Create an example UI and event handler

This commit is contained in:
Savanni D'Gerinel 2024-05-05 22:50:38 -04:00
parent 20b02fbd90
commit fd444a620d
4 changed files with 524 additions and 89 deletions

488
Cargo.lock generated

File diff suppressed because it is too large Load Diff

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@ -8,6 +8,7 @@ members = [
"coordinates", "coordinates",
"cyberpunk-splash", "cyberpunk-splash",
"dashboard", "dashboard",
"editor-challenge",
"emseries", "emseries",
"file-service", "file-service",
"fitnesstrax/core", "fitnesstrax/core",

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@ -0,0 +1,14 @@
[package]
name = "editor-challenge"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
anyhow = { version = "1" }
crossterm = { version = "0.19", features = [ "serde" ] }
serde = { version = "1", features = [ "derive" ] }
serde_yml = { version = "*" }
thiserror = { version = "1" }
tui = { version = "0.19", default-features = false, features = [ "crossterm", "serde" ] }

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@ -0,0 +1,110 @@
use crossterm::{event::{self, KeyCode, KeyEvent}, terminal::{disable_raw_mode, enable_raw_mode}};
use std::{io::{self, Read}, sync::mpsc, thread, time::{Duration, Instant}};
use tui::{
backend::CrosstermBackend, layout::{Alignment, Constraint, Direction, Layout}, style::{Color, Style}, widgets::{Block, BorderType, Borders, Paragraph}, Terminal
};
const TITLE: &str = "Editor Challenge";
const COPYRIGHT: &str = "Editor Challenge, (c) Savanni D'Gerinel - all rights reserved";
const TICK_RATE_MS: u64 = 200;
fn render<T>(terminal: &mut Terminal<T>) -> Result<(), anyhow::Error>
where
T: tui::backend::Backend,
{
terminal.draw(|rect| {
let size = rect.size();
let chunks = Layout::default()
.direction(Direction::Vertical)
.margin(2)
.constraints(
[
Constraint::Length(3),
Constraint::Min(2),
Constraint::Length(3),
]
.as_ref(),
)
.split(size);
let title = Paragraph::new(TITLE)
.style(Style::default().fg(Color::LightCyan))
.alignment(Alignment::Center)
.block(
Block::default()
.borders(Borders::ALL)
.style(Style::default().fg(Color::White))
.title("Copyright")
.border_type(BorderType::Plain),
);
rect.render_widget(title, chunks[0]);
let cp = Paragraph::new(COPYRIGHT)
.style(Style::default().fg(Color::LightCyan))
.alignment(Alignment::Center)
.block(
Block::default()
.borders(Borders::ALL)
.style(Style::default().fg(Color::White))
.title("Copyright")
.border_type(BorderType::Plain),
);
rect.render_widget(cp, chunks[2]);
})?;
Ok(())
}
enum Event<I> {
Input(I),
Tick,
}
fn handle_input(tx: mpsc::Sender<Event<KeyEvent>>, tick_rate: Duration) {
let mut last_tick = Instant::now();
loop {
let timeout = tick_rate.checked_sub(last_tick.elapsed())
.unwrap_or_else(|| Duration::from_secs(0));
if event::poll(timeout).expect("poll works") {
if let event::Event::Key(key) = event::read().expect("can read events") {
tx.send(Event::Input(key)).expect("can send events");
}
}
if last_tick.elapsed() >= tick_rate {
if let Ok(_) = tx.send(Event::Tick) {
last_tick = Instant::now();
}
}
}
}
fn main() -> Result<(), anyhow::Error> {
let (tx, rx) = mpsc::channel();
let tick_rate = Duration::from_millis(TICK_RATE_MS);
thread::spawn(move || {
handle_input(tx, tick_rate);
});
enable_raw_mode()?;
let stdout = io::stdout();
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend)?;
let _ = terminal.clear()?;
loop {
render(&mut terminal)?;
let event = rx.recv()?;
match event {
Event::Input(KeyEvent{ code, .. }) if code == KeyCode::Char('q') => {
disable_raw_mode()?;
return Ok(());
}
_ => {},
}
}
}