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Introduce Loop. (#476)

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It can be used to give developers a better control on the loop. Users
can use it not to take full control of the thread, and poll FTXUI from
time to time as part of an external loop.

This resolves: https://github.com/ArthurSonzogni/FTXUI/issues/474
This commit is contained in:
Arthur Sonzogni
2022-10-18 21:29:27 +02:00
committed by GitHub
parent 26d63bc56f
commit 0acfd8f255
9 changed files with 273 additions and 79 deletions
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21
include/ftxui/component/screen_interactive.hpp
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@@ -12,11 +12,12 @@
#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 Closure, Task
#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>;
@@ -33,9 +34,12 @@ class ScreenInteractive : public Screen {
// 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();
@@ -51,9 +55,16 @@ class ScreenInteractive : public Screen {
void Install();
void Uninstall();
void Main(Component component);
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 SigStop();
ScreenInteractive* suspended_screen_ = nullptr;
@@ -80,7 +91,7 @@ class ScreenInteractive : public Screen {
std::thread event_listener_;
std::thread animation_listener_;
bool animation_requested_ = false;
animation::TimePoint previous_animation_time;
animation::TimePoint previous_animation_time_;
int cursor_x_ = 1;
int cursor_y_ = 1;
@@ -88,6 +99,10 @@ class ScreenInteractive : public Screen {
bool mouse_captured = false;
bool previous_frame_resized_ = false;
bool frame_valid_ = false;
friend class Loop;
public:
class Private {
public: