72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
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// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <linux/limits.h>
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#include <unistd.h>
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#include <cstdlib>
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#include <iostream>
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#include <memory>
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#include <vector>
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#include <flutter/flutter_window_controller.h>
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namespace {
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// Returns the path of the directory containing this executable, or an empty
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// string if the directory cannot be found.
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std::string GetExecutableDirectory() {
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char buffer[PATH_MAX + 1];
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ssize_t length = readlink("/proc/self/exe", buffer, sizeof(buffer));
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if (length > PATH_MAX) {
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std::cerr << "Couldn't locate executable" << std::endl;
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return "";
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}
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std::string executable_path(buffer, length);
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size_t last_separator_position = executable_path.find_last_of('/');
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if (last_separator_position == std::string::npos) {
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std::cerr << "Unabled to find parent directory of " << executable_path
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<< std::endl;
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return "";
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}
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return executable_path.substr(0, last_separator_position);
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}
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} // namespace
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int main(int argc, char **argv) {
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// Resources are located relative to the executable.
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std::string base_directory = GetExecutableDirectory();
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if (base_directory.empty()) {
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base_directory = ".";
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}
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std::string data_directory = base_directory + "/data";
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std::string assets_path = data_directory + "/flutter_assets";
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std::string icu_data_path = data_directory + "/icudtl.dat";
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// Arguments for the Flutter Engine.
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std::vector<std::string> arguments;
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flutter::FlutterWindowController flutter_controller(icu_data_path);
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// Start the engine.
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if (!flutter_controller.CreateWindow(800, 600, "Flutter Desktop Example",
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assets_path, arguments)) {
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return EXIT_FAILURE;
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}
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// Run until the window is closed.
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flutter_controller.RunEventLoop();
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return EXIT_SUCCESS;
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}
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