FTXUI/include/ftxui/component/screen_interactive.hpp
mr-mocap f21ca3aa14
Improve UNIX signal handling (#518)
There was a dead lock caused by the reentrancy of the post method.

Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
2022-12-01 22:56:35 +01:00

124 lines
3.3 KiB
C++

#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
namespace ftxui {
class ComponentBase;
class Loop;
struct Event;
using Component = std::shared_ptr<ComponentBase>;
class ScreenInteractivePrivate;
class ScreenInteractive : public Screen {
public:
// Constructors:
static ScreenInteractive FixedSize(int dimx, int dimy);
static ScreenInteractive Fullscreen();
static ScreenInteractive FitComponent();
static ScreenInteractive TerminalOutput();
// Return the currently active screen, nullptr if none.
static ScreenInteractive* Active();
// Start/Stop the main loop.
void Loop(Component);
void Exit();
Closure ExitLoopClosure();
// Post tasks to be executed by the loop.
void Post(Task task);
void PostEvent(Event event);
void RequestAnimationFrame();
CapturedMouse CaptureMouse();
// Decorate a function. The outputted one will execute similarly to the
// inputted one, but with the currently active screen terminal hooks
// temporarily uninstalled.
Closure WithRestoredIO(Closure);
private:
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();
void Signal(int signal);
ScreenInteractive* suspended_screen_ = nullptr;
enum class Dimension {
FitComponent,
Fixed,
Fullscreen,
TerminalOutput,
};
Dimension dimension_ = Dimension::Fixed;
bool use_alternative_screen_ = false;
ScreenInteractive(int dimx,
int dimy,
Dimension dimension,
bool use_alternative_screen);
Sender<Task> task_sender_;
Receiver<Task> task_receiver_;
std::string set_cursor_position;
std::string reset_cursor_position;
std::atomic<bool> quit_ = false;
std::thread event_listener_;
std::thread animation_listener_;
bool animation_requested_ = false;
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;
friend class Loop;
public:
class Private {
public:
static void Signal(ScreenInteractive& s, int signal) { s.Signal(signal); }
};
friend Private;
};
} // namespace ftxui
#endif /* end of include guard: FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP */
// 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.