Stub the parts of PyObjC I'm using (whee)

stubs/AppKit/__init__.pyi

@@ -0,0 +1,33 @@
+from typing import Final, Literal
+
+from Foundation import CGSize
+
+# There are many other operations available but we only actually use copy, so we don't need all of them here.
+NSCompositingOperationClear: Final = 0
+NSCompositingOperationCopy: Final = 1
+NSCompositingOperation = Literal[0, 1]
+
+class NSRect:
+    pass
+
+def NSMakeRect(x: float, y: float, w: float, h: float) -> NSRect: ...
+
+class NSImage:
+    @staticmethod
+    def alloc() -> type[NSImage]: ...
+
+    @staticmethod
+    def initByReferencingFile_(file: str) -> NSImage: ...
+
+    @staticmethod
+    def initWithData_(data: bytes) -> NSImage: ...
+
+    @staticmethod
+    def initWithSize_(size: CGSize) -> NSImage: ...
+
+    def size(self) -> CGSize: ...
+
+    def lockFocus(self) -> None: ...
+    def unlockFocus(self) -> None: ...
+
+    def drawInRect_fromRect_operation_fraction_(self, inRect: NSRect, fromRect: NSRect, operation: NSCompositingOperation, fraction: float) -> None: ...