Implement Linux part of examples (#108068) Add Linux files for hello_world and platform_channel examples
diff --git a/examples/platform_channel/linux/.gitignore b/examples/platform_channel/linux/.gitignore new file mode 100644 index 0000000..d3896c9 --- /dev/null +++ b/examples/platform_channel/linux/.gitignore
@@ -0,0 +1 @@ +flutter/ephemeral
diff --git a/examples/platform_channel/linux/CMakeLists.txt b/examples/platform_channel/linux/CMakeLists.txt new file mode 100644 index 0000000..3272f1e --- /dev/null +++ b/examples/platform_channel/linux/CMakeLists.txt
@@ -0,0 +1,138 @@ +# Project-level configuration. +cmake_minimum_required(VERSION 3.10) +project(runner LANGUAGES CXX) + +# The name of the executable created for the application. Change this to change +# the on-disk name of your application. +set(BINARY_NAME "platform_channel") +# The unique GTK application identifier for this application. See: +# https://wiki.gnome.org/HowDoI/ChooseApplicationID +set(APPLICATION_ID "io.flutter.examples.platform_channel") + +# Explicitly opt in to modern CMake behaviors to avoid warnings with recent +# versions of CMake. +cmake_policy(SET CMP0063 NEW) + +# Load bundled libraries from the lib/ directory relative to the binary. +set(CMAKE_INSTALL_RPATH "$ORIGIN/lib") + +# Root filesystem for cross-building. +if(FLUTTER_TARGET_PLATFORM_SYSROOT) + set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT}) + set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT}) + set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) + set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY) + set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) + set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) +endif() + +# Define build configuration options. +if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES) + set(CMAKE_BUILD_TYPE "Debug" CACHE + STRING "Flutter build mode" FORCE) + set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS + "Debug" "Profile" "Release") +endif() + +# Compilation settings that should be applied to most targets. +# +# Be cautious about adding new options here, as plugins use this function by +# default. In most cases, you should add new options to specific targets instead +# of modifying this function. +function(APPLY_STANDARD_SETTINGS TARGET) + target_compile_features(${TARGET} PUBLIC cxx_std_14) + target_compile_options(${TARGET} PRIVATE -Wall -Werror) + target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>") + target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>") +endfunction() + +# Flutter library and tool build rules. +set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter") +add_subdirectory(${FLUTTER_MANAGED_DIR}) + +# System-level dependencies. +find_package(PkgConfig REQUIRED) +pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0 upower-glib) + +add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}") + +# Define the application target. To change its name, change BINARY_NAME above, +# not the value here, or `flutter run` will no longer work. +# +# Any new source files that you add to the application should be added here. +add_executable(${BINARY_NAME} + "main.cc" + "my_application.cc" + "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc" +) + +# Apply the standard set of build settings. This can be removed for applications +# that need different build settings. +apply_standard_settings(${BINARY_NAME}) + +# Add dependency libraries. Add any application-specific dependencies here. +target_link_libraries(${BINARY_NAME} PRIVATE flutter) +target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK) + +# Run the Flutter tool portions of the build. This must not be removed. +add_dependencies(${BINARY_NAME} flutter_assemble) + +# Only the install-generated bundle's copy of the executable will launch +# correctly, since the resources must in the right relative locations. To avoid +# people trying to run the unbundled copy, put it in a subdirectory instead of +# the default top-level location. +set_target_properties(${BINARY_NAME} + PROPERTIES + RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run" +) + +# Generated plugin build rules, which manage building the plugins and adding +# them to the application. +include(flutter/generated_plugins.cmake) + + +# === Installation === +# By default, "installing" just makes a relocatable bundle in the build +# directory. +set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle") +if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT) + set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE) +endif() + +# Start with a clean build bundle directory every time. +install(CODE " + file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\") + " COMPONENT Runtime) + +set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data") +set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib") + +install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}" + COMPONENT Runtime) + +install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" + COMPONENT Runtime) + +install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}" + COMPONENT Runtime) + +foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES}) + install(FILES "${bundled_library}" + DESTINATION "${INSTALL_BUNDLE_LIB_DIR}" + COMPONENT Runtime) +endforeach(bundled_library) + +# Fully re-copy the assets directory on each build to avoid having stale files +# from a previous install. +set(FLUTTER_ASSET_DIR_NAME "flutter_assets") +install(CODE " + file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\") + " COMPONENT Runtime) +install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}" + DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime) + +# Install the AOT library on non-Debug builds only. +if(NOT CMAKE_BUILD_TYPE MATCHES "Debug") + install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}" + COMPONENT Runtime) +endif()
diff --git a/examples/platform_channel/linux/flutter/CMakeLists.txt b/examples/platform_channel/linux/flutter/CMakeLists.txt new file mode 100644 index 0000000..d5bd016 --- /dev/null +++ b/examples/platform_channel/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@ +# This file controls Flutter-level build steps. It should not be edited. +cmake_minimum_required(VERSION 3.10) + +set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral") + +# Configuration provided via flutter tool. +include(${EPHEMERAL_DIR}/generated_config.cmake) + +# TODO: Move the rest of this into files in ephemeral. See +# https://github.com/flutter/flutter/issues/57146. + +# Serves the same purpose as list(TRANSFORM ... PREPEND ...), +# which isn't available in 3.10. +function(list_prepend LIST_NAME PREFIX) + set(NEW_LIST "") + foreach(element ${${LIST_NAME}}) + list(APPEND NEW_LIST "${PREFIX}${element}") + endforeach(element) + set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE) +endfunction() + +# === Flutter Library === +# System-level dependencies. +find_package(PkgConfig REQUIRED) +pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0) +pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0) +pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0) + +set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so") + +# Published to parent scope for install step. +set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE) +set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE) +set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE) +set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE) + +list(APPEND FLUTTER_LIBRARY_HEADERS + "fl_basic_message_channel.h" + "fl_binary_codec.h" + "fl_binary_messenger.h" + "fl_dart_project.h" + "fl_engine.h" + "fl_json_message_codec.h" + "fl_json_method_codec.h" + "fl_message_codec.h" + "fl_method_call.h" + "fl_method_channel.h" + "fl_method_codec.h" + "fl_method_response.h" + "fl_plugin_registrar.h" + "fl_plugin_registry.h" + "fl_standard_message_codec.h" + "fl_standard_method_codec.h" + "fl_string_codec.h" + "fl_value.h" + "fl_view.h" + "flutter_linux.h" +) +list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/") +add_library(flutter INTERFACE) +target_include_directories(flutter INTERFACE + "${EPHEMERAL_DIR}" +) +target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}") +target_link_libraries(flutter INTERFACE + PkgConfig::GTK + PkgConfig::GLIB + PkgConfig::GIO +) +add_dependencies(flutter flutter_assemble) + +# === Flutter tool backend === +# _phony_ is a non-existent file to force this command to run every time, +# since currently there's no way to get a full input/output list from the +# flutter tool. +add_custom_command( + OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS} + ${CMAKE_CURRENT_BINARY_DIR}/_phony_ + COMMAND ${CMAKE_COMMAND} -E env + ${FLUTTER_TOOL_ENVIRONMENT} + "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh" + ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE} + VERBATIM +) +add_custom_target(flutter_assemble DEPENDS + "${FLUTTER_LIBRARY}" + ${FLUTTER_LIBRARY_HEADERS} +)
diff --git a/examples/platform_channel/linux/flutter/generated_plugin_registrant.cc b/examples/platform_channel/linux/flutter/generated_plugin_registrant.cc new file mode 100644 index 0000000..e71a16d --- /dev/null +++ b/examples/platform_channel/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@ +// +// Generated file. Do not edit. +// + +// clang-format off + +#include "generated_plugin_registrant.h" + + +void fl_register_plugins(FlPluginRegistry* registry) { +}
diff --git a/examples/platform_channel/linux/flutter/generated_plugin_registrant.h b/examples/platform_channel/linux/flutter/generated_plugin_registrant.h new file mode 100644 index 0000000..e0f0a47 --- /dev/null +++ b/examples/platform_channel/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@ +// +// Generated file. Do not edit. +// + +// clang-format off + +#ifndef GENERATED_PLUGIN_REGISTRANT_ +#define GENERATED_PLUGIN_REGISTRANT_ + +#include <flutter_linux/flutter_linux.h> + +// Registers Flutter plugins. +void fl_register_plugins(FlPluginRegistry* registry); + +#endif // GENERATED_PLUGIN_REGISTRANT_
diff --git a/examples/platform_channel/linux/flutter/generated_plugins.cmake b/examples/platform_channel/linux/flutter/generated_plugins.cmake new file mode 100644 index 0000000..2e1de87 --- /dev/null +++ b/examples/platform_channel/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@ +# +# Generated file, do not edit. +# + +list(APPEND FLUTTER_PLUGIN_LIST +) + +list(APPEND FLUTTER_FFI_PLUGIN_LIST +) + +set(PLUGIN_BUNDLED_LIBRARIES) + +foreach(plugin ${FLUTTER_PLUGIN_LIST}) + add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin}) + target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin) + list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>) + list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries}) +endforeach(plugin) + +foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST}) + add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin}) + list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries}) +endforeach(ffi_plugin)
diff --git a/examples/platform_channel/linux/main.cc b/examples/platform_channel/linux/main.cc new file mode 100644 index 0000000..e7c5c54 --- /dev/null +++ b/examples/platform_channel/linux/main.cc
@@ -0,0 +1,6 @@ +#include "my_application.h" + +int main(int argc, char** argv) { + g_autoptr(MyApplication) app = my_application_new(); + return g_application_run(G_APPLICATION(app), argc, argv); +}
diff --git a/examples/platform_channel/linux/my_application.cc b/examples/platform_channel/linux/my_application.cc new file mode 100644 index 0000000..da99a0b --- /dev/null +++ b/examples/platform_channel/linux/my_application.cc
@@ -0,0 +1,297 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "my_application.h" + +#include <flutter_linux/flutter_linux.h> +#include <math.h> +#include <upower.h> +#ifdef GDK_WINDOWING_X11 +#include <gdk/gdkx.h> +#endif + +#include "flutter/generated_plugin_registrant.h" + +struct _MyApplication { + GtkApplication parent_instance; + char** dart_entrypoint_arguments; + + FlView* view; + + // Connection to UPower. + UpClient* up_client; + GPtrArray* battery_devices; + + // Channel for Dart code to request the battery information. + FlMethodChannel* battery_channel; + + // Channel to send updates to Dart code about battery charging state. + FlEventChannel* charging_channel; + gchar* last_charge_event; + bool emit_charge_events; +}; + +G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION) + +// Checks the charging state and emits an event if necessary. +static void update_charging_state(MyApplication* self) { + if (!self->emit_charge_events) { + return; + } + + const gchar* charge_event = "discharging"; + for (guint i = 0; i < self->battery_devices->len; i++) { + UpDevice* device = + static_cast<UpDevice*>(g_ptr_array_index(self->battery_devices, i)); + + guint state; + g_object_get(device, "state", &state, nullptr); + if (state == UP_DEVICE_STATE_CHARGING || + state == UP_DEVICE_STATE_FULLY_CHARGED) { + charge_event = "charging"; + } + } + + if (g_strcmp0(charge_event, self->last_charge_event) != 0) { + g_autoptr(GError) error = nullptr; + g_autoptr(FlValue) value = fl_value_new_string(charge_event); + if (!fl_event_channel_send(self->charging_channel, value, nullptr, + &error)) { + g_warning("Failed to send charging event: %s", error->message); + return; + } + g_free(self->last_charge_event); + self->last_charge_event = g_strdup(charge_event); + } +} + +// Called when a UPower device changes state. +static void up_device_state_changed_cb(MyApplication* self, GParamSpec* pspec, + UpDevice* device) { + update_charging_state(self); +} + +// Called when UPower devices are added. +static void up_device_added_cb(MyApplication* self, UpDevice* device) { + // Listen for state changes from battery_devices. + guint kind; + g_object_get(device, "kind", &kind, nullptr); + if (kind == UP_DEVICE_KIND_BATTERY) { + g_ptr_array_add(self->battery_devices, g_object_ref(device)); + g_signal_connect_swapped(device, "notify::state", + G_CALLBACK(up_device_state_changed_cb), self); + up_device_state_changed_cb(self, nullptr, device); + } +} + +// Called when UPower devices are removed. +static void up_device_removed_cb(MyApplication* self, UpDevice* device) { + g_ptr_array_remove(self->battery_devices, device); + g_signal_handlers_disconnect_matched( + device, G_SIGNAL_MATCH_FUNC, 0, 0, nullptr, + reinterpret_cast<GClosure*>(up_device_state_changed_cb), nullptr); +} + +// Gets the current battery level. +static FlMethodResponse* get_battery_level(MyApplication* self) { + // Find the first available battery and use that. + for (guint i = 0; i < self->battery_devices->len; i++) { + UpDevice* device = + static_cast<UpDevice*>(g_ptr_array_index(self->battery_devices, i)); + + double percentage; + g_object_get(device, "percentage", &percentage, nullptr); + g_autoptr(FlValue) result = + fl_value_new_int(static_cast<int64_t>(round(percentage))); + return FL_METHOD_RESPONSE(fl_method_success_response_new(result)); + } + + return FL_METHOD_RESPONSE(fl_method_error_response_new( + "NO_BATTERY", "Device does not have a battery.", nullptr)); +} + +// Called when the Dart code requests battery information. +static void battery_method_call_cb(FlMethodChannel* channel, + FlMethodCall* method_call, + gpointer user_data) { + MyApplication* self = static_cast<MyApplication*>(user_data); + + g_autoptr(FlMethodResponse) response = nullptr; + if (strcmp(fl_method_call_get_name(method_call), "getBatteryLevel") == 0) { + response = get_battery_level(self); + } else { + response = FL_METHOD_RESPONSE(fl_method_not_implemented_response_new()); + } + + g_autoptr(GError) error = nullptr; + if (!fl_method_call_respond(method_call, response, &error)) { + g_warning("Failed to send response: %s", error->message); + } +} + +// Called when the Dart code starts listening for charging events. +static FlMethodErrorResponse* charging_listen_cb(FlEventChannel* channel, + FlValue* args, + gpointer user_data) { + MyApplication* self = static_cast<MyApplication*>(user_data); + + self->emit_charge_events = true; + update_charging_state(self); + + return nullptr; +} + +// Called when the Dart code stops listening for charging events. +static FlMethodErrorResponse* charging_cancel_cb(FlEventChannel* channel, + FlValue* args, + gpointer user_data) { + MyApplication* self = static_cast<MyApplication*>(user_data); + + self->emit_charge_events = false; + + return nullptr; +} + +// Creates the platform channels this application provides. +static void create_channels(MyApplication* self) { + FlEngine* engine = fl_view_get_engine(self->view); + FlBinaryMessenger* messenger = fl_engine_get_binary_messenger(engine); + g_autoptr(FlStandardMethodCodec) codec = fl_standard_method_codec_new(); + + self->battery_channel = fl_method_channel_new( + messenger, "samples.flutter.io/battery", FL_METHOD_CODEC(codec)); + fl_method_channel_set_method_call_handler( + self->battery_channel, battery_method_call_cb, self, nullptr); + + self->charging_channel = fl_event_channel_new( + messenger, "samples.flutter.io/charging", FL_METHOD_CODEC(codec)); + fl_event_channel_set_stream_handlers(self->charging_channel, + charging_listen_cb, charging_cancel_cb, + self, nullptr); +} + +// Implements GApplication::activate. +static void my_application_activate(GApplication* application) { + MyApplication* self = MY_APPLICATION(application); + GtkWindow* window = + GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application))); + + // Use a header bar when running in GNOME as this is the common style used + // by applications and is the setup most users will be using (e.g. Ubuntu + // desktop). + // If running on X and not using GNOME then just use a traditional title bar + // in case the window manager does more exotic layout, e.g. tiling. + // If running on Wayland assume the header bar will work (may need changing + // if future cases occur). + gboolean use_header_bar = TRUE; +#ifdef GDK_WINDOWING_X11 + GdkScreen* screen = gtk_window_get_screen(window); + if (GDK_IS_X11_SCREEN(screen)) { + const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen); + if (g_strcmp0(wm_name, "GNOME Shell") != 0) { + use_header_bar = FALSE; + } + } +#endif + if (use_header_bar) { + GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new()); + gtk_widget_show(GTK_WIDGET(header_bar)); + gtk_header_bar_set_title(header_bar, "platform_channel"); + gtk_header_bar_set_show_close_button(header_bar, TRUE); + gtk_window_set_titlebar(window, GTK_WIDGET(header_bar)); + } else { + gtk_window_set_title(window, "platform_channel"); + } + + gtk_window_set_default_size(window, 1280, 720); + gtk_widget_show(GTK_WIDGET(window)); + + g_autoptr(FlDartProject) project = fl_dart_project_new(); + fl_dart_project_set_dart_entrypoint_arguments( + project, self->dart_entrypoint_arguments); + + // Connect to UPower. + self->up_client = up_client_new(); + g_signal_connect_swapped(self->up_client, "device-added", + G_CALLBACK(up_device_added_cb), self); + g_signal_connect_swapped(self->up_client, "device-removed", + G_CALLBACK(up_device_removed_cb), self); + g_autoptr(GPtrArray) devices = up_client_get_devices(self->up_client); + for (guint i = 0; i < devices->len; i++) { + g_autoptr(UpDevice) device = + static_cast<UpDevice*>(g_ptr_array_index(devices, i)); + up_device_added_cb(self, device); + } + + self->view = fl_view_new(project); + gtk_widget_show(GTK_WIDGET(self->view)); + gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(self->view)); + + fl_register_plugins(FL_PLUGIN_REGISTRY(self->view)); + + // Create application specific platform channels. + create_channels(self); + + gtk_widget_grab_focus(GTK_WIDGET(self->view)); +} + +// Implements GApplication::local_command_line. +static gboolean my_application_local_command_line(GApplication* application, + gchar*** arguments, + int* exit_status) { + MyApplication* self = MY_APPLICATION(application); + // Strip out the first argument as it is the binary name. + self->dart_entrypoint_arguments = g_strdupv(*arguments + 1); + + g_autoptr(GError) error = nullptr; + if (!g_application_register(application, nullptr, &error)) { + g_warning("Failed to register: %s", error->message); + *exit_status = 1; + return TRUE; + } + + g_application_activate(application); + *exit_status = 0; + + return TRUE; +} + +// Implements GObject::dispose. +static void my_application_dispose(GObject* object) { + MyApplication* self = MY_APPLICATION(object); + + for (guint i = 0; i < self->battery_devices->len; i++) { + UpDevice* device = + static_cast<UpDevice*>(g_ptr_array_index(self->battery_devices, i)); + g_signal_handlers_disconnect_matched(device, G_SIGNAL_MATCH_DATA, 0, 0, + nullptr, nullptr, self); + } + g_signal_handlers_disconnect_matched(self->up_client, G_SIGNAL_MATCH_DATA, 0, + 0, nullptr, nullptr, self); + + g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev); + g_clear_object(&self->up_client); + g_clear_object(&self->battery_devices); + g_clear_object(&self->battery_channel); + g_clear_object(&self->charging_channel); + g_clear_pointer(&self->last_charge_event, g_free); + G_OBJECT_CLASS(my_application_parent_class)->dispose(object); +} + +static void my_application_class_init(MyApplicationClass* klass) { + G_APPLICATION_CLASS(klass)->activate = my_application_activate; + G_APPLICATION_CLASS(klass)->local_command_line = + my_application_local_command_line; + G_OBJECT_CLASS(klass)->dispose = my_application_dispose; +} + +static void my_application_init(MyApplication* self) { + self->battery_devices = g_ptr_array_new_with_free_func(g_object_unref); +} + +MyApplication* my_application_new() { + return MY_APPLICATION(g_object_new(my_application_get_type(), + "application-id", APPLICATION_ID, "flags", + G_APPLICATION_NON_UNIQUE, nullptr)); +}
diff --git a/examples/platform_channel/linux/my_application.h b/examples/platform_channel/linux/my_application.h new file mode 100644 index 0000000..8c66ec4 --- /dev/null +++ b/examples/platform_channel/linux/my_application.h
@@ -0,0 +1,22 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef FLUTTER_MY_APPLICATION_H_ +#define FLUTTER_MY_APPLICATION_H_ + +#include <gtk/gtk.h> + +G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION, + GtkApplication) + +/** + * my_application_new: + * + * Creates a new Flutter-based application. + * + * Returns: a new #MyApplication. + */ +MyApplication* my_application_new(); + +#endif // FLUTTER_MY_APPLICATION_H_
diff --git a/examples/platform_channel/windows/.clang-format b/examples/platform_channel/windows/.clang-format deleted file mode 100644 index 3b08f9b..0000000 --- a/examples/platform_channel/windows/.clang-format +++ /dev/null
@@ -1,5 +0,0 @@ -BasedOnStyle: Google ---- -Language: Cpp -DerivePointerAlignment: false -PointerAlignment: Left