git.maemo.org Git - retroconv/blob - bak/pygobject.py

   1 from ctypes import *
   2 import sys
   3 import ctypes
   4
   5 import gobject
   6
   7 # -------------------------------------------------------------------------
   8 class _PyGObject_Functions(ctypes.Structure):
   9     """GObject <-> Python mapping from http://faq.pygtk.org/index.py?req=show&file=faq23.041.htp"""
  10     _fields_ = [
  11         ('register_class',
  12          ctypes.PYFUNCTYPE(ctypes.c_void_p, ctypes.c_char_p,
  13                            ctypes.c_int, ctypes.py_object,
  14                            ctypes.py_object)),
  15         ('register_wrapper',
  16          ctypes.PYFUNCTYPE(ctypes.c_void_p, ctypes.py_object)),
  17         ('register_sinkfunc',
  18          ctypes.PYFUNCTYPE(ctypes.py_object, ctypes.c_void_p)),
  19         ('lookupclass',
  20          ctypes.PYFUNCTYPE(ctypes.py_object, ctypes.c_int)),
  21         ('newgobj',
  22          ctypes.PYFUNCTYPE(ctypes.py_object, ctypes.c_void_p)),
  23         ]
  24
  25
  26 # -------------------------------------------------------------------------
  27 class PyGObjectCAPI(object):
  28     """GObject <-> Python mapping from http://faq.pygtk.org/index.py?req=show&file=faq23.041.htp"""
  29
  30     def __init__(self):
  31         addr = ctypes.pythonapi.PyCObject_AsVoidPtr(
  32             ctypes.py_object(gobject._PyGObject_API))
  33         self._api = _PyGObject_Functions.from_address(addr)
  34
  35     def pygobject_new(self, addr):
  36         return self._api.newgobj(addr)
  37
  38
  39 # -------------------------------------------------------------------------
  40 class GList(Structure):
  41     """GList representation and convenience functions, based on Java's Iterable.
  42
  43        Copyright (c) Andrew Flegg <andrew@bleb.org> 2009.
  44        Released under the Artistic Licence."""
  45
  46
  47     # -----------------------------------------------------------------------
  48     @classmethod
  49     def new(clazz, ptr = None):
  50         """Return a reference to an empty, or valid, GList at the
  51            given pointer address."""
  52
  53         if ptr:
  54             return cast(c_void_p(ptr), POINTER(GList)).contents
  55         else:
  56             return GList()
  57
  58
  59     # -----------------------------------------------------------------------
  60     _fields_ = [('_data', c_void_p),
  61                 ('_next', c_void_p),
  62                 ('_prev', c_void_p)]
  63
  64     _ptr = None # Initialises to before the list for `while(has_next)...'
  65
  66
  67     # -----------------------------------------------------------------------
  68     def reset(self):
  69         """Rewind the iterable to the start of the list."""
  70
  71         self._ptr = None
  72
  73     # -----------------------------------------------------------------------
  74     def has_next(self):
  75         """Return True if the list has an item on which next can be called."""
  76
  77         return (not self._ptr and self._data) or (self._ptr and self._ptr._next)
  78
  79
  80     # -----------------------------------------------------------------------
  81     def next(self, as_a = None):
  82         """Move the pointer on to the next item in the list and return its value, or
  83            raise an exception if already on the last."""
  84
  85         if self._ptr and not self._ptr._next:
  86             raise Exception("IndexOutOfBounds")
  87
  88         self._ptr = self._ptr and cast(self._ptr._next, POINTER(GList)).contents or self
  89         if not self._ptr._data:
  90             return None
  91         elif as_a:
  92             return cast(self._ptr._data, POINTER(as_a)).contents
  93         else:
  94             return self._ptr._data
  95
  96
  97     # -----------------------------------------------------------------------
  98     def set(self, value):
  99         """Set the data in the current position in the list."""
 100
 101         if not self._ptr:
 102             self._ptr = self
 103
 104         self._ptr._data = cast(value, c_void_p);
 105
 106
 107
 108     # -----------------------------------------------------------------------
 109     def add(self):
 110         """Add a new entry on to the end of the list, ready to be "set"."""
 111
 112         self.reset()
 113         while self.has_next():
 114             self.next()
 115
 116         if not self._ptr:
 117             self._ptr = self
 118         else:
 119             new = GList()
 120             new._prev = addressof(self._ptr)
 121             self._ptr._next = addressof(new)
 122             self._ptr = new
 123
 124
 125 # -------------------------------------------------------------------------
 126 class EContactPhoto_inlined(Structure):
 127     _fields_ = [('mime_type', c_char_p),
 128                 ('length', c_uint),
 129                 ('data', c_void_p)]
 130
 131 class EContactPhoto_data(Union):
 132     _fields_ = [('inlined', EContactPhoto_inlined),
 133                 ('uri', c_char_p)]
 134
 135 class EContactPhoto(Structure):
 136     _fields_ = [('type', c_int),
 137                 ('data', EContactPhoto_data)]
 138
 139 class EContactDate(Structure):
 140     _fields_ = [('year', c_uint),
 141                 ('month', c_uint),
 142                 ('day', c_uint)]
 143
 144 # -------------------------------------------------------------------------
 145 class EVCardAttribute(Structure):
 146     _fields_ = [('group', c_char_p),
 147                ('name', c_char_p),
 148                ('params', POINTER(GList)),
 149                ('values', POINTER(GList)),]
 150
 151     def value(self):
 152         if not self.values:
 153             return None
 154
 155         return self.values.contents
 156