support app quitting to close all windows

src/App.zig

@@ -74,7 +74,8 @@ pub fn wakeup(self: App) void {
 /// Run the main event loop for the application. This blocks until the
 /// application quits or every window is closed.
 pub fn run(self: *App) !void {
-    while (self.windows.items.len > 0) {
+    var quit: bool = false;
+    while (!quit and self.windows.items.len > 0) {
         // Block for any glfw events.
         try glfw.waitEvents();
 
@@ -100,12 +101,12 @@ pub fn run(self: *App) !void {
         }
 
         // Drain our mailbox
-        try self.drainMailbox();
+        try self.drainMailbox(&quit);
     }
 }
 
 /// Drain the mailbox.
-fn drainMailbox(self: *App) !void {
+fn drainMailbox(self: *App, quit: *bool) !void {
     var drain = self.mailbox.drain();
     defer drain.deinit();
 
@@ -113,6 +114,7 @@ fn drainMailbox(self: *App) !void {
         log.debug("mailbox message={}", .{message});
         switch (message) {
             .new_window => try self.newWindow(),
+            .quit => quit.* = true,
         }
     }
 }
@@ -134,4 +136,7 @@ fn newWindow(self: *App) !void {
 pub const Message = union(enum) {
     /// Create a new terminal window.
     new_window: void,
+
+    /// Quit
+    quit: void,
 };

src/Window.zig

@@ -342,7 +342,7 @@ pub fn create(alloc: Allocator, app: *App, config: *const Config) !*Window {
         .grid_size = grid_size,
         .config = config,
 
-        .imgui_ctx = if (!DevMode.enabled) void else try imgui.Context.create(),
+        .imgui_ctx = if (!DevMode.enabled) {} else try imgui.Context.create(),
     };
     errdefer if (DevMode.enabled) self.imgui_ctx.destroy();
 
@@ -766,6 +766,13 @@ fn keyCallback(
                 },
 
                 .close_window => win.window.setShouldClose(true),
+
+                .quit => {
+                    _ = win.app.mailbox.push(.{
+                        .quit = {},
+                    }, .{ .instant = {} });
+                    win.app.wakeup();
+                },
             }
 
             // Bindings always result in us ignoring the char if printable

src/config.zig

@@ -168,6 +168,14 @@ pub const Config = struct {
             .{ .close_window = {} },
         );
 
+        if (builtin.os.tag == .macos) {
+            try result.keybind.set.put(
+                alloc,
+                .{ .key = .q, .mods = .{ .super = true } },
+                .{ .close_window = {} },
+            );
+        }
+
         return result;
     }
 

src/input/Binding.zig

@@ -139,6 +139,9 @@ pub const Action = union(enum) {
 
     /// Close the current window
     close_window: void,
+
+    /// Quit ghostty
+    quit: void,
 };
 
 /// Trigger is the associated key state that can trigger an action.