vtkBorderRepresentation.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkBorderRepresentation_h
#define vtkBorderRepresentation_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
 
#include "vtkNew.h" // for ivars
 
VTK_ABI_NAMESPACE_BEGIN
class vtkPoints;
class vtkPolyData;
class vtkTransform;
class vtkTransformPolyDataFilter;
class vtkPolyDataMapper2D;
class vtkActor2D;
class vtkProperty2D;
class vtkCellArray;
 
class VTKINTERACTIONWIDGETS_EXPORT VTK_MARSHALAUTO vtkBorderRepresentation
  : public vtkWidgetRepresentation
{
public:
  static vtkBorderRepresentation* New();


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


  vtkViewportCoordinateMacro(Position);
  vtkViewportCoordinateMacro(Position2);
 
  enum
  {
    BORDER_OFF = 0,
    BORDER_ON,
    BORDER_ACTIVE
  };


  virtual void SetShowBorder(int border);
  virtual int GetShowBorderMinValue();
  virtual int GetShowBorderMaxValue();
  virtual int GetShowBorder();
  void SetShowBorderToOff() { this->SetShowBorder(BORDER_OFF); }
  void SetShowBorderToOn() { this->SetShowBorder(BORDER_ON); }
  void SetShowBorderToActive() { this->SetShowBorder(BORDER_ACTIVE); }


  vtkSetClampMacro(ShowVerticalBorder, int, BORDER_OFF, BORDER_ACTIVE);
  vtkGetMacro(ShowVerticalBorder, int);


  vtkSetClampMacro(ShowHorizontalBorder, int, BORDER_OFF, BORDER_ACTIVE);
  vtkGetMacro(ShowHorizontalBorder, int);


  vtkGetObjectMacro(BorderProperty, vtkProperty2D);


  virtual void SetShowPolygon(int border);
  virtual int GetShowPolygon();
  void SetShowPolygonToOff() { this->SetShowPolygon(BORDER_OFF); }
  void SetShowPolygonToOn() { this->SetShowPolygon(BORDER_ON); }
  void SetShowPolygonToActive() { this->SetShowPolygon(BORDER_ACTIVE); }


  vtkSetClampMacro(ShowPolygonBackground, int, BORDER_OFF, BORDER_ACTIVE);
  vtkGetMacro(ShowPolygonBackground, int);


  vtkSetMacro(EnforceNormalizedViewportBounds, vtkTypeBool);
  vtkGetMacro(EnforceNormalizedViewportBounds, vtkTypeBool);
  vtkBooleanMacro(EnforceNormalizedViewportBounds, vtkTypeBool);


  vtkSetMacro(ProportionalResize, vtkTypeBool);
  vtkGetMacro(ProportionalResize, vtkTypeBool);
  vtkBooleanMacro(ProportionalResize, vtkTypeBool);


  vtkSetVector2Macro(MinimumNormalizedViewportSize, double);
  vtkGetVector2Macro(MinimumNormalizedViewportSize, double);


  vtkSetVector2Macro(MinimumSize, int);
  vtkGetVector2Macro(MinimumSize, int);
  vtkSetVector2Macro(MaximumSize, int);
  vtkGetVector2Macro(MaximumSize, int);


  vtkSetClampMacro(Tolerance, int, 1, 10);
  vtkGetMacro(Tolerance, int);


  vtkGetVectorMacro(SelectionPoint, double, 2);


  vtkSetMacro(Moving, vtkTypeBool);
  vtkGetMacro(Moving, vtkTypeBool);
  vtkBooleanMacro(Moving, vtkTypeBool);
 
  enum
  {
    AnyLocation = 0,
    LowerLeftCorner,
    LowerRightCorner,
    LowerCenter,
    UpperLeftCorner,
    UpperRightCorner,
    UpperCenter
  };


  virtual void SetWindowLocation(int enumLocation);
  vtkGetMacro(WindowLocation, int);

  virtual void UpdateWindowLocation();

  enum InteractionStateType
  {
    Outside = 0,
    Inside,
    AdjustingP0,
    AdjustingP1,
    AdjustingP2,
    AdjustingP3,
    AdjustingE0,
    AdjustingE1,
    AdjustingE2,
    AdjustingE3
  };
 
  vtkSetClampMacro(InteractionState, int, 0, AdjustingE3);

  vtkMTimeType GetMTime() override;


  void BuildRepresentation() override;
  void StartWidgetInteraction(double eventPos[2]) override;
  void WidgetInteraction(double eventPos[2]) override;
  virtual void GetSize(double size[2])
  {
    size[0] = 1.0;
    size[1] = 1.0;
  }
  int ComputeInteractionState(int X, int Y, int modify = 0) override;


  void GetActors2D(vtkPropCollection*) override;
  void ReleaseGraphicsResources(vtkWindow*) override;
  int RenderOverlay(vtkViewport*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;
 
  void SetBWActorDisplayOverlayEdges(bool);
  void SetBWActorDisplayOverlayPolygon(bool);


  vtkSetVector3Macro(BorderColor, double);
  vtkGetVector3Macro(BorderColor, double);


  vtkSetClampMacro(BorderThickness, float, 0, VTK_FLOAT_MAX);
  vtkGetMacro(BorderThickness, float);


  vtkSetClampMacro(CornerRadiusStrength, double, 0.0, 1.0);
  vtkGetMacro(CornerRadiusStrength, double);


  vtkSetClampMacro(CornerResolution, int, 0, 1000);
  vtkGetMacro(CornerResolution, int);


  vtkSetVector3Macro(PolygonColor, double);
  vtkGetVector3Macro(PolygonColor, double);


  vtkSetClampMacro(PolygonOpacity, double, 0.0, 1.0);
  vtkGetMacro(PolygonOpacity, double);


  void SetPolygonRGBA(double rgba[4]);
  void SetPolygonRGBA(double r, double g, double b, double a);

  void GetPolygonRGBA(double rgba[4]);
  void GetPolygonRGBA(double& r, double& g, double& b, double& a);
 
protected:
  vtkBorderRepresentation();
  ~vtkBorderRepresentation() override;
 
  // Ivars
  int ShowVerticalBorder = BORDER_ON;
  int ShowHorizontalBorder = BORDER_ON;
  int ShowPolygonBackground = BORDER_ON;
  vtkNew<vtkProperty2D> BorderProperty;
  vtkNew<vtkProperty2D> PolygonProperty;
  vtkTypeBool EnforceNormalizedViewportBounds = 0;
  vtkTypeBool ProportionalResize = 0;
  int Tolerance = 3;
  vtkTypeBool Moving = 0;
  double SelectionPoint[2] = { 0.0, 0.0 };
 
  // Layout (position of lower left and upper right corners of border)
  vtkNew<vtkCoordinate> PositionCoordinate;
  vtkNew<vtkCoordinate> Position2Coordinate;
 
  // Window location by enumeration
  int WindowLocation = AnyLocation;
 
  // Sometimes subclasses must negotiate with their superclasses
  // to achieve the correct layout.
  int Negotiated;
  virtual void NegotiateLayout();
 
  // Update the border visibility based on InteractionState.
  // See Also: SetShowHorizontalBorder(), SetShowHorizontalBorder(),
  // ComputeInteractionState()
  virtual void UpdateShowBorder();
 
  // Keep track of start position when moving border
  double StartPosition[2];
 
  // Border representation. Subclasses may use the BWTransform class
  // to transform their geometry into the region surrounded by the border.
  vtkNew<vtkPoints> BWPoints;
  vtkNew<vtkPolyData> BWPolyData;
  vtkNew<vtkPolyData> PolyDataEdges;
  vtkNew<vtkPolyData> PolyDataPolygon;
  vtkNew<vtkTransform> BWTransform;
  vtkNew<vtkTransformPolyDataFilter> BWTransformFilter;
  vtkNew<vtkPolyDataMapper2D> BWMapperEdges;
  vtkNew<vtkPolyDataMapper2D> BWMapperPolygon;
  vtkNew<vtkActor2D> BWActorEdges;
  vtkNew<vtkActor2D> BWActorPolygon;
 
  // Constraints on size
  double MinimumNormalizedViewportSize[2] = { 0.0, 0.0 };
  int MinimumSize[2] = { 1, 1 };
  int MaximumSize[2] = { VTK_INT_MAX, VTK_INT_MAX };
 
  // Properties of the border
  double BorderColor[3] = { 1.0, 1.0, 1.0 };
  float BorderThickness = 1.0;
  double CornerRadiusStrength = 0.0;
  int CornerResolution = 20;
 
  // Properties of the inner polygon (ie. the background)
  double PolygonColor[3] = { 1.0, 1.0, 1.0 };
  double PolygonOpacity = 0.0;

  void ComputeRoundCorners();

  void ComputeOneRoundCorner(vtkCellArray* polys, vtkPoints* points, double radius, vtkIdType xPt,
    vtkIdType yPt, double startAngle);
 
private:
  vtkBorderRepresentation(const vtkBorderRepresentation&) = delete;
  void operator=(const vtkBorderRepresentation&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif