vtkMagnifierRepresentation.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkMagnifierRepresentation_h
#define vtkMagnifierRepresentation_h
 
#include "vtkCoordinate.h"               //Because of the viewport coordinate macro
#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkWidgetRepresentation.h"
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO
 
VTK_ABI_NAMESPACE_BEGIN
class vtkPropCollection;
class vtkPoints;
class vtkPolyData;
class vtkPolyDataMapper2D;
class vtkActor2D;
class vtkProperty2D;
 
class VTKINTERACTIONWIDGETS_EXPORT VTK_MARSHALAUTO vtkMagnifierRepresentation
  : public vtkWidgetRepresentation
{
public:
  static vtkMagnifierRepresentation* New();


  vtkTypeMacro(vtkMagnifierRepresentation, vtkWidgetRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  void SetRenderer(vtkRenderer* ren) override { this->Superclass::SetRenderer(ren); }


  vtkSetClampMacro(MagnificationFactor, double, 0.001, 1000.0);
  vtkGetMacro(MagnificationFactor, double);


  VTK_MARSHALEXCLUDE(VTK_MARSHAL_EXCLUDE_REASON_IS_INTERNAL)
  void AddViewProp(vtkProp*);
  vtkPropCollection* GetViewProps() { return this->Props; }
  int HasViewProp(vtkProp*);
  VTK_MARSHALEXCLUDE(VTK_MARSHAL_EXCLUDE_REASON_IS_INTERNAL)
  void RemoveViewProp(vtkProp*);
  VTK_MARSHALEXCLUDE(VTK_MARSHAL_EXCLUDE_REASON_IS_INTERNAL)
  void RemoveAllViewProps();


  vtkSetVector2Macro(Size, int);
  vtkGetVector2Macro(Size, int);


  vtkSetMacro(Border, bool);
  vtkGetMacro(Border, bool);
  vtkBooleanMacro(Border, bool);


  vtkGetObjectMacro(BorderProperty, vtkProperty2D);

  enum InteractionStateType
  {
    Invisible = 0,
    Visible
  };


  void BuildRepresentation() override;
  void WidgetInteraction(double eventPos[2]) override;

  vtkSetClampMacro(InteractionState, int, Invisible, Visible);

  vtkRenderer* GetMagnificationRenderer() { return this->MagnificationRenderer; }


  void ReleaseGraphicsResources(vtkWindow*) override;
  int RenderOverlay(vtkViewport*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;

  vtkMTimeType GetMTime() override;
 
protected:
  vtkMagnifierRepresentation();
  ~vtkMagnifierRepresentation() override;
 
  // Ivars
  double MagnificationFactor;
  vtkPropCollection* Props;
  int Size[2];
  bool Border;
  vtkProperty2D* BorderProperty;
 
  // The internal magnification renderer and supporting classes
  vtkRenderer* MagnificationRenderer;
  vtkCoordinate* Coordinate;
  bool InsideRenderer;
 
  // Border representation.
  vtkPoints* BorderPoints;
  vtkPolyData* BorderPolyData;
  vtkPolyDataMapper2D* BorderMapper;
  vtkActor2D* BorderActor;
 
private:
  vtkMagnifierRepresentation(const vtkMagnifierRepresentation&) = delete;
  void operator=(const vtkMagnifierRepresentation&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif