GeoDjango spatial reference fixes (#1265)

* Make SpatialReference accept int
* Make CoordTransform only accept SpatialReference
* Narrow OGRGeometry.transform's accepted types
* Narrow GEOSGeometryBase.transform's accepted types

Author: mjakob

django-stubs/contrib/gis/gdal/geometries.pyi

@@ -1,5 +1,6 @@
 from typing import Any
 
+from django.contrib.gis.gdal import CoordTransform, SpatialReference
 from django.contrib.gis.gdal.base import GDALBase as GDALBase
 
 class OGRGeometry(GDALBase):
@@ -63,7 +64,7 @@ class OGRGeometry(GDALBase):
     def ewkt(self) -> Any: ...
     def clone(self) -> Any: ...
     def close_rings(self) -> None: ...
-    def transform(self, coord_trans: Any, clone: bool = ...) -> Any: ...
+    def transform(self, coord_trans: CoordTransform | SpatialReference | str | int, clone: bool = ...) -> Any: ...
     def intersects(self, other: Any) -> Any: ...
     def equals(self, other: Any) -> Any: ...
     def disjoint(self, other: Any) -> Any: ...

django-stubs/contrib/gis/gdal/srs.pyi

@@ -11,7 +11,7 @@ class SpatialReference(GDALBase):
     destructor: Any
     axis_order: Any
     ptr: Any
-    def __init__(self, srs_input: str = ..., srs_type: str = ..., axis_order: Any | None = ...) -> None: ...
+    def __init__(self, srs_input: str | int = ..., srs_type: str = ..., axis_order: Any | None = ...) -> None: ...
     def __getitem__(self, target: Any) -> Any: ...
     def attr_value(self, target: Any, index: int = ...) -> Any: ...
     def auth_name(self, target: Any) -> Any: ...
@@ -64,4 +64,4 @@ class SpatialReference(GDALBase):
 class CoordTransform(GDALBase):
     destructor: Any
     ptr: Any
-    def __init__(self, source: Any, target: Any) -> None: ...
+    def __init__(self, source: SpatialReference, target: SpatialReference) -> None: ...

django-stubs/contrib/gis/geos/geometry.pyi

@@ -1,6 +1,7 @@
 from typing import Any, TypeVar
 
 from _typeshed import Self
+from django.contrib.gis.gdal import CoordTransform, SpatialReference
 from django.contrib.gis.geometry import hex_regex as hex_regex  # noqa: F401
 from django.contrib.gis.geometry import json_regex as json_regex
 from django.contrib.gis.geometry import wkt_regex as wkt_regex
@@ -92,7 +93,7 @@ class GEOSGeometryBase(GEOSBase):
     @property
     def crs(self) -> Any: ...
     ptr: Any
-    def transform(self, ct: Any, clone: bool = ...) -> Any: ...
+    def transform(self, ct: CoordTransform | SpatialReference | str | int, clone: bool = ...) -> Any: ...
     @property
     def boundary(self) -> Any: ...
     def buffer(self, width: Any, quadsegs: int = ...) -> Any: ...