PythonQtObjectPtr.h
173 lines
| 5.3 KiB
| text/x-c
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CLexer
/ src / PythonQtObjectPtr.h
ezust
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r0 | #ifndef _PYTHONQTOBJECTPTR_H | |
#define _PYTHONQTOBJECTPTR_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 PythonQtObjectPtr.h | |||
// \author Florian Link | |||
// \author Last changed by $Author: florian $ | |||
// \date 2006-05 | |||
*/ | |||
//---------------------------------------------------------------------------------- | |||
#include <Python.h> | |||
#include "PythonQtSystem.h" | |||
florianlink
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r10 | #include <QVariant> | |
#include <QVariantList> | |||
ezust
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r0 | ||
//! a smart pointer that stores a PyObject pointer and that handles reference counting automatically | |||
class PYTHONQT_EXPORT PythonQtObjectPtr | |||
{ | |||
public: | |||
PythonQtObjectPtr():_object(NULL) {} | |||
PythonQtObjectPtr(const PythonQtObjectPtr &p):_object(NULL) { | |||
setObject(p.object()); | |||
} | |||
ezust
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r2 | //! If the given variant holds a PythonQtObjectPtr, extract the value from it and hold onto the reference. This results in an increment of the reference count. | |
PythonQtObjectPtr(const QVariant& variant):_object(NULL) { | |||
fromVariant(variant); | |||
} | |||
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r0 | PythonQtObjectPtr(PyObject* o) { | |
_object = o; | |||
if (o) Py_INCREF(_object); | |||
} | |||
~PythonQtObjectPtr() { if (_object) Py_DECREF(_object); } | |||
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r2 | ||
//! If the given variant holds a PythonQtObjectPtr, extract the value from it and hold onto the reference. This results in an increment of the reference count. | |||
bool fromVariant(const QVariant& variant); | |||
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r0 | PythonQtObjectPtr &operator=(const PythonQtObjectPtr &p) { | |
setObject(p.object()); | |||
return *this; | |||
} | |||
PythonQtObjectPtr &operator=(PyObject* o) { | |||
setObject(o); | |||
return *this; | |||
} | |||
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r2 | ||
PythonQtObjectPtr &operator=(const QVariant& variant) { | |||
fromVariant(variant); | |||
return *this; | |||
} | |||
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r0 | bool operator==( const PythonQtObjectPtr &p ) const { | |
return object() == p.object(); | |||
} | |||
bool operator!= ( const PythonQtObjectPtr& p ) const { | |||
return !( *this == p ); | |||
} | |||
bool operator==( PyObject* p ) const { | |||
return object() == p; | |||
} | |||
bool operator!= ( PyObject* p ) const { | |||
return object() != p; | |||
} | |||
bool isNull() const { return !object(); } | |||
PyObject* operator->() const { return object(); } | |||
PyObject& operator*() const { return *( object() ); } | |||
operator PyObject*() const { return object(); } | |||
//! sets the object and passes the ownership (stealing the reference, in Python slang) | |||
void setNewRef(PyObject* o) { | |||
if (o != _object) { | |||
if (_object) Py_DECREF(_object); | |||
_object = o; | |||
} | |||
} | |||
PyObject* object() const { | |||
return _object; | |||
} | |||
//! evaluates the given script code in the context of this object and returns the result value | |||
QVariant evalScript(const QString& script, int start = Py_file_input); | |||
//! 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* pycode); | |||
//! evaluates the given code in the context | |||
void evalFile(const QString& filename); | |||
//! add the given \c object to the \c module as a variable with \c name (it can be removed via clearVariable) | |||
void addObject(const QString& name, QObject* object); | |||
//! add the given variable to the module | |||
void addVariable(const QString& name, const QVariant& v); | |||
//! remove the given variable | |||
void removeVariable(const QString& name); | |||
//! get the variable with the \c name of the \c module, returns an invalid QVariant on error | |||
QVariant getVariable(const QString& name); | |||
//! call the given python object (in the scope of the current object), returns the result converted to a QVariant | |||
florianlink
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r10 | QVariant call(const QString& callable, const QVariantList& args = QVariantList()); | |
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r0 | ||
florianlink
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r36 | //! call the contained python object directly, returns the result converted to a QVariant | |
QVariant call(const QVariantList& args = QVariantList()); | |||
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r0 | ||
protected: | |||
void setObject(PyObject* o) { | |||
if (o != _object) { | |||
if (_object) Py_DECREF(_object); | |||
_object = o; | |||
if (_object) Py_INCREF(_object); | |||
} | |||
} | |||
private: | |||
PyObject* _object; | |||
}; | |||
// register it to the meta type system | |||
Q_DECLARE_METATYPE(PythonQtObjectPtr) | |||
#endif |