Blender V2.61 - r43446

BlendType.h

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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of VideoTexture library
00004 
00005 Copyright (c) 2006 The Zdeno Ash Miklas
00006 
00007 This program is free software; you can redistribute it and/or modify it under
00008 the terms of the GNU Lesser General Public License as published by the Free Software
00009 Foundation; either version 2 of the License, or (at your option) any later
00010 version.
00011 
00012 This program is distributed in the hope that it will be useful, but WITHOUT
00013 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00014 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
00015 
00016 You should have received a copy of the GNU Lesser General Public License along with
00017 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
00018 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
00019 http://www.gnu.org/copyleft/lesser.txt.
00020 -----------------------------------------------------------------------------
00021 */
00022 
00027 #if !defined BLENDTYPE_H
00028 #define BLENDTYPE_H
00029 
00030 
00033 template <class PyObj> class BlendType
00034 {
00035 public:
00037     BlendType (const char * name) : m_name(name) {}
00038 
00040     PyObj * checkType (PyObject * obj)
00041     {
00042         // if pointer to type isn't set 
00043         if (m_objType == NULL)
00044         {
00045             // compare names of type
00046             if (strcmp(Py_TYPE(obj)->tp_name, m_name) == 0)
00047                 // if name of type match, save pointer to type
00048                 m_objType = Py_TYPE(obj);
00049             else
00050                 // if names of type don't match, return NULL
00051                 return NULL;
00052         }
00053         // if pointer to type is set and don't match to type of provided object, return NULL
00054         else if (Py_TYPE(obj) != m_objType)
00055             return NULL;
00056         // return pointer to object, this class can only be used for KX object =>
00057         // the Py object is actually a proxy
00058         return (PyObj*)BGE_PROXY_REF(obj);
00059     }
00060 
00062     PyObj * parseArg (PyObject * args)
00063     {
00064         // parse arguments
00065         PyObject * obj;
00066         if (PyArg_ParseTuple(args, "O", &obj))
00067             // if successfully parsed, return pointer to object
00068             return checkType(obj);
00069         // otherwise return NULL
00070         return NULL;
00071     }
00072 
00073 protected:
00075     const char * m_name;
00077     PyTypeObject * m_objType;
00078 };
00079 
00080 
00081 #endif