PythonInput.h

   1
   2 /*
   3  * Python Input Module for NumptyPhysics
   4  * Copyright (c) 2009 Thomas Perl <thpinfo.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 3 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  */
  17
  18 #ifndef PYTHONINPUT_H
  19 #define PYTHONINPUT_H
  20
  21 #ifdef HAVE_PYTHON
  22
  23 #include <Python.h>
  24 #include "SDL/SDL.h"
  25
  26 class PythonInput {
  27     private:
  28         PyThreadState* m_python_threadstate;
  29         int m_width;
  30         int m_height;
  31
  32         PyObject* create_module();
  33         static PyObject* post_event(PyObject* self, PyObject *event);
  34     public:
  35         PythonInput(int width, int height)
  36             : m_width(width), m_height(height)
  37         {
  38             PyObject* numpty_module;
  39             PyObject* input_module;
  40
  41             /* Initialize the Python Interpreter */
  42             setenv("PYTHONPATH", ".", 1);
  43             PyEval_InitThreads();
  44             Py_Initialize();
  45
  46             /* Add the glue module and load tuioinput */
  47             numpty_module = create_module();
  48             input_module = PyImport_ImportModule("tuioinput");
  49             if (input_module == NULL) {
  50                 PyErr_Print();
  51             }
  52             Py_DECREF(input_module);
  53             Py_DECREF(numpty_module);
  54
  55             m_python_threadstate = PyEval_SaveThread();
  56         }
  57
  58         ~PythonInput()
  59         {
  60             PyEval_RestoreThread(m_python_threadstate);
  61             /* Could/should call Py_Finalize() here, but crashes */
  62         }
  63 };
  64
  65 #endif /* HAVE_PYTHON */
  66
  67 #endif