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authorJohan Dahlin <johan@src.gnome.org>2004-07-17 16:38:46 +0000
committerJohan Dahlin <johan@src.gnome.org>2004-07-17 16:38:46 +0000
commitb889f44c6adeaf10d5e1ae0a2e69ef5ee218ccad (patch)
tree6db2e280696773afe0d2d54425441ed1abc5ee4b /gobject/pygflags.c
parent8238d9cc0fce600328f50efa139db1f575058ae8 (diff)
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gtk/*.override
* gtk/*.override * codegen/codegen.py: * codegen/argtypes.py: Update for enums * pygtype.c (pyg_value_as_pyobject): Use new enum/flag functions * pygenum.[ch]: Handle GFlag * pygflags.[ch]: Handle GFlag * atk-types.defs: Fix gtype-id for all enums * gobjectmodule.c (initgobject): Clean up and add convinience macros * tests/enum.py: New file * tests/common.py: New file, also stole from gst-python
Diffstat (limited to 'gobject/pygflags.c')
-rw-r--r--gobject/pygflags.c367
1 files changed, 367 insertions, 0 deletions
diff --git a/gobject/pygflags.c b/gobject/pygflags.c
new file mode 100644
index 0000000..2c37cc1
--- /dev/null
+++ b/gobject/pygflags.c
@@ -0,0 +1,367 @@
+/* -*- Mode: C; c-basic-offset: 4 -*-
+ * pygtk- Python bindings for the GTK toolkit.
+ * Copyright (C) 1998-2003 James Henstridge
+ * Copyright (C) 2004 Johan Dahlin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "pygobject-private.h"
+#include "pygflags.h"
+
+static const gchar *pygflags_class_id = "PyGFlags::class";
+static GQuark pygflags_class_key = 0;
+
+#define GET_INT_VALUE(x) (((PyIntObject*)x)->ob_ival)
+static int
+pyg_flags_compare(PyGFlags *self, PyObject *other)
+{
+ if (!PyInt_CheckExact(other) && ((PyGFlags*)other)->gtype != self->gtype) {
+ PyErr_Warn(PyExc_Warning, "comparing different flags types");
+ return -1;
+ }
+
+ if (GET_INT_VALUE(self) == GET_INT_VALUE(other))
+ return 0;
+ else if (GET_INT_VALUE(self) > GET_INT_VALUE(other))
+ return -1;
+ else
+ return 1;
+}
+
+static char *
+generate_repr(GType gtype, int value)
+{
+ GFlagsClass *flags_class;
+ char *retval = NULL, *tmp;
+ int i;
+
+ flags_class = g_type_class_ref(gtype);
+ g_assert(G_IS_FLAGS_CLASS(flags_class));
+
+ for (i = 0; i < flags_class->n_values; i++) {
+ if ((value & flags_class->values[i].value) == flags_class->values[i].value) {
+ if (retval) {
+ tmp = g_strdup_printf("%s | %s", retval, flags_class->values[i].value_name);
+ g_free(retval);
+ retval = tmp;
+ } else {
+ retval = g_strdup_printf("%s", flags_class->values[i].value_name);
+ }
+ }
+ }
+
+ g_type_class_unref(flags_class);
+
+ return retval;
+}
+
+static PyObject *
+pyg_flags_repr(PyGFlags *self)
+{
+ char *tmp, *retval;
+ PyObject *pyretval;
+
+ tmp = generate_repr(self->gtype,
+ self->parent.ob_ival);
+
+ retval = g_strdup_printf("<flag %s of type %s>", tmp,
+ g_type_name(self->gtype));
+ g_free(tmp);
+
+ pyretval = PyString_FromString(retval);
+ g_free(retval);
+
+ return pyretval;
+}
+
+static PyObject *
+pyg_flags_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
+{
+ static char *kwlist[] = { "value", NULL };
+ long value;
+ PyObject *pytc, *values, *ret;
+ GType gtype;
+ GFlagsClass *eclass;
+
+ if (!PyArg_ParseTupleAndKeywords(args, kwargs, "l", kwlist, &value))
+ return NULL;
+
+ pytc = PyObject_GetAttrString((PyObject *)type, "__gtype__");
+ if (!pytc)
+ return NULL;
+
+ if (!PyObject_TypeCheck(pytc, &PyGFlags_Type)) {
+ Py_DECREF(pytc);
+ PyErr_SetString(PyExc_TypeError,
+ "__gtype__ attribute not a typecode");
+ return NULL;
+ }
+
+ gtype = pyg_type_from_object(pytc);
+ Py_DECREF(pytc);
+
+ eclass = G_FLAGS_CLASS(g_type_class_ref(gtype));
+
+ if (value < 0 || value > eclass->n_values) {
+ PyErr_SetString(PyExc_ValueError, "value out of range");
+ g_type_class_unref(eclass);
+ return NULL;
+ }
+
+ values = PyObject_GetAttrString((PyObject *)type, "__flags_values__");
+ if (!values) {
+ g_type_class_unref(eclass);
+ return NULL;
+ }
+
+ if (!PyTuple_Check(values) || PyTuple_Size(values) != eclass->n_values) {
+ PyErr_SetString(PyExc_TypeError, "__flags_values__ badly formed");
+ Py_DECREF(values);
+ g_type_class_unref(eclass);
+ return NULL;
+ }
+
+ g_type_class_unref(eclass);
+
+ ret = PyTuple_GetItem(values, value);
+ Py_INCREF(ret);
+ Py_DECREF(values);
+ return ret;
+}
+
+PyObject*
+pyg_flags_from_gtype (GType gtype, int value)
+{
+ PyObject *pyclass, *values, *retval;
+
+ g_return_val_if_fail(gtype != G_TYPE_INVALID, NULL);
+
+ pyclass = (PyObject*)g_type_get_qdata(gtype, pygflags_class_key);
+ g_assert(pyclass != NULL);
+
+ values = PyDict_GetItemString(((PyTypeObject *)pyclass)->tp_dict,
+ "__flags_values__");
+ retval = PyTuple_GetItem(values, value);
+ if (!retval) {
+ PyErr_Clear();
+
+ retval = ((PyTypeObject *)pyclass)->tp_alloc((PyTypeObject *)pyclass, 0);
+ g_assert(retval != NULL);
+
+ ((PyIntObject*)retval)->ob_ival = value;
+ ((PyGFlags*)retval)->gtype = gtype;
+ }
+
+ Py_INCREF(retval);
+ return retval;
+}
+
+PyObject *
+pyg_flags_add (PyObject * module,
+ const char * typename,
+ const char * strip_prefix,
+ GType gtype)
+{
+ PyObject *instance_dict, *stub, *values;
+ GFlagsClass *eclass;
+ int i;
+
+ g_return_val_if_fail(module != NULL, NULL);
+ g_return_val_if_fail(typename != NULL, NULL);
+ g_return_val_if_fail(g_type_is_a(gtype, G_TYPE_FLAGS), NULL);
+
+ instance_dict = PyDict_New();
+ stub = PyObject_CallFunction((PyObject *)&PyType_Type, "s(O)O",
+ typename, (PyObject *)&PyGFlags_Type,
+ instance_dict);
+ Py_DECREF(instance_dict);
+ if (!stub) {
+ PyErr_SetString(PyExc_RuntimeError, "can't create const");
+ return NULL;
+ }
+
+ PyDict_SetItemString(((PyTypeObject *)stub)->tp_dict,
+ "__module__",
+ PyString_FromString(PyModule_GetName(module)));
+
+ /* Add it to the module name space */
+ PyModule_AddObject(module, (char*)typename, stub);
+ Py_INCREF(stub);
+
+ if (!pygflags_class_key)
+ pygflags_class_key = g_quark_from_static_string(pygflags_class_id);
+
+ g_type_set_qdata(gtype, pygflags_class_key, stub);
+
+ /* Register flag values */
+ eclass = G_FLAGS_CLASS(g_type_class_ref(gtype));
+
+ values = PyTuple_New(eclass->n_values);
+ for (i = 0; i < eclass->n_values; i++) {
+ PyObject *item;
+
+ item = ((PyTypeObject *)stub)->tp_alloc((PyTypeObject *)stub, 0);
+ ((PyIntObject*)item)->ob_ival = eclass->values[i].value;
+ ((PyGFlags*)item)->gtype = gtype;
+
+ PyTuple_SetItem(values, i, item);
+
+ PyModule_AddObject(module,
+ pyg_constant_strip_prefix(eclass->values[i].value_name,
+ strip_prefix),
+ item);
+ Py_INCREF(item);
+ }
+
+ PyDict_SetItemString(((PyTypeObject *)stub)->tp_dict,
+ "__flags_values__", values);
+ Py_DECREF(values);
+
+ g_type_class_unref(eclass);
+
+ return stub;
+}
+
+static PyObject *
+pyg_flags_and(PyGFlags *a, PyGFlags *b)
+{
+ if (!PyGFlags_Check(a) || !PyGFlags_Check(b))
+ return PyInt_Type.tp_as_number->nb_and((PyObject*)a,
+ (PyObject*)b);
+
+ return pyg_flags_from_gtype(a->gtype,
+ GET_INT_VALUE(a) & GET_INT_VALUE(b));
+}
+
+static PyObject *
+pyg_flags_or(PyGFlags *a, PyGFlags *b)
+{
+ if (!PyGFlags_Check(a) || !PyGFlags_Check(b))
+ return PyInt_Type.tp_as_number->nb_or((PyObject*)a,
+ (PyObject*)b);
+
+ return pyg_flags_from_gtype(a->gtype, GET_INT_VALUE(a) | GET_INT_VALUE(b));
+}
+
+static PyObject *
+pyg_flags_xor(PyGFlags *a, PyGFlags *b)
+{
+ if (!PyGFlags_Check(a) || !PyGFlags_Check(b))
+ return PyInt_Type.tp_as_number->nb_xor((PyObject*)a,
+ (PyObject*)b);
+
+ return pyg_flags_from_gtype(a->gtype,
+ GET_INT_VALUE(a) ^ GET_INT_VALUE(b));
+
+}
+
+static PyObject *
+pyg_flags_warn (PyObject *self, PyObject *args)
+{
+ if (PyErr_Warn(PyExc_Warning, "unsupported arithmetic operation for flags type"))
+ return NULL;
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyNumberMethods pyg_flags_as_number = {
+ (binaryfunc)pyg_flags_warn, /* nb_add */
+ (binaryfunc)pyg_flags_warn, /* nb_subtract */
+ (binaryfunc)pyg_flags_warn, /* nb_multiply */
+ (binaryfunc)pyg_flags_warn, /* nb_divide */
+ (binaryfunc)pyg_flags_warn, /* nb_remainder */
+ (binaryfunc)pyg_flags_warn, /* nb_divmod */
+ (ternaryfunc)pyg_flags_warn, /* nb_power */
+ 0, /* nb_negative */
+ 0, /* nb_positive */
+ 0, /* nb_absolute */
+ 0, /* nb_nonzero */
+ 0, /* nb_invert */
+ 0, /* nb_lshift */
+ 0, /* nb_rshift */
+ (binaryfunc)pyg_flags_and, /* nb_and */
+ (binaryfunc)pyg_flags_xor, /* nb_xor */
+ (binaryfunc)pyg_flags_or, /* nb_or */
+ 0, /* nb_coerce */
+ 0, /* nb_int */
+ 0, /* nb_long */
+ 0, /* nb_float */
+ 0, /* nb_oct */
+ 0, /* nb_hex */
+ 0, /* nb_inplace_add */
+ 0, /* nb_inplace_subtract */
+ 0, /* nb_inplace_multiply */
+ 0, /* nb_inplace_divide */
+ 0, /* nb_inplace_remainder */
+ 0, /* nb_inplace_power */
+ 0, /* nb_inplace_lshift */
+ 0, /* nb_inplace_rshift */
+ 0, /* nb_inplace_and */
+ 0, /* nb_inplace_xor */
+ 0, /* nb_inplace_or */
+ 0, /* nb_floor_divide */
+ 0, /* nb_true_divide */
+ 0, /* nb_inplace_floor_divide */
+ 0, /* nb_inplace_true_divide */
+};
+
+PyTypeObject PyGFlags_Type = {
+ PyObject_HEAD_INIT(NULL)
+ 0,
+ "gobject.GFlags",
+ sizeof(PyGFlags),
+ 0,
+ 0, /* tp_dealloc */
+ 0, /* tp_print */
+ 0, /* tp_getattr */
+ 0, /* tp_setattr */
+ (cmpfunc)pyg_flags_compare, /* tp_compare */
+ (reprfunc)pyg_flags_repr, /* tp_repr */
+ &pyg_flags_as_number, /* tp_as_number */
+ 0, /* tp_as_sequence */
+ 0, /* tp_as_mapping */
+ 0, /* tp_hash */
+ 0, /* tp_call */
+ (reprfunc)pyg_flags_repr, /* tp_str */
+ 0, /* tp_getattro */
+ 0, /* tp_setattro */
+ 0, /* tp_as_buffer */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
+ 0, /* tp_doc */
+ 0, /* tp_traverse */
+ 0, /* tp_clear */
+ 0, /* tp_richcompare */
+ 0, /* tp_weaklistoffset */
+ 0, /* tp_iter */
+ 0, /* tp_iternext */
+ 0, /* tp_methods */
+ 0, /* tp_members */
+ 0, /* tp_getset */
+ &PyInt_Type, /* tp_base */
+ 0, /* tp_dict */
+ 0, /* tp_descr_get */
+ 0, /* tp_descr_set */
+ 0, /* tp_dictoffset */
+ 0, /* tp_init */
+ 0, /* tp_alloc */
+ pyg_flags_new, /* tp_new */
+};