PythonQtConversion.h
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| text/x-c
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CLexer
/ src / PythonQtConversion.h
ezust
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r0 | #ifndef _PYTHONQTCONVERSION_H | ||
| #define _PYTHONQTCONVERSION_H | ||||
| /* | ||||
| * | ||||
florianlink
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r133 | * Copyright (C) 2010 MeVis Medical Solutions AG All Rights Reserved. | ||
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r0 | * | ||
| * 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 | ||||
| * | ||||
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florianlink
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r133 | * Contact information: MeVis Medical Solutions AG, Universitaetsallee 29, | ||
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r0 | * 28359 Bremen, Germany or: | ||
| * | ||||
| * http://www.mevis.de | ||||
| * | ||||
| */ | ||||
| //---------------------------------------------------------------------------------- | ||||
| /*! | ||||
| // \file PythonQtConversion.h | ||||
| // \author Florian Link | ||||
| // \author Last changed by $Author: florian $ | ||||
| // \date 2006-05 | ||||
| */ | ||||
| //---------------------------------------------------------------------------------- | ||||
| #include "PythonQt.h" | ||||
| #include "PythonQtMisc.h" | ||||
| #include "PythonQtClassInfo.h" | ||||
| #include "PythonQtMethodInfo.h" | ||||
| #include <QWidget> | ||||
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florianlink
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r10 | #include <QList> | ||
| #include <vector> | ||||
| typedef PyObject* PythonQtConvertMetaTypeToPythonCB(const void* inObject, int metaTypeId); | ||||
| typedef bool PythonQtConvertPythonToMetaTypeCB(PyObject* inObject, void* outObject, int metaTypeId, bool strict); | ||||
| #define PythonQtRegisterListTemplateConverter(type, innertype) \ | ||||
| { int typeId = qRegisterMetaType<type<innertype> >(#type"<"#innertype">"); \ | ||||
| PythonQtConv::registerPythonToMetaTypeConverter(typeId, PythonQtConvertPythonListToListOfValueType<type<innertype>, innertype>); \ | ||||
| PythonQtConv::registerMetaTypeToPythonConverter(typeId, PythonQtConvertListOfValueTypeToPythonList<type<innertype>, innertype>); \ | ||||
| } | ||||
| #define PythonQtRegisterToolClassesTemplateConverter(innertype) \ | ||||
| PythonQtRegisterListTemplateConverter(QList, innertype); \ | ||||
| PythonQtRegisterListTemplateConverter(QVector, innertype); \ | ||||
| PythonQtRegisterListTemplateConverter(std::vector, innertype); | ||||
| // TODO: add QHash etc. here! | ||||
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r0 | |||
| //! a static class that offers methods for type conversion | ||||
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r10 | class PYTHONQT_EXPORT PythonQtConv { | ||
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r0 | |||
| public: | ||||
| //! get a ref counted True or False Python object | ||||
| static PyObject* GetPyBool(bool val); | ||||
| //! converts the Qt parameter given in \c data, interpreting it as a \c info parameter, into a Python object, | ||||
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r10 | static PyObject* ConvertQtValueToPython(const PythonQtMethodInfo::ParameterInfo& info, const void* data); | ||
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r0 | |||
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r55 | //! convert python object to Qt (according to the given parameter) and if the conversion should be strict (classInfo is currently not used anymore) | ||
| static void* ConvertPythonToQt(const PythonQtMethodInfo::ParameterInfo& info, PyObject* obj, bool strict, PythonQtClassInfo* classInfo, void* alreadyAllocatedCPPObject = NULL); | ||||
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r0 | |||
| //! creates a data storage for the passed parameter type and returns a void pointer to be set as arg[0] of qt_metacall | ||||
| static void* CreateQtReturnValue(const PythonQtMethodInfo::ParameterInfo& info); | ||||
| //! converts QString to Python string (unicode!) | ||||
| static PyObject* QStringToPyObject(const QString& str); | ||||
| //! converts QStringList to Python tuple | ||||
| static PyObject* QStringListToPyObject(const QStringList& list); | ||||
| //! converts QStringList to Python list | ||||
| static PyObject* QStringListToPyList(const QStringList& list); | ||||
| //! get string representation of py object | ||||
| static QString PyObjGetRepresentation(PyObject* val); | ||||
| //! get string value from py object | ||||
| static QString PyObjGetString(PyObject* val) { bool ok; QString s = PyObjGetString(val, false, ok); return s; } | ||||
| //! get string value from py object | ||||
| static QString PyObjGetString(PyObject* val, bool strict, bool &ok); | ||||
| //! get bytes from py object | ||||
| static QByteArray PyObjGetBytes(PyObject* val, bool strict, bool &ok); | ||||
| //! get int from py object | ||||
| static int PyObjGetInt(PyObject* val, bool strict, bool &ok); | ||||
| //! get int64 from py object | ||||
| static qint64 PyObjGetLongLong(PyObject* val, bool strict, bool &ok); | ||||
| //! get int64 from py object | ||||
| static quint64 PyObjGetULongLong(PyObject* val, bool strict, bool &ok); | ||||
| //! get double from py object | ||||
| static double PyObjGetDouble(PyObject* val, bool strict, bool &ok); | ||||
| //! get bool from py object | ||||
| static bool PyObjGetBool(PyObject* val, bool strict, bool &ok); | ||||
| //! create a string list from python sequence | ||||
| static QStringList PyObjToStringList(PyObject* val, bool strict, bool& ok); | ||||
| //! convert python object to qvariant, if type is given it will try to create a qvariant of that type, otherwise | ||||
| //! it will guess from the python type | ||||
| static QVariant PyObjToQVariant(PyObject* val, int type = -1); | ||||
| //! convert QVariant from PyObject | ||||
| static PyObject* QVariantToPyObject(const QVariant& v); | ||||
| static PyObject* QVariantMapToPyObject(const QVariantMap& m); | ||||
| static PyObject* QVariantListToPyObject(const QVariantList& l); | ||||
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r10 | |||
| //! get human readable string from CPP object (when the metatype is known) | ||||
| static QString CPPObjectToString(int type, const void* data); | ||||
| //! register a converter callback from python to cpp for given metatype | ||||
| static void registerPythonToMetaTypeConverter(int metaTypeId, PythonQtConvertPythonToMetaTypeCB* cb) { _pythonToMetaTypeConverters.insert(metaTypeId, cb); } | ||||
| //! register a converter callback from cpp to python for given metatype | ||||
| static void registerMetaTypeToPythonConverter(int metaTypeId, PythonQtConvertMetaTypeToPythonCB* cb) { _metaTypeToPythonConverters.insert(metaTypeId, cb); } | ||||
| //! returns the inner type id of a simple template of the form SomeObject<InnerType> | ||||
| static int getInnerTemplateMetaType(const QByteArray& typeName); | ||||
| //! converts the Qt parameter given in \c data, interpreting it as a \c type registered qvariant/meta type, into a Python object, | ||||
| static PyObject* ConvertQtValueToPythonInternal(int type, const void* data); | ||||
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r0 | public: | ||
| static PythonQtValueStorage<qint64, 128> global_valueStorage; | ||||
| static PythonQtValueStorage<void*, 128> global_ptrStorage; | ||||
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r157 | static PythonQtValueStorageWithCleanup<QVariant, 128> global_variantStorage; | ||
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r0 | |||
| protected: | ||||
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r10 | static QHash<int, PythonQtConvertMetaTypeToPythonCB*> _metaTypeToPythonConverters; | ||
| static QHash<int, PythonQtConvertPythonToMetaTypeCB*> _pythonToMetaTypeConverters; | ||||
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r64 | |||
| //! handle automatic conversion of some special types (QColor, QBrush, ...) | ||||
| static void* handlePythonToQtAutoConversion(int typeId, PyObject* obj, void* alreadyAllocatedCPPObject); | ||||
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r0 | |||
| //! converts the list of pointers of given type to Python | ||||
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r10 | static PyObject* ConvertQListOfPointerTypeToPythonList(QList<void*>* list, const QByteArray& type); | ||
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r0 | //! tries to convert the python object to a QList of pointers to \c type objects, returns true on success | ||
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r10 | static bool ConvertPythonListToQListOfPointerType(PyObject* obj, QList<void*>* list, const QByteArray& type, bool strict); | ||
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r24 | |||
| //! cast wrapper to given className if possible | ||||
| static void* castWrapperTo(PythonQtInstanceWrapper* wrapper, const QByteArray& className, bool& ok); | ||||
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r0 | }; | ||
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r10 | template<class ListType, class T> | ||
| PyObject* PythonQtConvertListOfValueTypeToPythonList(const void* /*QList<T>* */ inList, int metaTypeId) | ||||
| { | ||||
| ListType* list = (ListType*)inList; | ||||
| static const int innerType = PythonQtConv::getInnerTemplateMetaType(QByteArray(QMetaType::typeName(metaTypeId))); | ||||
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r130 | if (innerType == QVariant::Invalid) { | ||
| std::cerr << "PythonQtConvertListOfValueTypeToPythonList: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl; | ||||
| } | ||||
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r10 | PyObject* result = PyTuple_New(list->size()); | ||
| int i = 0; | ||||
| foreach (const T& value, *list) { | ||||
| PyTuple_SET_ITEM(result, i, PythonQtConv::ConvertQtValueToPythonInternal(innerType, &value)); | ||||
| i++; | ||||
| } | ||||
| return result; | ||||
| } | ||||
| template<class ListType, class T> | ||||
| bool PythonQtConvertPythonListToListOfValueType(PyObject* obj, void* /*QList<T>* */ outList, int metaTypeId, bool /*strict*/) | ||||
| { | ||||
| ListType* list = (ListType*)outList; | ||||
| static const int innerType = PythonQtConv::getInnerTemplateMetaType(QByteArray(QMetaType::typeName(metaTypeId))); | ||||
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r130 | if (innerType == QVariant::Invalid) { | ||
| std::cerr << "PythonQtConvertPythonListToListOfValueType: unknown inner type " << QMetaType::typeName(metaTypeId) << std::endl; | ||||
| } | ||||
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r10 | 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); | ||||
| // this is quite some overhead, but it avoids having another large switch... | ||||
| QVariant v = PythonQtConv::PyObjToQVariant(value, innerType); | ||||
| if (v.isValid()) { | ||||
| list->push_back(qVariantValue<T>(v)); | ||||
| } else { | ||||
| result = false; | ||||
| break; | ||||
| } | ||||
| } | ||||
| } | ||||
| return result; | ||||
| } | ||||
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r0 | #endif | ||