Add "Reset Zoom" action and application menu item

crates/zed/src/menus.rs

@@ -164,6 +164,10 @@ pub fn menus() -> Vec<Menu<'static>> {
                     name: "Zoom Out",
                     action: Box::new(super::DecreaseBufferFontSize),
                 },
+                MenuItem::Action {
+                    name: "Reset Zoom",
+                    action: Box::new(super::ResetBufferFontSize),
+                },
                 MenuItem::Separator,
                 MenuItem::Action {
                     name: "Project Browser",

crates/zed/src/zed.rs

@@ -43,6 +43,7 @@ actions!(
         OpenKeymap,
         IncreaseBufferFontSize,
         DecreaseBufferFontSize,
+        ResetBufferFontSize,
         InstallCommandLineInterface,
     ]
 );
@@ -72,6 +73,12 @@ pub fn init(app_state: &Arc<AppState>, cx: &mut gpui::MutableAppContext) {
             cx.refresh_windows();
         });
     });
+    cx.add_global_action(move |_: &ResetBufferFontSize, cx| {
+        cx.update_global::<Settings, _, _>(|settings, cx| {
+            settings.buffer_font_size = settings.default_buffer_font_size;
+            cx.refresh_windows();
+        });
+    });
     cx.add_global_action(move |_: &InstallCommandLineInterface, cx| {
         cx.spawn(|cx| async move { install_cli(&cx).await.context("error creating CLI symlink") })
             .detach_and_log_err(cx);