mirror of
https://codeberg.org/unspeaker/tek.git
synced 2025-12-06 19:56:42 +01:00
654 lines
20 KiB
Rust
654 lines
20 KiB
Rust
use crate::*;
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pub(crate) use ratatui::buffer::Cell;
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pub(crate) use crossterm::{ExecutableCommand};
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pub use crossterm::event::{Event, KeyEvent, KeyCode, KeyModifiers};
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pub use ratatui::prelude::{Rect, Style, Color, Buffer};
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pub use ratatui::style::{Stylize, Modifier};
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use ratatui::backend::{Backend, CrosstermBackend};
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use std::io::Stdout;
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use crossterm::terminal::{
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EnterAlternateScreen, LeaveAlternateScreen,
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enable_raw_mode, disable_raw_mode
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};
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pub struct Tui {
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exited: Arc<AtomicBool>,
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buffer: Buffer,
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backend: CrosstermBackend<Stdout>,
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area: [u16;4], // FIXME auto resize
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}
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impl Engine for Tui {
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type Unit = u16;
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type Size = [Self::Unit;2];
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type Area = [Self::Unit;4];
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type Input = TuiInput;
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type Handled = bool;
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type Output = TuiOutput;
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fn exited (&self) -> bool {
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self.exited.fetch_and(true, Ordering::Relaxed)
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}
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fn setup (&mut self) -> Usually<()> {
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let better_panic_handler = Settings::auto().verbosity(Verbosity::Full).create_panic_handler();
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std::panic::set_hook(Box::new(move |info: &std::panic::PanicInfo|{
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stdout().execute(LeaveAlternateScreen).unwrap();
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CrosstermBackend::new(stdout()).show_cursor().unwrap();
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disable_raw_mode().unwrap();
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better_panic_handler(info);
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}));
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stdout().execute(EnterAlternateScreen)?;
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self.backend.hide_cursor()?;
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enable_raw_mode().map_err(Into::into)
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}
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fn teardown (&mut self) -> Usually<()> {
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stdout().execute(LeaveAlternateScreen)?;
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self.backend.show_cursor()?;
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disable_raw_mode().map_err(Into::into)
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}
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}
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impl Tui {
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/// Run the main loop.
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pub fn run <R: Component<Tui> + Sized + 'static> (
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state: Arc<RwLock<R>>
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) -> Usually<Arc<RwLock<R>>> {
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let backend = CrosstermBackend::new(stdout());
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let area = backend.size()?;
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let engine = Self {
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exited: Arc::new(AtomicBool::new(false)),
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buffer: Buffer::empty(area),
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area: area.xywh(),
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backend,
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};
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let engine = Arc::new(RwLock::new(engine));
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let _input_thread = Self::spawn_input_thread(&engine, &state, Duration::from_millis(100));
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engine.write().unwrap().setup()?;
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let render_thread = Self::spawn_render_thread(&engine, &state, Duration::from_millis(10));
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render_thread.join().expect("main thread failed");
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engine.write().unwrap().teardown()?;
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Ok(state)
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}
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fn spawn_input_thread <R: Component<Tui> + Sized + 'static> (
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engine: &Arc<RwLock<Self>>, state: &Arc<RwLock<R>>, poll: Duration
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) -> JoinHandle<()> {
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let exited = engine.read().unwrap().exited.clone();
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let state = state.clone();
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spawn(move || loop {
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if exited.fetch_and(true, Ordering::Relaxed) {
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break
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}
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if ::crossterm::event::poll(poll).is_ok() {
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let event = TuiEvent::Input(::crossterm::event::read().unwrap());
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match event {
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key!(Ctrl-KeyCode::Char('c')) => {
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exited.store(true, Ordering::Relaxed);
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},
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_ => {
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let exited = exited.clone();
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if let Err(e) = state.write().unwrap().handle(&TuiInput { event, exited }) {
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panic!("{e}")
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}
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}
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}
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}
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})
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}
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fn spawn_render_thread <R: Component<Tui> + Sized + 'static> (
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engine: &Arc<RwLock<Self>>, state: &Arc<RwLock<R>>, sleep: Duration
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) -> JoinHandle<()> {
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let exited = engine.read().unwrap().exited.clone();
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let engine = engine.clone();
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let state = state.clone();
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let mut buffer = Buffer::empty(
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engine.read().unwrap().backend.size().expect("get size failed")
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);
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spawn(move || loop {
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if exited.fetch_and(true, Ordering::Relaxed) {
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break
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}
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let size = engine.read().unwrap().backend.size().expect("get size failed");
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if let Ok(state) = state.try_read() {
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if buffer.area != size {
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buffer.resize(size);
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}
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let mut output = TuiOutput { buffer, area: size.xywh() };
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state.render(&mut output).expect("render failed");
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buffer = engine.write().unwrap().flip(output.buffer, size);
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}
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std::thread::sleep(sleep);
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})
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}
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fn flip (&mut self, mut buffer: Buffer, size: ratatui::prelude::Rect) -> Buffer {
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if self.buffer.area != size {
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self.buffer.resize(size);
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}
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let updates = self.buffer.diff(&buffer);
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self.backend.draw(updates.into_iter()).expect("failed to render");
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self.backend.flush().expect("failed to flush output buffer");
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std::mem::swap(&mut self.buffer, &mut buffer);
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buffer.reset();
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buffer
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}
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}
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pub struct TuiInput {
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event: TuiEvent,
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exited: Arc<AtomicBool>,
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}
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impl Input<Tui> for TuiInput {
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type Event = TuiEvent;
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fn event (&self) -> &TuiEvent {
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&self.event
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}
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fn is_done (&self) -> bool {
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self.exited.fetch_and(true, Ordering::Relaxed)
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}
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fn done (&self) {
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self.exited.store(true, Ordering::Relaxed);
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}
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}
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pub struct TuiOutput {
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pub buffer: Buffer,
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pub area: [u16;4],
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}
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impl Output<Tui> for TuiOutput {
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#[inline] fn area (&self) -> [u16;4] {
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self.area
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}
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#[inline] fn area_mut (&mut self) -> &mut [u16;4] {
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&mut self.area
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}
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#[inline] fn render_in (&mut self,
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area: [u16;4],
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widget: &dyn Widget<Engine = Tui>
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) -> Usually<()> {
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let last = self.area();
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*self.area_mut() = area;
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widget.render(self)?;
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*self.area_mut() = last;
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Ok(())
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}
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}
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impl TuiOutput {
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pub fn buffer_update (&mut self,
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area: [u16;4],
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callback: &impl Fn(&mut Cell, u16, u16)
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) {
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buffer_update(&mut self.buffer, area, callback);
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}
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pub fn fill_bg (&mut self, area: [u16;4], color: Color) {
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self.buffer_update(area, &|cell,_,_|{cell.set_bg(color);})
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}
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pub fn fill_fg (&mut self, area: [u16;4], color: Color) {
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self.buffer_update(area, &|cell,_,_|{cell.set_fg(color);})
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}
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pub fn fill_ul (&mut self, area: [u16;4], color: Color) {
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self.buffer_update(area, &|cell,_,_|{
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cell.modifier = ratatui::prelude::Modifier::UNDERLINED;
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cell.underline_color = color;
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})
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}
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pub fn fill_char (&mut self, area: [u16;4], c: char) {
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self.buffer_update(area, &|cell,_,_|{cell.set_char(c);})
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}
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pub fn make_dim (&mut self) {
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for cell in self.buffer.content.iter_mut() {
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cell.bg = ratatui::style::Color::Rgb(30,30,30);
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cell.fg = ratatui::style::Color::Rgb(100,100,100);
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cell.modifier = ratatui::style::Modifier::DIM;
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}
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}
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pub fn blit (
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&mut self, text: &impl AsRef<str>, x: u16, y: u16, style: Option<Style>
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) {
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let text = text.as_ref();
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let buf = &mut self.buffer;
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if x < buf.area.width && y < buf.area.height {
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buf.set_string(x, y, text, style.unwrap_or(Style::default()));
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}
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}
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#[inline]
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pub fn with_rect (&mut self, area: [u16;4]) -> &mut Self {
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self.area = area;
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self
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}
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}
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#[derive(Debug, Clone)]
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pub enum TuiEvent {
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/// Terminal input
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Input(::crossterm::event::Event),
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/// Update values but not the whole form.
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Update,
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/// Update the whole form.
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Redraw,
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/// Device gains focus
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Focus,
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/// Device loses focus
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Blur,
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// /// JACK notification
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// Jack(JackEvent)
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}
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impl Area<u16> for Rect {
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fn x (&self) -> u16 { self.x }
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fn y (&self) -> u16 { self.y }
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fn w (&self) -> u16 { self.width }
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fn h (&self) -> u16 { self.height }
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}
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pub fn half_block (lower: bool, upper: bool) -> Option<char> {
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match (lower, upper) {
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(true, true) => Some('█'),
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(true, false) => Some('▄'),
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(false, true) => Some('▀'),
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_ => None
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}
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}
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#[derive(Default)]
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pub struct BigBuffer {
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pub width: usize,
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pub height: usize,
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pub content: Vec<Cell>
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}
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impl BigBuffer {
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pub fn new (width: usize, height: usize) -> Self {
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Self { width, height, content: vec![Cell::default(); width*height] }
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}
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pub fn get (&self, x: usize, y: usize) -> Option<&Cell> {
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let i = self.index_of(x, y);
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self.content.get(i)
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}
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pub fn get_mut (&mut self, x: usize, y: usize) -> Option<&mut Cell> {
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let i = self.index_of(x, y);
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self.content.get_mut(i)
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}
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pub fn index_of (&self, x: usize, y: usize) -> usize {
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y * self.width + x
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}
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}
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pub fn buffer_update (buf: &mut Buffer, area: [u16;4], callback: &impl Fn(&mut Cell, u16, u16)) {
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for row in 0..area.h() {
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let y = area.y() + row;
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for col in 0..area.w() {
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let x = area.x() + col;
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if x < buf.area.width && y < buf.area.height {
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callback(buf.get_mut(x, y), col, row);
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}
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}
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}
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}
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impl Widget for &str {
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type Engine = Tui;
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fn layout (&self, _: [u16;2]) -> Perhaps<[u16;2]> {
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// TODO: line breaks
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Ok(Some([self.chars().count() as u16, 1]))
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}
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fn render (&self, to: &mut TuiOutput) -> Usually<()> {
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let [x, y, ..] = to.area();
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//let [w, h] = self.layout(to.area().wh())?.unwrap();
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Ok(to.blit(&self, x, y, None))
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}
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}
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pub struct Styled<T: Widget<Engine = Tui>>(pub Option<Style>, pub T);
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impl Widget for Styled<&str> {
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type Engine = Tui;
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fn layout (&self, _: [u16;2]) -> Perhaps<[u16;2]> {
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Ok(Some([self.1.chars().count() as u16, 1]))
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}
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fn render (&self, to: &mut TuiOutput) -> Usually<()> {
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// FIXME
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let [x, y, ..] = to.area();
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//let [w, h] = self.layout(to.area().wh())?.unwrap();
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Ok(to.blit(&self.1, x, y, None))
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}
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}
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pub struct Background(pub Color);
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impl Widget for Background {
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type Engine = Tui;
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fn layout (&self, _: [u16;2]) -> Perhaps<[u16;2]> {
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Ok(Some([0,0]))
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}
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fn render (&self, to: &mut TuiOutput) -> Usually<()> {
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Ok(to.fill_bg(to.area(), self.0))
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}
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}
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//impl<F> Widget for Layers<Tui, F>
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//where
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//F: Send + Sync + Fn(&mut dyn FnMut(&dyn Widget<Engine = Tui>)->Usually<()>)->Usually<()>
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//{
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//type Engine = Tui;
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//fn layout (&self, area: [u16;2]) -> Perhaps<[u16;2]> {
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//let mut w = 0;
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//let mut h = 0;
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//(self.0)(&mut |layer| {
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//if let Some(layer_area) = layer.layout(area)? {
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//w = w.max(layer_area.w());
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//h = h.max(layer_area.h());
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//}
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//Ok(())
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//})?;
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//Ok(Some([w, h]))
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//}
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//fn render (&self, to: &mut TuiOutput) -> Usually<()> {
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//if let Some(size) = self.layout(to.area().wh())? {
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//(self.0)(&mut |layer|to.render_in(to.area().clip(size), &layer))
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//} else {
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//Ok(())
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//}
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//}
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//}
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pub struct Border<S: BorderStyle>(pub S);
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impl<S: BorderStyle> Widget for Border<S> {
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type Engine = Tui;
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fn layout (&self, _: [u16;2]) -> Perhaps<[u16;2]> {
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Ok(Some([0, 0]))
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}
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fn render (&self, to: &mut TuiOutput) -> Usually<()> {
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let area = to.area();
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if area.w() > 2 && area.y() > 2 {
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to.blit(&self.0.nw(), area.x(), area.y(), self.0.style());
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to.blit(&self.0.ne(), area.x() + area.w() - 1, area.y(), self.0.style());
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to.blit(&self.0.sw(), area.x(), area.y() + area.h() - 1, self.0.style());
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to.blit(&self.0.se(), area.x() + area.w() - 1, area.y() + area.h() - 1, self.0.style());
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for x in area.x()+1..area.x()+area.w()-1 {
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to.blit(&self.0.n(), x, area.y(), self.0.style());
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to.blit(&self.0.s(), x, area.y() + area.h() - 1, self.0.style());
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}
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for y in area.y()+1..area.y()+area.h()-1 {
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to.blit(&self.0.w(), area.x(), y, self.0.style());
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to.blit(&self.0.e(), area.x() + area.w() - 1, y, self.0.style());
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}
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}
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Ok(())
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}
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}
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pub trait BorderStyle: Send + Sync {
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const NW: &'static str = "";
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const N: &'static str = "";
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const NE: &'static str = "";
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const E: &'static str = "";
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const SE: &'static str = "";
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const S: &'static str = "";
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const SW: &'static str = "";
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const W: &'static str = "";
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fn n (&self) -> &str {
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Self::N
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}
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fn s (&self) -> &str {
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Self::S
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}
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fn e (&self) -> &str {
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Self::E
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}
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fn w (&self) -> &str {
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Self::W
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}
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fn nw (&self) -> &str {
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Self::NW
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}
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fn ne (&self) -> &str {
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Self::NE
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}
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fn sw (&self) -> &str {
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Self::SW
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}
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fn se (&self) -> &str {
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Self::SE
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}
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#[inline]
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fn draw <'a> (&self, to: &mut TuiOutput) -> Usually<()> {
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self.draw_horizontal(to, None)?;
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self.draw_vertical(to, None)?;
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self.draw_corners(to, None)?;
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Ok(())
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}
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#[inline]
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fn draw_horizontal (&self, to: &mut TuiOutput, style: Option<Style>) -> Usually<[u16;4]> {
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let area = to.area();
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let style = style.or_else(||self.style_horizontal());
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let [x, x2, y, y2] = area.lrtb();
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for x in x..x2.saturating_sub(1) {
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self.draw_north(to, x, y, style);
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self.draw_south(to, x, y2.saturating_sub(1), style);
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}
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Ok(area)
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}
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#[inline]
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fn draw_north (&self, to: &mut TuiOutput, x: u16, y: u16, style: Option<Style>) -> () {
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to.blit(&Self::N, x, y, style)
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}
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#[inline]
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fn draw_south (&self, to: &mut TuiOutput, x: u16, y: u16, style: Option<Style>) -> () {
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to.blit(&Self::S, x, y, style)
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}
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#[inline]
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fn draw_vertical (&self, to: &mut TuiOutput, style: Option<Style>) -> Usually<[u16;4]> {
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let area = to.area();
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let style = style.or_else(||self.style_vertical());
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let [x, x2, y, y2] = area.lrtb();
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for y in y..y2.saturating_sub(1) {
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to.blit(&Self::W, x, y, style);
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to.blit(&Self::E, x2.saturating_sub(1), y, style);
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}
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Ok(area)
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}
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#[inline]
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fn draw_corners (&self, to: &mut TuiOutput, style: Option<Style>) -> Usually<[u16;4]> {
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let area = to.area();
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let style = style.or_else(||self.style_corners());
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let [x, y, width, height] = area.xywh();
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if width > 0 && height > 0 {
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to.blit(&Self::NW, x, y, style);
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to.blit(&Self::NE, x + width - 1, y, style);
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to.blit(&Self::SW, x, y + height - 1, style);
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to.blit(&Self::SE, x + width - 1, y + height - 1, style);
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}
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Ok(area)
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}
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#[inline]
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fn style (&self) -> Option<Style> {
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None
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}
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#[inline]
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fn style_horizontal (&self) -> Option<Style> {
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self.style()
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}
|
|
#[inline]
|
|
fn style_vertical (&self) -> Option<Style> {
|
|
self.style()
|
|
}
|
|
#[inline]
|
|
fn style_corners (&self) -> Option<Style> {
|
|
self.style()
|
|
}
|
|
}
|
|
|
|
macro_rules! border {
|
|
($($T:ident {
|
|
$nw:literal $n:literal $ne:literal $w:literal $e:literal $sw:literal $s:literal $se:literal
|
|
$($x:tt)*
|
|
}),+) => {$(
|
|
impl BorderStyle for $T {
|
|
const NW: &'static str = $nw;
|
|
const N: &'static str = $n;
|
|
const NE: &'static str = $ne;
|
|
const W: &'static str = $w;
|
|
const E: &'static str = $e;
|
|
const SW: &'static str = $sw;
|
|
const S: &'static str = $s;
|
|
const SE: &'static str = $se;
|
|
$($x)*
|
|
}
|
|
pub struct $T(pub Style);
|
|
impl Widget for $T {
|
|
type Engine = Tui;
|
|
fn layout (&self, _: [u16;2]) -> Perhaps<[u16;2]> {
|
|
Ok(Some([0,0]))
|
|
}
|
|
fn render (&self, to: &mut TuiOutput) -> Usually<()> {
|
|
self.draw(to)
|
|
}
|
|
}
|
|
)+}
|
|
}
|
|
|
|
border! {
|
|
Square {
|
|
"┌" "─" "┐"
|
|
"│" "│"
|
|
"└" "─" "┘"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
SquareBold {
|
|
"┏" "━" "┓"
|
|
"┃" "┃"
|
|
"┗" "━" "┛"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
Tab {
|
|
"╭" "─" "╮"
|
|
"│" "│"
|
|
"│" " " "│"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
Lozenge {
|
|
"╭" "─" "╮"
|
|
"│" "│"
|
|
"╰" "─" "╯"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
Brace {
|
|
"╭" "" "╮"
|
|
"│" "│"
|
|
"╰" "" "╯"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
LozengeDotted {
|
|
"╭" "┅" "╮"
|
|
"┇" "┇"
|
|
"╰" "┅" "╯"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
Quarter {
|
|
"▎" "▔" "🮇"
|
|
"▎" "🮇"
|
|
"▎" "▁" "🮇"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
QuarterV {
|
|
"▎" "" "🮇"
|
|
"▎" "🮇"
|
|
"▎" "" "🮇"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
Chamfer {
|
|
"🭂" "▔" "🭍"
|
|
"▎" "🮇"
|
|
"🭓" "▁" "🭞"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
Corners {
|
|
"🬆" "" "🬊" // 🬴 🬸
|
|
"" ""
|
|
"🬱" "" "🬵"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
},
|
|
CornersTall {
|
|
"🭽" "" "🭾"
|
|
"" ""
|
|
"🭼" "" "🭿"
|
|
fn style (&self) -> Option<Style> { Some(self.0) }
|
|
}
|
|
}
|
|
|
|
pub const COLOR_BG0: Color = Color::Rgb(30, 33, 36);
|
|
pub const COLOR_BG1: Color = Color::Rgb(41, 46, 57);
|
|
pub const COLOR_BG2: Color = Color::Rgb(46, 52, 64);
|
|
pub const COLOR_BG3: Color = Color::Rgb(59, 66, 82);
|
|
pub const COLOR_BG4: Color = Color::Rgb(67, 76, 94);
|
|
pub const COLOR_BG5: Color = Color::Rgb(76, 86, 106);
|
|
|
|
pub trait Theme {
|
|
const BG0: Color;
|
|
const BG1: Color;
|
|
const BG2: Color;
|
|
const BG3: Color;
|
|
const BG4: Color;
|
|
const RED: Color;
|
|
const YELLOW: Color;
|
|
const GREEN: Color;
|
|
|
|
const PLAYING: Color;
|
|
const SEPARATOR: Color;
|
|
|
|
fn bg_hier (focused: bool, entered: bool) -> Color {
|
|
if focused && entered {
|
|
Self::BG3
|
|
} else if focused {
|
|
Self::BG2
|
|
} else {
|
|
Self::BG1
|
|
}
|
|
}
|
|
|
|
fn bg_hi (focused: bool, entered: bool) -> Color {
|
|
if focused && entered {
|
|
Self::BG2
|
|
} else if focused {
|
|
Self::BG1
|
|
} else {
|
|
Self::BG0
|
|
}
|
|
}
|
|
|
|
fn bg_lo (focused: bool, entered: bool) -> Color {
|
|
if focused && entered {
|
|
Self::BG1
|
|
} else if focused {
|
|
Self::BG0
|
|
} else {
|
|
Color::Reset
|
|
}
|
|
}
|
|
|
|
fn style_hi (focused: bool, highlight: bool) -> Style {
|
|
if highlight && focused {
|
|
Style::default().yellow().not_dim()
|
|
} else if highlight {
|
|
Style::default().yellow().dim()
|
|
} else {
|
|
Style::default()
|
|
}
|
|
}
|
|
}
|
|
|
|
pub struct Nord;
|
|
|
|
impl Theme for Nord {
|
|
const BG0: Color = Color::Rgb(41, 46, 57);
|
|
const BG1: Color = Color::Rgb(46, 52, 64);
|
|
const BG2: Color = Color::Rgb(59, 66, 82);
|
|
const BG3: Color = Color::Rgb(67, 76, 94);
|
|
const BG4: Color = Color::Rgb(76, 86, 106);
|
|
const RED: Color = Color::Rgb(191, 97, 106);
|
|
const YELLOW: Color = Color::Rgb(235, 203, 139);
|
|
const GREEN: Color = Color::Rgb(163, 190, 140);
|
|
|
|
const PLAYING: Color = Color::Rgb(60, 100, 50);
|
|
const SEPARATOR: Color = Color::Rgb(0, 0, 0);
|
|
}
|