core: darwin: implement cursor_mode and cursor_shape updates

src/Core.zig

@@ -56,6 +56,7 @@ windows: mach.Objects(
         /// Vertical sync mode, prevents screen tearing.
         vsync_mode: VSyncMode = .none,
 
+        /// Window display mode: fullscreen, windowed or borderless fullscreen
         display_mode: DisplayMode = .windowed,
 
         /// Cursor
@@ -108,6 +109,7 @@ windows: mach.Objects(
             .render_attachment = true,
         },
 
+        /// Container for native platform-specific information
         native: ?Platform.Native = null,
     },
 ),

src/core/Darwin.zig

@@ -98,6 +98,31 @@ pub fn tick(core: *Core) !void {
                 frame.size.height = @floatFromInt(core.windows.get(window_id, .height));
                 native_window.setFrame_display_animate(native_window.frameRectForContentRect(frame), true, true);
             }
+
+            if (core.windows.updated(window_id, .cursor_mode)) {
+                switch (core_window.cursor_mode) {
+                    .normal => objc.app_kit.Cursor.unhide(),
+                    .disabled, .hidden => objc.app_kit.Cursor.hide(),
+                }
+            }
+
+            if (core.windows.updated(window_id, .cursor_shape)) {
+                const Cursor = objc.app_kit.Cursor;
+
+                Cursor.pop();
+
+                switch (core_window.cursor_shape) {
+                    .arrow => Cursor.arrowCursor().push(),
+                    .ibeam => Cursor.IBeamCursor().push(),
+                    .crosshair => Cursor.crosshairCursor().push(),
+                    .pointing_hand => Cursor.pointingHandCursor().push(),
+                    .not_allowed => Cursor.operationNotAllowedCursor().push(),
+                    .resize_ns => Cursor.resizeUpDownCursor().push(),
+                    .resize_ew => Cursor.resizeLeftRightCursor().push(),
+                    .resize_all => Cursor.closedHandCursor().push(),
+                    else => std.log.warn("Unsupported cursor", .{}),
+                }
+            }
         } else {
             try initWindow(core, window_id);
         }