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ed51c4b342
These are simple opinionated methods for creating a terminal that is
useful to use in most apps. The new init method creates a crossterm
backend writing to stdout, enables raw mode, enters the alternate
screen, and sets a panic handler that restores the terminal on panic.
A minimal hello world now looks a bit like:
```rust
use ratatui::{
crossterm::event::{self, Event},
text::Text,
Frame,
};
fn main() {
let mut terminal = ratatui::init();
loop {
terminal
.draw(|frame: &mut Frame| frame.render_widget(Text::raw("Hello World!"), frame.area()))
.expect("Failed to draw");
if matches!(event::read().expect("failed to read event"), Event::Key(_)) {
break;
}
}
ratatui::restore();
}
```
A type alias `DefaultTerminal` is added to represent this terminal
type and to simplify any cases where applications need to pass this
terminal around. It is equivalent to:
`Terminal<CrosstermBackend<Stdout>>`
We also added `ratatui::try_init()` and `try_restore()`, for situations
where you might want to handle initialization errors yourself instead
of letting the panic handler fire and cleanup. Simple Apps should
prefer the `init` and `restore` functions over these functions.
Corresponding functions to allow passing a `TerminalOptions` with
a `Viewport` (e.g. inline, fixed) are also available
(`init_with_options`,
and `try_init_with_options`).
The existing code to create a backend and terminal will remain and
is not deprecated by this approach. This just provides a simple one
line initialization using the common options.
---------
Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>
55 lines
1.8 KiB
Rust
55 lines
1.8 KiB
Rust
//! # [Ratatui] Demo2 example
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//!
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//! The latest version of this example is available in the [examples] folder in the repository.
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//!
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//! Please note that the examples are designed to be run against the `main` branch of the Github
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//! repository. This means that you may not be able to compile with the latest release version on
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//! crates.io, or the one that you have installed locally.
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//!
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//! See the [examples readme] for more information on finding examples that match the version of the
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//! library you are using.
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//!
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//! [Ratatui]: https://github.com/ratatui/ratatui
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//! [examples]: https://github.com/ratatui/ratatui/blob/main/examples
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//! [examples readme]: https://github.com/ratatui/ratatui/blob/main/examples/README.md
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#![allow(
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clippy::missing_errors_doc,
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clippy::module_name_repetitions,
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clippy::must_use_candidate
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)]
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mod app;
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mod colors;
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mod destroy;
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mod tabs;
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mod theme;
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use std::io::stdout;
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use app::App;
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use color_eyre::Result;
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use crossterm::{
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execute,
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terminal::{EnterAlternateScreen, LeaveAlternateScreen},
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};
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use ratatui::{layout::Rect, TerminalOptions, Viewport};
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pub use self::{
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colors::{color_from_oklab, RgbSwatch},
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theme::THEME,
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};
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fn main() -> Result<()> {
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color_eyre::install()?;
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// this size is to match the size of the terminal when running the demo
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// using vhs in a 1280x640 sized window (github social preview size)
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let viewport = Viewport::Fixed(Rect::new(0, 0, 81, 18));
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let terminal = ratatui::init_with_options(TerminalOptions { viewport });
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execute!(stdout(), EnterAlternateScreen).expect("failed to enter alternate screen");
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let app_result = App::default().run(terminal);
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execute!(stdout(), LeaveAlternateScreen).expect("failed to leave alternate screen");
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ratatui::restore();
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app_result
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}
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