macos: support cursor style

src/apprt/embedded.zig

@@ -11,6 +11,7 @@ const Allocator = std.mem.Allocator;
 const objc = @import("objc");
 const apprt = @import("../apprt.zig");
 const input = @import("../input.zig");
+const terminal = @import("../terminal/main.zig");
 const CoreApp = @import("../App.zig");
 const CoreSurface = @import("../Surface.zig");
 const configpkg = @import("../config.zig");
@@ -48,6 +49,9 @@ pub const App = struct {
         /// Called to set the title of the window.
         set_title: *const fn (SurfaceUD, [*]const u8) callconv(.C) void,
 
+        /// Called to set the cursor shape.
+        set_cursor_shape: *const fn (SurfaceUD, terminal.CursorShape) callconv(.C) void,
+
         /// Read the clipboard value. The return value must be preserved
         /// by the host until the next call. If there is no valid clipboard
         /// value then this should return null.
@@ -310,6 +314,13 @@ pub const Surface = struct {
         );
     }
 
+    pub fn setCursorShape(self: *Surface, shape: terminal.CursorShape) !void {
+        self.app.opts.set_cursor_shape(
+            self.opts.userdata,
+            shape,
+        );
+    }
+
     pub fn supportsClipboard(
         self: *const Surface,
         clipboard_type: apprt.Clipboard,

src/terminal/cursor_shape.zig

@@ -3,6 +3,8 @@ const std = @import("std");
 /// The possible cursor shapes. Not all app runtimes support these shapes.
 /// The shapes are always based on the W3C supported cursor styles so we
 /// can have a cross platform list.
+//
+// Must be kept in sync with ghostty_cursor_shape_e
 pub const CursorShape = enum(c_int) {
     default,
     context_menu,