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examples/component/renderer.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 <memory> // for shared_ptr, allocator, __shared_ptr_access
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Renderer, Button, Vertical
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/dom/elements.hpp" // for operator|, Element, text, bold, border, center, color
#include "ftxui/screen/color.hpp" // for Color, Color::Red
int main() {
using namespace ftxui;
auto screen = ScreenInteractive::FitComponent();
// A Renderer() is a component using a lambda function as a parameter to
// render itself.
// 1. Example of focusable renderer:
auto renderer_focusable = Renderer([](bool focused) {
if (focused)
return text("FOCUSABLE RENDERER()") | center | bold | border;
else
return text(" Focusable renderer() ") | center | border;
});
// 2. Examples of a non focusable renderer.
auto renderer_non_focusable = Renderer([&] {
return text("~~~~~ Non Focusable renderer() ~~~~~"); //
});
// 3. Renderer can wrap other components to redefine their Render() function.
auto button = Button("Wrapped quit button", screen.ExitLoopClosure());
auto renderer_wrap = Renderer(button, [&] {
if (button->Focused())
return button->Render() | bold | color(Color::Red);
else
return button->Render();
});
// Let's renderer everyone:
screen.Loop(Container::Vertical({
renderer_focusable,
renderer_non_focusable,
renderer_wrap,
}));
}
captured_mouse.hpp
ftxui::Color::Red
@ Red
Definition color.hpp:53
ftxui::ScreenInteractive::FitComponent
static ScreenInteractive FitComponent()
Definition screen_interactive.cpp:416
color.hpp
component.hpp
component_base.hpp
elements.hpp
ftxui::Container::Vertical
Component Vertical(Components children)
A list of components, drawn one by one vertically and navigated vertically using up/down arrow key or...
Definition container.cpp:317
ftxui
Definition animation.hpp:10
ftxui::bold
Element bold(Element)
Use a bold font, for elements with more emphasis.
Definition bold.cpp:33
ftxui::Button
Component Button(ButtonOption options)
Draw a button. Execute a function when clicked.
Definition button.cpp:176
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::center
Element center(Element)
Center an element horizontally and vertically.
Definition composite_decorator.cpp:31
ftxui::text
Element text(std::wstring text)
Display a piece of unicode text.
Definition text.cpp:160
ftxui::border
Element border(Element)
Draw a border around the element.
Definition border.cpp:227
ftxui::color
Decorator color(Color)
Decorate using a foreground color.
Definition color.cpp:110
screen_interactive.hpp