A ton of bug fixes

src/input.rs

@@ -1,7 +1,7 @@
 use arc_swap::ArcSwap;
 use crossbeam_channel::Sender;
 use crossterm::event::{Event, KeyCode, KeyEvent, KeyEventKind, KeyModifiers};
-use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::atomic::{AtomicBool, AtomicI64, Ordering};
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 
@@ -26,6 +26,7 @@ pub struct InputContext<'a> {
     pub snapshot: &'a SequencerSnapshot,
     pub playing: &'a Arc<AtomicBool>,
     pub audio_tx: &'a ArcSwap<Sender<AudioCommand>>,
+    pub nudge_us: &'a Arc<AtomicI64>,
 }
 
 impl<'a> InputContext<'a> {
@@ -937,6 +938,11 @@ fn handle_engine_page(ctx: &mut InputContext, key: KeyEvent) -> InputResult {
                     SettingKind::Channels => ctx.app.audio.adjust_channels(-1),
                     SettingKind::BufferSize => ctx.app.audio.adjust_buffer_size(-64),
                     SettingKind::Polyphony => ctx.app.audio.adjust_max_voices(-1),
+                    SettingKind::Nudge => {
+                        let prev = ctx.nudge_us.load(Ordering::Relaxed);
+                        ctx.nudge_us
+                            .store((prev - 1000).max(-100_000), Ordering::Relaxed);
+                    }
                 }
                 ctx.app.save_settings(ctx.link);
             }
@@ -951,6 +957,11 @@ fn handle_engine_page(ctx: &mut InputContext, key: KeyEvent) -> InputResult {
                     SettingKind::Channels => ctx.app.audio.adjust_channels(1),
                     SettingKind::BufferSize => ctx.app.audio.adjust_buffer_size(64),
                     SettingKind::Polyphony => ctx.app.audio.adjust_max_voices(1),
+                    SettingKind::Nudge => {
+                        let prev = ctx.nudge_us.load(Ordering::Relaxed);
+                        ctx.nudge_us
+                            .store((prev + 1000).min(100_000), Ordering::Relaxed);
+                    }
                 }
                 ctx.app.save_settings(ctx.link);
             }