Method vtkLegendBoxActor

Rendering/Annotation/vtkLegendBoxActor.cxx:32–123

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//------------------------------------------------------------------------------
vtkLegendBoxActor::vtkLegendBoxActor()
{
  // Positioning information
  this->PositionCoordinate->SetCoordinateSystemToNormalizedViewport();
  this->PositionCoordinate->SetValue(0.75, 0.75);

  this->Position2Coordinate->SetValue(0.2, 0.2);

  this->LockBorder = 0;
  this->ScalarVisibility = 1;

  // Control font properties
  this->EntryTextProperty = vtkTextProperty::New();
  this->EntryTextProperty->SetBold(0);
  this->EntryTextProperty->SetItalic(0);
  this->EntryTextProperty->SetShadow(0);
  this->EntryTextProperty->SetFontFamily(VTK_ARIAL);
  this->EntryTextProperty->SetJustification(VTK_TEXT_LEFT);
  this->EntryTextProperty->SetVerticalJustification(VTK_TEXT_CENTERED);

  this->Border = 1;
  this->Box = 0;
  this->Padding = 3;

  // Symbols and text strings
  this->NumberOfEntries = 0;
  this->Size = 0;
  this->Colors = nullptr;
  this->Symbol = nullptr;
  this->Transform = nullptr;
  this->SymbolTransform = nullptr;
  this->SymbolMapper = nullptr;
  this->SymbolActor = nullptr;
  this->TextMapper = nullptr;
  this->TextActor = nullptr;

  this->Icon = nullptr;
  this->IconActor = nullptr;
  this->IconMapper = nullptr;
  this->IconTransformFilter = nullptr;
  this->IconTransform = nullptr;
  this->IconImage = nullptr;

  // Construct the border
  this->BorderPolyData = vtkPolyData::New();
  vtkPoints* points = vtkPoints::New();
  points->SetNumberOfPoints(4);
  this->BorderPolyData->SetPoints(points);
  points->Delete();
  vtkCellArray* lines = vtkCellArray::New();
  lines->InsertNextCell(5); // points will be updated later
  lines->InsertCellPoint(0);
  lines->InsertCellPoint(1);
  lines->InsertCellPoint(2);
  lines->InsertCellPoint(3);
  lines->InsertCellPoint(0);
  this->BorderPolyData->SetLines(lines);
  lines->Delete();