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/*
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*
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* Copyright (C) 2006 MeVis Research GmbH All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Contact information: MeVis Research GmbH, Universitaetsallee 29,
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* 28359 Bremen, Germany or:
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*
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* http://www.mevis.de
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*
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*/
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//----------------------------------------------------------------------------------
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/*!
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// \file PythonQtWrapper.cpp
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// \author Florian Link
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// \author Last changed by $Author: florian $
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// \date 2006-05
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*/
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//----------------------------------------------------------------------------------
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#include "PythonQtWrapper.h"
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#include <QObject>
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#include "PythonQt.h"
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#include "PythonQtSlot.h"
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#include "PythonQtClassInfo.h"
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#include "PythonQtConversion.h"
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static void PythonQtWrapper_deleteObject(PythonQtWrapper* self) {
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if (self->_wrappedPtr) {
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//mlabDebugConst("Python","c++ wrapper removed " << self->_wrappedPtr << " " << self->_obj->className() << " " << self->_info->wrappedClassName().latin1());
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PythonQt::priv()->removeWrapperPointer(self->_wrappedPtr);
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// we own our qobject, so we delete it now:
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delete self->_obj;
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self->_obj = NULL;
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if (self->_ownedByPythonQt) {
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int type = self->_info->metaTypeId();
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if (self->_useQMetaTypeDestroy && type>=0) {
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// use QMetaType to destroy the object
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QMetaType::destroy(type, self->_wrappedPtr);
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} else {
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PythonQtSlotInfo* slot = PythonQt::priv()->getDestructorSlot(self->_info->className());
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if (slot) {
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void* args[2];
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args[0] = NULL;
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args[1] = &self->_wrappedPtr;
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slot->decorator()->qt_metacall(QMetaObject::InvokeMetaMethod, slot->slotIndex(), args);
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self->_wrappedPtr = NULL;
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} else {
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if (type>=0) {
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// use QMetaType to destroy the object
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QMetaType::destroy(type, self->_wrappedPtr);
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} else {
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// TODO: warn about not being able to destroy the object?
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}
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}
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}
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}
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} else {
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//mlabDebugConst("Python","qobject wrapper removed " << self->_obj->className() << " " << self->_info->wrappedClassName().latin1());
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if (self->_objPointerCopy) {
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PythonQt::priv()->removeWrapperPointer(self->_objPointerCopy);
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}
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if (self->_obj) {
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if (self->_ownedByPythonQt) {
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if (!self->_obj->parent()) {
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delete self->_obj;
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}
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} else {
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if (self->_obj->parent()==NULL) {
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// tell someone who is interested that the qobject is no longer wrapped, if it has no parent
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PythonQt::qObjectNoLongerWrappedCB(self->_obj);
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}
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}
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}
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}
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self->_obj = NULL;
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}
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static void PythonQtWrapper_dealloc(PythonQtWrapper* self)
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{
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PythonQtWrapper_deleteObject(self);
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self->_obj.~QPointer<QObject>();
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self->ob_type->tp_free((PyObject*)self);
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}
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static PyObject* PythonQtWrapper_new(PyTypeObject *type, PyObject * /*args*/, PyObject * /*kwds*/)
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{
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PythonQtWrapper *self;
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self = (PythonQtWrapper *)type->tp_alloc(type, 0);
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if (self != NULL) {
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self->_info = NULL;
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new (&self->_obj) QPointer<QObject>();
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self->_wrappedPtr = NULL;
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self->_ownedByPythonQt = false;
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self->_useQMetaTypeDestroy = false;
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}
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return (PyObject *)self;
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}
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static int PythonQtWrapper_init(PythonQtWrapper * /*self*/, PyObject * /*args*/, PyObject * /*kwds*/)
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{
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return 0;
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}
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static PyObject *PythonQtWrapper_classname(PythonQtWrapper* type)
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{
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return PyString_FromString(type->_info->className());
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}
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static PyObject *PythonQtWrapper_help(PythonQtWrapper* type)
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{
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return PythonQt::self()->helpCalled(type->_info);
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}
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static PyObject *PythonQtWrapper_delete(PythonQtWrapper * self)
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{
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PythonQtWrapper_deleteObject(self);
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Py_INCREF(Py_None);
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return Py_None;
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}
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static PyMethodDef PythonQtWrapper_methods[] = {
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{"className", (PyCFunction)PythonQtWrapper_classname, METH_NOARGS,
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"Return the classname of the object"
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},
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{"help", (PyCFunction)PythonQtWrapper_help, METH_NOARGS,
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"Shows the help of available methods for this class"
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},
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{"delete", (PyCFunction)PythonQtWrapper_delete, METH_NOARGS,
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"Deletes the C++ object (at your own risk, my friend!)"
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},
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{NULL, NULL, 0, NULL} /* Sentinel */
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};
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static PyObject *PythonQtWrapper_getattro(PyObject *obj,PyObject *name)
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{
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const char *attributeName;
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PythonQtWrapper *wt = (PythonQtWrapper *)obj;
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if ((attributeName = PyString_AsString(name)) == NULL) {
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return NULL;
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}
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if (!wt->_obj && !wt->_wrappedPtr) {
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QString error = QString("Trying to read attribute '") + attributeName + "' from a destroyed " + wt->_info->className() + " object";
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PyErr_SetString(PyExc_ValueError, error.toLatin1().data());
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return NULL;
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}
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// mlabDebugConst("Python","get " << attributeName);
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// TODO: dynamic properties are missing
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PythonQtMemberInfo member = wt->_info->member(attributeName);
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switch (member._type) {
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case PythonQtMemberInfo::Property:
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if (wt->_obj) {
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return PythonQtConv::QVariantToPyObject(member._property.read(wt->_obj));
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}
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break;
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case PythonQtMemberInfo::Slot:
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return PythonQtSlotFunction_New(member._slot, obj, NULL);
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break;
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case PythonQtMemberInfo::EnumValue:
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return PyInt_FromLong(member._enumValue);
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break;
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default:
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// is an invalid type, go on
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break;
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}
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// look for the interal methods (className(), help())
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PyObject* internalMethod = Py_FindMethod( PythonQtWrapper_methods, obj, (char*)attributeName);
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if (internalMethod) {
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return internalMethod;
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}
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PyErr_Clear();
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if (wt->_obj) {
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// look for a child
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QObjectList children = wt->_obj->children();
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for (int i = 0; i < children.count(); i++) {
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QObject *child = children.at(i);
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if (child->objectName() == attributeName) {
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return PythonQt::self()->priv()->wrapQObject(child);
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}
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}
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}
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if (qstrcmp(attributeName, "__dict__")==0) {
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QStringList l = wt->_info->memberList(false);
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PyObject* dict = PyDict_New();
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foreach (QString name, l) {
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//PyObject* o = PyObject_GetAttrString(obj, name.toLatin1().data());
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PyDict_SetItemString(dict, name.toLatin1().data(), Py_None);
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//Py_DECREF(o);
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}
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// Note: we do not put children into the dict, is would look confusing?!
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return dict;
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}
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|
QString error = QString(wt->_info->className()) + " has no attribute named '" + QString(attributeName) + "'";
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PyErr_SetString(PyExc_AttributeError, error.toLatin1().data());
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return NULL;
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}
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static int PythonQtWrapper_setattro(PyObject *obj,PyObject *name,PyObject *value)
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{
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QString error;
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char *attributeName;
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PythonQtWrapper *wt = (PythonQtWrapper *)obj;
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if ((attributeName = PyString_AsString(name)) == NULL)
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return -1;
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if (!wt->_obj) {
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error = QString("Trying to set attribute '") + attributeName + "' on a destroyed " + wt->_info->className() + " object";
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PyErr_SetString(PyExc_AttributeError, error.toLatin1().data());
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return -1;
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}
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PythonQtMemberInfo member = wt->_info->member(attributeName);
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if (member._type == PythonQtMemberInfo::Property) {
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QMetaProperty prop = member._property;
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if (prop.isWritable()) {
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QVariant v;
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if (prop.isEnumType()) {
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// this will give us either a string or an int, everything else will probably be an error
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v = PythonQtConv::PyObjToQVariant(value);
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} else {
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int t = prop.userType();
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v = PythonQtConv::PyObjToQVariant(value, t);
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}
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bool success = false;
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if (v.isValid()) {
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success = prop.write(wt->_obj, v);
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}
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if (success) {
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return 0;
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} else {
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error = QString("Property '") + attributeName + "' of type '" +
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prop.typeName() + "' does not accept an object of type "
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+ QString(value->ob_type->tp_name) + " (" + PythonQtConv::PyObjGetRepresentation(value) + ")";
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}
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} else {
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error = QString("Property '") + attributeName + "' of " + wt->_info->className() + " object is not writable";
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}
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} else {
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if (member._type == PythonQtMemberInfo::Slot) {
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error = QString("Slot '") + attributeName + "' can not be overwritten on " + wt->_info->className() + " object";
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} else if (member._type == PythonQtMemberInfo::EnumValue) {
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error = QString("EnumValue '") + attributeName + "' can not be overwritten on " + wt->_info->className() + " object";
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}
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}
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PyErr_SetString(PyExc_AttributeError, error.toLatin1().data());
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return -1;
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}
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static PyObject * PythonQtWrapper_str(PyObject * obj)
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{
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PythonQtWrapper* wt = (PythonQtWrapper*)obj;
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QObject *qobj = wt->_obj;
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if (wt->_wrappedPtr) {
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QString str = PythonQtConv::CPPObjectToString(wt->_info->metaTypeId(), wt->_wrappedPtr);
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if (!str.isEmpty()) {
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return PyString_FromFormat("%s", str.toLatin1().constData());
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} else
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if (wt->_obj) {
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return PyString_FromFormat("%s (C++ Object %p wrapped by %s %p))", wt->_info->className(), wt->_wrappedPtr, wt->_obj->metaObject()->className(), qobj);
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} else {
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return PyString_FromFormat("%s (C++ Object %p)", wt->_info->className(), wt->_wrappedPtr);
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}
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} else {
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return PyString_FromFormat("%s (QObject %p)", wt->_info->className(), qobj);
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}
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}
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static PyObject * PythonQtWrapper_repr(PyObject * obj)
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{
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PythonQtWrapper* wt = (PythonQtWrapper*)obj;
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QObject *qobj = wt->_obj;
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if (wt->_wrappedPtr) {
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QString str = PythonQtConv::CPPObjectToString(wt->_info->metaTypeId(), wt->_wrappedPtr);
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if (!str.isEmpty()) {
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return PyString_FromFormat("%s(%s, %p)", QMetaType::typeName(wt->_info->metaTypeId()), str.toLatin1().constData(), wt->_wrappedPtr);
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} else
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if (wt->_obj) {
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return PyString_FromFormat("%s (C++ Object %p wrapped by %s %p))", wt->_info->className(), wt->_wrappedPtr, wt->_obj->metaObject()->className(), qobj);
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} else {
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return PyString_FromFormat("%s (C++ Object %p)", wt->_info->className(), wt->_wrappedPtr);
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}
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|
} else {
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|
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return PyString_FromFormat("%s (QObject %p)", wt->_info->className(), qobj);
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}
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}
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static int PythonQtWrapper_compare(PyObject * obj1, PyObject * obj2)
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{
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|
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if (obj1->ob_type == &PythonQtWrapper_Type &&
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obj2->ob_type == &PythonQtWrapper_Type) {
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|
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PythonQtWrapper* w1 = (PythonQtWrapper*)obj1;
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PythonQtWrapper* w2 = (PythonQtWrapper*)obj2;
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// check pointers directly first:
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|
|
if (w1->_wrappedPtr != NULL) {
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|
|
if (w1->_wrappedPtr == w2->_wrappedPtr) {
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|
return 0;
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|
|
}
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|
} else if (w1->_obj == w2->_obj) {
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|
return 0;
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|
|
}
|
|
|
const char* class1 = w1->_info->className();
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|
|
const char* class2 = w2->_info->className();
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|
|
if (strcmp(class1, class2) == 0) {
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|
// same class names, so we can try the operator_equal
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|
|
PythonQtMemberInfo info = w1->_info->member("operator_equal");
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|
|
if (info._type == PythonQtMemberInfo::Slot) {
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|
bool result = false;
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|
|
void* obj1 = w1->_wrappedPtr;
|
|
|
if (!obj1) {
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|
|
obj1 = w1->_obj;
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|
|
}
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|
|
if (!obj1) { return -1; }
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|
|
void* obj2 = w2->_wrappedPtr;
|
|
|
if (!obj2) {
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|
|
obj2 = w2->_obj;
|
|
|
}
|
|
|
if (!obj2) { return -1; }
|
|
|
if (info._slot->isInstanceDecorator()) {
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|
|
// call on decorator QObject
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|
|
void* args[3];
|
|
|
args[0] = &result;
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|
|
args[1] = &obj1; // this is a pointer, so it needs a pointer to a pointer
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|
|
args[2] = obj2; // this is a reference, so it needs the direct pointer
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|
|
info._slot->decorator()->qt_metacall(QMetaObject::InvokeMetaMethod, info._slot->slotIndex(), args);
|
|
|
return result?0:-1;
|
|
|
} else {
|
|
|
// call directly on QObject
|
|
|
if (w1->_obj && w2->_obj) {
|
|
|
void* args[2];
|
|
|
args[0] = &result;
|
|
|
args[2] = obj2; // this is a reference, so it needs the direct pointer
|
|
|
w1->_obj->qt_metacall(QMetaObject::InvokeMetaMethod, info._slot->slotIndex(), args);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
static int PythonQtWrapper_nonzero(PyObject *obj)
|
|
|
{
|
|
|
PythonQtWrapper* wt = (PythonQtWrapper*)obj;
|
|
|
return (wt->_wrappedPtr == NULL && wt->_obj == NULL)?0:1;
|
|
|
}
|
|
|
|
|
|
|
|
|
static long PythonQtWrapper_hash(PythonQtWrapper *obj)
|
|
|
{
|
|
|
if (obj->_wrappedPtr != NULL) {
|
|
|
return reinterpret_cast<long>(obj->_wrappedPtr);
|
|
|
} else {
|
|
|
QObject* qobj = obj->_obj; // get pointer from QPointer wrapper
|
|
|
return reinterpret_cast<long>(qobj);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 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 */
|
|
|
};
|
|
|
|
|
|
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*/
|
|
|
(hashfunc)PythonQtWrapper_hash, /*tp_hash */
|
|
|
0, /*tp_call*/
|
|
|
PythonQtWrapper_str, /*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 */
|
|
|
};
|
|
|
|
|
|
//-------------------------------------------------------
|
|
|
|
|
|
|
