lbry-sdk/dart/packages/ver/linux/flutter_embedder_example.cc

71 lines
2.3 KiB
C++

// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <linux/limits.h>
#include <unistd.h>
#include <cstdlib>
#include <iostream>
#include <memory>
#include <vector>
#include <flutter/flutter_window_controller.h>
namespace {
// Returns the path of the directory containing this executable, or an empty
// string if the directory cannot be found.
std::string GetExecutableDirectory() {
char buffer[PATH_MAX + 1];
ssize_t length = readlink("/proc/self/exe", buffer, sizeof(buffer));
if (length > PATH_MAX) {
std::cerr << "Couldn't locate executable" << std::endl;
return "";
}
std::string executable_path(buffer, length);
size_t last_separator_position = executable_path.find_last_of('/');
if (last_separator_position == std::string::npos) {
std::cerr << "Unabled to find parent directory of " << executable_path
<< std::endl;
return "";
}
return executable_path.substr(0, last_separator_position);
}
} // namespace
int main(int argc, char **argv) {
// Resources are located relative to the executable.
std::string base_directory = GetExecutableDirectory();
if (base_directory.empty()) {
base_directory = ".";
}
std::string data_directory = base_directory + "/data";
std::string assets_path = data_directory + "/flutter_assets";
std::string icu_data_path = data_directory + "/icudtl.dat";
// Arguments for the Flutter Engine.
std::vector<std::string> arguments;
flutter::FlutterWindowController flutter_controller(icu_data_path);
// Start the engine.
if (!flutter_controller.CreateWindow(800, 1200, "ver - lbry workbench",
assets_path, arguments)) {
return EXIT_FAILURE;
}
// Run until the window is closed.
flutter_controller.RunEventLoop();
return EXIT_SUCCESS;
}