rust_synth/tui/
tracks.rs

1//! Track list widget — gain bars + mute/active state.
2
3use ratatui::layout::Rect;
4use ratatui::style::{Color, Modifier, Style};
5use ratatui::widgets::{Block, Borders, List, ListItem};
6use ratatui::Frame;
7
8use super::app::AppState;
9use crate::audio::engine::EngineHandle;
10
11pub fn render(f: &mut Frame, area: Rect, engine: &EngineHandle, app: &AppState) {
12    let tracks = engine.tracks.lock();
13    let items: Vec<ListItem> = tracks
14        .iter()
15        .enumerate()
16        .map(|(i, t)| {
17            let snap = t.params.snapshot();
18            let marker = if i == app.selected_track { "▶" } else { " " };
19            let status = if snap.muted { "·" } else { "●" };
20            let gain_bar = bar(snap.gain * (if snap.muted { 0.0 } else { 1.0 }), 10);
21            let line = format!(
22                "{marker} {status} {name:<14} {bar} {f:>5.1}Hz",
23                name = t.name,
24                bar = gain_bar,
25                f = snap.freq,
26            );
27            let style = if i == app.selected_track {
28                Style::default().fg(Color::Yellow).add_modifier(Modifier::BOLD)
29            } else if snap.muted {
30                Style::default().fg(Color::DarkGray)
31            } else {
32                Style::default().fg(Color::White)
33            };
34            ListItem::new(line).style(style)
35        })
36        .collect();
37
38    let list = List::new(items).block(
39        Block::default()
40            .borders(Borders::ALL)
41            .title(" tracks ")
42            .title_style(Style::default().add_modifier(Modifier::BOLD)),
43    );
44    f.render_widget(list, area);
45}
46
47fn bar(v: f32, width: usize) -> String {
48    let filled = (v.clamp(0.0, 1.0) * width as f32).round() as usize;
49    let empty = width.saturating_sub(filled);
50    format!("[{}{}]", "█".repeat(filled), "·".repeat(empty))
51}
rust_synth/tui/tracks.rs

rust_synth/tui/
tracks.rs
