FTXUI/examples/component/canvas_animated.cpp
Arthur Sonzogni 7614bf04a6
Address felixjulianheitmann suggestions. (#288)
- Remove unused examples/dom/flexbox.cpp
- Add canvas(width, height, void(Canvas&)) method
2021-12-24 17:29:39 +01:00

258 lines
8.0 KiB
C++

#include <stddef.h> // for size_t
#include <stdio.h> // for getchar
#include <ftxui/dom/elements.hpp> // for operator|, size, Element, text, hcenter, Decorator, Fit, WIDTH, hflow, window, EQUAL, GREATER_THAN, HEIGHT, bold, border, dim, LESS_THAN
#include <ftxui/screen/screen.hpp> // for Full, Screen
#include <memory> // for allocator, shared_ptr
#include <string> // for operator+, to_string, char_traits, string
#include "ftxui/component/component.hpp"
#include "ftxui/component/screen_interactive.hpp"
#include <cmath>
int main(int argc, const char* argv[]) {
using namespace ftxui;
int mouse_x = 0;
int mouse_y = 0;
// A triangle following the mouse, using braille characters.
auto renderer_line_braille = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "Several lines (braille)");
c.DrawPointLine(mouse_x, mouse_y, 80, 10, Color::Red);
c.DrawPointLine(80, 10, 80, 40, Color::Blue);
c.DrawPointLine(80, 40, mouse_x, mouse_y, Color::Green);
return canvas(std::move(c));
});
// A triangle following the mouse, using block characters.
auto renderer_line_block = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "Several lines (block)");
c.DrawBlockLine(mouse_x, mouse_y, 80, 10, Color::Red);
c.DrawBlockLine(80, 10, 80, 40, Color::Blue);
c.DrawBlockLine(80, 40, mouse_x, mouse_y, Color::Green);
return canvas(std::move(c));
});
// A circle following the mouse, using braille characters.
auto renderer_circle_braille = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "A circle (braille)");
c.DrawPointCircle(mouse_x, mouse_y, 30);
return canvas(std::move(c));
});
// A circle following the mouse, using block characters.
auto renderer_circle_block = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "A circle (block)");
c.DrawBlockCircle(mouse_x, mouse_y, 30);
return canvas(std::move(c));
});
// A filled circle following the mouse, using braille characters.
auto renderer_circle_filled_braille = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "A circle filled (braille)");
c.DrawPointCircleFilled(mouse_x, mouse_y, 30);
return canvas(std::move(c));
});
// A filled circle following the mouse, using block characters.
auto renderer_circle_filled_block = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "A circle filled (block)");
c.DrawBlockCircleFilled(mouse_x, mouse_y, 30);
return canvas(std::move(c));
});
// An ellipse following the mouse, using braille characters.
auto renderer_ellipse_braille = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "An ellipse (braille)");
c.DrawPointEllipse(mouse_x / 2, mouse_y / 2, mouse_x / 2, mouse_y / 2);
return canvas(std::move(c));
});
// An ellipse following the mouse, using block characters.
auto renderer_ellipse_block = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "An ellipse (block)");
c.DrawBlockEllipse(mouse_x / 2, mouse_y / 2, mouse_x / 2, mouse_y / 2);
return canvas(std::move(c));
});
// An ellipse following the mouse filled, using braille characters.
auto renderer_ellipse_filled_braille = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "A filled ellipse (braille)");
c.DrawPointEllipseFilled(mouse_x / 2, mouse_y / 2, mouse_x / 2,
mouse_y / 2);
return canvas(std::move(c));
});
// An ellipse following the mouse filled, using block characters.
auto renderer_ellipse_filled_block = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0,0, "A filled ellipse (block)");
c.DrawBlockEllipseFilled(mouse_x / 2, mouse_y / 2, mouse_x / 2,
mouse_y / 2);
c.DrawBlockEllipse(mouse_x / 2, mouse_y / 2, mouse_x / 2, mouse_y / 2);
return canvas(std::move(c));
});
// A text following the mouse
auto renderer_text = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0, 0, "A piece of text");
c.DrawText(mouse_x, mouse_y, "This is a piece of text with effects",
[](Pixel& p) {
p.foreground_color = Color::Red;
p.underlined = true;
p.bold = true;
});
return canvas(std::move(c));
});
auto renderer_plot_1 = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0, 0, "A graph");
std::vector<int> ys(100);
for (int x = 0; x < 100; x++) {
float dx = x - mouse_x;
float dy = 50;
ys[x] = dy + 20 * cos(dx * 0.14) + 10 * sin(dx * 0.42);
}
for (int x = 1; x < 99; x++)
c.DrawPointLine(x, ys[x], x + 1, ys[x + 1]);
return canvas(std::move(c));
});
auto renderer_plot_2 = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0, 0, "A symmetrical graph filled");
std::vector<int> ys(100);
for (int x = 0; x < 100; x++) {
ys[x] = 30 + //
10 * cos(x * 0.2 - mouse_x * 0.05) + //
5 * sin(x * 0.4) + //
5 * sin(x * 0.3 - mouse_y * 0.05); //
}
for (int x = 0; x < 100; x++) {
c.DrawPointLine(x, 50+ys[x], x, 50-ys[x], Color::Red);
}
return canvas(std::move(c));
});
auto renderer_plot_3 = Renderer([&] {
auto c = Canvas(100, 100);
c.DrawText(0, 0, "A 2D gaussian plot");
int size = 15;
// mouse_x = 5mx + 3*my
// mouse_y = 0mx + -5my + 90
float my = (mouse_y - 90) / -5.f;
float mx = (mouse_x - 3 * my) / 5.f;
std::vector<std::vector<float>> ys(size, std::vector<float>(size));
for (int y = 0; y < size; y++) {
for (int x = 0; x < size; x++) {
float dx = x-mx;
float dy = y-my;
ys[y][x] = -1.5 + 3.0 * std::exp(-0.2f * (dx*dx+dy*dy));
}
}
for (int y = 0; y < size; y++) {
for (int x = 0; x < size; x++) {
if (x != 0) {
c.DrawPointLine(
5 * (x - 1) + 3 * (y - 0), 90 - 5 * (y - 0) - 5 * ys[y][x - 1],
5 * (x - 0) + 3 * (y - 0), 90 - 5 * (y - 0) - 5 * ys[y][x]);
}
if (y != 0) {
c.DrawPointLine(
5 * (x - 0) + 3 * (y - 1), 90 - 5 * (y - 1) - 5 * ys[y - 1][x],
5 * (x - 0) + 3 * (y - 0), 90 - 5 * (y - 0) - 5 * ys[y][x]);
}
}
}
return canvas(std::move(c));
});
int selected_tab = 0;
auto tab = Container::Tab({
renderer_line_braille,
renderer_line_block,
renderer_circle_braille,
renderer_circle_block,
renderer_circle_filled_braille,
renderer_circle_filled_block,
renderer_ellipse_braille,
renderer_ellipse_block,
renderer_ellipse_filled_braille,
renderer_ellipse_filled_block,
renderer_plot_1,
renderer_plot_2,
renderer_plot_3,
renderer_text,
}, &selected_tab);
// This capture the last mouse position.
auto tab_with_mouse = CatchEvent(tab, [&](Event e) {
if (e.is_mouse()) {
mouse_x = (e.mouse().x - 1) * 2;
mouse_y = (e.mouse().y - 1) * 4;
}
return false;
});
std::vector<std::string> tab_titles = {
"line (braille)",
"line (block)",
"circle (braille)",
"circle (block)",
"circle filled (braille)",
"circle filled (block)",
"ellipse (braille)",
"ellipse (block)",
"ellipse filled (braille)",
"ellipse filled (block)",
"plot_1 simple",
"plot_2 filled",
"plot_3 3D",
"text",
};
auto tab_toggle = Menu(&tab_titles, &selected_tab);
auto component = Container::Horizontal({
tab_with_mouse,
tab_toggle,
});
// Add some separator to decorate the whole component:
auto component_renderer = Renderer(component, [&] {
return hbox({
tab_with_mouse->Render(),
separator(),
tab_toggle->Render(),
}) |
border;
});
auto screen = ScreenInteractive::FitComponent();
screen.Loop(component_renderer);
return 0;
}
// Copyright 2021 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSED file.