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mainpage.md - Document 'refreshing / invalidating the screen to cause… (#147)
Add a section explaining the use for ScreenInteractive::PostEvent. Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
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doc/mainpage.md
109
doc/mainpage.md
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@ -96,40 +96,26 @@ make
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./main
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~~~
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## Using NXXM
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**.nxxm/deps**
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~~~json
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{
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"ArthurSonzogni/FTXUI": {}
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}
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~~~
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Build:
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~~~
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nxxm . -t clang-cxx17
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~~~
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# List of modules.
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The project is split into 3 modules:
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1. **ftxui/screen** defines a ftxui::Screen, this is a grid of ftxui::Pixel.
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1. **ftxui/screen** defines a `ftxui::Screen`, this is a grid of `ftxui::Pixel`.
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2. **ftxui/dom** is the main module. It defines a hierarchical set of ftxui::Element.
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An element draws something on the ftxui::Screen. It is responsive to the size of
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its container.
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2. **ftxui/dom** is the main module. It defines a hierarchical set of
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`ftxui::Element`. An element draws something on the `ftxui::Screen`. It is
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responsive to the size of its container.
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3. **ftxui/component** The part is only needed if you need to respond to the User
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input. It defines a set of ftxui::Component. The use can navigates using the
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arrow keys and interact with widgets like checkbox/inputbox/... You can make you
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own components.
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3. **ftxui/component** The part is only needed if you need to respond to the
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User input. It defines a set of `ftxui::Component`. The use can navigates
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using the arrow keys and interact with widgets like checkbox/inputbox/... You
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can make you own components.
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# screen
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It defines a ftxui::Screen. This is a grid of ftxui::Pixel. A Pixel represent a
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unicode character and its associated style (bold, colors, etc...).
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The screen can be printed as a string using ftxui::Screen::ToString().
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It defines a `ftxui::Screen`. This is a grid of `ftxui::Pixel`. A Pixel
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represent a Unicode character and its associated style (bold, colors, etc...).
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The screen can be printed as a string using `ftxui::Screen::ToString()`.
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~~~cpp
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#include <ftxui/screen/screen.hpp>
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@ -151,8 +137,8 @@ The screen can be printed as a string using ftxui::Screen::ToString().
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# dom
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This module defines a hierachical set of Element. An element manages layout and can be responsive to the terminal dimensions.
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This module defines a hierarchical set of Element. An element manages layout and
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can be responsive to the terminal dimensions.
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**Example:**
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```cpp
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@ -198,7 +184,7 @@ border(text(L"The element"))
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## window
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A ftxui::window is a ftxui::border, but with some text on top of the border.
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A `ftxui::window` is a `ftxui::border`, but with some text on top of the border.
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Add a border around an element
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~~~cpp
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window(L"The window", text(L"The element"))
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@ -290,7 +276,7 @@ On most terminal the following colors are supported:
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Example:
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```cpp
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text(L"Blue foreground") | color(Color::Blue);
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text(L"Blue backgrond") | bgcolor(Color::Blue);
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text(L"Blue background") | bgcolor(Color::Blue);
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text(L"Black on white") | color(Color::Black) | bgcolor(Color::White);
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```
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@ -355,8 +341,8 @@ They are used to compose all the elements together. Each
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children are put side by side. If the container is flexible, the extra space
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available will be shared among the remaining flexible children.
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flex(element) can be used to make a non-flexible element flexible. filler() is a
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flexible empty element. You can use it align children on one side of the
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`flex(element)` can be used to make a non-flexible element flexible. `filler()`
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is a flexible empty element. You can use it align children on one side of the
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container.
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An horizontal flow layout is implemented by:
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@ -395,13 +381,13 @@ An horizontal flow layout is implemented by:
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The `ftxui/component` directory defines the logic to get produce
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interactive component responding to user's events (keyboard, mouse, etc...)
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A ftxui::ScreenInteractive defines a main loop to render a component.
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A `ftxui::ScreenInteractive` defines a main loop to render a component.
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A ftxui::Component is a shared pointer to a ftxui::ComponentBase. The later
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A `ftxui::Component` is a shared pointer to a `ftxui::ComponentBase`. The later
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defines
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- ftxui::ComponentBase::Render(): How to render the interface.
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- ftxui::ComponentBase::OnEvent(): How to react to events.
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- ftxui::ComponentBase::Add(): Give a parent/child relation ship in between
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- `ftxui::ComponentBase::Render()`: How to render the interface.
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- `ftxui::ComponentBase::OnEvent()`: How to react to events.
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- `ftxui::ComponentBase::Add()`: Give a parent/child relation ship in between
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two component. This defines a tree a components, which help properly define
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how keyboard navigation works.
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@ -415,7 +401,7 @@ its keyboard. They handle keyboard navigation, including component focus.
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## Input
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Produced by: ftxui::Input() from "ftxui/component/component.hpp"
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Produced by: `ftxui::Input()` from "ftxui/component/component.hpp"
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@htmlonly
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<script id="asciicast-223719" src="https://asciinema.org/a/223719.js" async></script>
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@ -423,7 +409,7 @@ Produced by: ftxui::Input() from "ftxui/component/component.hpp"
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## Menu
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Produced by: ftxui::Menu() from "ftxui/component/component.hpp"
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Produced by: `ftxui::Menu()` from "ftxui/component/component.hpp"
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@htmlonly
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<script id="asciicast-223720" src="https://asciinema.org/a/223720.js" async></script>
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@ -431,7 +417,7 @@ Produced by: ftxui::Menu() from "ftxui/component/component.hpp"
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## Toggle.
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Produced by: ftxui::Toggle() from "ftxui/component/component.hpp"
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Produced by: `ftxui::Toggle()` from "ftxui/component/component.hpp"
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@htmlonly
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<script id="asciicast-223722" src="https://asciinema.org/a/223722.js" async></script>
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@ -439,7 +425,7 @@ Produced by: ftxui::Toggle() from "ftxui/component/component.hpp"
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## CheckBox
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Produced by: ftxui::Checkbox() from "ftxui/component/component.hpp"
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Produced by: `ftxui::Checkbox()` from "ftxui/component/component.hpp"
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@htmlonly
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<script id="asciicast-223724" src="https://asciinema.org/a/223724.js" async></script>
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@ -447,7 +433,7 @@ Produced by: ftxui::Checkbox() from "ftxui/component/component.hpp"
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## RadioBox
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Produced by: ftxui::Radiobox() from "ftxui/component/component.hpp"
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Produced by: `ftxui::Radiobox()` from "ftxui/component/component.hpp"
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@htmlonly
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<script id="asciicast-223725" src="https://asciinema.org/a/223725.js" async></script>
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@ -455,48 +441,63 @@ Produced by: ftxui::Radiobox() from "ftxui/component/component.hpp"
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## Renderer
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Produced by: ftxui::Renderer() from \ref "ftxui/component/component.hpp". This
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Produced by: `ftxui::Renderer()` from \ref "ftxui/component/component.hpp". This
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component decorate another one by using a different function to render an
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interface.
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## CatchEvent
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Produced by: ftxui::CatchEvent() from \ref "ftxui/component/component.hpp". This
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component decorate another one and catch the events before the underlying
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Produced by: `ftxui::CatchEvent()` from \ref "ftxui/component/component.hpp".
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This component decorate another one and catch the events before the underlying
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component.
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## Container::Horizontal
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Produced by: ftxui::Container::Horizontal() from
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Produced by: `ftxui::Container::Horizontal()` from
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"ftxui/component/component.hpp". It displays a list of components horizontally
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and handle keyboard/mouse navigation.
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## Container::Vertial
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Produced by: ftxui::Container::Vertical() from
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Produced by: `ftxui::Container::Vertical()` from
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"ftxui/component/component.hpp". It displays a list of components vertically
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and handles keyboard/mouse navigation.
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## Container::Tab
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Produced by: ftxui::Container::Tab() from
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Produced by: `ftxui::Container::Tab()` from
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"ftxui/component/component.hpp". It take a list of component and display only
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one of them. This is useful for implementing a tab bar.
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## ResizableSplit::{Left, Right, Top, Bottom}
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Produced by:
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- ftxui::ResizableSplitLeft()
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- ftxui::ResizableSplitRight()
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- ftxui::ResizableSplitTop()
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- ftxui::ResizableSplitBottom()
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- `ftxui::ResizableSplitLeft()`
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- `ftxui::ResizableSplitRight()`
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- `ftxui::ResizableSplitTop()`
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- `ftxui::ResizableSplitBottom()`
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from "ftxui/component/component.hpp"
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It defines an horizontal or vertical separation in between two chilren
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component. The position of the split is variable and controlable using the
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It defines an horizontal or vertical separation in between two children
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component. The position of the split is variable and controllable using the
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mouse.
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@htmlonly
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<script id="asciicast-tprMH2EdkUoMb7D2YxgMGgpzx" src="https://asciinema.org/a/tprMH2EdkUoMb7D2YxgMGgpzx.js" async></script>
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@endhtmlonly
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## Force a frame redraw.
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Whenever a new group of events have been processed: keyboard, mouse, window
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resize, etc..., the `ftxui::ScreenInteractive::Loop()` is responsible for
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drawing a new frame.
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You might want to react to arbitrary events that are unknown to FTXUI. This can
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be achieve by posting events via `PostEvent`, via a thread. You can post the
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event`Event::Custom`.
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```cpp
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screen->PostEvent(ftxui::Event::Custom);
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```
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`ftxui::ScreenInteractive::PostEvent` is thread safe.
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