examples/component/selection.cpp

// 版权所有 2020 Arthur Sonzogni。保留所有权利。
// 本源代码受 MIT 许可证的约束，您可以在 LICENSE 文件中找到该许可证。
#include <string>  // for char_traits, operator+, string, basic_string
 
#include "ftxui/component/component.hpp"       // for Input, Renderer, Vertical
#include "ftxui/component/component_base.hpp"  // for ComponentBase
#include "ftxui/component/component_options.hpp"  // for InputOption
#include "ftxui/component/screen_interactive.hpp"  // for Component, ScreenInteractive
#include "ftxui/dom/elements.hpp"  // for text, hbox, separator, Element, operator|, vbox, border
#include "ftxui/util/ref.hpp"  // for Ref
 
using namespace ftxui;
 
Element LoremIpsum() {
  return vbox({
      text("FTXUI：一个用于构建用户界面的强大库。"),
      text("享受丰富的组件集和声明式风格。"),
      text("以最小的努力创建美观且响应迅速的 UI。"),
      text("加入社区，体验 FTXUI 的强大功能。"),
  });
}
 
int main() {
  auto screen = ScreenInteractive::TerminalOutput();
 
  auto quit =
      Button("退出", screen.ExitLoopClosure(), ButtonOption::Animated());
 
  int selection_change_counter = 0;
  std::string selection_content = "";
  screen.SelectionChange([&] {
    selection_change_counter++;
    selection_content = screen.GetSelection();
  });
 
  // 组件：
  auto renderer = Renderer(quit, [&] {
    return vbox({
        text("选择已更改：" + std::to_string(selection_change_counter) +
             " 次"),
        text("当前选中："),
        paragraph(selection_content) | vscroll_indicator | frame | border |
            size(HEIGHT, EQUAL, 10),
        window(text("水平分割"), hbox({
                                             LoremIpsum(),
                                             separator(),
                                             LoremIpsum(),
                                             separator(),
                                             LoremIpsum(),
                                         })),
        window(text("垂直分割"), vbox({
                                           LoremIpsum(),
                                           separator(),
                                           LoremIpsum(),
                                           separator(),
                                           LoremIpsum(),
                                       })),
        window(text("具有不同样式的网格分割"),
               vbox({
                   hbox({
                       LoremIpsum(),
                       separator(),
                       LoremIpsum()                                   //
                           | selectionBackgroundColor(Color::Yellow)  //
                           | selectionColor(Color::Black)             //
                           | selectionStyleReset,
                       separator(),
                       LoremIpsum() | selectionColor(Color::Blue),
                   }),
                   separator(),
                   hbox({
                       LoremIpsum() | selectionColor(Color::Red),
                       separator(),
                       LoremIpsum() | selectionStyle([](Pixel& pixel) {
                         pixel.underlined_double = true;
                       }),
                       separator(),
                       LoremIpsum(),
                   }),
               })),
        quit->Render(),
    });
  });
 
  screen.Loop(renderer);
}