Initialize

ftxui/examples/component/print_key_press.cpp

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+// 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.
+
+#include <stddef.h>   // for size_t
+#include <algorithm>  // for max
+#include <memory>     // for allocator, shared_ptr
+#include <string>  // for char_traits, operator+, string, basic_string, to_string
+#include <utility>  // for move
+#include <vector>   // for vector
+
+#include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"       // for CatchEvent, Renderer
+#include "ftxui/component/event.hpp"           // for Event
+#include "ftxui/component/mouse.hpp"  // for Mouse, Mouse::Left, Mouse::Middle, Mouse::None, Mouse::Pressed, Mouse::Released, Mouse::Right, Mouse::WheelDown, Mouse::WheelUp
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+#include "ftxui/dom/elements.hpp"  // for text, vbox, window, Element, Elements
+
+using namespace ftxui;
+
+std::string Code(Event event) {
+  std::string codes;
+  for (auto& it : event.input()) {
+    codes += " " + std::to_string((unsigned int)it);
+  }
+  return codes;
+}
+
+int main() {
+  auto screen = ScreenInteractive::TerminalOutput();
+
+  std::vector<Event> keys;
+
+  auto left_column = Renderer([&] {
+    Elements children = {
+        text("Codes"),
+        separator(),
+    };
+    for (size_t i = std::max(0, (int)keys.size() - 20); i < keys.size(); ++i) {
+      children.push_back(text(Code(keys[i])));
+    }
+    return vbox(children);
+  });
+
+  auto right_column = Renderer([&] {
+    Elements children = {
+        text("Event"),
+        separator(),
+    };
+    for (size_t i = std::max(0, (int)keys.size() - 20); i < keys.size(); ++i) {
+      children.push_back(text(keys[i].DebugString()));
+    }
+    return vbox(children);
+  });
+
+  int split_size = 40;
+  auto component = ResizableSplitLeft(left_column, right_column, &split_size);
+  component |= border;
+
+  component |= CatchEvent([&](Event event) {
+    keys.push_back(event);
+    return false;
+  });
+
+  screen.Loop(component);
+}