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/*
*
* Copyright (C) 2010 MeVis Medical Solutions AG 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 Medical Solutions AG, Universitaetsallee 29,
* 28359 Bremen, Germany or:
*
* http://www.mevis.de
*
*/
//----------------------------------------------------------------------------------
/*!
// \file PythonQtSignal.cpp
// \author Florian Link
// \author Last changed by $Author: florian $
// \date 2012-02
*/
//----------------------------------------------------------------------------------
#include "PythonQt.h"
#include "PythonQtSignal.h"
#include "PythonQtInstanceWrapper.h"
#include "PythonQtClassInfo.h"
#include "PythonQtMisc.h"
#include "PythonQtConversion.h"
#include "PythonQtSlot.h"
#include <iostream>
#include <exception>
#include <stdexcept>
#include <QByteArray>
//-----------------------------------------------------------------------------------
static PythonQtSignalFunctionObject *PythonQtSignal_free_list = nullptr;
PyObject *PythonQtSignalFunction_Call(PyObject *func, PyObject *args, PyObject *kw)
{
PythonQtSignalFunctionObject* f = (PythonQtSignalFunctionObject*)func;
return PythonQtMemberFunction_Call(f->m_ml, f->m_self, args, kw);
}
PyObject *PythonQtSignalFunction_tpNew(PyTypeObject *subtype, PyObject *args, PyObject *kwds)
{
Q_UNUSED(subtype)
Q_UNUSED(args)
Q_UNUSED(kwds)
return PythonQtSignalFunction_New(nullptr, nullptr, nullptr);
}
PyObject *
PythonQtSignalFunction_New(PythonQtSlotInfo *ml, PyObject *self, PyObject *module)
{
PythonQtSignalFunctionObject *op;
op = PythonQtSignal_free_list;
if (op != nullptr) {
PythonQtSignal_free_list = (PythonQtSignalFunctionObject *)(op->m_self);
PyObject_INIT(op, &PythonQtSignalFunction_Type);
}
else {
op = PyObject_GC_New(PythonQtSignalFunctionObject, &PythonQtSignalFunction_Type);
if (op == nullptr)
return nullptr;
}
op->_dynamicInfo = nullptr;
op->m_ml = ml;
Py_XINCREF(self);
op->m_self = self;
Py_XINCREF(module);
op->m_module = module;
PyObject_GC_Track(op);
return (PyObject *)op;
}
/* Methods (the standard built-in methods, that is) */
static void
meth_dealloc(PyObject *o)
{
PyObject_GC_UnTrack(o);
auto m = reinterpret_cast<PythonQtSignalFunctionObject*>(o);
if (m->_dynamicInfo) {
delete m->_dynamicInfo;
m->_dynamicInfo = nullptr;
}
Py_XDECREF(m->m_self);
Py_XDECREF(m->m_module);
m->m_self = (PyObject *)PythonQtSignal_free_list;
PythonQtSignal_free_list = m;
}
static PyObject *
meth_get__doc__(PythonQtSignalFunctionObject * /*m*/, void * /*closure*/)
{
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
meth_get__name__(PythonQtSignalFunctionObject *m, void * /*closure*/)
{
if (m->m_ml) {
return PyString_FromString(m->m_ml->signature());
} else {
return PyString_FromString("Signal");
}
}
static int
meth_traverse(PythonQtSignalFunctionObject *m, visitproc visit, void *arg)
{
int err;
if (m->m_self != nullptr) {
err = visit(m->m_self, arg);
if (err)
return err;
}
if (m->m_module != nullptr) {
err = visit(m->m_module, arg);
if (err)
return err;
}
return 0;
}
static PyObject *
meth_get__self__(PythonQtSignalFunctionObject *m, void * /*closure*/)
{
PyObject *self;
#ifndef PY3K
if (PyEval_GetRestricted()) {
PyErr_SetString(PyExc_RuntimeError,
"method.__self__ not accessible in restricted mode");
return NULL;
}
#endif
self = m->m_self;
if (self == nullptr)
self = Py_None;
Py_INCREF(self);
return self;
}
static PyGetSetDef meth_getsets [] = {
{const_cast<char*>("__doc__"), (getter)meth_get__doc__, nullptr, nullptr},
{const_cast<char*>("__name__"), (getter)meth_get__name__, nullptr, nullptr},
{const_cast<char*>("__self__"), (getter)meth_get__self__, nullptr, nullptr},
{nullptr, nullptr, nullptr,nullptr},
};
#if PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION < 6
#define PY_WRITE_RESTRICTED WRITE_RESTRICTED
#endif
#define OFF(x) offsetof(PythonQtSignalFunctionObject, x)
static PyMemberDef meth_members[] = {
{const_cast<char*>("__module__"), T_OBJECT, OFF(m_module), PY_WRITE_RESTRICTED},
{nullptr}
};
int PythonQtSignalFunction_init(PyObject *object, PyObject *args, PyObject *kw)
{
Q_UNUSED(kw)
PythonQtSignalFunctionObject* self = (PythonQtSignalFunctionObject*)object;
self->_dynamicInfo = new PythonQtDynamicSignalInfo();
QList<QByteArray> argList;
Py_ssize_t argc = PyTuple_Size(args);
for (Py_ssize_t i = 0; i < argc; i++) {
PyObject *argType = PyTuple_GET_ITEM(args, i);
if (!PythonQtConv::isStringType(argType->ob_type) && PySequence_Check(argType)) {
// it is not a string and a sequence, so it defines an overload
int count = PySequence_Size(argType);
if (count >= 0) {
QList<QByteArray> localArgList;
PyObject* value;
for (int i = 0; i < count; i++) {
value = PySequence_GetItem(argType, i);
QByteArray typeName = PythonQtConv::getCPPTypeName(value);
if (!typeName.isEmpty()) {
localArgList << typeName;
} else {
PyErr_Format(PyExc_TypeError, "Unknown Signal argument type: %s", value->ob_type->tp_name);
return -1;
}
Py_XDECREF(value);
}
self->_dynamicInfo->signatures << localArgList.join(",");
}
} else {
// normal signature (not given as overload sequences)
QByteArray typeName = PythonQtConv::getCPPTypeName(argType);
if (!typeName.isEmpty()) {
argList << typeName;
} else {
PyErr_Format(PyExc_TypeError, "Unknown Signal argument type: %s", argType->ob_type->tp_name);
return -1;
}
}
}
if (!argList.isEmpty()) {
self->_dynamicInfo->signatures << argList.join(",");
}
if (self->_dynamicInfo->signatures.isEmpty()) {
// add empty signature
self->_dynamicInfo->signatures << "";
}
return 1;
}
static PyObject *PythonQtSignalFunction_parameterTypes(PythonQtSignalFunctionObject* type)
{
return PythonQtMemberFunction_parameterTypes(type->m_ml);
}
static PyObject *PythonQtSignalFunction_parameterNames(PythonQtSignalFunctionObject* type)
{
return PythonQtMemberFunction_parameterNames(type->m_ml);
}
static PyObject *PythonQtSignalFunction_typeName(PythonQtSignalFunctionObject* type)
{
return PythonQtMemberFunction_typeName(type->m_ml);
}
static PyObject *PythonQtSignalFunction_connect(PythonQtSignalFunctionObject* type, PyObject *args)
{
if (PyObject_TypeCheck(type->m_self, &PythonQtInstanceWrapper_Type)) {
PythonQtInstanceWrapper* self = (PythonQtInstanceWrapper*) type->m_self;
if (self->_obj) {
Py_ssize_t argc = PyTuple_Size(args);
if (argc==1) {
// connect with Python callable
PyObject* callable = PyTuple_GET_ITEM(args, 0);
bool result = PythonQt::self()->addSignalHandler(self->_obj, QByteArray("2") + type->m_ml->signature(), callable);
return PythonQtConv::GetPyBool(result);
} else {
PyErr_SetString(PyExc_ValueError, "Called connect with wrong number of arguments");
}
}
}
return nullptr;
}
static PyObject *PythonQtSignalFunction_disconnect(PythonQtSignalFunctionObject* type, PyObject *args)
{
if (PyObject_TypeCheck(type->m_self, &PythonQtInstanceWrapper_Type)) {
PythonQtInstanceWrapper* self = (PythonQtInstanceWrapper*) type->m_self;
if (self->_obj) {
Py_ssize_t argc = PyTuple_Size(args);
QByteArray signal = QByteArray("2") + type->m_ml->signature();
if (argc==1) {
// disconnect with Python callable
PyObject* callable = PyTuple_GET_ITEM(args, 0);
bool result = PythonQt::self()->removeSignalHandler(self->_obj, signal, callable);
return PythonQtConv::GetPyBool(result);
} else if (argc==0) {
bool result = PythonQt::self()->removeSignalHandler(self->_obj, signal, nullptr);
result |= QObject::disconnect(self->_obj, signal, nullptr, nullptr);
return PythonQtConv::GetPyBool(result);
} else {
PyErr_SetString(PyExc_ValueError, "Called disconnect with wrong number of arguments");
}
}
}
return nullptr;
}
static PyObject *PythonQtSignalFunction_emit(PythonQtSignalFunctionObject* func, PyObject *args)
{
PythonQtSignalFunctionObject* f = (PythonQtSignalFunctionObject*)func;
return PythonQtMemberFunction_Call(f->m_ml, f->m_self, args, nullptr);
}
static PyMethodDef meth_methods[] = {
{"parameterTypes", reinterpret_cast<PyCFunction>(reinterpret_cast<void*>(PythonQtSignalFunction_parameterTypes)), METH_NOARGS,
"Returns a tuple of tuples of the C++ parameter types for all overloads of the signal"
},
{"parameterNames", reinterpret_cast<PyCFunction>(reinterpret_cast<void*>(PythonQtSignalFunction_parameterNames)), METH_NOARGS,
"Returns a tuple of tuples of the C++ parameter type names (if available), for all overloads of the signal"
},
{"typeName", reinterpret_cast<PyCFunction>(reinterpret_cast<void*>(PythonQtSignalFunction_typeName)), METH_NOARGS,
"Returns a tuple of the C++ return value types of each signal overload"
},
{"connect", reinterpret_cast<PyCFunction>(reinterpret_cast<void*>(PythonQtSignalFunction_connect)), METH_VARARGS,
"Connects the signal to the Python callable"
},
{"disconnect", reinterpret_cast<PyCFunction>(reinterpret_cast<void*>(PythonQtSignalFunction_disconnect)), METH_VARARGS,
"Disconnects the signal from the given Python callable or disconnects all if no argument is passed."
},
{"emit", reinterpret_cast<PyCFunction>(reinterpret_cast<void*>(PythonQtSignalFunction_emit)), METH_VARARGS,
"Emits the signal with given arguments"
},
{nullptr, nullptr, 0 , nullptr} /* Sentinel */
};
static PyObject *
meth_repr(PythonQtSignalFunctionObject *f)
{
if (!f->m_ml) {
// TODO
return PyString_FromString("Signal");
}
if (f->m_self->ob_type == &PythonQtClassWrapper_Type) {
PythonQtClassWrapper* self = (PythonQtClassWrapper*) f->m_self;
return PyString_FromFormat("<unbound qt signal %s of %s type>",
f->m_ml->slotName().constData(),
self->classInfo()->className().constData());
} else {
return PyString_FromFormat("<qt signal %s of %s instance at %p>",
f->m_ml->slotName().constData(),
f->m_self->ob_type->tp_name,
f->m_self);
}
}
static int
meth_compare(PythonQtSignalFunctionObject *a, PythonQtSignalFunctionObject *b)
{
if (a->m_self != b->m_self)
return (a->m_self < b->m_self) ? -1 : 1;
if (a->m_ml == b->m_ml)
return 0;
if (strcmp(a->m_ml->signature().constData(), b->m_ml->signature().constData()) < 0)
return -1;
else
return 1;
}
static long
meth_hash(PythonQtSignalFunctionObject *a)
{
long x,y;
if (a->m_self == nullptr)
x = 0;
else {
x = PyObject_Hash(a->m_self);
if (x == -1)
return -1;
}
y = _Py_HashPointer((void*)(a->m_ml));
if (y == -1)
return -1;
x ^= y;
if (x == -1)
x = -2;
return x;
}
// for python 3.x
static PyObject*
meth_richcompare(PythonQtSignalFunctionObject *a, PythonQtSignalFunctionObject *b, int op)
{
int x = meth_compare(a, b);
bool r = false;
if (op == Py_LT)
r = x < 0;
else if (op == Py_LE)
r = x < 1;
else if (op == Py_EQ)
r = x == 0;
else if (op == Py_NE)
r = x != 0;
else if (op == Py_GE)
r = x > -1;
else if (op == Py_GT)
r = x > 0;
if (r)
Py_RETURN_TRUE;
else
Py_RETURN_FALSE;
}
PyDoc_STRVAR(PythonQtSignalFunction_doc,
"Signal(*types) -> Signal\n");
PyTypeObject PythonQtSignalFunction_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
"QtCore.Signal",
sizeof(PythonQtSignalFunctionObject),
0,
(destructor)meth_dealloc, /* tp_dealloc */
0, /* tp_vectorcall_offset */
nullptr, /* tp_getattr */
nullptr, /* tp_setattr */
#ifdef PY3K
nullptr,
#else
(cmpfunc)meth_compare, /* tp_compare */
#endif
(reprfunc)meth_repr, /* tp_repr */
nullptr, /* tp_as_number */
nullptr, /* tp_as_sequence */
// TODO: implement tp_as_mapping to support overload resolution on the signal
nullptr, /* tp_as_mapping */
(hashfunc)meth_hash, /* tp_hash */
PythonQtSignalFunction_Call, /* tp_call */
nullptr, /* tp_str */
PyObject_GenericGetAttr, /* tp_getattro */
nullptr, /* tp_setattro */
nullptr, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
PythonQtSignalFunction_doc, /* tp_doc */
(traverseproc)meth_traverse, /* tp_traverse */
nullptr, /* tp_clear */
(richcmpfunc)meth_richcompare, /* tp_richcompare */
0, /* tp_weaklistoffset */
nullptr, /* tp_iter */
nullptr, /* tp_iternext */
meth_methods, /* tp_methods */
meth_members, /* tp_members */
meth_getsets, /* tp_getset */
nullptr, /* tp_base */
nullptr, /* tp_dict */
nullptr, /*tp_descr_get */
nullptr, /*tp_descr_set */
0, /*tp_dictoffset */
PythonQtSignalFunction_init, /*tp_init */
nullptr, /*tp_alloc */
PythonQtSignalFunction_tpNew, /*tp_new */
nullptr, /*tp_free */
nullptr, /*tp_is_gc */
nullptr, /*tp_bases */
nullptr, /*tp_mro */
nullptr, /*tp_cache */
nullptr, /*tp_subclasses */
nullptr, /*tp_weaklist */
nullptr, /*tp_del */
};
/* Clear out the free list */
void
PythonQtSignalFunction_Fini(void)
{
while (PythonQtSignal_free_list) {
PythonQtSignalFunctionObject *v = PythonQtSignal_free_list;
PythonQtSignal_free_list = (PythonQtSignalFunctionObject *)(v->m_self);
PyObject_GC_Del(v);
}
}
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