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Feature: LinearGradient color decorator. (#592)

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Based on the existing color decorators, create new ones to apply a gradient effect on the DOM.

Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
This commit is contained in:
Vinicius Moura Longaray
2023-03-22 09:59:02 -03:00
committed by GitHub
parent 2991b0389e
commit e83e90ced2
20 changed files with 671 additions and 106 deletions
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1
examples/component/CMakeLists.txt
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@@ -17,6 +17,7 @@ example(focus_cursor)
example(gallery)
example(homescreen)
example(input)
example(linear_gradient_gallery)
example(maybe)
example(menu)
example(menu2)

56
examples/component/linear_gradient_gallery.cpp Normal file
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@@ -0,0 +1,56 @@
#include <ftxui/component/component_base.hpp> // for ComponentBase, Component
#include <ftxui/dom/elements.hpp> // for operator|, Element, flex, bgcolor, text, vbox, center
#include <ftxui/dom/linear_gradient.hpp> // for LinearGradient
#include <ftxui/screen/color.hpp> // for Color, Color::Blue, Color::Red
#include <memory> // for __shared_ptr_access, shared_ptr
#include <string> // for allocator, operator+, char_traits, string, to_string
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Slider, Renderer, Vertical
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
int main(int argc, const char* argv[]) {
using namespace ftxui;
auto screen = ScreenInteractive::Fullscreen();
int angle = 180.f;
float start = 0.f;
float end = 1.f;
std::string slider_angle_text;
std::string slider_start_text;
std::string slider_end_text;
auto slider_angle = Slider(&slider_angle_text, &angle, 0, 360);
auto slider_start = Slider(&slider_start_text, &start, 0.f, 1.f);
auto slider_end = Slider(&slider_end_text, &end, 0.f, 1.f);
auto layout = Container::Vertical({
slider_angle,
slider_start,
slider_end,
});
auto renderer = Renderer(layout, [&] {
slider_angle_text = "angle = " + std::to_string(angle) + "°";
slider_start_text = "start = " + std::to_string(int(start * 100)) + "%";
slider_end_text = "end = " + std::to_string(int(end * 100)) + "%";
auto background = text("Gradient") | center |
bgcolor(LinearGradient()
.Angle(angle)
.Stop(Color::Blue, start)
.Stop(Color::Red, end));
return vbox({
background | flex,
layout->Render(),
}) |
flex;
});
screen.Loop(renderer);
}
// Copyright 2023 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.

3
examples/dom/CMakeLists.txt
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@@ -3,18 +3,19 @@ set(DIRECTORY_LIB dom)
example(border)
example(border_colored)
example(border_style)
example(canvas)
example(color_gallery)
example(color_info_palette256)
example(color_truecolor_HSV)
example(color_truecolor_RGB)
example(dbox)
example(canvas)
example(gauge)
example(gauge_direction)
example(graph)
example(gridbox)
example(hflow)
example(html_like)
example(linear_gradient)
example(package_manager)
example(paragraph)
example(separator)

26
examples/dom/linear_gradient.cpp Normal file
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@@ -0,0 +1,26 @@
#include <ftxui/dom/elements.hpp> // for bgcolor, operator|, operator|=, text, center, Element
#include <ftxui/dom/linear_gradient.hpp> // for LinearGradient::Stop, LinearGradient
#include <ftxui/screen/screen.hpp> // for Full, Screen
#include <memory> // for allocator, shared_ptr
#include "ftxui/dom/node.hpp" // for Render
#include "ftxui/screen/color.hpp" // for Color, Color::DeepPink1, Color::DeepSkyBlue1, Color::Yellow, ftxui
int main(int argc, const char* argv[]) {
using namespace ftxui;
auto document = text("gradient") | center;
document |= bgcolor(LinearGradient()
.Angle(45)
.Stop(Color::DeepPink1)
.Stop(Color::DeepSkyBlue1));
auto screen = Screen::Create(Dimension::Full(), Dimension::Full());
Render(screen, document);
screen.Print();
return 0;
}
// Copyright 2023 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.

103
examples/dom/style_color.cpp
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@@ -1,59 +1,60 @@
#include <ftxui/screen/screen.hpp> // for Full, Screen
#include <memory> // for allocator
#include <ftxui/dom/linear_gradient.hpp> // for LinearGradient
#include <ftxui/screen/screen.hpp> // for Full, Screen
#include <memory> // for allocator
#include "ftxui/dom/elements.hpp" // for text, bgcolor, color, vbox, Fit, filler, hbox
#include "ftxui/dom/elements.hpp" // for text, bgcolor, color, vbox, filler, Fit, hbox
#include "ftxui/dom/node.hpp" // for Render
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/color.hpp" // for Color, Color::Black, Color::Blue, Color::BlueLight, Color::Cyan, Color::CyanLight, Color::Default, Color::GrayDark, Color::GrayLight, Color::Green, Color::GreenLight, Color::Magenta, Color::MagentaLight, Color::Red, Color::RedLight, Color::White, Color::Yellow, Color::YellowLight
#include "ftxui/screen/color.hpp" // for Color, operator""_rgb, Color::Black, Color::Blue, Color::BlueLight, Color::Cyan, Color::CyanLight, Color::DeepSkyBlue4, Color::Default, Color::GrayDark, Color::GrayLight, Color::Green, Color::GreenLight, Color::Magenta, Color::MagentaLight, Color::Red, Color::RedLight, Color::SkyBlue1, Color::White, Color::Yellow, Color::YellowLight, ftxui
int main(int argc, const char* argv[]) {
using namespace ftxui;
// clang-format off
auto document =
hbox(
vbox(
color(Color::Default, text("Default")),
color(Color::Black, text("Black")),
color(Color::GrayDark, text("GrayDark")),
color(Color::GrayLight, text("GrayLight")),
color(Color::White, text("White")),
color(Color::Blue, text("Blue")),
color(Color::BlueLight, text("BlueLight")),
color(Color::Cyan, text("Cyan")),
color(Color::CyanLight, text("CyanLight")),
color(Color::Green, text("Green")),
color(Color::GreenLight, text("GreenLight")),
color(Color::Magenta, text("Magenta")),
color(Color::MagentaLight, text("MagentaLight")),
color(Color::Red, text("Red")),
color(Color::RedLight, text("RedLight")),
color(Color::Yellow, text("Yellow")),
color(Color::YellowLight, text("YellowLight")),
color(0x66ff66_rgb, text("Phosphor"))
),
vbox(
bgcolor(Color::Default, text("Default")),
bgcolor(Color::Black, text("Black")),
bgcolor(Color::GrayDark, text("GrayDark")),
bgcolor(Color::GrayLight, text("GrayLight")),
bgcolor(Color::White, text("White")),
bgcolor(Color::Blue, text("Blue")),
bgcolor(Color::BlueLight, text("BlueLight")),
bgcolor(Color::Cyan, text("Cyan")),
bgcolor(Color::CyanLight, text("CyanLight")),
bgcolor(Color::Green, text("Green")),
bgcolor(Color::GreenLight, text("GreenLight")),
bgcolor(Color::Magenta, text("Magenta")),
bgcolor(Color::MagentaLight, text("MagentaLight")),
bgcolor(Color::Red, text("Red")),
bgcolor(Color::RedLight, text("RedLight")),
bgcolor(Color::Yellow, text("Yellow")),
bgcolor(Color::YellowLight, text("YellowLight")),
bgcolor(0x66ff66_rgb, text("Phosphor"))
),
filler()
);
// clang-format on
auto document = hbox({
vbox({
color(Color::Default, text("Default")),
color(Color::Black, text("Black")),
color(Color::GrayDark, text("GrayDark")),
color(Color::GrayLight, text("GrayLight")),
color(Color::White, text("White")),
color(Color::Blue, text("Blue")),
color(Color::BlueLight, text("BlueLight")),
color(Color::Cyan, text("Cyan")),
color(Color::CyanLight, text("CyanLight")),
color(Color::Green, text("Green")),
color(Color::GreenLight, text("GreenLight")),
color(Color::Magenta, text("Magenta")),
color(Color::MagentaLight, text("MagentaLight")),
color(Color::Red, text("Red")),
color(Color::RedLight, text("RedLight")),
color(Color::Yellow, text("Yellow")),
color(Color::YellowLight, text("YellowLight")),
color(0x66ff66_rgb, text("Phosphor")),
color(LinearGradient(Color::SkyBlue1, Color::DeepSkyBlue4),
text("Skyblue to DeepSkyBlue")),
}),
vbox({
bgcolor(Color::Default, text("Default")),
bgcolor(Color::Black, text("Black")),
bgcolor(Color::GrayDark, text("GrayDark")),
bgcolor(Color::GrayLight, text("GrayLight")),
bgcolor(Color::White, text("White")),
bgcolor(Color::Blue, text("Blue")),
bgcolor(Color::BlueLight, text("BlueLight")),
bgcolor(Color::Cyan, text("Cyan")),
bgcolor(Color::CyanLight, text("CyanLight")),
bgcolor(Color::Green, text("Green")),
bgcolor(Color::GreenLight, text("GreenLight")),
bgcolor(Color::Magenta, text("Magenta")),
bgcolor(Color::MagentaLight, text("MagentaLight")),
bgcolor(Color::Red, text("Red")),
bgcolor(Color::RedLight, text("RedLight")),
bgcolor(Color::Yellow, text("Yellow")),
bgcolor(Color::YellowLight, text("YellowLight")),
bgcolor(0x66ff66_rgb, text("Phosphor")),
bgcolor(LinearGradient(Color::SkyBlue1, Color::DeepSkyBlue4),
text("Skyblue to DeepSkyBlue")),
}),
filler(),
});
auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
Render(screen, document);