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Add support for full RGB colors.

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FTXUI supported only the 16 colors palette.
This patch adds support for the 256 palette and the TrueColor(8×8×8)
mode.

This was made by kerdelos@ and fixes issue:
https://github.com/ArthurSonzogni/FTXUI/issues/45

Co-authored-by: Damien D <kerdelos@gmail.com>
Co-authored-by: Arthur Sonzogni <sonzogniarthur@gmail.com>
This commit is contained in:
Damien D
2020-09-02 11:32:22 +02:00
committed by Arthur Sonzogni
parent 49941b6403
commit dc8c090753
10 changed files with 846 additions and 38 deletions
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17
examples/dom/CMakeLists.txt
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@@ -4,23 +4,26 @@ function(example name)
set_property(TARGET ${name} PROPERTY CXX_STANDARD 17)
endfunction(example)
example(dbox)
example(border)
example(color_gallery)
example(dbox)
example(gauge)
example(package_manager)
example(separator)
example(graph)
example(hflow)
example(html_like)
example(package_manager)
example(paragraph)
example(separator)
example(size)
example(spinner)
example(style_blink)
example(style_bold)
example(style_color)
example(color_truecolor_RGB)
example(color_truecolor_HSV)
example(style_dim)
example(style_gallery)
example(style_inverted)
example(style_underlined)
example(size)
example(vbox_hbox)
example(hflow)
example(paragraph)
example(html_like)
example(window)

109
examples/dom/color_gallery.cpp Normal file
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@@ -0,0 +1,109 @@
// 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 <ftxui/dom/elements.hpp>
#include <ftxui/screen/screen.hpp>
#include <ftxui/screen/terminal.hpp>
#include <iostream>
#include "ftxui/screen/string.hpp"
int main(int argc, const char* argv[]) {
using namespace ftxui;
// clang-format off
auto terminal_info =
vbox(
text(L"Basic Color support : unknown"),
text(L"256 Color support : unknown"),
(Terminal::CanSupportTrueColors() ?
text(L"TrueColor support : Yes"):
text(L"TrueColor support : No"))
);
auto basic_color_display =
vbox(
text(L"Basic Color Set:"),
hbox(
vbox(
color(Color::Default, text(L"Default")),
color(Color::Black, text(L"Black")),
color(Color::GrayDark, text(L"GrayDark")),
color(Color::GrayLight, text(L"GrayLight")),
color(Color::White, text(L"White")),
color(Color::Blue, text(L"Blue")),
color(Color::BlueLight, text(L"BlueLight")),
color(Color::Cyan, text(L"Cyan")),
color(Color::CyanLight, text(L"CyanLight")),
color(Color::Green, text(L"Green")),
color(Color::GreenLight, text(L"GreenLight")),
color(Color::Magenta, text(L"Magenta")),
color(Color::MagentaLight, text(L"MagentaLight")),
color(Color::Red, text(L"Red")),
color(Color::RedLight, text(L"RedLight")),
color(Color::Yellow, text(L"Yellow")),
color(Color::YellowLight, text(L"YellowLight"))
),
vbox(
bgcolor(Color::Default, text(L"Default")),
bgcolor(Color::Black, text(L"Black")),
bgcolor(Color::GrayDark, text(L"GrayDark")),
bgcolor(Color::GrayLight, text(L"GrayLight")),
bgcolor(Color::White, text(L"White")),
bgcolor(Color::Blue, text(L"Blue")),
bgcolor(Color::BlueLight, text(L"BlueLight")),
bgcolor(Color::Cyan, text(L"Cyan")),
bgcolor(Color::CyanLight, text(L"CyanLight")),
bgcolor(Color::Green, text(L"Green")),
bgcolor(Color::GreenLight, text(L"GreenLight")),
bgcolor(Color::Magenta, text(L"Magenta")),
bgcolor(Color::MagentaLight, text(L"MagentaLight")),
bgcolor(Color::Red, text(L"Red")),
bgcolor(Color::RedLight, text(L"RedLight")),
bgcolor(Color::Yellow, text(L"Yellow")),
bgcolor(Color::YellowLight, text(L"YellowLight"))
)
)
);
// clang-format on
auto palette_256_color_display = vbox(text(L"256 color palette:"));
int y = -1;
for (int i = 0; i < 256; ++i) {
if (i % 16 == 0) {
palette_256_color_display->children.push_back(hbox());
++y;
}
std::string number = std::to_string(i);
while (number.length() < 4) {
number.push_back(' ');
}
palette_256_color_display->children.back()->children.push_back(
bgcolor(Color::Palette256(i), text(to_wstring(number))));
}
auto true_color_display = vbox(text(L"a true color grandient:"));
for (int i = 0; i < 17; ++i) {
true_color_display->children.push_back(hbox());
for (int j = 0; j < 30; ++j) {
true_color_display->children.back()->children.push_back(
bgcolor(Color(50 + i * 5, 100 + j, 150), text(L" ")));
}
}
auto document =
vbox(terminal_info, text(L""),
hbox(basic_color_display, text(L" "), palette_256_color_display,
text(L" "), true_color_display));
// clang-format on
auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
Render(screen, document);
std::cout << screen.ToString();
return 0;
}

32
examples/dom/color_truecolor_HSV.cpp Normal file
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@@ -0,0 +1,32 @@
// 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 <ftxui/dom/elements.hpp>
#include <ftxui/screen/screen.hpp>
#include <ftxui/screen/terminal.hpp>
#include <iostream>
#include "ftxui/screen/string.hpp"
int main(int argc, const char* argv[]) {
using namespace ftxui;
int saturation = 255;
Elements array;
for (int value = 0; value < 255; value += 10) {
Elements line;
for (int hue = 0; hue < 255; hue += 2)
line.push_back(text(L" ") | bgcolor(Color::HSV(hue, saturation, value)));
array.push_back(hbox(std::move(line)));
}
auto document = vbox(std::move(array));
auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
Render(screen, document);
std::cout << screen.ToString();
return 0;
}

55
examples/dom/color_truecolor_RGB.cpp Normal file
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@@ -0,0 +1,55 @@
// 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 <cmath>
#include <ftxui/dom/elements.hpp>
#include <ftxui/screen/screen.hpp>
#include <ftxui/screen/terminal.hpp>
#include <iostream>
#include "ftxui/screen/string.hpp"
int main(int argc, const char* argv[]) {
using namespace ftxui;
int saturation = 255;
Elements red_line;
Elements green_line;
Elements blue_line;
Elements cyan_line;
Elements magenta_line;
Elements yellow_line;
for (int value = 0; value < 255; value += 3) {
int v = value * value / 255;
red_line.push_back(text(L" ") | bgcolor(Color::RGB(v, 0, 0)));
green_line.push_back(text(L" ") | bgcolor(Color::RGB(0, v, 0)));
blue_line.push_back(text(L" ") | bgcolor(Color::RGB(0, 0, v)));
cyan_line.push_back(text(L" ") | bgcolor(Color::RGB(0, v, v)));
magenta_line.push_back(text(L" ") | bgcolor(Color::RGB(v, 0, v)));
yellow_line.push_back(text(L" ") | bgcolor(Color::RGB(v, v, 0)));
}
auto document = vbox({
window(text(L"Primary colors"),
vbox({
hbox({text(L"Red line :"), hbox(std::move(red_line))}),
hbox({text(L"Green line :"), hbox(std::move(green_line))}),
hbox({text(L"Blue line :"), hbox(std::move(blue_line))}),
})),
window(text(L"Secondary colors"),
vbox({
hbox({text(L"cyan line :"), hbox(std::move(cyan_line))}),
hbox({text(L"magenta line:"), hbox(std::move(magenta_line))}),
hbox({text(L"Yellow line :"), hbox(std::move(yellow_line))}),
})),
});
auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
Render(screen, document);
std::cout << screen.ToString();
return 0;
}