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95c766e9e4
Add decorator variants for decorator components Add the "pipe" operator for components, similar to what was done for Elements. We are able to put something like: ``` Button(...) | Maybe(&show_button) ``` Add decorators for: - `Maybe` - `CatchEvent` - `Renderer` Signed-off-by: Kefu Chai <tchaikov@gmail.com> Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
// Copyright 2020 Arthur Sonzogni. All rights reserved.
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// Use of this source code is governed by the MIT license that can be found in
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// the LICENSE file.
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#include <stddef.h> // for size_t
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#include <algorithm> // for max
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#include <memory> // for allocator, shared_ptr
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#include <string> // for char_traits, operator+, string, basic_string, to_string
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#include <utility> // for move
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#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
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#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
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#include "ftxui/dom/elements.hpp" // for text, vbox, window, Element, Elements
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using namespace ftxui;
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std::string Stringify(Event event) {
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std::string out;
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for (auto& it : event.input())
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out += " " + std::to_string((unsigned int)it);
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out = "(" + out + " ) -> ";
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if (event.is_character()) {
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out += "character(" + event.character() + ")";
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} else if (event.is_mouse()) {
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out += "mouse";
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switch (event.mouse().button) {
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case Mouse::Left:
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out += "_left";
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break;
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case Mouse::Middle:
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out += "_middle";
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break;
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case Mouse::Right:
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out += "_right";
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break;
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case Mouse::None:
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out += "_none";
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break;
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case Mouse::WheelUp:
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out += "_wheel_up";
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break;
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case Mouse::WheelDown:
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out += "_wheel_down";
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break;
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}
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switch (event.mouse().motion) {
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case Mouse::Pressed:
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out += "_pressed";
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break;
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case Mouse::Released:
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out += "_released";
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break;
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}
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if (event.mouse().control)
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out += "_control";
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if (event.mouse().shift)
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out += "_shift";
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if (event.mouse().meta)
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out += "_meta";
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out += "(" + //
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std::to_string(event.mouse().x) + "," +
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std::to_string(event.mouse().y) + ")";
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} else {
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out += "(special)";
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}
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return out;
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}
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int main(int argc, const char* argv[]) {
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auto screen = ScreenInteractive::TerminalOutput();
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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("keys"), vbox(std::move(children)));
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});
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component |= CatchEvent([&](Event event) {
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keys.push_back(event);
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return true;
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});
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screen.Loop(component);
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}
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