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Merge pull request #90 from ArthurSonzogni/functionnal_component

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Functional component
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Arthur Sonzogni 2021-05-15 00:39:22 +02:00 committed by GitHub
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5
CMakeLists.txt
View File

@ -15,7 +15,7 @@ endif()
project(ftxui
LANGUAGES CXX
VERSION 0.4.${git_version}
VERSION 0.5.${git_version}
)
option(FTXUI_BUILD_EXAMPLES "Set to ON to build examples" ON)
@ -80,6 +80,7 @@ add_library(component
include/ftxui/component/captured_mouse.hpp
include/ftxui/component/checkbox.hpp
include/ftxui/component/component.hpp
include/ftxui/component/component_base.hpp
include/ftxui/component/container.hpp
include/ftxui/component/event.hpp
include/ftxui/component/input.hpp
@ -88,7 +89,6 @@ add_library(component
include/ftxui/component/radiobox.hpp
include/ftxui/component/receiver.hpp
include/ftxui/component/screen_interactive.hpp
include/ftxui/component/slider.hpp
include/ftxui/component/toggle.hpp
src/ftxui/component/button.cpp
src/ftxui/component/checkbox.cpp
@ -99,6 +99,7 @@ add_library(component
src/ftxui/component/menu.cpp
src/ftxui/component/radiobox.cpp
src/ftxui/component/radiobox.cpp
src/ftxui/component/renderer.cpp
src/ftxui/component/screen_interactive.cpp
src/ftxui/component/slider.cpp
src/ftxui/component/terminal_input_parser.cpp

2
doc/Doxyfile.in
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@ -44,7 +44,7 @@ PROJECT_NUMBER = @CMAKE_PROJECT_VERSION@
# for a project that appears at the top of each page and should give viewer a
# quick idea about the purpose of the project. Keep the description short.
PROJECT_BRIEF = "C++ functionnal terminal UI."
PROJECT_BRIEF = "C++ functional terminal UI."
# With the PROJECT_LOGO tag one can specify a logo or an icon that is included
# in the documentation. The maximum height of the logo should not exceed 55

1
doc/example_list.md
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@ -34,6 +34,7 @@
@example ./examples/component/input.cpp
@example ./examples/component/homescreen.cpp
@example ./examples/component/radiobox.cpp
@example ./examples/component/slider_rgb.cpp
@example ./examples/component/menu.cpp
@example ./examples/component/menu_style.cpp
@example ./examples/component/radiobox_in_frame.cpp

208
doc/mainpage.md
View File

@ -31,7 +31,7 @@ int main(void) {
Dimension::Fit(document) // Height
);
Render(screen, document);
std::cout << screen.ToString() << std::endl;
screen.Print();
return EXIT_SUCCESS;
}
@ -44,28 +44,71 @@ int main(void) {
└────┘└─────────────────────────────────────────────────────────────────┘└─────┘
```
**cmake**
```c
# Build
## Using CMake
CMakeLists.txt
~~~cmake
cmake_minimum_required (VERSION 3.11)
# --- Fetch FTXUI --------------------------------------------------------------
include(FetchContent)
set(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
FetchContent_Declare(ftxui
GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
# Specify a GIT_TAG here.
)
FetchContent_GetProperties(ftxui)
if(NOT ftxui_POPULATED)
FetchContent_Populate(ftxui)
add_subdirectory(${ftxui_SOURCE_DIR} ${ftxui_BINARY_DIR} EXCLUDE_FROM_ALL)
endif()
add_executable(main src/main.cpp)
target_link_libraries(main
# ------------------------------------------------------------------------------
project(ftxui-starter
LANGUAGES CXX
VERSION 1.0.0
)
add_executable(ftxui-starter src/main.cpp)
target_include_directories(ftxui-starter PRIVATE src)
target_link_libraries(ftxui-starter
PRIVATE ftxui::screen
PRIVATE ftxui::dom
PRIVATE ftxui::component # Not needed for this example.
)
set_target_properties(main PROPERTIES CXX_STANDARD 17)
```
# C++17 is used. We requires fold expressions at least.
set_target_properties(ftxui-starter PROPERTIES CXX_STANDARD 17)
~~~
Build
~~~
mkdir build && cd build
cmake ..
make
./main
~~~
## Using NXXM
**.nxxm/deps**
~~~json
{
"ArthurSonzogni/FTXUI": {}
}
~~~
Build:
~~~
nxxm . -t clang-cxx17
~~~
# List of modules.
@ -82,7 +125,7 @@ input. It defines a set of ftxui::Component. The use can navigates using the
arrow keys and interact with widgets like checkbox/inputbox/... You can make you
own components.
## screen
# screen
It defines a ftxui::Screen. This is a grid of ftxui::Pixel. A Pixel represent a
unicode character and its associated style (bold, colors, etc...).
@ -106,7 +149,7 @@ The screen can be printed as a string using ftxui::Screen::ToString().
}
~~~
## dom
# dom
This module defines a hierachical set of Element. An element manages layout and can be responsive to the terminal dimensions.
@ -130,23 +173,6 @@ You only need one header: ftxui/dom/elements.hpp
\include ftxui/dom/elements.hpp
## component
Finally, the ftxui/component directory defines the logic to get interactivity.
Please take a look at ./examples/component
This provides:
1. A main loop.
2. Get events and respond to them.
3. A predefined implementation of "keyboard navigation".
4. A set of predefined widget: CheckBox, RadioBox, Input, Menu, Toggle.
# ftxui/dom
Every elements of the dom are declared from:
\ref ftxui/dom/elements.hpp
## text
The most simple widget. It displays a text.
@ -219,6 +245,7 @@ border(gauge(0.5))
~~~
## graph
@htmlonly
<script id="asciicast-223726" src="https://asciinema.org/a/223726.js" async></script>
@endhtmlonly
@ -362,7 +389,25 @@ An horizontal flow layout is implemented by:
└────┘└───────────────────────────────────┘└───────────────────────────────────┘
~~~
# ftxui/component
# component
The `ftxui/component` directory defines the logic to get produce
interactive component responding to user's events (keyboard, mouse, etc...)
A ftxui::ScreenInteractive defines a main loop to render a component.
A ftxui::Component is a shared pointer to a ftxui::ComponentBase. The later
defines
- ftxui::ComponentBase::Render(): How to render the interface.
- ftxui::ComponentBase::OnEvent(): How to react to events.
- ftxui::ComponentBase::Add(): Give a parent/child relation ship in between
two component. This defines a tree a components, which help properly define
how keyboard navigation works.
Predefined components are available in `ftxui/dom/component.hpp`:
\include ftxui/component/component.hpp
Element are stateless object. On the other side, components are used when an
internal state is needed. Components are used to interact with the user with
@ -370,7 +415,7 @@ its keyboard. They handle keyboard navigation, including component focus.
## Input
The component: \ref ftxui::Input
Produced by: ftxui::Input() from "ftxui/component/component.hpp"
@htmlonly
<script id="asciicast-223719" src="https://asciinema.org/a/223719.js" async></script>
@ -378,7 +423,7 @@ The component: \ref ftxui::Input
## Menu
The component: \ref ftxui::Menu
Produced by: ftxui::Menu() from "ftxui/component/component.hpp"
@htmlonly
<script id="asciicast-223720" src="https://asciinema.org/a/223720.js" async></script>
@ -386,7 +431,7 @@ The component: \ref ftxui::Menu
## Toggle.
The component: \ref ftxui::Toggle
Produced by: ftxui::Toggle() from "ftxui/component/component.hpp"
@htmlonly
<script id="asciicast-223722" src="https://asciinema.org/a/223722.js" async></script>
@ -394,7 +439,7 @@ The component: \ref ftxui::Toggle
## CheckBox
The component: \ref ftxui::CheckBox
Produced by: ftxui::Checkbox() from "ftxui/component/component.hpp"
@htmlonly
<script id="asciicast-223724" src="https://asciinema.org/a/223724.js" async></script>
@ -402,99 +447,32 @@ The component: \ref ftxui::CheckBox
## RadioBox
The component: \ref ftxui::RadioBox
Produced by: ftxui::Radiobox() from "ftxui/component/component.hpp"
@htmlonly
<script id="asciicast-223725" src="https://asciinema.org/a/223725.js" async></script>
@endhtmlonly
# Build
## Renderer
Assuming this example example.cpp file.
Produced by: ftxui::Renderer() from \ref "ftxui/component/component.hpp". This
component decorate another one by using a different function to render an
interface.
**main.cpp**
~~~cpp
#include "ftxui/screen/screen.c
#include "ftxui/dom/elements.c
#include <iostream>
## Container::Horizontal
int main(int argc, const char *argv[]) {
using namespace ftxui;
auto document =
hbox({
text(L"left") | bold | border,
text(L"middle") | flex | border,
text(L"right") | border,
});
auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
Render(screen, document);
Produced by: ftxui::Container::Horizontal() from
"ftxui/component/component.hpp". It displays a list of components horizontally
and handle keyboard/mouse navigation.
std::cout << screen.ToString();
## Container::Vertial
return 0;
}
~~~
Produced by: ftxui::Container::Vertical() from
"ftxui/component/component.hpp". It displays a list of components vertically
and handles keyboard/mouse navigation.
## Using CMake
## Container::Tab
CMakeLists.txt
~~~cmake
cmake_minimum_required (VERSION 3.11)
# --- Fetch FTXUI --------------------------------------------------------------
include(FetchContent)
set(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
FetchContent_Declare(ftxui
GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
# Specify a GIT TAG here.
)
FetchContent_GetProperties(ftxui)
if(NOT ftxui_POPULATED)
FetchContent_Populate(ftxui)
add_subdirectory(${ftxui_SOURCE_DIR} ${ftxui_BINARY_DIR} EXCLUDE_FROM_ALL)
endif()
# ------------------------------------------------------------------------------
project(ftxui-starter
LANGUAGES CXX
VERSION 1.0.0
)
add_executable(ftxui-starter src/main.cpp)
target_include_directories(ftxui-starter PRIVATE src)
target_link_libraries(ftxui-starter
PRIVATE ftxui::screen
PRIVATE ftxui::dom
PRIVATE ftxui::component # Not needed for this example.
)
# C++17 is used. We requires fold expressions at least.
set_target_properties(ftxui-starter PROPERTIES CXX_STANDARD 17)
~~~
Build
~~~
mkdir build && cd build
cmake ..
make
./main
~~~
## Using NXXM
**.nxxm/deps**
~~~json
{
"ArthurSonzogni/FTXUI": {}
}
~~~
Build:
~~~
nxxm . -t clang-cxx17
~~~
Produced by: ftxui::Container::Tab() from
"ftxui/component/component.hpp". It take a list of component and display only
one of them. This is useful for implementing a tab bar.

1
examples/component/CMakeLists.txt
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@ -17,6 +17,7 @@ example(modal_dialog)
example(radiobox)
example(radiobox_in_frame)
example(slider)
example(slider_rgb)
example(tab_horizontal)
example(tab_vertical)
example(toggle)

70
examples/component/button.cpp
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@ -1,51 +1,37 @@
#include <functional> // for function
#include <memory> // for unique_ptr, make_u...
#include <string> // for wstring
#include <utility> // for move
#include <vector> // for vector
#include <memory> // for __shared_ptr_access, shared_ptr
#include <string> // for operator+, to_wstring
#include "ftxui/component/button.hpp" // for Button
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Button, Horizontal, Renderer
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/dom/elements.hpp" // for separator, Element, gauge, text, operator|, vbox, border
using namespace ftxui;
class MyComponent : public Component {
private:
std::vector<std::unique_ptr<Button>> buttons_;
Container container_ = Container::Horizontal();
public:
MyComponent() {
Add(&container_);
auto button_add = std::make_unique<Button>();
auto button_remove = std::make_unique<Button>();
container_.Add(button_add.get());
container_.Add(button_remove.get());
button_add->label = L"Add one button";
button_remove->label = L"Remove last button";
button_add->on_click = [&] {
auto extra_button = std::make_unique<Button>();
extra_button->label = L"extra button";
container_.Add(extra_button.get());
buttons_.push_back(std::move(extra_button));
};
button_remove->on_click = [&] { buttons_.resize(buttons_.size() - 1); };
buttons_.push_back(std::move(button_add));
buttons_.push_back(std::move(button_remove));
}
};
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::TerminalOutput();
MyComponent component;
screen.Loop(&component);
int value = 50;
// The tree of components. This defines how to navigate using the keyboard.
auto buttons = Container::Horizontal({
Button("Decrease", [&] { value--; }),
Button("Increase", [&] { value++; }),
});
// Modify the way to render them on screen:
auto component = Renderer(buttons, [&] {
return vbox({
text(L"value = " + std::to_wstring(value)),
separator(),
gauge(value * 0.01f),
separator(),
buttons->Render(),
}) |
border;
});
auto screen = ScreenInteractive::FitComponent();
screen.Loop(component);
return 0;
}

37
examples/component/checkbox.cpp
View File

@ -1,34 +1,23 @@
#include "ftxui/component/checkbox.hpp"
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Checkbox, Vertical
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
using namespace ftxui;
class MyComponent : public Component {
private:
CheckBox box_1_;
CheckBox box_2_;
CheckBox box_3_;
Container container_ = Container::Vertical();
public:
MyComponent() {
Add(&container_);
container_.Add(&box_1_);
container_.Add(&box_2_);
container_.Add(&box_3_);
box_1_.label = L"Build examples";
box_2_.label = L"Build tests";
box_3_.label = L"Use WebAssembly";
box_3_.state = true;
}
};
int main(int argc, const char* argv[]) {
bool build_examples_state = false;
bool build_tests_state = false;
bool use_webassembly_state = true;
auto component = Container::Vertical({
Checkbox("Build examples", &build_examples_state),
Checkbox("Build tests", &build_tests_state),
Checkbox("Use WebAssembly", &use_webassembly_state),
});
auto screen = ScreenInteractive::TerminalOutput();
MyComponent component;
screen.Loop(&component);
screen.Loop(component);
return 0;
}

62
examples/component/checkbox_in_frame.cpp
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@ -1,50 +1,36 @@
#include <memory> // for allocator_traits<>...
#include <string> // for operator+, wstring
#include <utility> // for move
#include <vector> // for vector
#include <memory> // for __shared_ptr_access, allocator_traits<>::value_type, shared_ptr
#include <string> // for operator+
#include <vector> // for vector
#include "ftxui/component/checkbox.hpp" // for CheckBox
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Checkbox, Renderer, Vertical
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/dom/elements.hpp" // for Element, operator|
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/string.hpp" // for to_wstring
#include "ftxui/dom/elements.hpp" // for Element, operator|, size, border, frame, HEIGHT, LESS_THAN
#include "ftxui/screen/string.hpp" // for to_wstring
using namespace ftxui;
class MyComponent : public Component {
public:
MyComponent() {
Add(&container);
checkbox.resize(30);
for (int i = 0; i < checkbox.size(); ++i) {
checkbox[i].label = (L"CheckBox " + to_wstring(i));
container.Add(&checkbox[i]);
}
}
// clang-format off
Element Render() override {
Elements content;
for (auto& it : checkbox) {
content.push_back(it.Render());
}
return vbox(std::move(content))
| frame
| size(HEIGHT, LESS_THAN, 10)
| border;
}
private:
std::vector<CheckBox> checkbox;
Container container = Container::Vertical();
struct CheckboxState {
bool checked;
};
int main(int argc, const char* argv[]) {
int size = 30;
std::vector<CheckboxState> states(size);
auto container = Container::Vertical({});
for (int i = 0; i < size; ++i) {
states[i].checked = false;
container->Add(Checkbox(L"Checkbox" + to_wstring(i), &states[i].checked));
}
auto component = Renderer(container, [&] {
return container->Render() | frame | ftxui::size(HEIGHT, LESS_THAN, 10) |
border;
});
auto screen = ScreenInteractive::FitComponent();
MyComponent component;
screen.Loop(&component);
screen.Loop(component);
return 0;
}

222
examples/component/gallery.cpp
View File

@ -1,130 +1,126 @@
#include <functional> // for function
#include <memory> // for allocator, unique_ptr
#include <string> // for wstring
#include <memory> // for shared_ptr, allocator, __shared_ptr_access
#include <string> // for wstring, basic_string
#include <vector> // for vector
#include "ftxui/component/button.hpp" // for Button
#include "ftxui/component/checkbox.hpp" // for CheckBox
#include "ftxui/component/component.hpp" // for Component, Compone...
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/input.hpp" // for Input
#include "ftxui/component/menu.hpp" // for Menu
#include "ftxui/component/radiobox.hpp" // for RadioBox
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/component/slider.hpp" // for Slider
#include "ftxui/component/toggle.hpp" // for Toggle
#include "ftxui/dom/elements.hpp" // for separator, operator|
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Slider, Checkbox, Vertical, Renderer, Button, Input, Menu, Radiobox, Toggle
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for Component, ScreenInteractive
#include "ftxui/dom/elements.hpp" // for separator, Element, operator|, size, xflex, text, WIDTH, hbox, vbox, EQUAL, border, GREATER_THAN
using namespace ftxui;
class MyComponent : public Component {
Container container = Container::Vertical();
Menu menu;
Toggle toggle;
Container checkbox_container = Container::Vertical();
CheckBox checkbox1;
CheckBox checkbox2;
RadioBox radiobox;
Input input;
Button button;
int slider_value_1_ = 12;
int slider_value_2_ = 56;
int slider_value_3_ = 128;
ComponentPtr slider_1_ = Slider(L"R:", &slider_value_1_, 0, 256, 1);
ComponentPtr slider_2_ = Slider(L"G:", &slider_value_2_, 0, 256, 1);
ComponentPtr slider_3_ = Slider(L"B:", &slider_value_3_, 0, 256, 1);
public:
MyComponent() {
Add(&container);
menu.entries = {
L"Menu 1",
L"Menu 2",
L"Menu 3",
L"Menu 4",
};
container.Add(&menu);
toggle.entries = {
L"Toggle_1",
L"Toggle_2",
};
container.Add(&toggle);
container.Add(&checkbox_container);
checkbox1.label = L"checkbox1";
checkbox_container.Add(&checkbox1);
checkbox2.label = L"checkbox2";
checkbox_container.Add(&checkbox2);
radiobox.entries = {
L"Radiobox 1",
L"Radiobox 2",
L"Radiobox 3",
L"Radiobox 4",
};
container.Add(&radiobox);
input.placeholder = L"Input placeholder";
container.Add(&input);
container.Add(slider_1_.get());
container.Add(slider_2_.get());
container.Add(slider_3_.get());
button.label = L"Quit";
button.on_click = [&] { on_quit(); };
container.Add(&button);
}
Element Render(std::wstring name, Element element) {
// Display a component nicely with a title on the left.
Component Wrap(std::wstring name, Component component) {
return Renderer(component, [name, component] {
return hbox({
text(name) | size(WIDTH, EQUAL, 8),
separator(),
element | xflex,
component->Render() | xflex,
}) |
xflex;
}
Element Render(std::wstring name, Component& component) {
return Render(name, component.Render());
}
Element Render() override {
return //
vbox({
Render(L"menu", menu),
separator(),
Render(L"toggle", toggle),
separator(),
Render(L"checkbox", checkbox_container),
separator(),
Render(L"radiobox", radiobox),
separator(),
Render(L"input", input) | size(WIDTH, LESS_THAN, 50),
separator(),
Render(L"slider", //
vbox({
slider_1_->Render(),
slider_2_->Render(),
slider_3_->Render(),
})),
separator(),
Render(L"button", button),
}) |
xflex | size(WIDTH, GREATER_THAN, 40) | border;
}
std::function<void()> on_quit = [] {};
};
});
}
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::FitComponent();
MyComponent component;
component.on_quit = screen.ExitLoopClosure();
screen.Loop(&component);
// -- Menu
// ----------------------------------------------------------------------
const std::vector<std::wstring> menu_entries = {
L"Menu 1",
L"Menu 2",
L"Menu 3",
L"Menu 4",
};
int menu_selected = 0;
auto menu = Menu(&menu_entries, &menu_selected);
menu = Wrap(L"Menu", menu);
// -- Toggle------------------------------------------------------------------
int toggle_selected = 0;
std::vector<std::wstring> toggle_entries = {
L"Toggle_1",
L"Toggle_2",
};
auto toggle = Toggle(&toggle_entries, &toggle_selected);
toggle = Wrap(L"Toggle", toggle);
// -- Checkbox ---------------------------------------------------------------
bool checkbox_1_selected = false;
bool checkbox_2_selected = false;
auto checkboxes = Container::Vertical({
Checkbox("checkbox1", &checkbox_1_selected),
Checkbox("checkbox2", &checkbox_2_selected),
});
checkboxes = Wrap(L"Checkbox", checkboxes);
// -- Radiobox ---------------------------------------------------------------
int radiobox_selected = 0;
std::vector<std::wstring> radiobox_entries = {
L"Radiobox 1",
L"Radiobox 2",
L"Radiobox 3",
L"Radiobox 4",
};
auto radiobox = Radiobox(&radiobox_entries, &radiobox_selected);
radiobox = Wrap(L"Radiobox", radiobox);
// -- Input ------------------------------------------------------------------
std::wstring input_label;
auto input = Input(&input_label, L"placeholder");
input = Wrap(L"Input", input);
// -- Button -----------------------------------------------------------------
std::wstring button_label = L"Quit";
std::function<void()> on_button_clicked_;
auto button = Button(&button_label, screen.ExitLoopClosure());
button = Wrap(L"Button", button);
// -- Slider -----------------------------------------------------------------
int slider_value_1 = 12;
int slider_value_2 = 56;
int slider_value_3 = 128;
auto sliders = Container::Vertical({
Slider(L"R:", &slider_value_1, 0, 256, 1),
Slider(L"G:", &slider_value_2, 0, 256, 1),
Slider(L"B:", &slider_value_3, 0, 256, 1),
});
sliders = Wrap(L"Slider", sliders);
// -- Layout -----------------------------------------------------------------
auto layout = Container::Vertical({
menu,
toggle,
checkboxes,
radiobox,
input,
sliders,
button,
});
auto component = Renderer(layout, [&] {
return vbox({
menu->Render(),
separator(),
toggle->Render(),
separator(),
checkboxes->Render(),
separator(),
radiobox->Render(),
separator(),
input->Render(),
separator(),
sliders->Render(),
separator(),
button->Render(),
}) |
xflex | size(WIDTH, GREATER_THAN, 40) | border;
});
screen.Loop(component);
return 0;
}

427
examples/component/homescreen.cpp
View File

@ -1,52 +1,50 @@
#include <chrono> // for operator""s, chron...
#include <array> // for array
#include <chrono> // for operator""s, chrono_literals
#include <cmath> // for sin
#include <functional> // for ref, reference_wra...
#include <string> // for allocator, wstring
#include <functional> // for ref, reference_wrapper, function
#include <memory> // for allocator, shared_ptr, __shared_ptr_access
#include <string> // for wstring, basic_string, operator+, to_wstring
#include <thread> // for sleep_for, thread
#include <utility> // for move
#include <vector> // for vector
#include "ftxui/component/checkbox.hpp" // for CheckBox
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/event.hpp" // for Event, Event::Custom
#include "ftxui/component/input.hpp" // for Input
#include "ftxui/component/menu.hpp" // for Menu
#include "ftxui/component/radiobox.hpp" // for RadioBox
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/component/toggle.hpp" // for Toggle
#include "ftxui/dom/elements.hpp" // for text, operator|
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/color.hpp" // for Color, Color::Blue...
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Checkbox, Renderer, Horizontal, Vertical, Input, Menu, Radiobox, Tab, Toggle
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/event.hpp" // for Event, Event::Custom
#include "ftxui/component/input.hpp" // for InputBase
#include "ftxui/component/screen_interactive.hpp" // for Component, ScreenInteractive
#include "ftxui/dom/elements.hpp" // for text, operator|, color, bgcolor, Element, filler, size, vbox, flex, hbox, graph, separator, EQUAL, WIDTH, hcenter, bold, border, window, HEIGHT, Elements, hflow, flex_grow, frame, gauge, LESS_THAN, spinner, dim, GREATER_THAN
#include "ftxui/screen/color.hpp" // for Color, Color::BlueLight, Color::RedLight, Color::Black, Color::Blue, Color::Cyan, Color::CyanLight, Color::GrayDark, Color::GrayLight, Color::Green, Color::GreenLight, Color::Magenta, Color::MagentaLight, Color::Red, Color::White, Color::Yellow, Color::YellowLight, Color::Default
using namespace ftxui;
int shift = 0;
class Graph {
public:
std::vector<int> operator()(int width, int height) {
std::vector<int> output(width);
for (int i = 0; i < width; ++i) {
float v = 0;
v += 0.1f * sin((i + shift) * 0.1f);
v += 0.2f * sin((i + shift + 10) * 0.15f);
v += 0.1f * sin((i + shift) * 0.03f);
v *= height;
v += 0.5f * height;
output[i] = (int)v;
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::Fullscreen();
int shift = 0;
class Graph {
public:
Graph(int* shift) : shift_(shift) {}
std::vector<int> operator()(int width, int height) {
std::vector<int> output(width);
for (int i = 0; i < width; ++i) {
float v = 0;
v += 0.1f * sin((i + *shift_) * 0.1f);
v += 0.2f * sin((i + *shift_ + 10) * 0.15f);
v += 0.1f * sin((i + *shift_) * 0.03f);
v *= height;
v += 0.5f * height;
output[i] = (int)v;
}
return output;
}
return output;
}
};
int* shift_;
};
class HTopComponent : public Component {
Graph my_graph;
public:
HTopComponent() {}
~HTopComponent() override {}
Element Render() override {
Graph my_graph(&shift);
auto htop = Renderer([&] {
auto frequency = vbox({
text(L"Frequency [Mhz]") | hcenter,
hbox({
@ -99,113 +97,140 @@ class HTopComponent : public Component {
ram | flex,
}) |
flex | border;
}
};
});
class CompilerComponent : public Component {
Container container = Container::Horizontal();
RadioBox compiler;
Container flag = Container::Vertical();
CheckBox flag_checkbox[4];
Container subcontainer = Container::Vertical();
Container input_container = Container::Horizontal();
Input input_add;
Menu input;
Input executable;
const std::vector<std::wstring> compiler_entries = {
L"gcc",
L"clang",
L"emcc",
L"game_maker",
L"Ada compilers",
L"ALGOL 60 compilers",
L"ALGOL 68 compilers",
L"Assemblers (Intel *86)",
L"Assemblers (Motorola 68*)",
L"Assemblers (Zilog Z80)",
L"Assemblers (other)",
L"BASIC Compilers",
L"BASIC interpreters",
L"Batch compilers",
L"C compilers",
L"Source-to-source compilers",
L"C++ compilers",
L"C# compilers",
L"COBOL compilers",
L"Common Lisp compilers",
L"D compilers",
L"DIBOL/DBL compilers",
L"ECMAScript interpreters",
L"Eiffel compilers",
L"Fortran compilers",
L"Go compilers",
L"Haskell compilers",
L"Java compilers",
L"Pascal compilers",
L"Perl Interpreters",
L"PHP compilers",
L"PL/I compilers",
L"Python compilers",
L"Scheme compilers and interpreters",
L"Smalltalk compilers",
L"Tcl Interpreters",
L"VMS Interpreters",
L"Rexx Interpreters",
L"CLI compilers",
};
public:
~CompilerComponent() override {}
CompilerComponent() {
Add(&container);
int compiler_selected = 0;
Component compiler = Radiobox(&compiler_entries, &compiler_selected);
// Compiler ----------------------------------------------------------------
compiler.entries = {
L"gcc",
L"clang",
L"emcc",
L"game_maker",
L"Ada compilers",
L"ALGOL 60 compilers",
L"ALGOL 68 compilers",
L"Assemblers (Intel *86)",
L"Assemblers (Motorola 68*)",
L"Assemblers (Zilog Z80)",
L"Assemblers (other)",
L"BASIC Compilers",
L"BASIC interpreters",
L"Batch compilers",
L"C compilers",
L"Source-to-source compilers",
L"C++ compilers",
L"C# compilers",
L"COBOL compilers",
L"Common Lisp compilers",
L"D compilers",
L"DIBOL/DBL compilers",
L"ECMAScript interpreters",
L"Eiffel compilers",
L"Fortran compilers",
L"Go compilers",
L"Haskell compilers",
L"Java compilers",
L"Pascal compilers",
L"Perl Interpreters",
L"PHP compilers",
L"PL/I compilers",
L"Python compilers",
L"Scheme compilers and interpreters",
L"Smalltalk compilers",
L"Tcl Interpreters",
L"VMS Interpreters",
L"Rexx Interpreters",
L"CLI compilers",
};
container.Add(&compiler);
std::array<std::wstring, 4> options_label = {
L"-Wall",
L"-Werror",
L"-lpthread",
L"-O3",
};
std::array<bool, 4> options_state = {
false,
false,
false,
false,
};
std::wstring input_add_content;
Component input_add = Input(&input_add_content, "input files");
// Flags ----------------------------------------------------------------
container.Add(&flag);
flag_checkbox[0].label = L"-Wall";
flag_checkbox[1].label = L"-Werror";
flag_checkbox[2].label = L"-lpthread";
flag_checkbox[3].label = L"-O3";
for (auto& c : flag_checkbox)
flag.Add(&c);
std::vector<std::wstring> input_entries;
int input_selected = 0;
Component input = Menu(&input_entries, &input_selected);
container.Add(&subcontainer);
std::wstring executable_content_ = L"";
Component executable_ = Input(&executable_content_, "executable");
Component flags = Container::Vertical({
Checkbox(&options_label[0], &options_state[0]),
Checkbox(&options_label[1], &options_state[1]),
Checkbox(&options_label[2], &options_state[2]),
Checkbox(&options_label[3], &options_state[3]),
});
auto compiler_component = Container::Horizontal({
compiler,
flags,
Container::Vertical({
executable_,
Container::Horizontal({
input_add,
input,
}),
}),
});
InputBase::From(input_add)->on_enter = [&] {
input_entries.push_back(input_add_content);
input_add_content = L"";
};
auto render_command = [&] {
Elements line;
// Compiler
line.push_back(text(compiler_entries[compiler_selected]) | bold);
// flags
for (int i = 0; i < 4; ++i) {
if (options_state[i]) {
line.push_back(text(L" "));
line.push_back(text(options_label[i]) | dim);
}
}
// Executable
// ----------------------------------------------------------------
executable.placeholder = L"executable";
subcontainer.Add(&executable);
if (!executable_content_.empty()) {
line.push_back(text(L" -O ") | bold);
line.push_back(text(executable_content_) | color(Color::BlueLight) |
bold);
}
// Input
for (auto& it : input_entries) {
line.push_back(text(L" " + it) | color(Color::RedLight));
}
return line;
};
// Input ----------------------------------------------------------------
subcontainer.Add(&input_container);
input_add.placeholder = L"input files";
input_add.on_enter = [this] {
input.entries.push_back(input_add.content);
input_add.content = L"";
};
input_container.Add(&input_add);
input_container.Add(&input);
}
Element Render() override {
auto compiler_win = window(text(L"Compiler"), compiler.Render() | frame);
auto flags_win = window(text(L"Flags"), flag.Render());
auto executable_win = window(text(L"Executable:"), executable.Render());
auto compiler_renderer = Renderer(compiler_component, [&] {
auto compiler_win = window(text(L"Compiler"), compiler->Render() | frame);
auto flags_win = window(text(L"Flags"), flags->Render());
auto executable_win = window(text(L"Executable:"), executable_->Render());
auto input_win =
window(text(L"Input"),
hbox({
vbox({
hbox({
text(L"Add: "),
input_add.Render(),
input_add->Render(),
}) | size(WIDTH, EQUAL, 20) |
size(HEIGHT, EQUAL, 1),
filler(),
}),
separator(),
input.Render() | frame | size(HEIGHT, EQUAL, 3) | flex,
input->Render() | frame | size(HEIGHT, EQUAL, 3) | flex,
}));
return vbox({
hbox({
@ -217,49 +242,21 @@ class CompilerComponent : public Component {
}),
filler(),
}),
hflow(RenderCommandLine()) | flex_grow,
hflow(render_command()) | flex_grow,
}) |
flex_grow | border;
}
});
Elements RenderCommandLine() {
Elements line;
// Compiler
line.push_back(text(compiler.entries[compiler.selected]) | bold);
// flags
for (auto& it : flag_checkbox) {
if (it.state) {
line.push_back(text(L" "));
line.push_back(text(it.label) | dim);
}
}
// Executable
if (!executable.content.empty()) {
line.push_back(text(L" -O ") | bold);
line.push_back(text(executable.content) | color(Color::BlueLight) | bold);
}
// Input
for (auto& it : input.entries) {
line.push_back(text(L" " + it) | color(Color::RedLight));
}
return line;
}
};
class SpinnerComponent : public Component {
Element Render() override {
auto spinner_tab_renderer = Renderer([&] {
Elements entries;
for (int i = 0; i < 22; ++i) {
if (i != 0)
entries.push_back(spinner(i, shift / 2) | bold |
size(WIDTH, GREATER_THAN, 2) | border);
entries.push_back(spinner(i, shift / 2) | bold |
size(WIDTH, GREATER_THAN, 2) | border);
}
return hflow(std::move(entries)) | border;
}
};
});
class ColorComponent : public Component {
Element Render() override {
auto color_tab_renderer = Renderer([] {
return hbox({
vbox({
color(Color::Default, text(L"Default")),
@ -301,82 +298,67 @@ class ColorComponent : public Component {
}),
}) |
hcenter | border;
}
};
});
class GaugeComponent : public Component {
Element RenderGauge(int delta) {
auto render_gauge = [&shift](int delta) {
float progress = (shift + delta) % 1000 / 1000.f;
return hbox({
text(std::to_wstring(int(progress * 100)) + L"% ") |
size(WIDTH, EQUAL, 5),
gauge(progress),
});
}
Element Render() override {
};
auto gauge_component = Renderer([render_gauge] {
return vbox({
RenderGauge(0) | color(Color::Black),
RenderGauge(100) | color(Color::GrayDark),
RenderGauge(50) | color(Color::GrayLight),
RenderGauge(6894) | color(Color::White),
render_gauge(0) | color(Color::Black),
render_gauge(100) | color(Color::GrayDark),
render_gauge(50) | color(Color::GrayLight),
render_gauge(6894) | color(Color::White),
separator(),
RenderGauge(6841) | color(Color::Blue),
RenderGauge(9813) | color(Color::BlueLight),
RenderGauge(98765) | color(Color::Cyan),
RenderGauge(98) | color(Color::CyanLight),
RenderGauge(9846) | color(Color::Green),
RenderGauge(1122) | color(Color::GreenLight),
RenderGauge(84) | color(Color::Magenta),
RenderGauge(645) | color(Color::MagentaLight),
RenderGauge(568) | color(Color::Red),
RenderGauge(2222) | color(Color::RedLight),
RenderGauge(220) | color(Color::Yellow),
RenderGauge(348) | color(Color::YellowLight),
render_gauge(6841) | color(Color::Blue),
render_gauge(9813) | color(Color::BlueLight),
render_gauge(98765) | color(Color::Cyan),
render_gauge(98) | color(Color::CyanLight),
render_gauge(9846) | color(Color::Green),
render_gauge(1122) | color(Color::GreenLight),
render_gauge(84) | color(Color::Magenta),
render_gauge(645) | color(Color::MagentaLight),
render_gauge(568) | color(Color::Red),
render_gauge(2222) | color(Color::RedLight),
render_gauge(220) | color(Color::Yellow),
render_gauge(348) | color(Color::YellowLight),
}) |
border;
});
int tab_index = 0;
std::vector<std::wstring> tab_entries = {
L"htop", L"color", L"spinner", L"gauge", L"compiler",
};
};
auto tab_selection = Toggle(&tab_entries, &tab_index);
auto tab_content = Container::Tab(&tab_index, {
htop,
color_tab_renderer,
spinner_tab_renderer,
gauge_component,
compiler_renderer,
});
class Tab : public Component {
public:
Container main_container = Container::Vertical();
auto main_container = Container::Vertical({
tab_selection,
tab_content,
});
Toggle tab_selection;
Container container = Container::Tab(&tab_selection.selected);
HTopComponent htop_component;
ColorComponent color_component;
SpinnerComponent spinner_component;
GaugeComponent gauge_component;
CompilerComponent compiler_component;
Tab() {
Add(&main_container);
main_container.Add(&tab_selection);
tab_selection.entries = {
L"htop", L"color", L"spinner", L"gauge", L"compiler",
};
main_container.Add(&container);
container.Add(&htop_component);
container.Add(&color_component);
container.Add(&spinner_component);
container.Add(&gauge_component);
container.Add(&compiler_component);
}
Element Render() override {
auto main_renderer = Renderer(main_container, [&] {
return vbox({
text(L"FTXUI Demo") | bold | hcenter,
tab_selection.Render() | hcenter,
container.Render() | flex,
tab_selection->Render() | hcenter,
tab_content->Render() | flex,
});
}
};
});
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::Fullscreen();
std::thread update([&screen]() {
std::thread update([&screen, &shift]() {
for (;;) {
using namespace std::chrono_literals;
std::this_thread::sleep_for(0.05s);
@ -385,8 +367,7 @@ int main(int argc, const char* argv[]) {
}
});
Tab tab;
screen.Loop(&tab);
screen.Loop(main_renderer);
return 0;
}

68
examples/component/input.cpp
View File

@ -1,44 +1,38 @@
#include "ftxui/component/input.hpp"
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include <memory> // for allocator, __shared_ptr_access
#include <string> // for operator+, char_traits, wstring
using namespace ftxui;
class MyComponent : public Component {
public:
MyComponent() {
Add(&container);
container.Add(&input_1);
container.Add(&input_2);
container.Add(&input_3);
input_1.placeholder = L"input1";
input_2.placeholder = L"input2";
input_3.placeholder = L"input3";
}
std::function<void()> on_enter = []() {};
private:
Container container = Container::Vertical();
Input input_1;
Input input_2;
Input input_3;
Element Render() override {
return border(vbox({
hbox({text(L" input_1 : "), input_1.Render()}),
hbox({text(L" input_2 : "), input_2.Render()}),
hbox({text(L" input_3 : "), input_3.Render()}),
}));
}
};
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Input, Renderer, Vertical
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for Component, ScreenInteractive
#include "ftxui/dom/elements.hpp" // for text, hbox, Element, separator, operator|, vbox, border
int main(int argc, const char* argv[]) {
using namespace ftxui;
std::wstring first_name_;
std::wstring last_name_;
Component input_first_name_ = Input(&first_name_, "first name");
Component input_last_name_ = Input(&last_name_, "last name");
auto component = Container::Vertical({
input_first_name_,
input_last_name_,
});
auto renderer = Renderer(component, [&] {
return vbox({
text(L"Hello " + first_name_ + L" " + last_name_),
separator(),
hbox({text(L" First name : "), input_first_name_->Render()}),
hbox({text(L" Last name : "), input_last_name_->Render()}),
}) |
border;
});
auto screen = ScreenInteractive::TerminalOutput();
MyComponent component;
component.on_enter = screen.ExitLoopClosure();
screen.Loop(&component);
screen.Loop(renderer);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

28
examples/component/menu.cpp
View File

@ -1,24 +1,30 @@
#include <functional> // for function
#include <iostream> // for basic_ostream::ope...
#include <string> // for wstring, allocator
#include <vector> // for vector
#include <iostream> // for basic_ostream::operator<<, operator<<, endl, basic_ostream, basic_ostream<>::__ostream_type, cout, ostream
#include <string> // for wstring, allocator, basic_string
#include <vector> // for vector
#include "ftxui/component/menu.hpp" // for Menu
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Menu
#include "ftxui/component/menu.hpp" // for MenuBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/screen/box.hpp" // for ftxui
int main(int argc, const char* argv[]) {
using namespace ftxui;
auto screen = ScreenInteractive::TerminalOutput();
Menu menu;
menu.entries = {L"entry 1", L"entry 2", L"entry 3"};
menu.selected = 0;
menu.on_enter = screen.ExitLoopClosure();
std::vector<std::wstring> entries = {
L"entry 1",
L"entry 2",
L"entry 3",
};
int selected = 0;
screen.Loop(&menu);
auto menu = Menu(&entries, &selected);
MenuBase::From(menu)->on_enter = screen.ExitLoopClosure();
std::cout << "Selected element = " << menu.selected << std::endl;
screen.Loop(menu);
std::cout << "Selected element = " << selected << std::endl;
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

143
examples/component/menu2.cpp
View File

@ -1,84 +1,77 @@
#include <functional> // for function
#include <string> // for wstring, allocator
#include <memory> // for allocator, __shared_ptr_access
#include <string> // for wstring, operator+, to_string, basic_string
#include <vector> // for vector
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/menu.hpp" // for Menu
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/dom/elements.hpp" // for text, separator, bold
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/string.hpp" // for to_wstring
using namespace ftxui;
class MyComponent : public Component {
public:
MyComponent() {
Add(&container);
container.Add(&left_menu);
container.Add(&right_menu);
left_menu.entries = {
L"0%", L"10%", L"20%", L"30%", L"40%",
L"50%", L"60%", L"70%", L"80%", L"90%",
};
right_menu.entries = {
L"0%", L"1%", L"2%", L"3%", L"4%", L"5%",
L"6%", L"7%", L"8%", L"9%", L"10%",
};
left_menu.on_enter = [this]() { on_enter(); };
right_menu.on_enter = [this]() { on_enter(); };
}
std::function<void()> on_enter = []() {};
private:
Container container = Container::Horizontal();
Menu left_menu;
Menu right_menu;
Element Render() override {
int sum = left_menu.selected * 10 + right_menu.selected;
return border(vbox({
// -------- Top panel --------------
hbox({
// -------- Left Menu --------------
vbox({
hcenter(bold(text(L"Percentage by 10%"))),
separator(),
left_menu.Render(),
}) | flex,
// -------- Right Menu --------------
vbox({
hcenter(bold(text(L"Percentage by 1%"))),
separator(),
right_menu.Render(),
}) | flex,
filler(),
}),
separator(),
// -------- Bottom panel --------------
vbox({
hbox({
text(L" gauge : "),
gauge(sum / 100.0),
}),
hbox({
text(L" text : "),
text(to_wstring(std::to_string(sum) + " %")),
}),
}) | flex,
}));
}
};
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Menu, Horizontal, Renderer
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/menu.hpp" // for MenuBase
#include "ftxui/component/screen_interactive.hpp" // for Component, ScreenInteractive
#include "ftxui/dom/elements.hpp" // for text, separator, bold, hcenter, vbox, hbox, gauge, Element, operator|, border
#include "ftxui/screen/string.hpp" // for to_wstring
int main(int argc, const char* argv[]) {
using namespace ftxui;
std::vector<std::wstring> left_menu_entries = {
L"0%", L"10%", L"20%", L"30%", L"40%",
L"50%", L"60%", L"70%", L"80%", L"90%",
};
std::vector<std::wstring> right_menu_entries = {
L"0%", L"1%", L"2%", L"3%", L"4%", L"5%",
L"6%", L"7%", L"8%", L"9%", L"10%",
};
int left_menu_selected = 0;
int right_menu_selected = 0;
Component left_menu_ = Menu(&left_menu_entries, &left_menu_selected);
Component right_menu_ = Menu(&right_menu_entries, &right_menu_selected);
Component container = Container::Horizontal({
left_menu_,
right_menu_,
});
auto renderer = Renderer(container, [&] {
int sum = left_menu_selected * 10 + right_menu_selected;
return vbox({
// -------- Top panel --------------
hbox({
// -------- Left Menu --------------
vbox({
hcenter(bold(text(L"Percentage by 10%"))),
separator(),
left_menu_->Render(),
}),
separator(),
// -------- Right Menu --------------
vbox({
hcenter(bold(text(L"Percentage by 1%"))),
separator(),
right_menu_->Render(),
}),
separator(),
}),
separator(),
// -------- Bottom panel --------------
vbox({
hbox({
text(L" gauge : "),
gauge(sum / 100.0),
}),
hbox({
text(L" text : "),
text(to_wstring(std::to_string(sum) + " %")),
}),
}),
}) |
border;
});
auto screen = ScreenInteractive::TerminalOutput();
MyComponent component;
component.on_enter = screen.ExitLoopClosure();
screen.Loop(&component);
MenuBase::From(left_menu_)->on_enter = screen.ExitLoopClosure();
MenuBase::From(right_menu_)->on_enter = screen.ExitLoopClosure();
screen.Loop(renderer);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

155
examples/component/menu_style.cpp
View File

@ -1,92 +1,83 @@
#include <functional> // for function
#include <initializer_list> // for initializer_list
#include <string> // for wstring, allocator
#include <memory> // for __shared_ptr_access, shared_ptr, allocator
#include <string> // for wstring, basic_string
#include <vector> // for vector
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/menu.hpp" // for Menu
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/dom/elements.hpp" // for operator|, Element
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/color.hpp" // for Color, Color::Blue
using namespace ftxui;
class MyComponent : public Component {
public:
MyComponent() {
Add(&container);
for (Menu* menu : {
&menu_1,
&menu_2,
&menu_3,
&menu_4,
&menu_5,
&menu_6,
}) {
container.Add(menu);
menu->entries = {
L"Monkey", L"Dog", L"Cat", L"Bird", L"Elephant",
};
menu->on_enter = [this]() { on_enter(); };
}
menu_2.focused_style = bold | color(Color::Blue);
menu_2.selected_style = color(Color::Blue);
menu_2.selected_focused_style = bold | color(Color::Blue);
menu_3.selected_style = color(Color::Blue);
menu_3.focused_style = bgcolor(Color::Blue);
menu_3.selected_focused_style = bgcolor(Color::Blue);
menu_4.selected_style = bgcolor(Color::Blue);
menu_4.focused_style = bgcolor(Color::BlueLight);
menu_4.selected_focused_style = bgcolor(Color::BlueLight);
menu_5.normal_style = bgcolor(Color::Blue);
menu_5.selected_style = bgcolor(Color::Yellow);
menu_5.focused_style = bgcolor(Color::Red);
menu_5.selected_focused_style = bgcolor(Color::Red);
menu_6.normal_style = dim | color(Color::Blue);
menu_6.selected_style = color(Color::Blue);
menu_6.focused_style = bold | color(Color::Blue);
menu_6.selected_focused_style = bold | color(Color::Blue);
}
std::function<void()> on_enter = []() {};
private:
Container container = Container::Horizontal();
Menu menu_1;
Menu menu_2;
Menu menu_3;
Menu menu_4;
Menu menu_5;
Menu menu_6;
// clang-format off
Element Render() override {
return
hbox({
menu_1.Render() | flex, separator(),
menu_2.Render() | flex, separator(),
menu_3.Render() | flex, separator(),
menu_4.Render() | flex, separator(),
menu_5.Render() | flex, separator(),
menu_6.Render() | flex,
}) | border;
}
// clang-format on
};
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Menu, Horizontal, Renderer
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/menu.hpp" // for MenuBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive, Component
#include "ftxui/dom/elements.hpp" // for operator|, Element, separator, bgcolor, color, flex, Decorator, bold, hbox, border, dim
#include "ftxui/screen/color.hpp" // for Color, Color::Blue, Color::BlueLight, Color::Red, Color::Yellow
int main(int argc, const char* argv[]) {
using namespace ftxui;
std::vector<std::wstring> entries = {
L"Monkey", L"Dog", L"Cat", L"Bird", L"Elephant",
};
int menu_1_selected_ = 0;
int menu_2_selected_ = 0;
int menu_3_selected_ = 0;
int menu_4_selected_ = 0;
int menu_5_selected_ = 0;
int menu_6_selected_ = 0;
auto menu_1_ = Menu(&entries, &menu_1_selected_);
auto menu_2_ = Menu(&entries, &menu_2_selected_);
auto menu_3_ = Menu(&entries, &menu_3_selected_);
auto menu_4_ = Menu(&entries, &menu_4_selected_);
auto menu_5_ = Menu(&entries, &menu_5_selected_);
auto menu_6_ = Menu(&entries, &menu_6_selected_);
auto container = Container::Horizontal({
menu_1_,
menu_2_,
menu_3_,
menu_4_,
menu_5_,
menu_6_,
});
// clang-format off
auto renderer = Renderer(container, [&] {
return
hbox({
menu_1_->Render() | flex, separator(),
menu_2_->Render() | flex, separator(),
menu_3_->Render() | flex, separator(),
menu_4_->Render() | flex, separator(),
menu_5_->Render() | flex, separator(),
menu_6_->Render() | flex,
}) | border;
});
// clang-format on
auto screen = ScreenInteractive::TerminalOutput();
MyComponent component;
component.on_enter = screen.ExitLoopClosure();
screen.Loop(&component);
for (Component menu : {menu_1_, menu_2_, menu_3_, menu_4_, menu_5_, menu_6_})
MenuBase::From(menu)->on_enter = screen.ExitLoopClosure();
MenuBase::From(menu_2_)->focused_style = bold | color(Color::Blue);
MenuBase::From(menu_2_)->selected_style = color(Color::Blue);
MenuBase::From(menu_2_)->selected_focused_style = bold | color(Color::Blue);
MenuBase::From(menu_3_)->selected_style = color(Color::Blue);
MenuBase::From(menu_3_)->focused_style = bgcolor(Color::Blue);
MenuBase::From(menu_3_)->selected_focused_style = bgcolor(Color::Blue);
MenuBase::From(menu_4_)->selected_style = bgcolor(Color::Blue);
MenuBase::From(menu_4_)->focused_style = bgcolor(Color::BlueLight);
MenuBase::From(menu_4_)->selected_focused_style = bgcolor(Color::BlueLight);
MenuBase::From(menu_5_)->normal_style = bgcolor(Color::Blue);
MenuBase::From(menu_5_)->selected_style = bgcolor(Color::Yellow);
MenuBase::From(menu_5_)->focused_style = bgcolor(Color::Red);
MenuBase::From(menu_5_)->selected_focused_style = bgcolor(Color::Red);
MenuBase::From(menu_6_)->normal_style = dim | color(Color::Blue);
MenuBase::From(menu_6_)->selected_style = color(Color::Blue);
MenuBase::From(menu_6_)->focused_style = bold | color(Color::Blue);
MenuBase::From(menu_6_)->selected_focused_style = bold | color(Color::Blue);
screen.Loop(renderer);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

169
examples/component/modal_dialog.cpp
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@ -1,132 +1,89 @@
#include <functional> // for function
#include <memory> // for allocator_traits<>...
#include <string> // for operator+, wstring
#include <vector> // for vector
#include <memory> // for allocator, __shared_ptr_access, shared_ptr
#include <string> // for wstring, operator+, basic_string, char_traits
#include <vector> // for vector
#include "ftxui/component/button.hpp" // for Button
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Button, Renderer, Horizontal, Tab
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/dom/elements.hpp" // for Element, operator|
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/dom/elements.hpp" // for Element, operator|, filler, text, hbox, separator, center, vbox, bold, border, clear_under, dbox, size, GREATER_THAN, HEIGHT
using namespace ftxui;
int main(int argc, const char* argv[]) {
using namespace ftxui;
auto screen = ScreenInteractive::TerminalOutput();
// The main screen, at depth 0. It display the main content.
class Content : public Component {
public:
std::function<void()> on_rate_ftxui = [] {};
std::function<void()> on_quit = [] {};
std::wstring rating_ = L"3/5 stars";
Content() {
Add(&container_);
container_.Add(&button_rate_ftxui);
container_.Add(&button_quit_);
button_rate_ftxui.on_click = [&] { on_rate_ftxui(); };
button_quit_.on_click = [&] { on_quit(); };
}
// There are two layers. One at depth = 0 and the modal window at depth = 1;
int depth = 0;
Element Render() final {
auto button_elements = hbox({
button_rate_ftxui.Render(),
filler(),
button_quit_.Render(),
});
// The current rating of FTXUI.
std::wstring rating = L"3/5 stars";
auto document = //
vbox({
text(L"Modal dialog example"),
separator(),
text(L"☆☆☆ FTXUI:" + rating_ + L" ☆☆☆") | bold,
filler(),
button_elements,
}) |
border;
// At depth=0, two buttons. One for rating FTXUI and one for quitting.
auto button_rate_ftxui = Button("Rate FTXUI", [&] { depth = 1; });
auto button_quit = Button("Quit", screen.ExitLoopClosure());
return document | size(HEIGHT, GREATER_THAN, 18) | center;
}
auto depth_0_container = Container::Horizontal({
button_rate_ftxui,
button_quit,
});
auto depth_0_renderer = Renderer(depth_0_container, [&] {
return vbox({
text(L"Modal dialog example"),
separator(),
text(L"☆☆☆ FTXUI:" + rating + L" ☆☆☆") | bold,
filler(),
hbox({
button_rate_ftxui->Render(),
filler(),
button_quit->Render(),
}),
}) |
border | size(HEIGHT, GREATER_THAN, 18) | center;
});
private:
Container container_ = Container::Horizontal();
Button button_rate_ftxui = Button(L"Rate FTXUI");
Button button_quit_ = Button(L"Quit");
};
// At depth=1, The "modal" window.
std::vector<std::wstring> rating_labels = {
L"1/5 stars", L"2/5 stars", L"3/5 stars", L"4/5 stars", L"5/5 stars",
};
auto on_rating = [&](std::wstring new_rating) {
rating = new_rating;
depth = 0;
};
auto depth_1_container = Container::Horizontal({
Button(&rating_labels[0], [&] { on_rating(rating_labels[0]); }),
Button(&rating_labels[1], [&] { on_rating(rating_labels[1]); }),
Button(&rating_labels[2], [&] { on_rating(rating_labels[2]); }),
Button(&rating_labels[3], [&] { on_rating(rating_labels[3]); }),
Button(&rating_labels[4], [&] { on_rating(rating_labels[4]); }),
});
// The "modal" screen, at depth 1. It display the modal dialog.
class Modal : public Component {
public:
std::function<void(std::wstring)> on_click;
Modal() {
Add(&container_);
buttons_.resize(5);
for (int i = 0; i < 5; ++i) {
std::wstring stars = std::to_wstring(i + 1) + L"/5 stars";
buttons_[i] = Button(stars);
buttons_[i].on_click = [&, stars] { on_click(stars); };
container_.Add(&buttons_[i]);
}
}
Element Render() final {
auto depth_1_renderer = Renderer(depth_1_container, [&] {
return vbox({
text(L"Do you like FTXUI?"),
separator(),
hbox({
buttons_[0].Render(),
buttons_[1].Render(),
buttons_[2].Render(),
buttons_[3].Render(),
buttons_[4].Render(),
}),
hbox(depth_1_container->Render()),
}) |
border;
}
});
private:
Container container_ = Container::Horizontal();
std::vector<Button> buttons_;
};
auto main_container = Container::Tab(&depth, {
depth_0_renderer,
depth_1_renderer,
});
class MyComponent : public Component {
public:
std::function<void()> on_quit = [] {};
auto main_renderer = Renderer(main_container, [&] {
Element document = depth_0_renderer->Render();
MyComponent() {
Add(&container_);
container_.Add(&content_);
container_.Add(&modal_);
content_.on_quit = [&] { on_quit(); };
content_.on_rate_ftxui = [&] { modal_.TakeFocus(); };
modal_.on_click = [&](std::wstring rating) {
content_.rating_ = rating;
content_.TakeFocus();
};
}
Element Render() final {
Element document = content_.Render();
if (modal_.Focused()) {
if (depth == 1) {
document = dbox({
document,
modal_.Render() | clear_under | center,
depth_1_renderer->Render() | clear_under | center,
});
}
return document;
}
});
private:
Container container_ = Container::Tab(nullptr);
Content content_;
Modal modal_;
};
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::TerminalOutput();
MyComponent my_component;
my_component.on_quit = screen.ExitLoopClosure();
screen.Loop(&my_component);
screen.Loop(main_renderer);
return 0;
}

15
examples/component/radiobox.cpp
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@ -1,18 +1,23 @@
#include "ftxui/component/radiobox.hpp"
#include <string> // for wstring, allocator, basic_string
#include <vector> // for vector
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Radiobox
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
using namespace ftxui;
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::TerminalOutput();
RadioBox radiobox;
radiobox.entries = {
std::vector<std::wstring> radiobox_list = {
L"Use gcc",
L"Use clang",
L"Use emscripten",
L"Use tcc",
};
screen.Loop(&radiobox);
int selected = 0;
auto screen = ScreenInteractive::TerminalOutput();
screen.Loop(Radiobox(&radiobox_list, &selected));
return 0;
}

40
examples/component/radiobox_in_frame.cpp
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@ -1,35 +1,29 @@
#include <memory> // for __shared_ptr_access, shared_ptr
#include <string> // for wstring, operator+
#include <vector> // for vector
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/radiobox.hpp" // for RadioBox
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Radiobox, Renderer
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/dom/elements.hpp" // for Element, operator|
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/string.hpp" // for to_wstring
#include "ftxui/dom/elements.hpp" // for Element, operator|, size, border, frame, HEIGHT, LESS_THAN
#include "ftxui/screen/string.hpp" // for to_wstring
using namespace ftxui;
class MyComponent : public Component {
RadioBox radiobox;
public:
MyComponent() {
for (int i = 0; i < 30; ++i) {
radiobox.entries.push_back(L"RadioBox " + to_wstring(i));
}
Add(&radiobox);
}
Element Render() override {
return radiobox.Render() | frame | size(HEIGHT, LESS_THAN, 10) | border;
}
};
int main(int argc, const char* argv[]) {
std::vector<std::wstring> entries;
int selected = 0;
for (int i = 0; i < 30; ++i)
entries.push_back(L"RadioBox " + to_wstring(i));
auto radiobox = Radiobox(&entries, &selected);
auto renderer = Renderer(radiobox, [&] {
return radiobox->Render() | frame | size(HEIGHT, LESS_THAN, 10) | border;
});
auto screen = ScreenInteractive::FitComponent();
MyComponent component;
screen.Loop(&component);
screen.Loop(renderer);
return 0;
}

78
examples/component/slider.cpp
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@ -1,82 +1,14 @@
#include <functional> // for function
#include <memory> // for allocator, unique_ptr
#include <string> // for operator+, to_wstring
#include "ftxui/component/component.hpp" // for Component, Compone...
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/event.hpp" // for Event, Event::Escape
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Slider
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/component/slider.hpp" // for Slider
#include "ftxui/dom/elements.hpp" // for separator, operator|
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/color.hpp" // for Color
using namespace ftxui;
Element ColorTile(int red, int green, int blue) {
return text(L"") | size(WIDTH, GREATER_THAN, 14) |
size(HEIGHT, GREATER_THAN, 7) | bgcolor(Color::RGB(red, green, blue));
}
Element ColorString(int red, int green, int blue) {
return text(L"RGB = (" + //
std::to_wstring(red) + L"," + //
std::to_wstring(green) + L"," + //
std::to_wstring(blue) + L")" //
);
}
class MyComponent : public Component {
public:
MyComponent(int* red, int* green, int* blue, std::function<void(void)> quit)
: red_(red), green_(green), blue_(blue), quit_(quit) {
Add(&container_);
container_.Add(slider_red_.get());
container_.Add(slider_green_.get());
container_.Add(slider_blue_.get());
}
Element Render() {
return hbox({
ColorTile(*red_, *green_, *blue_),
separator(),
vbox({
slider_red_->Render(),
separator(),
slider_green_->Render(),
separator(),
slider_blue_->Render(),
separator(),
ColorString(*red_, *green_, *blue_),
}) | xflex,
}) |
border | size(WIDTH, LESS_THAN, 80);
}
bool OnEvent(Event event) {
if (event == Event::Return || event == Event::Escape)
quit_();
return Component::OnEvent(event);
}
private:
int* red_;
int* green_;
int* blue_;
Container container_ = Container::Vertical();
ComponentPtr slider_red_ = Slider(L"Red :", red_, 0, 255, 1);
ComponentPtr slider_green_ = Slider(L"Green:", green_, 0, 255, 1);
ComponentPtr slider_blue_ = Slider(L"Blue :", blue_, 0, 255, 1);
std::function<void(void)> quit_;
};
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::TerminalOutput();
int red = 128;
int green = 25;
int blue = 100;
auto component = MyComponent(&red, &green, &blue, screen.ExitLoopClosure());
screen.Loop(&component);
int value = 50;
auto slider = Slider(L"Value:", &value, 0, 100, 1);
screen.Loop(slider);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

62
examples/component/slider_rgb.cpp Normal file
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@ -0,0 +1,62 @@
#include <memory> // for allocator, __shared_ptr_access, shared_ptr
#include <string> // for operator+, to_wstring, char_traits
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Slider, Renderer, Vertical
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/dom/elements.hpp" // for separator, Element, operator|, size, text, vbox, xflex, bgcolor, hbox, GREATER_THAN, WIDTH, border, HEIGHT, LESS_THAN
#include "ftxui/screen/color.hpp" // for Color
using namespace ftxui;
Element ColorTile(int red, int green, int blue) {
return text(L"") | size(WIDTH, GREATER_THAN, 14) |
size(HEIGHT, GREATER_THAN, 7) | bgcolor(Color::RGB(red, green, blue));
}
Element ColorString(int red, int green, int blue) {
return text(L"RGB = (" + //
std::to_wstring(red) + L"," + //
std::to_wstring(green) + L"," + //
std::to_wstring(blue) + L")" //
);
}
int main(int argc, const char* argv[]) {
int red = 128;
int green = 25;
int blue = 100;
auto slider_red = Slider(L"Red :", &red, 0, 255, 1);
auto slider_green = Slider(L"Green:", &green, 0, 255, 1);
auto slider_blue = Slider(L"Blue :", &blue, 0, 255, 1);
auto container = Container::Vertical({
slider_red,
slider_green,
slider_blue,
});
auto renderer = Renderer(container, [&] {
return hbox({
ColorTile(red, green, blue),
separator(),
vbox({
slider_red->Render(),
separator(),
slider_green->Render(),
separator(),
slider_blue->Render(),
separator(),
ColorString(red, green, blue),
}) | xflex,
}) |
border | size(WIDTH, LESS_THAN, 80);
});
auto screen = ScreenInteractive::TerminalOutput();
screen.Loop(renderer);
}
// 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.

119
examples/component/tab_horizontal.cpp
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@ -1,71 +1,68 @@
#include <functional> // for function
#include <string> // for wstring, allocator
#include <vector> // for vector
#include <memory> // for allocator, __shared_ptr_access, shared_ptr
#include <string> // for wstring, basic_string
#include <vector> // for vector
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/radiobox.hpp" // for RadioBox
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Radiobox, Renderer, Tab, Toggle, Vertical
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/component/toggle.hpp" // for Toggle
#include "ftxui/dom/elements.hpp" // for Element, operator|
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/dom/elements.hpp" // for Element, separator, operator|, vbox, border
using namespace ftxui;
class MyComponent : public Component {
public:
MyComponent() {
Add(&container_);
container_.Add(&toggle_);
toggle_.entries = {
L"tab_1",
L"tab_2",
L"tab_3",
};
container_.Add(&tab_container_);
radiobox_1_.entries = {L"Forest", L"Water", L"I don't know"};
tab_container_.Add(&radiobox_1_);
radiobox_2_.entries = {
L"Hello",
L"Hi",
L"Hay",
};
tab_container_.Add(&radiobox_2_);
radiobox_3_.entries = {
L"Table",
L"Nothing",
L"Is",
L"Empty",
};
tab_container_.Add(&radiobox_3_);
}
std::function<void()> on_enter = []() {};
Element Render() {
return vbox(toggle_.Render(), separator(), tab_container_.Render()) |
border;
}
private:
Toggle toggle_;
Container container_ = Container::Vertical();
Container tab_container_ = Container::Tab(&(toggle_.selected));
RadioBox radiobox_1_;
RadioBox radiobox_2_;
RadioBox radiobox_3_;
};
int main(int argc, const char* argv[]) {
std::vector<std::wstring> tab_values{
L"tab_1",
L"tab_2",
L"tab_3",
};
int tab_selected = 0;
auto tab_toggle = Toggle(&tab_values, &tab_selected);
std::vector<std::wstring> tab_1_entries{
L"Forest",
L"Water",
L"I don't know",
};
int tab_1_selected = 0;
std::vector<std::wstring> tab_2_entries{
L"Hello",
L"Hi",
L"Hay",
};
int tab_2_selected = 0;
std::vector<std::wstring> tab_3_entries{
L"Table",
L"Nothing",
L"Is",
L"Empty",
};
int tab_3_selected = 0;
auto tab_container = Container::Tab(
&tab_selected, {
Radiobox(&tab_1_entries, &tab_1_selected),
Radiobox(&tab_2_entries, &tab_2_selected),
Radiobox(&tab_3_entries, &tab_3_selected),
});
auto container = Container::Vertical({
tab_toggle,
tab_container,
});
auto renderer = Renderer(container, [&] {
return vbox({
tab_toggle->Render(),
separator(),
tab_container->Render(),
}) |
border;
});
auto screen = ScreenInteractive::TerminalOutput();
MyComponent component;
component.on_enter = screen.ExitLoopClosure();
screen.Loop(&component);
screen.Loop(renderer);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

112
examples/component/tab_vertical.cpp
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@ -1,64 +1,68 @@
#include <functional> // for function
#include <string> // for wstring, allocator
#include <vector> // for vector
#include <memory> // for allocator, __shared_ptr_access, shared_ptr
#include <string> // for wstring, basic_string
#include <vector> // for vector
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/menu.hpp" // for Menu
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Radiobox, Horizontal, Menu, Renderer, Tab
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/dom/elements.hpp" // for Element, separator, hbox, operator|, border
using namespace ftxui;
class MyComponent : public Component {
public:
MyComponent() {
Add(&container_);
container_.Add(&menu_);
menu_.entries = {
L"menu_1",
L"menu_2",
L"menu_3",
};
container_.Add(&tab_container_);
menu_1_.entries = {L"Forest", L"Water", L"I don't know"};
tab_container_.Add(&menu_1_);
menu_2_.entries = {
L"Hello",
L"Hi",
L"Hay",
};
tab_container_.Add(&menu_2_);
menu_3_.entries = {
L"Table",
L"Nothing",
L"Is",
L"Empty",
};
tab_container_.Add(&menu_3_);
}
std::function<void()> on_enter = []() {};
private:
Menu menu_;
Container container_ = Container::Horizontal();
Container tab_container_ = Container::Tab(&(menu_.selected));
Menu menu_1_;
Menu menu_2_;
Menu menu_3_;
};
int main(int argc, const char* argv[]) {
std::vector<std::wstring> tab_values{
L"tab_1",
L"tab_2",
L"tab_3",
};
int tab_selected = 0;
auto tab_menu = Menu(&tab_values, &tab_selected);
std::vector<std::wstring> tab_1_entries{
L"Forest",
L"Water",
L"I don't know",
};
int tab_1_selected = 0;
std::vector<std::wstring> tab_2_entries{
L"Hello",
L"Hi",
L"Hay",
};
int tab_2_selected = 0;
std::vector<std::wstring> tab_3_entries{
L"Table",
L"Nothing",
L"Is",
L"Empty",
};
int tab_3_selected = 0;
auto tab_container = Container::Tab(
&tab_selected, {
Radiobox(&tab_1_entries, &tab_1_selected),
Radiobox(&tab_2_entries, &tab_2_selected),
Radiobox(&tab_3_entries, &tab_3_selected),
});
auto container = Container::Horizontal({
tab_menu,
tab_container,
});
auto renderer = Renderer(container, [&] {
return hbox({
tab_menu->Render(),
separator(),
tab_container->Render(),
}) |
border;
});
auto screen = ScreenInteractive::TerminalOutput();
MyComponent component;
component.on_enter = screen.ExitLoopClosure();
screen.Loop(&component);
screen.Loop(renderer);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

92
examples/component/toggle.cpp
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@ -1,59 +1,63 @@
#include "ftxui/component/toggle.hpp"
#include "ftxui/component/container.hpp" // for Container
#include "ftxui/component/event.hpp" // for Event, Event::Return
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include <memory> // for allocator, __shared_ptr_access
#include <string> // for wstring, basic_string
#include <vector> // for vector
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Toggle, Renderer, Vertical
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/screen_interactive.hpp" // for Component, ScreenInteractive
#include "ftxui/dom/elements.hpp" // for text, hbox, vbox, Element
using namespace ftxui;
class MyComponent : public Component {
public:
MyComponent() {
Add(&container_);
container_.Add(&toggle_1_);
container_.Add(&toggle_2_);
container_.Add(&toggle_3_);
container_.Add(&toggle_4_);
int main(int argc, const char* argv[]) {
std::vector<std::wstring> toggle_1_entries = {
L"On",
L"Off",
};
std::vector<std::wstring> toggle_2_entries = {
L"Enabled",
L"Disabled",
};
std::vector<std::wstring> toggle_3_entries = {
L"10€",
L"0€",
};
std::vector<std::wstring> toggle_4_entries = {
L"Nothing",
L"One element",
L"Several elements",
};
toggle_1_.entries = {L"On", L"Off"};
toggle_2_.entries = {L"Enabled", L"Disabled"};
toggle_3_.entries = {L"10€", L"0€"};
toggle_4_.entries = {L"Nothing", L"One element", L"Several elements"};
}
int toggle_1_selected = 0;
int toggle_2_selected = 0;
int toggle_3_selected = 0;
int toggle_4_selected = 0;
Component toggle_1 = Toggle(&toggle_1_entries, &toggle_1_selected);
Component toggle_2 = Toggle(&toggle_2_entries, &toggle_2_selected);
Component toggle_3 = Toggle(&toggle_3_entries, &toggle_3_selected);
Component toggle_4 = Toggle(&toggle_4_entries, &toggle_4_selected);
std::function<void()> on_enter = []() {};
auto container = Container::Vertical({
toggle_1,
toggle_2,
toggle_3,
toggle_4,
});
private:
Container container_ = Container::Vertical();
Toggle toggle_1_;
Toggle toggle_2_;
Toggle toggle_3_;
Toggle toggle_4_;
Element Render() override {
auto renderer = Renderer(container, [&] {
return vbox({
text(L"Choose your options:"),
text(L""),
hbox(text(L" * Poweroff on startup : "), toggle_1_.Render()),
hbox(text(L" * Out of process : "), toggle_2_.Render()),
hbox(text(L" * Price of the information : "), toggle_3_.Render()),
hbox(text(L" * Number of elements : "), toggle_4_.Render()),
hbox(text(L" * Poweroff on startup : "), toggle_1->Render()),
hbox(text(L" * Out of process : "), toggle_2->Render()),
hbox(text(L" * Price of the information : "), toggle_3->Render()),
hbox(text(L" * Number of elements : "), toggle_4->Render()),
});
}
});
bool OnEvent(Event event) override {
if (event == Event::Return) {
on_enter();
return true;
}
return Component::OnEvent(event);
}
};
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::TerminalOutput();
MyComponent component;
component.on_enter = screen.ExitLoopClosure();
screen.Loop(&component);
screen.Loop(renderer);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

15
examples/dom/hflow.cpp
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@ -1,11 +1,12 @@
#include <stddef.h>
#include <ftxui/dom/elements.hpp>
#include <ftxui/screen/screen.hpp>
#include <ftxui/screen/string.hpp>
#include <string>
#include <stddef.h> // for size_t
#include <ftxui/dom/elements.hpp> // for operator|, size, Element, text, hcenter, Decorator, WIDTH, hflow, window, EQUAL, GREATER_THAN, HEIGHT, bold, border, dim, LESS_THAN
#include <ftxui/screen/screen.hpp> // for Dimension, Screen
#include <ftxui/screen/string.hpp> // for to_wstring
#include <memory> // for shared_ptr
#include <string> // for allocator, operator+, char_traits, wstring
#include "ftxui/dom/node.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/dom/node.hpp" // for Render
#include "ftxui/screen/box.hpp" // for ftxui
int main(int argc, const char* argv[]) {
using namespace ftxui;

19
examples/dom/html_like.cpp
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@ -1,13 +1,14 @@
#include <chrono>
#include <ftxui/dom/elements.hpp>
#include <ftxui/screen/screen.hpp>
#include <iostream>
#include <string>
#include <thread>
#include <chrono> // for operator""s, chrono_literals
#include <ftxui/dom/elements.hpp> // for paragraph, text, operator|, Element, border, color, hflow, spinner, vbox, bold, dim, underlined
#include <ftxui/screen/screen.hpp> // for Screen, Dimension
#include <iostream> // for cout, ostream
#include <memory> // for shared_ptr
#include <string> // for allocator, operator<<, string
#include <thread> // for sleep_for
#include "ftxui/dom/node.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/color.hpp"
#include "ftxui/dom/node.hpp" // for Render
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/color.hpp" // for Color, Color::Red
int main(int argc, const char* argv[]) {
using namespace ftxui;

11
examples/index.html
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@ -33,15 +33,18 @@
"./component/menu.js",
"./component/menu2.js",
"./component/menu_style.js",
"./component/modal_dialog.js",
"./component/radiobox.js",
"./component/radiobox_in_frame.js",
"./component/slider.js",
"./component/tab_horizontal.js",
"./component/tab_vertical.js",
"./component/toggle.js",
"./component/modal_dialog.js",
"./dom/border.js",
"./dom/color_gallery.js",
"./dom/color_info_palette256.js",
"./dom/color_truecolor_HSV.js",
"./dom/color_truecolor_RGB.js",
"./dom/dbox.js",
"./dom/gauge.js",
"./dom/graph.js",
@ -55,16 +58,12 @@
"./dom/style_blink.js",
"./dom/style_bold.js",
"./dom/style_color.js",
"./dom/color_truecolor_RGB.js",
"./dom/color_truecolor_HSV.js",
"./dom/color_info_palette256.js",
"./dom/style_dim.js",
"./dom/style_gallery.js",
"./dom/style_inverted.js",
"./dom/style_underlined.js",
"./dom/vbox_hbox.js",
"./dom/window.js",
"./util/print_key_press.js",
];

22
examples/util/print_key_press.cpp
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@ -4,16 +4,17 @@
#include <stddef.h> // for size_t
#include <algorithm> // for max
#include <ftxui/component/component.hpp> // for Component
#include <ftxui/component/component.hpp> // for Make
#include <ftxui/component/screen_interactive.hpp> // for ScreenInteractive
#include <string> // for allocator, operator+
#include <utility> // for move
#include <vector> // for vector
#include <string> // for allocator, operator+, wstring, char_traits, to_wstring, string
#include <utility> // for move
#include <vector> // for vector
#include "ftxui/component/event.hpp" // for Event
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left
#include "ftxui/dom/elements.hpp" // for text, vbox, window
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/event.hpp" // for Event
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Middle, Mouse::None, Mouse::Pressed, Mouse::Released, Mouse::Right, Mouse::WheelDown, Mouse::WheelUp
#include "ftxui/dom/elements.hpp" // for text, vbox, window, Elements, Element
using namespace ftxui;
@ -71,7 +72,7 @@ std::wstring Stringify(Event event) {
return out;
}
class DrawKey : public Component {
class DrawKey : public ComponentBase {
public:
~DrawKey() override = default;
@ -94,6 +95,5 @@ class DrawKey : public Component {
int main(int argc, const char* argv[]) {
auto screen = ScreenInteractive::TerminalOutput();
DrawKey draw_key;
screen.Loop(&draw_key);
screen.Loop(Make<DrawKey>());
}

30
include/ftxui/component/button.hpp
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@ -1,36 +1,36 @@
#ifndef FTXUI_COMPONENT_BUTTON_HPP
#define FTXUI_COMPONENT_BUTTON_HPP
#include <functional>
#include <string>
#include <functional> // for function
#include <string> // for wstring
#include "ftxui/component/component.hpp"
#include "ftxui/dom/elements.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/dom/elements.hpp" // for Element
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/string.hpp" // for ConstStringRef
namespace ftxui {
struct Event;
/// @brief A button. An action is associated to the click event.
/// @ingroup dom
class Button : public Component {
class ButtonBase : public ComponentBase {
public:
// Access this interface from a Component
static ButtonBase* From(Component);
// Constructor.
Button() = default;
Button(std::wstring label) : label(label) {}
~Button() override = default;
/// The Button label.
std::wstring label = L"button";
/// Called when the user press the "enter" button.
std::function<void()> on_click = [] {};
ButtonBase(ConstStringRef label, std::function<void()> on_click);
~ButtonBase() override = default;
// Component implementation.
Element Render() override;
bool OnEvent(Event) override;
private:
ConstStringRef label_;
std::function<void()> on_click_;
Box box_;
};

26
include/ftxui/component/checkbox.hpp
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@ -1,10 +1,14 @@
#ifndef FTXUI_COMPONENT_CHECKBOX_HPP
#define FTXUI_COMPONENT_CHECKBOX_HPP
#include <string>
#include <functional> // for function
#include <string> // for allocator, wstring
#include "ftxui/component/component.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/dom/elements.hpp" // for Element, Decorator, inverted, nothing
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/string.hpp" // for ConstStringRef
namespace ftxui {
struct Event;
@ -12,14 +16,14 @@ struct Event;
/// @brief A Checkbox. It can be checked or unchecked.Display an element on a
/// ftxui::Screen.
/// @ingroup dom
class CheckBox : public Component {
class CheckboxBase : public ComponentBase {
public:
// Constructor.
CheckBox() = default;
~CheckBox() override = default;
// Access this interface from a Component
static CheckboxBase* From(Component component);
bool state = false; // The current state. true=checked, false:unchecked.
std::wstring label = L"label"; // The CheckBox label.
// Constructor.
CheckboxBase(ConstStringRef label, bool* state);
~CheckboxBase() override = default;
#if defined(_WIN32)
std::wstring checked = L"[X] "; /// Prefix for a "checked" state.
@ -32,7 +36,7 @@ class CheckBox : public Component {
Decorator focused_style = inverted; /// Decorator used when focused.
Decorator unfocused_style = nothing; /// Decorator used when unfocused.
/// Called when the user change the state of the CheckBox.
/// Called when the user change the state of the CheckboxBase.
std::function<void()> on_change = []() {};
// Component implementation.
@ -42,6 +46,8 @@ class CheckBox : public Component {
private:
bool OnMouseEvent(Event event);
ConstStringRef label_;
bool* const state_;
int cursor_position = 0;
Box box_;
};

95
include/ftxui/component/component.hpp
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@ -1,77 +1,48 @@
#ifndef FTXUI_COMPONENT_COMPONENT_HPP
#define FTXUI_COMPONENT_COMPONENT_HPP
#ifndef FTXUI_COMPONENT_HPP
#define FTXUI_COMPONENT_HPP
#include <memory> // for unique_ptr
#include <vector> // for vector
#include <functional> // for function
#include <memory> // for shared_ptr, make_shared
#include <string> // for wstring
#include <vector> // for vector
#include "ftxui/component/captured_mouse.hpp" // for CaptureMouse
#include "ftxui/dom/elements.hpp" // for Element
#include "ftxui/component/component_base.hpp"
#include "ftxui/dom/elements.hpp" // for Element
#include "ftxui/screen/string.hpp" // for ConstStringRef, StringRef
namespace ftxui {
class Delegate;
class Focus;
struct Event;
class ComponentBase;
/// @brief It implement rendering itself as ftxui::Element. It implement
/// keyboard navigation by responding to ftxui::Event.
/// @ingroup component
class Component {
public:
// Constructor/Destructor.
Component() = default;
virtual ~Component();
using Component = std::shared_ptr<ComponentBase>;
using Components = std::vector<Component>;
// Component hierarchy.
Component* Parent();
void Add(Component* children);
template <class T, class... Args>
std::shared_ptr<T> Make(Args&&... args) {
return std::make_shared<T>(args...);
}
// Renders the component.
virtual Element Render();
Component Button(ConstStringRef label, std::function<void()> on_click);
Component Checkbox(ConstStringRef label, bool* checked);
Component Input(StringRef content, ConstStringRef placeholder);
Component Menu(const std::vector<std::wstring>* entries, int* selected_);
Component Radiobox(const std::vector<std::wstring>* entries, int* selected_);
Component Toggle(const std::vector<std::wstring>* entries, int* selected);
Component Renderer(Component child, std::function<Element()>);
Component Renderer(std::function<Element()>);
template <class T> // T = {int, float}
Component Slider(StringRef label, T* value, T min, T max, T increment);
// Handles an event.
// By default, reduce on children with a lazy OR.
//
// Returns whether the event was handled or not.
virtual bool OnEvent(Event);
// Focus management ----------------------------------------------------------
//
// If this component contains children, this indicates which one is active,
// nullptr if none is active.
//
// We say an element has the focus if the chain of ActiveChild() from the
// root component contains this object.
virtual Component* ActiveChild();
// Whether this is the active child of its parent.
bool Active();
// Whether all the ancestors are active.
bool Focused();
// Make the |child| to be the "active" one.
virtual void SetActiveChild(Component* child);
// Configure all the ancestors to give focus to this component.
void TakeFocus();
protected:
CapturedMouse CaptureMouse(const Event& event);
std::vector<Component*> children_;
private:
Component* parent_ = nullptr;
void Detach();
void Attach(Component* parent);
};
using ComponentPtr = std::unique_ptr<Component>;
namespace Container {
Component Vertical(Components children);
Component Horizontal(Components children);
Component Tab(int* selector, Components children);
} // namespace Container
} // namespace ftxui
#endif /* end of include guard: FTXUI_COMPONENT_COMPONENT_HPP */
#endif /* end of include guard: FTXUI_COMPONENT_HPP */
// Copyright 2020 Arthur Sonzogni. All rights reserved.
// Copyright 2021 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.

81
include/ftxui/component/component_base.hpp Normal file
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@ -0,0 +1,81 @@
#ifndef FTXUI_COMPONENT_BASE_HPP
#define FTXUI_COMPONENT_BASE_HPP
#include <memory> // for unique_ptr
#include <vector> // for vector
#include "ftxui/component/captured_mouse.hpp" // for CaptureMouse
#include "ftxui/dom/elements.hpp" // for Element
namespace ftxui {
class Delegate;
class Focus;
struct Event;
class ComponentBase;
using Component = std::shared_ptr<ComponentBase>;
using Components = std::vector<Component>;
/// @brief It implement rendering itself as ftxui::Element. It implement
/// keyboard navigation by responding to ftxui::Event.
/// @ingroup component
class ComponentBase {
public:
// Constructor/Destructor.
ComponentBase() = default;
virtual ~ComponentBase();
// ComponentBase hierarchy.
ComponentBase* Parent();
void Add(Component children);
// Renders the component.
virtual Element Render();
// Handles an event.
// By default, reduce on children with a lazy OR.
//
// Returns whether the event was handled or not.
virtual bool OnEvent(Event);
// Focus management ----------------------------------------------------------
//
// If this component contains children, this indicates which one is active,
// nullptr if none is active.
//
// We say an element has the focus if the chain of ActiveChild() from the
// root component contains this object.
virtual Component ActiveChild();
// Whether this is the active child of its parent.
bool Active();
// Whether all the ancestors are active.
bool Focused();
// Make the |child| to be the "active" one.
virtual void SetActiveChild(ComponentBase* child);
void SetActiveChild(Component child);
// Configure all the ancestors to give focus to this component.
void TakeFocus();
protected:
CapturedMouse CaptureMouse(const Event& event);
std::vector<Component> children_;
private:
ComponentBase* parent_ = nullptr;
void Detach();
};
using Component = std::shared_ptr<ComponentBase>;
} // namespace ftxui
#endif /* end of include guard: FTXUI_COMPONENT_BASE_HPP */
// 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.

30
include/ftxui/component/container.hpp
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@ -1,36 +1,42 @@
#ifndef FTXUI_COMPONENT_CONTAINER_HPP
#define FTXUI_COMPONENT_CONTAINER_HPP
#include "ftxui/component/component.hpp"
#include "ftxui/component/event.hpp"
#include "ftxui/dom/elements.hpp"
#include "ftxui/component/component.hpp" // for Component, Components
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/event.hpp" // for Event
#include "ftxui/dom/elements.hpp" // for Element
namespace ftxui {
/// @brief A component where focus and events are automatically handled for you.
class Container : public Component {
class ContainerBase : public ComponentBase {
public:
static Container Vertical();
static Container Horizontal();
static Container Tab(int* selector);
static Component Vertical();
static Component Vertical(Components children);
~Container() override = default;
static Component Horizontal();
static Component Horizontal(Components children);
static Component Tab(int* selector);
static Component Tab(int* selector, Components children);
~ContainerBase() override = default;
// Component override.
bool OnEvent(Event event) override;
Element Render() override;
Component* ActiveChild() override;
virtual void SetActiveChild(Component*) override;
Component ActiveChild() override;
virtual void SetActiveChild(ComponentBase*) override;
protected:
// Handlers
using EventHandler = bool (Container::*)(Event);
using EventHandler = bool (ContainerBase::*)(Event);
bool VerticalEvent(Event event);
bool HorizontalEvent(Event event);
bool TabEvent(Event) { return false; }
EventHandler event_handler_;
using RenderHandler = Element (Container::*)();
using RenderHandler = Element (ContainerBase::*)();
Element VerticalRender();
Element HorizontalRender();
Element TabRender();

4
include/ftxui/component/event.hpp
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@ -8,7 +8,7 @@
namespace ftxui {
class ScreenInteractive;
class Component;
class ComponentBase;
/// @brief Represent an event. It can be key press event, a terminal resize, or
/// more ...
@ -76,7 +76,7 @@ struct Event {
//--- State section ----------------------------------------------------------
private:
friend Component;
friend ComponentBase;
friend ScreenInteractive;
enum class Type {
Unknown,

26
include/ftxui/component/input.hpp
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@ -1,27 +1,30 @@
#ifndef FTXUI_COMPONENT_INPUT_H_
#define FTXUI_COMPONENT_INPUT_H_
#include <functional>
#include <string>
#include <functional> // for function
#include <string> // for wstring
#include "ftxui/component/component.hpp"
#include "ftxui/dom/elements.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/dom/elements.hpp" // for Element
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/string.hpp" // for ConstStringRef, StringRef
namespace ftxui {
struct Event;
/// @brief An input box. The user can type text into it.
/// @ingroup component.
class Input : public Component {
class InputBase : public ComponentBase {
public:
// Access this interface from a Component
static InputBase* From(Component component);
// Constructor.
Input() = default;
~Input() override = default;
InputBase(StringRef content, ConstStringRef placeholder);
~InputBase() override = default;
// State.
std::wstring content;
std::wstring placeholder;
int cursor_position = 0;
// State update callback.
@ -33,6 +36,9 @@ class Input : public Component {
bool OnEvent(Event) override;
private:
StringRef content_;
ConstStringRef placeholder_;
bool OnMouseEvent(Event);
Box input_box_;
Box cursor_box_;

29
include/ftxui/component/menu.hpp
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@ -1,28 +1,30 @@
#ifndef FTXUI_COMPONENT_MENU
#define FTXUI_COMPONENT_MENU
#include <functional>
#include <string>
#include <vector>
#include <functional> // for function
#include <string> // for wstring
#include <vector> // for vector
#include "ftxui/component/component.hpp"
#include "ftxui/dom/elements.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/dom/elements.hpp" // for Element, Decorator, operator|, bold, inverted, nothing
#include "ftxui/screen/box.hpp" // for Box
namespace ftxui {
struct Event;
/// @brief A list of items. The user can navigate through them.
/// @ingroup component
class Menu : public Component {
class MenuBase : public ComponentBase {
public:
// Access this interface from a Component
static MenuBase* From(Component component);
// Constructor.
Menu() = default;
~Menu() override = default;
MenuBase(const std::vector<std::wstring>* entries, int* selected_);
~MenuBase() override = default;
// State.
std::vector<std::wstring> entries = {};
int selected = 0;
int focused = 0;
Decorator normal_style = nothing;
@ -38,7 +40,10 @@ class Menu : public Component {
Element Render() override;
bool OnEvent(Event) override;
private:
protected:
const std::vector<std::wstring>* const entries_;
int* selected_ = 0;
bool OnMouseEvent(Event);
std::vector<Box> boxes_;

28
include/ftxui/component/radiobox.hpp
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@ -1,12 +1,14 @@
#ifndef FTXUI_COMPONENT_RADIOBOX_HPP
#define FTXUI_COMPONENT_RADIOBOX_HPP
#include <string>
#include <vector>
#include <functional> // for function
#include <string> // for wstring, allocator
#include <vector> // for vector
#include "ftxui/component/component.hpp"
#include "ftxui/dom/elements.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/dom/elements.hpp" // for Element, Decorator, inverted, nothing
#include "ftxui/screen/box.hpp" // for Box
namespace ftxui {
struct Event;
@ -14,15 +16,16 @@ struct Event;
/// @brief A list of selectable element. One and only one can be selected at
/// the same time.
/// @ingroup component
class RadioBox : public Component {
class RadioboxBase : public ComponentBase {
public:
// Constructor.
RadioBox() = default;
~RadioBox() override = default;
// Access this interface from a Component
static RadioboxBase* From(Component component);
// Constructor.
RadioboxBase(const std::vector<std::wstring>* entries, int* selected);
~RadioboxBase() override = default;
int selected = 0;
int focused = 0;
std::vector<std::wstring> entries;
#if defined(_WIN32)
std::wstring checked = L"(*) ";
@ -43,6 +46,9 @@ class RadioBox : public Component {
bool OnEvent(Event) override;
private:
const std::vector<std::wstring>* const entries_;
int* const selected_;
bool OnMouseEvent(Event event);
int cursor_position = 0;
std::vector<Box> boxes_;

10
include/ftxui/component/receiver.hpp
View File

@ -1,13 +1,15 @@
#ifndef FTXUI_COMPONENT_RECEIVER_HPP_
#define FTXUI_COMPONENT_RECEIVER_HPP_
#include <atomic> // for atomic
#include <algorithm> // for copy, max
#include <atomic> // for atomic, __atomic_base
#include <condition_variable> // for condition_variable
#include <functional>
#include <iostream>
#include <memory> // for unique_ptr, make_unique
#include <mutex> // for mutex, unique_lock
#include <queue> // for queue
#include <memory> // for unique_ptr, make_unique
#include <mutex> // for mutex, unique_lock
#include <queue> // for queue
#include <utility> // for move
namespace ftxui {

19
include/ftxui/component/screen_interactive.hpp
View File

@ -1,17 +1,20 @@
#ifndef FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
#define FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
#include <atomic> // for atomic
#include <ftxui/component/receiver.hpp>
#include <memory> // for unique_ptr
#include <string> // for string
#include <atomic> // for atomic
#include <ftxui/component/receiver.hpp> // for Receiver, Sender
#include <functional> // for function
#include <memory> // for shared_ptr
#include <string> // for string
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
#include "ftxui/component/event.hpp"
#include "ftxui/screen/screen.hpp" // for Screen
namespace ftxui {
class Component;
class ComponentBase;
using Component = std::shared_ptr<ComponentBase>;
struct Event;
class ScreenInteractive : public Screen {
@ -22,15 +25,15 @@ class ScreenInteractive : public Screen {
static ScreenInteractive TerminalOutput();
~ScreenInteractive();
void Loop(Component*);
void Loop(Component);
std::function<void()> ExitLoopClosure();
void PostEvent(Event event);
CapturedMouse CaptureMouse();
private:
void Draw(Component* component);
void EventLoop(Component* component);
void Draw(Component component);
void EventLoop(Component component);
enum class Dimension {
FitComponent,

23
include/ftxui/component/slider.hpp
View File

@ -1,23 +0,0 @@
#ifndef FTXUI_COMPONENT_SLIDER_HPP
#define FTXUI_COMPONENT_SLIDER_HPP
#include <string>
#include "ftxui/component/component.hpp"
namespace ftxui {
// ComponentPtr Slider(std::string label,
// float* value,
// float min = 0.f,
// float max = 100.f,
// float increment = (max - min) * 0.05f);
template <class T> // T = {int, float}
ComponentPtr Slider(std::wstring label, T* value, T min, T max, T increment);
} // namespace ftxui
#endif /* end of include guard: FTXUI_COMPONENT_SLIDER_HPP */
// 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.

27
include/ftxui/component/toggle.hpp
View File

@ -1,26 +1,30 @@
#ifndef FTXUI_COMPONENT_TOGGLE_H_
#define FTXUI_COMPONENT_TOGGLE_H_
#include <string>
#include <vector>
#include <functional> // for function
#include <string> // for wstring
#include <vector> // for vector
#include "ftxui/component/component.hpp"
#include "ftxui/dom/elements.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/dom/elements.hpp" // for Element, Decorator, operator|, bold, dim, inverted
#include "ftxui/screen/box.hpp" // for Box
namespace ftxui {
struct Event;
/// @brief An horizontal list of elements. The user can navigate through them.
/// @ingroup component
class Toggle : public Component {
class ToggleBase : public ComponentBase {
public:
// Access this interface from a Component
static ToggleBase* From(Component component);
// Constructor.
~Toggle() override = default;
ToggleBase(const std::vector<std::wstring>* entries, int* selected);
~ToggleBase() override = default;
// State.
std::vector<std::wstring> entries = {L"On", L"Off"};
int selected = 0;
int focused = 0;
Decorator normal_style = dim;
@ -36,7 +40,10 @@ class Toggle : public Component {
Element Render() override;
bool OnEvent(Event) override;
private:
protected:
const std::vector<std::wstring>* const entries_;
int* selected_ = 0;
bool OnMouseEvent(Event event);
std::vector<Box> boxes_;
};

35
include/ftxui/screen/string.hpp
View File

@ -16,6 +16,41 @@ int wchar_width(wchar_t);
int wchar_width_cjk(wchar_t);
int wstring_width(const std::wstring&);
int wstring_width_cjk(const std::wstring&);
/// @brief For convenience, this class convert multiple mutable string
/// references toward a shared representation.
class StringRef {
public:
StringRef(std::wstring& ref);
StringRef(std::wstring* ref);
StringRef(const wchar_t* ref);
StringRef(const char* ref);
std::wstring& operator*();
std::wstring* operator->();
private:
std::wstring* const borrowed_ = nullptr;
std::wstring owned_;
};
/// @brief For convenience, this class convert multiple immutable string
/// references toward shared representation.
class ConstStringRef {
public:
ConstStringRef(const std::wstring& ref);
ConstStringRef(const std::wstring* ref);
ConstStringRef(const wchar_t* ref);
ConstStringRef(const char* ref);
const std::wstring& operator*();
const std::wstring* operator->();
private:
const std::wstring* const borrowed_ = nullptr;
const std::wstring owned_;
};
} // namespace ftxui
#endif /* end of include guard: FTXUI_SCREEN_STRING_HPP */

9
iwyu.imp
View File

@ -1,8 +1,11 @@
[
{ symbol: [ "VMIN", private, "<termios.h>", public ] },
{ symbol: [ "VTIME", private, "<termios.h>", public ] },
{ symbol: [ "ECHO", private, "<termios.h>", public ] },
{ symbol: [ "ICANON", private, "<termios.h>", public ] },
{ symbol: [ "termios", private, "<termios.h>", public ] },
{ symbol: [ "TCSANOW", private, "<termios.h>", public ] },
{ symbol: [ "VMIN", private, "<termios.h>", public ] },
{ symbol: [ "VTIME", private, "<termios.h>", public ] },
{ symbol: [ "__shared_ptr_access", private, "<memory>", public ] },
{ symbol: [ "termios", private, "<termios.h>", public ] },
{ symbol: ["__alloc_traits<>:value_type", private, "<vector>", public ] },
{ include: ["<ext/alloc_traits.h>", private, "<vector>", public] },
]

46
src/ftxui/component/button.cpp
View File

@ -9,12 +9,46 @@
namespace ftxui {
Element Button::Render() {
auto style = Focused() ? inverted : nothing;
return text(label) | border | style | reflect(box_);
/// @brief Draw a button. Execute a function when clicked.
/// @param label The label of the button.
/// @param on_click The action to execute when clicked.
/// @ingroup component
/// @see ButtonBase
///
/// ### Example
///
/// ```cpp
/// auto screen = ScreenInteractive::FitComponent();
/// std::wstring label = L"Click to quit";
/// Component button = Button(&label, screen.ExitLoopClosure());
/// screen.Loop(button)
/// ```
///
/// ### Output
///
/// ```bash
/// ┌─────────────┐
/// │Click to quit│
/// └─────────────┘
/// ```
Component Button(ConstStringRef label, std::function<void()> on_click) {
return Make<ButtonBase>(label, on_click);
}
bool Button::OnEvent(Event event) {
// static
ButtonBase* ButtonBase::From(Component component) {
return static_cast<ButtonBase*>(component.get());
}
ButtonBase::ButtonBase(ConstStringRef label, std::function<void()> on_click)
: label_(label), on_click_(on_click) {}
Element ButtonBase::Render() {
auto style = Focused() ? inverted : nothing;
return text(*label_) | border | style | reflect(box_);
}
bool ButtonBase::OnEvent(Event event) {
if (event.is_mouse() && box_.Contain(event.mouse().x, event.mouse().y)) {
if (!CaptureMouse(event))
return false;
@ -23,7 +57,7 @@ bool Button::OnEvent(Event event) {
if (event.mouse().button == Mouse::Left &&
event.mouse().motion == Mouse::Pressed) {
on_click();
on_click_();
return true;
}
@ -31,7 +65,7 @@ bool Button::OnEvent(Event event) {
}
if (event == Event::Return) {
on_click();
on_click_();
return true;
}
return false;

51
src/ftxui/component/checkbox.cpp
View File

@ -9,29 +9,62 @@
namespace ftxui {
Element CheckBox::Render() {
/// @brief Draw checkable element.
/// @param label The label of the checkbox.
/// @param checked Whether the checkbox is checked or not.
/// @ingroup component
/// @see CheckboxBase
///
/// ### Example
///
/// ```cpp
/// auto screen = ScreenInteractive::FitComponent();
/// std::wstring label = L"Make a sandwidth";
/// bool checked = false;
/// Component checkbox = Checkbox(&label, &checked);
/// screen.Loop(checkbox)
/// ```
///
/// ### Output
///
/// ```bash
/// ☐ Make a sandwitch
/// ```
Component Checkbox(ConstStringRef label, bool* checked) {
return Make<CheckboxBase>(label, checked);
}
// static
CheckboxBase* CheckboxBase::From(Component component) {
return static_cast<CheckboxBase*>(component.get());
}
CheckboxBase::CheckboxBase(ConstStringRef label, bool* state)
: label_(label), state_(state) {}
Element CheckboxBase::Render() {
bool is_focused = Focused();
auto style = is_focused ? focused_style : unfocused_style;
auto focus_management = is_focused ? focus : state ? select : nothing;
return hbox(text(state ? checked : unchecked),
text(label) | style | focus_management) |
auto focus_management = is_focused ? focus : *state_ ? select : nothing;
return hbox(text(*state_ ? checked : unchecked),
text(*label_) | style | focus_management) |
reflect(box_);
}
bool CheckBox::OnEvent(Event event) {
bool CheckboxBase::OnEvent(Event event) {
if (event.is_mouse())
return OnMouseEvent(event);
if (event == Event::Character(' ') || event == Event::Return) {
state = !state;
*state_ = !*state_;
on_change();
return true;
}
return false;
}
bool CheckBox::OnMouseEvent(Event event) {
if (!CaptureMouse(event))
bool CheckboxBase::OnMouseEvent(Event event) {
if (!CaptureMouse(event))
return false;
if (!box_.Contain(event.mouse().x, event.mouse().y))
return false;
@ -40,7 +73,7 @@ bool CheckBox::OnMouseEvent(Event event) {
if (event.mouse().button == Mouse::Left &&
event.mouse().motion == Mouse::Pressed) {
state = !state;
*state_ = !*state_;
on_change();
return true;
}

92
src/ftxui/component/component.cpp
View File

@ -1,10 +1,13 @@
#include <algorithm> // for find_if, max
#include <iterator> // for begin, end
#include <utility> // for move
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse, CapturedMouseInterface
#include "ftxui/component/component.hpp"
#include <algorithm>
#include "ftxui/component/captured_mouse.hpp"
#include "ftxui/component/event.hpp"
#include "ftxui/component/screen_interactive.hpp"
#include "ftxui/component/component_base.hpp" // for ComponentBase, Component
#include "ftxui/component/event.hpp" // for Event
#include "ftxui/component/screen_interactive.hpp" // for Component, ScreenInteractive
#include "ftxui/dom/elements.hpp" // for text, Element
namespace ftxui {
@ -13,33 +16,35 @@ class CaptureMouseImpl : public CapturedMouseInterface {
public:
~CaptureMouseImpl() override {}
};
}
} // namespace
Component::~Component() {
ComponentBase::~ComponentBase() {
Detach();
}
/// @brief Return the parent Component, or nul if any.
/// @brief Return the parent ComponentBase, or nul if any.
/// @see Attach
/// @see Detach
/// @see Parent
/// @ingroup component
Component* Component::Parent() {
ComponentBase* ComponentBase::Parent() {
return parent_;
}
/// @brief Add a children.
/// @@param child The child to be attached.
/// @ingroup component
void Component::Add(Component* child) {
child->Attach(this);
void ComponentBase::Add(Component child) {
child->Detach();
child->parent_ = this;
children_.push_back(std::move(child));
}
/// @brief Draw the component.
/// Build a ftxui::Element to be drawn on the ftxi::Screen representing this
/// ftxui::Component.
/// ftxui::ComponentBase.
/// @ingroup component
Element Component::Render() {
Element ComponentBase::Render() {
if (children_.size() == 1)
return children_.front()->Render();
@ -52,8 +57,8 @@ Element Component::Render() {
/// The default implementation called OnEvent on every child until one return
/// true. If none returns true, return false.
/// @ingroup component
bool Component::OnEvent(Event event) {
for (Component* child : children_) {
bool ComponentBase::OnEvent(Event event) {
for (Component& child : children_) {
if (child->OnEvent(event))
return true;
}
@ -63,27 +68,27 @@ bool Component::OnEvent(Event event) {
/// @brief Return the currently Active child.
/// @return the currently Active child.
/// @ingroup component
Component* Component::ActiveChild() {
Component ComponentBase::ActiveChild() {
return children_.empty() ? nullptr : children_.front();
}
/// @brief Returns if the element if the currently active child of its parent.
/// @ingroup component
bool Component::Active() {
return !parent_ || parent_->ActiveChild() == this;
bool ComponentBase::Active() {
return !parent_ || parent_->ActiveChild().get() == this;
}
/// @brief Returns if the elements if focused by the user.
/// True when the Component is focused by the user. An element is Focused when
/// it is with all its ancestors the ActiveChild() of their parents.
/// True when the ComponentBase is focused by the user. An element is Focused
/// when it is with all its ancestors the ActiveChild() of their parents.
/// @ingroup component
bool Component::Focused() {
Component* current = this;
bool ComponentBase::Focused() {
ComponentBase* current = this;
for (;;) {
Component* parent = current->parent_;
ComponentBase* parent = current->parent_;
if (!parent)
return true;
if (parent->ActiveChild() != current)
if (parent->ActiveChild().get() != current)
return false;
current = parent;
}
@ -92,13 +97,20 @@ bool Component::Focused() {
/// @brief Make the |child| to be the "active" one.
/// @argument child the child to become active.
/// @ingroup component
void Component::SetActiveChild(Component*) {}
void ComponentBase::SetActiveChild(ComponentBase*) {}
/// @brief Make the |child| to be the "active" one.
/// @argument child the child to become active.
/// @ingroup component
void ComponentBase::SetActiveChild(Component child) {
SetActiveChild(child.get());
}
/// @brief Configure all the ancestors to give focus to this component.
/// @ingroup component
void Component::TakeFocus() {
Component* child = this;
Component* parent = parent_;
void ComponentBase::TakeFocus() {
ComponentBase* child = this;
ComponentBase* parent = parent_;
while (parent) {
parent->SetActiveChild(child);
child = parent;
@ -110,7 +122,7 @@ void Component::TakeFocus() {
/// them. It represents a component taking priority over others.
/// @argument event
/// @ingroup component
CapturedMouse Component::CaptureMouse(const Event& event) {
CapturedMouse ComponentBase::CaptureMouse(const Event& event) {
if (!event.screen_)
return std::make_unique<CaptureMouseImpl>();
return event.screen_->CaptureMouse();
@ -121,25 +133,17 @@ CapturedMouse Component::CaptureMouse(const Event& event) {
/// @see Detach
/// @see Parent
/// @ingroup component
void Component::Detach() {
void ComponentBase::Detach() {
if (!parent_)
return;
auto it = std::find(std::begin(parent_->children_),
std::end(parent_->children_), this);
auto it = std::find_if(std::begin(parent_->children_), //
std::end(parent_->children_), //
[this](const Component& that) { //
return this == that.get();
});
parent_->children_.erase(it);
}
/// @brief Attach this element to its parent.
/// @see Attach
/// @see Detach
/// @see Parent
/// @ingroup component
void Component::Attach(Component* parent) {
Detach();
parent_ = parent;
parent_->children_.push_back(this);
}
} // namespace ftxui
// Copyright 2020 Arthur Sonzogni. All rights reserved.

150
src/ftxui/component/container.cpp
View File

@ -1,37 +1,127 @@
#include "ftxui/component/container.hpp"
#include <stddef.h> // for size_t
#include <algorithm> // for max, min
#include <memory> // for __shared_ptr_access, shared_ptr, make_shared, allocator, __shared_ptr_access<>::element_type, allocator_traits<>::value_type
#include <utility> // for move
#include <vector> // for vector, __alloc_traits<>::value_type
#include <stddef.h>
#include <algorithm>
#include <vector>
#include "ftxui/component/container.hpp"
namespace ftxui {
namespace Container {
/// @brief A list of components, drawn one by one vertically and navigated
/// vertically using up/down arrow key or 'j'/'k' keys.
/// @param children the list of components.
/// @ingroup component
/// @see ContainerBase
///
/// ### Example
///
/// ```cpp
/// auto container = Container::Vertical({
/// children_1,
/// children_2,
/// children_3,
/// children_4,
/// });
/// ```
Component Vertical(Components children) {
return ContainerBase::Vertical(std::move(children));
}
/// @brief A list of components, drawn one by one horizontally and navigated
/// horizontally using left/right arrow key or 'h'/'l' keys.
/// @param children the list of components.
/// @ingroup component
/// @see ContainerBase
///
/// ### Example
///
/// ```cpp
/// auto container = Container::Horizontal({
/// children_1,
/// children_2,
/// children_3,
/// children_4,
/// });
/// ```
Component Horizontal(Components children) {
return ContainerBase::Horizontal(std::move(children));
}
/// @brief A list of components, where only one is drawn and interacted with at
/// a time. The |selector| gives the index of the selected component. This is
/// useful to implement tabs.
/// @param selector The index of the drawn children.
/// @param children the list of components.
/// @ingroup component
/// @see ContainerBase
///
/// ### Example
///
/// ```cpp
/// int tab_drawn = 0;
/// auto container = Container::Tab(&tab_drawn, {
/// children_1,
/// children_2,
/// children_3,
/// children_4,
/// });
/// ```
Component Tab(int* selector, Components children) {
return ContainerBase::Tab(selector, std::move(children));
}
} // namespace Container
// static
Container Container::Horizontal() {
Container container;
container.event_handler_ = &Container::HorizontalEvent;
container.render_handler_ = &Container::HorizontalRender;
Component ContainerBase::Vertical() {
return Vertical({});
}
// static
Component ContainerBase::Vertical(Components children) {
auto container = std::make_shared<ContainerBase>();
container->event_handler_ = &ContainerBase::VerticalEvent;
container->render_handler_ = &ContainerBase::VerticalRender;
for (Component& child : children)
container->Add(std::move(child));
return container;
}
// static
Container Container::Vertical() {
Container container;
container.event_handler_ = &Container::VerticalEvent;
container.render_handler_ = &Container::VerticalRender;
Component ContainerBase::Horizontal() {
return Horizontal({});
}
// static
Component ContainerBase::Horizontal(Components children) {
auto container = std::make_shared<ContainerBase>();
container->event_handler_ = &ContainerBase::HorizontalEvent;
container->render_handler_ = &ContainerBase::HorizontalRender;
for (Component& child : children)
container->Add(std::move(child));
return container;
}
// static
Container Container::Tab(int* selector) {
Container container;
container.event_handler_ = &Container::TabEvent;
container.render_handler_ = &Container::TabRender;
container.selector_ = selector;
Component ContainerBase::Tab(int* selector) {
return Tab(selector, {});
}
// static
Component ContainerBase::Tab(int* selector, Components children) {
auto container = std::make_shared<ContainerBase>();
container->selector_ = selector;
container->event_handler_ = &ContainerBase::TabEvent;
container->render_handler_ = &ContainerBase::TabRender;
for (Component& child : children)
container->Add(std::move(child));
return container;
}
bool Container::OnEvent(Event event) {
bool ContainerBase::OnEvent(Event event) {
if (event.is_mouse())
return OnMouseEvent(event);
@ -44,7 +134,7 @@ bool Container::OnEvent(Event event) {
return (this->*event_handler_)(event);
}
Component* Container::ActiveChild() {
Component ContainerBase::ActiveChild() {
if (children_.size() == 0)
return nullptr;
@ -52,16 +142,16 @@ Component* Container::ActiveChild() {
return children_[selected % children_.size()];
}
void Container::SetActiveChild(Component* child) {
void ContainerBase::SetActiveChild(ComponentBase* child) {
for (size_t i = 0; i < children_.size(); ++i) {
if (children_[i] == child) {
if (children_[i].get() == child) {
(selector_ ? *selector_ : selected_) = i;
return;
}
}
}
bool Container::VerticalEvent(Event event) {
bool ContainerBase::VerticalEvent(Event event) {
int old_selected = selected_;
if (event == Event::ArrowUp || event == Event::Character('k'))
selected_--;
@ -76,7 +166,7 @@ bool Container::VerticalEvent(Event event) {
return old_selected != selected_;
}
bool Container::HorizontalEvent(Event event) {
bool ContainerBase::HorizontalEvent(Event event) {
int old_selected = selected_;
if (event == Event::ArrowLeft || event == Event::Character('h'))
selected_--;
@ -91,11 +181,11 @@ bool Container::HorizontalEvent(Event event) {
return old_selected != selected_;
}
Element Container::Render() {
Element ContainerBase::Render() {
return (this->*render_handler_)();
}
Element Container::VerticalRender() {
Element ContainerBase::VerticalRender() {
Elements elements;
for (auto& it : children_)
elements.push_back(it->Render());
@ -104,7 +194,7 @@ Element Container::VerticalRender() {
return vbox(std::move(elements));
}
Element Container::HorizontalRender() {
Element ContainerBase::HorizontalRender() {
Elements elements;
for (auto& it : children_)
elements.push_back(it->Render());
@ -113,18 +203,18 @@ Element Container::HorizontalRender() {
return hbox(std::move(elements));
}
Element Container::TabRender() {
Component* active_child = ActiveChild();
Element ContainerBase::TabRender() {
Component active_child = ActiveChild();
if (active_child)
return active_child->Render();
return text(L"Empty container");
}
bool Container::OnMouseEvent(Event event) {
bool ContainerBase::OnMouseEvent(Event event) {
if (selector_)
return ActiveChild()->OnEvent(event);
for (Component* child : children_) {
for (Component& child : children_) {
if (child->OnEvent(event))
return true;
}

486
src/ftxui/component/container_test.cpp
View File

@ -1,287 +1,293 @@
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult, SuiteApiResolver
#include <memory> // for allocator
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult, SuiteApiResolver, TestFactoryImpl
#include <memory> // for __shared_ptr_access, shared_ptr, allocator
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/container.hpp"
#include "ftxui/screen/box.hpp" // for ftxui
#include "gtest/gtest_pred_impl.h" // for AssertionResult, EXPECT_EQ, EXPEC...
#include "gtest/gtest_pred_impl.h" // for AssertionResult, EXPECT_EQ, EXPECT_FALSE, EXPECT_TRUE, Test, TEST
using namespace ftxui;
TEST(ContainerTest, HorizontalEvent) {
auto container = Container::Horizontal();
Component c0, c1, c2;
container.Add(&c0);
container.Add(&c1);
container.Add(&c2);
auto container = ContainerBase::Horizontal();
auto c0 = Container::Horizontal({});
auto c1 = Container::Horizontal({});
auto c2 = Container::Horizontal({});
container->Add(c0);
container->Add(c1);
container->Add(c2);
// With arrow key.
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::ArrowRight);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::ArrowRight);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::ArrowRight);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::ArrowLeft);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::ArrowLeft);
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::ArrowLeft);
EXPECT_EQ(container.ActiveChild(), &c0);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::ArrowRight);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::ArrowRight);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::ArrowRight);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::ArrowLeft);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::ArrowLeft);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::ArrowLeft);
EXPECT_EQ(container->ActiveChild(), c0);
// With arrow key in the wrong dimension.
container.OnEvent(Event::ArrowUp);
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::ArrowDown);
EXPECT_EQ(container.ActiveChild(), &c0);
container->OnEvent(Event::ArrowUp);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::ArrowDown);
EXPECT_EQ(container->ActiveChild(), c0);
// With vim like characters.
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::Character('l'));
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::Character('l'));
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::Character('l'));
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::Character('h'));
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::Character('h'));
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::Character('h'));
EXPECT_EQ(container.ActiveChild(), &c0);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::Character('l'));
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::Character('l'));
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::Character('l'));
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::Character('h'));
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::Character('h'));
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::Character('h'));
EXPECT_EQ(container->ActiveChild(), c0);
// With vim like characters in the wrong direction.
container.OnEvent(Event::Character('j'));
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::Character('k'));
EXPECT_EQ(container.ActiveChild(), &c0);
container->OnEvent(Event::Character('j'));
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::Character('k'));
EXPECT_EQ(container->ActiveChild(), c0);
// With tab characters.
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::TabReverse);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::TabReverse);
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::TabReverse);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::TabReverse);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::TabReverse);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::TabReverse);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::TabReverse);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::TabReverse);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::TabReverse);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::TabReverse);
}
TEST(ContainerTest, VerticalEvent) {
auto container = Container::Vertical();
Component c0, c1, c2;
container.Add(&c0);
container.Add(&c1);
container.Add(&c2);
auto container = ContainerBase::Vertical();
auto c0 = Container::Horizontal({});
auto c1 = Container::Horizontal({});
auto c2 = Container::Horizontal({});
container->Add(c0);
container->Add(c1);
container->Add(c2);
// With arrow key.
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::ArrowDown);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::ArrowDown);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::ArrowDown);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::ArrowUp);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::ArrowUp);
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::ArrowUp);
EXPECT_EQ(container.ActiveChild(), &c0);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::ArrowDown);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::ArrowDown);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::ArrowDown);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::ArrowUp);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::ArrowUp);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::ArrowUp);
EXPECT_EQ(container->ActiveChild(), c0);
// With arrow key in the wrong dimension.
container.OnEvent(Event::ArrowLeft);
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::ArrowRight);
EXPECT_EQ(container.ActiveChild(), &c0);
container->OnEvent(Event::ArrowLeft);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::ArrowRight);
EXPECT_EQ(container->ActiveChild(), c0);
// With vim like characters.
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::Character('j'));
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::Character('j'));
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::Character('j'));
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::Character('k'));
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::Character('k'));
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::Character('k'));
EXPECT_EQ(container.ActiveChild(), &c0);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::Character('j'));
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::Character('j'));
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::Character('j'));
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::Character('k'));
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::Character('k'));
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::Character('k'));
EXPECT_EQ(container->ActiveChild(), c0);
// With vim like characters in the wrong direction.
container.OnEvent(Event::Character('h'));
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::Character('l'));
EXPECT_EQ(container.ActiveChild(), &c0);
container->OnEvent(Event::Character('h'));
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::Character('l'));
EXPECT_EQ(container->ActiveChild(), c0);
// With tab characters.
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::Tab);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::TabReverse);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::TabReverse);
EXPECT_EQ(container.ActiveChild(), &c0);
container.OnEvent(Event::TabReverse);
EXPECT_EQ(container.ActiveChild(), &c2);
container.OnEvent(Event::TabReverse);
EXPECT_EQ(container.ActiveChild(), &c1);
container.OnEvent(Event::TabReverse);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::Tab);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::TabReverse);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::TabReverse);
EXPECT_EQ(container->ActiveChild(), c0);
container->OnEvent(Event::TabReverse);
EXPECT_EQ(container->ActiveChild(), c2);
container->OnEvent(Event::TabReverse);
EXPECT_EQ(container->ActiveChild(), c1);
container->OnEvent(Event::TabReverse);
}
TEST(ContainerTest, SetActiveChild) {
auto container = Container::Horizontal();
Component c0, c1, c2;
container.Add(&c0);
container.Add(&c1);
container.Add(&c2);
auto container = ContainerBase::Horizontal();
auto c0 = Container::Horizontal({});
auto c1 = Container::Horizontal({});
auto c2 = Container::Horizontal({});
container->Add(c0);
container->Add(c1);
container->Add(c2);
EXPECT_EQ(container.ActiveChild(), &c0);
EXPECT_TRUE(c0.Focused());
EXPECT_TRUE(c0.Active());
EXPECT_FALSE(c1.Focused());
EXPECT_FALSE(c1.Active());
EXPECT_FALSE(c2.Focused());
EXPECT_FALSE(c2.Active());
EXPECT_EQ(container->ActiveChild(), c0);
EXPECT_TRUE(c0->Focused());
EXPECT_TRUE(c0->Active());
EXPECT_FALSE(c1->Focused());
EXPECT_FALSE(c1->Active());
EXPECT_FALSE(c2->Focused());
EXPECT_FALSE(c2->Active());
container.SetActiveChild(&c0);
EXPECT_EQ(container.ActiveChild(), &c0);
EXPECT_TRUE(c0.Focused());
EXPECT_TRUE(c0.Active());
EXPECT_FALSE(c1.Focused());
EXPECT_FALSE(c1.Active());
EXPECT_FALSE(c2.Focused());
EXPECT_FALSE(c2.Active());
container->SetActiveChild(c0);
EXPECT_EQ(container->ActiveChild(), c0);
EXPECT_TRUE(c0->Focused());
EXPECT_TRUE(c0->Active());
EXPECT_FALSE(c1->Focused());
EXPECT_FALSE(c1->Active());
EXPECT_FALSE(c2->Focused());
EXPECT_FALSE(c2->Active());
container.SetActiveChild(&c1);
EXPECT_EQ(container.ActiveChild(), &c1);
EXPECT_FALSE(c0.Focused());
EXPECT_FALSE(c0.Active());
EXPECT_TRUE(c1.Focused());
EXPECT_TRUE(c1.Active());
EXPECT_FALSE(c2.Focused());
EXPECT_FALSE(c2.Active());
container->SetActiveChild(c1);
EXPECT_EQ(container->ActiveChild(), c1);
EXPECT_FALSE(c0->Focused());
EXPECT_FALSE(c0->Active());
EXPECT_TRUE(c1->Focused());
EXPECT_TRUE(c1->Active());
EXPECT_FALSE(c2->Focused());
EXPECT_FALSE(c2->Active());
container.SetActiveChild(&c2);
EXPECT_EQ(container.ActiveChild(), &c2);
EXPECT_FALSE(c0.Focused());
EXPECT_FALSE(c0.Active());
EXPECT_FALSE(c1.Focused());
EXPECT_FALSE(c1.Active());
EXPECT_TRUE(c2.Focused());
EXPECT_TRUE(c2.Active());
container->SetActiveChild(c2);
EXPECT_EQ(container->ActiveChild(), c2);
EXPECT_FALSE(c0->Focused());
EXPECT_FALSE(c0->Active());
EXPECT_FALSE(c1->Focused());
EXPECT_FALSE(c1->Active());
EXPECT_TRUE(c2->Focused());
EXPECT_TRUE(c2->Active());
container.SetActiveChild(&c0);
EXPECT_EQ(container.ActiveChild(), &c0);
EXPECT_TRUE(c0.Focused());
EXPECT_TRUE(c0.Active());
EXPECT_FALSE(c1.Focused());
EXPECT_FALSE(c1.Active());
EXPECT_FALSE(c2.Focused());
EXPECT_FALSE(c2.Active());
container->SetActiveChild(c0);
EXPECT_EQ(container->ActiveChild(), c0);
EXPECT_TRUE(c0->Focused());
EXPECT_TRUE(c0->Active());
EXPECT_FALSE(c1->Focused());
EXPECT_FALSE(c1->Active());
EXPECT_FALSE(c2->Focused());
EXPECT_FALSE(c2->Active());
}
TEST(ContainerTest, TakeFocus) {
auto c = Container::Horizontal();
auto c1 = Container::Vertical();
auto c2 = Container::Vertical();
auto c3 = Container::Vertical();
auto c11 = Container::Horizontal();
auto c12 = Container::Horizontal();
auto c13 = Container::Horizontal();
auto c21 = Container::Horizontal();
auto c22 = Container::Horizontal();
auto c23 = Container::Horizontal();
auto c = ContainerBase::Horizontal();
auto c1 = ContainerBase::Vertical();
auto c2 = ContainerBase::Vertical();
auto c3 = ContainerBase::Vertical();
auto c11 = ContainerBase::Horizontal();
auto c12 = ContainerBase::Horizontal();
auto c13 = ContainerBase::Horizontal();
auto c21 = ContainerBase::Horizontal();
auto c22 = ContainerBase::Horizontal();
auto c23 = ContainerBase::Horizontal();
c.Add(&c1);
c.Add(&c2);
c.Add(&c3);
c1.Add(&c11);
c1.Add(&c12);
c1.Add(&c13);
c2.Add(&c21);
c2.Add(&c22);
c2.Add(&c23);
c->Add(c1);
c->Add(c2);
c->Add(c3);
c1->Add(c11);
c1->Add(c12);
c1->Add(c13);
c2->Add(c21);
c2->Add(c22);
c2->Add(c23);
EXPECT_TRUE(c.Focused());
EXPECT_TRUE(c1.Focused());
EXPECT_FALSE(c2.Focused());
EXPECT_TRUE(c11.Focused());
EXPECT_FALSE(c12.Focused());
EXPECT_FALSE(c13.Focused());
EXPECT_FALSE(c21.Focused());
EXPECT_FALSE(c22.Focused());
EXPECT_FALSE(c23.Focused());
EXPECT_TRUE(c.Active());
EXPECT_TRUE(c1.Active());
EXPECT_FALSE(c2.Active());
EXPECT_TRUE(c11.Active());
EXPECT_FALSE(c12.Active());
EXPECT_FALSE(c13.Active());
EXPECT_TRUE(c21.Active());
EXPECT_FALSE(c22.Active());
EXPECT_FALSE(c23.Active());
EXPECT_TRUE(c->Focused());
EXPECT_TRUE(c1->Focused());
EXPECT_FALSE(c2->Focused());
EXPECT_TRUE(c11->Focused());
EXPECT_FALSE(c12->Focused());
EXPECT_FALSE(c13->Focused());
EXPECT_FALSE(c21->Focused());
EXPECT_FALSE(c22->Focused());
EXPECT_FALSE(c23->Focused());
EXPECT_TRUE(c->Active());
EXPECT_TRUE(c1->Active());
EXPECT_FALSE(c2->Active());
EXPECT_TRUE(c11->Active());
EXPECT_FALSE(c12->Active());
EXPECT_FALSE(c13->Active());
EXPECT_TRUE(c21->Active());
EXPECT_FALSE(c22->Active());
EXPECT_FALSE(c23->Active());
c22.TakeFocus();
EXPECT_TRUE(c.Focused());
EXPECT_FALSE(c1.Focused());
EXPECT_TRUE(c2.Focused());
EXPECT_FALSE(c11.Focused());
EXPECT_FALSE(c12.Focused());
EXPECT_FALSE(c13.Focused());
EXPECT_FALSE(c21.Focused());
EXPECT_TRUE(c22.Focused());
EXPECT_FALSE(c23.Focused());
EXPECT_TRUE(c.Active());
EXPECT_FALSE(c1.Active());
EXPECT_TRUE(c2.Active());
EXPECT_TRUE(c11.Active());
EXPECT_FALSE(c12.Active());
EXPECT_FALSE(c13.Active());
EXPECT_FALSE(c21.Active());
EXPECT_TRUE(c22.Active());
EXPECT_FALSE(c23.Active());
c22->TakeFocus();
EXPECT_TRUE(c->Focused());
EXPECT_FALSE(c1->Focused());
EXPECT_TRUE(c2->Focused());
EXPECT_FALSE(c11->Focused());
EXPECT_FALSE(c12->Focused());
EXPECT_FALSE(c13->Focused());
EXPECT_FALSE(c21->Focused());
EXPECT_TRUE(c22->Focused());
EXPECT_FALSE(c23->Focused());
EXPECT_TRUE(c->Active());
EXPECT_FALSE(c1->Active());
EXPECT_TRUE(c2->Active());
EXPECT_TRUE(c11->Active());
EXPECT_FALSE(c12->Active());
EXPECT_FALSE(c13->Active());
EXPECT_FALSE(c21->Active());
EXPECT_TRUE(c22->Active());
EXPECT_FALSE(c23->Active());
c1.TakeFocus();
EXPECT_TRUE(c.Focused());
EXPECT_TRUE(c1.Focused());
EXPECT_FALSE(c2.Focused());
EXPECT_TRUE(c11.Focused());
EXPECT_FALSE(c12.Focused());
EXPECT_FALSE(c13.Focused());
EXPECT_FALSE(c21.Focused());
EXPECT_FALSE(c22.Focused());
EXPECT_FALSE(c23.Focused());
EXPECT_TRUE(c.Active());
EXPECT_TRUE(c1.Active());
EXPECT_FALSE(c2.Active());
EXPECT_TRUE(c11.Active());
EXPECT_FALSE(c12.Active());
EXPECT_FALSE(c13.Active());
EXPECT_FALSE(c21.Active());
EXPECT_TRUE(c22.Active());
EXPECT_FALSE(c23.Active());
c1->TakeFocus();
EXPECT_TRUE(c->Focused());
EXPECT_TRUE(c1->Focused());
EXPECT_FALSE(c2->Focused());
EXPECT_TRUE(c11->Focused());
EXPECT_FALSE(c12->Focused());
EXPECT_FALSE(c13->Focused());
EXPECT_FALSE(c21->Focused());
EXPECT_FALSE(c22->Focused());
EXPECT_FALSE(c23->Focused());
EXPECT_TRUE(c->Active());
EXPECT_TRUE(c1->Active());
EXPECT_FALSE(c2->Active());
EXPECT_TRUE(c11->Active());
EXPECT_FALSE(c12->Active());
EXPECT_FALSE(c13->Active());
EXPECT_FALSE(c21->Active());
EXPECT_TRUE(c22->Active());
EXPECT_FALSE(c23->Active());
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

7
src/ftxui/component/event.cpp
View File

@ -1,7 +1,8 @@
#include "ftxui/component/event.hpp"
#include <utility> // for move
#include "ftxui/component/mouse.hpp"
#include "ftxui/screen/string.hpp"
#include "ftxui/component/event.hpp"
#include "ftxui/component/mouse.hpp" // for Mouse
#include "ftxui/screen/string.hpp" // for to_wstring
namespace ftxui {

94
src/ftxui/component/input.cpp
View File

@ -1,39 +1,74 @@
#include <algorithm> // for max, min
#include <memory> // for shared_ptr
#include <string> // for wstring, allocator, basic_string
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
#include "ftxui/component/event.hpp" // for Event, Event::ArrowLeft, Event::ArrowRight, Event::Backspace, Event::Custom, Event::Delete, Event::End, Event::Home, Event::Return
#include "ftxui/component/input.hpp"
#include <algorithm>
#include <memory>
#include "ftxui/component/captured_mouse.hpp"
#include "ftxui/component/mouse.hpp"
#include "ftxui/component/screen_interactive.hpp"
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Pressed
#include "ftxui/component/screen_interactive.hpp" // for Component
namespace ftxui {
/// @brief An input box for editing text.
/// @param content The editable content.
/// @param placeholder The text displayed when content is still empty.
/// @ingroup component
/// @see InputBase
///
/// ### Example
///
/// ```cpp
/// auto screen = ScreenInteractive::FitComponent();
/// std::wstring content= L"";
/// std::wstring placeholder = L"placeholder";
/// Component input = Input(&content, &placeholder);
/// screen.Loop(input);
/// ```
///
/// ### Output
///
/// ```bash
/// placeholder
/// ```
Component Input(StringRef content, ConstStringRef placeholder) {
return Make<InputBase>(content, placeholder);
}
// static
InputBase* InputBase::From(Component component) {
return static_cast<InputBase*>(component.get());
}
InputBase::InputBase(StringRef content, ConstStringRef placeholder)
: content_(content), placeholder_(placeholder) {}
// Component implementation.
Element Input::Render() {
cursor_position = std::max(0, std::min<int>(content.size(), cursor_position));
Element InputBase::Render() {
cursor_position =
std::max(0, std::min<int>(content_->size(), cursor_position));
auto main_decorator = flex | size(HEIGHT, EQUAL, 1);
bool is_focused = Focused();
// Placeholder.
if (content.size() == 0) {
// placeholder.
if (content_->size() == 0) {
if (is_focused)
return text(placeholder) | focus | dim | inverted | main_decorator |
return text(*placeholder_) | focus | dim | inverted | main_decorator |
reflect(input_box_);
else
return text(placeholder) | dim | main_decorator | reflect(input_box_);
return text(*placeholder_) | dim | main_decorator | reflect(input_box_);
}
// Not focused.
if (!is_focused)
return text(content) | main_decorator | reflect(input_box_);
return text(*content_) | main_decorator | reflect(input_box_);
std::wstring part_before_cursor = content.substr(0, cursor_position);
std::wstring part_at_cursor = cursor_position < (int)content.size()
? content.substr(cursor_position, 1)
std::wstring part_before_cursor = content_->substr(0, cursor_position);
std::wstring part_at_cursor = cursor_position < (int)content_->size()
? content_->substr(cursor_position, 1)
: L" ";
std::wstring part_after_cursor = cursor_position < (int)content.size() - 1
? content.substr(cursor_position + 1)
std::wstring part_after_cursor = cursor_position < (int)content_->size() - 1
? content_->substr(cursor_position + 1)
: L"";
auto focused = is_focused ? focus : select;
@ -47,8 +82,9 @@ Element Input::Render() {
// clang-format on
}
bool Input::OnEvent(Event event) {
cursor_position = std::max(0, std::min<int>(content.size(), cursor_position));
bool InputBase::OnEvent(Event event) {
cursor_position =
std::max(0, std::min<int>(content_->size(), cursor_position));
if (event.is_mouse())
return OnMouseEvent(event);
@ -59,7 +95,7 @@ bool Input::OnEvent(Event event) {
if (event == Event::Backspace) {
if (cursor_position == 0)
return false;
content.erase(cursor_position - 1, 1);
content_->erase(cursor_position - 1, 1);
cursor_position--;
on_change();
return true;
@ -67,9 +103,9 @@ bool Input::OnEvent(Event event) {
// Delete
if (event == Event::Delete) {
if (cursor_position == int(content.size()))
if (cursor_position == int(content_->size()))
return false;
content.erase(cursor_position, 1);
content_->erase(cursor_position, 1);
on_change();
return true;
}
@ -89,7 +125,7 @@ bool Input::OnEvent(Event event) {
return true;
}
if (event == Event::ArrowRight && cursor_position < (int)content.size()) {
if (event == Event::ArrowRight && cursor_position < (int)content_->size()) {
cursor_position++;
return true;
}
@ -100,13 +136,13 @@ bool Input::OnEvent(Event event) {
}
if (event == Event::End) {
cursor_position = (int)content.size();
cursor_position = (int)content_->size();
return true;
}
// Content
if (event.is_character()) {
content.insert(cursor_position, 1, event.character());
content_->insert(cursor_position, 1, event.character());
cursor_position++;
on_change();
return true;
@ -114,7 +150,7 @@ bool Input::OnEvent(Event event) {
return false;
}
bool Input::OnMouseEvent(Event event) {
bool InputBase::OnMouseEvent(Event event) {
if (!CaptureMouse(event))
return false;
if (!input_box_.Contain(event.mouse().x, event.mouse().y))
@ -127,7 +163,7 @@ bool Input::OnMouseEvent(Event event) {
int new_cursor_position =
cursor_position + event.mouse().x - cursor_box_.x_min;
new_cursor_position =
std::max(0, std::min<int>(content.size(), new_cursor_position));
std::max(0, std::min<int>(content_->size(), new_cursor_position));
if (cursor_position != new_cursor_position) {
cursor_position = new_cursor_position;
on_change();

223
src/ftxui/component/input_test.cpp
View File

@ -1,159 +1,182 @@
#include "ftxui/component/input.hpp"
#include "ftxui/component/event.hpp"
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult, SuiteApiResolver, TestFactoryImpl
#include <memory> // for __shared_ptr_access
#include <string> // for wstring, allocator
#include "gtest/gtest.h"
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/event.hpp" // for Event, Event::ArrowLeft, Event::ArrowRight, Event::Backspace, Event::Delete, Event::End, Event::Home
#include "ftxui/component/input.hpp"
#include "gtest/gtest_pred_impl.h" // for Test, EXPECT_EQ, TEST
using namespace ftxui;
TEST(InputTest, Init) {
Input input;
std::wstring content;
std::wstring placeholder;
Component input = Input(&content, &placeholder);
EXPECT_EQ(input.content, L"");
EXPECT_EQ(input.placeholder, L"");
EXPECT_EQ(input.cursor_position, 0);
EXPECT_EQ(InputBase::From(input)->cursor_position, 0);
}
TEST(InputTest, Type) {
Input input;
std::wstring content;
std::wstring placeholder;
Component input = Input(&content, &placeholder);
input.OnEvent(Event::Character('a'));
EXPECT_EQ(input.content, L"a");
EXPECT_EQ(input.cursor_position, 1u);
input->OnEvent(Event::Character('a'));
EXPECT_EQ(content, L"a");
EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
input.OnEvent(Event::Character('b'));
EXPECT_EQ(input.content, L"ab");
EXPECT_EQ(input.cursor_position, 2u);
input->OnEvent(Event::Character('b'));
EXPECT_EQ(content, L"ab");
EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
}
TEST(InputTest, Arrow) {
Input input;
std::wstring content;
std::wstring placeholder;
Component input = Input(&content, &placeholder);
input.OnEvent(Event::Character('a'));
input.OnEvent(Event::Character('b'));
input.OnEvent(Event::Character('c'));
input->OnEvent(Event::Character('a'));
input->OnEvent(Event::Character('b'));
input->OnEvent(Event::Character('c'));
EXPECT_EQ(input.cursor_position, 3u);
EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
input.OnEvent(Event::ArrowLeft);
EXPECT_EQ(input.cursor_position, 2u);
input->OnEvent(Event::ArrowLeft);
EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
input.OnEvent(Event::ArrowLeft);
EXPECT_EQ(input.cursor_position, 1u);
input->OnEvent(Event::ArrowLeft);
EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
input.OnEvent(Event::ArrowLeft);
EXPECT_EQ(input.cursor_position, 0u);
input->OnEvent(Event::ArrowLeft);
EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
input.OnEvent(Event::ArrowLeft);
EXPECT_EQ(input.cursor_position, 0u);
input->OnEvent(Event::ArrowLeft);
EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
input.OnEvent(Event::ArrowRight);
EXPECT_EQ(input.cursor_position, 1u);
input->OnEvent(Event::ArrowRight);
EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
input.OnEvent(Event::ArrowRight);
EXPECT_EQ(input.cursor_position, 2u);
input->OnEvent(Event::ArrowRight);
EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
input.OnEvent(Event::ArrowRight);
EXPECT_EQ(input.cursor_position, 3u);
input->OnEvent(Event::ArrowRight);
EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
input.OnEvent(Event::ArrowRight);
EXPECT_EQ(input.cursor_position, 3u);
input->OnEvent(Event::ArrowRight);
EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
}
TEST(InputTest, Insert) {
Input input;
std::wstring content;
std::wstring placeholder;
Component input = Input(&content, &placeholder);
input.OnEvent(Event::Character('a'));
input.OnEvent(Event::Character('b'));
input.OnEvent(Event::Character('c'));
EXPECT_EQ(input.content, L"abc");
input->OnEvent(Event::Character('a'));
input->OnEvent(Event::Character('b'));
input->OnEvent(Event::Character('c'));
EXPECT_EQ(content, L"abc");
input.OnEvent(Event::ArrowLeft);
input.OnEvent(Event::ArrowLeft);
input.OnEvent(Event::Character('-'));
EXPECT_EQ(input.content, L"a-bc");
input->OnEvent(Event::ArrowLeft);
input->OnEvent(Event::ArrowLeft);
input->OnEvent(Event::Character('-'));
EXPECT_EQ(content, L"a-bc");
input.OnEvent(Event::ArrowLeft);
input.OnEvent(Event::Character('-'));
EXPECT_EQ(input.content, L"a--bc");
input->OnEvent(Event::ArrowLeft);
input->OnEvent(Event::Character('-'));
EXPECT_EQ(content, L"a--bc");
input.OnEvent(Event::ArrowLeft);
input.OnEvent(Event::ArrowLeft);
input.OnEvent(Event::ArrowLeft);
input.OnEvent(Event::Character('-'));
EXPECT_EQ(input.content, L"-a--bc");
input->OnEvent(Event::ArrowLeft);
input->OnEvent(Event::ArrowLeft);
input->OnEvent(Event::ArrowLeft);
input->OnEvent(Event::Character('-'));
EXPECT_EQ(content, L"-a--bc");
}
TEST(InputTest, Home) {
Input input;
std::wstring content;
std::wstring placeholder;
Component input = Input(&content, &placeholder);
input.OnEvent(Event::Character('a'));
input.OnEvent(Event::Character('b'));
input.OnEvent(Event::Character('c'));
EXPECT_EQ(input.content, L"abc");
input->OnEvent(Event::Character('a'));
input->OnEvent(Event::Character('b'));
input->OnEvent(Event::Character('c'));
EXPECT_EQ(content, L"abc");
EXPECT_EQ(input.cursor_position, 3u);
input.OnEvent(Event::Home);
EXPECT_EQ(input.cursor_position, 0u);
EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
input->OnEvent(Event::Home);
EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
input.OnEvent(Event::Character('-'));
EXPECT_EQ(input.content, L"-abc");
input->OnEvent(Event::Character('-'));
EXPECT_EQ(content, L"-abc");
}
TEST(InputTest, End) {
Input input;
std::wstring content;
std::wstring placeholder;
Component input = Input(&content, &placeholder);
input.OnEvent(Event::Character('a'));
input.OnEvent(Event::Character('b'));
input.OnEvent(Event::Character('c'));
input->OnEvent(Event::Character('a'));
input->OnEvent(Event::Character('b'));
input->OnEvent(Event::Character('c'));
input.OnEvent(Event::ArrowLeft);
input.OnEvent(Event::ArrowLeft);
input->OnEvent(Event::ArrowLeft);
input->OnEvent(Event::ArrowLeft);
EXPECT_EQ(input.cursor_position, 1u);
input.OnEvent(Event::End);
EXPECT_EQ(input.cursor_position, 3u);
EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
input->OnEvent(Event::End);
EXPECT_EQ(InputBase::From(input)->cursor_position, 3u);
}
TEST(InputTest, Delete) {
Input input;
std::wstring content;
std::wstring placeholder;
Component input = Input(&content, &placeholder);
input.OnEvent(Event::Character('a'));
input.OnEvent(Event::Character('b'));
input.OnEvent(Event::Character('c'));
input.OnEvent(Event::ArrowLeft);
input->OnEvent(Event::Character('a'));
input->OnEvent(Event::Character('b'));
input->OnEvent(Event::Character('c'));
input->OnEvent(Event::ArrowLeft);
EXPECT_EQ(input.content, L"abc");
EXPECT_EQ(input.cursor_position, 2u);
EXPECT_EQ(content, L"abc");
EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
input.OnEvent(Event::Delete);
EXPECT_EQ(input.content, L"ab");
EXPECT_EQ(input.cursor_position, 2u);
input->OnEvent(Event::Delete);
EXPECT_EQ(content, L"ab");
EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
input.OnEvent(Event::Delete);
EXPECT_EQ(input.content, L"ab");
EXPECT_EQ(input.cursor_position, 2u);
input->OnEvent(Event::Delete);
EXPECT_EQ(content, L"ab");
EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
}
TEST(InputTest, Backspace) {
Input input;
std::wstring content;
std::wstring placeholder;
Component input = Input(&content, &placeholder);
input.OnEvent(Event::Character('a'));
input.OnEvent(Event::Character('b'));
input.OnEvent(Event::Character('c'));
input.OnEvent(Event::ArrowLeft);
input->OnEvent(Event::Character('a'));
input->OnEvent(Event::Character('b'));
input->OnEvent(Event::Character('c'));
input->OnEvent(Event::ArrowLeft);
EXPECT_EQ(input.content, L"abc");
EXPECT_EQ(input.cursor_position, 2u);
EXPECT_EQ(content, L"abc");
EXPECT_EQ(InputBase::From(input)->cursor_position, 2u);
input.OnEvent(Event::Backspace);
EXPECT_EQ(input.content, L"ac");
EXPECT_EQ(input.cursor_position, 1u);
input->OnEvent(Event::Backspace);
EXPECT_EQ(content, L"ac");
EXPECT_EQ(InputBase::From(input)->cursor_position, 1u);
input.OnEvent(Event::Backspace);
EXPECT_EQ(input.content, L"c");
EXPECT_EQ(input.cursor_position, 0u);
input->OnEvent(Event::Backspace);
EXPECT_EQ(content, L"c");
EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
input.OnEvent(Event::Backspace);
EXPECT_EQ(input.content, L"c");
EXPECT_EQ(input.cursor_position, 0u);
input->OnEvent(Event::Backspace);
EXPECT_EQ(content, L"c");
EXPECT_EQ(InputBase::From(input)->cursor_position, 0u);
}
// Copyright 2021 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.

95
src/ftxui/component/menu.cpp
View File

@ -1,23 +1,62 @@
#include <stddef.h> // for size_t
#include <algorithm> // for max, min
#include <memory> // for shared_ptr, allocator_traits<>::value_type
#include <utility> // for move
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
#include "ftxui/component/event.hpp" // for Event, Event::ArrowDown, Event::ArrowUp, Event::Return, Event::Tab, Event::TabReverse
#include "ftxui/component/menu.hpp"
#include <stddef.h>
#include <algorithm>
#include <memory>
#include <utility>
#include "ftxui/component/captured_mouse.hpp"
#include "ftxui/component/mouse.hpp"
#include "ftxui/component/screen_interactive.hpp"
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Released
#include "ftxui/component/screen_interactive.hpp" // for Component
namespace ftxui {
Element Menu::Render() {
/// @brief A list of text. The focused element is selected.
/// @param entries The list of entries in the menu.
/// @param selected The index of the currently selected element.
/// @ingroup component
/// @see MenuBase
///
/// ### Example
///
/// ```cpp
/// auto screen = ScreenInteractive::TerminalOutput();
/// std::vector<std::wstring> entries = {
/// L"entry 1",
/// L"entry 2",
/// L"entry 3",
/// };
/// int selected = 0;
/// auto menu = Menu(&entries, &selected);
/// screen.Loop(menu);
/// ```
///
/// ### Output
///
/// ```bash
/// > entry 1
/// entry 2
/// entry 3
/// ```
Component Menu(const std::vector<std::wstring>* entries, int* selected) {
return Make<MenuBase>(entries, selected);
}
// static
MenuBase* MenuBase::From(Component component) {
return static_cast<MenuBase*>(component.get());
}
MenuBase::MenuBase(const std::vector<std::wstring>* entries, int* selected)
: entries_(entries), selected_(selected) {}
Element MenuBase::Render() {
Elements elements;
bool is_menu_focused = Focused();
boxes_.resize(entries.size());
for (size_t i = 0; i < entries.size(); ++i) {
boxes_.resize(entries_->size());
for (size_t i = 0; i < entries_->size(); ++i) {
bool is_focused = (focused == int(i)) && is_menu_focused;
bool is_selected = (selected == int(i));
bool is_selected = (*selected_ == int(i));
auto style = is_selected
? (is_focused ? selected_focused_style : selected_style)
@ -26,13 +65,13 @@ Element Menu::Render() {
: is_menu_focused ? focus
: select;
auto icon = is_selected ? L"> " : L" ";
elements.push_back(text(icon + entries[i]) | style | focus_management |
elements.push_back(text(icon + entries_->at(i)) | style | focus_management |
reflect(boxes_[i]));
}
return vbox(std::move(elements));
}
bool Menu::OnEvent(Event event) {
bool MenuBase::OnEvent(Event event) {
if (!CaptureMouse(event))
return false;
if (event.is_mouse())
@ -41,20 +80,20 @@ bool Menu::OnEvent(Event event) {
if (!Focused())
return false;
int old_selected = selected;
int old_selected = *selected_;
if (event == Event::ArrowUp || event == Event::Character('k'))
selected--;
(*selected_)--;
if (event == Event::ArrowDown || event == Event::Character('j'))
selected++;
if (event == Event::Tab && entries.size())
selected = (selected + 1) % entries.size();
if (event == Event::TabReverse && entries.size())
selected = (selected + entries.size() - 1) % entries.size();
(*selected_)++;
if (event == Event::Tab && entries_->size())
*selected_ = (*selected_ + 1) % entries_->size();
if (event == Event::TabReverse && entries_->size())
*selected_ = (*selected_ + entries_->size() - 1) % entries_->size();
selected = std::max(0, std::min(int(entries.size()) - 1, selected));
*selected_ = std::max(0, std::min(int(entries_->size()) - 1, *selected_));
if (selected != old_selected) {
focused = selected;
if (*selected_ != old_selected) {
focused = *selected_;
on_change();
return true;
}
@ -67,7 +106,7 @@ bool Menu::OnEvent(Event event) {
return false;
}
bool Menu::OnMouseEvent(Event event) {
bool MenuBase::OnMouseEvent(Event event) {
if (!CaptureMouse(event))
return false;
for (int i = 0; i < boxes_.size(); ++i) {
@ -78,8 +117,8 @@ bool Menu::OnMouseEvent(Event event) {
focused = i;
if (event.mouse().button == Mouse::Left &&
event.mouse().motion == Mouse::Released) {
if (selected != i) {
selected = i;
if (*selected_ != i) {
*selected_ = i;
on_change();
}
return true;

90
src/ftxui/component/radiobox.cpp
View File

@ -1,36 +1,76 @@
#include <stddef.h> // for size_t
#include <algorithm> // for max, min
#include <functional> // for function
#include <memory> // for shared_ptr, allocator_traits<>::value_type
#include <utility> // for move
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
#include "ftxui/component/event.hpp" // for Event, Event::ArrowDown, Event::ArrowUp, Event::Return, Event::Tab, Event::TabReverse
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Pressed
#include "ftxui/component/radiobox.hpp"
#include <stddef.h>
#include <algorithm>
#include <functional>
#include <memory>
#include <utility>
#include "ftxui/component/captured_mouse.hpp"
#include "ftxui/component/mouse.hpp"
#include "ftxui/component/screen_interactive.hpp"
#include "ftxui/component/screen_interactive.hpp" // for Component
namespace ftxui {
Element RadioBox::Render() {
/// @brief A list of element, where only one can be selected.
/// @param entries The list of entries in the list.
/// @param selected The index of the currently selected element.
/// @ingroup component
/// @see RadioboxBase
///
/// ### Example
///
/// ```cpp
/// auto screen = ScreenInteractive::TerminalOutput();
/// std::vector<std::wstring> entries = {
/// L"entry 1",
/// L"entry 2",
/// L"entry 3",
/// };
/// int selected = 0;
/// auto menu = Radiobox(&entries, &selected);
/// screen.Loop(menu);
/// ```
///
/// ### Output
///
/// ```bash
/// ◉ entry 1
/// ○ entry 2
/// ○ entry 3
/// ```
Component Radiobox(const std::vector<std::wstring>* entries, int* selected) {
return Make<RadioboxBase>(entries, selected);
}
// static
RadioboxBase* RadioboxBase::From(Component component) {
return static_cast<RadioboxBase*>(component.get());
}
RadioboxBase::RadioboxBase(const std::vector<std::wstring>* entries,
int* selected_)
: entries_(entries), selected_(selected_) {}
Element RadioboxBase::Render() {
std::vector<Element> elements;
bool is_focused = Focused();
boxes_.resize(entries.size());
for (size_t i = 0; i < entries.size(); ++i) {
boxes_.resize(entries_->size());
for (size_t i = 0; i < entries_->size(); ++i) {
auto style =
(focused == int(i) && is_focused) ? focused_style : unfocused_style;
auto focus_management = (focused != int(i)) ? nothing
: is_focused ? focus
: select;
const std::wstring& symbol = selected == int(i) ? checked : unchecked;
elements.push_back(hbox(text(symbol), text(entries[i]) | style) |
const std::wstring& symbol = *selected_ == int(i) ? checked : unchecked;
elements.push_back(hbox(text(symbol), text(entries_->at(i)) | style) |
focus_management | reflect(boxes_[i]));
}
return vbox(std::move(elements));
}
bool RadioBox::OnEvent(Event event) {
bool RadioboxBase::OnEvent(Event event) {
if (!CaptureMouse(event))
return false;
if (event.is_mouse())
@ -44,12 +84,12 @@ bool RadioBox::OnEvent(Event event) {
new_focused--;
if (event == Event::ArrowDown || event == Event::Character('j'))
new_focused++;
if (event == Event::Tab && entries.size())
new_focused = (new_focused + 1) % entries.size();
if (event == Event::TabReverse && entries.size())
new_focused = (new_focused + entries.size() - 1) % entries.size();
if (event == Event::Tab && entries_->size())
new_focused = (new_focused + 1) % entries_->size();
if (event == Event::TabReverse && entries_->size())
new_focused = (new_focused + entries_->size() - 1) % entries_->size();
new_focused = std::max(0, std::min(int(entries.size()) - 1, new_focused));
new_focused = std::max(0, std::min(int(entries_->size()) - 1, new_focused));
if (focused != new_focused) {
focused = new_focused;
@ -57,14 +97,14 @@ bool RadioBox::OnEvent(Event event) {
}
if (event == Event::Character(' ') || event == Event::Return) {
selected = focused;
*selected_ = focused;
on_change();
}
return false;
}
bool RadioBox::OnMouseEvent(Event event) {
bool RadioboxBase::OnMouseEvent(Event event) {
if (!CaptureMouse(event))
return false;
for (int i = 0; i < boxes_.size(); ++i) {
@ -78,8 +118,8 @@ bool RadioBox::OnMouseEvent(Event event) {
event.mouse().motion == Mouse::Pressed) {
cursor_position = i;
TakeFocus();
if (selected != i) {
selected = i;
if (*selected_ != i) {
*selected_ = i;
on_change();
}
return true;

156
src/ftxui/component/radiobox_test.cpp
View File

@ -1,7 +1,8 @@
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult, SuiteApiResolver, TestFactoryImpl
#include <memory> // for __shared_ptr_access, shared_ptr
#include "ftxui/component/event.hpp" // for Event, Event::ArrowDown, Event::ArrowUp, Event::Tab, Event::TabReverse
#include "ftxui/component/event.hpp" // for Event, Event::Return, Event::ArrowDown, Event::ArrowUp, Event::Tab, Event::TabReverse
#include "ftxui/component/mouse.hpp" // for ftxui
#include "ftxui/component/radiobox.hpp"
#include "gtest/gtest_pred_impl.h" // for EXPECT_EQ, Test, TEST
@ -9,76 +10,105 @@
using namespace ftxui;
TEST(RadioboxTest, Navigation) {
RadioBox radiobox;
radiobox.entries = {L"1", L"2", L"3"};
int selected = 0;
std::vector<std::wstring> entries = {L"1", L"2", L"3"};
auto radiobox = Radiobox(&entries, &selected);
// With arrow key.
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::ArrowDown);
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::ArrowDown);
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::ArrowDown);
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::ArrowUp);
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::ArrowUp);
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::ArrowUp);
EXPECT_EQ(radiobox.focused, 0);
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::ArrowDown);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::ArrowDown);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::ArrowDown);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::ArrowUp);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::ArrowUp);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::ArrowUp);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 0);
// With vim like characters.
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::Character('j'));
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::Character('j'));
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::Character('j'));
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::Character('k'));
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::Character('k'));
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::Character('k'));
EXPECT_EQ(radiobox.focused, 0);
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::Character('j'));
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::Character('j'));
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::Character('j'));
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::Character('k'));
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::Character('k'));
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::Character('k'));
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 0);
// With more entries
radiobox.entries = {L"1", L"2", L"3"};
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::ArrowDown);
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::ArrowDown);
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::ArrowDown);
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::ArrowUp);
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::ArrowUp);
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::ArrowUp);
EXPECT_EQ(radiobox.focused, 0);
entries = {L"1", L"2", L"3"};
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::ArrowDown);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::ArrowDown);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::ArrowDown);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::ArrowUp);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::ArrowUp);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::ArrowUp);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 0);
// With tab.
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::Tab);
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::Tab);
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::Tab);
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::Tab);
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::Tab);
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::TabReverse);
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::TabReverse);
EXPECT_EQ(radiobox.focused, 0);
radiobox.OnEvent(Event::TabReverse);
EXPECT_EQ(radiobox.focused, 2);
radiobox.OnEvent(Event::TabReverse);
EXPECT_EQ(radiobox.focused, 1);
radiobox.OnEvent(Event::TabReverse);
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::Tab);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::Tab);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::Tab);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::Tab);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::Tab);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::TabReverse);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::TabReverse);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 0);
radiobox->OnEvent(Event::TabReverse);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 2);
radiobox->OnEvent(Event::TabReverse);
radiobox->OnEvent(Event::Return);
EXPECT_EQ(selected, 1);
radiobox->OnEvent(Event::TabReverse);
radiobox->OnEvent(Event::Return);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.

78
src/ftxui/component/renderer.cpp Normal file
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@ -0,0 +1,78 @@
#include <functional> // for function
#include <memory> // for __shared_ptr_access
#include <utility> // for move
#include "ftxui/component/component.hpp" // for Component, Make, Renderer
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/dom/elements.hpp" // for Element
namespace ftxui {
/// @brief A component rendering Element from a function.
/// @ingroup component.
class RendererBase : public ComponentBase {
public:
// Access this interface from a Component
static RendererBase* From(Component component) {
return static_cast<RendererBase*>(component.get());
}
// Constructor.
RendererBase(std::function<Element()> render) : render_(std::move(render)) {}
~RendererBase() override = default;
// Component implementation.
Element Render() override { return render_(); }
protected:
std::function<Element()> render_;
};
/// @brief Return a component, using |render| to render its interface.
/// @param render The function drawing the interface.
/// @ingroup component
///
/// ### Example
///
/// ```cpp
/// auto screen = ScreenInteractive::TerminalOutput();
/// auto renderer = Renderer([] {
/// return text(L"My interface");
/// });
/// screen.Loop(renderer);
/// ```
Component Renderer(std::function<Element()> render) {
return Make<RendererBase>(std::move(render));
}
/// @brief Return a new Component, similar to |child|, but using |render| as the
/// Component::Render() event.
/// @param child The component to forward events to.
/// @param render The function drawing the interface.
/// @ingroup component
///
/// ### Example
///
/// ```cpp
/// auto screen = ScreenInteractive::TerminalOutput();
/// std::wstring label = "Click to quit";
/// auto button = Button(&label, screen.ExitLoopClosure());
/// auto renderer = Renderer(button, [&] {
/// return hbox({
/// text("A button:"),
/// button->Render(),
/// });
/// });
/// screen.Loop(renderer);
/// ```
Component Renderer(Component child, std::function<Element()> render) {
Component renderer = Renderer(std::move(render));
renderer->Add(std::move(child));
return renderer;
}
} // namespace ftxui
// Copyright 2021 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.

39
src/ftxui/component/screen_interactive.cpp
View File

@ -1,24 +1,23 @@
#include "ftxui/component/screen_interactive.hpp"
#include <stdio.h> // for fileno, stdin
#include <algorithm> // for copy, max, min
#include <csignal> // for signal, SIGINT
#include <csignal> // for signal, SIGINT, SIGWINCH
#include <cstdlib> // for exit, NULL
#include <iostream> // for cout, ostream
#include <stack> // for stack
#include <thread> // for thread
#include <utility> // for move
#include <vector> // for vector
#include <iostream> // for cout, ostream, basic_ostream, operator<<, endl, flush
#include <stack> // for stack
#include <thread> // for thread
#include <utility> // for move
#include <vector> // for vector
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
#include "ftxui/component/component.hpp" // for Component
#include "ftxui/component/event.hpp" // for Event
#include "ftxui/component/mouse.hpp" // for Mouse
#include "ftxui/component/receiver.hpp" // for ReceiverImpl
#include "ftxui/component/terminal_input_parser.hpp" // for TerminalInputPa...
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse, CapturedMouseInterface
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/event.hpp" // for Event
#include "ftxui/component/mouse.hpp" // for Mouse
#include "ftxui/component/receiver.hpp" // for ReceiverImpl, SenderImpl, MakeReceiver
#include "ftxui/component/screen_interactive.hpp"
#include "ftxui/component/terminal_input_parser.hpp" // for TerminalInputParser
#include "ftxui/dom/node.hpp" // for Node, Render
#include "ftxui/dom/requirement.hpp" // for Requirement
#include "ftxui/screen/terminal.hpp" // for Terminal::Dimen...
#include "ftxui/screen/terminal.hpp" // for Terminal::Dimensions, Terminal
#if defined(_WIN32)
#define DEFINE_CONSOLEV2_PROPERTIES
@ -31,8 +30,8 @@
#error Must be compiled in UNICODE mode
#endif
#else
#include <sys/select.h> // for select, FD_ISSET
#include <termios.h> // for tcsetattr, tcge...
#include <sys/select.h> // for select, FD_ISSET, FD_SET, FD_ZERO, fd_set
#include <termios.h> // for tcsetattr, tcgetattr, cc_t
#include <unistd.h> // for STDIN_FILENO, read
#endif
@ -110,7 +109,7 @@ void EventListener(std::atomic<bool>* quit, Sender<Event> out) {
char c;
while (!*quit) {
while(read(STDIN_FILENO, &c, 1), c)
while (read(STDIN_FILENO, &c, 1), c)
parser.Add(c);
emscripten_sleep(1);
@ -278,7 +277,7 @@ CapturedMouse ScreenInteractive::CaptureMouse() {
[this] { mouse_captured = false; });
}
void ScreenInteractive::Loop(Component* component) {
void ScreenInteractive::Loop(Component component) {
// Install a SIGINT handler and restore the old handler on exit.
auto old_sigint_handler = std::signal(SIGINT, OnExit);
on_exit_functions.push(
@ -417,7 +416,7 @@ void ScreenInteractive::Loop(Component* component) {
OnExit(0);
}
void ScreenInteractive::Draw(Component* component) {
void ScreenInteractive::Draw(Component component) {
auto document = component->Render();
int dimx = 0;
int dimy = 0;

82
src/ftxui/component/slider.cpp
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@ -1,21 +1,23 @@
#include "ftxui/component/slider.hpp"
#include <string> // for allocator
#include <utility> // for move
#include <memory>
#include <utility>
#include "ftxui/component/captured_mouse.hpp"
#include "ftxui/component/mouse.hpp"
#include "ftxui/component/screen_interactive.hpp"
#include "ftxui/dom/elements.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/color.hpp"
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
#include "ftxui/component/component.hpp" // for Make, Slider
#include "ftxui/component/component_base.hpp" // for ComponentBase
#include "ftxui/component/event.hpp" // for Event, Event::ArrowLeft, Event::ArrowRight
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Pressed, Mouse::Released
#include "ftxui/component/screen_interactive.hpp" // for Component
#include "ftxui/dom/elements.hpp" // for Element, text, color, operator|, xflex, gauge, dim, hbox, reflect, underlined, vcenter
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/color.hpp" // for Color, Color::GrayDark, Color::GrayLight
#include "ftxui/screen/string.hpp" // for StringRef
namespace ftxui {
template <class T>
class SliderImpl : public Component {
class SliderBase : public ComponentBase {
public:
SliderImpl(std::wstring label, T* value, T min, T max, T increment)
SliderBase(StringRef label, T* value, T min, T max, T increment)
: label_(label),
value_(value),
min_(min),
@ -27,7 +29,7 @@ class SliderImpl : public Component {
Focused() ? color(Color::GrayLight) : color(Color::GrayDark);
float percent = float(*value_ - min_) / float(max_ - min_);
return hbox({
text(label_) | dim | vcenter,
text(*label_) | dim | vcenter,
hbox({
text(L"["),
gauge(percent) | underlined | xflex | reflect(gauge_box_),
@ -53,7 +55,7 @@ class SliderImpl : public Component {
return true;
}
return Component::OnEvent(event);
return ComponentBase::OnEvent(event);
}
bool OnMouseEvent(Event event) {
@ -62,8 +64,7 @@ class SliderImpl : public Component {
return true;
}
if (box_.Contain(event.mouse().x, event.mouse().y) &&
CaptureMouse(event)) {
if (box_.Contain(event.mouse().x, event.mouse().y) && CaptureMouse(event)) {
TakeFocus();
}
@ -84,7 +85,7 @@ class SliderImpl : public Component {
}
private:
std::wstring label_;
StringRef label_;
T* value_;
T min_;
T max_;
@ -94,23 +95,44 @@ class SliderImpl : public Component {
CapturedMouse captured_mouse_;
};
/// @brief An horizontal slider.
/// @param label The name of the slider.
/// @param value The current value of the slider.
/// @param min The minimum value.
/// @param max The maximum value.
/// @param increment The increment when used by the cursor.
/// @ingroup component
///
/// ### Example
///
/// ```cpp
/// auto screen = ScreenInteractive::TerminalOutput();
/// int value = 50;
/// auto slider = Slider(L"Value:", &value, 0, 100, 1);
/// screen.Loop(slider);
/// ```
///
/// ### Output
///
/// ```bash
/// Value:[██████████████████████████ ]
/// ```
template <class T>
ComponentPtr Slider(std::wstring label, T* value, T min, T max, T increment) {
return std::make_unique<SliderImpl<T>>(std::move(label), value, min, max,
increment);
Component Slider(StringRef label, T* value, T min, T max, T increment) {
return Make<SliderBase<T>>(std::move(label), value, min, max, increment);
}
template ComponentPtr Slider(std::wstring label,
int* value,
int min,
int max,
int increment);
template Component Slider(StringRef label,
int* value,
int min,
int max,
int increment);
template ComponentPtr Slider(std::wstring label,
float* value,
float min,
float max,
float increment);
template Component Slider(StringRef label,
float* value,
float min,
float max,
float increment);
} // namespace ftxui

7
src/ftxui/component/terminal_input_parser.cpp
View File

@ -1,7 +1,10 @@
#include "ftxui/component/terminal_input_parser.hpp"
#include <utility>
#include "ftxui/component/event.hpp"
#include <algorithm> // for max
#include <memory> // for unique_ptr
#include <utility> // for move
#include "ftxui/component/event.hpp" // for Event
namespace ftxui {

5
src/ftxui/component/terminal_input_parser.hpp
View File

@ -5,11 +5,12 @@
#include <string> // for string
#include <vector> // for vector
#include "ftxui/component/event.hpp" // IWYU pragma: keep
#include "ftxui/component/event.hpp" // for Event (ptr only)
#include "ftxui/component/mouse.hpp" // for Mouse
#include "ftxui/component/receiver.hpp" // for SenderImpl
#include "ftxui/component/receiver.hpp" // for Sender
namespace ftxui {
struct Event;
// Parse a sequence of |char| accross |time|. Produces |Event|.
class TerminalInputParser {

9
src/ftxui/component/terminal_input_parser_test.cpp
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@ -1,9 +1,12 @@
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult, SuiteApiResolver, TestFactoryImpl
#include <algorithm> // for max
#include <memory> // for unique_ptr, allocator
#include "ftxui/component/event.hpp" // for Event, Event::Escape
#include "ftxui/component/receiver.hpp" // for MakeReceiver, ReceiverImpl
#include "ftxui/component/terminal_input_parser.hpp"
#include "gtest/gtest_pred_impl.h" // for AssertionResult, Test, Suite...
#include "gtest/gtest_pred_impl.h" // for AssertionResult, Test, EXPECT_EQ, EXPECT_TRUE, EXPECT_FALSE, TEST
using namespace ftxui;

58
src/ftxui/component/toggle.cpp
View File

@ -1,26 +1,38 @@
#include <stddef.h> // for size_t
#include <algorithm> // for max, min
#include <memory> // for shared_ptr, alloca...
#include <memory> // for shared_ptr, allocator_traits<>::value_type
#include <utility> // for move
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
#include "ftxui/component/event.hpp" // for Event, Event::ArrowLeft, Event::ArrowRight, Event::Return, Event::Tab, Event::TabReverse
#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Pressed
#include "ftxui/component/toggle.hpp"
namespace ftxui {
Element Toggle::Render() {
Component Toggle(const std::vector<std::wstring>* entries, int* selected) {
return Make<ToggleBase>(entries, selected);
}
// static
ToggleBase* ToggleBase::From(Component component) {
return static_cast<ToggleBase*>(component.get());
}
ToggleBase::ToggleBase(const std::vector<std::wstring>* entries, int* selected)
: entries_(entries), selected_(selected) {}
Element ToggleBase::Render() {
Elements children;
bool is_toggle_focused = Focused();
boxes_.resize(entries.size());
for (size_t i = 0; i < entries.size(); ++i) {
boxes_.resize(entries_->size());
for (size_t i = 0; i < entries_->size(); ++i) {
// Separator.
if (i != 0)
children.push_back(separator());
bool is_focused = (focused == int(i)) && is_toggle_focused;
bool is_selected = (selected == int(i));
bool is_selected = (*selected_ == int(i));
auto style = is_selected
? (is_focused ? selected_focused_style : selected_style)
@ -28,30 +40,30 @@ Element Toggle::Render() {
auto focus_management = !is_selected ? nothing
: is_toggle_focused ? focus
: select;
children.push_back(text(entries[i]) | style | focus_management |
children.push_back(text(entries_->at(i)) | style | focus_management |
reflect(boxes_[i]));
}
return hbox(std::move(children));
}
bool Toggle::OnEvent(Event event) {
bool ToggleBase::OnEvent(Event event) {
if (event.is_mouse())
return OnMouseEvent(event);
int old_selected = selected;
int old_selected = *selected_;
if (event == Event::ArrowLeft || event == Event::Character('h'))
selected--;
(*selected_)--;
if (event == Event::ArrowRight || event == Event::Character('l'))
selected++;
if (event == Event::Tab && entries.size())
selected = (selected + 1) % entries.size();
if (event == Event::TabReverse && entries.size())
selected = (selected + entries.size() - 1) % entries.size();
(*selected_)++;
if (event == Event::Tab && entries_->size())
*selected_ = (*selected_ + 1) % entries_->size();
if (event == Event::TabReverse && entries_->size())
*selected_ = (*selected_ + entries_->size() - 1) % entries_->size();
selected = std::max(0, std::min(int(entries.size()) - 1, selected));
*selected_ = std::max(0, std::min(int(entries_->size()) - 1, *selected_));
if (old_selected != selected) {
focused = selected;
if (old_selected != *selected_) {
focused = *selected_;
on_change();
return true;
}
@ -64,7 +76,7 @@ bool Toggle::OnEvent(Event event) {
return false;
}
bool Toggle::OnMouseEvent(Event event) {
bool ToggleBase::OnMouseEvent(Event event) {
if (!CaptureMouse(event))
return false;
for (int i = 0; i < boxes_.size(); ++i) {
@ -76,8 +88,8 @@ bool Toggle::OnMouseEvent(Event event) {
if (event.mouse().button == Mouse::Left &&
event.mouse().motion == Mouse::Pressed) {
TakeFocus();
if (selected != i) {
selected = i;
if (*selected_ != i) {
*selected_ = i;
on_change();
}
return true;

170
src/ftxui/component/toggle_test.cpp
View File

@ -1,5 +1,6 @@
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult, SuiteApiResolver, TestFactoryImpl
#include <memory> // for __shared_ptr_access, shared_ptr
#include "ftxui/component/event.hpp" // for Event, Event::ArrowLeft, Event::ArrowRight, Event::Return, Event::Tab, Event::TabReverse
#include "ftxui/component/mouse.hpp" // for ftxui
@ -9,131 +10,136 @@
using namespace ftxui;
TEST(ToggleTest, leftRightArrow) {
Toggle toggle;
std::vector<std::wstring> entries = {L"On", L"Off"};
int selected = 0;
auto toggle = Toggle(&entries, &selected);
// With arrow key.
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::ArrowRight);
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::ArrowRight);
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::ArrowLeft);
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::ArrowLeft);
EXPECT_EQ(toggle.selected, 0);
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::ArrowRight);
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::ArrowRight);
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::ArrowLeft);
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::ArrowLeft);
EXPECT_EQ(selected, 0);
// With vim like characters.
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::Character('l'));
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::Character('l'));
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::Character('h'));
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::Character('h'));
EXPECT_EQ(toggle.selected, 0);
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::Character('l'));
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::Character('l'));
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::Character('h'));
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::Character('h'));
EXPECT_EQ(selected, 0);
// With more entries
toggle.entries = {L"1", L"2", L"3"};
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::ArrowRight);
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::ArrowRight);
EXPECT_EQ(toggle.selected, 2);
toggle.OnEvent(Event::ArrowRight);
EXPECT_EQ(toggle.selected, 2);
toggle.OnEvent(Event::ArrowLeft);
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::ArrowLeft);
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::ArrowLeft);
EXPECT_EQ(toggle.selected, 0);
entries = {L"1", L"2", L"3"};
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::ArrowRight);
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::ArrowRight);
EXPECT_EQ(selected, 2);
toggle->OnEvent(Event::ArrowRight);
EXPECT_EQ(selected, 2);
toggle->OnEvent(Event::ArrowLeft);
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::ArrowLeft);
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::ArrowLeft);
EXPECT_EQ(selected, 0);
}
TEST(ToggleTest, Tab) {
Toggle toggle;
toggle.entries = {L"1", L"2", L"3"};
std::vector<std::wstring> entries = {L"1", L"2", L"3"};
int selected = 0;
auto toggle = Toggle(&entries, &selected);
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::Tab);
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::Tab);
EXPECT_EQ(toggle.selected, 2);
toggle.OnEvent(Event::Tab);
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::Tab);
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::Tab);
EXPECT_EQ(toggle.selected, 2);
toggle.OnEvent(Event::TabReverse);
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::TabReverse);
EXPECT_EQ(toggle.selected, 0);
toggle.OnEvent(Event::TabReverse);
EXPECT_EQ(toggle.selected, 2);
toggle.OnEvent(Event::TabReverse);
EXPECT_EQ(toggle.selected, 1);
toggle.OnEvent(Event::TabReverse);
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::Tab);
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::Tab);
EXPECT_EQ(selected, 2);
toggle->OnEvent(Event::Tab);
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::Tab);
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::Tab);
EXPECT_EQ(selected, 2);
toggle->OnEvent(Event::TabReverse);
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::TabReverse);
EXPECT_EQ(selected, 0);
toggle->OnEvent(Event::TabReverse);
EXPECT_EQ(selected, 2);
toggle->OnEvent(Event::TabReverse);
EXPECT_EQ(selected, 1);
toggle->OnEvent(Event::TabReverse);
}
TEST(ToggleTest, OnChange) {
Toggle toggle;
toggle.entries = {L"1", L"2", L"3"};
std::vector<std::wstring> entries = {L"1", L"2", L"3"};
int selected = 0;
auto toggle = Toggle(&entries, &selected);
int counter = 0;
toggle.on_change = [&] { counter++; };
ToggleBase::From(toggle)->on_change = [&] { counter++; };
EXPECT_FALSE(toggle.OnEvent(Event::ArrowLeft)); // Reached far left.
EXPECT_FALSE(toggle->OnEvent(Event::ArrowLeft)); // Reached far left.
EXPECT_EQ(counter, 0);
EXPECT_TRUE(toggle.OnEvent(Event::ArrowRight)); // [0] -> [1]
EXPECT_TRUE(toggle->OnEvent(Event::ArrowRight)); // [0] -> [1]
EXPECT_EQ(counter, 1);
EXPECT_TRUE(toggle.OnEvent(Event::ArrowRight)); // [1] -> [2]
EXPECT_TRUE(toggle->OnEvent(Event::ArrowRight)); // [1] -> [2]
EXPECT_EQ(counter, 2);
EXPECT_FALSE(toggle.OnEvent(Event::ArrowRight)); // Reached far right.
EXPECT_FALSE(toggle->OnEvent(Event::ArrowRight)); // Reached far right.
EXPECT_EQ(counter, 2);
EXPECT_TRUE(toggle.OnEvent(Event::ArrowLeft)); // [2] -> [1]
EXPECT_TRUE(toggle->OnEvent(Event::ArrowLeft)); // [2] -> [1]
EXPECT_EQ(counter, 3);
EXPECT_TRUE(toggle.OnEvent(Event::ArrowLeft)); // [1] -> [0]
EXPECT_TRUE(toggle->OnEvent(Event::ArrowLeft)); // [1] -> [0]
EXPECT_EQ(counter, 4);
EXPECT_FALSE(toggle.OnEvent(Event::ArrowLeft)); // Reached far left.
EXPECT_FALSE(toggle->OnEvent(Event::ArrowLeft)); // Reached far left.
EXPECT_EQ(counter, 4);
}
TEST(ToggleTest, OnEnter) {
Toggle toggle;
toggle.entries = {L"1", L"2", L"3"};
std::vector<std::wstring> entries = {L"1", L"2", L"3"};
int selected = 0;
auto toggle = Toggle(&entries, &selected);
int counter = 0;
toggle.on_enter = [&] { counter++; };
ToggleBase::From(toggle)->on_enter = [&] { counter++; };
EXPECT_FALSE(toggle.OnEvent(Event::ArrowLeft)); // Reached far left.
EXPECT_TRUE(toggle.OnEvent(Event::Return));
EXPECT_FALSE(toggle->OnEvent(Event::ArrowLeft)); // Reached far left.
EXPECT_TRUE(toggle->OnEvent(Event::Return));
EXPECT_EQ(counter, 1);
EXPECT_TRUE(toggle.OnEvent(Event::ArrowRight)); // [0] -> [1]
EXPECT_TRUE(toggle.OnEvent(Event::Return));
EXPECT_TRUE(toggle->OnEvent(Event::ArrowRight)); // [0] -> [1]
EXPECT_TRUE(toggle->OnEvent(Event::Return));
EXPECT_EQ(counter, 2);
EXPECT_TRUE(toggle.OnEvent(Event::ArrowRight)); // [1] -> [2]
EXPECT_TRUE(toggle.OnEvent(Event::Return));
EXPECT_TRUE(toggle->OnEvent(Event::ArrowRight)); // [1] -> [2]
EXPECT_TRUE(toggle->OnEvent(Event::Return));
EXPECT_EQ(counter, 3);
EXPECT_FALSE(toggle.OnEvent(Event::ArrowRight)); // Reached far right.
EXPECT_TRUE(toggle.OnEvent(Event::Return));
EXPECT_FALSE(toggle->OnEvent(Event::ArrowRight)); // Reached far right.
EXPECT_TRUE(toggle->OnEvent(Event::Return));
EXPECT_EQ(counter, 4);
EXPECT_TRUE(toggle.OnEvent(Event::ArrowLeft)); // [2] -> [1]
EXPECT_TRUE(toggle.OnEvent(Event::Return));
EXPECT_TRUE(toggle->OnEvent(Event::ArrowLeft)); // [2] -> [1]
EXPECT_TRUE(toggle->OnEvent(Event::Return));
EXPECT_EQ(counter, 5);
EXPECT_TRUE(toggle.OnEvent(Event::ArrowLeft)); // [1] -> [0]
EXPECT_TRUE(toggle.OnEvent(Event::Return));
EXPECT_TRUE(toggle->OnEvent(Event::ArrowLeft)); // [1] -> [0]
EXPECT_TRUE(toggle->OnEvent(Event::Return));
EXPECT_EQ(counter, 6);
EXPECT_FALSE(toggle.OnEvent(Event::ArrowLeft)); // Reached far left.
EXPECT_TRUE(toggle.OnEvent(Event::Return));
EXPECT_FALSE(toggle->OnEvent(Event::ArrowLeft)); // Reached far left.
EXPECT_TRUE(toggle->OnEvent(Event::Return));
EXPECT_EQ(counter, 7);
}

13
src/ftxui/dom/blink.cpp
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@ -1,10 +1,11 @@
#include <memory>
#include <memory> // for make_shared
#include <utility> // for move
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node.hpp"
#include "ftxui/dom/node_decorator.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, Elements, blink
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/node_decorator.hpp" // for NodeDecorator
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/screen.hpp" // for Pixel, Screen
namespace ftxui {

13
src/ftxui/dom/bold.cpp
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@ -1,10 +1,11 @@
#include <memory>
#include <memory> // for make_shared
#include <utility> // for move
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node.hpp"
#include "ftxui/dom/node_decorator.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, Elements, bold
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/node_decorator.hpp" // for NodeDecorator
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/screen.hpp" // for Pixel, Screen
namespace ftxui {

2
src/ftxui/dom/border.cpp
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@ -2,7 +2,7 @@
#include <iterator> // for begin, end
#include <memory> // for make_shared, __shared_ptr_access
#include <utility> // for move
#include <vector> // for vector
#include <vector> // for vector, __alloc_traits<>::value_type
#include "ftxui/dom/elements.hpp" // for unpack, Element, Decorator, Elements, border, borderWith, window
#include "ftxui/dom/node.hpp" // for Node

13
src/ftxui/dom/clear_under.cpp
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@ -1,10 +1,11 @@
#include <memory>
#include <memory> // for make_shared
#include <utility> // for move
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node.hpp"
#include "ftxui/dom/node_decorator.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, Elements, clear_under
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/node_decorator.hpp" // for NodeDecorator
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/screen.hpp" // for Pixel, Screen
namespace ftxui {

13
src/ftxui/dom/color.cpp
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@ -1,10 +1,11 @@
#include <memory>
#include <memory> // for make_shared
#include <utility> // for move
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node_decorator.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/color.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, Decorator, Elements, bgcolor, color
#include "ftxui/dom/node_decorator.hpp" // for NodeDecorator
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/color.hpp" // for Color
#include "ftxui/screen/screen.hpp" // for Pixel, Screen
namespace ftxui {

4
src/ftxui/dom/composite_decorator.cpp
View File

@ -1,5 +1,7 @@
#include "ftxui/dom/elements.hpp"
#include <utility> // for move
#include "ftxui/dom/elements.hpp" // for Element, filler, operator|, hbox, flex_grow, vbox, xflex_grow, yflex_grow, align_right, center, hcenter, vcenter
namespace ftxui {

13
src/ftxui/dom/dim.cpp
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@ -1,10 +1,11 @@
#include <memory>
#include <memory> // for make_shared
#include <utility> // for move
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node.hpp"
#include "ftxui/dom/node_decorator.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, Elements, dim
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/node_decorator.hpp" // for NodeDecorator
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/screen.hpp" // for Pixel, Screen
namespace ftxui {

13
src/ftxui/dom/flex.cpp
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@ -1,10 +1,11 @@
#include <memory>
#include <vector>
#include <memory> // for make_shared, __shared_ptr_access
#include <utility> // for move
#include <vector> // for vector, __alloc_traits<>::value_type
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node.hpp"
#include "ftxui/dom/requirement.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, filler, flex, flex_grow, flex_shrink, notflex, xflex, xflex_grow, xflex_shrink, yflex, yflex_grow, yflex_shrink
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/requirement.hpp" // for Requirement
#include "ftxui/screen/box.hpp" // for Box
namespace ftxui {

2
src/ftxui/dom/frame.cpp
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@ -1,7 +1,7 @@
#include <algorithm> // for max, min
#include <memory> // for make_shared, shared_ptr, __shared_ptr_access
#include <utility> // for move
#include <vector> // for vector
#include <vector> // for vector, __alloc_traits<>::value_type
#include "ftxui/dom/elements.hpp" // for Element, unpack, focus, frame, select, xframe, yframe
#include "ftxui/dom/node.hpp" // for Node

11
src/ftxui/dom/gauge.cpp
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@ -1,9 +1,10 @@
#include <memory>
#include <memory> // for make_shared
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/requirement.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, gauge
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/requirement.hpp" // for Requirement
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/screen.hpp" // for Screen
namespace ftxui {

13
src/ftxui/dom/inverted.cpp
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@ -1,10 +1,11 @@
#include <memory>
#include <utility>
#include <memory> // for make_shared
#include <utility> // for move
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node_decorator.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, Elements, inverted
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/node_decorator.hpp" // for NodeDecorator
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/screen.hpp" // for Pixel, Screen
namespace ftxui {

2
src/ftxui/dom/node_decorator.cpp
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@ -1,5 +1,5 @@
#include <memory> // for __shared_ptr_access
#include <vector> // for vector
#include <vector> // for __alloc_traits<>::value_type, vector
#include "ftxui/dom/node_decorator.hpp"
#include "ftxui/dom/requirement.hpp" // for Requirement

14
src/ftxui/dom/reflect.cpp
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@ -1,11 +1,11 @@
#include <memory>
#include <utility>
#include <vector>
#include <memory> // for make_shared, __shared_ptr_access
#include <utility> // for move
#include <vector> // for __alloc_traits<>::value_type, vector
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node.hpp"
#include "ftxui/dom/requirement.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, Decorator, reflect
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/requirement.hpp" // for Requirement
#include "ftxui/screen/box.hpp" // for Box
namespace ftxui {

11
src/ftxui/dom/separator.cpp
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@ -1,9 +1,10 @@
#include <memory>
#include <memory> // for make_shared
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, separator
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/requirement.hpp" // for Requirement
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/screen.hpp" // for Pixel, Screen
namespace ftxui {

2
src/ftxui/dom/size.cpp
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@ -2,7 +2,7 @@
#include <algorithm> // for min, max
#include <memory> // for make_shared, __shared_ptr_access
#include <utility> // for move
#include <vector> // for vector
#include <vector> // for __alloc_traits<>::value_type, vector
#include "ftxui/dom/elements.hpp" // for Constraint, Direction, EQUAL, GREATER_THAN, LESS_THAN, WIDTH, unpack, Decorator, Element, size
#include "ftxui/dom/node.hpp" // for Node

11
src/ftxui/dom/spinner.cpp
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@ -1,9 +1,10 @@
#include <stddef.h>
#include <memory>
#include <string>
#include <vector>
#include <stddef.h> // for size_t
#include <memory> // for allocator, allocator_traits<>::value_type
#include <string> // for basic_string, wstring
#include <utility> // for move
#include <vector> // for vector, __alloc_traits<>::value_type
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/elements.hpp" // for Element, gauge, text, vbox, spinner
namespace ftxui {

7
src/ftxui/dom/text_test.cpp
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@ -1,11 +1,12 @@
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult
#include <gtest/gtest-message.h> // for Message
#include <gtest/gtest-test-part.h> // for SuiteApiResolver, TestFactoryImpl, TestPartResult
#include <memory> // for allocator
#include "ftxui/dom/elements.hpp" // for text, Element, operator|, border
#include "ftxui/dom/node.hpp" // for Render
#include "ftxui/screen/box.hpp" // for ftxui
#include "ftxui/screen/screen.hpp" // for Screen
#include "gtest/gtest_pred_impl.h" // for Test, SuiteApiResolver, EXPECT_EQ
#include "gtest/gtest_pred_impl.h" // for Test, EXPECT_EQ, TEST
using namespace ftxui;

13
src/ftxui/dom/underlined.cpp
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@ -1,10 +1,11 @@
#include <memory>
#include <utility>
#include <memory> // for make_shared
#include <utility> // for move
#include "ftxui/dom/elements.hpp"
#include "ftxui/dom/node_decorator.hpp"
#include "ftxui/screen/box.hpp"
#include "ftxui/screen/screen.hpp"
#include "ftxui/dom/elements.hpp" // for Element, unpack, Elements, underlined
#include "ftxui/dom/node.hpp" // for Node
#include "ftxui/dom/node_decorator.hpp" // for NodeDecorator
#include "ftxui/screen/box.hpp" // for Box
#include "ftxui/screen/screen.hpp" // for Pixel, Screen
namespace ftxui {

1
src/ftxui/dom/util.cpp
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@ -1,5 +1,6 @@
#include <functional> // for function
#include <utility> // for move
#include <vector> // for vector
#include "ftxui/dom/elements.hpp" // for Decorator, Element, Elements, operator|, nothing

24
src/ftxui/screen/string.cpp
View File

@ -25,6 +25,30 @@ std::wstring to_wstring(const std::string& s) {
#pragma warning(pop)
#endif
StringRef::StringRef(std::wstring& ref) : borrowed_(&ref) {}
StringRef::StringRef(std::wstring* ref) : borrowed_(ref) {}
StringRef::StringRef(const wchar_t* ref) : owned_(ref) {}
StringRef::StringRef(const char* ref) : owned_(to_wstring(std::string(ref))) {}
std::wstring& StringRef::operator*() {
return borrowed_ ? *borrowed_ : owned_;
}
std::wstring* StringRef::operator->() {
return borrowed_ ? borrowed_ : &owned_;
}
ConstStringRef::ConstStringRef(const std::wstring& ref) : borrowed_(&ref) {}
ConstStringRef::ConstStringRef(const std::wstring* ref) : borrowed_(ref) {}
ConstStringRef::ConstStringRef(const wchar_t* ref) : owned_(ref) {}
ConstStringRef::ConstStringRef(const char* ref)
: owned_(to_wstring(std::string(ref))) {}
const std::wstring& ConstStringRef::operator*() {
return borrowed_ ? *borrowed_ : owned_;
}
const std::wstring* ConstStringRef::operator->() {
return borrowed_ ? borrowed_ : &owned_;
}
} // namespace ftxui
// Copyright 2020 Arthur Sonzogni. All rights reserved.

6
tools/iwyu.sh
View File

@ -6,6 +6,8 @@ mkdir -p iwyu
cd iwyu
rm * -rf
echo $CMAKE_CXX_INCLUDE_WHAT_YOU_USE
cmake .. -DFTXUI_BUILD_TESTS=ON -DCMAKE_CXX_INCLUDE_WHAT_YOU_USE="iwyu;-Xiwyu;--cxx17ns;-Xiwyu;--mapping_file=${mapping_dir}/iwyu.imp;-Xiwyu;--verbose=3"
cmake .. -DFTXUI_BUILD_TESTS=ON -DCMAKE_CXX_INCLUDE_WHAT_YOU_USE="include-what-you-use;-Xiwyu;--cxx17ns;-Xiwyu;--mapping_file=${mapping_dir}/iwyu.imp;-Xiwyu;--verbose=3"
make -j 2>out
fix_include --comments < out
fix_includes.py --comments < out
../tools/format.sh

2
tools/license_headers.cpp
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@ -1,4 +1,4 @@
// Copyright 2020 Arthur Sonzogni. All rights reserved.
// Copyright 2021 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.