUCT_COPYRIGHT)
+ NSMainNibFile
+ MainMenu
+ NSPrincipalClass
+ NSApplication
+
+
diff --git a/samples/tutorials/bff/flutter/macos/Runner/MainFlutterWindow.swift b/samples/tutorials/bff/flutter/macos/Runner/MainFlutterWindow.swift
new file mode 100644
index 000000000..3cc05eb23
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/MainFlutterWindow.swift
@@ -0,0 +1,15 @@
+import Cocoa
+import FlutterMacOS
+
+class MainFlutterWindow: NSWindow {
+ override func awakeFromNib() {
+ let flutterViewController = FlutterViewController()
+ let windowFrame = self.frame
+ self.contentViewController = flutterViewController
+ self.setFrame(windowFrame, display: true)
+
+ RegisterGeneratedPlugins(registry: flutterViewController)
+
+ super.awakeFromNib()
+ }
+}
diff --git a/samples/tutorials/bff/flutter/macos/Runner/Release.entitlements b/samples/tutorials/bff/flutter/macos/Runner/Release.entitlements
new file mode 100644
index 000000000..852fa1a47
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/Runner/Release.entitlements
@@ -0,0 +1,8 @@
+
+
+
+
+ com.apple.security.app-sandbox
+
+
diff --git a/samples/tutorials/bff/flutter/macos/RunnerTests/RunnerTests.swift b/samples/tutorials/bff/flutter/macos/RunnerTests/RunnerTests.swift
new file mode 100644
index 000000000..5418c9f53
--- /dev/null
+++ b/samples/tutorials/bff/flutter/macos/RunnerTests/RunnerTests.swift
@@ -0,0 +1,12 @@
+import FlutterMacOS
+import Cocoa
+import XCTest
+
+class RunnerTests: XCTestCase {
+
+ func testExample() {
+ // If you add code to the Runner application, consider adding tests here.
+ // See https://developer.apple.com/documentation/xctest for more information about using XCTest.
+ }
+
+}
diff --git a/samples/tutorials/bff/flutter/pubspec.lock b/samples/tutorials/bff/flutter/pubspec.lock
new file mode 100644
index 000000000..46b6219bd
--- /dev/null
+++ b/samples/tutorials/bff/flutter/pubspec.lock
@@ -0,0 +1,322 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+ async:
+ dependency: transitive
+ description:
+ name: async
+ sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.11.0"
+ boolean_selector:
+ dependency: transitive
+ description:
+ name: boolean_selector
+ sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.1.1"
+ characters:
+ dependency: transitive
+ description:
+ name: characters
+ sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.3.0"
+ clock:
+ dependency: transitive
+ description:
+ name: clock
+ sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.1.1"
+ collection:
+ dependency: transitive
+ description:
+ name: collection
+ sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.18.0"
+ fake_async:
+ dependency: transitive
+ description:
+ name: fake_async
+ sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.3.1"
+ flutter:
+ dependency: "direct main"
+ description: flutter
+ source: sdk
+ version: "0.0.0"
+ flutter_lints:
+ dependency: "direct dev"
+ description:
+ name: flutter_lints
+ sha256: a25a15ebbdfc33ab1cd26c63a6ee519df92338a9c10f122adda92938253bef04
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.0.3"
+ flutter_test:
+ dependency: "direct dev"
+ description: flutter
+ source: sdk
+ version: "0.0.0"
+ flutter_web_plugins:
+ dependency: transitive
+ description: flutter
+ source: sdk
+ version: "0.0.0"
+ go_router:
+ dependency: "direct main"
+ description:
+ name: go_router
+ sha256: c247a4f76071c3b97bb5ae8912968870d5565644801c5e09f3bc961b4d874895
+ url: "https://pub.dev"
+ source: hosted
+ version: "12.1.1"
+ http:
+ dependency: "direct main"
+ description:
+ name: http
+ sha256: "759d1a329847dd0f39226c688d3e06a6b8679668e350e2891a6474f8b4bb8525"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.1.0"
+ http_parser:
+ dependency: transitive
+ description:
+ name: http_parser
+ sha256: "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b"
+ url: "https://pub.dev"
+ source: hosted
+ version: "4.0.2"
+ lints:
+ dependency: transitive
+ description:
+ name: lints
+ sha256: "0a217c6c989d21039f1498c3ed9f3ed71b354e69873f13a8dfc3c9fe76f1b452"
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.1.1"
+ logging:
+ dependency: transitive
+ description:
+ name: logging
+ sha256: "623a88c9594aa774443aa3eb2d41807a48486b5613e67599fb4c41c0ad47c340"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.2.0"
+ matcher:
+ dependency: transitive
+ description:
+ name: matcher
+ sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+ url: "https://pub.dev"
+ source: hosted
+ version: "0.12.16"
+ material_color_utilities:
+ dependency: transitive
+ description:
+ name: material_color_utilities
+ sha256: "9528f2f296073ff54cb9fee677df673ace1218163c3bc7628093e7eed5203d41"
+ url: "https://pub.dev"
+ source: hosted
+ version: "0.5.0"
+ meta:
+ dependency: transitive
+ description:
+ name: meta
+ sha256: a6e590c838b18133bb482a2745ad77c5bb7715fb0451209e1a7567d416678b8e
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.10.0"
+ nested:
+ dependency: transitive
+ description:
+ name: nested
+ sha256: "03bac4c528c64c95c722ec99280375a6f2fc708eec17c7b3f07253b626cd2a20"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.0.0"
+ path:
+ dependency: transitive
+ description:
+ name: path
+ sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.8.3"
+ plugin_platform_interface:
+ dependency: transitive
+ description:
+ name: plugin_platform_interface
+ sha256: da3fdfeccc4d4ff2da8f8c556704c08f912542c5fb3cf2233ed75372384a034d
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.1.6"
+ provider:
+ dependency: "direct main"
+ description:
+ name: provider
+ sha256: "9a96a0a19b594dbc5bf0f1f27d2bc67d5f95957359b461cd9feb44ed6ae75096"
+ url: "https://pub.dev"
+ source: hosted
+ version: "6.1.1"
+ quiver:
+ dependency: "direct main"
+ description:
+ name: quiver
+ sha256: b1c1ac5ce6688d77f65f3375a9abb9319b3cb32486bdc7a1e0fdf004d7ba4e47
+ url: "https://pub.dev"
+ source: hosted
+ version: "3.2.1"
+ sky_engine:
+ dependency: transitive
+ description: flutter
+ source: sdk
+ version: "0.0.99"
+ source_span:
+ dependency: transitive
+ description:
+ name: source_span
+ sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.10.0"
+ stack_trace:
+ dependency: transitive
+ description:
+ name: stack_trace
+ sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.11.1"
+ stream_channel:
+ dependency: transitive
+ description:
+ name: stream_channel
+ sha256: ba2aa5d8cc609d96bbb2899c28934f9e1af5cddbd60a827822ea467161eb54e7
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.1.2"
+ string_scanner:
+ dependency: transitive
+ description:
+ name: string_scanner
+ sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.2.0"
+ term_glyph:
+ dependency: transitive
+ description:
+ name: term_glyph
+ sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.2.1"
+ test_api:
+ dependency: transitive
+ description:
+ name: test_api
+ sha256: "5c2f730018264d276c20e4f1503fd1308dfbbae39ec8ee63c5236311ac06954b"
+ url: "https://pub.dev"
+ source: hosted
+ version: "0.6.1"
+ typed_data:
+ dependency: transitive
+ description:
+ name: typed_data
+ sha256: facc8d6582f16042dd49f2463ff1bd6e2c9ef9f3d5da3d9b087e244a7b564b3c
+ url: "https://pub.dev"
+ source: hosted
+ version: "1.3.2"
+ url_launcher:
+ dependency: "direct main"
+ description:
+ name: url_launcher
+ sha256: b1c9e98774adf8820c96fbc7ae3601231d324a7d5ebd8babe27b6dfac91357ba
+ url: "https://pub.dev"
+ source: hosted
+ version: "6.2.1"
+ url_launcher_android:
+ dependency: transitive
+ description:
+ name: url_launcher_android
+ sha256: "31222ffb0063171b526d3e569079cf1f8b294075ba323443fdc690842bfd4def"
+ url: "https://pub.dev"
+ source: hosted
+ version: "6.2.0"
+ url_launcher_ios:
+ dependency: transitive
+ description:
+ name: url_launcher_ios
+ sha256: "4ac97281cf60e2e8c5cc703b2b28528f9b50c8f7cebc71df6bdf0845f647268a"
+ url: "https://pub.dev"
+ source: hosted
+ version: "6.2.0"
+ url_launcher_linux:
+ dependency: transitive
+ description:
+ name: url_launcher_linux
+ sha256: "9f2d390e096fdbe1e6e6256f97851e51afc2d9c423d3432f1d6a02a8a9a8b9fd"
+ url: "https://pub.dev"
+ source: hosted
+ version: "3.1.0"
+ url_launcher_macos:
+ dependency: transitive
+ description:
+ name: url_launcher_macos
+ sha256: b7244901ea3cf489c5335bdacda07264a6e960b1c1b1a9f91e4bc371d9e68234
+ url: "https://pub.dev"
+ source: hosted
+ version: "3.1.0"
+ url_launcher_platform_interface:
+ dependency: transitive
+ description:
+ name: url_launcher_platform_interface
+ sha256: "980e8d9af422f477be6948bdfb68df8433be71f5743a188968b0c1b887807e50"
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.2.0"
+ url_launcher_web:
+ dependency: transitive
+ description:
+ name: url_launcher_web
+ sha256: "7fd2f55fe86cea2897b963e864dc01a7eb0719ecc65fcef4c1cc3d686d718bb2"
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.2.0"
+ url_launcher_windows:
+ dependency: transitive
+ description:
+ name: url_launcher_windows
+ sha256: "7754a1ad30ee896b265f8d14078b0513a4dba28d358eabb9d5f339886f4a1adc"
+ url: "https://pub.dev"
+ source: hosted
+ version: "3.1.0"
+ vector_math:
+ dependency: transitive
+ description:
+ name: vector_math
+ sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
+ url: "https://pub.dev"
+ source: hosted
+ version: "2.1.4"
+ web:
+ dependency: transitive
+ description:
+ name: web
+ sha256: afe077240a270dcfd2aafe77602b4113645af95d0ad31128cc02bce5ac5d5152
+ url: "https://pub.dev"
+ source: hosted
+ version: "0.3.0"
+sdks:
+ dart: ">=3.2.0-194.0.dev <4.0.0"
+ flutter: ">=3.13.0"
diff --git a/samples/tutorials/bff/flutter/pubspec.yaml b/samples/tutorials/bff/flutter/pubspec.yaml
new file mode 100644
index 000000000..c29d9cef2
--- /dev/null
+++ b/samples/tutorials/bff/flutter/pubspec.yaml
@@ -0,0 +1,24 @@
+name: BFF_Flutter_UI
+description: A sample project to demo consuming a REST API through an OAuth2 BFF
+publish_to: 'none'
+version: 0.1.0
+
+environment:
+ sdk: '>=3.1.4 <4.0.0'
+
+dependencies:
+ flutter:
+ sdk: flutter
+ go_router: ^12.1.1
+ http: ^1.1.0
+ provider: ^6.1.1
+ quiver: ^3.2.1
+ url_launcher: ^6.2.1
+
+dev_dependencies:
+ flutter_test:
+ sdk: flutter
+ flutter_lints: ^2.0.0
+
+flutter:
+ uses-material-design: true
diff --git a/samples/tutorials/bff/flutter/web/favicon.png b/samples/tutorials/bff/flutter/web/favicon.png
new file mode 100644
index 000000000..8aaa46ac1
Binary files /dev/null and b/samples/tutorials/bff/flutter/web/favicon.png differ
diff --git a/samples/tutorials/bff/flutter/web/icons/Icon-192.png b/samples/tutorials/bff/flutter/web/icons/Icon-192.png
new file mode 100644
index 000000000..b749bfef0
Binary files /dev/null and b/samples/tutorials/bff/flutter/web/icons/Icon-192.png differ
diff --git a/samples/tutorials/bff/flutter/web/icons/Icon-512.png b/samples/tutorials/bff/flutter/web/icons/Icon-512.png
new file mode 100644
index 000000000..88cfd48df
Binary files /dev/null and b/samples/tutorials/bff/flutter/web/icons/Icon-512.png differ
diff --git a/samples/tutorials/bff/flutter/web/icons/Icon-maskable-192.png b/samples/tutorials/bff/flutter/web/icons/Icon-maskable-192.png
new file mode 100644
index 000000000..eb9b4d76e
Binary files /dev/null and b/samples/tutorials/bff/flutter/web/icons/Icon-maskable-192.png differ
diff --git a/samples/tutorials/bff/flutter/web/icons/Icon-maskable-512.png b/samples/tutorials/bff/flutter/web/icons/Icon-maskable-512.png
new file mode 100644
index 000000000..d69c56691
Binary files /dev/null and b/samples/tutorials/bff/flutter/web/icons/Icon-maskable-512.png differ
diff --git a/samples/tutorials/bff/flutter/web/index.html b/samples/tutorials/bff/flutter/web/index.html
new file mode 100644
index 000000000..9b6bc3d80
--- /dev/null
+++ b/samples/tutorials/bff/flutter/web/index.html
@@ -0,0 +1,59 @@
+
+
+
+
+ bff_ui
+ :_DEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# Support files are copied into place next to the executable, so that it can
+# run in place. This is done instead of making a separate bundle (as on Linux)
+# so that building and running from within Visual Studio will work.
+set(BUILD_BUNDLE_DIR "$")
+# Make the "install" step default, as it's required to run.
+set(CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD 1)
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+ set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+ COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+ COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+ COMPONENT Runtime)
+
+if(PLUGIN_BUNDLED_LIBRARIES)
+ install(FILES "${PLUGIN_BUNDLED_LIBRARIES}"
+ DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+ COMPONENT Runtime)
+endif()
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+ file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+ " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+ DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+ CONFIGURATIONS Profile;Release
+ COMPONENT Runtime)
diff --git a/samples/tutorials/bff/flutter/windows/flutter/CMakeLists.txt b/samples/tutorials/bff/flutter/windows/flutter/CMakeLists.txt
new file mode 100644
index 000000000..903f4899d
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/flutter/CMakeLists.txt
@@ -0,0 +1,109 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.14)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+set(WRAPPER_ROOT "${EPHEMERAL_DIR}/cpp_client_wrapper")
+
+# Set fallback configurations for older versions of the flutter tool.
+if (NOT DEFINED FLUTTER_TARGET_PLATFORM)
+ set(FLUTTER_TARGET_PLATFORM "windows-x64")
+endif()
+
+# === Flutter Library ===
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/flutter_windows.dll")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/windows/app.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+ "flutter_export.h"
+ "flutter_windows.h"
+ "flutter_messenger.h"
+ "flutter_plugin_registrar.h"
+ "flutter_texture_registrar.h"
+)
+list(TRANSFORM FLUTTER_LIBRARY_HEADERS PREPEND "${EPHEMERAL_DIR}/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+ "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}.lib")
+add_dependencies(flutter flutter_assemble)
+
+# === Wrapper ===
+list(APPEND CPP_WRAPPER_SOURCES_CORE
+ "core_implementations.cc"
+ "standard_codec.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_CORE PREPEND "${WRAPPER_ROOT}/")
+list(APPEND CPP_WRAPPER_SOURCES_PLUGIN
+ "plugin_registrar.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_PLUGIN PREPEND "${WRAPPER_ROOT}/")
+list(APPEND CPP_WRAPPER_SOURCES_APP
+ "flutter_engine.cc"
+ "flutter_view_controller.cc"
+)
+list(TRANSFORM CPP_WRAPPER_SOURCES_APP PREPEND "${WRAPPER_ROOT}/")
+
+# Wrapper sources needed for a plugin.
+add_library(flutter_wrapper_plugin STATIC
+ ${CPP_WRAPPER_SOURCES_CORE}
+ ${CPP_WRAPPER_SOURCES_PLUGIN}
+)
+apply_standard_settings(flutter_wrapper_plugin)
+set_target_properties(flutter_wrapper_plugin PROPERTIES
+ POSITION_INDEPENDENT_CODE ON)
+set_target_properties(flutter_wrapper_plugin PROPERTIES
+ CXX_VISIBILITY_PRESET hidden)
+target_link_libraries(flutter_wrapper_plugin PUBLIC flutter)
+target_include_directories(flutter_wrapper_plugin PUBLIC
+ "${WRAPPER_ROOT}/include"
+)
+add_dependencies(flutter_wrapper_plugin flutter_assemble)
+
+# Wrapper sources needed for the runner.
+add_library(flutter_wrapper_app STATIC
+ ${CPP_WRAPPER_SOURCES_CORE}
+ ${CPP_WRAPPER_SOURCES_APP}
+)
+apply_standard_settings(flutter_wrapper_app)
+target_link_libraries(flutter_wrapper_app PUBLIC flutter)
+target_include_directories(flutter_wrapper_app PUBLIC
+ "${WRAPPER_ROOT}/include"
+)
+add_dependencies(flutter_wrapper_app flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+set(PHONY_OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/_phony_")
+set_source_files_properties("${PHONY_OUTPUT}" PROPERTIES SYMBOLIC TRUE)
+add_custom_command(
+ OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+ ${CPP_WRAPPER_SOURCES_CORE} ${CPP_WRAPPER_SOURCES_PLUGIN}
+ ${CPP_WRAPPER_SOURCES_APP}
+ ${PHONY_OUTPUT}
+ COMMAND ${CMAKE_COMMAND} -E env
+ ${FLUTTER_TOOL_ENVIRONMENT}
+ "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.bat"
+ ${FLUTTER_TARGET_PLATFORM} $
+ VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+ "${FLUTTER_LIBRARY}"
+ ${FLUTTER_LIBRARY_HEADERS}
+ ${CPP_WRAPPER_SOURCES_CORE}
+ ${CPP_WRAPPER_SOURCES_PLUGIN}
+ ${CPP_WRAPPER_SOURCES_APP}
+)
diff --git a/samples/tutorials/bff/flutter/windows/flutter/generated_plugin_registrant.cc b/samples/tutorials/bff/flutter/windows/flutter/generated_plugin_registrant.cc
new file mode 100644
index 000000000..4f7884874
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,14 @@
+//
+// Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+#include
+
+void RegisterPlugins(flutter::PluginRegistry* registry) {
+ UrlLauncherWindowsRegisterWithRegistrar(
+ registry->GetRegistrarForPlugin("UrlLauncherWindows"));
+}
diff --git a/samples/tutorials/bff/flutter/windows/flutter/generated_plugin_registrant.h b/samples/tutorials/bff/flutter/windows/flutter/generated_plugin_registrant.h
new file mode 100644
index 000000000..dc139d85a
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+// Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include
+
+// Registers Flutter plugins.
+void RegisterPlugins(flutter::PluginRegistry* registry);
+
+#endif // GENERATED_PLUGIN_REGISTRANT_
diff --git a/samples/tutorials/bff/flutter/windows/flutter/generated_plugins.cmake b/samples/tutorials/bff/flutter/windows/flutter/generated_plugins.cmake
new file mode 100644
index 000000000..88b22e5c7
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/flutter/generated_plugins.cmake
@@ -0,0 +1,24 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+ url_launcher_windows
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+ add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/windows plugins/${plugin})
+ target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+ list(APPEND PLUGIN_BUNDLED_LIBRARIES $)
+ list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+ add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/windows plugins/${ffi_plugin})
+ list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/samples/tutorials/bff/flutter/windows/runner/CMakeLists.txt b/samples/tutorials/bff/flutter/windows/runner/CMakeLists.txt
new file mode 100644
index 000000000..394917c05
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/CMakeLists.txt
@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.14)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME} WIN32
+ "flutter_window.cpp"
+ "main.cpp"
+ "utils.cpp"
+ "win32_window.cpp"
+ "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+ "Runner.rc"
+ "runner.exe.manifest"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the build version.
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION=\"${FLUTTER_VERSION}\"")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_MAJOR=${FLUTTER_VERSION_MAJOR}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_MINOR=${FLUTTER_VERSION_MINOR}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_PATCH=${FLUTTER_VERSION_PATCH}")
+target_compile_definitions(${BINARY_NAME} PRIVATE "FLUTTER_VERSION_BUILD=${FLUTTER_VERSION_BUILD}")
+
+# Disable Windows macros that collide with C++ standard library functions.
+target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX")
+
+# Add dependency libraries and include directories. Add any application-specific
+# dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app)
+target_link_libraries(${BINARY_NAME} PRIVATE "dwmapi.lib")
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
diff --git a/samples/tutorials/bff/flutter/windows/runner/Runner.rc b/samples/tutorials/bff/flutter/windows/runner/Runner.rc
new file mode 100644
index 000000000..45b1c112e
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/Runner.rc
@@ -0,0 +1,121 @@
+// Microsoft Visual C++ generated resource script.
+//
+#pragma code_page(65001)
+#include "resource.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 2 resource.
+//
+#include "winres.h"
+
+/////////////////////////////////////////////////////////////////////////////
+#undef APSTUDIO_READONLY_SYMBOLS
+
+/////////////////////////////////////////////////////////////////////////////
+// English (United States) resources
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
+
+#ifdef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// TEXTINCLUDE
+//
+
+1 TEXTINCLUDE
+BEGIN
+ "resource.h\0"
+END
+
+2 TEXTINCLUDE
+BEGIN
+ "#include ""winres.h""\r\n"
+ "\0"
+END
+
+3 TEXTINCLUDE
+BEGIN
+ "\r\n"
+ "\0"
+END
+
+#endif // APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Icon
+//
+
+// Icon with lowest ID value placed first to ensure application icon
+// remains consistent on all systems.
+IDI_APP_ICON ICON "resources\\app_icon.ico"
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+#if defined(FLUTTER_VERSION_MAJOR) && defined(FLUTTER_VERSION_MINOR) && defined(FLUTTER_VERSION_PATCH) && defined(FLUTTER_VERSION_BUILD)
+#define VERSION_AS_NUMBER FLUTTER_VERSION_MAJOR,FLUTTER_VERSION_MINOR,FLUTTER_VERSION_PATCH,FLUTTER_VERSION_BUILD
+#else
+#define VERSION_AS_NUMBER 1,0,0,0
+#endif
+
+#if defined(FLUTTER_VERSION)
+#define VERSION_AS_STRING FLUTTER_VERSION
+#else
+#define VERSION_AS_STRING "1.0.0"
+#endif
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION VERSION_AS_NUMBER
+ PRODUCTVERSION VERSION_AS_NUMBER
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS__WINDOWS32
+ FILETYPE VFT_APP
+ FILESUBTYPE 0x0L
+BEGIN
+ BLOCK "StringFileInfo"
+ BEGIN
+ BLOCK "040904e4"
+ BEGIN
+ VALUE "CompanyName", "com.example" "\0"
+ VALUE "FileDescription", "bff_ui" "\0"
+ VALUE "FileVersion", VERSION_AS_STRING "\0"
+ VALUE "InternalName", "bff_ui" "\0"
+ VALUE "LegalCopyright", "Copyright (C) 2023 com.example. All rights reserved." "\0"
+ VALUE "OriginalFilename", "bff_ui.exe" "\0"
+ VALUE "ProductName", "bff_ui" "\0"
+ VALUE "ProductVersion", VERSION_AS_STRING "\0"
+ END
+ END
+ BLOCK "VarFileInfo"
+ BEGIN
+ VALUE "Translation", 0x409, 1252
+ END
+END
+
+#endif // English (United States) resources
+/////////////////////////////////////////////////////////////////////////////
+
+
+
+#ifndef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 3 resource.
+//
+
+
+/////////////////////////////////////////////////////////////////////////////
+#endif // not APSTUDIO_INVOKED
diff --git a/samples/tutorials/bff/flutter/windows/runner/flutter_window.cpp b/samples/tutorials/bff/flutter/windows/runner/flutter_window.cpp
new file mode 100644
index 000000000..955ee3038
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/flutter_window.cpp
@@ -0,0 +1,71 @@
+#include "flutter_window.h"
+
+#include
+
+#include "flutter/generated_plugin_registrant.h"
+
+FlutterWindow::FlutterWindow(const flutter::DartProject& project)
+ : project_(project) {}
+
+FlutterWindow::~FlutterWindow() {}
+
+bool FlutterWindow::OnCreate() {
+ if (!Win32Window::OnCreate()) {
+ return false;
+ }
+
+ RECT frame = GetClientArea();
+
+ // The size here must match the window dimensions to avoid unnecessary surface
+ // creation / destruction in the startup path.
+ flutter_controller_ = std::make_unique(
+ frame.right - frame.left, frame.bottom - frame.top, project_);
+ // Ensure that basic setup of the controller was successful.
+ if (!flutter_controller_->engine() || !flutter_controller_->view()) {
+ return false;
+ }
+ RegisterPlugins(flutter_controller_->engine());
+ SetChildContent(flutter_controller_->view()->GetNativeWindow());
+
+ flutter_controller_->engine()->SetNextFrameCallback([&]() {
+ this->Show();
+ });
+
+ // Flutter can complete the first frame before the "show window" callback is
+ // registered. The following call ensures a frame is pending to ensure the
+ // window is shown. It is a no-op if the first frame hasn't completed yet.
+ flutter_controller_->ForceRedraw();
+
+ return true;
+}
+
+void FlutterWindow::OnDestroy() {
+ if (flutter_controller_) {
+ flutter_controller_ = nullptr;
+ }
+
+ Win32Window::OnDestroy();
+}
+
+LRESULT
+FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
+ WPARAM const wparam,
+ LPARAM const lparam) noexcept {
+ // Give Flutter, including plugins, an opportunity to handle window messages.
+ if (flutter_controller_) {
+ std::optional result =
+ flutter_controller_->HandleTopLevelWindowProc(hwnd, message, wparam,
+ lparam);
+ if (result) {
+ return *result;
+ }
+ }
+
+ switch (message) {
+ case WM_FONTCHANGE:
+ flutter_controller_->engine()->ReloadSystemFonts();
+ break;
+ }
+
+ return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
+}
diff --git a/samples/tutorials/bff/flutter/windows/runner/flutter_window.h b/samples/tutorials/bff/flutter/windows/runner/flutter_window.h
new file mode 100644
index 000000000..6da0652f0
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/flutter_window.h
@@ -0,0 +1,33 @@
+#ifndef RUNNER_FLUTTER_WINDOW_H_
+#define RUNNER_FLUTTER_WINDOW_H_
+
+#include
+#include
+
+#include
+
+#include "win32_window.h"
+
+// A window that does nothing but host a Flutter view.
+class FlutterWindow : public Win32Window {
+ public:
+ // Creates a new FlutterWindow hosting a Flutter view running |project|.
+ explicit FlutterWindow(const flutter::DartProject& project);
+ virtual ~FlutterWindow();
+
+ protected:
+ // Win32Window:
+ bool OnCreate() override;
+ void OnDestroy() override;
+ LRESULT MessageHandler(HWND window, UINT const message, WPARAM const wparam,
+ LPARAM const lparam) noexcept override;
+
+ private:
+ // The project to run.
+ flutter::DartProject project_;
+
+ // The Flutter instance hosted by this window.
+ std::unique_ptr flutter_controller_;
+};
+
+#endif // RUNNER_FLUTTER_WINDOW_H_
diff --git a/samples/tutorials/bff/flutter/windows/runner/main.cpp b/samples/tutorials/bff/flutter/windows/runner/main.cpp
new file mode 100644
index 000000000..231d23dbd
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/main.cpp
@@ -0,0 +1,43 @@
+#include
+#include
+#include
+
+#include "flutter_window.h"
+#include "utils.h"
+
+int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
+ _In_ wchar_t *command_line, _In_ int show_command) {
+ // Attach to console when present (e.g., 'flutter run') or create a
+ // new console when running with a debugger.
+ if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent()) {
+ CreateAndAttachConsole();
+ }
+
+ // Initialize COM, so that it is available for use in the library and/or
+ // plugins.
+ ::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+
+ flutter::DartProject project(L"data");
+
+ std::vector command_line_arguments =
+ GetCommandLineArguments();
+
+ project.set_dart_entrypoint_arguments(std::move(command_line_arguments));
+
+ FlutterWindow window(project);
+ Win32Window::Point origin(10, 10);
+ Win32Window::Size size(1280, 720);
+ if (!window.Create(L"bff_ui", origin, size)) {
+ return EXIT_FAILURE;
+ }
+ window.SetQuitOnClose(true);
+
+ ::MSG msg;
+ while (::GetMessage(&msg, nullptr, 0, 0)) {
+ ::TranslateMessage(&msg);
+ ::DispatchMessage(&msg);
+ }
+
+ ::CoUninitialize();
+ return EXIT_SUCCESS;
+}
diff --git a/samples/tutorials/bff/flutter/windows/runner/resource.h b/samples/tutorials/bff/flutter/windows/runner/resource.h
new file mode 100644
index 000000000..66a65d1e4
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/resource.h
@@ -0,0 +1,16 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by Runner.rc
+//
+#define IDI_APP_ICON 101
+
+// Next default values for new objects
+//
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE 102
+#define _APS_NEXT_COMMAND_VALUE 40001
+#define _APS_NEXT_CONTROL_VALUE 1001
+#define _APS_NEXT_SYMED_VALUE 101
+#endif
+#endif
diff --git a/samples/tutorials/bff/flutter/windows/runner/resources/app_icon.ico b/samples/tutorials/bff/flutter/windows/runner/resources/app_icon.ico
new file mode 100644
index 000000000..c04e20caf
Binary files /dev/null and b/samples/tutorials/bff/flutter/windows/runner/resources/app_icon.ico differ
diff --git a/samples/tutorials/bff/flutter/windows/runner/runner.exe.manifest b/samples/tutorials/bff/flutter/windows/runner/runner.exe.manifest
new file mode 100644
index 000000000..a42ea7687
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/runner.exe.manifest
@@ -0,0 +1,20 @@
+
+
+
+
+ PerMonitorV2
+
+
+
+
+
+
+
+
diff --git a/samples/tutorials/bff/flutter/windows/runner/utils.cpp b/samples/tutorials/bff/flutter/windows/runner/utils.cpp
new file mode 100644
index 000000000..b2b08734d
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/utils.cpp
@@ -0,0 +1,65 @@
+#include "utils.h"
+
+#include
+#include
+#include
+#include
+
+#include
+
+void CreateAndAttachConsole() {
+ if (::AllocConsole()) {
+ FILE *unused;
+ if (freopen_s(&unused, "CONOUT$", "w", stdout)) {
+ _dup2(_fileno(stdout), 1);
+ }
+ if (freopen_s(&unused, "CONOUT$", "w", stderr)) {
+ _dup2(_fileno(stdout), 2);
+ }
+ std::ios::sync_with_stdio();
+ FlutterDesktopResyncOutputStreams();
+ }
+}
+
+std::vector GetCommandLineArguments() {
+ // Convert the UTF-16 command line arguments to UTF-8 for the Engine to use.
+ int argc;
+ wchar_t** argv = ::CommandLineToArgvW(::GetCommandLineW(), &argc);
+ if (argv == nullptr) {
+ return std::vector();
+ }
+
+ std::vector command_line_arguments;
+
+ // Skip the first argument as it's the binary name.
+ for (int i = 1; i < argc; i++) {
+ command_line_arguments.push_back(Utf8FromUtf16(argv[i]));
+ }
+
+ ::LocalFree(argv);
+
+ return command_line_arguments;
+}
+
+std::string Utf8FromUtf16(const wchar_t* utf16_string) {
+ if (utf16_string == nullptr) {
+ return std::string();
+ }
+ int target_length = ::WideCharToMultiByte(
+ CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
+ -1, nullptr, 0, nullptr, nullptr)
+ -1; // remove the trailing null character
+ int input_length = (int)wcslen(utf16_string);
+ std::string utf8_string;
+ if (target_length <= 0 || target_length > utf8_string.max_size()) {
+ return utf8_string;
+ }
+ utf8_string.resize(target_length);
+ int converted_length = ::WideCharToMultiByte(
+ CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
+ input_length, utf8_string.data(), target_length, nullptr, nullptr);
+ if (converted_length == 0) {
+ return std::string();
+ }
+ return utf8_string;
+}
diff --git a/samples/tutorials/bff/flutter/windows/runner/utils.h b/samples/tutorials/bff/flutter/windows/runner/utils.h
new file mode 100644
index 000000000..3879d5475
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/utils.h
@@ -0,0 +1,19 @@
+#ifndef RUNNER_UTILS_H_
+#define RUNNER_UTILS_H_
+
+#include
+#include
+
+// Creates a console for the process, and redirects stdout and stderr to
+// it for both the runner and the Flutter library.
+void CreateAndAttachConsole();
+
+// Takes a null-terminated wchar_t* encoded in UTF-16 and returns a std::string
+// encoded in UTF-8. Returns an empty std::string on failure.
+std::string Utf8FromUtf16(const wchar_t* utf16_string);
+
+// Gets the command line arguments passed in as a std::vector,
+// encoded in UTF-8. Returns an empty std::vector on failure.
+std::vector GetCommandLineArguments();
+
+#endif // RUNNER_UTILS_H_
diff --git a/samples/tutorials/bff/flutter/windows/runner/win32_window.cpp b/samples/tutorials/bff/flutter/windows/runner/win32_window.cpp
new file mode 100644
index 000000000..60608d0fe
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/win32_window.cpp
@@ -0,0 +1,288 @@
+#include "win32_window.h"
+
+#include
+#include
+
+#include "resource.h"
+
+namespace {
+
+/// Window attribute that enables dark mode window decorations.
+///
+/// Redefined in case the developer's machine has a Windows SDK older than
+/// version 10.0.22000.0.
+/// See: https://docs.microsoft.com/windows/win32/api/dwmapi/ne-dwmapi-dwmwindowattribute
+#ifndef DWMWA_USE_IMMERSIVE_DARK_MODE
+#define DWMWA_USE_IMMERSIVE_DARK_MODE 20
+#endif
+
+constexpr const wchar_t kWindowClassName[] = L"FLUTTER_RUNNER_WIN32_WINDOW";
+
+/// Registry key for app theme preference.
+///
+/// A value of 0 indicates apps should use dark mode. A non-zero or missing
+/// value indicates apps should use light mode.
+constexpr const wchar_t kGetPreferredBrightnessRegKey[] =
+ L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize";
+constexpr const wchar_t kGetPreferredBrightnessRegValue[] = L"AppsUseLightTheme";
+
+// The number of Win32Window objects that currently exist.
+static int g_active_window_count = 0;
+
+using EnableNonClientDpiScaling = BOOL __stdcall(HWND hwnd);
+
+// Scale helper to convert logical scaler values to physical using passed in
+// scale factor
+int Scale(int source, double scale_factor) {
+ return static_cast(source * scale_factor);
+}
+
+// Dynamically loads the |EnableNonClientDpiScaling| from the User32 module.
+// This API is only needed for PerMonitor V1 awareness mode.
+void EnableFullDpiSupportIfAvailable(HWND hwnd) {
+ HMODULE user32_module = LoadLibraryA("User32.dll");
+ if (!user32_module) {
+ return;
+ }
+ auto enable_non_client_dpi_scaling =
+ reinterpret_cast(
+ GetProcAddress(user32_module, "EnableNonClientDpiScaling"));
+ if (enable_non_client_dpi_scaling != nullptr) {
+ enable_non_client_dpi_scaling(hwnd);
+ }
+ FreeLibrary(user32_module);
+}
+
+} // namespace
+
+// Manages the Win32Window's window class registration.
+class WindowClassRegistrar {
+ public:
+ ~WindowClassRegistrar() = default;
+
+ // Returns the singleton registrar instance.
+ static WindowClassRegistrar* GetInstance() {
+ if (!instance_) {
+ instance_ = new WindowClassRegistrar();
+ }
+ return instance_;
+ }
+
+ // Returns the name of the window class, registering the class if it hasn't
+ // previously been registered.
+ const wchar_t* GetWindowClass();
+
+ // Unregisters the window class. Should only be called if there are no
+ // instances of the window.
+ void UnregisterWindowClass();
+
+ private:
+ WindowClassRegistrar() = default;
+
+ static WindowClassRegistrar* instance_;
+
+ bool class_registered_ = false;
+};
+
+WindowClassRegistrar* WindowClassRegistrar::instance_ = nullptr;
+
+const wchar_t* WindowClassRegistrar::GetWindowClass() {
+ if (!class_registered_) {
+ WNDCLASS window_class{};
+ window_class.hCursor = LoadCursor(nullptr, IDC_ARROW);
+ window_class.lpszClassName = kWindowClassName;
+ window_class.style = CS_HREDRAW | CS_VREDRAW;
+ window_class.cbClsExtra = 0;
+ window_class.cbWndExtra = 0;
+ window_class.hInstance = GetModuleHandle(nullptr);
+ window_class.hIcon =
+ LoadIcon(window_class.hInstance, MAKEINTRESOURCE(IDI_APP_ICON));
+ window_class.hbrBackground = 0;
+ window_class.lpszMenuName = nullptr;
+ window_class.lpfnWndProc = Win32Window::WndProc;
+ RegisterClass(&window_class);
+ class_registered_ = true;
+ }
+ return kWindowClassName;
+}
+
+void WindowClassRegistrar::UnregisterWindowClass() {
+ UnregisterClass(kWindowClassName, nullptr);
+ class_registered_ = false;
+}
+
+Win32Window::Win32Window() {
+ ++g_active_window_count;
+}
+
+Win32Window::~Win32Window() {
+ --g_active_window_count;
+ Destroy();
+}
+
+bool Win32Window::Create(const std::wstring& title,
+ const Point& origin,
+ const Size& size) {
+ Destroy();
+
+ const wchar_t* window_class =
+ WindowClassRegistrar::GetInstance()->GetWindowClass();
+
+ const POINT target_point = {static_cast(origin.x),
+ static_cast(origin.y)};
+ HMONITOR monitor = MonitorFromPoint(target_point, MONITOR_DEFAULTTONEAREST);
+ UINT dpi = FlutterDesktopGetDpiForMonitor(monitor);
+ double scale_factor = dpi / 96.0;
+
+ HWND window = CreateWindow(
+ window_class, title.c_str(), WS_OVERLAPPEDWINDOW,
+ Scale(origin.x, scale_factor), Scale(origin.y, scale_factor),
+ Scale(size.width, scale_factor), Scale(size.height, scale_factor),
+ nullptr, nullptr, GetModuleHandle(nullptr), this);
+
+ if (!window) {
+ return false;
+ }
+
+ UpdateTheme(window);
+
+ return OnCreate();
+}
+
+bool Win32Window::Show() {
+ return ShowWindow(window_handle_, SW_SHOWNORMAL);
+}
+
+// static
+LRESULT CALLBACK Win32Window::WndProc(HWND const window,
+ UINT const message,
+ WPARAM const wparam,
+ LPARAM const lparam) noexcept {
+ if (message == WM_NCCREATE) {
+ auto window_struct = reinterpret_cast(lparam);
+ SetWindowLongPtr(window, GWLP_USERDATA,
+ reinterpret_cast(window_struct->lpCreateParams));
+
+ auto that = static_cast(window_struct->lpCreateParams);
+ EnableFullDpiSupportIfAvailable(window);
+ that->window_handle_ = window;
+ } else if (Win32Window* that = GetThisFromHandle(window)) {
+ return that->MessageHandler(window, message, wparam, lparam);
+ }
+
+ return DefWindowProc(window, message, wparam, lparam);
+}
+
+LRESULT
+Win32Window::MessageHandler(HWND hwnd,
+ UINT const message,
+ WPARAM const wparam,
+ LPARAM const lparam) noexcept {
+ switch (message) {
+ case WM_DESTROY:
+ window_handle_ = nullptr;
+ Destroy();
+ if (quit_on_close_) {
+ PostQuitMessage(0);
+ }
+ return 0;
+
+ case WM_DPICHANGED: {
+ auto newRectSize = reinterpret_cast(lparam);
+ LONG newWidth = newRectSize->right - newRectSize->left;
+ LONG newHeight = newRectSize->bottom - newRectSize->top;
+
+ SetWindowPos(hwnd, nullptr, newRectSize->left, newRectSize->top, newWidth,
+ newHeight, SWP_NOZORDER | SWP_NOACTIVATE);
+
+ return 0;
+ }
+ case WM_SIZE: {
+ RECT rect = GetClientArea();
+ if (child_content_ != nullptr) {
+ // Size and position the child window.
+ MoveWindow(child_content_, rect.left, rect.top, rect.right - rect.left,
+ rect.bottom - rect.top, TRUE);
+ }
+ return 0;
+ }
+
+ case WM_ACTIVATE:
+ if (child_content_ != nullptr) {
+ SetFocus(child_content_);
+ }
+ return 0;
+
+ case WM_DWMCOLORIZATIONCOLORCHANGED:
+ UpdateTheme(hwnd);
+ return 0;
+ }
+
+ return DefWindowProc(window_handle_, message, wparam, lparam);
+}
+
+void Win32Window::Destroy() {
+ OnDestroy();
+
+ if (window_handle_) {
+ DestroyWindow(window_handle_);
+ window_handle_ = nullptr;
+ }
+ if (g_active_window_count == 0) {
+ WindowClassRegistrar::GetInstance()->UnregisterWindowClass();
+ }
+}
+
+Win32Window* Win32Window::GetThisFromHandle(HWND const window) noexcept {
+ return reinterpret_cast(
+ GetWindowLongPtr(window, GWLP_USERDATA));
+}
+
+void Win32Window::SetChildContent(HWND content) {
+ child_content_ = content;
+ SetParent(content, window_handle_);
+ RECT frame = GetClientArea();
+
+ MoveWindow(content, frame.left, frame.top, frame.right - frame.left,
+ frame.bottom - frame.top, true);
+
+ SetFocus(child_content_);
+}
+
+RECT Win32Window::GetClientArea() {
+ RECT frame;
+ GetClientRect(window_handle_, &frame);
+ return frame;
+}
+
+HWND Win32Window::GetHandle() {
+ return window_handle_;
+}
+
+void Win32Window::SetQuitOnClose(bool quit_on_close) {
+ quit_on_close_ = quit_on_close;
+}
+
+bool Win32Window::OnCreate() {
+ // No-op; provided for subclasses.
+ return true;
+}
+
+void Win32Window::OnDestroy() {
+ // No-op; provided for subclasses.
+}
+
+void Win32Window::UpdateTheme(HWND const window) {
+ DWORD light_mode;
+ DWORD light_mode_size = sizeof(light_mode);
+ LSTATUS result = RegGetValue(HKEY_CURRENT_USER, kGetPreferredBrightnessRegKey,
+ kGetPreferredBrightnessRegValue,
+ RRF_RT_REG_DWORD, nullptr, &light_mode,
+ &light_mode_size);
+
+ if (result == ERROR_SUCCESS) {
+ BOOL enable_dark_mode = light_mode == 0;
+ DwmSetWindowAttribute(window, DWMWA_USE_IMMERSIVE_DARK_MODE,
+ &enable_dark_mode, sizeof(enable_dark_mode));
+ }
+}
diff --git a/samples/tutorials/bff/flutter/windows/runner/win32_window.h b/samples/tutorials/bff/flutter/windows/runner/win32_window.h
new file mode 100644
index 000000000..e901dde68
--- /dev/null
+++ b/samples/tutorials/bff/flutter/windows/runner/win32_window.h
@@ -0,0 +1,102 @@
+#ifndef RUNNER_WIN32_WINDOW_H_
+#define RUNNER_WIN32_WINDOW_H_
+
+#include
+
+#include
+#include
+#include
+
+// A class abstraction for a high DPI-aware Win32 Window. Intended to be
+// inherited from by classes that wish to specialize with custom
+// rendering and input handling
+class Win32Window {
+ public:
+ struct Point {
+ unsigned int x;
+ unsigned int y;
+ Point(unsigned int x, unsigned int y) : x(x), y(y) {}
+ };
+
+ struct Size {
+ unsigned int width;
+ unsigned int height;
+ Size(unsigned int width, unsigned int height)
+ : width(width), height(height) {}
+ };
+
+ Win32Window();
+ virtual ~Win32Window();
+
+ // Creates a win32 window with |title| that is positioned and sized using
+ // |origin| and |size|. New windows are created on the default monitor. Window
+ // sizes are specified to the OS in physical pixels, hence to ensure a
+ // consistent size this function will scale the inputted width and height as
+ // as appropriate for the default monitor. The window is invisible until
+ // |Show| is called. Returns true if the window was created successfully.
+ bool Create(const std::wstring& title, const Point& origin, const Size& size);
+
+ // Show the current window. Returns true if the window was successfully shown.
+ bool Show();
+
+ // Release OS resources associated with window.
+ void Destroy();
+
+ // Inserts |content| into the window tree.
+ void SetChildContent(HWND content);
+
+ // Returns the backing Window handle to enable clients to set icon and other
+ // window properties. Returns nullptr if the window has been destroyed.
+ HWND GetHandle();
+
+ // If true, closing this window will quit the application.
+ void SetQuitOnClose(bool quit_on_close);
+
+ // Return a RECT representing the bounds of the current client area.
+ RECT GetClientArea();
+
+ protected:
+ // Processes and route salient window messages for mouse handling,
+ // size change and DPI. Delegates handling of these to member overloads that
+ // inheriting classes can handle.
+ virtual LRESULT MessageHandler(HWND window,
+ UINT const message,
+ WPARAM const wparam,
+ LPARAM const lparam) noexcept;
+
+ // Called when CreateAndShow is called, allowing subclass window-related
+ // setup. Subclasses should return false if setup fails.
+ virtual bool OnCreate();
+
+ // Called when Destroy is called.
+ virtual void OnDestroy();
+
+ private:
+ friend class WindowClassRegistrar;
+
+ // OS callback called by message pump. Handles the WM_NCCREATE message which
+ // is passed when the non-client area is being created and enables automatic
+ // non-client DPI scaling so that the non-client area automatically
+ // responds to changes in DPI. All other messages are handled by
+ // MessageHandler.
+ static LRESULT CALLBACK WndProc(HWND const window,
+ UINT const message,
+ WPARAM const wparam,
+ LPARAM const lparam) noexcept;
+
+ // Retrieves a class instance pointer for |window|
+ static Win32Window* GetThisFromHandle(HWND const window) noexcept;
+
+ // Update the window frame's theme to match the system theme.
+ static void UpdateTheme(HWND const window);
+
+ bool quit_on_close_ = false;
+
+ // window handle for top level window.
+ HWND window_handle_ = nullptr;
+
+ // window handle for hosted content.
+ HWND child_content_ = nullptr;
+};
+
+#endif // RUNNER_WIN32_WINDOW_H_