updated

lib/Screens/AB/Arduino Project/Project.ino

+#include "NewPing.h"
+#include <ESP8266WiFi.h>
+#include <FirebaseESP8266.h>
+#include <Servo.h>
+#include <math.h>
+
+// Set these to run example.
+#define FIREBASE_HOST "ifarm-4ec55-default-rtdb.firebaseio.com"
+#define FIREBASE_AUTH "0XoTKCHRo5iB63DShpRfq5Q545GQfDlTcBxQrEkP"
+#define WIFI_SSID "Dialog 4G CB3"
+#define WIFI_PASSWORD "BMy7M977"
+#define LED1 D1
+#define LED2 D2
+#define TRIGGER_PIN D7
+#define ECHO_PIN D8
+
+#define MAX_DISTANCE 400
+
+
+NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);
+
+
+// Declare the Firebase Data object in the global scope
+FirebaseData firebaseData;
+
+// Declare global variable to store value
+int val = 0;
+Servo servo;
+const int AirValue = 1024.0;   //you need to replace this value with Value_1
+const int WaterValue = 950.0;  //you need to replace this value with Value_2
+float foodMoistureValue = 0.0;
+float foodmoisturepercent = 0.0;
+float foodpercent = 0.0;
+
+
+//Change product number here
+String productnumber = "001";
+
+
+void setup() {
+  Serial.begin(9600);
+  pinMode(LED1, OUTPUT);
+  digitalWrite(LED1, HIGH);
+  pinMode(LED2, OUTPUT);
+digitalWrite(LED2, LOW);
+  // connect to wifi.
+  servo.attach(2); //D4
+  servo.write(90);
+
+  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+  Serial.print("connecting");
+  while (WiFi.status() != WL_CONNECTED) {
+    Serial.print(".");
+    delay(500);
+  }
+  Serial.println();
+  Serial.print("connected: ");
+  digitalWrite(LED1, LOW);
+  digitalWrite(LED2, HIGH);
+  Serial.println(WiFi.localIP());
+
+  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
+  Firebase.setInt(firebaseData, "/Food/"+productnumber+"/SERVO", 0);
+
+  Serial.println("Sensor Data\n");
+}
+
+
+int s = 0;
+void loop() {
+float  foodlimit;
+
+
+
+float dis = sonar.ping_cm();
+if(dis == 9 ){
+  foodlimit = 0;
+  }else if(dis <= 1){
+    foodlimit = 100;
+    }
+    else if(dis > 1 || dis < 9){
+      foodlimit = round(((8 - dis )/8)*100);
+      }
+Firebase.setFloat(firebaseData, "/Food/"+productnumber+"/dis",foodlimit);
+
+  foodMoistureValue = analogRead(A0);
+  foodmoisturepercent = map(foodMoistureValue, AirValue, WaterValue, 0, 100);
+
+  if(foodmoisturepercent >= 100.0){
+    foodpercent = 100.0;
+    }else if(foodmoisturepercent <= 0.0){
+      foodpercent = 0.0;
+      }else if (foodmoisturepercent >0.0 && foodmoisturepercent < 100.0){
+        foodpercent = foodmoisturepercent;
+        }
+  Serial.print(" Soil Moisture: ");  Serial.print(foodpercent);  Serial.print("%");
+
+  Firebase.setFloat(firebaseData, "/Food/"+productnumber+"/Moist/foodMoist", foodpercent);
+  if (Firebase.getInt(firebaseData, "/Food/"+productnumber+"/SERVO")) {
+    s = firebaseData.intData();
+    Serial.print(" Servo: "); Serial.println(s);
+  }
+  if (s == 0) {
+    servo.write(0);              // tell servo to go to position in variable 'pos'
+    delay(2000); return;
+
+  }
+  else {
+    servo.write(180);
+    delay(2000);
+    return;
+  }
+
+  delay(1000);
+}

lib/Screens/AB/Home.dart

-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:ifarm/Screens/AB/Food.dart';
 import 'package:shared_preferences/shared_preferences.dart';
-import 'package:switcher_button/switcher_button.dart';
 
 class Home extends StatefulWidget {
   Home({Key? key}) : super(key: key);
@@ -153,9 +151,7 @@ class _HomeState extends State<Home> {
                       //Water
                       Expanded(
                         child: GestureDetector(
-                          onTap: () {
-                            print('water');
-                          },
+                          onTap: () {},
                           child: Container(
                             height: 100,
                             padding: const EdgeInsets.all(15),

lib/Screens/AB/Login.dart

@@ -154,8 +154,8 @@ class _LoginState extends State<Login> {
                           Row(
                             mainAxisAlignment: MainAxisAlignment.center,
                             children: [
-                              FlatButton(
-                                  onPressed: () {
+                              GestureDetector(
+                                  onTap: () {
                                     Navigator.push(
                                         context,
                                         MaterialPageRoute(
@@ -180,8 +180,8 @@ class _LoginState extends State<Login> {
                                       ),
                                     ),
                                   )),
-                              FlatButton(
-                                  onPressed: () {
+                              GestureDetector(
+                                  onTap: () {
                                     print(emailController.text);
                                     print(passwordController.text);
                                     if (emailController.text.isEmpty &&

lib/Screens/AB/register.dart

@@ -99,8 +99,8 @@ class _registerState extends State<register> {
                 Row(
                   mainAxisAlignment: MainAxisAlignment.center,
                   children: [
-                    FlatButton(
-                        onPressed: () {
+                    GestureDetector(
+                        onTap: () {
                           Navigator.push(context,
                               MaterialPageRoute(builder: (context) => Login()));
                         },
@@ -121,8 +121,8 @@ class _registerState extends State<register> {
                             ),
                           ),
                         )),
-                    FlatButton(
-                        onPressed: () {
+                    GestureDetector(
+                        onTap: () {
                           print(emailController.text);
                           print(passwordController.text);
                           if (emailController.text.isEmpty &&

pubspec.lock

@@ -7,7 +7,7 @@ packages:
       name: _flutterfire_internals
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "1.0.8"
   animated_toggle_switch:
     dependency: "direct main"
     description:
@@ -35,7 +35,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.8.2"
+    version: "2.9.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -49,49 +49,42 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
-  charcode:
-    dependency: transitive
-    description:
-      name: charcode
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.3.1"
+    version: "1.2.1"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   cloud_firestore:
     dependency: "direct main"
     description:
       name: cloud_firestore
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.5.0"
+    version: "4.0.5"
   cloud_firestore_platform_interface:
     dependency: transitive
     description:
       name: cloud_firestore_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.7.6"
+    version: "5.8.5"
   cloud_firestore_web:
     dependency: transitive
     description:
       name: cloud_firestore_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.8.9"
+    version: "3.0.5"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0"
+    version: "1.16.0"
   connectivity_plus:
     dependency: "direct main"
     description:
@@ -161,7 +154,7 @@ packages:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.1"
   ffi:
     dependency: transitive
     description:
@@ -182,63 +175,63 @@ packages:
       name: firebase_auth
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.4.2"
+    version: "4.1.2"
   firebase_auth_platform_interface:
     dependency: transitive
     description:
       name: firebase_auth_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.3.2"
+    version: "6.11.2"
   firebase_auth_web:
     dependency: transitive
     description:
       name: firebase_auth_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.0"
+    version: "5.1.2"
   firebase_core:
     dependency: "direct main"
     description:
       name: firebase_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.24.0"
+    version: "2.2.0"
   firebase_core_platform_interface:
     dependency: transitive
     description:
       name: firebase_core_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.5.1"
+    version: "4.5.2"
   firebase_core_web:
     dependency: transitive
     description:
       name: firebase_core_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.3"
+    version: "2.0.1"
   firebase_database:
     dependency: "direct main"
     description:
       name: firebase_database
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "9.1.6"
+    version: "10.0.5"
   firebase_database_platform_interface:
     dependency: transitive
     description:
       name: firebase_database_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.2+6"
+    version: "0.2.2+13"
   firebase_database_web:
     dependency: transitive
     description:
       name: firebase_database_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.1+8"
+    version: "0.2.1+15"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -323,7 +316,7 @@ packages:
       name: js
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.6.3"
+    version: "0.6.4"
   lints:
     dependency: transitive
     description:
@@ -344,21 +337,21 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.11"
+    version: "0.12.12"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.3"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0"
   nested:
     dependency: transitive
     description:
@@ -379,7 +372,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0"
+    version: "1.8.2"
   path_provider_linux:
     dependency: transitive
     description:
@@ -503,7 +496,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.1"
+    version: "1.9.0"
   stack_trace:
     dependency: transitive
     description:
@@ -524,7 +517,7 @@ packages:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   switcher_button:
     dependency: "direct main"
     description:
@@ -538,14 +531,14 @@ packages:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.8"
+    version: "0.4.12"
   typed_data:
     dependency: transitive
     description:
@@ -559,7 +552,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
   win32:
     dependency: transitive
     description:
@@ -589,5 +582,5 @@ packages:
     source: hosted
     version: "3.1.1"
 sdks:
-  dart: ">=2.16.2 <3.0.0"
+  dart: ">=2.17.0-0 <3.0.0"
   flutter: ">=2.10.0"

pubspec.yaml

@@ -14,17 +14,17 @@ dependencies:
     sdk: flutter
 
   cupertino_icons: ^1.0.2
-  firebase_core: ^1.24.0
-  firebase_database: ^9.0.19
+  firebase_core: ^2.2.0
+  firebase_database: ^10.0.5
   animated_toggle_switch: ^0.5.2
   fluttertoast: ^8.0.9
   shared_preferences: ^2.0.9
   flutter_launcher_icons: ^0.9.2
   liquid_progress_indicator: ^0.4.0
-  firebase_auth: ^3.4.2
+  firebase_auth: ^4.1.2
   flutter_barcode_scanner: ^2.0.0
   switcher_button: ^0.0.4
-  cloud_firestore: ^3.4.8
+  cloud_firestore: ^4.0.5
   font_awesome_flutter: ^10.2.1
   provider: ^6.0.3
   connectivity_plus: ^2.3.0

test/widget_test.dart

-// This is a basic Flutter widget test.
-//
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility that Flutter provides. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:ifarm/main.dart';
-
-void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
-
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
-  });
-}

web/index.html

-<!DOCTYPE html>
-<html>
-<head>
-  <!--
-    If you are serving your web app in a path other than the root, change the
-    href value below to reflect the base path you are serving from.
-
-    The path provided below has to start and end with a slash "/" in order for
-    it to work correctly.
-
-    For more details:
-    * https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
-
-    This is a placeholder for base href that will be replaced by the value of
-    the `--base-href` argument provided to `flutter build`.
-  -->
-  <base href="$FLUTTER_BASE_HREF">
-
-  <meta charset="UTF-8">
-  <meta content="IE=Edge" http-equiv="X-UA-Compatible">
-  <meta name="description" content="A new Flutter project.">
-
-  <!-- iOS meta tags & icons -->
-  <meta name="apple-mobile-web-app-capable" content="yes">
-  <meta name="apple-mobile-web-app-status-bar-style" content="black">
-  <meta name="apple-mobile-web-app-title" content="ifarm">
-  <link rel="apple-touch-icon" href="icons/Icon-192.png">
-
-  <!-- Favicon -->
-  <link rel="icon" type="image/png" href="favicon.png"/>
-
-  <title>ifarm</title>
-  <link rel="manifest" href="manifest.json">
-</head>
-<body>
-  <!-- This script installs service_worker.js to provide PWA functionality to
-       application. For more information, see:
-       https://developers.google.com/web/fundamentals/primers/service-workers -->
-  <script>
-    var serviceWorkerVersion = null;
-    var scriptLoaded = false;
-    function loadMainDartJs() {
-      if (scriptLoaded) {
-        return;
-      }
-      scriptLoaded = true;
-      var scriptTag = document.createElement('script');
-      scriptTag.src = 'main.dart.js';
-      scriptTag.type = 'application/javascript';
-      document.body.append(scriptTag);
-    }
-
-    if ('serviceWorker' in navigator) {
-      // Service workers are supported. Use them.
-      window.addEventListener('load', function () {
-        // Wait for registration to finish before dropping the <script> tag.
-        // Otherwise, the browser will load the script multiple times,
-        // potentially different versions.
-        var serviceWorkerUrl = 'flutter_service_worker.js?v=' + serviceWorkerVersion;
-        navigator.serviceWorker.register(serviceWorkerUrl)
-          .then((reg) => {
-            function waitForActivation(serviceWorker) {
-              serviceWorker.addEventListener('statechange', () => {
-                if (serviceWorker.state == 'activated') {
-                  console.log('Installed new service worker.');
-                  loadMainDartJs();
-                }
-              });
-            }
-            if (!reg.active && (reg.installing || reg.waiting)) {
-              // No active web worker and we have installed or are installing
-              // one for the first time. Simply wait for it to activate.
-              waitForActivation(reg.installing || reg.waiting);
-            } else if (!reg.active.scriptURL.endsWith(serviceWorkerVersion)) {
-              // When the app updates the serviceWorkerVersion changes, so we
-              // need to ask the service worker to update.
-              console.log('New service worker available.');
-              reg.update();
-              waitForActivation(reg.installing);
-            } else {
-              // Existing service worker is still good.
-              console.log('Loading app from service worker.');
-              loadMainDartJs();
-            }
-          });
-
-        // If service worker doesn't succeed in a reasonable amount of time,
-        // fallback to plaint <script> tag.
-        setTimeout(() => {
-          if (!scriptLoaded) {
-            console.warn(
-              'Failed to load app from service worker. Falling back to plain <script> tag.',
-            );
-            loadMainDartJs();
-          }
-        }, 4000);
-      });
-    } else {
-      // Service workers not supported. Just drop the <script> tag.
-      loadMainDartJs();
-    }
-  </script>
-</body>
-</html>

web/manifest.json

-{
-    "name": "ifarm",
-    "short_name": "ifarm",
-    "start_url": ".",
-    "display": "standalone",
-    "background_color": "#0175C2",
-    "theme_color": "#0175C2",
-    "description": "A new Flutter project.",
-    "orientation": "portrait-primary",
-    "prefer_related_applications": false,
-    "icons": [
-        {
-            "src": "icons/Icon-192.png",
-            "sizes": "192x192",
-            "type": "image/png"
-        },
-        {
-            "src": "icons/Icon-512.png",
-            "sizes": "512x512",
-            "type": "image/png"
-        },
-        {
-            "src": "icons/Icon-maskable-192.png",
-            "sizes": "192x192",
-            "type": "image/png",
-            "purpose": "maskable"
-        },
-        {
-            "src": "icons/Icon-maskable-512.png",
-            "sizes": "512x512",
-            "type": "image/png",
-            "purpose": "maskable"
-        }
-    ]
-}

windows/.gitignore

-flutter/ephemeral/
-
-# Visual Studio user-specific files.
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# Visual Studio build-related files.
-x64/
-x86/
-
-# Visual Studio cache files
-# files ending in .cache can be ignored
-*.[Cc]ache
-# but keep track of directories ending in .cache
-!*.[Cc]ache/

windows/CMakeLists.txt

-cmake_minimum_required(VERSION 3.14)
-project(ifarm LANGUAGES CXX)
-
-set(BINARY_NAME "ifarm")
-
-cmake_policy(SET CMP0063 NEW)
-
-set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
-
-# Configure build options.
-get_property(IS_MULTICONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
-if(IS_MULTICONFIG)
-  set(CMAKE_CONFIGURATION_TYPES "Debug;Profile;Release"
-    CACHE STRING "" FORCE)
-else()
-  if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
-    set(CMAKE_BUILD_TYPE "Debug" CACHE
-      STRING "Flutter build mode" FORCE)
-    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
-      "Debug" "Profile" "Release")
-  endif()
-endif()
-
-set(CMAKE_EXE_LINKER_FLAGS_PROFILE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
-set(CMAKE_SHARED_LINKER_FLAGS_PROFILE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
-set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE}")
-set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}")
-
-# Use Unicode for all projects.
-add_definitions(-DUNICODE -D_UNICODE)
-
-# Compilation settings that should be applied to most targets.
-function(APPLY_STANDARD_SETTINGS TARGET)
-  target_compile_features(${TARGET} PUBLIC cxx_std_17)
-  target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100")
-  target_compile_options(${TARGET} PRIVATE /EHsc)
-  target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0")
-  target_compile_definitions(${TARGET} PRIVATE "$<$<CONFIG:Debug>:_DEBUG>")
-endfunction()
-
-set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
-
-# Flutter library and tool build rules.
-add_subdirectory(${FLUTTER_MANAGED_DIR})
-
-# Application build
-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 "$<TARGET_FILE_DIR:${BINARY_NAME}>")
-# 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)

windows/flutter/CMakeLists.txt

-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 "${EPHEMERAL_DIR}/cpp_client_wrapper")
-
-# === Flutter Library ===
-set(FLUTTER_LIBRARY "${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"
-      windows-x64 $<CONFIG>
-  VERBATIM
-)
-add_custom_target(flutter_assemble DEPENDS
-  "${FLUTTER_LIBRARY}"
-  ${FLUTTER_LIBRARY_HEADERS}
-  ${CPP_WRAPPER_SOURCES_CORE}
-  ${CPP_WRAPPER_SOURCES_PLUGIN}
-  ${CPP_WRAPPER_SOURCES_APP}
-)

windows/flutter/generated_plugin_registrant.cc

-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#include "generated_plugin_registrant.h"
-
-#include <connectivity_plus_windows/connectivity_plus_windows_plugin.h>
-
-void RegisterPlugins(flutter::PluginRegistry* registry) {
-  ConnectivityPlusWindowsPluginRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("ConnectivityPlusWindowsPlugin"));
-}

windows/flutter/generated_plugin_registrant.h

-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#ifndef GENERATED_PLUGIN_REGISTRANT_
-#define GENERATED_PLUGIN_REGISTRANT_
-
-#include <flutter/plugin_registry.h>
-
-// Registers Flutter plugins.
-void RegisterPlugins(flutter::PluginRegistry* registry);
-
-#endif  // GENERATED_PLUGIN_REGISTRANT_

windows/flutter/generated_plugins.cmake

-#
-# Generated file, do not edit.
-#
-
-list(APPEND FLUTTER_PLUGIN_LIST
-  connectivity_plus_windows
-)
-
-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 $<TARGET_FILE:${plugin}_plugin>)
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
-endforeach(plugin)

windows/runner/CMakeLists.txt

-cmake_minimum_required(VERSION 3.14)
-project(runner LANGUAGES CXX)
-
-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_standard_settings(${BINARY_NAME})
-target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX")
-target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app)
-target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
-add_dependencies(${BINARY_NAME} flutter_assemble)

windows/runner/Runner.rc

-// 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
-//
-
-#ifdef FLUTTER_BUILD_NUMBER
-#define VERSION_AS_NUMBER FLUTTER_BUILD_NUMBER
-#else
-#define VERSION_AS_NUMBER 1,0,0
-#endif
-
-#ifdef FLUTTER_BUILD_NAME
-#define VERSION_AS_STRING #FLUTTER_BUILD_NAME
-#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", "ifarm" "\0"
-            VALUE "FileVersion", VERSION_AS_STRING "\0"
-            VALUE "InternalName", "ifarm" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2022 com.example. All rights reserved." "\0"
-            VALUE "OriginalFilename", "ifarm.exe" "\0"
-            VALUE "ProductName", "ifarm" "\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

windows/runner/flutter_window.cpp

-#include "flutter_window.h"
-
-#include <optional>
-
-#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<flutter::FlutterViewController>(
-      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());
-  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<LRESULT> 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);
-}

windows/runner/flutter_window.h

-#ifndef RUNNER_FLUTTER_WINDOW_H_
-#define RUNNER_FLUTTER_WINDOW_H_
-
-#include <flutter/dart_project.h>
-#include <flutter/flutter_view_controller.h>
-
-#include <memory>
-
-#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::FlutterViewController> flutter_controller_;
-};
-
-#endif  // RUNNER_FLUTTER_WINDOW_H_

windows/runner/main.cpp

-#include <flutter/dart_project.h>
-#include <flutter/flutter_view_controller.h>
-#include <windows.h>
-
-#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<std::string> 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.CreateAndShow(L"ifarm", origin, size)) {
-    return EXIT_FAILURE;
-  }
-  window.SetQuitOnClose(true);
-
-  ::MSG msg;
-  while (::GetMessage(&msg, nullptr, 0, 0)) {
-    ::TranslateMessage(&msg);
-    ::DispatchMessage(&msg);
-  }
-
-  ::CoUninitialize();
-  return EXIT_SUCCESS;
-}

windows/runner/resource.h

-//{{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

windows/runner/runner.exe.manifest

-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
-  <application xmlns="urn:schemas-microsoft-com:asm.v3">
-    <windowsSettings>
-      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
-    </windowsSettings>
-  </application>
-  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
-    <application>
-      <!-- Windows 10 -->
-      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
-      <!-- Windows 8.1 -->
-      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
-      <!-- Windows 8 -->
-      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
-      <!-- Windows 7 -->
-      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
-    </application>
-  </compatibility>
-</assembly>

windows/runner/utils.cpp

-#include "utils.h"
-
-#include <flutter_windows.h>
-#include <io.h>
-#include <stdio.h>
-#include <windows.h>
-
-#include <iostream>
-
-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<std::string> 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::string>();
-  }
-
-  std::vector<std::string> 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);
-  if (target_length == 0) {
-    return std::string();
-  }
-  std::string utf8_string;
-  utf8_string.resize(target_length);
-  int converted_length = ::WideCharToMultiByte(
-      CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string,
-      -1, utf8_string.data(),
-      target_length, nullptr, nullptr);
-  if (converted_length == 0) {
-    return std::string();
-  }
-  return utf8_string;
-}

windows/runner/utils.h

-#ifndef RUNNER_UTILS_H_
-#define RUNNER_UTILS_H_
-
-#include <string>
-#include <vector>
-
-// 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<std::string>,
-// encoded in UTF-8. Returns an empty std::vector<std::string> on failure.
-std::vector<std::string> GetCommandLineArguments();
-
-#endif  // RUNNER_UTILS_H_

windows/runner/win32_window.cpp

-#include "win32_window.h"
-
-#include <flutter_windows.h>
-
-#include "resource.h"
-
-namespace {
-
-constexpr const wchar_t kWindowClassName[] = L"FLUTTER_RUNNER_WIN32_WINDOW";
-
-// 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<int>(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<EnableNonClientDpiScaling*>(
-          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 registar 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::CreateAndShow(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<LONG>(origin.x),
-                              static_cast<LONG>(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 | WS_VISIBLE,
-      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;
-  }
-
-  return OnCreate();
-}
-
-// 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<CREATESTRUCT*>(lparam);
-    SetWindowLongPtr(window, GWLP_USERDATA,
-                     reinterpret_cast<LONG_PTR>(window_struct->lpCreateParams));
-
-    auto that = static_cast<Win32Window*>(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<RECT*>(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;
-  }
-
-  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<Win32Window*>(
-      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.
-}

windows/runner/win32_window.h

-#ifndef RUNNER_WIN32_WINDOW_H_
-#define RUNNER_WIN32_WINDOW_H_
-
-#include <windows.h>
-
-#include <functional>
-#include <memory>
-#include <string>
-
-// 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 and shows a win32 window with |title| and position and size 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 to will treat the width height passed in to this function
-  // as logical pixels and scale to appropriate for the default monitor. Returns
-  // true if the window was created successfully.
-  bool CreateAndShow(const std::wstring& title,
-                     const Point& origin,
-                     const Size& size);
-
-  // 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
-  // responsponds 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;
-
-  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_