FTXUI/examples/util/print_key_press.cpp

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// 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.
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#include <stddef.h> // for size_t
#include <algorithm> // for max
#include <memory> // for shared_ptr
#include <string> // for allocator, char_traits, operator+, wstring, basic_string, to_wstring, string
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#include <utility> // for move
#include <vector> // for vector
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#include "ftxui/component/captured_mouse.hpp" // for ftxui
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#include "ftxui/component/component.hpp" // for CatchEvent, Renderer
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#include "ftxui/component/event.hpp" // for Event
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Middle, Mouse::None, Mouse::Pressed, Mouse::Released, Mouse::Right, Mouse::WheelDown, Mouse::WheelUp
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#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/dom/elements.hpp" // for text, vbox, window, Element, Elements
using namespace ftxui;
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std::wstring Stringify(Event event) {
std::wstring out;
for (auto& it : event.input())
out += L" " + std::to_wstring((unsigned int)it);
out = L"(" + out + L" ) -> ";
if (event.is_character()) {
out += std::wstring(L"character(") + event.character() + L")";
} else if (event.is_mouse()) {
out += L"mouse";
switch (event.mouse().button) {
case Mouse::Left:
out += L"_left";
break;
case Mouse::Middle:
out += L"_middle";
break;
case Mouse::Right:
out += L"_right";
break;
case Mouse::None:
out += L"_none";
break;
case Mouse::WheelUp:
out += L"_wheel_up";
break;
case Mouse::WheelDown:
out += L"_wheel_down";
break;
}
switch (event.mouse().motion) {
case Mouse::Pressed:
out += L"_pressed";
break;
case Mouse::Released:
out += L"_released";
break;
}
if (event.mouse().control)
out += L"_control";
if (event.mouse().shift)
out += L"_shift";
if (event.mouse().meta)
out += L"_meta";
out += L"(" + //
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std::to_wstring(event.mouse().x) + L"," +
std::to_wstring(event.mouse().y) + L")";
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} else {
out += L"(special)";
}
return out;
}
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int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::TerminalOutput();
std::vector<Event> keys;
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auto component = Renderer([&] {
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Elements children;
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for (size_t i = std::max(0, (int)keys.size() - 20); i < keys.size(); ++i)
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children.push_back(text(Stringify(keys[i])));
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return window(text(L"keys"), vbox(std::move(children)));
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});
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component = CatchEvent(component, [&](Event event) {
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keys.push_back(event);
return true;
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});
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screen.Loop(component);
}