Barely working stripped down version of ScreenInteractive. Now to bring on the SFML events.

sfml_screen.hpp

@@ -0,0 +1,113 @@
+// 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.
+#ifndef FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
+#define FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
+
+#include <atomic>                        // for atomic
+#include <ftxui/component/receiver.hpp>  // for Receiver, Sender
+#include <functional>                    // for function
+#include <memory>                        // for shared_ptr
+#include <string>                        // for string
+#include <thread>                        // for thread
+#include <variant>                       // for variant
+
+#include <ftxui/component/animation.hpp>       // for TimePoint
+#include <ftxui/component/captured_mouse.hpp>  // for CapturedMouse
+#include <ftxui/component/event.hpp>           // for Event
+#include <ftxui/component/task.hpp>            // for Task, Closure
+#include <ftxui/screen/screen.hpp>             // for Screen
+
+using ftxui::Component, ftxui::Task, ftxui::Closure, ftxui::Event, ftxui::Sender, ftxui::Receiver;
+
+namespace ftxui {
+  class ComponentBase;
+  struct Event;
+
+  using Component = std::shared_ptr<ComponentBase>;
+  class SFMLScreenPrivate;
+}
+
+class SFMLScreen : public ftxui::Screen {
+ public:
+  // Constructors:
+  static SFMLScreen FixedSize(int dimx, int dimy);
+  static SFMLScreen Fullscreen();
+  static SFMLScreen FitComponent();
+  static SFMLScreen TerminalOutput();
+
+  // Options. Must be called before Loop().
+  void TrackMouse(bool enable = true);
+
+  // Return the currently active screen, nullptr if none.
+  static SFMLScreen* Active();
+
+  // Start/Stop the main loop.
+  void Exit();
+  Closure ExitLoopClosure();
+
+  // Post tasks to be executed by the loop.
+  void Post(Task task);
+  void PostEvent(Event event);
+  void RequestAnimationFrame();
+
+  // Decorate a function. The outputted one will execute similarly to the
+  // inputted one, but with the currently active screen terminal hooks
+  // temporarily uninstalled.
+  ftxui::Closure WithRestoredIO(ftxui::Closure);
+
+  void ExitNow();
+
+  void Install();
+  void Uninstall();
+
+  void PreMain();
+  void PostMain();
+
+  bool HasQuitted();
+  void RunOnce(Component component);
+  void RunOnceBlocking(Component component);
+
+  void HandleTask(Component component, Task& task);
+  void Draw(Component component);
+  void ResetCursorPosition();
+
+  SFMLScreen* suspended_screen_ = nullptr;
+  enum class Dimension {
+    FitComponent,
+    Fixed,
+    Fullscreen,
+    TerminalOutput,
+  };
+  Dimension dimension_ = Dimension::Fixed;
+  bool use_alternative_screen_ = false;
+
+  SFMLScreen(int dimx,
+                    int dimy,
+                    Dimension dimension,
+                    bool use_alternative_screen);
+
+  bool track_mouse_ = true;
+
+  Sender<Task> task_sender_;
+  Receiver<Task> task_receiver_;
+
+  std::string set_cursor_position;
+  std::string reset_cursor_position;
+
+  std::thread event_listener_;
+  std::thread animation_listener_;
+  bool animation_requested_ = false;
+  ftxui::animation::TimePoint previous_animation_time_;
+
+  int cursor_x_ = 1;
+  int cursor_y_ = 1;
+
+  bool mouse_captured = false;
+  bool previous_frame_resized_ = false;
+
+  bool frame_valid_ = false;
+};
+
+
+#endif /* end of include guard: FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP */