fix: alt-tab focus history MRU ordering, repeat handling, and quick release

src/app.rs

@@ -65,6 +65,7 @@ pub struct Settings {
     /// the overlay maps there rather than wherever the compositor would put it.
     pub scale: i32,
     pub output: String,
+    #[allow(dead_code)]
     pub alt_tab: AltTabMode,
 }
 
@@ -123,10 +124,7 @@ pub struct App {
     pub(crate) seat: Option<WlSeat>,
     pub(crate) inhibit_mgr: Option<ZwpKeyboardShortcutsInhibitManagerV1>,
     pub(crate) inhibitor: Option<ZwpKeyboardShortcutsInhibitorV1>,
-    pub(crate) alt_tab: AltTabMode,
-    pub(crate) is_alt_tab: bool,
     pub(crate) latched_modifiers: std::collections::BTreeSet<u32>,
-    pub(crate) initial_stepped: bool,
 
     /// The navigation key currently held down, and when the next repeat fires.
     pub(crate) repeat_key: Option<u32>,
@@ -188,15 +186,9 @@ impl App {
             fps,
             scale,
             output,
-            alt_tab,
+            ..
         } = settings;
-        let focused_idx = targets.iter().position(|t| t.focused).unwrap_or(0);
-        let sel = if alt_tab == AltTabMode::Yes && targets.len() > 1 {
-            (focused_idx + 1) % targets.len()
-        } else {
-            focused_idx
-        };
-        let is_alt_tab = alt_tab == AltTabMode::Yes;
+        let sel = if targets.len() > 1 { 1 } else { 0 };
         // Bind everything up front so a compositor missing a protocol fails
         // here, with a name, rather than halfway through a capture.
         let mut app = Self {
@@ -237,10 +229,7 @@ impl App {
             seat: None,
             inhibit_mgr: None,
             inhibitor: None,
-            alt_tab,
-            is_alt_tab,
             latched_modifiers: std::collections::BTreeSet::new(),
-            initial_stepped: alt_tab == AltTabMode::Yes,
             repeat_key: None,
             repeat_next: None,
             repeat_delay_ms: 600,