From df61e5aa5eccf8e1d9e13d4b6fd45be24c3f1e77 Mon Sep 17 00:00:00 2001 From: gladson97 Date: Sat, 17 Apr 2021 15:27:55 +0530 Subject: [PATCH 1/2] Migrate to null safety --- lib/equalizer.dart | 8 ++++---- pubspec.yaml | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/lib/equalizer.dart b/lib/equalizer.dart index e3524c5..7bf72db 100644 --- a/lib/equalizer.dart +++ b/lib/equalizer.dart @@ -55,12 +55,12 @@ class Equalizer { /// Returns the band level range in a list of integers represented in [dB]. /// The first element is /// the lower limit of the range, the second element the upper limit. - static Future> getBandLevelRange() async { + static Future?> getBandLevelRange() async { return (await _channel.invokeMethod('getBandLevelRange')).cast(); } /// Returns the band level in [dB]. - static Future getBandLevel(int bandId) async { + static Future getBandLevel(int bandId) async { return await _channel.invokeMethod('getBandLevel', bandId); } @@ -78,12 +78,12 @@ class Equalizer { } /// Returns the center band frequencies in milliHertz. - static Future> getCenterBandFreqs() async { + static Future?> getCenterBandFreqs() async { return (await _channel.invokeMethod('getCenterBandFreqs')).cast(); } /// Returns the preset names available on device. - static Future> getPresetNames() async { + static Future?> getPresetNames() async { return (await _channel.invokeMethod('getPresetNames')).cast(); } diff --git a/pubspec.yaml b/pubspec.yaml index 81b113e..f0105e3 100644 --- a/pubspec.yaml +++ b/pubspec.yaml @@ -4,7 +4,7 @@ version: 0.0.2+2 homepage: https://github.com/rohansohonee/equalizer environment: - sdk: ">=2.7.0 <3.0.0" + sdk: '>=2.12.0 <3.0.0' flutter: ">=1.10.0" dependencies: From 84c15ca304a8129a1cad5a6891059fb411f0fc55 Mon Sep 17 00:00:00 2001 From: gladson97 Date: Sat, 17 Apr 2021 16:06:41 +0530 Subject: [PATCH 2/2] ChangeLog: * Recreate Example Project * Migrate Exapmle to Null safety --- example/android/app/build.gradle | 15 +- .../android/app/src/debug/AndroidManifest.xml | 2 +- .../android/app/src/main/AndroidManifest.xml | 34 ++- .../equalizer_example/MainActivity.java | 6 - .../com/rohansohonee/example/MainActivity.kt | 6 + .../res/drawable-v21/launch_background.xml | 12 + .../app/src/main/res/values-night/styles.xml | 18 ++ .../app/src/main/res/values/styles.xml | 8 +- .../app/src/profile/AndroidManifest.xml | 2 +- example/android/build.gradle | 4 +- example/android/gradle.properties | 1 - .../gradle/wrapper/gradle-wrapper.properties | 2 +- example/ios/Runner/AppDelegate.swift | 13 + example/ios/Runner/Runner-Bridging-Header.h | 1 + example/lib/main.dart | 34 +-- example/pubspec.yaml | 8 +- example/test/widget_test.dart | 2 +- example/web/favicon.png | Bin 0 -> 917 bytes example/web/icons/Icon-192.png | Bin 0 -> 5292 bytes example/web/icons/Icon-512.png | Bin 0 -> 8252 bytes example/web/index.html | 45 ++++ example/web/manifest.json | 23 ++ example/windows/.gitignore | 17 ++ example/windows/CMakeLists.txt | 95 +++++++ example/windows/flutter/CMakeLists.txt | 103 ++++++++ .../flutter/generated_plugin_registrant.cc | 9 + .../flutter/generated_plugin_registrant.h | 13 + .../windows/flutter/generated_plugins.cmake | 15 ++ example/windows/runner/CMakeLists.txt | 18 ++ example/windows/runner/Runner.rc | 121 +++++++++ example/windows/runner/flutter_window.cpp | 64 +++++ example/windows/runner/flutter_window.h | 39 +++ example/windows/runner/main.cpp | 42 +++ example/windows/runner/resource.h | 16 ++ example/windows/runner/resources/app_icon.ico | Bin 0 -> 33772 bytes example/windows/runner/run_loop.cpp | 66 +++++ example/windows/runner/run_loop.h | 40 +++ example/windows/runner/runner.exe.manifest | 20 ++ example/windows/runner/utils.cpp | 64 +++++ example/windows/runner/utils.h | 19 ++ example/windows/runner/win32_window.cpp | 245 ++++++++++++++++++ example/windows/runner/win32_window.h | 98 +++++++ 42 files changed, 1280 insertions(+), 60 deletions(-) delete mode 100644 example/android/app/src/main/java/com/rohansohonee/equalizer_example/MainActivity.java create mode 100644 example/android/app/src/main/kotlin/com/rohansohonee/example/MainActivity.kt create mode 100644 example/android/app/src/main/res/drawable-v21/launch_background.xml create mode 100644 example/android/app/src/main/res/values-night/styles.xml create mode 100644 example/ios/Runner/AppDelegate.swift create mode 100644 example/ios/Runner/Runner-Bridging-Header.h create mode 100644 example/web/favicon.png create mode 100644 example/web/icons/Icon-192.png create mode 100644 example/web/icons/Icon-512.png create mode 100644 example/web/index.html create mode 100644 example/web/manifest.json create mode 100644 example/windows/.gitignore create mode 100644 example/windows/CMakeLists.txt create mode 100644 example/windows/flutter/CMakeLists.txt create mode 100644 example/windows/flutter/generated_plugin_registrant.cc create mode 100644 example/windows/flutter/generated_plugin_registrant.h create mode 100644 example/windows/flutter/generated_plugins.cmake create mode 100644 example/windows/runner/CMakeLists.txt create mode 100644 example/windows/runner/Runner.rc create mode 100644 example/windows/runner/flutter_window.cpp create mode 100644 example/windows/runner/flutter_window.h create mode 100644 example/windows/runner/main.cpp create mode 100644 example/windows/runner/resource.h create mode 100644 example/windows/runner/resources/app_icon.ico create mode 100644 example/windows/runner/run_loop.cpp create mode 100644 example/windows/runner/run_loop.h create mode 100644 example/windows/runner/runner.exe.manifest create mode 100644 example/windows/runner/utils.cpp create mode 100644 example/windows/runner/utils.h create mode 100644 example/windows/runner/win32_window.cpp create mode 100644 example/windows/runner/win32_window.h diff --git a/example/android/app/build.gradle b/example/android/app/build.gradle index 0fca9dc..d902c3d 100644 --- a/example/android/app/build.gradle +++ b/example/android/app/build.gradle @@ -22,20 +22,21 @@ if (flutterVersionName == null) { } apply plugin: 'com.android.application' +apply plugin: 'kotlin-android' apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" android { - compileSdkVersion 28 + compileSdkVersion 30 - lintOptions { - disable 'InvalidPackage' + sourceSets { + main.java.srcDirs += 'src/main/kotlin' } defaultConfig { // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). - applicationId "com.rohansohonee.equalizer_example" + applicationId "com.rohansohonee.example" minSdkVersion 16 - targetSdkVersion 28 + targetSdkVersion 30 versionCode flutterVersionCode.toInteger() versionName flutterVersionName } @@ -52,3 +53,7 @@ android { flutter { source '../..' } + +dependencies { + implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" +} diff --git a/example/android/app/src/debug/AndroidManifest.xml b/example/android/app/src/debug/AndroidManifest.xml index 1b76297..db41d1d 100644 --- a/example/android/app/src/debug/AndroidManifest.xml +++ b/example/android/app/src/debug/AndroidManifest.xml @@ -1,5 +1,5 @@ + package="com.rohansohonee.example"> diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml index c849f4f..83b1a3f 100644 --- a/example/android/app/src/main/AndroidManifest.xml +++ b/example/android/app/src/main/AndroidManifest.xml @@ -1,41 +1,37 @@ - + package="com.rohansohonee.example"> - - + + + android:name="io.flutter.embedding.android.NormalTheme" + android:resource="@style/NormalTheme" + /> + android:name="io.flutter.embedding.android.SplashScreenDrawable" + android:resource="@drawable/launch_background" + /> - - + + + + + + + + diff --git a/example/android/app/src/main/res/values-night/styles.xml b/example/android/app/src/main/res/values-night/styles.xml new file mode 100644 index 0000000..449a9f9 --- /dev/null +++ b/example/android/app/src/main/res/values-night/styles.xml @@ -0,0 +1,18 @@ + + + + + + + diff --git a/example/android/app/src/main/res/values/styles.xml b/example/android/app/src/main/res/values/styles.xml index 1f83a33..d74aa35 100644 --- a/example/android/app/src/main/res/values/styles.xml +++ b/example/android/app/src/main/res/values/styles.xml @@ -1,7 +1,7 @@ - - diff --git a/example/android/app/src/profile/AndroidManifest.xml b/example/android/app/src/profile/AndroidManifest.xml index 1b76297..db41d1d 100644 --- a/example/android/app/src/profile/AndroidManifest.xml +++ b/example/android/app/src/profile/AndroidManifest.xml @@ -1,5 +1,5 @@ + package="com.rohansohonee.example"> diff --git a/example/android/build.gradle b/example/android/build.gradle index e0d7ae2..c505a86 100644 --- a/example/android/build.gradle +++ b/example/android/build.gradle @@ -1,11 +1,13 @@ buildscript { + ext.kotlin_version = '1.3.50' repositories { google() jcenter() } dependencies { - classpath 'com.android.tools.build:gradle:3.5.0' + classpath 'com.android.tools.build:gradle:4.1.0' + classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" } } diff --git a/example/android/gradle.properties b/example/android/gradle.properties index 38c8d45..94adc3a 100644 --- a/example/android/gradle.properties +++ b/example/android/gradle.properties @@ -1,4 +1,3 @@ org.gradle.jvmargs=-Xmx1536M -android.enableR8=true android.useAndroidX=true android.enableJetifier=true diff --git a/example/android/gradle/wrapper/gradle-wrapper.properties b/example/android/gradle/wrapper/gradle-wrapper.properties index 296b146..bc6a58a 100644 --- a/example/android/gradle/wrapper/gradle-wrapper.properties +++ b/example/android/gradle/wrapper/gradle-wrapper.properties @@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists -distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip +distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip diff --git a/example/ios/Runner/AppDelegate.swift b/example/ios/Runner/AppDelegate.swift new file mode 100644 index 0000000..70693e4 --- /dev/null +++ b/example/ios/Runner/AppDelegate.swift @@ -0,0 +1,13 @@ +import UIKit +import Flutter + +@UIApplicationMain +@objc class AppDelegate: FlutterAppDelegate { + override func application( + _ application: UIApplication, + didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? + ) -> Bool { + GeneratedPluginRegistrant.register(with: self) + return super.application(application, didFinishLaunchingWithOptions: launchOptions) + } +} diff --git a/example/ios/Runner/Runner-Bridging-Header.h b/example/ios/Runner/Runner-Bridging-Header.h new file mode 100644 index 0000000..308a2a5 --- /dev/null +++ b/example/ios/Runner/Runner-Bridging-Header.h @@ -0,0 +1 @@ +#import "GeneratedPluginRegistrant.h" diff --git a/example/lib/main.dart b/example/lib/main.dart index 65ebced..10feb17 100644 --- a/example/lib/main.dart +++ b/example/lib/main.dart @@ -1,9 +1,9 @@ import 'dart:async'; - import 'package:equalizer/equalizer.dart'; import 'package:flutter/material.dart'; import 'package:flutter/services.dart'; import 'package:flutter_xlider/flutter_xlider.dart'; +// import 'package:flutter_xlider/flutter_xlider.dart'; void main() => runApp(MyApp()); @@ -74,7 +74,7 @@ class _MyAppState extends State { }, ), ), - FutureBuilder>( + FutureBuilder?>( future: Equalizer.getBandLevelRange(), builder: (context, snapshot) { return snapshot.connectionState == ConnectionState.done @@ -93,22 +93,22 @@ class CustomEQ extends StatefulWidget { const CustomEQ(this.enabled, this.bandLevelRange); final bool enabled; - final List bandLevelRange; + final List? bandLevelRange; @override _CustomEQState createState() => _CustomEQState(); } class _CustomEQState extends State { - double min, max; - String _selectedValue; - Future> fetchPresets; + double? min, max; + String? _selectedValue; + Future?>? fetchPresets; @override void initState() { super.initState(); - min = widget.bandLevelRange[0].toDouble(); - max = widget.bandLevelRange[1].toDouble(); + min = widget.bandLevelRange![0].toDouble(); + max = widget.bandLevelRange![1].toDouble(); fetchPresets = Equalizer.getPresetNames(); } @@ -116,7 +116,7 @@ class _CustomEQState extends State { Widget build(BuildContext context) { int bandId = 0; - return FutureBuilder>( + return FutureBuilder?>( future: Equalizer.getCenterBandFreqs(), builder: (context, snapshot) { return snapshot.connectionState == ConnectionState.done @@ -124,7 +124,7 @@ class _CustomEQState extends State { children: [ Row( mainAxisAlignment: MainAxisAlignment.center, - children: snapshot.data + children: snapshot.data! .map((freq) => _buildSliderBand(freq, bandId++)) .toList(), ), @@ -145,7 +145,7 @@ class _CustomEQState extends State { children: [ SizedBox( height: 250.0, - child: FutureBuilder( + child: FutureBuilder( future: Equalizer.getBandLevel(bandId), builder: (context, snapshot) { return FlutterSlider( @@ -154,7 +154,7 @@ class _CustomEQState extends State { rtl: true, min: min, max: max, - values: [snapshot.hasData ? snapshot.data.toDouble() : 0], + values: [snapshot.hasData ? snapshot.data!.toDouble() : 0], onDragCompleted: (handlerIndex, lowerValue, upperValue) { Equalizer.setBandLevel(bandId, lowerValue.toInt()); }, @@ -168,11 +168,11 @@ class _CustomEQState extends State { } Widget _buildPresets() { - return FutureBuilder>( + return FutureBuilder?>( future: fetchPresets, builder: (context, snapshot) { if (snapshot.hasData) { - final presets = snapshot.data; + final presets = snapshot.data!; if (presets.isEmpty) return Text('No presets available!'); return DropdownButtonFormField( decoration: InputDecoration( @@ -181,8 +181,8 @@ class _CustomEQState extends State { ), value: _selectedValue, onChanged: widget.enabled - ? (String value) { - Equalizer.setPreset(value); + ? (String? value) { + Equalizer.setPreset(value!); setState(() { _selectedValue = value; }); @@ -196,7 +196,7 @@ class _CustomEQState extends State { }).toList(), ); } else if (snapshot.hasError) - return Text(snapshot.error); + return Text(snapshot.error as String); else return CircularProgressIndicator(); }, diff --git a/example/pubspec.yaml b/example/pubspec.yaml index 1a35b42..00121bb 100644 --- a/example/pubspec.yaml +++ b/example/pubspec.yaml @@ -6,7 +6,7 @@ description: Demonstrates how to use the equalizer plugin. publish_to: 'none' # Remove this line if you wish to publish to pub.dev environment: - sdk: ">=2.7.0 <3.0.0" + sdk: '>=2.12.0 <3.0.0' dependencies: flutter: @@ -22,8 +22,10 @@ dependencies: # The following adds the Cupertino Icons font to your application. # Use with the CupertinoIcons class for iOS style icons. - cupertino_icons: ^0.1.3 - flutter_xlider: ^3.4.0 + cupertino_icons: ^1.0.2 + # flutter_xlider: ^3.4.0 + flutter_xlider: + path: ../../flutter_xlider/ dev_dependencies: flutter_test: diff --git a/example/test/widget_test.dart b/example/test/widget_test.dart index ff2248f..4deb20a 100644 --- a/example/test/widget_test.dart +++ b/example/test/widget_test.dart @@ -19,7 +19,7 @@ void main() { expect( find.byWidgetPredicate( (Widget widget) => widget is Text && - widget.data.startsWith('Running on:'), + widget.data!.startsWith('Running on:'), ), findsOneWidget, ); diff --git a/example/web/favicon.png b/example/web/favicon.png new file mode 100644 index 0000000000000000000000000000000000000000..8aaa46ac1ae21512746f852a42ba87e4165dfdd1 GIT binary patch literal 917 zcmeAS@N?(olHy`uVBq!ia0vp^0wB!61|;P_|4#%`jKx9jP7LeL$-D$|I14-?iy0X7 zltGxWVyS%@P(fs7NJL45ua8x7ey(0(N`6wRUPW#JP&EUCO@$SZnVVXYs8ErclUHn2 zVXFjIVFhG^g!Ppaz)DK8ZIvQ?0~DO|i&7O#^-S~(l1AfjnEK zjFOT9D}DX)@^Za$W4-*MbbUihOG|wNBYh(yU7!lx;>x^|#0uTKVr7USFmqf|i<65o z3raHc^AtelCMM;Vme?vOfh>Xph&xL%(-1c06+^uR^q@XSM&D4+Kp$>4P^%3{)XKjo 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"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" + } + ] +} diff --git a/example/windows/.gitignore b/example/windows/.gitignore new file mode 100644 index 0000000..d492d0d --- /dev/null +++ b/example/windows/.gitignore @@ -0,0 +1,17 @@ +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/ diff --git a/example/windows/CMakeLists.txt b/example/windows/CMakeLists.txt new file mode 100644 index 0000000..abf9040 --- /dev/null +++ b/example/windows/CMakeLists.txt @@ -0,0 +1,95 @@ +cmake_minimum_required(VERSION 3.15) +project(example LANGUAGES CXX) + +set(BINARY_NAME "example") + +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 "$<$:_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 "$") +# Make the "install" step default, as it's required to run. +set(CMAKE_VS_INCLUDE_INSTALL_TO_DEFAULT_BUILD 1) +if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT) + set(CMAKE_INSTALL_PREFIX "${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 "${INSTALL_BUNDLE_DATA_DIR}" + CONFIGURATIONS Profile;Release + COMPONENT Runtime) diff --git a/example/windows/flutter/CMakeLists.txt b/example/windows/flutter/CMakeLists.txt new file mode 100644 index 0000000..b02c548 --- /dev/null +++ b/example/windows/flutter/CMakeLists.txt @@ -0,0 +1,103 @@ +cmake_minimum_required(VERSION 3.15) + +set(EPHEMERAL_DIR "${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 $ + 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/example/windows/flutter/generated_plugin_registrant.cc b/example/windows/flutter/generated_plugin_registrant.cc new file mode 100644 index 0000000..4bfa0f3 --- /dev/null +++ b/example/windows/flutter/generated_plugin_registrant.cc @@ -0,0 +1,9 @@ +// +// Generated file. Do not edit. +// + +#include "generated_plugin_registrant.h" + + +void RegisterPlugins(flutter::PluginRegistry* registry) { +} diff --git a/example/windows/flutter/generated_plugin_registrant.h b/example/windows/flutter/generated_plugin_registrant.h new file mode 100644 index 0000000..9846246 --- /dev/null +++ b/example/windows/flutter/generated_plugin_registrant.h @@ -0,0 +1,13 @@ +// +// Generated file. Do not edit. +// + +#ifndef GENERATED_PLUGIN_REGISTRANT_ +#define GENERATED_PLUGIN_REGISTRANT_ + +#include + +// Registers Flutter plugins. +void RegisterPlugins(flutter::PluginRegistry* registry); + +#endif // GENERATED_PLUGIN_REGISTRANT_ diff --git a/example/windows/flutter/generated_plugins.cmake b/example/windows/flutter/generated_plugins.cmake new file mode 100644 index 0000000..4d10c25 --- /dev/null +++ b/example/windows/flutter/generated_plugins.cmake @@ -0,0 +1,15 @@ +# +# Generated file, do not edit. +# + +list(APPEND FLUTTER_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) diff --git a/example/windows/runner/CMakeLists.txt b/example/windows/runner/CMakeLists.txt new file mode 100644 index 0000000..977e38b --- /dev/null +++ b/example/windows/runner/CMakeLists.txt @@ -0,0 +1,18 @@ +cmake_minimum_required(VERSION 3.15) +project(runner LANGUAGES CXX) + +add_executable(${BINARY_NAME} WIN32 + "flutter_window.cpp" + "main.cpp" + "run_loop.cpp" + "utils.cpp" + "win32_window.cpp" + "${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) diff --git a/example/windows/runner/Runner.rc b/example/windows/runner/Runner.rc new file mode 100644 index 0000000..0aeaeda --- /dev/null +++ b/example/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 +// + +#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.rohansohonee" "\0" + VALUE "FileDescription", "A new Flutter project." "\0" + VALUE "FileVersion", VERSION_AS_STRING "\0" + VALUE "InternalName", "example" "\0" + VALUE "LegalCopyright", "Copyright (C) 2021 com.rohansohonee. All rights reserved." "\0" + VALUE "OriginalFilename", "example.exe" "\0" + VALUE "ProductName", "example" "\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/example/windows/runner/flutter_window.cpp b/example/windows/runner/flutter_window.cpp new file mode 100644 index 0000000..c422723 --- /dev/null +++ b/example/windows/runner/flutter_window.cpp @@ -0,0 +1,64 @@ +#include "flutter_window.h" + +#include + +#include "flutter/generated_plugin_registrant.h" + +FlutterWindow::FlutterWindow(RunLoop* run_loop, + const flutter::DartProject& project) + : run_loop_(run_loop), 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()); + run_loop_->RegisterFlutterInstance(flutter_controller_->engine()); + SetChildContent(flutter_controller_->view()->GetNativeWindow()); + return true; +} + +void FlutterWindow::OnDestroy() { + if (flutter_controller_) { + run_loop_->UnregisterFlutterInstance(flutter_controller_->engine()); + 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 opporutunity 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/example/windows/runner/flutter_window.h b/example/windows/runner/flutter_window.h new file mode 100644 index 0000000..b663ddd --- /dev/null +++ b/example/windows/runner/flutter_window.h @@ -0,0 +1,39 @@ +#ifndef RUNNER_FLUTTER_WINDOW_H_ +#define RUNNER_FLUTTER_WINDOW_H_ + +#include +#include + +#include + +#include "run_loop.h" +#include "win32_window.h" + +// A window that does nothing but host a Flutter view. +class FlutterWindow : public Win32Window { + public: + // Creates a new FlutterWindow driven by the |run_loop|, hosting a + // Flutter view running |project|. + explicit FlutterWindow(RunLoop* run_loop, + 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 run loop driving events for this window. + RunLoop* run_loop_; + + // 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/example/windows/runner/main.cpp b/example/windows/runner/main.cpp new file mode 100644 index 0000000..b637809 --- /dev/null +++ b/example/windows/runner/main.cpp @@ -0,0 +1,42 @@ +#include +#include +#include + +#include "flutter_window.h" +#include "run_loop.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); + + RunLoop run_loop; + + flutter::DartProject project(L"data"); + + std::vector command_line_arguments = + GetCommandLineArguments(); + + project.set_dart_entrypoint_arguments(std::move(command_line_arguments)); + + FlutterWindow window(&run_loop, project); + Win32Window::Point origin(10, 10); + Win32Window::Size size(1280, 720); + if (!window.CreateAndShow(L"example", origin, size)) { + return EXIT_FAILURE; + } + window.SetQuitOnClose(true); + + run_loop.Run(); + + ::CoUninitialize(); + return EXIT_SUCCESS; +} diff --git a/example/windows/runner/resource.h b/example/windows/runner/resource.h new file mode 100644 index 0000000..66a65d1 --- /dev/null +++ b/example/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/example/windows/runner/resources/app_icon.ico b/example/windows/runner/resources/app_icon.ico new file mode 100644 index 0000000000000000000000000000000000000000..c04e20caf6370ebb9253ad831cc31de4a9c965f6 GIT 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b/example/windows/runner/run_loop.cpp new file mode 100644 index 0000000..2d6636a --- /dev/null +++ b/example/windows/runner/run_loop.cpp @@ -0,0 +1,66 @@ +#include "run_loop.h" + +#include + +#include + +RunLoop::RunLoop() {} + +RunLoop::~RunLoop() {} + +void RunLoop::Run() { + bool keep_running = true; + TimePoint next_flutter_event_time = TimePoint::clock::now(); + while (keep_running) { + std::chrono::nanoseconds wait_duration = + std::max(std::chrono::nanoseconds(0), + next_flutter_event_time - TimePoint::clock::now()); + ::MsgWaitForMultipleObjects( + 0, nullptr, FALSE, static_cast(wait_duration.count() / 1000), + QS_ALLINPUT); + bool processed_events = false; + MSG message; + // All pending Windows messages must be processed; MsgWaitForMultipleObjects + // won't return again for items left in the queue after PeekMessage. + while (::PeekMessage(&message, nullptr, 0, 0, PM_REMOVE)) { + processed_events = true; + if (message.message == WM_QUIT) { + keep_running = false; + break; + } + ::TranslateMessage(&message); + ::DispatchMessage(&message); + // Allow Flutter to process messages each time a Windows message is + // processed, to prevent starvation. + next_flutter_event_time = + std::min(next_flutter_event_time, ProcessFlutterMessages()); + } + // If the PeekMessage loop didn't run, process Flutter messages. + if (!processed_events) { + next_flutter_event_time = + std::min(next_flutter_event_time, ProcessFlutterMessages()); + } + } +} + +void RunLoop::RegisterFlutterInstance( + flutter::FlutterEngine* flutter_instance) { + flutter_instances_.insert(flutter_instance); +} + +void RunLoop::UnregisterFlutterInstance( + flutter::FlutterEngine* flutter_instance) { + flutter_instances_.erase(flutter_instance); +} + +RunLoop::TimePoint RunLoop::ProcessFlutterMessages() { + TimePoint next_event_time = TimePoint::max(); + for (auto instance : flutter_instances_) { + std::chrono::nanoseconds wait_duration = instance->ProcessMessages(); + if (wait_duration != std::chrono::nanoseconds::max()) { + next_event_time = + std::min(next_event_time, TimePoint::clock::now() + wait_duration); + } + } + return next_event_time; +} diff --git a/example/windows/runner/run_loop.h b/example/windows/runner/run_loop.h new file mode 100644 index 0000000..000d362 --- /dev/null +++ b/example/windows/runner/run_loop.h @@ -0,0 +1,40 @@ +#ifndef RUNNER_RUN_LOOP_H_ +#define RUNNER_RUN_LOOP_H_ + +#include + +#include +#include + +// A runloop that will service events for Flutter instances as well +// as native messages. +class RunLoop { + public: + RunLoop(); + ~RunLoop(); + + // Prevent copying + RunLoop(RunLoop const&) = delete; + RunLoop& operator=(RunLoop const&) = delete; + + // Runs the run loop until the application quits. + void Run(); + + // Registers the given Flutter instance for event servicing. + void RegisterFlutterInstance( + flutter::FlutterEngine* flutter_instance); + + // Unregisters the given Flutter instance from event servicing. + void UnregisterFlutterInstance( + flutter::FlutterEngine* flutter_instance); + + private: + using TimePoint = std::chrono::steady_clock::time_point; + + // Processes all currently pending messages for registered Flutter instances. + TimePoint ProcessFlutterMessages(); + + std::set flutter_instances_; +}; + +#endif // RUNNER_RUN_LOOP_H_ diff --git a/example/windows/runner/runner.exe.manifest b/example/windows/runner/runner.exe.manifest new file mode 100644 index 0000000..c977c4a --- /dev/null +++ b/example/windows/runner/runner.exe.manifest @@ -0,0 +1,20 @@ + + + + + PerMonitorV2 + + + + + + + + + + + + + + + diff --git a/example/windows/runner/utils.cpp b/example/windows/runner/utils.cpp new file mode 100644 index 0000000..d19bdbb --- /dev/null +++ b/example/windows/runner/utils.cpp @@ -0,0 +1,64 @@ +#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); + 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; +} diff --git a/example/windows/runner/utils.h b/example/windows/runner/utils.h new file mode 100644 index 0000000..3879d54 --- /dev/null +++ b/example/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/example/windows/runner/win32_window.cpp b/example/windows/runner/win32_window.cpp new file mode 100644 index 0000000..c10f08d --- /dev/null +++ b/example/windows/runner/win32_window.cpp @@ -0,0 +1,245 @@ +#include "win32_window.h" + +#include + +#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(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 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(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 | 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(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; + } + + 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. +} diff --git a/example/windows/runner/win32_window.h b/example/windows/runner/win32_window.h new file mode 100644 index 0000000..17ba431 --- /dev/null +++ b/example/windows/runner/win32_window.h @@ -0,0 +1,98 @@ +#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 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_