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examples/component/custom_loop.cpp
// 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 <stdlib.h> // for EXIT_SUCCESS
#include <chrono> // for milliseconds
#include <ftxui/component/event.hpp> // for Event
#include <ftxui/component/mouse.hpp> // for ftxui
#include <ftxui/dom/elements.hpp> // for text, separator, Element, operator|, vbox, border
#include <memory> // for allocator, shared_ptr
#include <string> // for operator+, to_string
#include <thread> // for sleep_for
#include "ftxui/component/component.hpp" // for CatchEvent, Renderer, operator|=
#include "ftxui/component/loop.hpp" // for Loop
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
int main() {
using namespace ftxui;
auto screen = ScreenInteractive::FitComponent();
// Create a component counting the number of frames drawn and event handled.
int custom_loop_count = 0;
int frame_count = 0;
int event_count = 0;
auto component = Renderer([&] {
frame_count++;
return vbox({
text("This demonstrates using a custom ftxui::Loop. It "),
text("runs at 100 iterations per seconds. The FTXUI events "),
text("are all processed once per iteration and a new frame "),
text("is rendered as needed"),
separator(),
text("ftxui event count: " + std::to_string(event_count)),
text("ftxui frame count: " + std::to_string(frame_count)),
text("Custom loop count: " + std::to_string(custom_loop_count)),
}) |
border;
});
component |= CatchEvent([&](Event) -> bool {
event_count++;
return false;
});
Loop loop(&screen, component);
while (!loop.HasQuitted()) {
custom_loop_count++;
loop.RunOnce();
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
return EXIT_SUCCESS;
}
ftxui::Loop
Definition loop.hpp:17
ftxui::ScreenInteractive::FitComponent
static ScreenInteractive FitComponent()
Definition screen_interactive.cpp:416
component.hpp
elements.hpp
event.hpp
loop.hpp
mouse.hpp
ftxui
Definition animation.hpp:10
ftxui::Renderer
Component Renderer(Component child, std::function< Element()>)
Return a new Component, similar to |child|, but using |render| as the Component::Render() event.
Definition renderer.cpp:61
ftxui::text
Element text(std::wstring text)
Display a piece of unicode text.
Definition text.cpp:160
ftxui::separator
Element separator()
Draw a vertical or horizontal separation in between two other elements.
Definition separator.cpp:134
ftxui::border
Element border(Element)
Draw a border around the element.
Definition border.cpp:227
ftxui::CatchEvent
Component CatchEvent(Component child, std::function< bool(Event)>)
ftxui::vbox
Element vbox(Elements)
A container displaying elements vertically one by one.
Definition vbox.cpp:96
screen_interactive.hpp
ftxui::Event
Represent an event. It can be key press event, a terminal resize, or more ...
Definition event.hpp:27