examples/component/window.cpp

with_restored_io

// Copyright 2022 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.
#include <cstdlib>   // for system, EXIT_SUCCESS
#include <iostream>  // for operator<<, basic_ostream, basic_ostream::operator<<, cout, endl, flush, ostream, basic_ostream<>::__ostream_type, cin
#include <memory>    // for shared_ptr, __shared_ptr_access, allocator
#include <string>    // for getline, string
 
#include "ftxui/component/captured_mouse.hpp"  // for ftxui
#include "ftxui/component/component.hpp"  // for Button, Horizontal, Renderer
#include "ftxui/component/component_base.hpp"      // for ComponentBase
#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
#include "ftxui/dom/elements.hpp"  // for operator|, filler, Element, borderEmpty, hbox, size, paragraph, vbox, LESS_THAN, border, center, HEIGHT, WIDTH
 
int main() {
  using namespace ftxui;
 
  auto screen = ScreenInteractive::Fullscreen();
 
  // When pressing this button, "screen.WithRestoredIO" will execute the
  // temporarily uninstall the terminal hook and execute the provided callback
  // function. This allow running the application in a non-interactive mode.
  auto btn_run = Button("Execute with restored IO", screen.WithRestoredIO([] {
    std::cout << "This is a child program using stdin/stdout." << std::endl;
    for (int i = 0; i < 10; ++i) {
      std::cout << "Please enter 10 strings (" << i << "/10)" << std::flush;
      std::string input;
      std::getline(std::cin, input);
    }
  }));
 
  auto btn_quit = Button("Quit", screen.ExitLoopClosure());
 
  auto layout = Container::Horizontal({
      btn_run,
      btn_quit,
  });
 
  auto renderer = Renderer(layout, [&] {
    auto explanation = paragraph(
        "After clicking this button, the ScreenInteractive will be "
        "suspended and access to stdin/stdout will temporarilly be "
        "restore for running a function.");
    auto element = vbox({
        explanation | borderEmpty,
        hbox({
            btn_run->Render(),
            filler(),
            btn_quit->Render(),
        }),
    });
 
    element = element | borderEmpty | border | size(WIDTH, LESS_THAN, 80) |
              size(HEIGHT, LESS_THAN, 20) | center;
    return element;
  });
 
  screen.Loop(renderer);
  return EXIT_SUCCESS;
}

// Copyright 2023 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.
#include <ftxui/component/component.hpp>
#include <ftxui/component/screen_interactive.hpp>
 
using namespace ftxui;
 
Component DummyWindowContent() {
  class Impl : public ComponentBase {
   private:
    bool checked[3] = {false, false, false};
    float slider = 50;
 
   public:
    Impl() {
      Add(Container::Vertical({
          Checkbox("Check me", &checked[0]),
          Checkbox("Check me", &checked[1]),
          Checkbox("Check me", &checked[2]),
          Slider("Slider", &slider, 0.f, 100.f),
      }));
    }
  };
  return Make<Impl>();
}
 
int main() {
  int window_1_left = 20;
  int window_1_top = 10;
  int window_1_width = 40;
  int window_1_height = 20;
 
  auto window_1 = Window({
      .inner = DummyWindowContent(),
      .title = "First window",
      .left = &window_1_left,
      .top = &window_1_top,
      .width = &window_1_width,
      .height = &window_1_height,
  });
 
  auto window_2 = Window({
      .inner = DummyWindowContent(),
      .title = "My window",
      .left = 40,
      .top = 20,
  });
 
  auto window_3 = Window({
      .inner = DummyWindowContent(),
      .title = "My window",
      .left = 60,
      .top = 30,
  });
 
  auto window_4 = Window({
      .inner = DummyWindowContent(),
  });
 
  auto window_5 = Window({});
 
  auto window_container = Container::Stacked({
      window_1,
      window_2,
      window_3,
      window_4,
      window_5,
  });
 
  auto display_win_1 = Renderer([&] {
    return text("window_1: " +  //
                std::to_string(window_1_width) + "x" +
                std::to_string(window_1_height) + " + " +
                std::to_string(window_1_left) + "," +
                std::to_string(window_1_top));
  });
 
  auto layout = Container::Vertical({
      display_win_1,
      window_container,
  });
 
  auto screen = ScreenInteractive::Fullscreen();
  screen.Loop(layout);
 
  return EXIT_SUCCESS;
}