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#ifndef _PYTHONQTCONVERSION_H
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#define _PYTHONQTCONVERSION_H
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/*
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*
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* Copyright (C) 2010 MeVis Medical Solutions AG All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Contact information: MeVis Medical Solutions AG, Universitaetsallee 29,
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* 28359 Bremen, Germany or:
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*
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* http://www.mevis.de
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*
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*/
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//----------------------------------------------------------------------------------
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/*!
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// \file PythonQtConversion.h
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// \author Florian Link
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// \author Last changed by $Author: florian $
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// \date 2006-05
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*/
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//----------------------------------------------------------------------------------
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#include "PythonQt.h"
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#include "PythonQtMisc.h"
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#include "PythonQtClassInfo.h"
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#include "PythonQtMethodInfo.h"
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#include <QWidget>
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#include <QList>
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#include <vector>
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typedef PyObject* PythonQtConvertMetaTypeToPythonCB(const void* inObject, int metaTypeId);
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typedef bool PythonQtConvertPythonToMetaTypeCB(PyObject* inObject, void* outObject, int metaTypeId, bool strict);
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#define PythonQtRegisterListTemplateConverter(type, innertype) \
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{ int typeId = qRegisterMetaType<type<innertype > >(#type"<"#innertype">"); \
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PythonQtConv::registerPythonToMetaTypeConverter(typeId, PythonQtConvertPythonListToListOfValueType<type<innertype >, innertype>); \
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PythonQtConv::registerMetaTypeToPythonConverter(typeId, PythonQtConvertListOfValueTypeToPythonList<type<innertype >, innertype>); \
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}
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#define PythonQtRegisterListTemplateConverterForKnownClass(type, innertype) \
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{ int typeId = qRegisterMetaType<type<innertype > >(#type"<"#innertype">"); \
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PythonQtConv::registerPythonToMetaTypeConverter(typeId, PythonQtConvertPythonListToListOfKnownClass<type<innertype >, innertype>); \
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PythonQtConv::registerMetaTypeToPythonConverter(typeId, PythonQtConvertListOfKnownClassToPythonList<type<innertype >, innertype>); \
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}
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#define PythonQtRegisterQPairConverter(type1, type2) \
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{ int typeId = qRegisterMetaType<QPair<type1, type2> >("QPair<"#type1","#type2">"); \
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PythonQtConv::registerPythonToMetaTypeConverter(typeId, PythonQtConvertPythonToPair<type1, type2>); \
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PythonQtConv::registerMetaTypeToPythonConverter(typeId, PythonQtConvertPairToPython<type1, type2>); \
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}
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#define PythonQtRegisterIntegerMapConverter(type, innertype) \
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{ int typeId = qRegisterMetaType<type<int, innertype > >(#type"<int, "#innertype">"); \
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PythonQtConv::registerPythonToMetaTypeConverter(typeId, PythonQtConvertPythonToIntegerMap<type<int, innertype >, innertype>); \
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PythonQtConv::registerMetaTypeToPythonConverter(typeId, PythonQtConvertIntegerMapToPython<type<int, innertype >, innertype>); \
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}
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#define PythonQtRegisterListTemplateQPairConverter(listtype, type1, type2) \
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{ \
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qRegisterMetaType<QPair<type1, type2> >("QPair<"#type1","#type2">"); \
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int typeId = qRegisterMetaType<listtype<QPair<type1, type2> > >(#listtype"<QPair<"#type1","#type2">>"); \
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PythonQtConv::registerPythonToMetaTypeConverter(typeId, PythonQtConvertPythonListToListOfPair<listtype<QPair<type1, type2> >, type1, type2>); \
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PythonQtConv::registerMetaTypeToPythonConverter(typeId, PythonQtConvertListOfPairToPythonList<listtype<QPair<type1, type2> >, type1, type2>); \
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}
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#define PythonQtRegisterToolClassesTemplateConverter(innertype) \
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PythonQtRegisterListTemplateConverter(QList, innertype); \
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PythonQtRegisterListTemplateConverter(QVector, innertype); \
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PythonQtRegisterListTemplateConverter(std::vector, innertype);
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#define PythonQtRegisterToolClassesTemplateConverterForKnownClass(innertype) \
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PythonQtRegisterListTemplateConverterForKnownClass(QList, innertype); \
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PythonQtRegisterListTemplateConverterForKnownClass(QVector, innertype); \
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PythonQtRegisterListTemplateConverterForKnownClass(std::vector, innertype);
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//! a static class that offers methods for type conversion
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class PYTHONQT_EXPORT PythonQtConv {
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public:
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//! get a ref counted True or False Python object
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static PyObject* GetPyBool(bool val);
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//! converts the Qt parameter given in \c data, interpreting it as a \c info parameter, into a Python object,
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static PyObject* ConvertQtValueToPython(const PythonQtMethodInfo::ParameterInfo& info, const void* data);
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//! convert python object to Qt (according to the given parameter) and if the conversion should be strict (classInfo is currently not used anymore)
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static void* ConvertPythonToQt(const PythonQtMethodInfo::ParameterInfo& info, PyObject* obj, bool strict, PythonQtClassInfo* classInfo, void* alreadyAllocatedCPPObject = NULL);
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//! creates a data storage for the passed parameter type and returns a void pointer to be set as arg[0] of qt_metacall
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static void* CreateQtReturnValue(const PythonQtMethodInfo::ParameterInfo& info);
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//! converts QString to Python string (unicode!)
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static PyObject* QStringToPyObject(const QString& str);
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//! converts QStringList to Python tuple
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static PyObject* QStringListToPyObject(const QStringList& list);
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//! converts QStringList to Python list
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static PyObject* QStringListToPyList(const QStringList& list);
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//! get string representation of py object
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static QString PyObjGetRepresentation(PyObject* val);
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//! get string value from py object
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static QString PyObjGetString(PyObject* val) { bool ok; QString s = PyObjGetString(val, false, ok); return s; }
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//! get string value from py object
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static QString PyObjGetString(PyObject* val, bool strict, bool &ok);
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//! get bytes from py object
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static QByteArray PyObjGetBytes(PyObject* val, bool strict, bool &ok);
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//! get int from py object
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static int PyObjGetInt(PyObject* val, bool strict, bool &ok);
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//! get int64 from py object
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static qint64 PyObjGetLongLong(PyObject* val, bool strict, bool &ok);
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//! get int64 from py object
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static quint64 PyObjGetULongLong(PyObject* val, bool strict, bool &ok);
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//! get double from py object
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static double PyObjGetDouble(PyObject* val, bool strict, bool &ok);
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//! get bool from py object
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static bool PyObjGetBool(PyObject* val, bool strict, bool &ok);
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//! create a string list from python sequence
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static QStringList PyObjToStringList(PyObject* val, bool strict, bool& ok);
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//! convert python object to qvariant, if type is given it will try to create a qvariant of that type, otherwise
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//! it will guess from the python type
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static QVariant PyObjToQVariant(PyObject* val, int type = -1);
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//! convert QVariant from PyObject
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static PyObject* QVariantToPyObject(const QVariant& v);
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static PyObject* QVariantHashToPyObject(const QVariantHash& m);
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static PyObject* QVariantMapToPyObject(const QVariantMap& m);
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static PyObject* QVariantListToPyObject(const QVariantList& l);
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//! get human readable string from CPP object (when the metatype is known)
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static QString CPPObjectToString(int type, const void* data);
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//! register a converter callback from python to cpp for given metatype
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static void registerPythonToMetaTypeConverter(int metaTypeId, PythonQtConvertPythonToMetaTypeCB* cb) { _pythonToMetaTypeConverters.insert(metaTypeId, cb); }
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//! register a converter callback from cpp to python for given metatype
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static void registerMetaTypeToPythonConverter(int metaTypeId, PythonQtConvertMetaTypeToPythonCB* cb) { _metaTypeToPythonConverters.insert(metaTypeId, cb); }
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//! converts the Qt parameter given in \c data, interpreting it as a \c type registered qvariant/meta type, into a Python object,
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static PyObject* ConvertQtValueToPythonInternal(int type, const void* data);
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//! creates a copy of given object, using the QMetaType
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static PyObject* createCopyFromMetaType( int type, const void* object );
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//! cast wrapper to given className if possible
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static void* castWrapperTo(PythonQtInstanceWrapper* wrapper, const QByteArray& className, bool& ok);
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public:
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static PythonQtValueStorage<qint64, 128> global_valueStorage;
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static PythonQtValueStorage<void*, 128> global_ptrStorage;
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static PythonQtValueStorageWithCleanup<QVariant, 128> global_variantStorage;
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protected:
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static QHash<int, PythonQtConvertMetaTypeToPythonCB*> _metaTypeToPythonConverters;
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static QHash<int, PythonQtConvertPythonToMetaTypeCB*> _pythonToMetaTypeConverters;
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//! handle automatic conversion of some special types (QColor, QBrush, ...)
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static void* handlePythonToQtAutoConversion(int typeId, PyObject* obj, void* alreadyAllocatedCPPObject);
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//! converts the list of pointers of given type to Python
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static PyObject* ConvertQListOfPointerTypeToPythonList(QList<void*>* list, const QByteArray& type);
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//! tries to convert the python object to a QList of pointers to \c type objects, returns true on success
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static bool ConvertPythonListToQListOfPointerType(PyObject* obj, QList<void*>* list, const QByteArray& type, bool strict);
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//! helper template method for conversion from Python to QVariantMap/Hash
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template <typename Map>
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static void pythonToMapVariant(PyObject* val, QVariant& result);
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//! helper template function for QVariantMapToPyObject/QVariantHashToPyObject
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template <typename Map>
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static PyObject* mapToPython (const Map& m);
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};
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template<class ListType, class T>
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PyObject* PythonQtConvertListOfValueTypeToPythonList(const void* /*QList<T>* */ inList, int metaTypeId)
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{
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ListType* list = (ListType*)inList;
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static const int innerType = PythonQtMethodInfo::getInnerTemplateMetaType(QByteArray(QMetaType::typeName(metaTypeId)));
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if (innerType == QVariant::Invalid) {
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std::cerr << "PythonQtConvertListOfValueTypeToPythonList: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl;
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}
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PyObject* result = PyTuple_New(list->size());
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int i = 0;
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Q_FOREACH (const T& value, *list) {
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PyTuple_SET_ITEM(result, i, PythonQtConv::ConvertQtValueToPythonInternal(innerType, &value));
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i++;
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}
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return result;
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}
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template<class ListType, class T>
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bool PythonQtConvertPythonListToListOfValueType(PyObject* obj, void* /*QList<T>* */ outList, int metaTypeId, bool /*strict*/)
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{
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ListType* list = (ListType*)outList;
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static const int innerType = PythonQtMethodInfo::getInnerTemplateMetaType(QByteArray(QMetaType::typeName(metaTypeId)));
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if (innerType == QVariant::Invalid) {
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std::cerr << "PythonQtConvertPythonListToListOfValueType: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl;
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}
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bool result = false;
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if (PySequence_Check(obj)) {
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int count = PySequence_Size(obj);
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if (count >= 0) {
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result = true;
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PyObject* value;
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for (int i = 0;i<count;i++) {
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value = PySequence_GetItem(obj,i);
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// this is quite some overhead, but it avoids having another large switch...
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QVariant v = PythonQtConv::PyObjToQVariant(value, innerType);
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if (v.isValid()) {
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list->push_back(qvariant_cast<T>(v));
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} else {
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result = false;
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break;
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}
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}
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}
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}
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return result;
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}
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//--------------------------------------------------------------------------------------------------------------------
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template<class ListType, class T>
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PyObject* PythonQtConvertListOfKnownClassToPythonList(const void* /*QList<T>* */ inList, int metaTypeId)
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{
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ListType* list = (ListType*)inList;
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static PythonQtClassInfo* innerType = PythonQt::priv()->getClassInfo(PythonQtMethodInfo::getInnerTemplateTypeName(QByteArray(QMetaType::typeName(metaTypeId))));
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if (innerType == NULL) {
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std::cerr << "PythonQtConvertListOfKnownClassToPythonList: unknown inner type " << innerType->className().constData() << std::endl;
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}
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PyObject* result = PyTuple_New(list->size());
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int i = 0;
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Q_FOREACH(const T& value, *list) {
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T* newObject = new T(value);
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PythonQtInstanceWrapper* wrap = (PythonQtInstanceWrapper*)PythonQt::priv()->wrapPtr(newObject, innerType->className());
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wrap->_ownedByPythonQt = true;
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PyTuple_SET_ITEM(result, i, (PyObject*)wrap);
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i++;
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}
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return result;
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}
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template<class ListType, class T>
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bool PythonQtConvertPythonListToListOfKnownClass(PyObject* obj, void* /*QList<T>* */ outList, int metaTypeId, bool /*strict*/)
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{
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ListType* list = (ListType*)outList;
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static PythonQtClassInfo* innerType = PythonQt::priv()->getClassInfo(PythonQtMethodInfo::getInnerTemplateTypeName(QByteArray(QMetaType::typeName(metaTypeId))));
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if (innerType == NULL) {
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std::cerr << "PythonQtConvertListOfKnownClassToPythonList: unknown inner type " << innerType->className().constData() << std::endl;
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}
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bool result = false;
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if (PySequence_Check(obj)) {
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int count = PySequence_Size(obj);
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if (count >= 0) {
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result = true;
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PyObject* value;
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for (int i = 0; i < count; i++) {
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value = PySequence_GetItem(obj, i);
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if (PyObject_TypeCheck(value, &PythonQtInstanceWrapper_Type)) {
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PythonQtInstanceWrapper* wrap = (PythonQtInstanceWrapper*)value;
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bool ok;
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T* object = (T*)PythonQtConv::castWrapperTo(wrap, innerType->className(), ok);
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if (ok) {
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list->push_back(*object);
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} else {
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result = false;
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break;
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}
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} else {
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result = false;
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break;
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}
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}
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}
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}
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return result;
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}
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//--------------------------------------------------------------------------------------------------------------------
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template<class T1, class T2>
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PyObject* PythonQtConvertPairToPython(const void* /*QPair<T1,T2>* */ inPair, int metaTypeId)
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{
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QPair<T1, T2>* pair = (QPair<T1, T2>*)inPair;
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static int innerType1 = -1;
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static int innerType2 = -1;
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if (innerType1==-1) {
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QByteArray innerTypes = PythonQtMethodInfo::getInnerTemplateTypeName(QByteArray(QMetaType::typeName(metaTypeId)));
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QList<QByteArray> names = innerTypes.split(',');
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innerType1 = QMetaType::type(names.at(0).trimmed());
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innerType2 = QMetaType::type(names.at(1).trimmed());
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}
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if (innerType1 == QVariant::Invalid || innerType2 == QVariant::Invalid) {
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std::cerr << "PythonQtConvertPairToPython: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl;
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}
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PyObject* result = PyTuple_New(2);
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PyTuple_SET_ITEM(result, 0, PythonQtConv::ConvertQtValueToPythonInternal(innerType1, &pair->first));
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PyTuple_SET_ITEM(result, 1, PythonQtConv::ConvertQtValueToPythonInternal(innerType2, &pair->second));
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return result;
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}
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template<class T1, class T2>
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bool PythonQtConvertPythonToPair(PyObject* obj, void* /*QPair<T1,T2>* */ outPair, int metaTypeId, bool /*strict*/)
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{
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QPair<T1, T2>* pair = (QPair<T1, T2>*)outPair;
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static int innerType1 = -1;
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static int innerType2 = -1;
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if (innerType1 == -1) {
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QByteArray innerTypes = PythonQtMethodInfo::getInnerTemplateTypeName(QByteArray(QMetaType::typeName(metaTypeId)));
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QList<QByteArray> names = innerTypes.split(',');
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innerType1 = QMetaType::type(names.at(0).trimmed());
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innerType2 = QMetaType::type(names.at(1).trimmed());
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}
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if (innerType1 == QVariant::Invalid || innerType2 == QVariant::Invalid) {
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std::cerr << "PythonQtConvertPythonToPair: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl;
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}
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bool result = false;
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if (PySequence_Check(obj)) {
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int count = PySequence_Size(obj);
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if (count == 2) {
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result = true;
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PyObject* value;
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value = PySequence_GetItem(obj, 0);
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// this is quite some overhead, but it avoids having another large switch...
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QVariant v = PythonQtConv::PyObjToQVariant(value, innerType1);
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if (v.isValid()) {
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pair->first = qvariant_cast<T1>(v);
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} else {
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return false;
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}
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value = PySequence_GetItem(obj, 1);
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// this is quite some overhead, but it avoids having another large switch...
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|
|
v = PythonQtConv::PyObjToQVariant(value, innerType2);
|
|
|
if (v.isValid()) {
|
|
|
pair->second = qvariant_cast<T2>(v);
|
|
|
} else {
|
|
|
return false;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
//--------------------------------------------------------------------------------------------------------------------
|
|
|
|
|
|
template<class ListType, class T1, class T2>
|
|
|
PyObject* PythonQtConvertListOfPairToPythonList(const void* /*QList<QPair<T1,T2> >* */ inList, int metaTypeId)
|
|
|
{
|
|
|
ListType* list = (ListType*)inList;
|
|
|
static int innerType = PythonQtMethodInfo::getInnerTemplateMetaType(QByteArray(QMetaType::typeName(metaTypeId)));
|
|
|
if (innerType == QVariant::Invalid) {
|
|
|
std::cerr << "PythonQtConvertListOfPairToPythonList: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl;
|
|
|
}
|
|
|
PyObject* result = PyTuple_New(list->size());
|
|
|
int i = 0;
|
|
|
typedef const QPair<T1, T2> Pair;
|
|
|
Q_FOREACH(Pair& value, *list) {
|
|
|
PyObject* object = PythonQtConvertPairToPython<T1, T2>(&value, innerType);
|
|
|
PyTuple_SET_ITEM(result, i, object);
|
|
|
i++;
|
|
|
}
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
template<class ListType, class T1, class T2>
|
|
|
bool PythonQtConvertPythonListToListOfPair(PyObject* obj, void* /*QList<QPair<T1,T2> >* */ outList, int metaTypeId, bool /*strict*/)
|
|
|
{
|
|
|
ListType* list = (ListType*)outList;
|
|
|
static int innerType = PythonQtMethodInfo::getInnerTemplateMetaType(QByteArray(QMetaType::typeName(metaTypeId)));
|
|
|
if (innerType == QVariant::Invalid) {
|
|
|
std::cerr << "PythonQtConvertPythonListToListOfPair: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl;
|
|
|
}
|
|
|
bool result = false;
|
|
|
if (PySequence_Check(obj)) {
|
|
|
int count = PySequence_Size(obj);
|
|
|
if (count >= 0) {
|
|
|
result = true;
|
|
|
PyObject* value;
|
|
|
for (int i = 0; i < count; i++) {
|
|
|
QPair<T1, T2> pair;
|
|
|
value = PySequence_GetItem(obj, i);
|
|
|
if (PythonQtConvertPythonToPair<T1,T2>(value, &pair, innerType, false)) {
|
|
|
list->push_back(pair);
|
|
|
} else {
|
|
|
result = false;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
//--------------------------------------------------------------------------------------------------------------------
|
|
|
|
|
|
template<class MapType, class T>
|
|
|
PyObject* PythonQtConvertIntegerMapToPython(const void* /*QMap<int, T>* */ inMap, int metaTypeId)
|
|
|
{
|
|
|
MapType* map = (MapType*)inMap;
|
|
|
static int innerType = -1;
|
|
|
if (innerType == -1) {
|
|
|
QByteArray innerTypes = PythonQtMethodInfo::getInnerTemplateTypeName(QByteArray(QMetaType::typeName(metaTypeId)));
|
|
|
QList<QByteArray> names = innerTypes.split(',');
|
|
|
innerType = QMetaType::type(names.at(1).trimmed());
|
|
|
}
|
|
|
if (innerType == QVariant::Invalid) {
|
|
|
std::cerr << "PythonQtConvertIntegerMapToPython: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl;
|
|
|
}
|
|
|
|
|
|
PyObject* result = PyDict_New();
|
|
|
typename MapType::const_iterator t = map->constBegin();
|
|
|
PyObject* key;
|
|
|
PyObject* val;
|
|
|
for (; t != map->constEnd(); t++) {
|
|
|
key = PyInt_FromLong(t.key());
|
|
|
val = PythonQtConv::ConvertQtValueToPythonInternal(innerType, &t.value());
|
|
|
PyDict_SetItem(result, key, val);
|
|
|
Py_DECREF(key);
|
|
|
Py_DECREF(val);
|
|
|
}
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
template<class MapType, class T>
|
|
|
bool PythonQtConvertPythonToIntegerMap(PyObject* val, void* /*QMap<int, T>* */ outMap, int metaTypeId, bool /*strict*/)
|
|
|
{
|
|
|
MapType* map = (MapType*)outMap;
|
|
|
static int innerType = -1;
|
|
|
if (innerType == -1) {
|
|
|
QByteArray innerTypes = PythonQtMethodInfo::getInnerTemplateTypeName(QByteArray(QMetaType::typeName(metaTypeId)));
|
|
|
QList<QByteArray> names = innerTypes.split(',');
|
|
|
innerType = QMetaType::type(names.at(1).trimmed());
|
|
|
}
|
|
|
if (innerType == QVariant::Invalid) {
|
|
|
std::cerr << "PythonQtConvertPythonToIntegerMap: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl;
|
|
|
}
|
|
|
bool result = false;
|
|
|
if (PyMapping_Check(val)) {
|
|
|
result = true;
|
|
|
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);
|
|
|
|
|
|
bool ok;
|
|
|
int intKey = PythonQtConv::PyObjGetInt(key, false, ok);
|
|
|
// this is quite some overhead, but it avoids having another large switch...
|
|
|
QVariant v = PythonQtConv::PyObjToQVariant(value, innerType);
|
|
|
if (v.isValid() && ok) {
|
|
|
map->insert(intKey, qvariant_cast<T>(v));
|
|
|
} else {
|
|
|
result = false;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
Py_DECREF(items);
|
|
|
}
|
|
|
}
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
