def vfunc_info_get_address(vfunc_info, gtype):
'''
GIRepository.vfunc_info_get_address almost does what we need... but it
derefs the address, so it cannot be used for our purposes. This code is
a translation of that C code into python
'''
container_info = vfunc_info.get_container()
if container_info.get_type() == GIRepository.InfoType.OBJECT:
object_info = container_info
interface_info = None
struct_info = GIRepository.object_info_get_class_struct(object_info)
else:
interface_info = container_info
object_info = None
struct_info = GIRepository.interface_info_get_iface_struct(
interface_info)
field_info = GIRepository.struct_info_find_field(struct_info,
vfunc_info.get_name())
if field_info is None:
raise AttributeError("Could not find struct field for vfunc")
implementor_class = GObject.type_class_ref(gtype)
if object_info:
implementor_vtable = implementor_class
else:
interface_type = GIRepository.registered_type_info_get_g_type(
interface_info)
implementor_vtable = GObject.type_interface_peek(
implementor_class, interface_type)
offset = GIRepository.field_info_get_offset(field_info)
return hash(implementor_vtable) + offset
def __init__(cls, name, bases, dict_):
# Let GObjectMeta do it's initialization
GObjectMeta.__init__(cls, name, bases, dict_)
do_drag_data_get = dict_.get('do_drag_data_get')
if do_drag_data_get:
repo = GIRepository.Repository.get_default()
for base in cls.__mro__:
typeinfo = repo.find_by_gtype(base.__gtype__)
if typeinfo:
vfunc = GIRepository.object_info_find_vfunc_using_interfaces(
typeinfo, 'drag_data_get')
if vfunc:
break
else:
raise AttributeError("Could not find vfunc for drag_data_get")
# Get the address of the vfunc so we can put our own callback in there
address = vfunc_info_get_address(vfunc[0], cls.__gtype__)
if address == 0:
raise AttributeError("Could not get address for drag_data_get")
# Make a thunk function closure, store it so it doesn't go out of scope
do_drag_data_get._thunk = create_drag_data_get_thunk(cls)
# Don't judge me... couldn't get a normal function pointer to work
dbl_pointer = ctypes.POINTER(ctypes.c_void_p)
addr = ctypes.cast(address, dbl_pointer)
addr.contents.value = ctypes.cast(do_drag_data_get._thunk,
ctypes.c_void_p).value
def get_required_by_typelibs():
deps = set()
repo = GIRepository.Repository()
for tl in os.listdir(repo.get_search_path()[0]):
namespace, version = os.path.splitext(tl)[0].split("-", 1)
repo.require(namespace, version, 0)
lib = repo.get_shared_library(namespace)
if lib:
deps.update(lib.split(","))
return deps
def get_required_by_typelibs():
deps = set()
repo = GIRepository.Repository()
for tl in os.listdir(repo.get_search_path()[0]):
namespace, version = os.path.splitext(tl)[0].split("-", 1)
lib = get_shared_libraries(namespace, version)
libs = lib.lower().split(",") if lib else []
for lib in libs:
deps.add((namespace, version, lib))
return deps
def test_introspected_argument_info(self):
self.assertTrue(isinstance(IntrospectedRepository.Argument.__info__,
GIRepository.UnionInfo))
arg = IntrospectedRepository.Argument()
self.assertTrue(isinstance(arg.__info__, GIRepository.UnionInfo))
old_info = IntrospectedRepository.Argument.__info__
IntrospectedRepository.Argument.__info__ = 'not an info'
self.assertRaises(TypeError, IntrospectedRepository.Argument)
IntrospectedRepository.Argument.__info__ = old_info
def _get_shared_libraries(q, namespace, version):
repo = GIRepository.Repository()
repo.require(namespace, version, 0)
lib = repo.get_shared_library(namespace)
q.put(lib)
#!/usr/bin/env python
import gi
gi.require_version("GIRepository", "2.0")
gi.require_version("Clutter", "1.0")
from gi.repository import GIRepository
from gi.repository import Clutter
from gi.repository import GObject
repo = GIRepository.Repository().get_default()
info = repo.find_by_name("Clutter", "PaintNode")
type = GIRepository.registered_type_info_get_g_type(info)
print(GObject.type_name(type))
