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examples/dom/canvas.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 <stdio.h> // for getchar
#include <cmath> // for cos
#include <ftxui/dom/elements.hpp> // for Fit, canvas, operator|, border, Element
#include <ftxui/screen/screen.hpp> // for Pixel, Screen
#include <vector> // for vector, allocator
#include "ftxui/dom/canvas.hpp" // for Canvas
#include "ftxui/dom/node.hpp" // for Render
#include "ftxui/screen/color.hpp" // for Color, Color::Red, Color::Blue, Color::Green, ftxui
int main() {
using namespace ftxui;
auto c = Canvas(100, 100);
c.DrawText(0, 0, "This is a canvas", [](Pixel& p) {
p.foreground_color = Color::Red;
p.underlined = true;
});
// Triangle:
c.DrawPointLine(10, 10, 80, 10, Color::Red);
c.DrawPointLine(80, 10, 80, 40, Color::Blue);
c.DrawPointLine(80, 40, 10, 10, Color::Green);
// Circle, not filled and filled:
c.DrawPointCircle(30, 50, 20);
c.DrawPointCircleFilled(40, 40, 10);
// Plot a function:
std::vector<int> ys(100);
for (int x = 0; x < 100; x++)
ys[x] = int(80 + 20 * cos(x * 0.2));
for (int x = 0; x < 99; x++)
c.DrawPointLine(x, ys[x], x + 1, ys[x + 1], Color::Red);
auto document = canvas(&c) | border;
auto screen = Screen::Create(Dimension::Fit(document));
Render(screen, document);
screen.Print();
getchar();
return 0;
}
canvas.hpp
ftxui::Color::Green
@ Green
Definition color.hpp:54
ftxui::Color::Red
@ Red
Definition color.hpp:53
ftxui::Color::Blue
@ Blue
Definition color.hpp:56
ftxui::Screen::Create
static Screen Create(Dimensions dimension)
Create a screen with the given dimension.
Definition screen.cpp:394
color.hpp
elements.hpp
ftxui::Dimension::Fit
Dimensions Fit(Element &, bool extend_beyond_screen=false)
Definition util.cpp:93
ftxui
Definition animation.hpp:10
ftxui::canvas
Element canvas(ConstRef< Canvas >)
Produce an element from a Canvas, or a reference to a Canvas.
Definition canvas.cpp:891
ftxui::Render
void Render(Screen &screen, const Element &element)
Display an element on a ftxui::Screen.
Definition node.cpp:88
ftxui::border
Element border(Element)
Draw a border around the element.
Definition border.cpp:227
node.hpp
screen.hpp
ftxui::Canvas
Definition canvas.hpp:23
ftxui::Pixel
A Unicode character and its associated style.
Definition pixel.hpp:15
ftxui::Pixel::foreground_color
Color foreground_color
Definition pixel.hpp:49
ftxui::Pixel::underlined
bool underlined
Definition pixel.hpp:33