Function PyImageNew

Code/Source/PythonAPI/ImagingImage_PyClass.cxx:1138–1179

------------ PyImageNew ------------ Object creation function, equivalent to the Python __new__() method. The generic handler creates a new instance using the tp_alloc field.

// The generic handler creates a new instance using the tp_alloc field.
//
static PyObject *
PyImageNew(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
  static char *keywords[] = {"file_name", "scale_factor", NULL};
  auto api = PyUtilApiFunction("|sO!", PyRunTimeErr, "imaging.Image");
  char* fileNameArg = nullptr; 
  PyObject* scaleObj = nullptr;

  if (!PyArg_ParseTupleAndKeywords(args, kwargs, api.format, keywords, &fileNameArg, &PyFloat_Type, &scaleObj)) {
      return api.argsError();
  }

  std::cout << "[PyImageNew] PyImageNew " << std::endl;
  auto self = (PyImage*)type->tp_alloc(type, 0);
  if (self != NULL) {
      self->id = 1;
  }

  if (fileNameArg != nullptr) {
      std::cout << "[PyImageNew] fileNameArg: " << fileNameArg << std::endl;
      self->image_node = ReadFile(std::string(fileNameArg));
      self->image_data  = dynamic_cast<mitk::Image*>(self->image_node->GetData());
  }

  // Process 'scale' argument.
  if (scaleObj != nullptr) {
      double scale = PyFloat_AsDouble(scaleObj);
      if (PyErr_Occurred()) {
          return nullptr;
      }

      if (scale <= 0.0) {
          api.error("The 'scale ' argument must be >= 0.0.");
          return nullptr;
      }

      std::cout << "[PyImageNew] Scale image: " << scale << std::endl;
      ScaleImage(self, scale);
  }

  return (PyObject*)self;
}

//----------------
// PyImageDealloc