Method SetFontSizeRange

Rendering/Label/vtkLabeledTreeMapDataMapper.cxx:620–679

}

void vtkLabeledTreeMapDataMapper::SetFontSizeRange(int maxSize, int minSize, int delta)
{
  if (maxSize < minSize)
  {
    vtkErrorMacro(<< "maxSize is smaller than minSize");
    return;
  }
  if (delta < 1)
  {
    vtkErrorMacro(<< "delta must be positive");
    return;
  }

  int nLevels = (maxSize - minSize) / delta;
  int i, s;

  if ((maxSize - (nLevels * delta)) > minSize)
  {
    ++nLevels;
  }

  if (this->MaxFontLevel != nLevels)
  {
    if (this->MaxFontLevel)
    {
      delete[] this->FontHeights;
      for (i = 0; i <= this->MaxFontLevel; i++)
      {
        delete[] this->FontWidths[i];
        this->HLabelProperties[i]->Delete();
      }
      delete[] this->FontWidths;
      delete[] this->HLabelProperties;
    }
    this->MaxFontLevel = nLevels;
    this->FontHeights = new int[this->MaxFontLevel + 1];
    this->FontWidths = new int*[this->MaxFontLevel + 1];
    this->HLabelProperties = new vtkTextProperty*[this->MaxFontLevel + 1];
    for (i = 0; i <= this->MaxFontLevel; i++)
    {
      this->FontWidths[i] = new int[95];
      this->HLabelProperties[i] = vtkTextProperty::New();
      this->HLabelProperties[i]->SetFontSize(12);
      this->HLabelProperties[i]->SetBold(1);
      this->HLabelProperties[i]->SetItalic(1);
      this->HLabelProperties[i]->SetShadow(1);
      this->HLabelProperties[i]->SetFontFamilyToArial();
      this->HLabelProperties[i]->SetJustificationToCentered();
      this->HLabelProperties[i]->SetVerticalJustificationToCentered();
      this->HLabelProperties[i]->SetColor(1, 1, 1);
    }
  }
  for (i = 0, s = maxSize; i < this->MaxFontLevel; i++, s -= delta)
  {
    this->HLabelProperties[i]->SetFontSize(s);
  }
  this->HLabelProperties[i]->SetFontSize(minSize);