vtkTextRepresentation.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkTextRepresentation.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkTextRepresentation_h
#define vtkTextRepresentation_h
 
#include "vtkBorderRepresentation.h"
#include "vtkInteractionWidgetsModule.h" // For export macro
 
class vtkRenderer;
class vtkTextActor;
class vtkTextProperty;
class vtkTextRepresentationObserver;
 
class VTKINTERACTIONWIDGETS_EXPORT vtkTextRepresentation : public vtkBorderRepresentation
{
public:
  static vtkTextRepresentation* New();
 
 
  vtkTypeMacro(vtkTextRepresentation, vtkBorderRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  void SetTextActor(vtkTextActor* textActor);
  vtkGetObjectMacro(TextActor, vtkTextActor);
 
 
  void SetText(const char* text);
  const char* GetText();
 
  void BuildRepresentation() override;
  void GetSize(double size[2]) override
  {
    size[0] = 2.0;
    size[1] = 2.0;
  }
 
 
  void GetActors2D(vtkPropCollection*) override;
  void ReleaseGraphicsResources(vtkWindow*) override;
  int RenderOverlay(vtkViewport*) override;
  int RenderOpaqueGeometry(vtkViewport*) override;
  int RenderTranslucentPolygonalGeometry(vtkViewport*) override;
  vtkTypeBool HasTranslucentPolygonalGeometry() override;
 
  enum
  {
    AnyLocation = 0,
    LowerLeftCorner,
    LowerRightCorner,
    LowerCenter,
    UpperLeftCorner,
    UpperRightCorner,
    UpperCenter
  };
 
 
  virtual void SetWindowLocation(int enumLocation);
  vtkGetMacro(WindowLocation, int);
 
 
  void SetPosition(double x, double y) override;
  void SetPosition(double pos[2]) override { this->SetPosition(pos[0], pos[1]); }
 
 
  void ExecuteTextPropertyModifiedEvent(vtkObject* obj, unsigned long enumEvent, void* p);
  void ExecuteTextActorModifiedEvent(vtkObject* obj, unsigned long enumEvent, void* p);
 
 
  vtkSetClampMacro(PaddingLeft, int, 0, 4000);
  vtkGetMacro(PaddingLeft, int);
 
 
  vtkSetClampMacro(PaddingRight, int, 0, 4000);
  vtkGetMacro(PaddingRight, int);
 
 
  vtkSetClampMacro(PaddingTop, int, 0, 4000);
  vtkGetMacro(PaddingTop, int);
 
 
  vtkSetClampMacro(PaddingBottom, int, 0, 4000);
  vtkGetMacro(PaddingBottom, int);
 
 
  void SetPadding(int padding);
 
protected:
  vtkTextRepresentation();
  ~vtkTextRepresentation() override;
 
  // Initialize text actor
  virtual void InitializeTextActor();
 
  // Check and adjust boundaries according to the size of the text
  virtual void CheckTextBoundary();
 
  // the text to manage
  vtkTextActor* TextActor;
  vtkTextProperty* TextProperty;
 
  // Window location by enumeration
  int WindowLocation;
  virtual void UpdateWindowLocation();
 
  // observer to observe internal TextActor and TextProperty
  vtkTextRepresentationObserver* Observer;
 
  int PaddingLeft = 0;
  int PaddingRight = 0;
  int PaddingTop = 0;
  int PaddingBottom = 0;
 
private:
  vtkTextRepresentation(const vtkTextRepresentation&) = delete;
  void operator=(const vtkTextRepresentation&) = delete;
};
 
#endif