Unverified Commit 8ee019d5 authored by Robert Ancell's avatar Robert Ancell Committed by GitHub

Add Linux implementation of the platform view example (#123731)

parent 3163306d
...@@ -57,8 +57,9 @@ class _MyHomePageState extends State<MyHomePage> { ...@@ -57,8 +57,9 @@ class _MyHomePageState extends State<MyHomePage> {
return const Text('Continue in Windows view'); return const Text('Continue in Windows view');
case TargetPlatform.macOS: case TargetPlatform.macOS:
return const Text('Continue in macOS view'); return const Text('Continue in macOS view');
case TargetPlatform.fuchsia:
case TargetPlatform.linux: case TargetPlatform.linux:
return const Text('Continue in Linux view');
case TargetPlatform.fuchsia:
throw UnimplementedError('Platform not yet implemented'); throw UnimplementedError('Platform not yet implemented');
} }
} }
......
# Project-level configuration.
cmake_minimum_required(VERSION 3.10)
project(runner LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 17)
# The name of the executable created for the application. Change this to change
# the on-disk name of your application.
set(BINARY_NAME "platform_view")
# The unique GTK application identifier for this application. See:
# https://wiki.gnome.org/HowDoI/ChooseApplicationID
set(APPLICATION_ID "io.flutter.examples.platform_view")
# 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(${FLUTTER_MANAGED_DIR})
# System-level dependencies.
find_package(PkgConfig REQUIRED)
pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
add_definitions(-DAPPLICATION_ID="${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()
# 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}
)
// 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"
int main(int argc, char** argv) {
g_autoptr(MyApplication) app = my_application_new();
return g_application_run(G_APPLICATION(app), argc, argv);
}
// 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>
#ifdef GDK_WINDOWING_X11
#include <gdk/gdkx.h>
#endif
#include "flutter/generated_plugin_registrant.h"
struct _MyApplication {
GtkApplication parent_instance;
// Channel to receive platform view requests from Flutter.
FlMethodChannel* platform_view_channel;
// Main window.
GtkWindow* window;
// Current counter.
int64_t counter;
// Request in progress.
FlMethodCall* method_call;
// Native window requested by Flutter.
GtkWindow* native_window;
// Label to show count.
GtkLabel* counter_label;
};
G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
static void update_counter_label(MyApplication* self) {
g_autofree gchar* text =
g_strdup_printf("Button tapped %" G_GINT64_FORMAT " %s.", self->counter,
self->counter == 1 ? "time" : "times");
gtk_label_set_text(self->counter_label, text);
}
static void button_clicked_cb(MyApplication* self) {
self->counter++;
update_counter_label(self);
}
static void native_window_delete_event_cb(MyApplication* self,
gint response_id) {
g_autoptr(FlValue) counter_value = fl_value_new_int(self->counter);
fl_method_call_respond_success(self->method_call, counter_value, nullptr);
g_clear_object(&self->method_call);
}
// Handle request to switch the view.
static void handle_switch_view(MyApplication* self, FlMethodCall* method_call) {
FlValue* counter_value = fl_method_call_get_args(method_call);
if (fl_value_get_type(counter_value) != FL_VALUE_TYPE_INT) {
fl_method_call_respond_error(self->method_call, "Invalid args",
"Invalid switchView args", nullptr, nullptr);
return;
}
self->counter = fl_value_get_int(counter_value);
self->method_call = FL_METHOD_CALL(g_object_ref(method_call));
// Show the same UI in a native window.
self->native_window = GTK_WINDOW(gtk_window_new(GTK_WINDOW_TOPLEVEL));
gtk_window_set_transient_for(self->native_window, self->window);
gtk_window_set_modal(self->native_window, TRUE);
gtk_window_set_destroy_with_parent(self->native_window, TRUE);
g_signal_connect_swapped(self->native_window, "delete-event",
G_CALLBACK(native_window_delete_event_cb), self);
GtkWidget* box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
gtk_widget_set_margin_start(box, 24);
gtk_widget_set_margin_end(box, 24);
gtk_widget_set_margin_top(box, 24);
gtk_widget_set_margin_bottom(box, 24);
gtk_widget_show(box);
gtk_container_add(GTK_CONTAINER(self->native_window), box);
self->counter_label = GTK_LABEL(gtk_label_new(""));
gtk_widget_show(GTK_WIDGET(self->counter_label));
gtk_container_add(GTK_CONTAINER(box), GTK_WIDGET(self->counter_label));
GtkWidget* button = gtk_button_new_with_label("+");
gtk_style_context_add_class(gtk_widget_get_style_context(GTK_WIDGET(button)),
"circular");
gtk_widget_set_halign(button, GTK_ALIGN_CENTER);
gtk_widget_show(button);
gtk_container_add(GTK_CONTAINER(box), button);
g_signal_connect_swapped(button, "clicked", G_CALLBACK(button_clicked_cb),
self);
update_counter_label(self);
gtk_window_present(self->native_window);
}
// Handle platform view requests from Flutter.
static void platform_view_channel_method_cb(FlMethodChannel* channel,
FlMethodCall* method_call,
gpointer user_data) {
MyApplication* self = MY_APPLICATION(user_data);
const char* name = fl_method_call_get_name(method_call);
if (g_str_equal(name, "switchView")) {
handle_switch_view(self, method_call);
} else {
fl_method_call_respond_not_implemented(method_call, nullptr);
}
}
// Implements GObject::dispose.
static void my_application_dispose(GObject* object) {
MyApplication* self = MY_APPLICATION(object);
g_clear_object(&self->platform_view_channel);
G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
}
// Implements GApplication::activate.
static void my_application_activate(GApplication* application) {
MyApplication* self = MY_APPLICATION(application);
self->window =
GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
gtk_window_set_default_size(self->window, 1280, 720);
gtk_widget_show(GTK_WIDGET(self->window));
g_autoptr(FlDartProject) project = fl_dart_project_new();
FlView* view = fl_view_new(project);
gtk_widget_show(GTK_WIDGET(view));
gtk_container_add(GTK_CONTAINER(self->window), GTK_WIDGET(view));
// Create channel to handle platform view requests from Flutter.
FlEngine* engine = fl_view_get_engine(view);
g_autoptr(FlStandardMethodCodec) codec = fl_standard_method_codec_new();
self->platform_view_channel = fl_method_channel_new(
fl_engine_get_binary_messenger(engine),
"samples.flutter.io/platform_view", FL_METHOD_CODEC(codec));
fl_method_channel_set_method_call_handler(self->platform_view_channel,
platform_view_channel_method_cb,
self, nullptr);
fl_register_plugins(FL_PLUGIN_REGISTRY(view));
gtk_widget_grab_focus(GTK_WIDGET(view));
}
static void my_application_class_init(MyApplicationClass* klass) {
G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
G_APPLICATION_CLASS(klass)->activate = my_application_activate;
}
static void my_application_init(MyApplication* self) {}
MyApplication* my_application_new() {
return MY_APPLICATION(g_object_new(my_application_get_type(),
"application-id", APPLICATION_ID, "flags",
G_APPLICATION_NON_UNIQUE, nullptr));
}
// 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_
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