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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (c) 2006 The Zdeno Ash Miklas
*
* This source file is part of VideoTexture library
*
* Contributor(s):
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file BlendType.h
* \ingroup bgevideotex
*/
#ifndef __BLENDTYPE_H__
#define __BLENDTYPE_H__
/// class allows check type of blender python object and access its contained object
/// MUST ONLY BE USED FOR KX classes that are descendent of PyObjectPlus
template <class PyObj> class BlendType
{
public:
/// constructor
BlendType (const char * name) : m_name(name), m_objType(NULL) {}
/// check blender type and return pointer to contained object or NULL (if type is not valid)
PyObj *checkType(PyObject *obj)
{
// if pointer to type isn't set
if (m_objType == NULL)
{
// compare names of type
if (strcmp(Py_TYPE(obj)->tp_name, m_name) == 0)
// if name of type match, save pointer to type
m_objType = Py_TYPE(obj);
else
// if names of type don't match, return NULL
return NULL;
}
// if pointer to type is set and don't match to type of provided object, return NULL
else if (Py_TYPE(obj) != m_objType)
return NULL;
// return pointer to object, this class can only be used for KX object =>
// the Py object is actually a proxy
return (PyObj *)BGE_PROXY_REF(obj);
}
/// parse arguments to get object
PyObj *parseArg(PyObject *args)
{
// parse arguments
PyObject *obj;
if (PyArg_ParseTuple(args, "O", &obj)) {
// if successfully parsed, return pointer to object
return checkType(obj);
}
// otherwise return NULL
return NULL;
}
protected:
/// name of Python type
const char * m_name;
/// pointer to Python type
PyTypeObject *m_objType;
};
#endif
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