GIT_REPOSITORIES/LPP/PythonQt Commit - r56:607d4eb3cb2d

support enum values on signals as well, all tests should succeed now...

florianlink -

r56:607d4eb3cb2d

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src/PythonQt.cpp +8 0

              /*
              *
              *  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    PythonQt.cpp
              // \author  Florian Link
              // \author  Last changed by $Author: florian $
              // \date    2006-05
              */
              //----------------------------------------------------------------------------------
              #include "PythonQt.h"
              #include "PythonQtImporter.h"
              #include "PythonQtClassInfo.h"
              #include "PythonQtMethodInfo.h"
              #include "PythonQtSignalReceiver.h"
              #include "PythonQtConversion.h"
              #include "PythonQtStdOut.h"
              #include "PythonQtCppWrapperFactory.h"
              #include "PythonQtVariants.h"
              #include "PythonQtStdDecorators.h"
              #include "PythonQtQFileImporter.h"
              #include <pydebug.h>
              #include <vector>
              PythonQt* PythonQt::_self = NULL;
              int       PythonQt::_uniqueModuleCount = 0;
              void PythonQt::init(int flags)
              {
                if (!_self) {
                  _self = new PythonQt(flags);
                }
                PythonQtMethodInfo::addParameterTypeAlias("QObjectList", "QList<QObject*>");
                qRegisterMetaType<QList<QObject*> >("QList<void*>");
                PythonQtRegisterToolClassesTemplateConverter(int);
                PythonQtRegisterToolClassesTemplateConverter(float);
                PythonQtRegisterToolClassesTemplateConverter(double);
                // TODO: which other POD types should be available for QList etc.
                PythonQt::self()->addDecorators(new PythonQtStdDecorators());
                PythonQt::self()->registerCPPClass("Qt", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_Qt>);
                PythonQt::self()->registerCPPClass("QBitArray", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QBitArray>);
                PythonQt::self()->registerCPPClass("QDate", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QDate>);
                PythonQt::self()->registerCPPClass("QTime", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QTime>);
                PythonQt::self()->registerCPPClass("QDateTime", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QDateTime>);
                PythonQt::self()->registerCPPClass("QUrl", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QUrl>);
                PythonQt::self()->registerCPPClass("QLocale", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QLocale>);
                PythonQt::self()->registerCPPClass("QRect", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QRect>);
                PythonQt::self()->registerCPPClass("QRectF", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QRectF>);
                PythonQt::self()->registerCPPClass("QSize", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QSize>);
                PythonQt::self()->registerCPPClass("QSizeF", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QSizeF>);
                PythonQt::self()->registerCPPClass("QLine", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QLine>);
                PythonQt::self()->registerCPPClass("QLineF", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QLineF>);
                PythonQt::self()->registerCPPClass("QPoint", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QPoint>);
                PythonQt::self()->registerCPPClass("QPointF", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QPointF>);
                PythonQt::self()->registerCPPClass("QRegExp", "", "QtCore", PythonQtCreateObject<PythonQtWrapper_QRegExp>);
                PythonQtRegisterToolClassesTemplateConverter(QDate);
                PythonQtRegisterToolClassesTemplateConverter(QTime);
                PythonQtRegisterToolClassesTemplateConverter(QDateTime);
                PythonQtRegisterToolClassesTemplateConverter(QUrl);
                PythonQtRegisterToolClassesTemplateConverter(QLocale);
                PythonQtRegisterToolClassesTemplateConverter(QRect);
                PythonQtRegisterToolClassesTemplateConverter(QRectF);
                PythonQtRegisterToolClassesTemplateConverter(QSize);
                PythonQtRegisterToolClassesTemplateConverter(QSizeF);
                PythonQtRegisterToolClassesTemplateConverter(QLine);
                PythonQtRegisterToolClassesTemplateConverter(QLineF);
                PythonQtRegisterToolClassesTemplateConverter(QPoint);
                PythonQtRegisterToolClassesTemplateConverter(QPointF);
                PythonQtRegisterToolClassesTemplateConverter(QRegExp);
                PythonQt::self()->registerCPPClass("QFont", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QFont>);
                PythonQt::self()->registerCPPClass("QPixmap", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QPixmap>);
                PythonQt::self()->registerCPPClass("QBrush", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QBrush>);
                PythonQt::self()->registerCPPClass("QColor", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QColor>);
                PythonQt::self()->registerCPPClass("QPalette", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QPalette>);
                PythonQt::self()->registerCPPClass("QIcon", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QIcon>);
                PythonQt::self()->registerCPPClass("QImage", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QImage>);
                PythonQt::self()->registerCPPClass("QPolygon", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QPolygon>);
                PythonQt::self()->registerCPPClass("QRegion", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QRegion>);
                PythonQt::self()->registerCPPClass("QBitmap", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QBitmap>);
                PythonQt::self()->registerCPPClass("QCursor", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QCursor>);
                PythonQt::self()->registerCPPClass("QSizePolicy", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QSizePolicy>);
                PythonQt::self()->registerCPPClass("QKeySequence", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QKeySequence>);
                PythonQt::self()->registerCPPClass("QPen", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QPen>);
                PythonQt::self()->registerCPPClass("QTextLength", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QTextLength>);
                PythonQt::self()->registerCPPClass("QTextFormat", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QTextFormat>);
                PythonQt::self()->registerCPPClass("QMatrix", "", "QtGui", PythonQtCreateObject<PythonQtWrapper_QMatrix>);
                PythonQtRegisterToolClassesTemplateConverter(QFont);
                PythonQtRegisterToolClassesTemplateConverter(QPixmap);
                PythonQtRegisterToolClassesTemplateConverter(QBrush);
                PythonQtRegisterToolClassesTemplateConverter(QColor);
                PythonQtRegisterToolClassesTemplateConverter(QPalette);
                PythonQtRegisterToolClassesTemplateConverter(QIcon);
                PythonQtRegisterToolClassesTemplateConverter(QImage);
                PythonQtRegisterToolClassesTemplateConverter(QPolygon);
                PythonQtRegisterToolClassesTemplateConverter(QRegion);
                PythonQtRegisterToolClassesTemplateConverter(QBitmap);
                PythonQtRegisterToolClassesTemplateConverter(QCursor);
                PythonQtRegisterToolClassesTemplateConverter(QSizePolicy);
                PythonQtRegisterToolClassesTemplateConverter(QKeySequence);
                PythonQtRegisterToolClassesTemplateConverter(QPen);
                PythonQtRegisterToolClassesTemplateConverter(QTextLength);
                PythonQtRegisterToolClassesTemplateConverter(QTextFormat);
                PythonQtRegisterToolClassesTemplateConverter(QMatrix);
              }
              void PythonQt::cleanup()
              {
                if (_self) {
                  delete _self;
                  _self = NULL;
                }
              }
              PythonQt::PythonQt(int flags)
              {
                _p = new PythonQtPrivate;
                _p->_initFlags = flags;
                _p->_PythonQtObjectPtr_metaId = qRegisterMetaType<PythonQtObjectPtr>("PythonQtObjectPtr");
                Py_SetProgramName("PythonQt");
                if (flags & IgnoreSiteModule) {
                  // this prevents the automatic importing of Python site files
                  Py_NoSiteFlag = 1;
                }
                Py_Initialize();
                // add our own python object types for qt object slots
                if (PyType_Ready(&PythonQtSlotFunction_Type) < 0) {
                  std::cerr << "could not initialize PythonQtSlotFunction_Type" << ", in " << __FILE__ << ":" << __LINE__ << std::endl;
                }
                Py_INCREF(&PythonQtSlotFunction_Type);
                // according to Python docs, set the type late here, since it can not safely be stored in the struct when declaring it
                PythonQtClassWrapper_Type.tp_base = &PyType_Type;
                // add our own python object types for classes
                if (PyType_Ready(&PythonQtClassWrapper_Type) < 0) {
                  std::cerr << "could not initialize PythonQtClassWrapper_Type" << ", in " << __FILE__ << ":" << __LINE__ << std::endl;
                }
                Py_INCREF(&PythonQtClassWrapper_Type);
                // add our own python object types for CPP instances
                if (PyType_Ready(&PythonQtInstanceWrapper_Type) < 0) {
                  PythonQt::handleError();
                  std::cerr << "could not initialize PythonQtInstanceWrapper_Type" << ", in " << __FILE__ << ":" << __LINE__ << std::endl;
                }
                Py_INCREF(&PythonQtInstanceWrapper_Type);
                // add our own python object types for redirection of stdout
                if (PyType_Ready(&PythonQtStdOutRedirectType) < 0) {
                  std::cerr << "could not initialize PythonQtStdOutRedirectType" << ", in " << __FILE__ << ":" << __LINE__ << std::endl;
                }
                Py_INCREF(&PythonQtStdOutRedirectType);
                initPythonQtModule(flags & RedirectStdOut);
              }
              PythonQt::~PythonQt() {
                delete _p;
                _p = NULL;
              }
              PythonQtPrivate::~PythonQtPrivate() {
                delete _defaultImporter;
                _defaultImporter = NULL;
                {
                  QHashIterator<QByteArray, PythonQtClassInfo *> i(_knownClassInfos);
                  while (i.hasNext()) {
                    delete i.next().value();
                  }
                }
                PythonQtConv::global_valueStorage.clear();
                PythonQtConv::global_ptrStorage.clear();
                PythonQtConv::global_variantStorage.clear();
                PythonQtMethodInfo::cleanupCachedMethodInfos();
              }
              PythonQtImportFileInterface* PythonQt::importInterface()
              {
                return _self->_p->_importInterface?_self->_p->_importInterface:_self->_p->_defaultImporter;
              }
              void PythonQt::qObjectNoLongerWrappedCB(QObject* o)
              {
                if (_self->_p->_noLongerWrappedCB) {
                  (*_self->_p->_noLongerWrappedCB)(o);
                };
              }
              void PythonQt::registerClass(const QMetaObject* metaobject, const char* package, PythonQtQObjectCreatorFunctionCB* wrapperCreator, PythonQtShellSetInstanceWrapperCB* shell)
              {
                _p->registerClass(metaobject, package, wrapperCreator, shell);
              }
              void PythonQtPrivate::registerClass(const QMetaObject* metaobject, const char* package, PythonQtQObjectCreatorFunctionCB* wrapperCreator, PythonQtShellSetInstanceWrapperCB* shell)
              {
                // we register all classes in the hierarchy
                const QMetaObject* m = metaobject;
                bool first = true;
                while (m) {
                  PythonQtClassInfo* info = lookupClassInfoAndCreateIfNotPresent(m->className());
                  if (!info->pythonQtClassWrapper()) {
                    info->setupQObject(m);
                    createPythonQtClassWrapper(info, package);
                    if (m->superClass()) {
                      PythonQtClassInfo* parentInfo = lookupClassInfoAndCreateIfNotPresent(m->superClass()->className());
                      info->addParentClass(PythonQtClassInfo::ParentClassInfo(parentInfo));
                    }
                  }
                  if (first) {
                    first = false;
                    if (wrapperCreator) {
                      info->setDecoratorProvider(wrapperCreator);
                    }
                    if (shell) {
                      info->setShellSetInstanceWrapperCB(shell);
                    }
                  }
                  m = m->superClass();
                }
              }
              void PythonQtPrivate::createPythonQtClassWrapper(PythonQtClassInfo* info, const char* package)
              {
                PyObject* pack = packageByName(package);
                PyObject* pyobj = (PyObject*)createNewPythonQtClassWrapper(info, package);
                PyModule_AddObject(pack, info->className(), pyobj);
                if (package && strncmp(package,"Qt",2)==0) {
                  // since PyModule_AddObject steals the reference, we need a incref once more...
                  Py_INCREF(pyobj);
                  // put all qt objects into Qt as well
                  PyModule_AddObject(packageByName("Qt"), info->className(), pyobj);
                }
                info->setPythonQtClassWrapper(pyobj);
              }
              PyObject* PythonQtPrivate::wrapQObject(QObject* obj)
              {
                if (!obj) {
                  Py_INCREF(Py_None);
                  return Py_None;
                }
                PythonQtInstanceWrapper* wrap = findWrapperAndRemoveUnused(obj);
                if (!wrap) {
                  // smuggling it in...
                  PythonQtClassInfo* classInfo = _knownClassInfos.value(obj->metaObject()->className());
                  if (!classInfo || classInfo->pythonQtClassWrapper()==NULL) {
                    registerClass(obj->metaObject());
                    classInfo = _knownClassInfos.value(obj->metaObject()->className());
                  }
                  wrap = createNewPythonQtInstanceWrapper(obj, classInfo);
                  //    mlabDebugConst("MLABPython","new qobject wrapper added " << " " << wrap->_obj->className() << " " << wrap->classInfo()->wrappedClassName().latin1());
                } else {
                  Py_INCREF(wrap);
                  //    mlabDebugConst("MLABPython","qobject wrapper reused " << wrap->_obj->className() << " " << wrap->classInfo()->wrappedClassName().latin1());
                }
                return (PyObject*)wrap;
              }
              PyObject* PythonQtPrivate::wrapPtr(void* ptr, const QByteArray& name)
              {
                if (!ptr) {
                  Py_INCREF(Py_None);
                  return Py_None;
                }
                PythonQtInstanceWrapper* wrap = findWrapperAndRemoveUnused(ptr);
                if (!wrap) {
                  PythonQtClassInfo* info = _knownClassInfos.value(name);
                  if (!info) {
                    // maybe it is a PyObject, which we can return directly
                    if (name == "PyObject") {
                      PyObject* p = (PyObject*)ptr;
                      Py_INCREF(p);
                      return p;
                    }
                    // we do not know the metaobject yet, but we might know it by it's name:
                    if (_knownQObjectClassNames.find(name)!=_knownQObjectClassNames.end()) {
                      // yes, we know it, so we can convert to QObject
                      QObject* qptr = (QObject*)ptr;
                      registerClass(qptr->metaObject());
                      info = _knownClassInfos.value(qptr->metaObject()->className());
                    }
                  }
                  if (info && info->isQObject()) {
                    QObject* qptr = (QObject*)ptr;
                    // if the object is a derived object, we want to switch the class info to the one of the derived class:
                    if (name!=(qptr->metaObject()->className())) {
                      registerClass(qptr->metaObject());
                      info = _knownClassInfos.value(qptr->metaObject()->className());
                    }
                    wrap = createNewPythonQtInstanceWrapper(qptr, info);
                    //    mlabDebugConst("MLABPython","new qobject wrapper added " << " " << wrap->_obj->className() << " " << wrap->classInfo()->wrappedClassName().latin1());
                    return (PyObject*)wrap;
                  }
                  // not a known QObject, so try our wrapper factory:
                  QObject* wrapper = NULL;
                  for (int i=0; i<_cppWrapperFactories.size(); i++) {
                    wrapper = _cppWrapperFactories.at(i)->create(name, ptr);
                    if (wrapper) {
                      break;
                    }
                  }
                  if (info) {
                    // try to downcast in the class hierarchy, which will modify info and ptr if it is successfull
                    ptr  = info->castDownIfPossible(ptr, &info);
                  }
                  if (!info || info->pythonQtClassWrapper()==NULL) {
                    // still unknown, register as CPP class
                    registerCPPClass(name.constData());
                    info = _knownClassInfos.value(name);
                  }
                  if (wrapper && (info->metaObject() != wrapper->metaObject())) {
                    // if we a have a QObject wrapper and the metaobjects do not match, set the metaobject again!
                    info->setMetaObject(wrapper->metaObject());
                  }
                  wrap = createNewPythonQtInstanceWrapper(wrapper, info, ptr);
                  //          mlabDebugConst("MLABPython","new c++ wrapper added " << wrap->_wrappedPtr << " " << wrap->_obj->className() << " " << wrap->classInfo()->wrappedClassName().latin1());
                } else {
                  Py_INCREF(wrap);
                  //mlabDebugConst("MLABPython","c++ wrapper reused " << wrap->_wrappedPtr << " " << wrap->_obj->className() << " " << wrap->classInfo()->wrappedClassName().latin1());
                }
                return (PyObject*)wrap;
              }
              PyObject* PythonQtPrivate::dummyTuple() {
                static PyObject* dummyTuple = NULL;
                if (dummyTuple==NULL) {
                  dummyTuple = PyTuple_New(1);
                  PyTuple_SET_ITEM(dummyTuple, 0 , PyString_FromString("dummy"));
                }
                return dummyTuple;
              }
              PythonQtInstanceWrapper* PythonQtPrivate::createNewPythonQtInstanceWrapper(QObject* obj, PythonQtClassInfo* info, void* wrappedPtr) {
                // call the associated class type to create a new instance...
                PythonQtInstanceWrapper* result = (PythonQtInstanceWrapper*)PyObject_Call(info->pythonQtClassWrapper(), dummyTuple(), NULL);
                result->setQObject(obj);
                result->_wrappedPtr = wrappedPtr;
                result->_ownedByPythonQt = false;
                result->_useQMetaTypeDestroy = false;
                if (wrappedPtr) {
                  _wrappedObjects.insert(wrappedPtr, result);
                } else {
                  _wrappedObjects.insert(obj, result);
                  if (obj->parent()== NULL && _wrappedCB) {
                    // tell someone who is interested that the qobject is wrapped the first time, if it has no parent
                    (*_wrappedCB)(obj);
                  }
                }
                return result;
              }
              PythonQtClassWrapper* PythonQtPrivate::createNewPythonQtClassWrapper(PythonQtClassInfo* info, const char* package) {
                PythonQtClassWrapper* result;
                PyObject* className = PyString_FromString(info->className());
                PyObject* baseClasses = PyTuple_New(1);
                PyTuple_SET_ITEM(baseClasses, 0, (PyObject*)&PythonQtInstanceWrapper_Type);
                PyObject* typeDict = PyDict_New();
                QByteArray moduleName("PythonQt");
                if (package && strcmp(package, "")!=0) {
                  moduleName += ".";
                  moduleName += package;
                }
                PyDict_SetItemString(typeDict, "__module__", PyString_FromString(moduleName.constData()));
                PyObject* args  = Py_BuildValue("OOO", className, baseClasses, typeDict);
                // set the class info so that PythonQtClassWrapper_new can read it
                _currentClassInfoForClassWrapperCreation = info;
                // create the new type object by calling the type
                result = (PythonQtClassWrapper *)PyObject_Call((PyObject *)&PythonQtClassWrapper_Type, args, NULL);
                Py_DECREF(baseClasses);
                Py_DECREF(typeDict);
                Py_DECREF(args);
                Py_DECREF(className);
                return result;
              }
+             PyObject*  PythonQtPrivate::createEnumValueInstance(PyObject* enumType, unsigned int enumValue)
+             {
+               PyObject* args = Py_BuildValue("(i)", enumValue);
+               PyObject* result = PyObject_Call(enumType, args, NULL);
+               Py_DECREF(args);
+               return result;
+             }
              PyObject* PythonQtPrivate::createNewPythonQtEnumWrapper(const char* enumName, PyObject* parentObject) {
                PyObject* result;
                PyObject* className = PyString_FromString(enumName);
                PyObject* baseClasses = PyTuple_New(1);
                PyTuple_SET_ITEM(baseClasses, 0, (PyObject*)&PyInt_Type);
                PyObject* module = PyObject_GetAttrString(parentObject, "__module__");
                PyObject* typeDict = PyDict_New();
                PyDict_SetItemString(typeDict, "__module__", module);
                PyObject* args  = Py_BuildValue("OOO", className, baseClasses, typeDict);
                // create the new int derived type object by calling the core type
                result = PyObject_Call((PyObject *)&PyType_Type, args, NULL);
                Py_DECREF(baseClasses);
                Py_DECREF(typeDict);
                Py_DECREF(args);
                Py_DECREF(className);
                return result;
              }
              PythonQtSignalReceiver* PythonQt::getSignalReceiver(QObject* obj)
              {
                PythonQtSignalReceiver* r = _p->_signalReceivers[obj];
                if (!r) {
                  r = new PythonQtSignalReceiver(obj);
                  _p->_signalReceivers.insert(obj, r);
                }
                return r;
              }
              bool PythonQt::addSignalHandler(QObject* obj, const char* signal, PyObject* module, const QString& objectname)
              {
                bool flag = false;
                PythonQtObjectPtr callable = lookupCallable(module, objectname);
                if (callable) {
                  PythonQtSignalReceiver* r = getSignalReceiver(obj);
                  flag = r->addSignalHandler(signal, callable);
                  if (!flag) {
                    // signal not found
                  }
                } else {
                  // callable not found
                }
                return flag;
              }
              bool PythonQt::addSignalHandler(QObject* obj, const char* signal, PyObject* receiver)
              {
                bool flag = false;
                PythonQtSignalReceiver* r = getSignalReceiver(obj);
                if (r) {
                  flag = r->addSignalHandler(signal, receiver);
                }
                return flag;
              }
              bool PythonQt::removeSignalHandler(QObject* obj, const char* signal, PyObject* module, const QString& objectname)
              {
                bool flag = false;
                PythonQtObjectPtr callable = lookupCallable(module, objectname);
                if (callable) {
                  PythonQtSignalReceiver* r = _p->_signalReceivers[obj];
                  if (r) {
                    flag = r->removeSignalHandler(signal, callable);
                  }
                } else {
                  // callable not found
                }
                return flag;
              }
              bool PythonQt::removeSignalHandler(QObject* obj, const char* signal, PyObject* receiver)
              {
                bool flag = false;
                PythonQtSignalReceiver* r = _p->_signalReceivers[obj];
                if (r) {
                  flag = r->removeSignalHandler(signal, receiver);
                }
                return flag;
              }
              PythonQtObjectPtr PythonQt::lookupCallable(PyObject* module, const QString& name)
              {
                PythonQtObjectPtr p = lookupObject(module, name);
                if (p) {
                  if (PyCallable_Check(p)) {
                    return p;
                  }
                }
                PyErr_Clear();
                return NULL;
              }
              PythonQtObjectPtr PythonQt::lookupObject(PyObject* module, const QString& name)
              {
                QStringList l = name.split('.');
                PythonQtObjectPtr p = module;
                PythonQtObjectPtr prev;
                QString s;
                QByteArray b;
                for (QStringList::ConstIterator i = l.begin(); i!=l.end() && p; ++i) {
                  prev = p;
                  b = (*i).toLatin1();
                  if (PyDict_Check(p)) {
                    p = PyDict_GetItemString(p, b.data());
                  } else {
                    p.setNewRef(PyObject_GetAttrString(p, b.data()));
                  }
                }
                PyErr_Clear();
                return p;
              }
              PythonQtObjectPtr PythonQt::getMainModule() {
                //both borrowed
                PythonQtObjectPtr dict = PyImport_GetModuleDict();
                return PyDict_GetItemString(dict, "__main__");
              }
              QVariant PythonQt::evalCode(PyObject* object, PyObject* pycode) {
                QVariant result;
                if (pycode) {
                  PyObject* dict = NULL;
                  if (PyModule_Check(object)) {
                    dict = PyModule_GetDict(object);
                  } else if (PyDict_Check(object)) {
                    dict = object;
                  }
                  PyObject* r = NULL;
                  if (dict) {
                    r = PyEval_EvalCode((PyCodeObject*)pycode, dict , dict);
                  }
                  if (r) {
                    result = PythonQtConv::PyObjToQVariant(r);
                    Py_DECREF(r);
                  } else {
                    handleError();
                  }
                } else {
                  handleError();
                }
                return result;
              }
              QVariant PythonQt::evalScript(PyObject* object, const QString& script, int start)
              {
                QVariant result;
                PythonQtObjectPtr p;
                PyObject* dict = NULL;
                if (PyModule_Check(object)) {
                  dict = PyModule_GetDict(object);
                } else if (PyDict_Check(object)) {
                  dict = object;
                }
                if (dict) {
                  p.setNewRef(PyRun_String(script.toLatin1().data(), start, dict, dict));
                }
                if (p) {
                  result = PythonQtConv::PyObjToQVariant(p);
                } else {
                  handleError();
                }
                return result;
              }
              void PythonQt::evalFile(PyObject* module, const QString& filename)
              {
                PythonQtObjectPtr code = parseFile(filename);
                if (code) {
                  evalCode(module, code);
                } else {
                  handleError();
                }
              }
              PythonQtObjectPtr PythonQt::parseFile(const QString& filename)
              {
                PythonQtObjectPtr p;
                p.setNewRef(PythonQtImport::getCodeFromPyc(filename));
                if (!p) {
                  handleError();
                }
                return p;
              }
              PythonQtObjectPtr PythonQt::createModuleFromFile(const QString& name, const QString& filename)
              {
                PythonQtObjectPtr code = parseFile(filename);
                PythonQtObjectPtr module = _p->createModule(name, code);
                return module;
              }
              PythonQtObjectPtr PythonQt::createModuleFromScript(const QString& name, const QString& script)
              {
                PyErr_Clear();
                QString scriptCode = script;
                if (scriptCode.isEmpty()) {
                  // we always need at least a linefeed
                  scriptCode = "\n";
                }
                PythonQtObjectPtr pycode;
                pycode.setNewRef(Py_CompileString((char*)scriptCode.toLatin1().data(), "",  Py_file_input));
                PythonQtObjectPtr module = _p->createModule(name, pycode);
                return module;
              }
              PythonQtObjectPtr PythonQt::createUniqueModule()
              {
                static QString pyQtStr("PythonQt_module");
                QString moduleName = pyQtStr+QString::number(_uniqueModuleCount++);
                return createModuleFromScript(moduleName);
              }
              void PythonQt::addObject(PyObject* object, const QString& name, QObject* qObject)
              {
                if (PyModule_Check(object)) {
                  PyModule_AddObject(object, name.toLatin1().data(), _p->wrapQObject(qObject));
                } else if (PyDict_Check(object)) {
                  PyDict_SetItemString(object, name.toLatin1().data(), _p->wrapQObject(qObject));
                } else {
                  PyObject_SetAttrString(object, name.toLatin1().data(), _p->wrapQObject(qObject));
                }
              }
              void PythonQt::addVariable(PyObject* object, const QString& name, const QVariant& v)
              {
                if (PyModule_Check(object)) {
                  PyModule_AddObject(object, name.toLatin1().data(), PythonQtConv::QVariantToPyObject(v));
                } else if (PyDict_Check(object)) {
                  PyDict_SetItemString(object, name.toLatin1().data(), PythonQtConv::QVariantToPyObject(v));
                } else {
                  PyObject_SetAttrString(object, name.toLatin1().data(), PythonQtConv::QVariantToPyObject(v));
                }
              }
              void PythonQt::removeVariable(PyObject* object, const QString& name)
              {
                if (PyDict_Check(object)) {
                  PyDict_DelItemString(object, name.toLatin1().data());
                } else {
                  PyObject_DelAttrString(object, name.toLatin1().data());
                }
              }
              QVariant PythonQt::getVariable(PyObject* object, const QString& objectname)
              {
                QVariant result;
                PythonQtObjectPtr obj = lookupObject(object, objectname);
                if (obj) {
                  result = PythonQtConv::PyObjToQVariant(obj);
                }
                return result;
              }
              QStringList PythonQt::introspection(PyObject* module, const QString& objectname, PythonQt::ObjectType type)
              {
                QStringList results;
                PythonQtObjectPtr object;
                if (objectname.isEmpty()) {
                  object = module;
                } else {
                  object = lookupObject(module, objectname);
                  if (!object && type == CallOverloads) {
                    PyObject* dict = lookupObject(module, "__builtins__");
                    if (dict) {
                      object = PyDict_GetItemString(dict, objectname.toLatin1().constData());
                    }
                  }
                }
                if (object) {
                  if (type == CallOverloads) {
                    if (PythonQtSlotFunction_Check(object)) {
                      PythonQtSlotFunctionObject* o = (PythonQtSlotFunctionObject*)object.object();
                      PythonQtSlotInfo* info = o->m_ml;
                      while (info) {
                        results << info->fullSignature();
                        info = info->nextInfo();
                      }
                    } else if (object->ob_type == &PythonQtClassWrapper_Type) {
                      PythonQtClassWrapper* o = (PythonQtClassWrapper*)object.object();
                      PythonQtSlotInfo* info = o->classInfo()->constructors();
                      while (info) {
                        results << info->fullSignature();
                        info = info->nextInfo();
                      }
                    } else {
                      //TODO: use pydoc!
                      PyObject* doc = PyObject_GetAttrString(object, "__doc__");
                      if (doc) {
                        results << PyString_AsString(doc);
                        Py_DECREF(doc);
                      }
                    }
                  } else {
                    PyObject* keys = NULL;
                    bool isDict = false;
                    if (PyDict_Check(object)) {
                      keys = PyDict_Keys(object);
                      isDict = true;
                    } else {
                      keys = PyObject_Dir(object);
                    }
                    if (keys) {
                      int count = PyList_Size(keys);
                      PyObject* key;
                      PyObject* value;
                      QString keystr;
                      for (int i = 0;i<count;i++) {
                        key = PyList_GetItem(keys,i);
                        if (isDict) {
                          value = PyDict_GetItem(object, key);
                          Py_INCREF(value);
                        } else {
                          value = PyObject_GetAttr(object, key);
                        }
                        if (!value) continue;
                        keystr = PyString_AsString(key);
                        static const QString underscoreStr("__tmp");
                        if (!keystr.startsWith(underscoreStr)) {
                          switch (type) {
                          case Anything:
                            results << keystr;
                            break;
                          case Class:
                            if (value->ob_type == &PyClass_Type) {
                              results << keystr;
                            }
                            break;
                          case Variable:
                            if (value->ob_type != &PyClass_Type
                              && value->ob_type != &PyCFunction_Type
                              && value->ob_type != &PyFunction_Type
                              && value->ob_type != &PyModule_Type
                              ) {
                              results << keystr;
                            }
                            break;
                          case Function:
                            if (value->ob_type == &PyFunction_Type ||
                              value->ob_type == &PyMethod_Type
                              ) {
                              results << keystr;
                            }
                            break;
                          case Module:
                            if (value->ob_type == &PyModule_Type) {
                              results << keystr;
                            }
                            break;
                          default:
                            std::cerr << "PythonQt: introspection: unknown case" << ", in " << __FILE__ << ":" << __LINE__ << std::endl;
                          }
                        }
                        Py_DECREF(value);
                      }
                      Py_DECREF(keys);
                    }
                  }
                }
                return results;
              }
              QVariant PythonQt::call(PyObject* object, const QString& name, const QVariantList& args)
              {
                PythonQtObjectPtr callable = lookupCallable(object, name);
                if (callable) {
                  return call(callable, args);
                } else {
                  return QVariant();
                }
              }
              QVariant PythonQt::call(PyObject* callable, const QVariantList& args)
              {
                QVariant r;
                if (callable) {
                  PythonQtObjectPtr pargs;
                  int count = args.size();
                  if (count>0) {
                    pargs.setNewRef(PyTuple_New(count));
                  }
                  bool err = false;
                  // transform QVariants to Python
                  for (int i = 0; i < count; i++) {
                    PyObject* arg = PythonQtConv::QVariantToPyObject(args.at(i));
                    if (arg) {
                      // steals reference, no unref
                      PyTuple_SetItem(pargs, i,arg);
                    } else {
                      err = true;
                      break;
                    }
                  }
                  if (!err) {
                    PyErr_Clear();
                    PythonQtObjectPtr result;
                    result.setNewRef(PyObject_CallObject(callable, pargs));
                    if (result) {
                      // ok
                      r = PythonQtConv::PyObjToQVariant(result);
                    } else {
                      PythonQt::self()->handleError();
                    }
                  }
                }
                return r;
              }
              void PythonQt::addInstanceDecorators(QObject* o)
              {
                _p->addDecorators(o, PythonQtPrivate::InstanceDecorator);
              }
              void PythonQt::addClassDecorators(QObject* o)
              {
                _p->addDecorators(o, PythonQtPrivate::StaticDecorator | PythonQtPrivate::ConstructorDecorator | PythonQtPrivate::DestructorDecorator);
              }
              void PythonQt::addDecorators(QObject* o)
              {
                _p->addDecorators(o, PythonQtPrivate::AllDecorators);
              }
              void PythonQt::registerQObjectClassNames(const QStringList& names)
              {
                _p->registerQObjectClassNames(names);
              }
              void PythonQt::setImporter(PythonQtImportFileInterface* importInterface)
              {
                PythonQtImport::init();
                _p->_importInterface = importInterface;
              }
              void PythonQt::setImporterIgnorePaths(const QStringList& paths)
              {
                _p->_importIgnorePaths = paths;
              }
              const QStringList& PythonQt::getImporterIgnorePaths()
              {
                return _p->_importIgnorePaths;
              }
              void PythonQt::addWrapperFactory(PythonQtCppWrapperFactory* factory)
              {
                _p->_cppWrapperFactories.append(factory);
              }
              //---------------------------------------------------------------------------------------------------
              PythonQtPrivate::PythonQtPrivate()
              {
                _importInterface = NULL;
                _defaultImporter = new PythonQtQFileImporter;
                _noLongerWrappedCB = NULL;
                _wrappedCB = NULL;
                _currentClassInfoForClassWrapperCreation = NULL;
              }
              PythonQtClassInfo* PythonQtPrivate::currentClassInfoForClassWrapperCreation()
              {
                PythonQtClassInfo* info = _currentClassInfoForClassWrapperCreation;
                _currentClassInfoForClassWrapperCreation = NULL;
                return info;
              }
              void PythonQtPrivate::addDecorators(QObject* o, int decoTypes)
              {
                o->setParent(this);
                int numMethods = o->metaObject()->methodCount();
                for (int i = 0; i < numMethods; i++) {
                  QMetaMethod m = o->metaObject()->method(i);
                  if ((m.methodType() == QMetaMethod::Method ||
                    m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
                    if (qstrncmp(m.signature(), "new_", 4)==0) {
                      if ((decoTypes & ConstructorDecorator) == 0) continue;
                      const PythonQtMethodInfo* info = PythonQtMethodInfo::getCachedMethodInfo(m, NULL);
                      if (info->parameters().at(0).isPointer) {
                        QByteArray signature = m.signature();
                        QByteArray nameOfClass = signature.mid(4, signature.indexOf('(')-4);
                        PythonQtClassInfo* classInfo = lookupClassInfoAndCreateIfNotPresent(nameOfClass);
                        PythonQtSlotInfo* newSlot = new PythonQtSlotInfo(NULL, m, i, o, PythonQtSlotInfo::ClassDecorator);
                        classInfo->addConstructor(newSlot);
                      }
                    } else if (qstrncmp(m.signature(), "delete_", 7)==0) {
                      if ((decoTypes & DestructorDecorator) == 0) continue;
                      QByteArray signature = m.signature();
                      QByteArray nameOfClass = signature.mid(7, signature.indexOf('(')-7);
                      PythonQtClassInfo* classInfo = lookupClassInfoAndCreateIfNotPresent(nameOfClass);
                      PythonQtSlotInfo* newSlot = new PythonQtSlotInfo(NULL, m, i, o, PythonQtSlotInfo::ClassDecorator);
                      classInfo->setDestructor(newSlot);
                    } else if (qstrncmp(m.signature(), "static_", 7)==0) {
                      if ((decoTypes & StaticDecorator) == 0) continue;
                      QByteArray signature = m.signature();
                      QByteArray nameOfClass = signature.mid(signature.indexOf('_')+1);
                      nameOfClass = nameOfClass.mid(0, nameOfClass.indexOf('_'));
                      PythonQtClassInfo* classInfo = lookupClassInfoAndCreateIfNotPresent(nameOfClass);
                      PythonQtSlotInfo* newSlot = new PythonQtSlotInfo(NULL, m, i, o, PythonQtSlotInfo::ClassDecorator);
                      classInfo->addDecoratorSlot(newSlot);
                    } else {
                      if ((decoTypes & InstanceDecorator) == 0) continue;
                      const PythonQtMethodInfo* info = PythonQtMethodInfo::getCachedMethodInfo(m, NULL);
                      if (info->parameters().count()>1) {
                        PythonQtMethodInfo::ParameterInfo p = info->parameters().at(1);
                        if (p.isPointer) {
                          PythonQtClassInfo* classInfo = lookupClassInfoAndCreateIfNotPresent(p.name);
                          PythonQtSlotInfo* newSlot = new PythonQtSlotInfo(NULL, m, i, o, PythonQtSlotInfo::InstanceDecorator);
                          classInfo->addDecoratorSlot(newSlot);
                        }
                      }
                    }
                  }
                }
              }
              void PythonQtPrivate::registerQObjectClassNames(const QStringList& names)
              {
                foreach(QString name, names) {
                  _knownQObjectClassNames.insert(name.toLatin1(), true);
                }
              }
              void PythonQtPrivate::removeSignalEmitter(QObject* obj)
              {
                _signalReceivers.remove(obj);
              }
              bool PythonQt::handleError()
              {
                bool flag = false;
                if (PyErr_Occurred()) {
                  // currently we just print the error and the stderr handler parses the errors
                  PyErr_Print();
                  /*
                  // EXTRA: the format of the ptype and ptraceback is not really documented, so I use PyErr_Print() above
                  PyObject *ptype;
                  PyObject *pvalue;
                  PyObject *ptraceback;
                  PyErr_Fetch( &ptype, &pvalue, &ptraceback);
                    Py_XDECREF(ptype);
                    Py_XDECREF(pvalue);
                    Py_XDECREF(ptraceback);
                  */
                  PyErr_Clear();
                  flag = true;
                }
                return flag;
              }
              void PythonQt::addSysPath(const QString& path)
              {
                PythonQtObjectPtr sys;
                sys.setNewRef(PyImport_ImportModule("sys"));
                PythonQtObjectPtr obj = lookupObject(sys, "path");
                PyList_Insert(obj, 0, PythonQtConv::QStringToPyObject(path));
              }
              void PythonQt::overwriteSysPath(const QStringList& paths)
              {
                PythonQtObjectPtr sys;
                sys.setNewRef(PyImport_ImportModule("sys"));
                PyModule_AddObject(sys, "path", PythonQtConv::QStringListToPyList(paths));
              }
              void PythonQt::setModuleImportPath(PyObject* module, const QStringList& paths)
              {
                PyModule_AddObject(module, "__path__", PythonQtConv::QStringListToPyList(paths));
              }
              void PythonQt::stdOutRedirectCB(const QString& str)
              {
                emit PythonQt::self()->pythonStdOut(str);
              }
              void PythonQt::stdErrRedirectCB(const QString& str)
              {
                emit PythonQt::self()->pythonStdErr(str);
              }
              void PythonQt::setQObjectWrappedCallback(PythonQtQObjectWrappedCB* cb)
              {
                _p->_wrappedCB = cb;
              }
              void PythonQt::setQObjectNoLongerWrappedCallback(PythonQtQObjectNoLongerWrappedCB* cb)
              {
                _p->_noLongerWrappedCB = cb;
              }
              static PyMethodDef PythonQtMethods[] = {
                {NULL, NULL, 0, NULL}
              };
              void PythonQt::initPythonQtModule(bool redirectStdOut)
              {
                _p->_pythonQtModule = Py_InitModule("PythonQt", PythonQtMethods);
                if (redirectStdOut) {
                  PythonQtObjectPtr sys;
                  PythonQtObjectPtr out;
                  PythonQtObjectPtr err;
                  sys.setNewRef(PyImport_ImportModule("sys"));
                  // create a redirection object for stdout and stderr
                  out = PythonQtStdOutRedirectType.tp_new(&PythonQtStdOutRedirectType,NULL, NULL);
                  ((PythonQtStdOutRedirect*)out.object())->_cb = stdOutRedirectCB;
                  err = PythonQtStdOutRedirectType.tp_new(&PythonQtStdOutRedirectType,NULL, NULL);
                  ((PythonQtStdOutRedirect*)err.object())->_cb = stdErrRedirectCB;
                  // replace the built in file objects with our own objects
                  PyModule_AddObject(sys, "stdout", out);
                  PyModule_AddObject(sys, "stderr", err);
                }
              }
              void PythonQt::registerCPPClass(const char* typeName, const char* parentTypeName, const char* package, PythonQtQObjectCreatorFunctionCB* wrapperCreator,  PythonQtShellSetInstanceWrapperCB* shell)
              {
                _p->registerCPPClass(typeName, parentTypeName, package, wrapperCreator, shell);
              }
              PythonQtClassInfo* PythonQtPrivate::lookupClassInfoAndCreateIfNotPresent(const char* typeName)
              {
                PythonQtClassInfo* info = _knownClassInfos.value(typeName);
                if (!info) {
                  info = new PythonQtClassInfo();
                  info->setupCPPObject(typeName);
                  _knownClassInfos.insert(typeName, info);
                }
                return info;
              }
              void PythonQt::addPolymorphicHandler(const char* typeName, PythonQtPolymorphicHandlerCB* cb)
              {
                _p->addPolymorphicHandler(typeName, cb);
              }
              void PythonQtPrivate::addPolymorphicHandler(const char* typeName, PythonQtPolymorphicHandlerCB* cb)
              {
                PythonQtClassInfo* info = lookupClassInfoAndCreateIfNotPresent(typeName);
                info->addPolymorphicHandler(cb);
              }
              bool PythonQt::addParentClass(const char* typeName, const char* parentTypeName, int upcastingOffset)
              {
                return _p->addParentClass(typeName, parentTypeName, upcastingOffset);
              }
              bool PythonQtPrivate::addParentClass(const char* typeName, const char* parentTypeName, int upcastingOffset)
              {
                PythonQtClassInfo* info = _knownClassInfos.value(typeName);
                if (info) {
                  PythonQtClassInfo* parentInfo = lookupClassInfoAndCreateIfNotPresent(parentTypeName);
                  info->addParentClass(PythonQtClassInfo::ParentClassInfo(parentInfo, upcastingOffset));
                  return true;
                } else {
                  return false;
                }
              }
              void PythonQtPrivate::registerCPPClass(const char* typeName, const char* parentTypeName, const char* package, PythonQtQObjectCreatorFunctionCB* wrapperCreator,  PythonQtShellSetInstanceWrapperCB* shell)
              {
                PythonQtClassInfo* info = lookupClassInfoAndCreateIfNotPresent(typeName);
                if (!info->pythonQtClassWrapper()) {
                  info->setupCPPObject(typeName);
                  createPythonQtClassWrapper(info, package);
                }
                if (parentTypeName && strcmp(parentTypeName,"")!=0) {
                  addParentClass(typeName, parentTypeName, 0);
                }
                if (wrapperCreator) {
                  info->setDecoratorProvider(wrapperCreator);
                }
                if (shell) {
                  info->setShellSetInstanceWrapperCB(shell);
                }
              }
              PyObject* PythonQtPrivate::packageByName(const char* name)
              {
                if (name==NULL || name[0]==0) {
                  return _pythonQtModule;
                }
                PyObject* v = _packages.value(name);
                if (!v) {
                  v = PyImport_AddModule((QByteArray("PythonQt.") + name).constData());
                  _packages.insert(name, v);
                  // AddObject steals the reference, so increment it!
                  Py_INCREF(v);
                  PyModule_AddObject(_pythonQtModule, name, v);
                }
                return v;
              }
              PyObject* PythonQt::helpCalled(PythonQtClassInfo* info)
              {
                if (_p->_initFlags & ExternalHelp) {
                  emit pythonHelpRequest(QByteArray(info->className()));
                  return Py_BuildValue("");
                } else {
                  return PyString_FromString(info->help().toLatin1().data());
                }
              }
              void PythonQtPrivate::removeWrapperPointer(void* obj)
              {
                _wrappedObjects.remove(obj);
              }
              void PythonQtPrivate::addWrapperPointer(void* obj, PythonQtInstanceWrapper* wrapper)
              {
                _wrappedObjects.insert(obj, wrapper);
              }
              PythonQtInstanceWrapper* PythonQtPrivate::findWrapperAndRemoveUnused(void* obj)
              {
                PythonQtInstanceWrapper* wrap = _wrappedObjects.value(obj);
                if (wrap && !wrap->_wrappedPtr && wrap->_obj == NULL) {
                  // this is a wrapper whose QObject was already removed due to destruction
                  // so the obj pointer has to be a new QObject with the same address...
                  // we remove the old one and set the copy to NULL
                  wrap->_objPointerCopy = NULL;
                  removeWrapperPointer(obj);
                  wrap = NULL;
                }
                return wrap;
              }
              PythonQtObjectPtr PythonQtPrivate::createModule(const QString& name, PyObject* pycode)
              {
                PythonQtObjectPtr result;
                if (pycode) {
                  result.setNewRef(PyImport_ExecCodeModule((char*)name.toLatin1().data(), pycode));
                } else {
                  PythonQt::self()->handleError();
                }
                return result;
              }

src/PythonQt.h +6 -3

              #ifndef _PYTHONQT_H
              #define _PYTHONQT_H
              /*
               *
               *  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    PythonQt.h
              // \author  Florian Link
              // \author  Last changed by $Author: florian $
              // \date    2006-05
              */
              //----------------------------------------------------------------------------------
              #include "PythonQtSystem.h"
              #include "PythonQtInstanceWrapper.h"
              #include "PythonQtClassWrapper.h"
              #include "PythonQtSlot.h"
              #include "PythonQtObjectPtr.h"
              #include <QObject>
              #include <QVariant>
              #include <QList>
              #include <QHash>
              #include <QByteArray>
              #include <QStringList>
              #include <QtDebug>
              #include <iostream>
              class PythonQtClassInfo;
              class PythonQtPrivate;
              class PythonQtMethodInfo;
              class PythonQtSignalReceiver;
              class PythonQtImportFileInterface;
              class PythonQtCppWrapperFactory;
              class PythonQtQFileImporter;
              typedef void  PythonQtQObjectWrappedCB(QObject* object);
              typedef void  PythonQtQObjectNoLongerWrappedCB(QObject* object);
              typedef void* PythonQtPolymorphicHandlerCB(const void *ptr, char **class_name);
              typedef void PythonQtShellSetInstanceWrapperCB(void* object, PythonQtInstanceWrapper* wrapper);
              template<class T> void PythonQtSetInstanceWrapperOnShell(void* object, PythonQtInstanceWrapper* wrapper) { ((T*)object)->_wrapper = wrapper; };
              //! returns the offset that needs to be added to upcast an object of type T1 to T2
              template<class T1, class T2> int PythonQtUpcastingOffset() {
                return (((char*)(static_cast<T2*>(reinterpret_cast<T1*>(0x100)))) - ((char*)reinterpret_cast<T1*>(0x100)));
              }
              //! callback to create a QObject lazily
              typedef QObject* PythonQtQObjectCreatorFunctionCB();
              //! helper template to create a derived QObject class
              template<class T> QObject* PythonQtCreateObject() { return new T(); };
              //! the main interface to the Python Qt binding, realized as a singleton
              class PYTHONQT_EXPORT PythonQt : public QObject {
                Q_OBJECT
              public:
                enum InitFlags {
                  RedirectStdOut = 1,   //!<< sets if the std out/err is redirected to pythonStdOut() and pythonStdErr() signals
                  IgnoreSiteModule = 2, //!<< sets if Python should ignore the site module
                  ExternalHelp = 4      //!<< sets if help() calls on PythonQt modules are forwarded to the pythonHelpRequest() signal
                };
                //! initialize the python qt binding (flags are a or combination of InitFlags)
                static void init(int flags = IgnoreSiteModule | RedirectStdOut);
                //! cleanup
                static void cleanup();
                //! get the singleton instance
                static PythonQt* self() { return _self; }
                //-----------------------------------------------------------------------------
                // Public API:
                //! defines the object types for introspection
                enum ObjectType {
                  Class,
                  Function,
                  Variable,
                  Module,
                  Anything,
                  CallOverloads
                };
                //! overwrite the python sys path (call this directly after PythonQt::init() if you want to change the std python sys path)
                void overwriteSysPath(const QStringList& paths);
                //! prepend a path to sys.path to allow importing from it
                void addSysPath(const QString& path);
                //! sets the __path__ list of a module to the given list (important for local imports)
                void setModuleImportPath(PyObject* module, const QStringList& paths);
                //! get the __main__ module of python
                PythonQtObjectPtr getMainModule();
                //! registers a QObject derived class to PythonQt (this is implicitly called by addObject as well)
                /* Since Qt4 does not offer a way to detect if a given classname is derived from QObject and thus has a QMetaObject,
                 you MUST register all your QObject derived classes here when you want them to be detected in signal and slot calls */
                void registerClass(const QMetaObject* metaobject, const char* package = NULL, PythonQtQObjectCreatorFunctionCB* wrapperCreator = NULL, PythonQtShellSetInstanceWrapperCB* shell = NULL);
                //! add a wrapper object for the given QMetaType typeName, also does an addClassDecorators() to add constructors for variants
                //! (ownership of wrapper is passed to PythonQt)
                /*! Make sure that you have done a qRegisterMetaType first, if typeName is a user type!
                 This will add a wrapper object that is used to make calls to the given classname \c typeName.
                 All slots that take a pointer to typeName as the first argument will be callable from Python on
                 a variant object that contains such a type.
                 */
                void registerCPPClass(const char* typeName, const char* parentTypeName = NULL, const char* package = NULL, PythonQtQObjectCreatorFunctionCB* wrapperCreator = NULL, PythonQtShellSetInstanceWrapperCB* shell = NULL);
                //! as an alternative to registerClass, you can tell PythonQt the names of QObject derived classes
                //! and it will register the classes when it first sees a pointer to such a derived class
                void registerQObjectClassNames(const QStringList& names);
                //! add a parent class relation to the \c given typeName, the upcastingOffset is needed for multiple inheritance
                //! and can be calculated using PythonQtUpcastingOffset<type,parentType>(), which also verifies that
                //! type is really derived from parentType.
                //! Returns false if the typeName was not yet registered.
                bool addParentClass(const char* typeName, const char* parentTypeName, int upcastingOffset=0);
                //! add a handler for polymorphic downcasting
                void addPolymorphicHandler(const char* typeName, PythonQtPolymorphicHandlerCB* cb);
                //! parses the given file and returns the python code object, this can then be used to call evalCode()
                PythonQtObjectPtr parseFile(const QString& filename);
                //! evaluates the given code and returns the result value (use Py_Compile etc. to create pycode from string)
                //! If pycode is NULL, a python error is printed.
                QVariant evalCode(PyObject* object, PyObject* pycode);
                //! evaluates the given script code and returns the result value
                QVariant evalScript(PyObject* object, const QString& script, int start = Py_file_input);
                //! evaluates the given script code from file
                void evalFile(PyObject* object, const QString& filename);
                //! creates the new module \c name and evaluates the given file in the context of that module
                //! If the \c script is empty, the module contains no initial code. You can use evalScript/evalCode to add code
                //! to a module later on.
                //! The user needs to make sure that the \c name is unique in the python module dictionary.
                PythonQtObjectPtr createModuleFromFile(const QString& name, const QString& filename);
                //! creates the new module \c name and evaluates the given script in the context of that module.
                //! If the \c script is empty, the module contains no initial code. You can use evalScript/evalCode to add code
                //! to a module later on.
                //! The user needs to make sure that the \c name is unique in the python module dictionary.
                PythonQtObjectPtr createModuleFromScript(const QString& name, const QString& script = QString());
                //! create a uniquely named module, you can use evalFile or evalScript to populate the module with
                //! script code
                PythonQtObjectPtr createUniqueModule();
                //@{ Signal handlers
                //! add a signal handler to the given \c signal of \c obj  and connect it to a callable \c objectname in module
                bool addSignalHandler(QObject* obj, const char* signal, PyObject* module, const QString& objectname);
                //! remove a signal handler from the given \c signal of \c obj
                bool removeSignalHandler(QObject* obj, const char* signal, PyObject* module, const QString& objectname);
                //! add a signal handler to the given \c signal of \c obj  and connect it to a callable \c receiver
                bool addSignalHandler(QObject* obj, const char* signal, PyObject* receiver);
                //! remove a signal handler from the given \c signal of \c obj
                bool removeSignalHandler(QObject* obj, const char* signal, PyObject* receiver);
                //@}
                //@{ Variable access
                //! add the given \c qObject to the python \c object as a variable with \c name (it can be removed via clearVariable)
                void addObject(PyObject* object, const QString& name, QObject* qObject);
                //! add the given variable to the object
                void addVariable(PyObject* object, const QString& name, const QVariant& v);
                //! remove the given variable
                void removeVariable(PyObject* module, const QString& name);
                //! get the variable with the \c name of the \c object, returns an invalid QVariant on error
                QVariant getVariable(PyObject* object, const QString& name);
                //! read vars etc. in scope of an \c object, optional looking inside of an object \c objectname
                QStringList introspection(PyObject* object, const QString& objectname, ObjectType type);
                //! returns the found callable object or NULL
                //! @return new reference
                PythonQtObjectPtr lookupCallable(PyObject* object, const QString& name);
                //@}
                //@{ Calling of python callables
                //! call the given python \c callable in the scope of object, returns the result converted to a QVariant
                QVariant call(PyObject* object, const QString& callable, const QVariantList& args = QVariantList());
                //! call the given python object, returns the result converted to a QVariant
                QVariant call(PyObject* callable, const QVariantList& args = QVariantList());
                //@}
                //@{ Decorations, constructors, wrappers...
                //! add an object whose slots will be used as decorator slots for
                //! other QObjects or CPP classes. The slots need to follow the
                //! convention that the first argument is a pointer to the wrapped object.
                //! (ownership is passed to PythonQt)
                /*!
                Example:
                A slot with the signature
                \code
                bool doSomething(QWidget* w, int a)
                \endcode
                will extend QWidget instances (and derived classes) with a "bool doSomething(int a)" slot
                that will be called with the concrete instance as first argument.
                So in Python you can now e.g. call
                \code
                someWidget.doSomething(12)
                \endcode
                without QWidget really having this method. This allows to easily make normal methods
                of Qt classes callable by forwarding them with such decorator slots
                or to make CPP classes (which are not derived from QObject) callable from Python.
                */
                void addInstanceDecorators(QObject* o);
                //! add an object whose slots will be used as decorator slots for
                //! class objects (ownership is passed to PythonQt)
                /*!
                The slots need to follow the following convention:
                - SomeClass* new_SomeClass(...)
                - QVariant new_SomeClass(...)
                - void delete_SomeClass(SomeClass*)
                - ... static_SomeClass_someName(...)
                This will add:
                - a constructor
                - a constructor which generates a QVariant
                - a destructor (only useful for CPP objects)
                - a static decorator slot which will be available on the MetaObject (visible in PythonQt module)
                */
                void addClassDecorators(QObject* o);
                //! this will add the object both as class and instance decorator (ownership is passed to PythonQt)
                void addDecorators(QObject* o);
                //! add the given factory to PythonQt (ownership stays with caller)
                void addWrapperFactory(PythonQtCppWrapperFactory* factory);
                //@}
                //@{ Custom importer (to replace internal import implementation of python)
                //! replace the internal import implementation and use the supplied interface to load files (both py and pyc files)
                //! (this method should be called directly after initialization of init() and before calling overwriteSysPath().
                //! On the first call to this method, it will install a generic PythonQt importer in Pythons "path_hooks".
                //! This is not reversible, so even setting setImporter(NULL) afterwards will
                //! keep the custom PythonQt importer with a QFile default import interface.
                //! Subsequent python import calls will make use of the passed importInterface
                //! which forwards all import calls to the given \c importInterface.
                //! Passing NULL will install a default QFile importer.
                //! (\c importInterface ownership stays with caller)
                void setImporter(PythonQtImportFileInterface* importInterface);
                //! this installs the default QFile importer (which effectively does a setImporter(NULL))
                //! (without calling setImporter or installDefaultImporter at least once, the default python import
                //! mechanism is in place)
                //! the default importer allows to import files from anywhere QFile can read from,
                //! including the Qt resource system using ":". Keep in mind that you need to extend
                //! "sys.path" with ":" to be able to import from the Qt resources.
                void installDefaultImporter() { setImporter(NULL); }
                //! set paths that the importer should ignore
                void setImporterIgnorePaths(const QStringList& paths);
                //! get paths that the importer should ignore
                const QStringList& getImporterIgnorePaths();
                //@}
                //! get access to internal data (should not be used on the public API, but is used by some C functions)
                static PythonQtPrivate* priv() { return _self->_p; }
                //! get access to the file importer (if set)
                static PythonQtImportFileInterface* importInterface();
                //! handle a python error, call this when a python function fails. If no error occurred, it returns false.
                //! The error is currently just output to the python stderr, future version might implement better trace printing
                bool handleError();
                //! set a callback that is called when a QObject with parent == NULL is wrapped by pythonqt
                void setQObjectWrappedCallback(PythonQtQObjectWrappedCB* cb);
                //! set a callback that is called when a QObject with parent == NULL is no longer wrapped by pythonqt
                void setQObjectNoLongerWrappedCallback(PythonQtQObjectNoLongerWrappedCB* cb);
                //! call the callback if it is set
                static void qObjectNoLongerWrappedCB(QObject* o);
              signals:
                //! emitted when python outputs something to stdout (and redirection is turned on)
                void pythonStdOut(const QString& str);
                //! emitted when python outputs something to stderr (and redirection is turned on)
                void pythonStdErr(const QString& str);
                //! emitted when help() is called on a PythonQt object and \c ExternalHelp is enabled
                void pythonHelpRequest(const QByteArray& cppClassName);
              public:
                //! called by internal help methods
                PyObject* helpCalled(PythonQtClassInfo* info);
                //! returns the found object or NULL
                //! @return new reference
                PythonQtObjectPtr lookupObject(PyObject* module, const QString& name);
              private:
                void initPythonQtModule(bool redirectStdOut);
                //! callback for stdout redirection, emits pythonStdOut signal
                static void stdOutRedirectCB(const QString& str);
                //! callback for stderr redirection, emits pythonStdErr signal
                static void stdErrRedirectCB(const QString& str);
                //! get (and create if not available) the signal receiver of that QObject, signal receiver is made child of the passed \c obj
                PythonQtSignalReceiver* getSignalReceiver(QObject* obj);
                PythonQt(int flags);
                ~PythonQt();
                static PythonQt* _self;
                static int _uniqueModuleCount;
                PythonQtPrivate* _p;
              };
              //! internal PythonQt details
              class PYTHONQT_EXPORT PythonQtPrivate : public QObject {
                Q_OBJECT
              public:
                PythonQtPrivate();
                ~PythonQtPrivate();
                enum DecoratorTypes {
                  StaticDecorator = 1,
                  ConstructorDecorator = 2,
                  DestructorDecorator = 4,
                  InstanceDecorator = 8,
                  AllDecorators = 0xffff
                };
                //! returns if the id is the id for PythonQtObjectPtr
                bool isPythonQtObjectPtrMetaId(int id) { return _PythonQtObjectPtr_metaId == id; }
                //! add the wrapper pointer (for reuse if the same obj appears while wrapper still exists)
                void addWrapperPointer(void* obj, PythonQtInstanceWrapper* wrapper);
                //! remove the wrapper ptr again
                void removeWrapperPointer(void* obj);
                //! add parent class relation
                bool addParentClass(const char* typeName, const char* parentTypeName, int upcastingOffset);
                //! add a handler for polymorphic downcasting
                void addPolymorphicHandler(const char* typeName, PythonQtPolymorphicHandlerCB* cb);
                //! lookup existing classinfo and return new if not yet present
                PythonQtClassInfo* lookupClassInfoAndCreateIfNotPresent(const char* typeName);
                //! called when a signal emitting QObject is destroyed to remove the signal handler from the hash map
                void removeSignalEmitter(QObject* obj);
                //! wrap the given QObject into a Python object (or return existing wrapper!)
                PyObject* wrapQObject(QObject* obj);
                //! wrap the given ptr into a Python object (or return existing wrapper!) if there is a known QObject of that name or a known wrapper in the factory
                PyObject* wrapPtr(void* ptr, const QByteArray& name);
                //! registers a QObject derived class to PythonQt (this is implicitly called by addObject as well)
                /* Since Qt4 does not offer a way to detect if a given classname is derived from QObject and thus has a QMetaObject,
                   you MUST register all your QObject derived classes here when you want them to be detected in signal and slot calls */
                void registerClass(const QMetaObject* metaobject, const char* package = NULL, PythonQtQObjectCreatorFunctionCB* wrapperCreator = NULL, PythonQtShellSetInstanceWrapperCB* shell = NULL);
                //! add a wrapper object for the given QMetaType typeName, also does an addClassDecorators() to add constructors for variants
                //! (ownership of wrapper is passed to PythonQt)
                /*! Make sure that you have done a qRegisterMetaType first, if typeName is a user type!
                 This will add a wrapper object that is used to make calls to the given classname \c typeName.
                 All slots that take a pointer to typeName as the first argument will be callable from Python on
                 a variant object that contains such a type.
                 */
                void registerCPPClass(const char* typeName, const char* parentTypeName = NULL, const char* package = NULL, PythonQtQObjectCreatorFunctionCB* wrapperCreator = NULL, PythonQtShellSetInstanceWrapperCB* shell = NULL);
                //! as an alternative to registerClass, you can tell PythonQt the names of QObject derived classes
                //! and it will register the classes when it first sees a pointer to such a derived class
                void registerQObjectClassNames(const QStringList& names);
                //! add a decorator object
                void addDecorators(QObject* o, int decoTypes);
-               //! helper method that creates a PythonQtClassWrapper object
+               //! helper method that creates a PythonQtClassWrapper object  (returns a new reference)
                PythonQtClassWrapper* createNewPythonQtClassWrapper(PythonQtClassInfo* info, const char* package = NULL);
-               //! helper that creates a new int derived class that represents the enum of the given name
-               PyObject* createNewPythonQtEnumWrapper(const char* enumName, PyObject* parentObject);
+               //! create a new instance of the given enum type with given value (returns a new reference)
+               static PyObject*  createEnumValueInstance(PyObject* enumType, unsigned int enumValue);
+               //! helper that creates a new int derived class that represents the enum of the given name  (returns a new reference)
+               static PyObject* createNewPythonQtEnumWrapper(const char* enumName, PyObject* parentObject);
                //! helper method that creates a PythonQtInstanceWrapper object and registers it in the object map
                PythonQtInstanceWrapper* createNewPythonQtInstanceWrapper(QObject* obj, PythonQtClassInfo* info, void* wrappedPtr = NULL);
                //! get the class info for a meta object (if available)
                PythonQtClassInfo* getClassInfo(const QMetaObject* meta) { return _knownClassInfos.value(meta->className()); }
                //! get the class info for a meta object (if available)
                PythonQtClassInfo* getClassInfo(const QByteArray& className) { return _knownClassInfos.value(className); }
                //! creates the new module from the given pycode
                PythonQtObjectPtr createModule(const QString& name, PyObject* pycode);
                //! get the current class info (for the next PythonQtClassWrapper that is created) and reset it to NULL again
                PythonQtClassInfo* currentClassInfoForClassWrapperCreation();
                //! the dummy tuple (which is empty and may be used to detected that a wrapper is called from internal wrapper creation
                static PyObject* dummyTuple();
              private:
                //! create a new pythonqt class wrapper and place it in the pythonqt module
                void createPythonQtClassWrapper(PythonQtClassInfo* info, const char* package);
                //! get/create new package module (the returned object is a borrowed reference)
                PyObject* packageByName(const char* name);
                //! get the wrapper for a given pointer (and remove a wrapper of an already destroyed qobject)
                PythonQtInstanceWrapper* findWrapperAndRemoveUnused(void* obj);
                //! stores pointer to PyObject mapping of wrapped QObjects AND C++ objects
                QHash<void* , PythonQtInstanceWrapper *> _wrappedObjects;
                //! stores the meta info of known Qt classes
                QHash<QByteArray, PythonQtClassInfo *>   _knownClassInfos;
                //! names of qobject derived classes that can be casted to qobject savely
                QHash<QByteArray, bool> _knownQObjectClassNames;
                //! stores signal receivers for QObjects
                QHash<QObject* , PythonQtSignalReceiver *> _signalReceivers;
                //! the PythonQt python module
                PythonQtObjectPtr _pythonQtModule;
                //! the importer interface (if set)
                PythonQtImportFileInterface* _importInterface;
                //! the default importer
                PythonQtQFileImporter* _defaultImporter;
                PythonQtQObjectNoLongerWrappedCB* _noLongerWrappedCB;
                PythonQtQObjectWrappedCB* _wrappedCB;
                QStringList _importIgnorePaths;
                //! the cpp object wrapper factories
                QList<PythonQtCppWrapperFactory*> _cppWrapperFactories;
                QHash<QByteArray, PyObject*> _packages;
                PythonQtClassInfo* _currentClassInfoForClassWrapperCreation;
                int _initFlags;
                int _PythonQtObjectPtr_metaId;
                friend class PythonQt;
              };
              #endif

src/PythonQtClassInfo.cpp +6 -5

              /*
              *
              *  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    PythonQt.cpp
              // \author  Florian Link
              // \author  Last changed by $Author: florian $
              // \date    2006-05
              */
              //----------------------------------------------------------------------------------
              #include "PythonQtClassInfo.h"
              #include "PythonQtMethodInfo.h"
              #include "PythonQt.h"
              #include <QMetaMethod>
              #include <QMetaObject>
              #include <QMetaEnum>
              QHash<QByteArray, int> PythonQtMethodInfo::_parameterTypeDict;
              PythonQtClassInfo::PythonQtClassInfo() {
                _meta = NULL;
                _constructors = NULL;
                _destructor = NULL;
                _decoratorProvider = NULL;
                _decoratorProviderCB = NULL;
                _pythonQtClassWrapper = NULL;
                _shellSetInstanceWrapperCB = NULL;
                _metaTypeId = -1;
                _isQObject = false;
                _enumsCreated = false;
              }
              PythonQtClassInfo::~PythonQtClassInfo()
              {
                clearCachedMembers();
                if (_constructors) {
                  _constructors->deleteOverloadsAndThis();
                }
                if (_destructor) {
                  _destructor->deleteOverloadsAndThis();
                }
                foreach(PythonQtSlotInfo* info, _decoratorSlots) {
                  info->deleteOverloadsAndThis();
                }
              }
              void PythonQtClassInfo::setupQObject(const QMetaObject* meta)
              {
                // _wrappedClassName is already set earlier in the class setup
                _isQObject = true;
                _meta = meta;
              }
              void PythonQtClassInfo::setupCPPObject(const QByteArray& classname)
              {
                _isQObject = false;
                _wrappedClassName = classname;
                _metaTypeId = QMetaType::type(classname);
              }
              void PythonQtClassInfo::clearCachedMembers()
              {
                QHashIterator<QByteArray, PythonQtMemberInfo> i(_cachedMembers);
                while (i.hasNext()) {
                  PythonQtMemberInfo member = i.next().value();
                  if (member._type== PythonQtMemberInfo::Slot) {
                    PythonQtSlotInfo* info = member._slot;
                    while (info) {
                      PythonQtSlotInfo* next = info->nextInfo();
                      delete info;
                      info = next;
                    }
                  }
                }
              }
              int PythonQtClassInfo::findCharOffset(const char* sigStart, char someChar)
              {
                const char* sigEnd = sigStart;
                char c;
                do {
                  c = *sigEnd++;
                } while (c!=someChar && c!=0);
                return sigEnd-sigStart-1;
              }
              bool PythonQtClassInfo::lookForPropertyAndCache(const char* memberName)
              {
                bool found = false;
                bool nameMapped = false;
                const char* attributeName = memberName;
                // look for properties
                int i = _meta->indexOfProperty(attributeName);
                if (i==-1) {
                  // try to map name to objectName
                  if (qstrcmp(attributeName, "name")==0) {
                    attributeName = "objectName";
                    nameMapped = true;
                    i = _meta->indexOfProperty(attributeName);
                  }
                }
                if (i!=-1) {
                  PythonQtMemberInfo newInfo(_meta->property(i));
                  _cachedMembers.insert(attributeName, newInfo);
                  if (nameMapped) {
                    _cachedMembers.insert(memberName, newInfo);
                  }
                #ifdef PYTHONQT_DEBUG
                  std::cout << "caching property " << memberName << " on " << _meta->className() << std::endl;
                #endif
                  found = true;
                }
                return found;
              }
              PythonQtSlotInfo* PythonQtClassInfo::recursiveFindDecoratorSlotsFromDecoratorProvider(const char* memberName, PythonQtSlotInfo* inputInfo, bool &found, QHash<QByteArray, PythonQtMemberInfo>& memberCache, int upcastingOffset)
              {
                inputInfo = findDecoratorSlotsFromDecoratorProvider(memberName, inputInfo, found, memberCache, upcastingOffset);
                foreach(const ParentClassInfo& info, _parentClasses) {
                  inputInfo = info._parent->recursiveFindDecoratorSlotsFromDecoratorProvider(memberName, inputInfo, found, memberCache, upcastingOffset+info._upcastingOffset);
                }
                return inputInfo;
              }
              PythonQtSlotInfo* PythonQtClassInfo::findDecoratorSlotsFromDecoratorProvider(const char* memberName, PythonQtSlotInfo* tail, bool &found, QHash<QByteArray, PythonQtMemberInfo>& memberCache, int upcastingOffset) {
                QObject* decoratorProvider = decorator();
                int memberNameLen = strlen(memberName);
                if (decoratorProvider) {
                  //qDebug()<< "looking " << decoratorProvider->metaObject()->className() << " " << memberName << " " << upcastingOffset;
                  const QMetaObject* meta = decoratorProvider->metaObject();
                  int numMethods = meta->methodCount();
                  int startFrom = QObject::staticMetaObject.methodCount();
                  for (int i = startFrom; i < numMethods; i++) {
                    QMetaMethod m = meta->method(i);
                    if ((m.methodType() == QMetaMethod::Method ||
                         m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
                      const char* sigStart = m.signature();
                      bool isClassDeco = false;
                      if (qstrncmp(sigStart, "static_", 7)==0) {
                        // skip the static_classname_ part of the string
                        sigStart += 7 + 1 + strlen(className());
                        isClassDeco = true;
                      } else if (qstrncmp(sigStart, "new_", 4)==0) {
                        isClassDeco = true;
                      } else if (qstrncmp(sigStart, "delete_", 7)==0) {
                        isClassDeco = true;
                      }
                      // find the first '('
                      int offset = findCharOffset(sigStart, '(');
                      // XXX no checking is currently done if the slots have correct first argument or not...
                      // check if same length and same name
                      if (memberNameLen == offset && qstrncmp(memberName, sigStart, offset)==0) {
                        found = true;
                        PythonQtSlotInfo* info = new PythonQtSlotInfo(this, m, i, decoratorProvider, isClassDeco?PythonQtSlotInfo::ClassDecorator:PythonQtSlotInfo::InstanceDecorator);
                        info->setUpcastingOffset(upcastingOffset);
                        //qDebug()<< "adding " << decoratorProvider->metaObject()->className() << " " << memberName << " " << upcastingOffset;
                        if (tail) {
                          tail->setNextInfo(info);
                        } else {
                          PythonQtMemberInfo newInfo(info);
                          memberCache.insert(memberName, newInfo);
                        }
                        tail = info;
                      }
                    }
                  }
                }
                tail = findDecoratorSlots(memberName, memberNameLen, tail, found, memberCache, upcastingOffset);
                return tail;
              }
              bool PythonQtClassInfo::lookForMethodAndCache(const char* memberName)
              {
                bool found = false;
                int memberNameLen = strlen(memberName);
                PythonQtSlotInfo* tail = NULL;
                if (_meta) {
                  int numMethods = _meta->methodCount();
                  for (int i = 0; i < numMethods; i++) {
                    QMetaMethod m = _meta->method(i);
                    if ((m.methodType() == QMetaMethod::Method ||
                         m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
                      const char* sigStart = m.signature();
                      // find the first '('
                      int offset = findCharOffset(sigStart, '(');
                      // check if same length and same name
                      if (memberNameLen == offset && qstrncmp(memberName, sigStart, offset)==0) {
                        found = true;
                        PythonQtSlotInfo* info = new PythonQtSlotInfo(this, m, i);
                        if (tail) {
                          tail->setNextInfo(info);
                        } else {
                          PythonQtMemberInfo newInfo(info);
                          _cachedMembers.insert(memberName, newInfo);
                        }
                        tail = info;
                      }
                    }
                  }
                }
                // look for dynamic decorators in this class and in derived classes
                tail = recursiveFindDecoratorSlotsFromDecoratorProvider(memberName, tail, found, _cachedMembers, 0);
                return found;
              }
              bool PythonQtClassInfo::lookForEnumAndCache(const QMetaObject* meta, const char* memberName)
              {
                bool found = false;
                // look for enum values
                int enumCount = meta->enumeratorCount();
                for (int i=0;i<enumCount; i++) {
                  QMetaEnum e = meta->enumerator(i);
                  // we do not want flags, they will cause our values to appear two times
                  if (e.isFlag()) continue;
                  for (int j=0; j < e.keyCount(); j++) {
                    if (qstrcmp(e.key(j), memberName)==0) {
                      PyObject* enumType = findEnumWrapper(e.name());
                      if (enumType) {
-                       PyObject* args = Py_BuildValue("(i)", e.value(j));
-                       PyObject* enumValue = PyObject_Call(enumType, args, NULL);
-                       Py_DECREF(args);
                        PythonQtObjectPtr enumValuePtr;
-                       enumValuePtr.setNewRef(enumValue);
+                       enumValuePtr.setNewRef(PythonQtPrivate::createEnumValueInstance(enumType, e.value(j)));
                        PythonQtMemberInfo newInfo(enumValuePtr);
                        _cachedMembers.insert(memberName, newInfo);
                #ifdef PYTHONQT_DEBUG
                        std::cout << "caching enum " << memberName << " on " << meta->className() << std::endl;
                #endif
                        found = true;
                        break;
                      } else {
                        std::cout << "enum " << e.name() << " not found on " << className() << std::endl;
                      }
                    }
                  }
                }
                return found;
              }
              PythonQtMemberInfo PythonQtClassInfo::member(const char* memberName)
              {
                PythonQtMemberInfo info = _cachedMembers.value(memberName);
                if (info._type != PythonQtMemberInfo::Invalid) {
                  return info;
                } else {
                  bool found = false;
                  found = lookForPropertyAndCache(memberName);
                  if (!found) {
                    found = lookForMethodAndCache(memberName);
                  }
                  if (!found) {
                    if (_meta) {
                      // check enums in our meta object directly
                      found = lookForEnumAndCache(_meta, memberName);
                    }
                    if (!found) {
                      // check enums in the class hierachy of CPP classes
                      // look for dynamic decorators in this class and in derived classes
                      QList<QObject*> decoObjects;
                      recursiveCollectDecoratorObjects(decoObjects);
                      foreach(QObject* deco, decoObjects) {
                        // call on ourself for caching, but with different metaObject():
                        found = lookForEnumAndCache(deco->metaObject(), memberName);
                        if (found) {
                          break;
                        }
                      }
                    }
                  }
                  if (!found) {
                    PyObject* p = findEnumWrapper(memberName);
                    if (p) {
                      info._type = PythonQtMemberInfo::EnumWrapper;
                      info._enumWrapper = p;
                      _cachedMembers.insert(memberName, info);
                      found = true;
                    }
                  }
                  if (!found) {
                    // we store a NotFound member, so that we get a quick result for non existing members (e.g. operator_equal lookup)
                    info._type = PythonQtMemberInfo::NotFound;
                    _cachedMembers.insert(memberName, info);
                  }
                }
                return _cachedMembers.value(memberName);
              }
              void PythonQtClassInfo::recursiveCollectDecoratorObjects(QList<QObject*>& decoratorObjects) {
                QObject* deco = decorator();
                if (deco) {
                  decoratorObjects.append(deco);
                }
                foreach(const ParentClassInfo& info, _parentClasses) {
                  info._parent->recursiveCollectDecoratorObjects(decoratorObjects);
                }
              }
              void PythonQtClassInfo::recursiveCollectClassInfos(QList<PythonQtClassInfo*>& classInfoObjects) {
                classInfoObjects.append(this);
                foreach(const ParentClassInfo& info, _parentClasses) {
                  info._parent->recursiveCollectClassInfos(classInfoObjects);
                }
              }
              PythonQtSlotInfo* PythonQtClassInfo::findDecoratorSlots(const char* memberName, int memberNameLen, PythonQtSlotInfo* tail, bool &found, QHash<QByteArray, PythonQtMemberInfo>& memberCache, int upcastingOffset)
              {
                QListIterator<PythonQtSlotInfo*> it(_decoratorSlots);
                while (it.hasNext()) {
                  PythonQtSlotInfo* infoOrig = it.next();
                  const char* sigStart = infoOrig->metaMethod()->signature();
                  if (qstrncmp("static_", sigStart, 7)==0) {
                    sigStart += 7;
                    sigStart += findCharOffset(sigStart, '_')+1;
                  }
                  int offset = findCharOffset(sigStart, '(');
                  if (memberNameLen == offset && qstrncmp(memberName, sigStart, offset)==0) {
                    //make a copy, otherwise we will have trouble on overloads!
                    PythonQtSlotInfo* info = new PythonQtSlotInfo(*infoOrig);
                    info->setUpcastingOffset(upcastingOffset);
                    found = true;
                    if (tail) {
                      tail->setNextInfo(info);
                    } else {
                      PythonQtMemberInfo newInfo(info);
                      memberCache.insert(memberName, newInfo);
                    }
                    tail = info;
                  }
                }
                return tail;
              }
              void PythonQtClassInfo::listDecoratorSlotsFromDecoratorProvider(QStringList& list, bool metaOnly) {
                QObject* decoratorProvider = decorator();
                if (decoratorProvider) {
                  const QMetaObject* meta = decoratorProvider->metaObject();
                  int numMethods = meta->methodCount();
                  int startFrom = QObject::staticMetaObject.methodCount();
                  for (int i = startFrom; i < numMethods; i++) {
                    QMetaMethod m = meta->method(i);
                    if ((m.methodType() == QMetaMethod::Method ||
                         m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
                      const char* sigStart = m.signature();
                      bool isClassDeco = false;
                      if (qstrncmp(sigStart, "static_", 7)==0) {
                        // skip the static_classname_ part of the string
                        sigStart += 7 + 1 + strlen(className());
                        isClassDeco = true;
                      } else if (qstrncmp(sigStart, "new_", 4)==0) {
                        continue;
                      } else if (qstrncmp(sigStart, "delete_", 7)==0) {
                        continue;
                      }
                      // find the first '('
                      int offset = findCharOffset(sigStart, '(');
                      // XXX no checking is currently done if the slots have correct first argument or not...
                      if (!metaOnly || isClassDeco) {
                        list << QString::fromLatin1(sigStart, offset);
                      }
                    }
                  }
                }
                // look for global decorator slots
                QListIterator<PythonQtSlotInfo*> it(_decoratorSlots);
                while (it.hasNext()) {
                  PythonQtSlotInfo* slot = it.next();
                  if (metaOnly) {
                    if (slot->isClassDecorator()) {
                      QByteArray first = slot->slotName();
                      if (first.startsWith("static_")) {
                        int idx = first.indexOf('_');
                        idx = first.indexOf('_', idx+1);
                        first = first.mid(idx+1);
                      }
                      list << first;
                    }
                  } else {
                    list << slot->slotName();
                  }
                }
              }
              QStringList PythonQtClassInfo::propertyList()
              {
                QStringList l;
                if (_isQObject && _meta) {
                  int i;
                  int numProperties = _meta->propertyCount();
                  for (i = 0; i < numProperties; i++) {
                    QMetaProperty p = _meta->property(i);
                    l << QString(p.name());
                  }
                }
                return l;
              }
              QStringList PythonQtClassInfo::memberList(bool metaOnly)
              {
                decorator();
                QStringList l;
                QString h;
                if (_isQObject && _meta && !metaOnly) {
                  l = propertyList();
                }
                // normal slots of QObject (or wrapper QObject)
                if (!metaOnly && _meta) {
                  int numMethods = _meta->methodCount();
                  bool skipQObj = !_isQObject;
                  for (int i = skipQObj?QObject::staticMetaObject.methodCount():0; i < numMethods; i++) {
                    QMetaMethod m = _meta->method(i);
                    if ((m.methodType() == QMetaMethod::Method ||
                      m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
                      QByteArray signa(m.signature());
                      signa = signa.left(signa.indexOf('('));
                      l << signa;
                    }
                  }
                }
                {
                  // look for dynamic decorators in this class and in derived classes
                  QList<PythonQtClassInfo*> infos;
                  recursiveCollectClassInfos(infos);
                  foreach(PythonQtClassInfo* info, infos) {
                    info->listDecoratorSlotsFromDecoratorProvider(l, metaOnly);
                  }
                }
                // List enumerator keys...
                QList<const QMetaObject*> enumMetaObjects;
                if (_meta) {
                  enumMetaObjects << _meta;
                }
                // check enums in the class hierachy of CPP classes
                QList<QObject*> decoObjects;
                recursiveCollectDecoratorObjects(decoObjects);
                foreach(QObject* deco, decoObjects) {
                  enumMetaObjects << deco->metaObject();
                }
                foreach(const QMetaObject* meta, enumMetaObjects) {
                  for (int i = 0; i<meta->enumeratorCount(); i++) {
                    QMetaEnum e = meta->enumerator(i);
                    l << e.name();
                    // we do not want flags, they will cause our values to appear two times
                    if (e.isFlag()) continue;
                    for (int j=0; j < e.keyCount(); j++) {
                      l << QString(e.key(j));
                    }
                  }
                }
                return QSet<QString>::fromList(l).toList();
              }
              const char* PythonQtClassInfo::className()
              {
                return _wrappedClassName.constData();
              }
              void* PythonQtClassInfo::castTo(void* ptr, const char* classname)
              {
                if (ptr==NULL) {
                  return NULL;
                }
                if (_wrappedClassName == classname) {
                  return ptr;
                }
                foreach(const ParentClassInfo& info, _parentClasses) {
                  void* result = info._parent->castTo((char*)ptr + info._upcastingOffset, classname);
                  if (result) {
                    return result;
                  }
                }
                return NULL;
              }
              bool PythonQtClassInfo::inherits(const char* name)
              {
                if (_wrappedClassName == name) {
                  return true;
                }
                foreach(const ParentClassInfo& info, _parentClasses) {
                  if (info._parent->inherits(name)) {
                    return true;
                  }
                }
                return false;
              }
              bool PythonQtClassInfo::inherits(PythonQtClassInfo* classInfo)
              {
                if (classInfo == this) {
                  return true;
                }
                foreach(const ParentClassInfo& info, _parentClasses) {
                  if (info._parent->inherits(classInfo)) {
                    return true;
                  }
                }
                return false;
              }
              QString PythonQtClassInfo::help()
              {
                decorator();
                QString h;
                h += QString("--- ") + QString(className()) + QString(" ---\n");
                if (_isQObject) {
                  h += "Properties:\n";
                  int i;
                  int numProperties = _meta->propertyCount();
                  for (i = 0; i < numProperties; i++) {
                    QMetaProperty p = _meta->property(i);
                    h += QString(p.name()) + " (" + QString(p.typeName()) + " )\n";
                  }
                }
                if (constructors()) {
                  h += "Constructors:\n";
                  PythonQtSlotInfo* constr = constructors();
                  while (constr) {
                    h += constr->fullSignature() + "\n";
                    constr = constr->nextInfo();
                  }
                }
                h += "Slots:\n";
                h += "QString help()\n";
                h += "QString className()\n";
                if (_meta) {
                  int numMethods = _meta->methodCount();
                  for (int i = 0; i < numMethods; i++) {
                    QMetaMethod m = _meta->method(i);
                    if ((m.methodType() == QMetaMethod::Method ||
                      m.methodType() == QMetaMethod::Slot) && m.access() == QMetaMethod::Public) {
                      PythonQtSlotInfo slot(this, m, i);
                      h += slot.fullSignature()+ "\n";
                    }
                  }
                }
                // TODO xxx : decorators and enums from decorator() are missing...
                // maybe we can reuse memberlist()?
                if (_meta && _meta->enumeratorCount()) {
                  h += "Enums:\n";
                  for (int i = 0; i<_meta->enumeratorCount(); i++) {
                    QMetaEnum e = _meta->enumerator(i);
                    h += QString(e.name()) + " {";
                    for (int j=0; j < e.keyCount(); j++) {
                      if (j) { h+= ", "; }
                      h += e.key(j);
                    }
                    h += " }\n";
                  }
                }
                if (_isQObject && _meta) {
                  int numMethods = _meta->methodCount();
                  if (numMethods>0) {
                    h += "Signals:\n";
                    for (int i = 0; i < numMethods; i++) {
                      QMetaMethod m = _meta->method(i);
                      if (m.methodType() == QMetaMethod::Signal) {
                        h += QString(m.signature()) + "\n";
                      }
                    }
                  }
                }
                return h;
              }
              PythonQtSlotInfo* PythonQtClassInfo::constructors()
              {
                if (!_constructors) {
                  // force creation of lazy decorator, which will register the decorators
                  decorator();
                }
                return _constructors;
              }
              PythonQtSlotInfo* PythonQtClassInfo::destructor()
              {
                if (!_destructor) {
                  // force creation of lazy decorator, which will register the decorators
                  decorator();
                }
                return _destructor;
              }
              void PythonQtClassInfo::addConstructor(PythonQtSlotInfo* info)
              {
                PythonQtSlotInfo* prev = constructors();
                if (prev) {
                  info->setNextInfo(prev->nextInfo());
                  prev->setNextInfo(info);
                } else {
                  _constructors = info;
                }
              }
              void PythonQtClassInfo::addDecoratorSlot(PythonQtSlotInfo* info)
              {
                _decoratorSlots.append(info);
              }
              void PythonQtClassInfo::setDestructor(PythonQtSlotInfo* info)
              {
                if (_destructor) {
                  _destructor->deleteOverloadsAndThis();
                }
                _destructor = info;
              }
              void PythonQtClassInfo::setMetaObject(const QMetaObject* meta)
              {
                _meta = meta;
                clearCachedMembers();
              }
              QObject* PythonQtClassInfo::decorator()
              {
                if (!_decoratorProvider && _decoratorProviderCB) {
                  _decoratorProvider = (*_decoratorProviderCB)();
                  if (_decoratorProvider) {
                    _decoratorProvider->setParent(PythonQt::priv());
                    // setup enums early, since they might be needed by the constructor decorators:
                    if (!_enumsCreated) {
                      createEnumWrappers();
                    }
                    PythonQt::priv()->addDecorators(_decoratorProvider, PythonQtPrivate::ConstructorDecorator | PythonQtPrivate::DestructorDecorator);
                  }
                }
                // check if enums need to be created and create them if they are not yet created
                if (!_enumsCreated) {
                  createEnumWrappers();
                }
                return _decoratorProvider;
              }
              bool PythonQtClassInfo::hasOwnerMethodButNoOwner(void* object)
              {
                PythonQtMemberInfo info = member("hasOwner");
                if (info._type == PythonQtMemberInfo::Slot) {
                  void* obj = object;
                  bool result = false;
                  void* args[2];
                  args[0] = &result;
                  args[1] = &obj;
                  info._slot->decorator()->qt_metacall(QMetaObject::InvokeMetaMethod, info._slot->slotIndex(), args);
                  return !result;
                } else {
                  return false;
                }
              }
              void* PythonQtClassInfo::recursiveCastDownIfPossible(void* ptr, char** resultClassName)
              {
                if (!_polymorphicHandlers.isEmpty()) {
                  foreach(PythonQtPolymorphicHandlerCB* cb, _polymorphicHandlers) {
                    void* resultPtr = (*cb)(ptr, resultClassName);
                    if (resultPtr) {
                      return resultPtr;
                    }
                  }
                }
                foreach(const ParentClassInfo& info, _parentClasses) {
                  if (!info._parent->isQObject()) {
                    void* resultPtr = info._parent->recursiveCastDownIfPossible((char*)ptr + info._upcastingOffset, resultClassName);
                    if (resultPtr) {
                      return resultPtr;
                    }
                  }
                }
                return NULL;
              }
              void* PythonQtClassInfo::castDownIfPossible(void* ptr, PythonQtClassInfo** resultClassInfo)
              {
                char* className;
                // this would do downcasting recursively...
                // void* resultPtr = recursiveCastDownIfPossible(ptr, &className);
                // we only do downcasting on the base object, not on the whole inheritance tree...
                void* resultPtr = NULL;
                if (!_polymorphicHandlers.isEmpty()) {
                  foreach(PythonQtPolymorphicHandlerCB* cb, _polymorphicHandlers) {
                    resultPtr = (*cb)(ptr, &className);
                    if (resultPtr) {
                      break;
                    }
                  }
                }
                if (resultPtr) {
                  *resultClassInfo = PythonQt::priv()->getClassInfo(className);
                } else {
                  *resultClassInfo = this;
                  resultPtr = ptr;
                }
                return resultPtr;
              }
              PyObject* PythonQtClassInfo::findEnumWrapper(const QByteArray& name, PythonQtClassInfo* localScope, bool& isLocalEnum)
              {
                isLocalEnum = true;
                int scopePos = name.lastIndexOf("::");
                if (scopePos != -1) {
                  isLocalEnum = false;
                  // slit into scope and enum name
                  QByteArray enumScope = name.mid(0,scopePos);
                  QByteArray enumName = name.mid(scopePos+2);
                  PythonQtClassInfo* info = PythonQt::priv()->getClassInfo(enumScope);
                  if (info) {
                    return info->findEnumWrapper(enumName);
                  } else{
                    return NULL;
                  }
                }
                if (localScope) {
                  return localScope->findEnumWrapper(name);
                } else {
                  return NULL;
                }
              }
              void PythonQtClassInfo::createEnumWrappers(const QMetaObject* meta)
              {
                for (int i = meta->enumeratorOffset();i<meta->enumeratorCount();i++) {
                  QMetaEnum e = meta->enumerator(i);
                  PythonQtObjectPtr p;
-                 p.setNewRef(PythonQt::priv()->createNewPythonQtEnumWrapper(e.name(), _pythonQtClassWrapper));
+                 p.setNewRef(PythonQtPrivate::createNewPythonQtEnumWrapper(e.name(), _pythonQtClassWrapper));
                  _enumWrappers.append(p);
                }
              }
              void PythonQtClassInfo::createEnumWrappers()
              {
                if (!_enumsCreated) {
                  _enumsCreated = true;
                  if (_meta) {
                    createEnumWrappers(_meta);
                  }
                  if (decorator()) {
                    createEnumWrappers(decorator()->metaObject());
                  }
                  foreach(const ParentClassInfo& info, _parentClasses) {
                    info._parent->createEnumWrappers();
                  }
                }
              }
              PyObject* PythonQtClassInfo::findEnumWrapper(const char* name) {
+               // force enum creation
+               if (!_enumsCreated) {
+                 createEnumWrappers();
+               }
                foreach(const PythonQtObjectPtr& p, _enumWrappers) {
                  const char* className = ((PyTypeObject*)p.object())->tp_name;
                  if (qstrcmp(className, name)==0) {
                    return p.object();
                  }
                }
                foreach(const ParentClassInfo& info, _parentClasses) {
                  PyObject* p = info._parent->findEnumWrapper(name);
                  if (p) return p;
                }
                return NULL;
              }

src/PythonQtConversion.cpp +14 0

              /*
              *
              *  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    PythonQtConversion.cpp
              // \author  Florian Link
              // \author  Last changed by $Author: florian $
              // \date    2006-05
              */
              //----------------------------------------------------------------------------------
              #include "PythonQtConversion.h"
              #include "PythonQtVariants.h"
              #include <QDateTime>
              #include <QTime>
              #include <QDate>
              PythonQtValueStorage<qint64, 128>  PythonQtConv::global_valueStorage;
              PythonQtValueStorage<void*, 128>   PythonQtConv::global_ptrStorage;
              PythonQtValueStorage<QVariant, 32> PythonQtConv::global_variantStorage;
              QHash<int, PythonQtConvertMetaTypeToPythonCB*> PythonQtConv::_metaTypeToPythonConverters;
              QHash<int, PythonQtConvertPythonToMetaTypeCB*> PythonQtConv::_pythonToMetaTypeConverters;
              PyObject* PythonQtConv::GetPyBool(bool val)
              {
                PyObject* r = val?Py_True:Py_False;
                Py_INCREF(r);
                return r;
              }
              PyObject* PythonQtConv::ConvertQtValueToPython(const PythonQtMethodInfo::ParameterInfo& info, const void* data) {
+               // is it an enum value?
+               if (info.enumWrapper) {
+                 if (!info.isPointer) {
+                   return PythonQtPrivate::createEnumValueInstance(info.enumWrapper, *((unsigned int*)data));
+                 } else {
+                   // we do not support pointers to enums (who needs them?)
+                   Py_INCREF(Py_None);
+                   return Py_None;
+                 }
+               }
                if (info.typeId == QMetaType::Void) {
                  Py_INCREF(Py_None);
                  return Py_None;
                } else if (info.isPointer && (info.typeId == QMetaType::Char)) {
                  // a char ptr will probably be a null terminated string, so we support that:
                  return PyString_FromString(*((char**)data));
                } else if ((info.typeId == PythonQtMethodInfo::Unknown || info.typeId >= QMetaType::User) &&
                           info.name.startsWith("QList<")) {
                  // it is a QList template:
                  // (TODO: check what happens if this is a pointer type?!)
                  QByteArray innerType = info.name.mid(6,info.name.length()-7);
                  if (innerType.endsWith("*")) {
                    innerType.truncate(innerType.length()-1);
                    return ConvertQListOfPointerTypeToPythonList((QList<void*>*)data, innerType);
                  }
                }
                if (info.typeId >= QMetaType::User) {
                  // if a converter is registered, we use is:
                  PythonQtConvertMetaTypeToPythonCB* converter = _metaTypeToPythonConverters.value(info.typeId);
                  if (converter) {
                    return (*converter)(data, info.typeId);
                  }
                }
                // special handling did not match, so we convert the usual way (either pointer or value version):
                if (info.isPointer) {
                  // convert the pointer to a Python Object (we can handle ANY C++ object, in the worst case we just know the type and the pointer)
                  return PythonQt::priv()->wrapPtr(*((void**)data), info.name);
                } else {
                  // handle values that are not yet handled and not pointers
                  return ConvertQtValueToPythonInternal(info.typeId, data);
                }
              }
              PyObject* PythonQtConv::ConvertQtValueToPythonInternal(int type, const void* data) {
                switch (type) {
                case QMetaType::Void:
                  Py_INCREF(Py_None);
                  return Py_None;
                case QMetaType::Char:
                  return PyInt_FromLong(*((char*)data));
                case QMetaType::UChar:
                  return PyInt_FromLong(*((unsigned char*)data));
                case QMetaType::Short:
                  return PyInt_FromLong(*((short*)data));
                case QMetaType::UShort:
                  return PyInt_FromLong(*((unsigned short*)data));
                case QMetaType::Long:
                  return PyInt_FromLong(*((long*)data));
                case QMetaType::ULong:
                  // does not fit into simple int of python
                  return PyLong_FromUnsignedLong(*((unsigned long*)data));
                case QMetaType::Bool:
                  return PythonQtConv::GetPyBool(*((bool*)data));
                case QMetaType::Int:
                  return PyInt_FromLong(*((int*)data));
                case QMetaType::UInt:
                  return PyInt_FromLong(*((unsigned int*)data));
                case QMetaType::QChar:
                  return PyInt_FromLong(*((short*)data));
                case QMetaType::Float:
                  return PyFloat_FromDouble(*((float*)data));
                case QMetaType::Double:
                  return PyFloat_FromDouble(*((double*)data));
                case QMetaType::LongLong:
                  return PyLong_FromLongLong(*((qint64*)data));
                case QMetaType::ULongLong:
                  return PyLong_FromUnsignedLongLong(*((quint64*)data));
                case QMetaType::QByteArray: {
                  QByteArray* v = (QByteArray*) data;
                  return PyString_FromStringAndSize(*v, v->size());
                                            }
                case QMetaType::QVariantMap:
                  return PythonQtConv::QVariantMapToPyObject(*((QVariantMap*)data));
                case QMetaType::QVariantList:
                  return PythonQtConv::QVariantListToPyObject(*((QVariantList*)data));
                case QMetaType::QString:
                  return PythonQtConv::QStringToPyObject(*((QString*)data));
                case QMetaType::QStringList:
                  return PythonQtConv::QStringListToPyObject(*((QStringList*)data));
                case PythonQtMethodInfo::Variant:
                  return PythonQtConv::QVariantToPyObject(*((QVariant*)data));
                case QMetaType::QObjectStar:
                case QMetaType::QWidgetStar:
                  return PythonQt::priv()->wrapQObject(*((QObject**)data));
                default:
                  if (PythonQt::priv()->isPythonQtObjectPtrMetaId(type)) {
                    // special case, it is a PythonQtObjectPtr which contains a PyObject, take it directly:
                    PyObject* o = ((PythonQtObjectPtr*)data)->object();
                    Py_INCREF(o);
                    return o;
                  } else {
                    if (type > 0) {
                      // if the type is known, we can construct it via QMetaType::construct
                      void* newCPPObject = QMetaType::construct(type, data);
                      // XXX this could be optimized by using metatypeid directly
                      PythonQtInstanceWrapper* wrap = (PythonQtInstanceWrapper*)PythonQt::priv()->wrapPtr(newCPPObject, QMetaType::typeName(type));
                      wrap->_ownedByPythonQt = true;
                      wrap->_useQMetaTypeDestroy = true;
                      return (PyObject*)wrap;
                    }
                    std::cerr << "Unknown type that can not be converted to Python: " << type << ", in " << __FILE__ << ":" << __LINE__ << std::endl;
                  }
              }
              Py_INCREF(Py_None);
              return Py_None;
               }
               void* PythonQtConv::CreateQtReturnValue(const PythonQtMethodInfo::ParameterInfo& info) {
                 void* ptr = NULL;
                 if (info.isPointer) {
                   PythonQtValueStorage_ADD_VALUE(global_ptrStorage, void*, NULL, ptr);
+                } else if (info.enumWrapper) {
+                  // create enum return value
+                  PythonQtValueStorage_ADD_VALUE(PythonQtConv::global_valueStorage, long, 0, ptr);
                 } else {
                   switch (info.typeId) {
                   case QMetaType::Char:
                   case QMetaType::UChar:
                   case QMetaType::Short:
                   case QMetaType::UShort:
                   case QMetaType::Long:
                   case QMetaType::ULong:
                   case QMetaType::Bool:
                   case QMetaType::Int:
                   case QMetaType::UInt:
                   case QMetaType::QChar:
                   case QMetaType::Float:
                   case QMetaType::Double:
                     PythonQtValueStorage_ADD_VALUE(global_valueStorage, long, 0, ptr);
                     break;
                   case PythonQtMethodInfo::Variant:
                     PythonQtValueStorage_ADD_VALUE(global_variantStorage, QVariant, 0, ptr);
                     // return the ptr to the variant
                     break;
                   default:
                     if (info.typeId == PythonQtMethodInfo::Unknown) {
                       // check if we have a QList of pointers, which we can circumvent with a QList<void*>
                       if (info.name.startsWith("QList<")) {
                         QByteArray innerType = info.name.mid(6,info.name.length()-7);
                         if (innerType.endsWith("*")) {
                           static int id = QMetaType::type("QList<void*>");
                           PythonQtValueStorage_ADD_VALUE(global_variantStorage, QVariant, QVariant::Type(id), ptr);
                           // return the constData pointer that will be filled with the result value later on
                           ptr = (void*)((QVariant*)ptr)->constData();
                         }
                       }
                     }
                    if (!ptr && info.typeId!=PythonQtMethodInfo::Unknown) {
                       // everything else is stored in a QVariant, if we know the meta type...
                       PythonQtValueStorage_ADD_VALUE(global_variantStorage, QVariant, QVariant::Type(info.typeId), ptr);
                       // return the constData pointer that will be filled with the result value later on
                       ptr = (void*)((QVariant*)ptr)->constData();
                     }
                   }
                 }
                 return ptr;
               }
               void* PythonQtConv::castWrapperTo(PythonQtInstanceWrapper* wrapper, const QByteArray& className, bool& ok)
               {
                 void* object;
                 if (wrapper->classInfo()->isCPPWrapper()) {
                   object = wrapper->_wrappedPtr;
                 } else {
                   QObject* tmp = wrapper->_obj;
                   object = tmp;
                 }
                 if (object) {
                   // if we can be upcasted to the given name, we pass the casted pointer in:
                   object = wrapper->classInfo()->castTo(object, className);
                   ok = object!=NULL;
                 } else {
                   // if it is a NULL ptr, we need to check if it inherits, so that we might pass the NULL ptr
                   ok = wrapper->classInfo()->inherits(className);
                 }
                 return object;
               }
               void* PythonQtConv::ConvertPythonToQt(const PythonQtMethodInfo::ParameterInfo& info, PyObject* obj, bool strict, PythonQtClassInfo* /*classInfo*/, void* alreadyAllocatedCPPObject)
               {
                 bool ok;
                 void* ptr = NULL;
                 if (PyObject_TypeCheck(obj, &PythonQtInstanceWrapper_Type) && info.typeId != PythonQtMethodInfo::Variant) {
                   // if we have a Qt wrapper object and if we do not need a QVariant, we do the following:
                   // (the Variant case is handled below in a switch)
                   // a C++ wrapper (can be passed as pointer or reference)
                   PythonQtInstanceWrapper* wrap = (PythonQtInstanceWrapper*)obj;
                   bool ok;
                   void* object = castWrapperTo(wrap, info.name, ok);
                   if (ok) {
                     if (info.isPointer) {
                       // store the wrapped pointer in an extra pointer and let ptr point to the extra pointer
                       PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_ptrStorage, void*, object, ptr);
                     } else {
                       // store the wrapped pointer directly, since we are a reference
                       ptr = object;
                     }
                   } else {
                    // not matching
                   }
                 } else if (info.isPointer) {
                   // a pointer
                   if (info.typeId == QMetaType::Char || info.typeId == QMetaType::UChar)
                   {
                     QString str = PyObjGetString(obj, strict, ok);
                     if (ok) {
                       void* ptr2 = NULL;
                       PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_variantStorage, QVariant, QVariant(str.toUtf8()), ptr2);
                       PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_ptrStorage, void*, (((QByteArray*)((QVariant*)ptr2)->constData())->data()), ptr);
                     }
                   } else if (info.name == "PyObject") {
                     // handle low level PyObject directly
                     PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_ptrStorage, void*, obj, ptr);
                   } else if (obj == Py_None) {
                     // None is treated as a NULL ptr
                     PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_ptrStorage, void*, NULL, ptr);
                   } else {
                     // if we are not strict, we try if we are passed a 0 integer
                     if (!strict) {
                       bool ok;
                       int value = PyObjGetInt(obj, true, ok);
                       if (ok && value==0) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_ptrStorage, void*, NULL, ptr);
                       }
                     }
                   }
                 } else {
                   // not a pointer
                   switch (info.typeId) {
                   case QMetaType::Char:
                     {
                       int val = PyObjGetInt(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, char, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::UChar:
                     {
                       int val = PyObjGetInt(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, unsigned char, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::Short:
                     {
                       int val = PyObjGetInt(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, short, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::UShort:
                     {
                       int val = PyObjGetInt(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, unsigned short, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::Long:
                     {
                       long val = (long)PyObjGetLongLong(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, long, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::ULong:
                     {
                       unsigned long val = (unsigned long)PyObjGetLongLong(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, unsigned long, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::Bool:
                     {
                       bool val = PyObjGetBool(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, bool, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::Int:
                     {
                       int val = PyObjGetInt(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, int, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::UInt:
                     {
                       unsigned int val = (unsigned int)PyObjGetLongLong(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, unsigned int, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::QChar:
                     {
                       int val = PyObjGetInt(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, short, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::Float:
                     {
                       float val = (float)PyObjGetDouble(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, float, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::Double:
                     {
                       double val = (double)PyObjGetDouble(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, double, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::LongLong:
                     {
                       qint64 val = PyObjGetLongLong(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, qint64, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::ULongLong:
                     {
                       quint64 val = PyObjGetULongLong(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, quint64, val, ptr);
                       }
                     }
                     break;
                   case QMetaType::QByteArray:
                     {
                       QByteArray bytes = PyObjGetBytes(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_variantStorage, QVariant, QVariant(bytes), ptr);
                         ptr = (void*)((QVariant*)ptr)->constData();
                       }
                     }
                     break;
                   case QMetaType::QString:
                     {
                       QString str = PyObjGetString(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_variantStorage, QVariant, QVariant(str), ptr);
                         ptr = (void*)((QVariant*)ptr)->constData();
                       }
                     }
                     break;
                   case QMetaType::QStringList:
                     {
                       QStringList l = PyObjToStringList(obj, strict, ok);
                       if (ok) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_variantStorage, QVariant, QVariant(l), ptr);
                         ptr = (void*)((QVariant*)ptr)->constData();
                       }
                     }
                     break;
                   case PythonQtMethodInfo::Variant:
                     {
                       QVariant v = PyObjToQVariant(obj);
                       if (v.isValid()) {
                         PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_variantStorage, QVariant, v, ptr);
                       }
                     }
                     break;
                     default:
                     {
                       // check for enum case
                       if (info.enumWrapper) {
                         unsigned int val;
                         if ((PyObject*)obj->ob_type == info.enumWrapper) {
                           // we have a direct enum type match:
                           val = PyInt_AS_LONG(obj);
                           ok = true;
                         } else {
                           // we try to get an integer, and in strict mode, it may not be a derived int class, so that no other enum can be taken as an int
                           val = (unsigned int)PyObjGetLongLong(obj, strict, ok);
                         }
                         if (ok) {
                           PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_valueStorage, unsigned int, val, ptr);
                           return ptr;
                         } else {
                           return NULL;
                         }
                       }
                       if (info.typeId == PythonQtMethodInfo::Unknown || info.typeId >= QMetaType::User) {
                         // check for QList<AnyPtr*> case, where we will use a QList<void*> QVariant
                         if (info.name.startsWith("QList<")) {
                           QByteArray innerType = info.name.mid(6,info.name.length()-7);
                           if (innerType.endsWith("*")) {
                             innerType.truncate(innerType.length()-1);
                             static int id = QMetaType::type("QList<void*>");
                             if (!alreadyAllocatedCPPObject) {
                               PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_variantStorage, QVariant, QVariant::Type(id), ptr);
                               ptr = (void*)((QVariant*)ptr)->constData();
                             } else {
                               ptr = alreadyAllocatedCPPObject;
                             }
                             ok = ConvertPythonListToQListOfPointerType(obj, (QList<void*>*)ptr, innerType, strict);
                             if (ok) {
                               return ptr;
                             } else {
                               return NULL;
                             }
                           }
                         }
                       }
                       // We only do this for registered type > QMetaType::User for performance reasons.
                       if (info.typeId >= QMetaType::User) {
                         // Maybe we have a special converter that is registered for that type:
                         PythonQtConvertPythonToMetaTypeCB* converter = _pythonToMetaTypeConverters.value(info.typeId);
                         if (converter) {
                           if (!alreadyAllocatedCPPObject) {
                             // create a new empty variant of concrete type:
                             PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_variantStorage, QVariant, QVariant::Type(info.typeId), ptr);
                             ptr = (void*)((QVariant*)ptr)->constData();
                           } else {
                             ptr = alreadyAllocatedCPPObject;
                           }
                           // now call the converter, passing the internal object of the variant
                           ok = (*converter)(obj, ptr, info.typeId, strict);
                           if (ok) {
                             return ptr;
                           } else {
                             return NULL;
                           }
                         }
                       }
                       // if no type id is available, conversion to a QVariant makes no sense/is not possible
                       if (info.typeId != PythonQtMethodInfo::Unknown) {
                         // for all other types, we use the same qvariant conversion and pass out the constData of the variant:
                         QVariant v = PyObjToQVariant(obj, info.typeId);
                         if (v.isValid()) {
                           PythonQtValueStorage_ADD_VALUE_IF_NEEDED(alreadyAllocatedCPPObject,global_variantStorage, QVariant, v, ptr);
                           ptr = (void*)((QVariant*)ptr)->constData();
                         }
                       }
                     }
                  }
                }
                return ptr;
              }
              QStringList PythonQtConv::PyObjToStringList(PyObject* val, bool strict, bool& ok) {
                QStringList v;
                ok = false;
                // if we are strict, we do not want to convert a string to a stringlist
                // (strings in python are detected to be sequences)
                if (strict &&
                  (val->ob_type == &PyString_Type ||
                  PyUnicode_Check(val))) {
                  ok = false;
                  return v;
                }
                if (PySequence_Check(val)) {
                  int count = PySequence_Size(val);
                  for (int i = 0;i<count;i++) {
                    PyObject* value = PySequence_GetItem(val,i);
                    v.append(PyObjGetString(value,false,ok));
                  }
                  ok = true;
                }
                return v;
              }
              QString PythonQtConv::PyObjGetRepresentation(PyObject* val)
              {
                QString r;
                PyObject* str =  PyObject_Repr(val);
                if (str) {
                  r = QString(PyString_AS_STRING(str));
                  Py_DECREF(str);
                }
                return r;
              }
              QString PythonQtConv::PyObjGetString(PyObject* val, bool strict, bool& ok) {
                QString r;
                ok = true;
                if (val->ob_type == &PyString_Type) {
                  r = QString(PyString_AS_STRING(val));
                } else if (PyUnicode_Check(val)) {
              #ifdef WIN32
                  r = QString::fromUtf16(PyUnicode_AS_UNICODE(val));
              #else
                  PyObject *ptmp = PyUnicode_AsUTF8String(val);
                  if(ptmp) {
                    r = QString::fromUtf8(PyString_AS_STRING(ptmp));
                    Py_DECREF(ptmp);
                  }
              #endif
                } else if (!strict) {
                  // EXTRA: could also use _Unicode, but why should we?
                  PyObject* str =  PyObject_Str(val);
                  if (str) {
                    r = QString(PyString_AS_STRING(str));
                    Py_DECREF(str);
                  } else {
                    ok = false;
                  }
                } else {
                  ok = false;
                }
                return r;
              }
              QByteArray PythonQtConv::PyObjGetBytes(PyObject* val, bool /*strict*/, bool& ok) {
                QByteArray r;
                ok = true;
                if (val->ob_type == &PyString_Type) {
                  long size = PyString_GET_SIZE(val);
                  r = QByteArray(PyString_AS_STRING(val), size);
                } else {
                  ok = false;
                }
                return r;
              }
              bool PythonQtConv::PyObjGetBool(PyObject* val, bool strict, bool &ok) {
                bool d = false;
                ok = false;
                if (val == Py_False) {
                  d = false;
                  ok = true;
                } else if (val == Py_True) {
                  d = true;
                  ok = true;
                } else if (!strict) {
                  d = PyObjGetInt(val, false, ok)!=0;
                  ok = true;
                }
                return d;
              }
              int PythonQtConv::PyObjGetInt(PyObject* val, bool strict, bool &ok) {
                int d = 0;
                ok = true;
                if (val->ob_type == &PyInt_Type) {
                  d = PyInt_AS_LONG(val);
                } else if (!strict) {
                  if (PyObject_TypeCheck(val, &PyInt_Type)) {
                    // support for derived int classes, e.g. for our enums
                    d = PyInt_AS_LONG(val);
                  } else if (val->ob_type == &PyFloat_Type) {
                    d = floor(PyFloat_AS_DOUBLE(val));
                  } else if (val->ob_type == &PyLong_Type) {
                    // handle error on overflow!
                    d = PyLong_AsLong(val);
                  } else if (val == Py_False) {
                    d = 0;
                  } else if (val == Py_True) {
                    d = 1;
                  } else {
                    ok = false;
                  }
                } else {
                  ok = false;
                }
                return d;
              }
              qint64 PythonQtConv::PyObjGetLongLong(PyObject* val, bool strict, bool &ok) {
                qint64 d = 0;
                ok = true;
                if (val->ob_type == &PyInt_Type) {
                  d = PyInt_AS_LONG(val);
                } else if (val->ob_type == &PyLong_Type) {
                  d = PyLong_AsLongLong(val);
                } else if (!strict) {
                  if (PyObject_TypeCheck(val, &PyInt_Type)) {
                    // support for derived int classes, e.g. for our enums
                    d = PyInt_AS_LONG(val);
                  } else if (val->ob_type == &PyFloat_Type) {
                    d = floor(PyFloat_AS_DOUBLE(val));
                  } else if (val == Py_False) {
                    d = 0;
                  } else if (val == Py_True) {
                    d = 1;
                  } else {
                    ok = false;
                  }
                } else {
                  ok = false;
                }
                return d;
              }
              quint64 PythonQtConv::PyObjGetULongLong(PyObject* val, bool strict, bool &ok) {
                quint64 d = 0;
                ok = true;
                if (PyObject_TypeCheck(val, &PyInt_Type)) {
                  d = PyInt_AS_LONG(val);
                } else if (val->ob_type == &PyLong_Type) {
                  d = PyLong_AsLongLong(val);
                } else if (!strict) {
                  if (PyObject_TypeCheck(val, &PyInt_Type)) {
                    // support for derived int classes, e.g. for our enums
                    d = PyInt_AS_LONG(val);
                  } else if (val->ob_type == &PyFloat_Type) {
                    d = floor(PyFloat_AS_DOUBLE(val));
                  } else if (val == Py_False) {
                    d = 0;
                  } else if (val == Py_True) {
                    d = 1;
                  } else {
                    ok = false;
                  }
                } else {
                  ok = false;
                }
                return d;
              }
              double PythonQtConv::PyObjGetDouble(PyObject* val, bool strict, bool &ok) {
                double d = 0;
                ok = true;
                if (val->ob_type == &PyFloat_Type) {
                  d = PyFloat_AS_DOUBLE(val);
                } else if (!strict) {
                  if (PyObject_TypeCheck(val, &PyInt_Type)) {
                    d = PyInt_AS_LONG(val);
                  } else if (val->ob_type == &PyLong_Type) {
                    d = PyLong_AsLong(val);
                  } else if (val == Py_False) {
                    d = 0;
                  } else if (val == Py_True) {
                    d = 1;
                  } else {
                    ok = false;
                  }
                } else {
                  ok = false;
                }
                return d;
              }
              QVariant PythonQtConv::PyObjToQVariant(PyObject* val, int type)
              {
                QVariant v;
                bool ok = true;
                if (type==-1) {
                  // no special type requested
                  if (val->ob_type==&PyString_Type || val->ob_type==&PyUnicode_Type) {
                    type = QVariant::String;
                  } else if (PyObject_TypeCheck(val, &PyInt_Type)) {
                    type = QVariant::Int;
                  } else if (val->ob_type==&PyLong_Type) {
                    type = QVariant::LongLong;
                  } else if (val->ob_type==&PyFloat_Type) {
                    type = QVariant::Double;
                  } else if (val == Py_False || val == Py_True) {
                    type = QVariant::Bool;
                  } else if (PyObject_TypeCheck(val, &PythonQtInstanceWrapper_Type)) {
                    PythonQtInstanceWrapper* wrap = (PythonQtInstanceWrapper*)val;
                    // c++ wrapper, check if the class names of the c++ objects match
                    if (wrap->classInfo()->isCPPWrapper()) {
                      if (wrap->classInfo()->metaTypeId()>0) {
                        // construct a new variant from the C++ object if it has a meta type (this will COPY the object!)
                        v = QVariant(wrap->classInfo()->metaTypeId(), wrap->_wrappedPtr);
                      } else {
                        // TODOXXX we could as well check if there is a registered meta type for "classname*", so that we may pass
                        // the pointer here...
                        // is this worth anything? we loose the knowledge of the cpp object type
                        v = qVariantFromValue(wrap->_wrappedPtr);
                      }
                    } else {
                      // this gives us a QObject pointer
                      QObject* myObject = wrap->_obj;
                      v = qVariantFromValue(myObject);
                    }
                    return v;
                  } else if (val->ob_type==&PyDict_Type) {
                    type = QVariant::Map;
                  } else if (val->ob_type==&PyList_Type || val->ob_type==&PyTuple_Type || PySequence_Check(val)) {
                    type = QVariant::List;
                  } else if (val == Py_None) {
                    // none is invalid
                    type = QVariant::Invalid;
                  } else {
                    // this used to be:
                    // type = QVariant::String;
                    // but now we want to transport the Python Objects directly:
                    PythonQtObjectPtr o(val);
                    v = qVariantFromValue(o);
                    return v;
                  }
                }
                // special type request:
                switch (type) {
                case QVariant::Invalid:
                  return v;
                  break;
                case QVariant::Int:
                  {
                    int d = PyObjGetInt(val, false, ok);
                    if (ok) return QVariant(d);
                  }
                  break;
                case QVariant::UInt:
                  {
                    int d = PyObjGetInt(val, false,ok);
                    if (ok) v = QVariant((unsigned int)d);
                  }
                  break;
                case QVariant::Bool:
                  {
                    int d = PyObjGetBool(val,false,ok);
                    if (ok) v =  QVariant((bool)(d!=0));
                  }
                  break;
                case QVariant::Double:
                  {
                    double d = PyObjGetDouble(val,false,ok);
                    if (ok) v =  QVariant(d);
                    break;
                  }
                case QMetaType::Float:
                  {
                    float d = (float) PyObjGetDouble(val,false,ok);
                    if (ok) v =  qVariantFromValue(d);
                    break;
                  }
                case QMetaType::Long:
                  {
                    long d = (long) PyObjGetLongLong(val,false,ok);
                    if (ok) v =  qVariantFromValue(d);
                    break;
                  }
                case QMetaType::ULong:
                  {
                    unsigned long d = (unsigned long) PyObjGetLongLong(val,false,ok);
                    if (ok) v =  qVariantFromValue(d);
                    break;
                  }
                case QMetaType::Short:
                  {
                    short d = (short) PyObjGetInt(val,false,ok);
                    if (ok) v =  qVariantFromValue(d);
                    break;
                  }
                case QMetaType::UShort:
                  {
                    unsigned short d = (unsigned short) PyObjGetInt(val,false,ok);
                    if (ok) v =  qVariantFromValue(d);
                    break;
                  }
                case QMetaType::Char:
                  {
                    char d = (char) PyObjGetInt(val,false,ok);
                    if (ok) v =  qVariantFromValue(d);
                    break;
                  }
                case QMetaType::UChar:
                  {
                    unsigned char d = (unsigned char) PyObjGetInt(val,false,ok);
                    if (ok) v =  qVariantFromValue(d);
                    break;
                  }
                case QVariant::ByteArray:
                case QVariant::String:
                  {
                    bool ok;
                    v = QVariant(PyObjGetString(val, false, ok));
                  }
                  break;
                  // these are important for MeVisLab
                case QVariant::Map:
                  {
                    if (PyMapping_Check(val)) {
                      QMap<QString,QVariant> map;
                      PyObject* items = PyMapping_Items(val);
                      if (items) {
                        int count = PyList_Size(items);
                        PyObject* value;
                        PyObject* key;
                        PyObject* tuple;
                        for (int i = 0;i<count;i++) {
                          tuple = PyList_GetItem(items,i);
                          key = PyTuple_GetItem(tuple, 0);
                          value = PyTuple_GetItem(tuple, 1);
                          map.insert(PyObjGetString(key), PyObjToQVariant(value,-1));
                        }
                        Py_DECREF(items);
                        v = map;
                      }
                    }
                  }
                  break;
                case QVariant::List:
                  if (PySequence_Check(val)) {
                    QVariantList list;
                    int count = PySequence_Size(val);
                    PyObject* value;
                    for (int i = 0;i<count;i++) {
                      value = PySequence_GetItem(val,i);
                      list.append(PyObjToQVariant(value, -1));
                    }
                    v = list;
                  }
                  break;
                case QVariant::StringList:
                  {
                    bool ok;
                    QStringList l = PyObjToStringList(val, false, ok);
                    if (ok) {
                      v = l;
                    }
                  }
                  break;
                default:
                  if (PyObject_TypeCheck(val, &PythonQtInstanceWrapper_Type)) {
                    PythonQtInstanceWrapper* wrap = (PythonQtInstanceWrapper*)val;
                    if (wrap->classInfo()->isCPPWrapper() && wrap->classInfo()->metaTypeId() == type) {
                      // construct a new variant from the C++ object if it has the same meta type
                      v = QVariant(type, wrap->_wrappedPtr);
                    } else {
                      v = QVariant();
                    }
                  } else {
                    v = QVariant();
                  }
                }
                return v;
              }
              PyObject* PythonQtConv::QStringToPyObject(const QString& str)
              {
                if (str.isNull()) {
                  return PyString_FromString("");
                } else {
              #ifdef WIN32
                  //    return PyString_FromString(str.toLatin1().data());
                  return PyUnicode_FromUnicode(str.utf16(), str.length());
              #else
                  return PyUnicode_DecodeUTF16((const char*)str.utf16(), str.length()*2, NULL, NULL);
              #endif
                }
              }
              PyObject* PythonQtConv::QStringListToPyObject(const QStringList& list)
              {
                PyObject* result = PyTuple_New(list.count());
                int i = 0;
                QString str;
                foreach (str, list) {
                  PyTuple_SET_ITEM(result, i, PythonQtConv::QStringToPyObject(str));
                  i++;
                }
                // why is the error state bad after this?
                PyErr_Clear();
                return result;
              }
              PyObject* PythonQtConv::QStringListToPyList(const QStringList& list)
              {
                PyObject* result = PyList_New(list.count());
                int i = 0;
                for (QStringList::ConstIterator it = list.begin(); it!=list.end(); ++it) {
                  PyList_SET_ITEM(result, i, PythonQtConv::QStringToPyObject(*it));
                  i++;
                }
                return result;
              }
              PyObject* PythonQtConv::QVariantToPyObject(const QVariant& v)
              {
                return ConvertQtValueToPythonInternal(v.userType(), (void*)v.constData());
              }
              PyObject* PythonQtConv::QVariantMapToPyObject(const QVariantMap& m) {
                PyObject* result = PyDict_New();
                QVariantMap::const_iterator t = m.constBegin();
                PyObject* key;
                PyObject* val;
                for (;t!=m.end();t++) {
                  key = QStringToPyObject(t.key());
                  val = QVariantToPyObject(t.value());
                  PyDict_SetItem(result, key, val);
                  Py_DECREF(key);
                  Py_DECREF(val);
                }
                return result;
              }
              PyObject* PythonQtConv::QVariantListToPyObject(const QVariantList& l) {
                PyObject* result = PyTuple_New(l.count());
                int i = 0;
                QVariant v;
                foreach (v, l) {
                  PyTuple_SET_ITEM(result, i, PythonQtConv::QVariantToPyObject(v));
                  i++;
                }
                // why is the error state bad after this?
                PyErr_Clear();
                return result;
              }
              PyObject* PythonQtConv::ConvertQListOfPointerTypeToPythonList(QList<void*>* list, const QByteArray& typeName)
              {
                PyObject* result = PyTuple_New(list->count());
                int i = 0;
                foreach (void* value, *list) {
                  PyTuple_SET_ITEM(result, i, PythonQt::priv()->wrapPtr(value, typeName));
                  i++;
                }
                return result;
              }
              bool PythonQtConv::ConvertPythonListToQListOfPointerType(PyObject* obj, QList<void*>* list, const QByteArray& type, bool /*strict*/)
              {
                bool result = false;
                if (PySequence_Check(obj)) {
                  result = true;
                  int count = PySequence_Size(obj);
                  PyObject* value;
                  for (int i = 0;i<count;i++) {
                    value = PySequence_GetItem(obj,i);
                    if (PyObject_TypeCheck(value, &PythonQtInstanceWrapper_Type)) {
                      PythonQtInstanceWrapper* wrap = (PythonQtInstanceWrapper*)value;
                      bool ok;
                      void* object = castWrapperTo(wrap, type, ok);
                      if (ok) {
                        list->append(object);
                      } else {
                        result = false;
                        break;
                      }
                    }
                  }
                }
                return result;
              }
              int PythonQtConv::getInnerTemplateMetaType(const QByteArray& typeName)
              {
                int idx = typeName.indexOf("<");
                if (idx>0) {
                  int idx2 = typeName.indexOf(">");
                  if (idx2>0) {
                    QByteArray innerType = typeName.mid(idx+1,idx2-idx-1);
                    return QMetaType::type(innerType.constData());
                  }
                }
                return QMetaType::Void;
              }
              QString PythonQtConv::qVariantToString(const QVariant& v) {
                return CPPObjectToString(v.userType(), v.constData());
              }
              QString PythonQtConv::CPPObjectToString(int type, const void* data) {
                QString r;
                switch (type) {
                  case QVariant::Size: {
                    const QSize* s = static_cast<const QSize*>(data);
                    r = QString::number(s->width()) + ", " + QString::number(s->height());
                    }
                    break;
                  case QVariant::SizeF: {
                    const QSizeF* s = static_cast<const QSizeF*>(data);
                    r = QString::number(s->width()) + ", " + QString::number(s->height());
                    }
                    break;
                  case QVariant::Point: {
                    const QPoint* s = static_cast<const QPoint*>(data);
                    r = QString::number(s->x()) + ", " + QString::number(s->y());
                    }
                    break;
                  case QVariant::PointF: {
                    const QPointF* s = static_cast<const QPointF*>(data);
                    r = QString::number(s->x()) + ", " + QString::number(s->y());
                    }
                    break;
                  case QVariant::Rect: {
                    const QRect* s = static_cast<const QRect*>(data);
                    r = QString::number(s->x()) + ", " + QString::number(s->y());
                    r += ", " + QString::number(s->width()) + ", " + QString::number(s->height());
                    }
                    break;
                  case QVariant::RectF: {
                    const QRectF* s = static_cast<const QRectF*>(data);
                    r = QString::number(s->x()) + ", " + QString::number(s->y());
                    r += ", " + QString::number(s->width()) + ", " + QString::number(s->height());
                    }
                    break;
                  case QVariant::Date: {
                    const QDate* s = static_cast<const QDate*>(data);
                    r = s->toString(Qt::ISODate);
                    }
                    break;
                  case QVariant::DateTime: {
                    const QDateTime* s = static_cast<const QDateTime*>(data);
                    r = s->toString(Qt::ISODate);
                    }
                    break;
                  case QVariant::Time: {
                    const QTime* s = static_cast<const QTime*>(data);
                    r = s->toString(Qt::ISODate);
                  }
                    break;
                  case QVariant::Pixmap:
                  {
                    const QPixmap* s = static_cast<const QPixmap*>(data);
                    r = QString("Pixmap ") + QString::number(s->width()) + ", " + QString::number(s->height());
                  }
                    break;
                  case QVariant::Image:
                  {
                    const QImage* s = static_cast<const QImage*>(data);
                    r = QString("Image ") + QString::number(s->width()) + ", " + QString::number(s->height());
                  }
                    break;
                  case QVariant::Url:
                    {
                      const QUrl* s = static_cast<const QUrl*>(data);
                      r = s->toString();
                    }
                    break;
                    //TODO: add more printing for other variant types
                  default:
                    // this creates a copy, but that should not be expensive for typical simple variants
                    // (but we do not want to do this for our won user types!
                    if (type>0 && type < (int)QVariant::UserType) {
                      QVariant v(type, data);
                      r = v.toString();
                    }
                }
                return r;
              }

src/PythonQtSlot.cpp 0 -13

              /*
              *
              *  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    PythonQtSlot.cpp
              // \author  Florian Link
              // \author  Last changed by $Author: florian $
              // \date    2006-05
              */
              //----------------------------------------------------------------------------------
              #include "PythonQt.h"
              #include "PythonQtSlot.h"
              #include "PythonQtInstanceWrapper.h"
              #include "PythonQtClassInfo.h"
              #include "PythonQtMisc.h"
              #include "PythonQtConversion.h"
              #include <iostream>
              #define PYTHONQT_MAX_ARGS 32
              bool PythonQtCallSlot(PythonQtClassInfo* classInfo, QObject* objectToCall, PyObject* args, bool strict, PythonQtSlotInfo* info, void* firstArgument, PyObject** pythonReturnValue, void** directReturnValuePointer)
              {
                static unsigned int recursiveEntry = 0;
                if (directReturnValuePointer) {
                  *directReturnValuePointer = NULL;
                }
                // store the current storage position, so that we can get back to this state after a slot is called
                // (do this locally, so that we have all positions on the stack
                PythonQtValueStoragePosition globalValueStoragePos;
                PythonQtValueStoragePosition globalPtrStoragePos;
                PythonQtValueStoragePosition globalVariantStoragePos;
                PythonQtConv::global_valueStorage.getPos(globalValueStoragePos);
                PythonQtConv::global_ptrStorage.getPos(globalPtrStoragePos);
                PythonQtConv::global_variantStorage.getPos(globalVariantStoragePos);
                recursiveEntry++;
                // the arguments that are passed to qt_metacall
                void* argList[PYTHONQT_MAX_ARGS];
                PyObject* result = NULL;
                int argc = info->parameterCount();
                const QList<PythonQtSlotInfo::ParameterInfo>& params = info->parameters();
                const PythonQtSlotInfo::ParameterInfo& returnValueParam = params.at(0);
                // set return argument to NULL
                argList[0] = NULL;
                bool ok = true;
                bool skipFirst = false;
                if (info->isInstanceDecorator()) {
                  skipFirst = true;
                  // for decorators on CPP objects, we take the cpp ptr, for QObjects we take the QObject pointer
                  void* arg1 = firstArgument;
                  if (!arg1) {
                    arg1 = objectToCall;
                  }
                  if (arg1) {
                    // upcast to correct parent class
                    arg1 = ((char*)arg1)+info->upcastingOffset();
                  }
                  argList[1] = &arg1;
                  if (ok) {
                    for (int i = 2; i<argc && ok; i++) {
                      const PythonQtSlotInfo::ParameterInfo& param = params.at(i);
                      //std::cout << param.name.data() << " " << param.typeId << (param.isPointer?"*":"") << (param.isConst?" const":"") << std::endl;
                      argList[i] = PythonQtConv::ConvertPythonToQt(param, PyTuple_GET_ITEM(args, i-2), strict, classInfo);
                      if (argList[i]==NULL) {
                        ok = false;
                        break;
                      }
                    }
                  }
                } else {
                  for (int i = 1; i<argc && ok; i++) {
                    const PythonQtSlotInfo::ParameterInfo& param = params.at(i);
                    //std::cout << param.name.data() << " " << param.typeId << (param.isPointer?"*":"") << (param.isConst?" const":"") << std::endl;
                    argList[i] = PythonQtConv::ConvertPythonToQt(param, PyTuple_GET_ITEM(args, i-1), strict, classInfo);
                    if (argList[i]==NULL) {
                      ok = false;
                      break;
                    }
                  }
                }
                if (ok) {
-                 bool returnValueIsEnum = false;
                  // parameters are ok, now create the qt return value which is assigned to by metacall
                  if (returnValueParam.typeId != QMetaType::Void) {
-                   // extra handling of enum return value
-                   if (!returnValueParam.isPointer && returnValueParam.enumWrapper) {
-                     // create enum return value
-                     PythonQtValueStorage_ADD_VALUE(PythonQtConv::global_valueStorage, long, 0, argList[0]);
-                     returnValueIsEnum = true;
-                   } else {
-                     // create empty default value for the return value
-                     if (!directReturnValuePointer) {
-                       // create empty default value for the return value
-                       argList[0] = PythonQtConv::CreateQtReturnValue(returnValueParam);
-                       if (argList[0]==NULL) {
-                         // return value could not be created, maybe we have a registered class with a default constructor, so that we can construct the pythonqt wrapper object and
-                         // pass its internal pointer
-                         PythonQtClassInfo* info = PythonQt::priv()->getClassInfo(returnValueParam.name);
-                         if (info && info->pythonQtClassWrapper()) {
-                           PyObject* emptyTuple = PyTuple_New(0);
-                           // 1) default construct an empty object as python object (owned by PythonQt), by calling the meta class with empty arguments
-                           result = PyObject_Call((PyObject*)info->pythonQtClassWrapper(), emptyTuple, NULL);
-                           if (result) {
-                             argList[0] = ((PythonQtInstanceWrapper*)result)->_wrappedPtr;
-                           }
-                           Py_DECREF(emptyTuple);
-                         }
-                       }
-                     } else {
-                       // we can use our pointer directly!
-                       argList[0] = directReturnValuePointer;
-                     }
-                   }
+                 }
                  // invoke the slot via metacall
                  (info->decorator()?info->decorator():objectToCall)->qt_metacall(QMetaObject::InvokeMetaMethod, info->slotIndex(), argList);
                  // handle the return value (which in most cases still needs to be converted to a Python object)
                  if (argList[0] || returnValueParam.typeId == QMetaType::Void) {
                    if (directReturnValuePointer) {
                      result = NULL;
                    } else {
-                     if (!returnValueIsEnum) {
-                       // the resulting object maybe present already, because we created it above at 1)...
-                       if (!result) {
-                         result = PythonQtConv::ConvertQtValueToPython(returnValueParam, argList[0]);
-                       }
-                     } else {
-                       result = PyInt_FromLong(*((unsigned int*)argList[0]));
+                     }
                    }
                  } else {
                    QString e = QString("Called ") + info->fullSignature() + ", return type '" + returnValueParam.name + "' is ignored because it is unknown to PythonQt. Probably you should register it using qRegisterMetaType() or add a default constructor decorator to the class.";
                    PyErr_SetString(PyExc_ValueError, e.toLatin1().data());
                    result = NULL;
                  }
                }
                recursiveEntry--;
                // reset the parameter storage position to the stored pos to "pop" the parameter stack
                PythonQtConv::global_valueStorage.setPos(globalValueStoragePos);
                PythonQtConv::global_ptrStorage.setPos(globalPtrStoragePos);
                PythonQtConv::global_variantStorage.setPos(globalVariantStoragePos);
                *pythonReturnValue = result;
                // NOTE: it is important to only return here, otherwise the stack will not be popped!!!
                return result || (directReturnValuePointer && *directReturnValuePointer);
              }
              //-----------------------------------------------------------------------------------
              static PythonQtSlotFunctionObject *pythonqtslot_free_list = NULL;
              PyObject *PythonQtSlotFunction_Call(PyObject *func, PyObject *args, PyObject *kw)
              {
                PythonQtSlotFunctionObject* f = (PythonQtSlotFunctionObject*)func;
                PythonQtSlotInfo*    info = f->m_ml;
                if (PyObject_TypeCheck(f->m_self, &PythonQtInstanceWrapper_Type)) {
                  PythonQtInstanceWrapper* self = (PythonQtInstanceWrapper*) f->m_self;
                  return PythonQtSlotFunction_CallImpl(self->classInfo(), self->_obj, info, args, kw, self->_wrappedPtr);
                } else if (f->m_self->ob_type == &PythonQtClassWrapper_Type) {
                  PythonQtClassWrapper* type = (PythonQtClassWrapper*) f->m_self;
                  if (info->isClassDecorator()) {
                    return PythonQtSlotFunction_CallImpl(type->classInfo(), NULL, info, args, kw);
                  } else {
                    // otherwise, it is an unbound call and we have an instanceDecorator or normal slot...
                    Py_ssize_t argc = PyTuple_Size(args);
                    if (argc>0) {
                      PyObject* firstArg = PyTuple_GET_ITEM(args, 0);
                      if (PyObject_TypeCheck(firstArg, (PyTypeObject*)&PythonQtInstanceWrapper_Type)
                        && ((PythonQtInstanceWrapper*)firstArg)->classInfo()->inherits(type->classInfo())) {
                        PythonQtInstanceWrapper* self = (PythonQtInstanceWrapper*)firstArg;
                        // strip the first argument...
                        PyObject* newargs = PyTuple_GetSlice(args, 1, argc);
                        PyObject* result = PythonQtSlotFunction_CallImpl(self->classInfo(), self->_obj, info, newargs, kw, self->_wrappedPtr);
                        Py_DECREF(newargs);
                        return result;
                      } else {
                        // first arg is not of correct type!
                        QString error = "slot " + info->fullSignature() + " requires " + type->classInfo()->className() + " instance as first argument, got " + firstArg->ob_type->tp_name;
                        PyErr_SetString(PyExc_ValueError, error.toLatin1().data());
                        return NULL;
                      }
                    } else {
                      // wrong number of args
                      QString error = "slot " + info->fullSignature() + " requires " + type->classInfo()->className() + " instance as first argument.";
                      PyErr_SetString(PyExc_ValueError, error.toLatin1().data());
                      return NULL;
                    }
                  }
                }
                return NULL;
              }
              PyObject *PythonQtSlotFunction_CallImpl(PythonQtClassInfo* classInfo, QObject* objectToCall, PythonQtSlotInfo* info, PyObject *args, PyObject * /*kw*/, void* firstArg, void** directReturnValuePointer)
              {
                int argc = PyTuple_Size(args);
              #ifdef PYTHONQT_DEBUG
                std::cout << "called " << info->metaMethod()->typeName() << " " << info->metaMethod()->signature() << std::endl;
              #endif
                PyObject* r = NULL;
                bool ok = false;
                if (directReturnValuePointer) {
                  *directReturnValuePointer = NULL;
                }
                if (info->nextInfo()) {
                  // overloaded slot call, try on all slots with strict conversion first
                  bool strict = true;
                  PythonQtSlotInfo* i = info;
                  while (i) {
                    bool skipFirst = i->isInstanceDecorator();
                    if (i->parameterCount()-1-(skipFirst?1:0) == argc) {
                      PyErr_Clear();
                      ok = PythonQtCallSlot(classInfo, objectToCall, args, strict, i, firstArg, &r, directReturnValuePointer);
                      if (PyErr_Occurred() || ok) break;
                    }
                    i = i->nextInfo();
                    if (!i) {
                      if (strict) {
                        // one more run without being strict
                        strict = false;
                        i = info;
                      }
                    }
                  }
                  if (!ok && !PyErr_Occurred()) {
                    QString e = QString("Could not find matching overload for given arguments:\n" + PythonQtConv::PyObjGetString(args) + "\n The following slots are available:\n");
                    PythonQtSlotInfo* i = info;
                    while (i) {
                      e += QString(i->fullSignature()) + "\n";
                      i = i->nextInfo();
                    }
                    PyErr_SetString(PyExc_ValueError, e.toLatin1().data());
                  }
                } else {
                  // simple (non-overloaded) slot call
                  bool skipFirst = info->isInstanceDecorator();
                  if (info->parameterCount()-1-(skipFirst?1:0) == argc) {
                    PyErr_Clear();
                    ok = PythonQtCallSlot(classInfo, objectToCall, args, false, info, firstArg, &r, directReturnValuePointer);
                    if (!ok && !PyErr_Occurred()) {
                      QString e = QString("Called ") + info->fullSignature() + " with wrong arguments: " + PythonQtConv::PyObjGetString(args);
                      PyErr_SetString(PyExc_ValueError, e.toLatin1().data());
                    }
                  } else {
                    QString e = QString("Called ") + info->fullSignature() + " with wrong number of arguments: " + PythonQtConv::PyObjGetString(args);
                    PyErr_SetString(PyExc_ValueError, e.toLatin1().data());
                  }
                }
                return r;
              }
              PyObject *
              PythonQtSlotFunction_New(PythonQtSlotInfo *ml, PyObject *self, PyObject *module)
              {
                PythonQtSlotFunctionObject *op;
                op = pythonqtslot_free_list;
                if (op != NULL) {
                  pythonqtslot_free_list = (PythonQtSlotFunctionObject *)(op->m_self);
                  PyObject_INIT(op, &PythonQtSlotFunction_Type);
                }
                else {
                  op = PyObject_GC_New(PythonQtSlotFunctionObject, &PythonQtSlotFunction_Type);
                  if (op == NULL)
                    return NULL;
                }
                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;
              }
              PythonQtSlotInfo*
              PythonQtSlotFunction_GetSlotInfo(PyObject *op)
              {
                if (!PythonQtSlotFunction_Check(op)) {
                  PyErr_BadInternalCall();
                  return NULL;
                }
                return ((PythonQtSlotFunctionObject *)op) -> m_ml;
              }
              PyObject *
              PythonQtSlotFunction_GetSelf(PyObject *op)
              {
                if (!PythonQtSlotFunction_Check(op)) {
                  PyErr_BadInternalCall();
                  return NULL;
                }
                return ((PythonQtSlotFunctionObject *)op) -> m_self;
              }
              /* Methods (the standard built-in methods, that is) */
              static void
              meth_dealloc(PythonQtSlotFunctionObject *m)
              {
                PyObject_GC_UnTrack(m);
                Py_XDECREF(m->m_self);
                Py_XDECREF(m->m_module);
                m->m_self = (PyObject *)pythonqtslot_free_list;
                pythonqtslot_free_list = m;
              }
              static PyObject *
              meth_get__doc__(PythonQtSlotFunctionObject * /*m*/, void * /*closure*/)
              {
                Py_INCREF(Py_None);
                return Py_None;
              }
              static PyObject *
              meth_get__name__(PythonQtSlotFunctionObject *m, void * /*closure*/)
              {
                return PyString_FromString(m->m_ml->metaMethod()->signature());
              }
              static int
              meth_traverse(PythonQtSlotFunctionObject *m, visitproc visit, void *arg)
              {
                int err;
                if (m->m_self != NULL) {
                  err = visit(m->m_self, arg);
                  if (err)
                    return err;
                }
                if (m->m_module != NULL) {
                  err = visit(m->m_module, arg);
                  if (err)
                    return err;
                }
                return 0;
              }
              static PyObject *
              meth_get__self__(PythonQtSlotFunctionObject *m, void * /*closure*/)
              {
                PyObject *self;
                if (PyEval_GetRestricted()) {
                  PyErr_SetString(PyExc_RuntimeError,
                    "method.__self__ not accessible in restricted mode");
                  return NULL;
                }
                self = m->m_self;
                if (self == NULL)
                  self = Py_None;
                Py_INCREF(self);
                return self;
              }
              static PyGetSetDef meth_getsets [] = {
                {"__doc__",  (getter)meth_get__doc__,  NULL, NULL},
                {"__name__", (getter)meth_get__name__, NULL, NULL},
                {"__self__", (getter)meth_get__self__, NULL, NULL},
                {NULL, NULL, NULL,NULL},
              };
              #if PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION < 6
              #define PY_WRITE_RESTRICTED WRITE_RESTRICTED
              #endif
              #define OFF(x) offsetof(PythonQtSlotFunctionObject, x)
              static PyMemberDef meth_members[] = {
                {"__module__",    T_OBJECT,     OFF(m_module), PY_WRITE_RESTRICTED},
                {NULL}
              };
              static PyObject *
              meth_repr(PythonQtSlotFunctionObject *f)
              {
                if (f->m_self->ob_type == &PythonQtClassWrapper_Type) {
                  PythonQtClassWrapper* self = (PythonQtClassWrapper*) f->m_self;
                  return PyString_FromFormat("<unbound qt slot %s of %s type>",
                    f->m_ml->slotName().data(),
                    self->classInfo()->className());
                } else {
                  return PyString_FromFormat("<qt slot %s of %s instance at %p>",
                    f->m_ml->slotName().data(),
                    f->m_self->ob_type->tp_name,
                    f->m_self);
                }
              }
              static int
              meth_compare(PythonQtSlotFunctionObject *a, PythonQtSlotFunctionObject *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->metaMethod()->signature(), b->m_ml->metaMethod()->signature()) < 0)
                  return -1;
                else
                  return 1;
              }
              static long
              meth_hash(PythonQtSlotFunctionObject *a)
              {
                long x,y;
                if (a->m_self == NULL)
                  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;
              }
              PyTypeObject PythonQtSlotFunction_Type = {
                PyObject_HEAD_INIT(&PyType_Type)
 ,
                  "builtin_qt_slot",
                  sizeof(PythonQtSlotFunctionObject),
 ,
                  (destructor)meth_dealloc,     /* tp_dealloc */
 ,          /* tp_print */
 ,          /* tp_getattr */
 ,          /* tp_setattr */
                  (cmpfunc)meth_compare,      /* tp_compare */
                  (reprfunc)meth_repr,      /* tp_repr */
 ,          /* tp_as_number */
 ,          /* tp_as_sequence */
 ,          /* tp_as_mapping */
                  (hashfunc)meth_hash,      /* tp_hash */
                  PythonQtSlotFunction_Call,      /* tp_call */
 ,          /* tp_str */
                  PyObject_GenericGetAttr,    /* tp_getattro */
 ,          /* tp_setattro */
 ,          /* tp_as_buffer */
                  Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
 ,          /* tp_doc */
                  (traverseproc)meth_traverse,    /* tp_traverse */
 ,          /* tp_clear */
 ,          /* tp_richcompare */
 ,          /* tp_weaklistoffset */
 ,          /* tp_iter */
 ,          /* tp_iternext */
 ,          /* tp_methods */
                  meth_members,       /* tp_members */
                  meth_getsets,       /* tp_getset */
 ,          /* tp_base */
 ,          /* tp_dict */
              };
              /* Clear out the free list */
              void
              PythonQtSlotFunction_Fini(void)
              {
                while (pythonqtslot_free_list) {
                  PythonQtSlotFunctionObject *v = pythonqtslot_free_list;
                  pythonqtslot_free_list = (PythonQtSlotFunctionObject *)(v->m_self);
                  PyObject_GC_Del(v);
                }
              }

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