FTXUI/src/ftxui/screen/terminal.cpp

#include "ftxui/screen/terminal.hpp"

#include <stdio.h>

#include <cstdlib>

#if defined(_WIN32)
#define WIN32_LEAN_AND_MEAN
#define NOMINMAX
#include <Windows.h>
#else
#include <sys/ioctl.h>
#include <unistd.h>
#endif

#include <iostream>

namespace ftxui {

Terminal::Dimensions Terminal::Size() {
#if defined(__EMSCRIPTEN__)
  return Dimensions{80, 43};
#elif defined(_WIN32)
  CONSOLE_SCREEN_BUFFER_INFO csbi;
  int columns, rows;

  GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
  columns = csbi.srWindow.Right - csbi.srWindow.Left + 1;
  rows = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
  return Dimensions{columns, rows};
#else
  winsize w;
  ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
  return Dimensions{w.ws_col, w.ws_row};
#endif
}

bool Terminal::CanSupportTrueColors() {
  char *COLORTERM_RAW = std::getenv("COLORTERM");
  if (nullptr == COLORTERM_RAW) {
    return false;
  }
  std::string COLORTERM = COLORTERM_RAW;
  return COLORTERM.compare("24bit") || COLORTERM.compare("trueColor");
}

}  // namespace ftxui

// Copyright 2020 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.