/*
*
* Copyright (C) 2006 MeVis Research GmbH All Rights Reserved.
*
* 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* 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
*
* Contact information: MeVis Research GmbH, Universitaetsallee 29,
* 28359 Bremen, Germany or:
*
* http://www.mevis.de
*
*/
//----------------------------------------------------------------------------------
/*!
// \file PythonQtWrapper.cpp
// \author Florian Link
// \author Last changed by $Author: florian $
// \date 2006-05
*/
//----------------------------------------------------------------------------------
#include "PythonQtWrapper.h"
#include <QObject>
#include "PythonQt.h"
#include "PythonQtSlot.h"
#include "PythonQtClassInfo.h"
#include "PythonQtConversion.h"
static void PythonQtWrapper_dealloc(PythonQtWrapper* self)
{
if (self->_wrappedPtr) {
//mlabDebugConst("Python","c++ wrapper removed " << self->_wrappedPtr << " " << self->_obj->className() << " " << self->_info->wrappedClassName().latin1());
PythonQt::priv()->removeWrapperPointer(self->_wrappedPtr);
// we own our qobject, so we delete it now:
delete self->_obj;
self->_obj = NULL;
if (self->_ownedByPythonQt) {
PythonQtSlotInfo* slot = PythonQt::priv()->getDestructorSlot(self->_info->wrappedCPPClassName());
if (slot) {
void* args[2];
args[0] = NULL;
args[1] = &self->_wrappedPtr;
slot->decorator()->qt_metacall(QMetaObject::InvokeMetaMethod, slot->slotIndex(), args);
self->_wrappedPtr = NULL;
} else {
// TODO: print a warning? we can not destroy that object
}
}
} else if (self->_obj) {
//mlabDebugConst("Python","qobject wrapper removed " << self->_obj->className() << " " << self->_info->wrappedClassName().latin1());
PythonQt::priv()->removeWrapperPointer(self->_obj);
if (self->_ownedByPythonQt) {
if (!self->_obj->parent()) {
delete self->_obj;
self->_obj = NULL;
}
}
}
self->ob_type->tp_free((PyObject*)self);
}
static PyObject* PythonQtWrapper_new(PyTypeObject *type, PyObject * /*args*/, PyObject * /*kwds*/)
{
PythonQtWrapper *self;
self = (PythonQtWrapper *)type->tp_alloc(type, 0);
if (self != NULL) {
self->_info = NULL;
self->_obj = NULL;
self->_wrappedPtr = NULL;
self->_ownedByPythonQt = false;
}
return (PyObject *)self;
}
static int PythonQtWrapper_init(PythonQtWrapper * /*self*/, PyObject * /*args*/, PyObject * /*kwds*/)
{
return 0;
}
static PyObject *PythonQtWrapper_classname(PythonQtWrapper* type)
{
return PyString_FromString(type->_info->className());
}
static PyObject *PythonQtWrapper_help(PythonQtWrapper* type)
{
return PythonQt::self()->helpCalled(type->_info);
}
static PyMethodDef PythonQtWrapper_methods[] = {
{"className", (PyCFunction)PythonQtWrapper_classname, METH_NOARGS,
"Return the classname of the object"
},
{"help", (PyCFunction)PythonQtWrapper_help, METH_NOARGS,
"Shows the help of available methods for this class"
},
{NULL, 0, 0, 0} /* Sentinel */
};
static PyObject *PythonQtWrapper_getattro(PyObject *obj,PyObject *name)
{
const char *attributeName;
PythonQtWrapper *wt = (PythonQtWrapper *)obj;
if ((attributeName = PyString_AsString(name)) == NULL) {
return NULL;
}
if (!wt->_obj && !wt->_wrappedPtr) {
QString error = QString("Trying to read attribute '") + attributeName + "' from a destroyed " + wt->_info->className() + " object";
PyErr_SetString(PyExc_ValueError, error.toLatin1().data());
return NULL;
}
// mlabDebugConst("Python","get " << attributeName);
// TODO: dynamic properties are missing
PythonQtMemberInfo member = wt->_info->member(attributeName);
switch (member._type) {
case PythonQtMemberInfo::Property:
if (wt->_obj) {
return PythonQtConv::QVariantToPyObject(member._property.read(wt->_obj));
}
break;
case PythonQtMemberInfo::Slot:
return PythonQtSlotFunction_New(member._slot, obj, NULL);
break;
case PythonQtMemberInfo::EnumValue:
return PyInt_FromLong(member._enumValue);
break;
case PythonQtMemberInfo::Invalid:
break;
}
// look for the interal methods (className(), help())
PyObject* internalMethod = Py_FindMethod( PythonQtWrapper_methods, obj, (char*)attributeName);
if (internalMethod) {
return internalMethod;
}
PyErr_Clear();
if (wt->_obj) {
// look for a child
QObjectList children = wt->_obj->children();
for (int i = 0; i < children.count(); i++) {
QObject *child = children.at(i);
if (child->objectName() == attributeName) {
return PythonQt::self()->priv()->wrapQObject(child);
}
}
}
if (qstrcmp(attributeName, "__dict__")==0) {
QStringList l = wt->_info->memberList(false);
PyObject* dict = PyDict_New();
foreach (QString name, l) {
//PyObject* o = PyObject_GetAttrString(obj, name.toLatin1().data());
PyDict_SetItemString(dict, name.toLatin1().data(), Py_None);
//Py_DECREF(o);
}
// Note: we do not put children into the dict, is would look confusing?!
return dict;
}
QString error = QString(wt->_info->className()) + " has no attribute named '" + QString(attributeName) + "'";
PyErr_SetString(PyExc_AttributeError, error.toLatin1().data());
return NULL;
}
static int PythonQtWrapper_setattro(PyObject *obj,PyObject *name,PyObject *value)
{
QString error;
char *attributeName;
PythonQtWrapper *wt = (PythonQtWrapper *)obj;
if ((attributeName = PyString_AsString(name)) == NULL)
return -1;
if (!wt->_obj) {
error = QString("Trying to set attribute '") + attributeName + "' on a destroyed " + wt->_info->className() + " object";
PyErr_SetString(PyExc_AttributeError, error.toLatin1().data());
return -1;
}
PythonQtMemberInfo member = wt->_info->member(attributeName);
if (member._type == PythonQtMemberInfo::Property) {
QMetaProperty prop = member._property;
if (prop.isWritable()) {
QVariant v;
if (prop.isEnumType()) {
// this will give us either a string or an int, everything else will probably be an error
v = PythonQtConv::PyObjToQVariant(value);
} else {
int t = prop.userType();
v = PythonQtConv::PyObjToQVariant(value, t);
}
bool success = false;
if (v.isValid()) {
success = prop.write(wt->_obj, v);
}
if (success) {
return 0;
} else {
error = QString("Property '") + attributeName + "' of type '" +
prop.typeName() + "' does not accept an object of type "
+ QString(value->ob_type->tp_name) + " (" + PythonQtConv::PyObjGetRepresentation(value) + ")";
}
} else {
error = QString("Property '") + attributeName + "' of " + wt->_info->className() + " object is not writable";
}
} else {
if (member._type == PythonQtMemberInfo::Slot) {
error = QString("Slot '") + attributeName + "' can not be overwritten on " + wt->_info->className() + " object";
} else if (member._type == PythonQtMemberInfo::EnumValue) {
error = QString("EnumValue '") + attributeName + "' can not be overwritten on " + wt->_info->className() + " object";
}
}
PyErr_SetString(PyExc_AttributeError, error.toLatin1().data());
return -1;
}
static PyObject * PythonQtWrapper_repr(PyObject * obj)
{
PythonQtWrapper* wt = (PythonQtWrapper*)obj;
if (wt->_wrappedPtr) {
if (wt->_obj) {
return PyString_FromFormat("%s (C++ Object 0x%x wrapped by %s 0x%x))", wt->_info->className(), (unsigned)wt->_wrappedPtr, wt->_obj->metaObject()->className(), (unsigned)wt->_obj);
} else {
return PyString_FromFormat("%s (C++ Object 0x%x unwrapped)", wt->_info->className(), (unsigned)wt->_wrappedPtr);
}
} else {
return PyString_FromFormat("%s (C++ Object 0x%x wrapped 0x%x))", wt->_info->className(), (unsigned)wt->_obj, (unsigned)wt->_wrappedPtr);
}
}
static int PythonQtWrapper_compare(PyObject * obj1, PyObject * obj2)
{
if (obj1->ob_type == &PythonQtWrapper_Type &&
obj2->ob_type == &PythonQtWrapper_Type) {
PythonQtWrapper* w1 = (PythonQtWrapper*)obj1;
PythonQtWrapper* w2 = (PythonQtWrapper*)obj2;
if (w1->_wrappedPtr != NULL) {
if (w1->_wrappedPtr == w1->_wrappedPtr) {
return 0;
} else {
return -1;
}
} else if (w1->_obj == w2->_obj) {
return 0;
} else {
return -1;
}
} else {
return -1;
}
}
static int PythonQtWrapper_nonzero(PyObject *obj)
{
PythonQtWrapper* wt = (PythonQtWrapper*)obj;
return (wt->_wrappedPtr == NULL && wt->_obj == NULL)?0:1;
}
// we override nb_nonzero, so that one can do 'if' expressions to test for a NULL ptr
static PyNumberMethods PythonQtWrapper_as_number = {
0, /* nb_add */
0, /* nb_subtract */
0, /* nb_multiply */
0, /* nb_divide */
0, /* nb_remainder */
0, /* nb_divmod */
0, /* nb_power */
0, /* nb_negative */
0, /* nb_positive */
0, /* nb_absolute */
PythonQtWrapper_nonzero, /* nb_nonzero */
0, /* nb_invert */
0, /* nb_lshift */
0, /* nb_rshift */
0, /* nb_and */
0, /* nb_xor */
0, /* 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 */
// 0 /* on Linux and MacOSX the number of fields is different */
};
PyTypeObject PythonQtWrapper_Type = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"PythonQt.PythonQtWrapper", /*tp_name*/
sizeof(PythonQtWrapper), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)PythonQtWrapper_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
PythonQtWrapper_compare, /*tp_compare*/
PythonQtWrapper_repr, /*tp_repr*/
&PythonQtWrapper_as_number, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
PythonQtWrapper_getattro, /*tp_getattro*/
PythonQtWrapper_setattro, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
"PythonQtWrapper object", /* 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 */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)PythonQtWrapper_init, /* tp_init */
0, /* tp_alloc */
PythonQtWrapper_new, /* tp_new */
0,0,0,0,0,0,0,0
};
//-------------------------------------------------------
