FTXUI/examples/print_key_press.cpp

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#include <chrono>
#include <iostream>
#include <thread>
#include "ftxui/component/component.hpp"
#include "ftxui/component/screen_interactive.hpp"
#include "ftxui/util/string.hpp"
using namespace ftxui;
class DrawKey : public Component {
public:
DrawKey(Component::Delegate* delegate)
: Component(delegate) {}
Element Render() override {
Children children;
for (size_t i = std::max(0, (int)keys.size() - 10); i < keys.size(); ++i) {
std::string code = "";
for (size_t j = 0; j < 5; ++j)
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code += " " + std::to_string(keys[i].values[j]);
try {
std::string line = code + " -> " + std::to_string(keys[i].values[0]) +
" (" + char(keys[i].values[0]) + ")";
children.push_back(text(to_wstring(line)));
} catch (...) {
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std::string line =
code + " -> " + std::to_string(keys[i].values[0]) + " (undefined)";
children.push_back(text(to_wstring(line)));
}
}
return vbox(std::move(children));
}
bool OnEvent(Event event) override {
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keys.push_back(event);
return true;
}
private:
std::vector<Event> keys;
};
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::FixedSize(80, 10);
DrawKey draw_key(screen.delegate());
screen.Loop();
}