yoi/crates/tui/src/ui.rs
2026-04-11 02:48:50 +09:00

91 lines
2.9 KiB
Rust

use ratatui::layout::{Constraint, Layout, Position};
use ratatui::style::{Color, Modifier, Style};
use ratatui::text::{Line, Span};
use ratatui::widgets::{Block, Borders, Paragraph, Wrap};
use ratatui::Frame;
use crate::app::{App, MessageKind};
pub fn draw(frame: &mut Frame, app: &mut App) {
let chunks = Layout::vertical([
Constraint::Length(1),
Constraint::Min(3),
Constraint::Length(3),
])
.split(frame.area());
draw_status_bar(frame, app, chunks[0]);
draw_output(frame, app, chunks[1]);
draw_input(frame, app, chunks[2]);
}
fn draw_status_bar(frame: &mut Frame, app: &App, area: ratatui::layout::Rect) {
let conn_style = if app.connected {
Style::default().fg(Color::Green)
} else {
Style::default().fg(Color::Red)
};
let conn_text = if app.connected {
"connected"
} else {
"disconnected"
};
let line = Line::from(vec![
Span::styled(&app.pod_name, Style::default().add_modifier(Modifier::BOLD)),
Span::raw(" | "),
Span::styled(conn_text, conn_style),
]);
frame.render_widget(Paragraph::new(line), area);
}
fn draw_output(frame: &mut Frame, app: &mut App, area: ratatui::layout::Rect) {
let display = app.display_lines();
let lines: Vec<Line> = display
.iter()
.flat_map(|(kind, content)| {
let style = kind_style(kind);
content.lines().map(move |l| Line::from(Span::styled(l.to_owned(), style)))
})
.collect();
let total = lines.len() as u16;
let visible = area.height.saturating_sub(2); // block borders
let max_scroll = total.saturating_sub(visible);
if app.scroll > max_scroll {
app.scroll = max_scroll;
}
let block = Block::default().borders(Borders::ALL);
let paragraph = Paragraph::new(lines)
.block(block)
.wrap(Wrap { trim: false })
.scroll((app.scroll, 0));
frame.render_widget(paragraph, area);
}
fn draw_input(frame: &mut Frame, app: &App, area: ratatui::layout::Rect) {
let display = format!("> {}", app.input);
let block = Block::default().borders(Borders::ALL).title("Input");
let paragraph = Paragraph::new(display).block(block);
frame.render_widget(paragraph, area);
// Cursor position: "> " is 2 chars, plus cursor offset in the input
let cursor_x = area.x + 1 + 2 + app.input[..app.cursor].chars().count() as u16;
let cursor_y = area.y + 1;
frame.set_cursor_position(Position::new(cursor_x, cursor_y));
}
fn kind_style(kind: &MessageKind) -> Style {
match kind {
MessageKind::User => Style::default().fg(Color::Green),
MessageKind::Assistant => Style::default().fg(Color::White),
MessageKind::Tool => Style::default().fg(Color::Cyan),
MessageKind::Error => Style::default().fg(Color::Red),
MessageKind::Status => Style::default().fg(Color::DarkGray),
}
}