Method ComputeCellRowsAndCols

Rendering/Matplotlib/vtkMatplotlibMathTextUtilities.cxx:807–877

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
bool vtkMatplotlibMathTextUtilities::ComputeCellRowsAndCols(const char* str, PyObject* pyFontProp,
  int dpi, std::uint64_t& rows, std::uint64_t& cols, vtkSmartPyObject* list)
{
  vtkPythonScopeGilEnsurer gilEnsurer;

  // Call the parse method
  // ftimage, depth = parse(str, dpi, fontProp)
  vtkSmartPyObject parse(PyUnicode_FromString("parse"));
  vtkSmartPyObject pyStr(PyUnicode_FromString(str));
  vtkSmartPyObject pyDpi(PyLong_FromLong(dpi));
  vtkSmartPyObject resTupleParse(PyObject_CallMethodObjArgs(this->MaskParser, parse.GetPointer(),
    pyStr.GetPointer(), pyDpi.GetPointer(), pyFontProp, nullptr));
  if (this->CheckForError(resTupleParse))
  {
    return false;
  }

  // Get ftimage
  PyObject* ftImage = PyTuple_GetItem(resTupleParse, 5);
  if (this->CheckForError(ftImage))
  {
    return false;
  }

  // Convert ftimage into a numpy array
  vtkSmartPyObject numpy(PyImport_ImportModule("numpy"));
  if (this->CheckForError(numpy))
  {
    return false;
  }

  vtkSmartPyObject asarray(PyUnicode_FromString("asarray"));
  vtkSmartPyObject numpyArray(
    PyObject_CallMethodObjArgs(numpy.GetPointer(), asarray.GetPointer(), ftImage, nullptr));
  if (this->CheckForError(numpyArray))
  {
    return false;
  }

  vtkSmartPyObject dimTuple(PyObject_GetAttrString(numpyArray, "shape"));
  if (this->CheckForError(dimTuple))
  {
    return false;
  }

  PyArg_ParseTuple(dimTuple, "ii", &rows, &cols);
  if (this->CheckForError())
  {
    return false;
  }

  // Store python data if needed
  if (list != nullptr)
  {
    vtkSmartPyObject flatArray(
      PyObject_CallMethod(numpyArray, const_cast<char*>("flatten"), const_cast<char*>("")));
    if (this->CheckForError(flatArray))
    {