apprt/gtk: about window

build.zig

@@ -206,7 +206,11 @@ pub fn build(b: *std.Build) !void {
 
     const exe_options = b.addOptions();
     exe_options.addOption(std.SemanticVersion, "app_version", version);
-    exe_options.addOption([]const u8, "app_version_string", b.fmt("{}", .{version}));
+    exe_options.addOption([:0]const u8, "app_version_string", try std.fmt.allocPrintZ(
+        b.allocator,
+        "{}",
+        .{version},
+    ));
     exe_options.addOption(bool, "tracy_enabled", tracy);
     exe_options.addOption(bool, "flatpak", flatpak);
     exe_options.addOption(apprt.Runtime, "app_runtime", app_runtime);

src/apprt/gtk/App.zig

@@ -448,7 +448,13 @@ fn initMenu(self: *App) void {
         defer c.g_object_unref(section);
         c.g_menu_append_section(menu, null, @ptrCast(@alignCast(section)));
         c.g_menu_append(section, "Close Window", "win.close");
-        c.g_menu_append(section, "Quit Ghostty", "app.quit");
+    }
+
+    {
+        const section = c.g_menu_new();
+        defer c.g_object_unref(section);
+        c.g_menu_append_section(menu, null, @ptrCast(@alignCast(section)));
+        c.g_menu_append(section, "About Ghostty", "win.about");
     }
 
     // {

src/apprt/gtk/Window.zig

@@ -3,6 +3,7 @@ const Window = @This();
 
 const std = @import("std");
 const builtin = @import("builtin");
+const build_config = @import("../../build_config.zig");
 const Allocator = std.mem.Allocator;
 const assert = std.debug.assert;
 const configpkg = @import("../../config.zig");
@@ -162,6 +163,7 @@ pub fn init(self: *Window, app: *App) !void {
 /// here. The string name binds them.
 fn initActions(self: *Window) void {
     const actions = .{
+        .{ "about", &gtkActionAbout },
         .{ "close", &gtkActionClose },
         .{ "new_window", &gtkActionNewWindow },
         .{ "new_tab", &gtkActionNewTab },
@@ -486,6 +488,29 @@ fn getNotebookPageIndex(page: *c.GtkNotebookPage) c_int {
     return c.g_value_get_int(&value);
 }
 
+fn gtkActionAbout(
+    _: *c.GSimpleAction,
+    _: *c.GVariant,
+    ud: ?*anyopaque,
+) callconv(.C) void {
+    const self: *Window = @ptrCast(@alignCast(ud orelse return));
+
+    c.gtk_show_about_dialog(
+        self.window,
+        "program-name",
+        "Ghostty",
+        "logo-icon-name",
+        "com.mitchellh.ghostty",
+        "title",
+        "About Ghostty",
+        "version",
+        build_config.version_string.ptr,
+        "website",
+        "https://github.com/mitchellh/ghostty",
+        @as(?*anyopaque, null),
+    );
+}
+
 fn gtkActionClose(
     _: *c.GSimpleAction,
     _: *c.GVariant,