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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
Download Patch File Download Diff File Expand all files Collapse all files

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;
}