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examples/dom/graph.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 <chrono> // for operator""s, chrono_literals
#include <cmath> // for sin
#include <ftxui/dom/elements.hpp> // for graph, operator|, separator, color, Element, vbox, flex, inverted, operator|=, Fit, hbox, size, border, GREATER_THAN, HEIGHT
#include <ftxui/screen/screen.hpp> // for Full, Screen
#include <functional> // for ref, reference_wrapper
#include <iostream> // for cout, ostream
#include <memory> // for shared_ptr
#include <string> // for operator<<, string
#include <thread> // for sleep_for
#include <utility> // for ignore
#include <vector> // for vector
#include "ftxui/dom/node.hpp" // for Render
#include "ftxui/screen/color.hpp" // for Color, Color::BlueLight, Color::RedLight, Color::YellowLight, ftxui
class Graph {
public:
std::vector<int> operator()(int width, int height) const {
std::vector<int> output(width);
for (int i = 0; i < width; ++i) {
float v = 0;
v += 0.1f * sin((i + shift) * 0.1f); // NOLINT
v += 0.2f * sin((i + shift + 10) * 0.15f); // NOLINT
v += 0.1f * sin((i + shift) * 0.03f); // NOLINT
v *= height; // NOLINT
v += 0.5f * height; // NOLINT
output[i] = static_cast<int>(v);
}
return output;
}
int shift = 0;
};
std::vector<int> triangle(int width, int height) {
std::vector<int> output(width);
for (int i = 0; i < width; ++i) {
output[i] = i % (height - 4) + 2;
}
return output;
}
int main() {
using namespace ftxui;
using namespace std::chrono_literals;
Graph my_graph;
std::string reset_position;
for (int i = 0;; ++i) {
std::ignore = i;
auto document = hbox({
vbox({
graph(std::ref(my_graph)),
separator(),
graph(triangle) | inverted,
}) | flex,
separator(),
vbox({
graph(std::ref(my_graph)) | color(Color::BlueLight),
separator(),
graph(std::ref(my_graph)) | color(Color::RedLight),
separator(),
graph(std::ref(my_graph)) | color(Color::YellowLight),
}) | flex,
});
document |= border;
const int min_width = 40;
document |= size(HEIGHT, GREATER_THAN, min_width);
auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
Render(screen, document);
std::cout << reset_position;
screen.Print();
reset_position = screen.ResetPosition();
const auto sleep_time = 0.03s;
std::this_thread::sleep_for(sleep_time);
my_graph.shift++;
}
return 0;
}
color.hpp
elements.hpp
ftxui
Definition animation.hpp:10
ftxui::size
Decorator size(WidthOrHeight, Constraint, int value)
Apply a constraint on the size of an element.
Definition size.cpp:89
ftxui::hbox
Element hbox(Elements)
A container displaying elements horizontally one by one.
Definition hbox.cpp:94
ftxui::inverted
Element inverted(Element)
Add a filter that will invert the foreground and the background colors.
Definition inverted.cpp:34
ftxui::separator
Element separator()
Draw a vertical or horizontal separation in between two other elements.
Definition separator.cpp:134
ftxui::Render
void Render(Screen &screen, const Element &element)
Display an element on a ftxui::Screen.
Definition node.cpp:88
ftxui::graph
Element graph(GraphFunction)
Draw a graph using a GraphFunction.
Definition graph.cpp:71
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
ftxui::vbox
Element vbox(Elements)
A container displaying elements vertically one by one.
Definition vbox.cpp:96
node.hpp
screen.hpp