git.cworth.org Git - lmno.games/blob - flutterempires/linux/main.cc

   1 #include <flutter/flutter_window_controller.h>
   2 #include <linux/limits.h>
   3 #include <unistd.h>
   4
   5 #include <cstdlib>
   6 #include <iostream>
   7 #include <memory>
   8 #include <vector>
   9
  10 #include "flutter/generated_plugin_registrant.h"
  11 #include "window_configuration.h"
  12
  13 namespace {
  14
  15 // Returns the path of the directory containing this executable, or an empty
  16 // string if the directory cannot be found.
  17 std::string GetExecutableDirectory() {
  18   char buffer[PATH_MAX + 1];
  19   ssize_t length = readlink("/proc/self/exe", buffer, sizeof(buffer));
  20   if (length > PATH_MAX) {
  21     std::cerr << "Couldn't locate executable" << std::endl;
  22     return "";
  23   }
  24   std::string executable_path(buffer, length);
  25   size_t last_separator_position = executable_path.find_last_of('/');
  26   if (last_separator_position == std::string::npos) {
  27     std::cerr << "Unabled to find parent directory of " << executable_path
  28               << std::endl;
  29     return "";
  30   }
  31   return executable_path.substr(0, last_separator_position);
  32 }
  33
  34 }  // namespace
  35
  36 int main(int argc, char **argv) {
  37   // Resources are located relative to the executable.
  38   std::string base_directory = GetExecutableDirectory();
  39   if (base_directory.empty()) {
  40     base_directory = ".";
  41   }
  42   std::string data_directory = base_directory + "/data";
  43   std::string assets_path = data_directory + "/flutter_assets";
  44   std::string icu_data_path = data_directory + "/icudtl.dat";
  45
  46   // Arguments for the Flutter Engine.
  47   std::vector<std::string> arguments;
  48
  49   flutter::FlutterWindowController flutter_controller(icu_data_path);
  50   flutter::WindowProperties window_properties = {};
  51   window_properties.title = kFlutterWindowTitle;
  52   window_properties.width = kFlutterWindowWidth;
  53   window_properties.height = kFlutterWindowHeight;
  54
  55   // Start the engine.
  56   if (!flutter_controller.CreateWindow(window_properties, assets_path,
  57                                        arguments)) {
  58     return EXIT_FAILURE;
  59   }
  60   RegisterPlugins(&flutter_controller);
  61
  62   // Run until the window is closed.
  63   while (flutter_controller.RunEventLoopWithTimeout(
  64       std::chrono::milliseconds::max())) {
  65   }
  66   return EXIT_SUCCESS;
  67 }