mirror of
https://github.com/ArthurSonzogni/FTXUI.git
synced 2024-11-22 18:59:59 +08:00
62fb6298be
- Do not draw more frames than what is needed. - Fix MenuEntry transform state. - Fix Canvas animated example.
264 lines
8.6 KiB
C++
264 lines
8.6 KiB
C++
#include <cmath> // for sin, cos
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#include <ftxui/dom/elements.hpp> // for canvas, Element, separator, hbox, operator|, border
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#include <ftxui/screen/screen.hpp> // for Pixel
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#include <memory> // for allocator, shared_ptr, __shared_ptr_access
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#include <string> // for string, basic_string
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#include <utility> // for move
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#include <vector> // for vector, __alloc_traits<>::value_type
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#include "ftxui/component/component.hpp" // for Renderer, CatchEvent, Horizontal, Menu, Tab
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#include "ftxui/component/component_base.hpp" // for ComponentBase
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#include "ftxui/component/event.hpp" // for Event
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#include "ftxui/component/mouse.hpp" // for Mouse
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#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
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#include "ftxui/dom/canvas.hpp" // for Canvas
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#include "ftxui/screen/color.hpp" // for Color, Color::Red, Color::Blue, Color::Green, ftxui
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int main(int argc, const char* argv[]) {
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using namespace ftxui;
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int mouse_x = 0;
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int mouse_y = 0;
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// A triangle following the mouse, using braille characters.
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auto renderer_line_braille = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "Several lines (braille)");
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c.DrawPointLine(mouse_x, mouse_y, 80, 10, Color::Red);
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c.DrawPointLine(80, 10, 80, 40, Color::Blue);
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c.DrawPointLine(80, 40, mouse_x, mouse_y, Color::Green);
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return canvas(std::move(c));
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});
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// A triangle following the mouse, using block characters.
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auto renderer_line_block = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "Several lines (block)");
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c.DrawBlockLine(mouse_x, mouse_y, 80, 10, Color::Red);
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c.DrawBlockLine(80, 10, 80, 40, Color::Blue);
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c.DrawBlockLine(80, 40, mouse_x, mouse_y, Color::Green);
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return canvas(std::move(c));
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});
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// A circle following the mouse, using braille characters.
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auto renderer_circle_braille = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A circle (braille)");
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c.DrawPointCircle(mouse_x, mouse_y, 30);
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return canvas(std::move(c));
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});
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// A circle following the mouse, using block characters.
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auto renderer_circle_block = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A circle (block)");
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c.DrawBlockCircle(mouse_x, mouse_y, 30);
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return canvas(std::move(c));
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});
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// A filled circle following the mouse, using braille characters.
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auto renderer_circle_filled_braille = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A circle filled (braille)");
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c.DrawPointCircleFilled(mouse_x, mouse_y, 30);
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return canvas(std::move(c));
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});
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// A filled circle following the mouse, using block characters.
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auto renderer_circle_filled_block = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A circle filled (block)");
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c.DrawBlockCircleFilled(mouse_x, mouse_y, 30);
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return canvas(std::move(c));
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});
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// An ellipse following the mouse, using braille characters.
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auto renderer_ellipse_braille = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "An ellipse (braille)");
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c.DrawPointEllipse(mouse_x / 2, mouse_y / 2, mouse_x / 2, mouse_y / 2);
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return canvas(std::move(c));
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});
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// An ellipse following the mouse, using block characters.
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auto renderer_ellipse_block = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "An ellipse (block)");
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c.DrawBlockEllipse(mouse_x / 2, mouse_y / 2, mouse_x / 2, mouse_y / 2);
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return canvas(std::move(c));
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});
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// An ellipse following the mouse filled, using braille characters.
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auto renderer_ellipse_filled_braille = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A filled ellipse (braille)");
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c.DrawPointEllipseFilled(mouse_x / 2, mouse_y / 2, mouse_x / 2,
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mouse_y / 2);
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return canvas(std::move(c));
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});
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// An ellipse following the mouse filled, using block characters.
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auto renderer_ellipse_filled_block = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A filled ellipse (block)");
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c.DrawBlockEllipseFilled(mouse_x / 2, mouse_y / 2, mouse_x / 2,
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mouse_y / 2);
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c.DrawBlockEllipse(mouse_x / 2, mouse_y / 2, mouse_x / 2, mouse_y / 2);
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return canvas(std::move(c));
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});
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// A text following the mouse
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auto renderer_text = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A piece of text");
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c.DrawText(mouse_x, mouse_y, "This is a piece of text with effects",
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[](Pixel& p) {
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p.foreground_color = Color::Red;
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p.underlined = true;
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p.bold = true;
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});
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return canvas(std::move(c));
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});
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auto renderer_plot_1 = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A graph");
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std::vector<int> ys(100);
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for (int x = 0; x < 100; x++) {
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float dx = float(x - mouse_x);
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float dy = 50.f;
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ys[x] = int(dy + 20 * cos(dx * 0.14) + 10 * sin(dx * 0.42));
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}
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for (int x = 1; x < 99; x++)
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c.DrawPointLine(x, ys[x], x + 1, ys[x + 1]);
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return canvas(std::move(c));
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});
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auto renderer_plot_2 = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A symmetrical graph filled");
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std::vector<int> ys(100);
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for (int x = 0; x < 100; x++) {
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ys[x] = int(30 + //
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10 * cos(x * 0.2 - mouse_x * 0.05) + //
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5 * sin(x * 0.4) + //
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5 * sin(x * 0.3 - mouse_y * 0.05)); //
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}
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for (int x = 0; x < 100; x++) {
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c.DrawPointLine(x, 50 + ys[x], x, 50 - ys[x], Color::Red);
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}
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return canvas(std::move(c));
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});
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auto renderer_plot_3 = Renderer([&] {
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auto c = Canvas(100, 100);
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c.DrawText(0, 0, "A 2D gaussian plot");
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int size = 15;
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// mouse_x = 5mx + 3*my
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// mouse_y = 0mx + -5my + 90
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float my = (mouse_y - 90) / -5.f;
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float mx = (mouse_x - 3 * my) / 5.f;
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std::vector<std::vector<float>> ys(size, std::vector<float>(size));
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for (int y = 0; y < size; y++) {
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for (int x = 0; x < size; x++) {
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float dx = x - mx;
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float dy = y - my;
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ys[y][x] = -1.5 + 3.0 * std::exp(-0.2f * (dx * dx + dy * dy));
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}
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}
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for (int y = 0; y < size; y++) {
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for (int x = 0; x < size; x++) {
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if (x != 0) {
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c.DrawPointLine(
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5 * (x - 1) + 3 * (y - 0), 90 - 5 * (y - 0) - 5 * ys[y][x - 1],
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5 * (x - 0) + 3 * (y - 0), 90 - 5 * (y - 0) - 5 * ys[y][x]);
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}
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if (y != 0) {
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c.DrawPointLine(
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5 * (x - 0) + 3 * (y - 1), 90 - 5 * (y - 1) - 5 * ys[y - 1][x],
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5 * (x - 0) + 3 * (y - 0), 90 - 5 * (y - 0) - 5 * ys[y][x]);
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}
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}
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}
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return canvas(std::move(c));
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});
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int selected_tab = 12;
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auto tab = Container::Tab(
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{
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renderer_line_braille,
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renderer_line_block,
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renderer_circle_braille,
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renderer_circle_block,
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renderer_circle_filled_braille,
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renderer_circle_filled_block,
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renderer_ellipse_braille,
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renderer_ellipse_block,
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renderer_ellipse_filled_braille,
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renderer_ellipse_filled_block,
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renderer_plot_1,
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renderer_plot_2,
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renderer_plot_3,
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renderer_text,
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},
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&selected_tab);
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// This capture the last mouse position.
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auto tab_with_mouse = CatchEvent(tab, [&](Event e) {
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if (e.is_mouse()) {
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mouse_x = (e.mouse().x - 1) * 2;
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mouse_y = (e.mouse().y - 1) * 4;
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}
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return false;
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});
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std::vector<std::string> tab_titles = {
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"line (braille)",
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"line (block)",
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"circle (braille)",
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"circle (block)",
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"circle filled (braille)",
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"circle filled (block)",
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"ellipse (braille)",
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"ellipse (block)",
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"ellipse filled (braille)",
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"ellipse filled (block)",
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"plot_1 simple",
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"plot_2 filled",
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"plot_3 3D",
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"text",
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};
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auto tab_toggle = Menu(&tab_titles, &selected_tab);
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auto component = Container::Horizontal({
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tab_with_mouse,
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tab_toggle,
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});
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// Add some separator to decorate the whole component:
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auto component_renderer = Renderer(component, [&] {
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return hbox({
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tab_with_mouse->Render(),
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separator(),
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tab_toggle->Render(),
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}) |
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border;
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});
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auto screen = ScreenInteractive::FitComponent();
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screen.Loop(component_renderer);
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return 0;
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}
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// Copyright 2021 Arthur Sonzogni. All rights reserved.
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// Use of this source code is governed by the MIT license that can be found in
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// the LICENSED file.
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